CN115303146A

CN115303146A - Child-care related appliance

Info

Publication number: CN115303146A
Application number: CN202210448198.4A
Authority: CN
Inventors: 柴田裕司; 西川直志
Original assignee: Graco Childrens Products Inc
Current assignee: Graco Childrens Products Inc
Priority date: 2021-05-07
Filing date: 2022-04-26
Publication date: 2022-11-08
Also published as: CN115303143A; CN115303144A; CN115303145A

Abstract

The present invention relates to a childcare apparatus capable of adjusting the position or shape of a movable portion with a simple structure. The child-care instrument is provided with a main body (child seat body (20)), an extension (ISOFIX (11)) extending from the child seat body (20), and an adjustment mechanism (3) for adjusting the position or shape of the ISOFIX (11). The adjustment mechanism (3) is provided with: a rope (4) having one end connected to the child seat body (20) and the other end held by the ISOFIX (11); a reel which is rotatable in both forward and reverse directions and changes the position or shape of the ISOFIX (11) by winding and unwinding the cord (4); and a rotation locking mechanism that inhibits rotation of the spool.

Description

Child-care related appliance

Technical Field

The present invention relates to a childcare-related apparatus, and more particularly to a childcare-related apparatus including a fixed portion, a movable portion that is movable relative to the fixed portion, and an adjustment mechanism for adjusting a position or a shape of the movable portion.

Background

Generally, a child care apparatus such as a child seat, a stroller, a high-low bed, and an infant carrier is provided with a movable portion that can be changed in position with respect to a fixed portion.

For example, japanese patent laying-open No. 2008-290587 (patent document 1) discloses a child seat in which a length of a shoulder harness can be adjusted in accordance with a body of a child. This child seat can adjust the length of the shoulder harness only by pulling forward the front end portion of the shoulder harness positioned on the rear surface side of the seat section.

For example, japanese utility model laid-open publication No. 7-4248 (patent document 2) discloses a stroller in which: the inclination angle can be adjusted by connecting the belt to the hand push rod and adjusting the length of the belt by means of a buckle attached to the back surface of the backrest portion.

For example, japanese patent laying-open No. 2013-162974 (patent document 3) discloses an infant carrier that can be used for both a vertical and a horizontal holding. The infant clasping tool is provided with a shoulder belt hung on the shoulders of parents, a waist belt hung on the waist of the parents and a connecting belt for connecting the children and the parents, wherein each belt is set to be adjustable in length.

[ Prior art documents ]

[ patent document ]

[ patent document 1] Japanese patent application laid-open No. 2008-290587

[ patent document 2] JP-A7-4248

[ patent document 3] Japanese patent laid-open No. 2013-162974.

Disclosure of Invention

[ problems to be solved by the invention ]

The child-care instruments of patent documents 1 to 3 require both hands to adjust the length and the inclination angle of the body restraint band such as the shoulder strap, and are complicated in structure.

The present invention has been made to solve the above-described problems, and an object thereof is to provide a childcare apparatus capable of adjusting the position or shape of a movable portion with a simple configuration.

[ means for solving problems ]

In order to achieve the object, a childcare-related apparatus according to an aspect of the present invention includes: a fixed part; a movable section that is movable relative to the fixed section; and an adjustment mechanism for adjusting a position or a shape of the movable portion; wherein, adjustment mechanism possesses: a rope connecting the fixed part and the movable part; a reel which is rotatable in both forward and reverse directions and changes the position or shape of the movable portion by winding and unwinding the cord; a one-way clutch mechanism that permits rotation of the spool in a direction in which the cord is wound and prohibits rotation of the spool in a direction in which the cord is fed; and a lock releasing member that releases the rotation prohibition state of the spool by the one-way clutch mechanism and allows the spool to rotate freely.

Preferably, the adjustment mechanism further includes a rotation operation member for operating rotation of the spool.

Preferably, the adjusting mechanism includes a biasing member that biases the spool in a cord winding direction.

Preferably, the adjustment mechanism further includes a holder rotatably supporting the spool, and the one-way clutch mechanism includes: a snap tooth provided on either the reel or the holder; and an engagement claw mounted on the other of the reel or the holder and displaceable between an engagement position at which the engagement claw is engaged with either of the reel or the holder and a non-engagement position at which the engagement claw is not engaged with either of the reel or the holder; the lock releasing member includes an operation portion that is operated to bring the engagement claw to the non-engagement position.

Preferably, the engagement teeth are provided on an outer peripheral surface of the spool extending in parallel with a rotation axis of the spool, the engagement claws are provided on the holder and displaced in a direction orthogonal to the engagement teeth, and the lock release member is moved in a direction orthogonal to the rotation axis of the spool to release the rotation prohibited state of the spool.

Preferably, the engagement teeth are provided on the holder along a circumferential direction of the spool, the engagement claw is provided on the spool, and the lock release member is displaced in a horizontal direction with respect to the engagement teeth, and the lock release member is moved in the circumferential direction of the spool, thereby releasing the rotation prohibited state of the spool.

Preferably, the engagement teeth are provided on an upper surface or a lower surface of the spool extending in a direction orthogonal to a rotation axis of the spool, the engagement claw is provided on the holder and displaced in a direction orthogonal to the engagement teeth, and the lock release member is moved in a direction parallel to the rotation axis of the spool to release the rotation prohibited state of the spool.

Preferably, the child-care related instrument is a child seat, the fixed part is a seat, and the movable part is a body restraint band attached to the seat.

Preferably, the child-care instrument is a child seat, the fixed part is a child seat body, and the movable part is ISOFIX attached to the child seat body.

A childcare-related instrument according to another aspect includes: a main body portion; an extension portion extending from the main body portion; and an adjustment mechanism for adjusting a position or a shape of the extension portion, wherein the adjustment mechanism includes: a rope having one end connected to the main body and the other end held by the extension portion; a reel which is rotatable in both forward and reverse directions and changes the position or shape of the extension portion by winding and unwinding the cord; and a rotation locking mechanism that inhibits rotation of the spool.

Preferably, the childcare apparatus is a child-care apparatus having a seat, the main body is a seat for receiving the child, the extension portions are a pair of shoulder straps extending from the seat and restraining shoulders of the child, the pair of straps are provided, and the pair of straps are held at ends of the pair of shoulder straps.

Preferably, the childcare apparatus is a child care apparatus with a seat, the main body is a seat for receiving a child, the extension portion is a crotch strap extending from the seat portion and restraining a crotch of the child, and the string is held at an end of the crotch strap.

Preferably, the child-care related instrument is a child seat, the main body is a child seat main body, and the extension portion is ISOFIX extending rearward from the child seat main body.

Preferably, the childcare apparatus is an infant carrier, the main body is an infant carrier main body, and the extension portion is a movable portion extending from the infant carrier main body.

Preferably, the infant carrier main body includes a parent-side shoulder strap to be wrapped around a shoulder of a parent and a parent-side lap strap to be wrapped around a waist of the parent, and the extension portion is a portion extended from the parent-side shoulder strap or the parent-side lap strap.

Preferably, the infant carrier main body includes a child support for supporting a body of a child, and the extension portion is a portion extending from the child support.

Preferably, the reel control device further includes a lock releasing member that releases the rotation prohibition state of the reel by the rotation lock mechanism to allow the reel to rotate freely.

A childcare apparatus according to still another aspect includes: a fixed part; a movable portion that is relatively movable with respect to the fixed portion; and an adjustment mechanism for adjusting the position or shape of the movable portion; wherein, adjustment mechanism possesses: a rope connecting the fixed part and the movable part; a reel which is rotatable in both forward and reverse directions and changes the position or shape of the movable portion by winding and unwinding the cord; a rotation operation member for operating rotation of the reel; an action transmission part for transmitting the rotation movement of the rotation operation component to the reel; and a motion separating part which does not transmit the rotation motion of the reel to the reel.

Preferably, the rotation operation member transmits the rotational motion to the spool through the motion transmitting portion, and does not transmit the rotational motion to the spool through the motion separating portion when a predetermined load is exceeded.

Preferably, the rotation operation member transmits a rotational motion to the spool through the operation transmitting portion when rotating in one direction, and does not transmit a rotational motion to the spool through the operation separating portion when rotating in the other direction.

Preferably, the reel includes a reel body that winds and feeds the rope, and a moving member provided between the reel body and the rotational operation member, and the operation transmission portion or the operation separation portion includes a drive gear portion provided on the rotational operation member, and a driven gear portion provided on the moving member.

Preferably, the moving member is biased in a direction toward the rotational operation member.

Preferably, the drive gear portion includes a first inclined portion inclined in the winding direction from the reel toward the rotational operation member and a second inclined portion inclined in the feeding direction from the reel toward the rotational operation member, and an angle of the first inclined portion with respect to the winding direction is smaller than an angle of the second inclined portion with respect to the feeding direction.

A childcare apparatus according to another aspect includes: a fixed part; a movable portion that is movable relative to the fixed portion and is movable downward in the vertical direction; and an adjustment mechanism for adjusting the position or shape of the movable portion; wherein, adjustment mechanism possesses: a rope connecting the fixed part and the movable part; a reel which is rotatable in both forward and reverse directions and changes the position or shape of the movable portion by winding and unwinding the cord; a biasing member that biases the spool so as to rotate in a cord winding direction; and, a locking member that inhibits rotation of the spool; and the biasing force of the biasing member is selected to be smaller than the biasing force of the movable portion to be moved vertically downward.

Preferably, the reel further includes a one-way clutch mechanism that permits rotation of the reel in the winding direction of the rope and prohibits rotation of the reel in the feeding direction of the rope.

Preferably, the locking member includes a spool locking claw displaceable between a first position in which the portion rotating together with the spool is engaged to inhibit rotation of the spool and a second position in which the portion rotating together with the spool is separated to permit rotation of the spool.

Preferably, the reel further comprises a lock release member for bringing the lock member to the second position to allow the reel to rotate freely.

Preferably, the urging member is a coil spring (helical spring) portion, one end of the coil spring is fixed to the spool, and the other end thereof is fixed to the housing of the adjustment mechanism.

Preferably, the child-care apparatus is a child seat, the fixed part is a seat, and the movable part is a body restraint band attached to the seat.

[ Effect of the invention ]

According to the present invention, it is possible to provide a childcare apparatus in which the position or shape of the movable portion can be adjusted with a simple configuration.

Drawings

Fig. 1 (a) is a perspective view of a child seat according to an embodiment of the present invention, (B) is a perspective view of a take-out adjustment mechanism and ISOFIX, (C) is a sectional view showing a state where ISOFIX is pulled out, and (D) is a sectional view showing a state where ISOFIX is pressed in.

Fig. 2A is a perspective view of a child seat according to another embodiment, fig. 2B is a perspective view showing a state in which an adjustment mechanism, a shoulder belt, and a lap belt are taken out and the shoulder belt is pulled out, and fig. 2C is a perspective view showing a state in which the shoulder belt is rolled up from the state shown in fig. 2B.

Fig. 3 (a) is a perspective view of a child seat according to still another embodiment, and (B) is a schematic cross-sectional view of the child seat in a state where a belt is restrained, and (C) is a schematic cross-sectional view of the child seat in a state where the belt is opened.

Fig. 4 is a view showing an adjustment mechanism in embodiment 1 of the present invention, where part (a) is a perspective view, part (B) is a plan view, and part (C) is a cross-sectional view as viewed from the IVc line of part (B) of fig. 4.

Fig. 5 is an exploded perspective view of the adjustment mechanism according to embodiment 1 of the present invention.

Fig. 6 is a plan view showing the latch release member, the lock member, the spool, and the partition plate taken out, where part (a) shows a state where the latch release member is not operated, and part (B) shows a state where the latch release member is operated.

Fig. 7 is a sectional view taken along line VII in fig. 4 (C).

Fig. 8 (a) is a perspective view showing the rotary operation member and the moving member taken out, (B) is a schematic view showing the drive gear of the rotary operation member and the driven gear of the moving member, (C) is a perspective view of the rotary operation member viewed from the rear, and (D) is an enlarged view of the drive gear portion of the (C).

Fig. 9 is a sectional view showing the rotation operation member, the moving member, and the link member taken out, where part (a) shows a state where the operation transmitting portion functions, and part (B) shows a state where the operation separating portion functions.

Fig. 10 is a cross-sectional view showing a modification of the adjustment mechanism.

Fig. 11 is a schematic diagram showing another modification of the adjustment mechanism, in which part (a) shows a state in which the lock release member is not operated, and part (B) shows a state in which the lock release member is operated.

Fig. 12 is a view showing an adjustment mechanism in embodiment 2 of the present invention, in which part (a) is a perspective view, part (B) is a plan view, and part (C) is a sectional view as viewed from the xic line of part (B) of fig. 4.

Fig. 13 is an exploded perspective view of an adjustment mechanism according to embodiment 2 of the present invention.

Fig. 14 is a cross-sectional view showing an adjustment mechanism according to embodiment 2 of the present invention, in which part (a) shows a state in which a lock release member is not operated, and part (B) shows a state in which the lock release member is operated.

In fig. 15, (a) is a perspective view showing the take-out spool and the lock member, (B) is a schematic view showing the one-way lock mechanism, and (C) is a perspective view of the spool as viewed from the back side.

Fig. 16 is a sectional view as viewed from the XVI line of the portion (C) of fig. 12.

In fig. 17, (a) is a perspective view showing the rotational operation member and the moving member taken out, (B) is a schematic view showing the drive gear of the rotational operation member and the driven gear of the moving member, (C) is a perspective view of the rotational operation member viewed from the rear, and (D) is an enlarged view of the drive gear portion of (C).

Fig. 18 is a cross-sectional view showing the taking-out of the rotation operation member, the moving member, and the link member, where part (a) shows a state where the operation transmission unit functions, and part (B) shows a state where the operation separation unit functions.

Fig. 19 is a sectional view showing a modification of the adjustment mechanism.

Fig. 20 is a sectional view showing another modification of the adjustment mechanism.

Fig. 21 is a view showing an adjustment mechanism in embodiment 3 of the present invention, wherein part (a) is a perspective view, part (B) is a plan view, and part (C) is a sectional view as viewed from the line XXIc of part (B).

Fig. 22 is an exploded perspective view of an adjustment mechanism according to embodiment 3 of the present invention.

Fig. 23 is a plan view of the upper holder.

Fig. 24 (a) is a perspective view showing the rotary operation member, the moving member, and the link member taken out, (B) is a schematic view showing the drive gear of the rotary operation member and the driven gear of the moving member, and (C) is a perspective view showing the rotary operation member viewed from the rear.

Fig. 25 (a) is a perspective view showing the link member and the lock member taken out, and (B) to (D) are partial sectional views taken along line XXV of fig. 21 (C), and show a state where the link member is rotated.

Fig. 26 is a partial sectional view taken along line XXVI of portion (C) of fig. 21, and portions (a) to (D) show a state in which the link member is rotated.

Fig. 27 is a view showing a state where a lower holder of the adjustment mechanism is removed, where part (a) is a lower perspective view and part (B) is a plan view.

Fig. 28 (a) is a perspective view showing the rotation operation member, the moving member, the biasing portion, and the link member taken out, (B) is a schematic view of the drive gear of the rotation operation member and the driven gear of the moving member, and (C) is a perspective view of the rotation operation member viewed from the rear.

Fig. 29 is a sectional view showing the rotation operation member, the moving member, the urging portion, and the link member taken out, where part (a) shows a state where the operation transmission portion functions, and part (B) shows a state where the operation separation portion functions.

Fig. 30 is a plan view of the lock release member.

Part (a) of fig. 31 shows a state in which the lock releasing member is not operated, and part (B) shows a state in which the lock releasing member is operated.

Fig. 32 is a view showing a modification of the adjustment mechanism, where part (a) is a perspective view, part (B) is a schematic view of a drive gear of the rotation operation member and a driven gear of the moving member, part (C) shows a state where the operation transmission portion functions, and part (D) shows a state where the operation separation portion functions.

Fig. 33 is an exploded perspective view of an adjustment mechanism according to embodiment 4 of the present invention.

Parts (a) to (D) in fig. 34 are schematic views showing the operation of the child seat according to embodiment 4 of the present invention.

Description of the reference numerals

1. 1A, 1B, 1C Children's seat (childbearing apparatus)

3. 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H adjustment mechanism

4. Rope

10. Base main body

11 ISOFIX

23. 24, 25 belts

30. 30C, 30F holder

32cF, 87 and 87C clamping tooth

40. 40C, 40D, 40F, 40G rotary operation member

43. 43F drive gear part

50. 50C, 50F, 50G moving part

53. 53F driven gear part

56. 56G, 110H force application component

60. 60B, 60C, 60F lock releasing member

70. 70C, 70F locking member

72. 72B, 72C, 73F, 93F engaging claws

80. 80A,80C, 80E, 80F reel

90F force application part.

Detailed Description

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and description thereof will not be repeated.

First, an example of a childcare apparatus including the adjustment mechanism 3 will be described. Examples of the child-care related instrument using the adjustment mechanism 3 include a stroller, a child seat, a baby carrier, a baby rack (baby rack), and a child-care chair, and examples of the child-care related instrument applied to the stroller, the baby carrier, and the baby carrier will be described.

< brief description of Instrument for baby growth >

An example of the childcare apparatus 1 according to the present embodiment will be described with reference to fig. 1 to 3.

(for children's seats)

First, a case where the child-care apparatus 1 is a child seat will be described. In the explanation of the child seat 1, the front-rear direction corresponds to the front-rear direction of the child seat 1, the left-right direction (width direction) corresponds to the left-right direction viewed from the front of the child seat 1, and the up-down direction corresponds to the up-down direction of the child seat 1.

Referring to part (a) of fig. 1, the child seat 1 may be a device that is disposed in a seat of an automobile and used for safely riding a child such as an infant or a young child, similarly to the structure of a general child seat. The child car seat 1 includes a base main body 10 and a seat 20. The base body 10 and the seat 20 are child seat bodies. The child seat main body is the "fixed portion" of the present embodiment and is also the "main body portion".

The base main body 10 is placed on a seat of a passenger car, and supports the seat 20 from below. A leg support (not shown) extending toward the floor surface of the passenger car is provided at the front end of the base main body 10, and ISOFIX11 coupled to a fixing member of a seat of the passenger car is provided at the rear end of the base main body 10. The ISOFIX11 is a portion projecting rearward from the child seat main body (base main body 10), and is a "movable portion" and an "extending portion" in the present embodiment.

The seat 20 is attached to the upper side of the base main body 10, and is supported rotatably with respect to the base main body 10. A state in which a soft cloth member, for example, a covering member such as a cushion material is attached to the seat 20 is shown.

The seat 20 includes a seat surface portion 21 and a backrest portion 22 rising from the rear of the seat surface portion 21. Since the child is seated on the seat 20, the seat surface portion 21 supports the hip of the child, and the backrest portion 22 supports the back of the child. A cushion structure is detachably provided at a corner where the seat surface portion 21 and the backrest portion 22 intersect.

The backrest portion 22 is provided with a pair of shoulder straps 23, and the pair of shoulder straps 23 restrain both shoulders of a child seated in the seat 20. The seat surface portion 21 is provided with a crotch strap 24 extending between the crotch (two legs) of a child seated on the seat 20 and a pair of waist straps 25 that restrain the waist of the child. These

straps

23, 24, and 25 are connected to each other near the abdomen of the child by a buckle 26 provided at the front end of the crotch strap 24. These

bands

23, 24, 25 are so-called 5-point bands. These

belts

23, 24, and 25 are body restraint belts that restrain the body of the child, are portions that protrude forward from the child seat main body (seat 20), are "movable portions" and "extended portions" of the present embodiment. In addition, the body restraining strip is also applicable to other childcare-related appliances.

Such a child seat 1 uses an adjustment mechanism 3. Generally, the adjustment mechanism 3 includes a cord 4 and an adjustment mechanism main body 5 that winds and pulls (feeds) the cord 4. First, an application of the adjustment mechanism 3 to the child seat 1 will be described.

(about ISOFIX)

As shown in parts (a) to (D) of fig. 1, the adjustment mechanism 3 of the child seat 1 of the present embodiment is used for adjusting the position of the ISOFIX11. As shown in fig. 1 (a), the adjustment mechanism 3 is provided at a front position of the child seat main body (base main body 10).

As shown in part (B) and part (C) of fig. 1, the ISOFIX11 includes an ISOFIX main body 12, a housing portion 13 capable of housing the ISOFIX main body 12, and a spring portion 14 for biasing the ISOFIX main body 12 outward. The ISOFIX main body 12 is coupled to a fixing member of a seat of a passenger car and fixed to the fixing member at an appropriate length.

A method of adjusting the position of ISOFIX11 by the adjustment mechanism 3 will be described with reference to part (C) and part (D) of fig. 1. First, as shown in fig. 1 (C), the ISOFIX main body 12 of the ISOFIX11 is pulled out from the housing 13. The ISOFIX main body 12 is coupled to a fixing member of a seat of a passenger car, and the child seat 1 is pushed into the seat. The adjustment mechanism body 5 is operated to wind the rope 4. This allows the child seat 1 to be connected to the seat of the passenger car without a gap, and allows the gap between the child seat 1 and the seat of the passenger car to be finely adjusted.

In addition, in order to increase the length of the ISOFIX body 12, the following methods can be used. That is, the ISOFIX is unlocked, and the adjustment mechanism body 5 is operated to pull out the child seat body in a direction away from the seat. As another method, the adjustment mechanism main body 5 may be operated to automatically lengthen the spring portion 14. As another method, the adjustment mechanism body 5 may be operated, and the ISOFIX body 12 may be pulled out by the user's hand. This enables the length of ISOFIX11 to be adjusted by a simple method.

(shoulder strap length adjustment)

As shown in fig. 2A to 2C, the adjustment mechanism 3 of the child seat 1A of the other embodiment is used for length adjustment of the shoulder belt 23. As shown in fig. 2A, the adjustment mechanism 3 is fixed to a front position of the seat surface portion 21 of the child seat main body (seat 20). Fig. 2B and 2C are views showing the child seat 1 shown in fig. 2A with only the shoulder belt 23 and the adjustment mechanism 3 removed.

The shoulder straps 23 are provided in pairs, and the strings 4 are fixed to the ends thereof, respectively. That is, a pair of the strings 4 is provided, and the pair of strings 4 are held at the ends of the pair of shoulder straps 23.

To adjust the length of the shoulder strap 23, the adjustment mechanism 3 is operated. Specifically, in order to shorten the length of the shoulder strap 23, the adjustment mechanism body 5 is operated from the state shown in fig. 2B, and the rope 4 is wound, thereby bringing the state shown in fig. 2C. In order to lengthen the shoulder strap 23, the adjustment mechanism body 5 is operated from the state shown in fig. 2C, and the shoulder strap 23 is pulled out by hand. This enables adjustment of the shoulder straps 23 to be performed in a simple manner.

The adjustment mechanism body 5 is wound with the pair of ropes 4 respectively held at the ends of the pair of shoulder straps 23, but may be wound directly around the shoulder straps 23 themselves.

(shoulder strap bouncing mechanism)

As shown in parts (a) to (C) of fig. 3, the adjustment mechanism 3 of the child seat 1B of the other embodiment is used for the pop-up mechanism 27 of the shoulder belt 23. The raising mechanism 27 of the shoulder belt 23 is configured to raise the shoulder belt 23 from the restraint position (portion (B) of fig. 3) to the open position (portion (C) of fig. 3) so that the shoulder belt 23 does not become an obstacle when the child is seated in the child seat 1B.

As shown in fig. 3 (B), the pop-up mechanism 27 of the shoulder strap 23 includes a turning portion 28 and a pop-up portion 29 that can be turned with the turning portion 28 as a fulcrum. As shown in fig. 3 (C), the shoulder strap 23 is sprung by the springing portion 29. As shown in part (a) of fig. 3, the adjustment mechanism 3 is fixed at a position forward of the seat surface portion 21 of the child seat main body (seat 20). As shown in fig. 3 (B), one end of the rope 4 is connected to the rotating portion 28 of the pop-up mechanism 27.

A method of operating the pop-up mechanism 27 of the shoulder belt 23 by the adjustment mechanism 3 will be described. Specifically, to displace the shoulder straps 23 from the restraint position to the open position, the adjustment mechanism body 5 is rotated from the state shown in fig. 3 (B), and the cord 4 is wound to be in the state shown in fig. 3 (C). In order to displace the shoulder belt 23 from the open position to the restraint position, the adjustment mechanism body 5 is operated from the state shown in fig. 3 (C), the shoulder belt 23 is pushed down, and the string 4 is fed out. This enables the operation of the raising mechanism 27 of the shoulder belt 23 to be performed in a simple manner.

In the above, the description has been given of the example in which the adjustment mechanism 3 is used in the child seats 1 to 1B, but the present invention is not limited to the above embodiment. Note that, although the adjustment mechanism 3 of embodiment 1 described later is illustrated in the drawings of fig. 1 to 3, the adjustment mechanism of any embodiment may be used.

Further, the adjustment mechanism may be used for adjusting the length of a crotch strap that restrains the crotch of the child. In this case, the end of the string 4 of the adjustment mechanism is held at the end of the crotch strap 24.

In addition, in the case where the headrest 22a for protecting the head of the child is an extended portion extending from the main body portion, the adjustment mechanism main body 5 may be used in order to adjust the shape of the headrest 22 a. Specifically, the adjustment of the shape of the headrest 22a refers to, for example, adjustment of the height of the headrest 22a, adjustment of the width of the standing wall 22b, and adjustment of the interval between the pair of side walls 22 c. In this case, one end of the string 4 may be connected to the movable portion of the headrest 22a, and the adjustment mechanism body 5 may be fixed to the back surface of the backrest portion 22 as a fixed portion.

The adjustment mechanism 3 may be used to adjust the length of the leg support provided in front of the base main body 10. In this case, the string 4 may be connected to an end of the leg supporter, and the adjustment mechanism body 5 may be fixed to the base body 10 as a fixing portion.

(holding tool for infant)

The case where the child-care related instrument is an infant carrier will be described. The basic structure of the infant carrier may be a device for holding a child forward or for carrying a child, similar to the structure of a general infant carrier.

The infant clasp comprises: a body of the infant carrier; a parent-side shoulder strap wound around both shoulders of a user (e.g., a father); and a parent side waist band wound around the waist of the parent. The infant carrier body is a portion that holds the back or the abdomen of the child and occupies a large area of the infant carrier, and is the "fixed portion" and also the "main body portion" of the present embodiment. The parent side shoulder strap and the parent side waist belt are movable portions extending from the infant carrier body, and are "movable portions" and "extending portions" of the present embodiment. In order to adjust the length or shape of such a shoulder strap or waist belt, an adjustment mechanism body 5 is provided. In this case, one end of the string 4 may be connected to an end of the shoulder strap or the parent side lap belt, and the adjustment mechanism body 5 may be fixed to a rear surface of the infant carrier body as a fixing portion.

In the case where the headrest for protecting the head of the child is an extension portion extending from the infant carrier body (main body portion), the adjustment mechanism body 5 may be used to adjust the height of the headrest in accordance with the growth of the child. In this case, one end of the string 4 may be connected to a movable portion of the headrest, and the adjustment mechanism body 5 may be fixed to the back surface of the infant carrier body as a fixing portion.

(for other child-care related instruments)

While the child seat, the stroller, and the infant carrier have been described as examples of the child-care apparatus using the adjustment mechanism 3, examples thereof include apparatuses in which a child sits down or lies down, such as a baby rack and a child-care chair. The above-described embodiment is merely an example, and is not limited to the childcare apparatus described above as long as the childcare apparatus is provided with a main body portion and an extending portion extending from the main body portion, and the adjusting mechanism is used to adjust the position or shape of the extending portion.

The adjustment mechanism 3 for such a childcare-related appliance will be described in detail.

< embodiment 1>

The adjustment mechanism 3 in embodiment 1 will be described with reference to fig. 4 to 9. The adjustment mechanism 3 is attached to various parts of the childcare apparatus, and in the following description of embodiment 1, the up-down direction on the paper surface of fig. 5 and 9, which is part (C) of fig. 4, is described as the up-down direction of the adjustment mechanism 3, and the left-right direction on the paper surface is described as the left-right direction of the adjustment mechanism 3.

As described above, the adjustment mechanism 3 is generally provided with the cord 4 and the adjustment mechanism main body 5. Referring to fig. 4 and 5 in particular, the adjustment mechanism body 5 includes a holder 30, a rotation operation member 40, a moving member 50, a lock release member 60, a lock member 70, and a spool 80. The adjustment mechanism 3 winds the cord 4 by rotating the operation member 40, and can draw (feed) the wound cord 4 by operating the lock releasing member 60.

The rope 4 connects a fixed part such as a child seat body and an infant carrier body and a movable part such as a shoulder strap. The cord 4 is wound around the reel 80 and fixed to the fixing portion via the reel 80. One or more ropes 4 may be provided. When two movable portions are provided, both ends of one rope 4 may be connected to the movable portions and the middle portion thereof may be wound around the spool 80, or one ends of two ropes 4 may be connected to the movable portions and the other ends may be connected to the fixed portions. The spool 80 may be fixed to the movable portion instead of the fixed portion. In this case, both ends of the cord 4 may be connected to the fixed portion, and the cord may be wound around the reel 80 to reduce the width of the movable portion and the fixed portion.

The string 4 is a long member, and is a member obtained by combining, knitting, and sewing threads, chemical fibers, metals, paper, and the like, and includes threads (wire), tapes, and the like, for example.

Referring to fig. 4 and 5, the holder 30 rotatably supports the reel 80. The holder 30 includes an upper holder 31, a lower holder 34, and a partition plate 37 sandwiched between the upper holder 31 and the lower holder 34. The upper holder 31 includes an upper surface and a side surface protruding downward from an outer peripheral edge of the upper surface. A through hole 32 is provided in a substantially central portion of the upper surface of the upper holder 31. The upper end of the spool 80 penetrates the through hole 32. An operation hole 33 through which the operation portion 61 of the lock release member 60 passes is provided on a side surface of the upper holder 31.

The lower holder 34 includes a lower surface and a side surface projecting upward from an outer peripheral edge of the lower surface. A recess 35 for holding the spool 80 is provided in a region surrounded by the lower surface and the side surface. A pair of side surfaces of the lower holder 34 are provided with rope hole portions 36 through which the rope 4 passes.

The partition plate 37 has a flat rectangular shape, and a through hole 38 is provided at a substantially central portion thereof. The through-holes 38 are vertically aligned with the through-holes 32 of the upper holder 31. The through hole 38 allows the upper end of the spool 80 to pass through. A plurality of rails for guiding the unlocking member 60 are provided on the upper surface of the partition plate 37. A projecting portion 39 projecting upward is attached to a part of the outer peripheral edge of the partition plate 37.

The rotation operating member 40 operates the rotation of the spool 80. The rotating operation member 40 functions as a handle that the user can grasp to rotate. As shown in fig. 8 (a) to (D), the rotation operation member 40 of the present embodiment is in the shape of a knob, and includes an upper surface 41 and a side surface 42 projecting downward from the outer peripheral edge of the upper surface 41. A drive gear portion 43 projecting downward is provided on the rear surface 41a of the upper surface 41. Further, slits may be provided at regular intervals on the side surface 42 for the convenience of the operator.

A foldable handle may be attached to the rotary operation member 40. The handle is, for example, a rod-shaped member, and preferably has a shape that protrudes upward when used and is folded along the upper surface 41 or the side surface 42 when not used.

The moving member 50 is disposed below the rotational operation member 40. The moving member 50 has a cylindrical shape with a lower side opened, and includes an upper surface 51 and an outer peripheral edge 52 protruding downward from the outer peripheral edge of the upper surface 51. The upper surface 51 is provided with a driven gear portion 53 rising upward. The driven gear portion 53 is engaged with the drive gear portion 43 provided in the rotary operation member 40. Further, the outer peripheral edge 52 is provided with a plurality of longitudinal slits for engaging with the link members 57.

As shown in fig. 4 (C), the link member 57 is cylindrical as a whole, and includes a large diameter portion 57a, a small diameter portion 57b located below the large diameter portion 57a, and a stepped portion 57C located between the large diameter portion 57a and the small diameter portion 57 b. The small diameter portion 57b is smaller than the through hole 32 of the upper holder 31. Therefore, the link member 57 is held by the step portion 57c in the through hole 32 of the upper holder 31. Further, a ring 58 may be provided between the link member 57 and the upper holder 31. The urging member 56 is sandwiched between the moving member 50 and the link member 57. The biasing member 56 is, for example, a spring, and biases the moving member 50 in a direction toward the rotational operation member 40.

The spool 80 is rotatable in both forward and reverse directions (one direction and the other direction). Referring to fig. 4 (C) and 5, the spool 80 includes a string holding portion 81, a flange portion 84, a first coupling portion 85, and a second coupling portion 86 from below toward above.

The string holding portion 81 is a portion to which the string 4 is fixed, and is a portion to which the string 4 is wound and fed out. With reference to fig. 7, the processing of the string 4 in the string holding portion 81 will be described. In the following description, the winding direction of the cord 4 is denoted by T, and the feeding direction is denoted by S.

The string holding portion 81 includes a fixing portion 81a for fixing the string 4, a string extending portion 81b for extending the string 4, and a rounded portion 81c provided between the fixing portion 81a and the string extending portion 81 b. The fixing portion 81a is provided at a substantially central position of the string holding portion 81, and a longitudinal central position of the string 4 is fixed. The string 4 fixed to the fixing portion 81a is unwound along the rounded portion 81c and extends along the string-extending portion 81b from the string-hole portion 36 of the lower holder 34 to the outside of the adjustment mechanism body 5.

The string-extending portion 81b and the rounded portion 81c are provided point-symmetrically about the fixing portion 81 a. Thus, the string 4 is held by the string holding portion 81 in an inverted S shape in a plan view. Since the rounded portion 81c is formed at the portion where the cord 4 is unwound, the cord 4 is smoothly wound along the arc of the rounded portion 81c. Therefore, even when the cord 4 is pulled and an excessive load is applied to the cord 4, the cord 4 can be prevented from being worn at the corner.

As shown in fig. 4 (C), the flange portion 84 is positioned above the string holding portion 81 and abuts against the lower side of the partition plate 37. The first connecting portion 85 has, for example, a cylindrical shape. The first connecting portion 85 has a diameter smaller than that of the through hole 38 of the partition plate 37 and penetrates the through hole 38. As shown in fig. 6 (a) and (B), the first coupling portion 85 includes an engaging tooth 87 on an outer peripheral surface extending parallel to the rotation axis of the spool 80. The second coupling portion 86 penetrates the through hole 65 of the unlocking member 60. The upper end of the second coupling portion 86 is coupled to the small diameter portion 57b of the link member 57. Thereby, the spool 80 is fixed to the link member 57, and the link member 57 rotates together with the rotation of the spool 80. The spool 80 and the link member 57 may be integrally formed members.

As shown in fig. 5 and 6 (a) and (B), the lock member 70 includes a pair of lock bodies 71, engagement claws 72 provided to the pair of lock bodies 71, first and

second pins

73 and 74 penetrating holes of the pair of lock bodies 71, and a biasing portion 75 that biases the pair of lock bodies 71.

The lock body 71 is displaceable between a lock position (part (a) of fig. 6) where the engagement pawl 72 is engaged with the engagement tooth 87 and an unlock position (part (B) of fig. 6) where the engagement pawl 72 is not engaged with the engagement tooth 87. The lock body 71 has an engagement claw 72 formed at an end facing the spool 80. As shown in fig. 5, the lock body 71 is formed with two pin holes through which the first pin 73 and the second pin 74 pass. This operation is performed by the lock releasing member 60 sliding up and down.

As shown in fig. 6 (a) and (B), the engaging pawl 72 is displaced in a direction orthogonal to the engaging tooth 87 of the spool 80 and engages with the engaging tooth 87 of the spool 80. The angle of the engaging claw 72 is preferably a right angle, for example, but may be an acute angle. The engaging pawl 72 is displaceable between a first position where it engages with an engaging tooth 87 that rotates together with the spool 80 to prohibit rotation of the spool 80 and a second position where it is separated from the portion that rotates together with the spool 80 to permit rotation of the spool 80. The first pin 73 fixes the biasing portion 75 and passes through the first hole 63 of the lock release member 60. The first pin 73 also functions as a guide for the lock releasing member 60 and a rotation fulcrum for the lock body 71. The second pin 74 passes through the second hole 64 of the lock release member 60. The biasing portion 75 is, for example, a torsion spring, and biases the engagement pawl 72 of the lock body 71 in a direction (lock position) in which the engagement tooth 87 of the spool 80 engages. The engagement pawl 72 of the lock member 70 and the engagement tooth 87 of the spool 80 are a "rotation lock mechanism" that inhibits rotation of the spool 80.

The lock releasing member 60 releases the rotation prohibition state of the spool 80, and allows the spool 80 to rotate freely. That is, by operating the lock releasing member 60, the cord 4 wound around the spool 80 can be pulled out. Part (a) of fig. 6 is a state in which the lock releasing member 60 is not operated, and the cord 4 is wound around the spool 80 but cannot be fed out. Part (B) of fig. 6 is a state in which the lock releasing member 60 is operated, and the cord 4 can be wound from the reel. The lock releasing member 60 is moved in a direction orthogonal to the rotational axis of the spool 80, thereby releasing the rotation prohibited state of the spool.

As shown in fig. 6 (a) and (B), the lock release member 60 includes an operation portion 61, a lock release body 62 that slides by operation of the operation portion 61, a first hole 63, a second hole 64, a through hole 65, a recess 66, and an urging portion 67 provided in the lock release body 62. Since the lock releasing member 60 is provided separately from the other members, it can be formed into various shapes, and the place where it is disposed is not limited, so that the degree of freedom in design is high.

The operation portion 61 is operated to bring the engagement claw 72 of the lock member 70 to the non-engagement position. As shown in fig. 5, the operation portion 61 is provided to protrude outward from the operation hole portion 33 of the upper holder 31 and to be capable of being pressed inward. The lock releasing member 60 has a plate shape, and the first hole 63 and the second hole 64 are vertically penetrating holes. Specifically, the first hole 63 is an elongated hole extending in the operation direction. The second hole 64 is a substantially inverted L-shaped hole. The first hole 63 and the second hole 64 are provided point-symmetrically, and are provided in the upper right portion and the lower left portion on the paper surface of part (a) of fig. 6.

The through hole 65 is provided substantially at the center of the lock release body 62, and the upper end of the spool 80 is inserted therethrough. The recess 66 holds the urging portion 67. The urging portion 67 is, for example, a coil spring. The biasing portion 67 is located between the protruding portion 39 and the convex portion 66 of the partition plate 37. Thereby, the lock releasing member 60 is biased by the biasing portion 67 in the state shown in fig. 6 (a). The biasing portion 67 is a member different from the lock release member 60, but may be integrally provided on the lock release body 62 or may be provided on a side surface of the upper holder 31.

(with respect to one-way clutch mechanism)

The one-way clutch mechanism will be described with reference to fig. 6. The one-way clutch mechanism permits rotation of the spool 80 in the winding direction of the rope 4 and prohibits rotation of the spool 80 in the feeding direction of the rope. The one-way clutch mechanism is a mechanism that is easily rotated in one direction but is not rotated in the other direction, or is not rotated unless a certain load is applied. In the present embodiment, in the portion (a) of fig. 6, the spool 80 rotates in the winding direction T (clockwise) in which the cord 4 is wound, but does not rotate in the feeding direction S (semi-clockwise).

The one-way clutch mechanism of the present embodiment includes: an engaging tooth 87 provided on the spool 80; and an engaging claw 72 attached to the partition plate 37 and displaceable between an engaging position (portion (a) of fig. 6) where it engages with the spool 80 and a non-engaging position (portion (B) of fig. 6) where it does not engage with the spool 80.

The engaging teeth 87 of the spool 80 include a first inclined portion 87a and a second inclined portion 87b. The angle formed by the first inclined portion 87a and the second inclined portion 87b is preferably perpendicular to the engagement claw 72 of the lock member 70. The engaging teeth 87 of the spool 80 and the engaging teeth 72 of the lock member 70 are not limited to the shapes shown in the drawings, and may be in a shape that meshes with each other like a shape of a general one-way clutch.

By providing the one-way clutch mechanism of the present embodiment, the spool 80 rotates only in the winding direction T and does not rotate in the feeding direction S. Accordingly, the winding of the cord 4 is performed by rotating the rotating operation member 40, and the feeding of the cord 4 is performed by pulling the cord 4 by operating the lock releasing member 60, so that it is possible to prevent an erroneous operation. Further, since the cord 4 cannot be fed out by the rotation of the rotating operation member 40, the cord 4 is not fed out even if the rotating operation member 40 is erroneously operated, and thus the safety is improved.

In addition, the one-way clutch mechanism of the present embodiment completely prohibits the rotation of the cord in the feeding direction, but may prohibit the rotation to some extent. The one-way clutch mechanism of the present embodiment may be configured to include an operation transmission portion and an operation separation portion as in the drive gear portion 43 and the driven gear portion 53 described below. In the case of such a one-way clutch mechanism, it is preferable to adjust the position or shape of a portion to which no load is applied from the viewpoint of safety.

(regarding the action transmission part and the action separation part)

The operation transmitting portion and the operation separating portion provided in the rotation operation member 40 and the moving member 50 will be described with reference to fig. 8 and 9.

As shown in fig. 8 (C) and 8 (D), a drive gear portion 43 is provided on the rear surface of the rotational operation member 40. As shown in part (B) of fig. 8, the drive gear portion 43 includes a first inclined portion 44 inclined in the feeding direction S from the moving member 50 side toward the back surface 41a of the rotational operation member 40, and a second inclined portion 45 inclined in the winding direction T from the moving member 50 side toward the back surface 41a of the rotational operation member 40. The angle θ 44 formed by the back surface 41a and the first inclined portion 44 and the angle θ 45 formed by the back surface 41a and the second inclined portion 45 are both acute angles, but the angle θ 45 is set to be larger than the angle θ 44 (θ 45> θ 44).

As shown in fig. 8 (a), a driven gear portion 53 is provided on the upper surface of the moving member 50. As shown in part (B) of fig. 8, the driven gear portion 53 includes a first inclined portion 54 inclined in the winding direction T from the side of the rotational operation member 40 toward the upper surface 51 of the moving member 50, and a second inclined portion 55 inclined in the feeding direction S from the upper surface 51 of the moving member 50 toward the back surface 41a of the rotational operation member 40. The angle θ 54 between the upper surface 51 and the first inclined portion 54 and the angle θ 55 between the upper surface 51 and the second inclined portion 55 are both acute angles, but the angle θ 55 is set to be larger than the angle θ 54 (θ 55> θ 54). In the present embodiment, θ 44 ≈ θ 54 and θ 45 ≈ θ 55, and the drive gear portion 43 and the driven gear portion 53 are strongly meshed.

When the rotational operation member 40 is rotated in the winding direction T, the second inclined portion 45 of the drive gear portion 43 having a large inclination angle meshes with the second inclined portion 55 of the moving member 50, and the moving member 50 (the spool 80) also rotates. Fig. 9A shows a state accompanying rotation.

When the winding of the cord 4 is completed, the moving member 50 (the spool 80) becomes unable to rotate, and therefore, a load (high torque) of a predetermined level or more is applied to the meshing of the second inclined portion 45 of the drive gear portion 43 and the second inclined portion 55 of the moving member 50. When the rotational operation member 40 is rotated in this state, the drive gear portion 43 passes over the driven gear portion 53, and only the rotational operation member 40 is rotated. That is, when a load of a certain level or more is applied to the rotation operation member 40, the rotational movement of the rotation operation member 40 is not transmitted to the spool 80. This state is shown in part (B) of fig. 9. As shown in fig. 9 (B), the driving gear portion 43 passes over the driven gear portion 53, and the moving member 50 is lowered downward by the dimension L. In this way, when a load of a certain level or more is applied, the moving member 50 repeats the vertical movement while the rotational operation member 40 idles.

That is, the second inclined portion 45 of the drive gear portion 43 and the second inclined portion 55 of the moving member 50 are normally "operation transmitting portions" that transmit the rotational motion of the rotational operation member 40 to the spool, and become "operation separating portions" that do not transmit the rotational motion of the spool 80 to the spool when a load of a certain level or more is applied.

In addition, the rotary operation member 40 has a one-way clutch structure in which the cord 4 cannot be pulled out, in order to improve operability. When the rotational operation member 40 is rotated in the feeding direction S, the first inclined portion 44 of the drive gear portion 43 meshes with the first inclined portion 54 of the moving member 50, but the spool 80 becomes a one-way clutch mechanism (fig. 6) that does not rotate in the feeding direction S, and therefore the drive gear portion 43 of the rotational operation member 40 runs over the driven gear portion 53 of the moving member 50 and idles. That is, when a load of a certain level or more is applied to the rotation operation member 40, the rotational movement of the rotation operation member 40 is not transmitted to the spool 80.

The adjustment mechanism 3 of the present embodiment is provided with a motion transmitting portion and a motion separating portion, and is set to idle when the rotation operation member 40 is rotated in the feeding direction S, so that operability can be improved. Further, when the winding of the cord 4 is completed and the rotation operation member 40 is rotated in the winding direction T, the rotation operation member 40 is set to idle, so that the cord 4 can be prevented from being tightly pulled and the winding condition of the cord 4 can be set to be a reference.

In the above embodiment, the drive gear portion 43 is provided on the back surface of the upper surface 41 of the moving member 50, and the driven gear portion 53 is provided on the upper surface 51 of the moving member 50, but the driven gear portion 53 may be provided in a direction (left-right direction) orthogonal to the rotation axis of the spool 80. Specifically, the driving gear portion 43 is provided on the back surface of the side surface 42 of the moving member 50, and the driven gear portion 53 of the moving member 50 is provided. Thus, when a load of a certain level or more is applied by the rotation of the rotational operation member 40, the moving member 50 repeats the movement in the horizontal direction (left-right direction) while the rotational operation member 40 idles.

Further, in the above embodiment, the urging member 56 for urging the moving member 50 toward the rotational operation member 40 is provided, but a member provided with the driven gear portion 53 may be integrally provided with, for example, a resin spring or the like.

(about actions)

The operation of the adjustment mechanism 3 according to embodiment 1 will be described. When the rope 4 is to be wound, the rotation operating member 40 is rotated, and when the rope 4 is to be fed, the operating portion 61 of the lock releasing member 60 is pressed to pull the rope 4.

Specifically, when the rope 4 is to be wound, the rotating operation member 40 is rotated in the winding direction T (clockwise) as shown in fig. 6 (a). Then, the engagement pawl 72 of the lock member 70 is engaged with the next engagement tooth 87 while being caught by the first inclined portion 87a of the engagement tooth 87 of the spool 80 by the one-way clutch mechanism, and the spool 80 rotates clockwise by repeating such an operation, and the spool 80 winds the cord 4.

When the rope 4 is to be fed out, the operation portion 61 of the lock release member 60 is pressed toward the holder 30 as shown in fig. 6 (B). Then, the lock release body 62 slides upward on the paper surface of the portion (B) of fig. 6, the second pin 74 penetrating the second hole 64 of the lock release body 62 moves, the lock member 70 moves, and the engagement between the engagement pawl 72 of the lock member 70 and the engagement tooth 87 of the spool 80 is disengaged. Thus, the reel 80 can rotate freely to pull the rope 4, thereby feeding the rope 4.

(modification 1)

The adjustment mechanism 3A in modification 1 will be described with reference to fig. 10. The spool 80A of the adjustment mechanism 3A in modification 1 is a member in which the rotation operation member 40, the moving member 50, the link member 57, and the spool 80 of the above-described embodiment are integrally formed. Since the adjustment mechanism 3A of modification 1 does not require the rotation operation member 40, the moving member 50, and the link member 57, the number of components can be reduced, and a simpler configuration can be achieved. In this modification, since the rotation operation member 40 and the moving member 50 are integrally formed, the motion transmission portion and the motion separation portion are not provided.

(modification 2)

The adjustment mechanism 3B in modification 2 will be described with reference to parts (a) and (B) of fig. 11. Fig. 11 (a) is a diagram showing a state in which the lock releasing member 60 is not operated, and fig. 11 (B) is a diagram showing a state in which the lock releasing member 60 is operated.

The engagement claw 72 of the adjustment mechanism 3B in modification 2 may be provided in the lock releasing member 60 of the above embodiment. Specifically, the outer peripheral edge of the through hole 65B of the lock releasing member 60B is provided with an engagement claw 72B projecting inward of the through hole 65B. Thus, by pressing the operation portion 61 of the lock releasing member 60B, the engagement between the engagement teeth 87 of the spool 80 and the engagement claws 72 is released, and the rotation prohibited state of the spool 80 is released. In the adjustment mechanism 3B of modification 3, since the lock member 70 is not required, the number of components can be reduced, and a simpler configuration can be achieved.

< embodiment 2>

The adjustment mechanism 3C in embodiment 2 will be described with reference to fig. 12 to 18. Only the differences from the adjustment mechanism 3 shown in embodiment 1 will be described in detail. In general, embodiment 1 and the present embodiment are different in the lock releasing member 60C and the one-way lock mechanism. The adjustment mechanism 3 is attached to various parts of the childcare apparatus, and in the following description, the upper part of the section (C) in fig. 12 and the upper part of the paper of fig. 13 will be referred to as the upper part of the adjustment mechanism 3C, and the lower part of the paper will be referred to as the lower part of the adjustment mechanism 3C.

Roughly speaking, the adjustment mechanism 3C includes a cord 4 and an adjustment mechanism main body 5C. Referring to fig. 12 and 13 in particular, the adjustment mechanism body 5C includes a holder 30C, a rotation operation member 40C, a moving member 50C, a lock release member 60C, a lock member 70C, and a spool 80C. The adjustment mechanism 3C can wind the cord 4 by rotating the operation member 40C, and can pull out (feed out) the wound cord 4 by operating the lock releasing member 60C.

The cage 30C includes an upper cage 31C and a lower cage 34C. The upper holder 31C has a through hole 32C at a substantially central portion of an upper surface thereof. The rotation operating member 40C penetrates the through hole 32C. A hole 33C through which the cord 4 passes is provided on a side surface of the upper holder 31C. The lower holder 34C is provided with a recess 35 at a substantially central portion thereof for holding the lock member 70C.

The rotation operating member 40C is used to operate the rotation of the spool 80C. The upper surface 41C of the rotational operation member 40 may be provided with notches at regular intervals at corners where the side surfaces 42C meet, for the convenience of the operator. The rotary operation member 40C is provided with a through hole 46C at a substantially central portion of the upper surface 41C. The lock releasing member 60C penetrates the through hole 46C. As shown in fig. 17 (C) and (D), a drive gear portion 43 projecting downward is provided on the rear surface of the upper surface 41C.

As shown in fig. 13, the moving member 50C is provided below the rotational operation member 40C. The upper surface 51C of the moving member 50C is provided with a hole penetrating the unlocking body 62C of the unlocking member 60C. A driven gear portion 53 rising upward is provided on an outer peripheral edge 52 of the moving member 50C. The driven gear 53 engages with the drive gear 43 of the rotary operation member 40C.

As shown in part (C) of fig. 12, the link member 57C has a bottom portion 57aC and a side portion 57bC rising upward from the bottom portion 57 aC. The biasing member 56 is interposed between the moving member 50C and the link member 57C. The biasing member 56 is, for example, a spring, and biases the moving member 50C in a direction toward the rotational operation member 40C.

The spool 80C includes a cord holding portion 81C and a flange portion 84C. The string holding portion 81C is provided above the flange portion 84C. With reference to fig. 16, the processing of the string 4 in the string holding portion 81C will be described. The string holding portion 81C of the present embodiment is different from the string holding portion 81 of embodiment 1 in a portion for holding the string 4. The string 4 of embodiment 1 is fixed to one part of the fixing portion 81a provided at a substantially central position of the string holding portion 81 in a plan view. The cord 4 of the present embodiment is fixed by fixing portions 81aC provided at two locations above and below a substantially central position of the cord holding portion 81C in a plan view. The fixing portion 81aC is a cut portion, and has a shape capable of sandwiching the end portion of the string 4. In the present embodiment, 2 ropes 4 are provided instead of 1 rope.

As shown in part (C) of fig. 12, the flange portion 84C extends in a direction orthogonal to the rotation axis and abuts on the upper side of the lower holder 34C. As shown in fig. 15 (C), engagement teeth 87C are provided on the back surface of the flange portion 84C.

As shown in fig. 12 (C) and 15 (C), the lock member 70C includes a lock main body 71C, an engagement claw 72C provided on an upper surface of the lock main body 71C, and a biasing member 75C that biases the lock main body 71C. The lock body 71C is displaceable between an engagement position (portion (a) in fig. 14) where the engagement claw 72C engages with the engagement tooth 87C, and a non-engagement position (portion (B) in fig. 14) where the engagement claw 72C does not engage with the engagement tooth 87C. The engaging teeth 87C are provided on an upper surface extending in a direction orthogonal to the rotational axis of the spool 80C. The engagement pawl 72C of the lock member 70C and the engagement tooth 87C of the spool 80C are a "rotation lock mechanism" that prohibits rotation of the spool 80C.

The lock releasing member 60C releases the rotation prohibition state of the spool 80C, and allows the spool 80C to rotate freely. That is, by operating the lock releasing member 60C, the string 4 wound around the spool 80C can be pulled out. Part (a) of fig. 14 is a state in which the lock releasing member 60C is not operated, and the cord 4 is wound around the spool 80C but cannot be fed out. Part (B) of fig. 14 is a state in which the lock releasing member 60C is operated, and the cord 4 can be fed from the reel 80C. The lock releasing member 60C releases the rotation prohibited state of the spool 80C by moving in a direction parallel to the rotation axis of the spool 80C.

Referring to these drawings, the lock releasing member 60C includes: an operation unit 61C operated by a user; and a lock release body 62C that slides in the vertical direction by the operation of the operation portion 61C and extends in the vertical direction into a rod shape. The lock releasing member 60C abuts on the upper side of the lock member 70C. Thereby, the lock releasing member 60C is constantly biased to the lock releasing position (upward) by the biasing member 75C.

(one-way clutch mechanism)

The one-way clutch mechanism will be described with reference to fig. 15. In the above embodiment, the one-way clutch mechanism is performed by moving the lock member 70C in the direction orthogonal to the rotation axis, but in the present embodiment, the one-way clutch mechanism is performed by moving the lock member 70C in the direction parallel to the rotation axis.

In the present embodiment, the one-way clutch mechanism is performed by engagement of the engagement teeth 87C provided on the spool 80C and the engagement claws 72C provided on the lock member 70C. The engagement claw 72C is displaceable between a first position at which the engagement tooth 87C rotating together with the spool 80C is engaged to prohibit rotation of the spool 80C and a second position at which the engagement tooth is separated from the portion rotating together with the spool 80C to permit rotation of the spool 80C. The engaging tooth 87C of the spool 80C includes a first inclined portion 87aC and a second inclined portion 87bC. The angle formed by the first inclined portion 87aC and the second inclined portion 87bC is preferably, for example, a right angle. The engaging claws 72C of the lock member 70C are preferably formed at right angles to the shape of the engaging teeth 87C. The engagement pawl 72C is displaced in a direction orthogonal to the engagement tooth 87C.

(regarding the action transmission part and the action separation part)

The operation transmitting portion and the operation separating portion provided in the rotation operation member 40C and the moving member 50C will be described with reference to fig. 17 and 18. The operation transmission unit and the operation separation unit are substantially the same as those of embodiment 1, and therefore, the description will be made simply with reference to the drawings.

As shown in fig. 17 (C) and (D), a drive gear portion 43 is provided on a back surface 41aC of the upper surface 41C of the rotational operation member 40C. As shown in fig. 17 (a), a driven gear portion 53 is provided on the upper surface of the moving member 50C.

As shown in part (B) of fig. 17, when the rotational operation member 40C is rotated in the winding direction T and the drive gear portion 43 is meshed with the driven gear portion 53 to rotate, the moving member 50C (spool 80C) is also rotated in accordance with the rotation of the rotational operation member 40C. Fig. 18A shows the accompanying state.

Further, when the rotation operation member 40C is continuously rotated in the winding direction T and the winding of the cord 4 is completed, the moving member 50C (the spool 80C) cannot be rotated. In this case, when the rotational operation member 40C is further rotated in the take-up direction T, a load of a certain level or more is applied to the meshing of the drive gear portion 43 and the driven gear portion 53, and as shown in fig. 18 (B), the drive gear portion 43 passes over the driven gear portion 53 and only the rotational operation member 40C is rotated. That is, when a load of a certain level or more is applied to the rotation operation member 40C, the rotational movement of the rotation operation member 40C is not transmitted to the spool 80C. Fig. 18B shows this state. As shown in fig. 18 (B), the driving gear portion 43 passes over the driven gear portion 53, and the moving member 50 is lowered downward by the dimension L. Thus, when a load of a predetermined magnitude or more is applied, the moving member 50 repeatedly moves up and down while the rotational operation member 40 idles.

In addition, the rotation operating member 40C has a one-way clutch structure in which the cord 4 cannot be pulled out, in order to improve operability. When the rotational operation member 40C is rotated in the feeding direction S, the drive gear portion 43 goes over the driven gear portion 53 and idles. That is, when a load of a certain level or more is applied to the rotation operation member 40C, the rotational movement of the rotation operation member 40C is not transmitted to the spool 80C.

(regarding action)

The operation of the adjustment mechanism 3C according to embodiment 2 will be described. When the rope 4 is to be wound, the rotation operation member 40C is rotated, and when the rope 4 is to be fed out, the lock release member 60C is pressed to pull the rope 4.

Specifically, when the rope 4 is to be wound, the rotating operation member 40C is rotated in the winding direction. As shown in fig. 14 (a) and 15 (B), the engagement tooth 87C of the spool 80C engages with the engagement claw 72C of the lock member 70C, but the engagement tooth 87C of the spool 80C engages with the engagement claw 72C of the lock member 70C and engages with the next engagement tooth 87C by the one-way clutch mechanism, and this operation is repeated, so that the spool 80C rotates clockwise, and the spool 80C winds the cord 4.

When the rope 4 is to be fed out, the operating portion 61C of the lock releasing member 60C is pressed downward as shown in fig. 14 (B). Then, the unlocking body 62C moves the moving member 50C downward, and the engagement between the engagement pawl 72C of the lock member 70C and the engagement tooth 87C of the spool 80C is disengaged. Thus, the reel 80C can rotate freely to pull the rope 4, thereby feeding the rope 4.

In the present embodiment, although the rotation operation member 40C and the lock release member 60C are provided at the same position, the lock release member 60C is operated in a different direction during the rotation operation, and the operation portion 61C is operated in a different direction during the vertical movement operation, so that the operability can be improved and the erroneous operation can be prevented.

(modification 1)

The adjustment mechanism 3D in modification 1 will be described with reference to fig. 19. The adjustment mechanism 3D may be a member in which the lock release member 60C and the lock member 70C of the above-described embodiment are integrally formed. That is, the lock releasing member 60D has a function of locking or releasing the rotation of the spool 80C. By operating the lock release member 60D, the lock release member 60D itself moves downward, and the spool 80C is rotatable. Thus, in the adjustment mechanism 3D of modification 1, since the lock releasing member 60C and the lock member 70C of the above embodiment are integrally molded, the number of components can be reduced, and a simpler structure can be achieved.

(modification 2)

Referring to fig. 20, an adjustment mechanism 3E in modification 2 will be described. The adjustment mechanism 3E may be a member in which the rotation operation member 40C and the spool 80C of the above-described embodiment are integrally formed. That is, the reel 80E itself may be rotated to wind the rope 4. Thus, in the adjustment mechanism 3E of modification 2, since the rotation operation member 40C and the lock member 70C are integrally molded, the number of components can be reduced, and a simpler configuration can be achieved. In this modification, since the rotation operation member 40C and the moving member 50C of embodiment 2 are integrally formed, the motion transmission portion and the motion separation portion are not provided.

< embodiment 3>

The adjustment mechanism 3F in embodiment 3 will be described with reference to fig. 21 to 31. Only the differences from the

adjustment mechanisms

3 and 3C shown in embodiments 1 and 2 will be described in detail. Embodiment 1 differs from the present embodiment in various points, and is roughly different between the lock releasing member 60F and the lock member 70F. In the following description, the vertical direction on the paper of fig. 21 (C) and fig. 22 is described as the vertical direction of the adjustment mechanism 3F, and the horizontal direction on the paper is described as the horizontal direction of the adjustment mechanism 3F.

In general, the adjustment mechanism 3F includes a rope 4 and an adjustment mechanism main body 5F. Referring to fig. 21 and 22 in particular, the adjustment mechanism body 5F includes a holder 30F, a rotation operation member 40F, a moving member 50F, a lock release member 60F, a lock member 70F, and a spool 80F. In the adjustment mechanism 3F, the cord 4 is wound up by the rotation operation member 40F and the lock release member 60F is operated, whereby the wound cord 4 can be pulled out (fed out) in the same manner as in the above-described embodiment.

The cage 30F includes an upper cage 31F and a lower cage 34F. As shown in fig. 22 and 23, the upper holder 31F has a through hole 32F provided on the left side of the upper surface thereof and a pair of long holes 32fF provided to face the through hole 32F in the diagonally upward and downward direction.

The pair of leg portions 57cF of the link member 57F penetrate the through hole 32F of the upper holder 31F from above, and the

engagement claws

73F, 93F of the lock member 70F penetrate the through hole 32F of the upper holder 31F from below. Referring to fig. 23, a rib 32aF protruding inward of the hole is provided on the outer peripheral edge of the through hole 32F. The rib 32aF includes an arc portion 32bF and engaging teeth 32cF provided at a certain interval along the arc portion 32 bF. The engagement teeth 32cF are provided on the inner circumferential surface of the through hole 32F of the upper holder 31F so as to extend along the circumferential direction of the spool 80F. The click tooth 32cF includes a first inclined portion 32dF and a second inclined portion 32eF. The first inclined portion 32dF is substantially perpendicular to the arc portion 32bF, and the second inclined portion 32eF is formed to be obtuse with respect to the arc portion 32 bF. The

engagement claws

73F, 93F of the lock member 70F and the engagement teeth 32cF of the upper holder 31F are a "rotation lock mechanism" that inhibits rotation of the spool 80F.

As shown in fig. 21 (a) and 22, the upper holder 31F is provided with a string hole 33F through which the string 4 passes, on a pair of opposite side surfaces thereof. The pair of long holes 32fF have an arc shape along the through hole 32F. A screw hole 68dF of a second release member 64F described later penetrates the long hole 32fF.

As shown in fig. 22, the lower holder 34F functions as a lower cover, and is, for example, a rectangular plate-like member. The four corners of the lower holder 34F may be provided with legs.

The rotation operating member 40F is used to operate the rotation of the spool 80F. As shown in fig. 28 (a) and 29 (a), the rotary operation member 40F has a through hole 46F at a substantially central portion of the upper surface 41 thereof. The screw 47F penetrates the through hole 46F and supports the moving member 50F to be movable up and down. As shown in fig. 28 (C), a drive gear portion 43 projecting downward is provided on the rear surface 41a of the upper surface 41.

As shown in fig. 28 (a) and (B), the moving member 50F is disposed below the rotation operation member 40F. The moving member 50F is provided with a driven gear portion 53F recessed downward from the upper surface 51 aF. The driven gear portion 53F engages with the drive gear portion 43 of the rotational operation member 40F.

As shown in part (a) of fig. 29, the link member 57F includes an upper portion 57aF and a lower portion 57bF. The upper portion 57aF has a cylindrical shape with an open upper side. The upper portion 57aF holds the moving member 50F and the urging member 56 therein. The lower portion 57bF includes a pair of leg portions 57cF projecting downward. The pair of leg portions 57cF are coupled to the spool 80F. Thereby, the link member 57F and the spool 80F are fixed, and the rotation of the link member 57F is directly coupled to the rotation of the spool 80F.

As shown in fig. 22 and 27, the spool 80F includes a string holding portion 81F and a flange portion 84F that rotatably holds the string holding portion 81F. In fig. 27 (B), the winding direction T and the feeding direction S of the cord 4 are indicated by arrows. The processing of the string 4 in the string holding portion 81F is substantially the same as that of the string holding portion 81 of embodiment 1. In the present embodiment, a fixing portion for fixing the string 4 to the spool 80F is not provided, but may be fixed at a substantially central position in a plan view as in embodiment 1. In embodiment 1, the rounded portions 81c are provided only at the folded portions of the cord 4, and are not bilaterally symmetrical, but in the present embodiment, the rounded portions 81cF may be provided at the portions where the cord 4 is not folded.

As shown in fig. 22, the flange portion 84F of the spool 80F extends in a direction orthogonal to the rotation axis. The flange portion 84F is positioned above the string holding portion 81F and is coupled to the leg portion 57cF of the link member 57F. That is, the spool 80F is coupled to the link member 57F, and the spool 80F also rotates in accordance with the rotation of the link member 57F.

The lock member 70F will be described with reference to fig. 22 to 26. In the following description, referring particularly to part (a) of fig. 24, the lock member 70F of the present embodiment includes an upper slide member 71F, a lower slide member 91F provided to overlap with the upper slide member 71F, and a spring 90F provided between the upper slide member 71F and the lower slide member 91F.

The upper slide member 71F includes a slide body portion 72F, an engagement claw 73F projecting upward from the slide body portion 72F, a support portion 74F projecting downward from the slide body portion 72F, a first cut-in hole 77F formed in the slide body portion 72F, a first hole 75F branching from the first cut-in hole 77F, and a second hole 76F.

The lower slide member 91F is provided substantially bilaterally symmetrically to the upper slide member 71F. The lower slide member 91F includes a slide body 92F, an engagement claw 93F projecting upward from the slide body 92F, a support portion 94F projecting downward from the slide body 92F, a first cut-in hole 97F formed in the slide body 92F, a first hole 95F branched from the first cut-in hole 97F, and a second hole 96F. The

engagement claws

73F and 93F penetrate the through hole 32F of the upper holder 31. The

engagement claws

73F and 93F are horizontally displaced with respect to the above-described engagement teeth 32cF. Further, above the lower slide member 91F on the paper surface, a guide portion 98F extending in the left-right direction is provided to guide the slide of the upper slide member 71F in the left-right direction.

By vertically overlapping the upper slider member 71F and the lower slider member 91F, the

first holes

75F and 95F vertically penetrate therethrough, and the

second holes

76F and 96F vertically penetrate therethrough. As shown in fig. 24 (B) and (C), the upper slide member 71F slides rightward, the lower slide member 91F slides leftward, and the shapes of the

first holes

75F and 95F and the

second holes

76F and 96F change and become smaller.

The spring 90F is sandwiched between the support portion 74F of the upper slider member 71F and the support portion 94F of the lower slider member 91F. Thereby, the upper slider member 71F and the lower slider member 91F are constantly biased in the direction of separating.

Next, the operation of the lock member 70F will be described. As shown in fig. 22 and 25, the leg portion 57cF of the link member 57F penetrates the

first holes

75F, 95F and the

second holes

76F, 96F of the lock member 70F. The leg portion 57cF of the link member 57F is coupled to the spool 80F by a screw. The lock member 70F is sandwiched between the link member 57F and the spool 80F. Thus, when the link member 57F is rotated in the winding direction T of the portion (a) of fig. 25, as shown in the portion (C) of fig. 25, the leg portion 57cF of the link member 57F presses the first hole 75F of the upper slide member 71F to the right, and the leg portion 57cF of the link member 57F presses the second hole 96F of the lower slide member 91F to the left. Thereby, the upper slide member 71F moves rightward, the lower slide member 91F moves leftward, and the

engagement claws

73F and 93F of the lock member 70F move inward.

Parts (a) to (D) in fig. 26 are cross-sectional views viewed from the XXVI line of part (C) in fig. 21. In brief, the upper holder 31F is further overlapped above the portions (B) to (D) of fig. 25. The

engagement claws

73F and 93F of the lock member 70F rotate while expanding or contracting the gap therebetween by the rotation of the link member 57F. Specifically, when the locking member 70F is rotated in the winding direction T in the state shown in fig. 26 (a), the

engagement claws

73F and 93F of the locking member 70F approach each other as shown in fig. 29 (B). When the link member 57F is further rotated, the

engagement claws

73F, 93F of the lock member 70F engage with the next engagement tooth 32cF. Thus, the

engagement claws

73F and 93F of the lock member 70F wind the rope 4 while rotating 45 degrees, for example. Further, since the one-way clutch mechanism is used, the feed rope 4 is not rotated in the feed direction S.

The lock releasing member 60F will be described with reference to fig. 22, 30, and 31. Part (a) of fig. 31 is a state in which the lock release member 60 is not operated, and part (B) of fig. 31 is a state in which the lock release member 60 is operated. The left side of the portion (a) and the portion (B) of fig. 31 is a plan view in which only the upper holder 31F and the second release member 64F are taken out, and the right side is a view in which the first release member 61F is further superimposed to the portion shown in fig. 26. The lock releasing member 60 moves in a direction orthogonal to the rotational axis of the spool 80F, thereby releasing the rotation prohibited state of the spool. In fig. 30 and 31, the first canceling member 64F is shown in a light ink color for easy understanding.

Referring particularly to fig. 22, the lock releasing member 60F includes a first releasing member 61F operated by the user, a second releasing member 64F slidably moved in the vertical direction by the operation of the first releasing member 61F, and an urging portion 69F for urging the second releasing member 64F in a direction opposite to the lock releasing direction. The first release member 61F and the second release member 64F move integrally. The biasing portion 69F is, for example, a coil spring, and biases the first release member 61F and the second release member 64F in a direction away from each other. The first release member 61F, the second release member 64F, and the biasing portion 69F may not be formed of separate members and may be integrally provided.

The first release member 61F includes a release body 62F and a through hole 63F provided substantially at the center of the release body 62F. The lock release body 62F is provided with a pair of screw holes 62aF. The lock release body 62F has a substantially circular shape in plan view, but a part thereof protrudes to form an operation portion. The pair of leg portions 57cF of the link member 57F pass through the through hole 63F.

Referring to fig. 22 and 30, the second release member 64F includes a release body 65F and a projection 66F projecting from the release body 65F. A through hole 67F is formed in a substantially central portion of the release main body 65F, and a pair of screw holes 68dF are provided around the through hole 67F. The pair of leg portions 57cF of the link member 57F pass through the through hole 67F. The screw that passes through the screw hole 62aF of the first release member 61F passes through the pair of screw holes 68dF. The protruding portion 66F is provided with a hole portion 66aF. A pin member 69aF located at the end of the biasing member 69F penetrates the hole 66aF. Thereby, the lock releasing member 62F is urged in the direction opposite to the lock releasing direction.

Next, the operation of the lock releasing member 60F will be described. As shown in fig. 31 a, when the first release member 61F of the lock release member 60F is rotated counterclockwise (about 45 degrees), the second release member 64F is also rotated counterclockwise in the same manner. As shown in part (B) of fig. 31, the engagement teeth 32cF of the rib 32aF of the upper holder 31F are covered by the arc portion 67aF of the second release member 64F, the

engagement claws

73F, 93F of the lock member 70F move inward, and the spool 80F coupled to the lock member 70F is rotatable. By moving the lock release member 60F in the direction perpendicular to the rotation axis of the spool 80F in this way, the engagement between the lock member 70F and the upper holder 31F can be released.

(one-way clutch mechanism)

The one-way clutch mechanism will be described with reference to fig. 26. The one-way clutch mechanism of the present embodiment is performed by moving the lock member 70F in the direction orthogonal to the rotation axis, as in embodiment 1.

The one-way clutch mechanism of the present embodiment is performed by engagement of the engagement teeth 32cF provided on the upper holder 31F with the

engagement claws

73F, 93F provided on the lock member 70F. The

engagement claws

73F, 93F are displaced in the direction orthogonal to the engagement teeth 32cF. The engaging teeth 32cF of the upper holder 31F include a first inclined portion 32dF and a second inclined portion 32eF. The angle formed by the first inclined portion 32dF and the arc portion 32bF is preferably, for example, a right angle. The angle formed by the second inclined portion 32eF and the arc portion 32bF is preferably, for example, an obtuse angle. Thus, the spool 80F is configured to be rotatable in the winding direction T but not rotatable in the feeding direction S.

(operation transmitting part and operation separating part)

The operation transmitting portion and the operation separating portion provided between the rotation operation member 40F and the moving member 50F will be described with reference to fig. 25 and 26. The operation transmission unit and the operation separation unit are substantially the same as those of embodiment 1, and therefore, the drawings are attached to simplify the description.

As shown in part (C) of fig. 28, a drive gear portion 43 is provided on the rear surface of the rotational operation member 40F. As shown in part (a) of fig. 28, a driven gear portion 53F is provided on an upper surface of the moving member 50F.

As shown in fig. 28 (a), when the drive gear portion 43 and the driven gear portion 53F rotate in meshing engagement, the moving member 50F (spool 80F) also rotates in accordance with the rotation of the rotational operation member 40F. When the rotation operation member 40F is further rotated in the winding direction, and the moving member 50F (the reel 80F) is made to be unable to rotate when the winding of the cord 4 is completed, and a load of a predetermined level or more is applied to the meshing between the drive gear portion 43F and the driven gear portion 53F, when the rotation operation member 40F is further rotated, as shown in part (B) of fig. 28, the drive gear portion 43 goes over the driven gear portion 53F, and only the rotation operation member 40F rotates. That is, when a load of a certain level or more is applied to the rotation operation member 40F, the rotational movement of the rotation operation member 40F is not transmitted to the spool 80F.

In addition, the rotary operation member 40F has a one-way clutch structure in which the cord 4 cannot be pulled out, in order to improve operability. When the rotational operation member 40F is rotated in the feeding direction, the drive gear portion 43 goes over the driven gear portion 53F and idles. That is, when a load of a certain level or more is applied to the rotation operation member 40F, the rotational movement of the rotation operation member 40F is not transmitted to the spool 80F.

(about actions)

The operation of the adjustment mechanism 3F according to embodiment 3 will be described. When the rope 4 is to be wound, the rotation operating member 40F is rotated, and when the rope 4 is to be fed, the lock releasing member 60F is rotated to pull the rope 4.

Specifically, when the rope 4 is to be wound, the rotation operation member 40F (the spool 80F) is rotated clockwise as shown in fig. 25 a. Then, as shown in parts (a) to (D) of fig. 26, the engagement between the

engagement claws

73F, 93F of the lock member 70F and the engagement teeth 32cF of the upper holder 31F is disengaged by the one-way clutch mechanism, and the spool 80F rotates clockwise to be engaged with the next engagement teeth 32cF, and the operation is repeated, whereby the spool 80F winds the cord 4.

When the rope 4 is to be fed out, the first release member 61F of the lock release member 60F is rotated clockwise (in the direction of the arrow) as shown in fig. 31 (a) and (B). Then, the second release member 64F rotates, the arc-shaped portion 67aF of the second release member 62F overlaps the engagement teeth 32cF of the upper holder 31F, and the

engagement claws

73F and 93F of the lock member 70F do not engage the engagement teeth 32cF of the upper holder 31F. Thus, the reel 80F is rotatable, and the cord 4 can be fed out by the cord 4.

In the present embodiment, the unlocking member 60F and the unlocking member 70F are formed of different members, but may be integrally formed as in the above-described embodiment.

(modification 1)

The adjustment mechanism 3G in modification 1 will be described with reference to fig. 32. The operation transmission section and the operation separation section of the adjustment mechanism 3G are different in structure. In embodiment 3, the biasing member 56 is provided below the moving member 50F, and the moving member 50F is biased toward the rotational operation member 40F, but in the present modification, the rotational operation member 40G is biased toward the moving member 50G.

Specifically, the adjustment mechanism 3G further includes a lid portion 48G fitted into a recess 46G provided on the upper surface of the rotary operation member 40G. A biasing member 56G that biases the rotation operation member 40G downward is provided between the recess 46G and the lid 48G of the rotation operation member 40G. Thus, when the rotational operation member 40G is rotated in a state exceeding a certain load, the drive gear portion 43 of the rotational operation member 40G is rotated over the driven gear portion 53 of the moving member 50G. In the present modification, when the rotational operation member 40G is idly moved, the rotational operation member 40G moves up and down.

< embodiment 4>

The adjustment mechanism 3H according to embodiment 4 will be described with reference to fig. 33 and 34. Only the differences from the adjustment mechanism 3C shown in embodiment 2 will be described in detail. The present embodiment differs in that a rotation operation member is not provided and a biasing member 110H that biases the spool 80C in the winding direction is provided. The adjustment mechanism 3H is attached to various parts of the childcare apparatus, and in the following description, the upper part on the paper of fig. 33 is described as the upper part of the adjustment mechanism 3H, and the lower part on the paper is described as the lower part of the adjustment mechanism 3H.

The adjustment mechanism 3H of the present embodiment includes the cord 4, the holder 30C, the lock release member 60C, the lock member 70C, the spool 80C, and the biasing member 110H. The adjusting mechanism 3H can automatically wind the slack rope 4.

The biasing force of the biasing member 110H is set to be smaller than the biasing force with which the movable portion is intended to move downward in the vertical direction. The acting force will be described in detail in the description of the operation. The biasing member 110H is, for example, a coil spring wound in a spiral shape. One end of the urging member 110H located on the radial inner side is fixed to the spool 80C, and the other end located on the radial outer side is fixed to the upper holder 31C. Thereby, the spool 80C is always biased in the winding direction.

In the present embodiment, a coil spring is used as the biasing member 110H, but the biasing member 110H may be any member that biases the spool 80C to rotate in the winding direction of the cord 4, and may be another spring, or may be another biasing member that exerts an elastic biasing force.

As described above, the lock member 70C is a one-way clutch mechanism that allows the rotation of the spool 80C in the winding direction of the cord 4 and prohibits the rotation of the spool 80C in the feeding direction of the cord 4. The one-way clutch mechanism may be configured to include the operation transmission portion and the operation disconnection portion as in the above-described drive gear portion 43 and driven gear portion 53, or may be the same as the configuration described in embodiment 2.

The engagement pawl 72C of the lock member 70C is a spool lock pawl that locks rotation of the spool 80C. The spool lock pawl is displaceable between a first position in which a portion rotating together with the spool 80C is engaged to prohibit rotation of the spool 80C and a second position in which the portion rotating together with the spool 80C is separated to permit rotation of the spool 80C. This operation is performed by the vertical sliding movement of the lock member 70C, as shown in fig. 14 (a) and (B).

The lock member 70C is slid up and down by the lock releasing member 60C. The lock release member 60C is a member that can bring the lock member 70C to the second position and freely rotate the spool 80C.

With reference to fig. 33, the operation of a child seat 1C as a child-care related instrument using the adjustment mechanism 3H in embodiment 4 will be described. The child seat 1C used in the present embodiment has substantially the same basic structure as the child seat 1B shown in fig. 3.

As shown in fig. 34, an adjustment mechanism main body 5H is provided at the upper end of the backrest portion 22 of the child seat 1C. The cord 4 is attached to the turning portion 28 of the raising mechanism 27 of the shoulder strap 23. The raising mechanism 27 of the shoulder belt 23 fixes the shoulder belt 23 so as to open the seat 20, so that the shoulder belt 23 does not become an obstacle when the child is seated.

When the buckle 26 is released from the state shown in fig. 34 (a) and the shoulder strap 23 is moved upward as shown in fig. 34 (B), the string 4 connected to the rotating portion 28 is loosened. The adjustment mechanism 3H is provided with a biasing member 110H (fig. 33) that biases the spool 80C in the winding direction. The biasing member 110H is set to be smaller than the biasing force with which the shoulder belt 23 and the pop-up mechanism 27 are intended to move downward in the vertical direction due to their own weights. In other words, if the shoulder belt 23 and the pop-up mechanism 27 do not apply any more biasing force to move downward in the vertical direction, the biasing member 110H rotates the spool 80C to wind the rope 4.

Since the biasing member 110H is biased in the winding direction, the slack cord 4 is wound around the reel 80C as shown in fig. 34 (C). Thus, the user can wind the slack rope 4 without performing any work, and can smoothly ride and get up the child.

When a child sits on the child seat 1C, as shown in part (D) of fig. 34, the operation portion 61C of the lock release member 60C is operated to release the lock between the lock member 70C and the spool 80C. Since the biasing force of the biasing member 110H is smaller than the biasing force of the shoulder belt 23 and the pop-up mechanism 27 to be moved downward in the vertical direction, the rope 4 is automatically pulled out by the weight of the shoulder belt 23 and the pop-up mechanism 27. Finally, the shoulder straps 23 are connected by buckles 26.

In the present embodiment, the movable portions are the shoulder belt 23 and the raising mechanism 27 of the shoulder belt 23, but may be any member that tends to move downward in the vertical direction due to its own weight. For example, in the reclining mechanism of the stroller, the backrest portion may be a movable portion, and the headrest portion may be a movable portion in the height adjustment of the headrest of the infant carrier.

The movable portion moves downward in the vertical direction, but may be a vertically downward direction perpendicular to the horizontal plane or a vertically inclined downward direction. The force by which the movable portion is to be moved downward in the vertical direction may include not only the own weight of the movable portion itself but also, for example, an urging force by a spring or the like to move the movable portion downward in the vertical direction.

In the present embodiment, the lock releasing member 60C and the lock member 70C are different members, but the lock releasing member 60C and the lock member 70C may be provided integrally.

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

Claims

1. A child-care appliance comprising a main body, an extension part extending from the main body, and an adjustment mechanism for adjusting the position or shape of the extension part,

the adjustment mechanism includes:

a string having one end connected to the main body and the other end held by the extension portion;

a reel that is rotatable in both forward and reverse directions and changes the position or shape of the extension portion by winding and unwinding the cord; and

a rotation locking mechanism that inhibits rotation of the spool.

2. A childcare-related apparatus according to claim 1, wherein the childcare-related apparatus is a seated childcare apparatus,

the main body portion is a seat for receiving a child, the extension portions are a pair of shoulder straps extending from the seat and restraining shoulders of the child,

the cord is provided with a pair of cords which are held at the ends of a pair of shoulder straps, respectively.

3. A childcare-related apparatus according to claim 1, wherein the childcare-related apparatus is a seated childcare apparatus,

the main body part is a seat for receiving a child, the extension part is a crotch strap extending from the seat part and restraining a crotch of the child,

the string is held at an end of the crotch strap.

4. A childcare-related apparatus according to claim 1, wherein the childcare-related apparatus is a child seat,

the main body portion is a child seat body, and the extension portion is ISOFIX extending rearward from the child seat body.

5. A childcare-related apparatus according to claim 1, wherein the childcare-related apparatus is an infant carrier,

the main body portion is an infant carrier main body, and the extension portion is a movable portion extending from the infant carrier main body.

6. A childcare-related appliance according to claim 5, wherein the infant carrier body includes a parent-side shoulder strap that wraps around a parent's shoulder and a parent-side waist strap that wraps around a parent's waist,

the extension portion is a portion that is provided extending from the parent side shoulder belt or the parent side waist belt.

7. A childcare-related appliance according to claim 5 or 6, wherein the infant carrier body comprises a child support portion that supports the body of a child,

the extension is a portion extending from the child support.

8. The childcare apparatus according to any one of claims 1 to 6, further comprising a lock releasing member that releases a rotation prohibition state of the reel by the rotation lock mechanism and allows the reel to rotate freely.