Bicycle child seat

Abstract

To provide a bicycle child seat that improves user convenience by allowing adjustment of the belt tightness. [Solution] In one embodiment, the child seat 1 comprises a seat body 10 that can be attached to a bicycle, the seat body 10 comprising a seat portion 11, a back portion 12, a belt member 16 having a pair of shoulder belts 16a, a locking mechanism 17 through which the belt member 16 is inserted and which restricts the movement of the belt member 16 in a direction D1 in which the length of the portion of the shoulder belts 16a exposed in front of the back portion 12 increases, a storage mechanism 18 that accommodates the second end 16f of the belt member 16 opposite to the first end 16e located above the seat portion 11 and stores the belt member 16 by pulling it in a direction D2 opposite to direction D1, and a support structure 19 located between the locking mechanism 17 and the storage mechanism 18, which assists the user in accessing the belt member 16 from the outside of the seat body 10 and pulling the belt member 16.

Description

Technical Field

[0001] The present disclosure relates to a child seat for a bicycle.

Background Art

[0002] Conventionally, a child seat (child seat for a bicycle) that can be attached to a bicycle has been known. Patent Document 1 describes a child seat having a safety belt (including a pair of shoulder belts) that restrains the body of a seated infant to the chair body. In the child seat of Patent Document 1, a winding device for winding the safety belt and a locking means for locking the movement of the safety belt are integrally configured.

[0003] The child seat described in Patent Document 2 has a belt member having a pair of shoulder belts that restrain both shoulders of a child seated on the seat portion, and an adjustment belt connected to the pair of shoulder belts that merge with each other, a belt adjustment portion that restricts the movement of the adjustment belt so that the exposed length of the shoulder belt to the front side of the back becomes longer, and a winding portion that winds up and accommodates the adjustment belt. An adjustment area is provided between the belt adjustment portion and the winding portion, through which it is possible to access the belt member from the outside of the seat body and pull the belt member.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the child seat described in Patent Document 1, the winding device and the locking mechanism are integrated, so if the child sitting in the seat is holding the safety belt loosely or in a bent-over position and the safety belt is locked, there is a risk that the child will be left in a state where the shoulder belts do not restrain the child. In contrast, in the bicycle child seat described in Patent Document 2, the movement of the adjustment belt in the direction that loosens the shoulder belt restraint is restricted by the belt adjustment part, and by pulling the part of the belt member located in the adjustment area, the restraint of the child by the shoulder belts can be adjusted to be stronger.

[0006] As described above, the structure described in Patent Document 2 can resolve the problems of the structure described in Patent Document 1, but there is room for improvement in terms of further enhancing the convenience of the user when adjusting the tightness of the belt.

[0007] One aspect of this disclosure is to provide a bicycle child seat that can improve the convenience of the user in adjusting the tightness of the belt. [Means for solving the problem]

[0008] This disclosure includes the bicycle child seats [1] to [8].

[0009] [1] Equipped with a seat body that can be attached to a bicycle, The aforementioned seat body is The seat is designed so that the child sits facing forward, The backrest extends upward from the rear end of the aforementioned seat, A belt member having a pair of shoulder belts that restrain both shoulders of a child seated on the aforementioned seat, A locking mechanism that restricts the movement of the belt member in a first direction through which the belt member is inserted and the length of the portion of the shoulder belt exposed to the front of the back increases, A storage mechanism that accommodates the second end of the belt member located above the seat portion, opposite to the first end, and pulls the belt member in the second direction opposite to the first direction for storage. A support structure is located between the locking mechanism and the storage mechanism, configured to allow access to the belt member from the outside of the seat body, and to assist the user in pulling the belt member in the second direction. A bicycle child seat equipped with [features / equipment].

[0010] In the bicycle child seat described in [1] above, the user can shorten the length of the portion of the shoulder belt that is exposed to the front of the back by pulling the accessible portion of the belt member between the locking mechanism and the storage mechanism in a second direction. Furthermore, since the movement of the belt member in the first direction is restricted by the locking mechanism, the portion of the belt member that is pulled between the locking mechanism and the storage mechanism by the above pulling operation is stored in the storage mechanism without moving in the first direction. Therefore, if the restraint (tightening) of the child by the belt member is loose, the tightening can be easily increased by the above pulling operation. Moreover, in the bicycle child seat described above, a support structure is provided on the accessible portion of the belt member to assist the above pulling operation, thereby improving the convenience of the user in adjusting the tightness of the belt by the above pulling operation.

[0011] [2] The child seat for bicycles according to [1], wherein the distance from the support structure to the locking mechanism is shorter than the distance from the support structure to the storage mechanism.

[0012] According to the configuration described in [2] above, the support structure is located closer to the locking mechanism than to the storage mechanism. Therefore, the user can easily move the belt member in a direction (second direction) that shortens the length of the portion of the shoulder belt that is exposed to the front of the back by moving the portion of the belt member closer to the location of the support structure toward the storage mechanism. As a result, the user does not need to pull the belt member backward, for example, and thus the workspace required to pull the belt member can be reduced.

[0013] [3] The support structure has a recess provided on at least one of the rear surface of the backrest and the lower surface of the seat, The belt member extends over the recess and is a bicycle child seat of [1] or [2].

[0014] According to the configuration described in [3] above, the user can easily grasp the portion of the belt member that passes over the recess by inserting their finger into the recess, making it easier to perform the pulling operation. Furthermore, the user can easily identify the location where the belt member can be pulled by using the recess as a guide. Therefore, according to the above configuration, the convenience of the user in adjusting the tightness of the belt by the pulling operation can be more effectively improved.

[0015] [4] The support structure has a protrusion provided on at least one of the rear surface of the backrest and the lower surface of the seat, The belt member extends over the protrusion and is one of the bicycle child seats [1] to [3].

[0016] According to the configuration described in [4] above, the user can easily grasp the portion of the belt member that passes over the protrusion, making it easier to perform the pulling operation. Furthermore, the user can easily identify the location where the belt member can be pulled by using the portion of the belt member that protrudes outward due to the protrusion as a guide. Therefore, according to the above configuration, the convenience of the user in adjusting the tightness of the belt by the pulling operation can be more effectively improved.

[0017] [5] The support structure is configured to be graspable by the user and has an annular member through which the belt member is inserted, a bicycle child seat according to any of [1] to [4].

[0018] According to the configuration described in [5] above, the user can easily perform the pulling operation of the belt member by inserting their fingers into the space between the annular member and the belt member, grasping the annular member, and pulling it.

[0019] [6] The support structure is configured to be grippable by the user, and is attached to the belt member so as to be able to switch between a free state in which it can move relative to the belt member and a fixed state in which it is fixed to the belt member, and is a child seat for a bicycle according to any one of [1] to [5].

[0020] According to the configuration of [6] above, the user can prevent the fixing portion from slipping relative to the belt member by gripping the fixing portion and pulling the fixing portion with the state of the fixing portion being in the fixed state, so that the belt member can be easily pulled in the second direction to increase the tightening of the belt member. Thereby, the operability of the pulling operation can be more effectively improved.

[0021] [7] The support structure has an operating mechanism configured to be able to execute an operation of pulling the belt member in the second direction at a second position closer to the locking mechanism than the first position while fixing the belt member at the first position, and is a child seat for a bicycle according to any one of [1] to [6].

[0022] According to the configuration of [7] above, the user can easily pull the belt member in the second direction to increase the tightening of the belt member by operating the operating mechanism. Thereby, the operability of the pulling operation can be more effectively improved.

[0023] [8] The locking mechanism is configured to allow the movement of the belt member in the second direction while maintaining a state in which the movement of the belt member in the first direction is restricted, and is a child seat for a bicycle according to any one of [1] to [7].

[0024] According to the configuration described in [8] above, the belt member can be moved in the second direction simply by pulling the portion of the belt member located between the locking mechanism and the storage mechanism, without performing any special operation to release the restriction of the belt member to the first direction by the locking mechanism. Furthermore, the restriction of the belt member's movement in the first direction by the locking mechanism is not released as a trigger for the pulling operation. Therefore, the user can store the portion of the belt member that has been pulled between the locking mechanism and the storage mechanism by the pulling operation into the storage mechanism simply by releasing their hand from the belt member after performing the pulling operation. Thus, by providing such a locking mechanism, the convenience of the user in adjusting the tightness of the belt by pulling can be more effectively improved. [Effects of the Invention]

[0025] According to one aspect of this disclosure, it is possible to provide a bicycle child seat that can improve the convenience of the user in adjusting the tightness of the belt. [Brief explanation of the drawing]

[0026] [Figure 1] Figure 1 is a schematic side view showing a child seat for a bicycle according to one embodiment. [Figure 2] Figures 2(a) and (b) are schematic diagrams showing an example of a locking mechanism. [Figure 3] Figure 3 is a cross-sectional view of a bicycle child seat, showing an example of a support structure for a bicycle child seat. [Figure 4] Figure 4 is a schematic diagram showing the support structure of a bicycle child seat according to the first modified example. [Figure 5] Figure 5 is a schematic diagram showing the support structure of a bicycle child seat according to the second modified example. [Figure 6] Figure 6 is a schematic diagram showing the support structure of a bicycle child seat according to the third modified example. [Figure 7]Figure 7 is a schematic diagram showing the support structure of a bicycle child seat according to the fourth modified example. [Figure 8] Figure 8 is a schematic diagram showing the support structure of a bicycle child seat according to the fifth modified example. [Figure 9] Figures 9(a) to 9(c) are schematic diagrams showing the support structure of a bicycle child seat according to the sixth modified example. [Figure 10] Figures 10(a) to (c) are schematic diagrams showing a modified locking mechanism. [Modes for carrying out the invention]

[0027] Hereinafter, one embodiment of the present disclosure will be described in detail with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0028] The bicycle child seat (hereinafter simply referred to as "child seat 1") according to one embodiment shown in Figure 1 is attached to a bicycle for seating a child such as an infant. In this specification, unless otherwise specified, the terms "front," "rear," "left," "right," "up," "down," "front-rear direction," "left-right direction," and "up-down direction" with respect to the child seat 1 mean "front," "rear," "left," "right," "up," "down," "front-rear direction," "left-right direction," and "up-down direction" relative to the child seated in the child seat 1. The "front-rear direction" is the direction of movement parallel to the ground contact surface of the bicycle equipped with the child seat 1. The "up-down direction" is the direction perpendicular to both the front-rear direction and the ground contact surface. The "left-right direction" is the direction perpendicular to both the front-rear direction and the up-down direction.

[0029] In Figures 1 to 10, for convenience, the "front-back direction" is represented as the X-axis direction, the "left-right direction" as the Y-axis direction, and the "up-down direction" as the Z-axis direction. The positive X-axis direction corresponds to "rear," and the negative X-axis direction corresponds to "front." Similarly, the positive Y-axis direction corresponds to "right," and the negative Y-axis direction corresponds to "left." Furthermore, the positive Z-axis direction corresponds to "up," and the negative Z-axis direction corresponds to "down." In the "left-right direction," the side approaching the child seated in the child seat 1 (the left-right center of the child seat 1) is called the "inside (left-right direction)," and the side moving away from the child is called the "outside (left-right direction)." Unless otherwise specified, in this specification, "child" means a child seated on a bicycle equipped with the child seat 1, and "user" means the user of the child seat 1 (for example, the driver who drives with a child in the child seat 1).

[0030] Child seat 1 comprises a seat body 10. The seat body 10 is attached to a bicycle. The seat body 10 has a seat portion 11, a back portion 12, side guards 13, footrests 14, and a head guard 15. In this embodiment, as an example, the seat portion 11, back portion 12, side guards 13, and footrests 14 are integrally constructed.

[0031] The seat portion 11 is the part on which the child K sits. The child K sits on the seat portion 11 facing forward. On both the left and right sides of the upper surface 11a of the seat portion 11, there are belt insertion holes (not shown) through which the waist belt 61 is inserted and pulled out upwards from the seat portion 11. The end of the waist belt 61 opposite to the buckle 20 is fixed to a fixing member (not shown) located, for example, below the seat portion 11. The seat portion 11 has a lower surface 11b that faces away from the upper surface 11a.

[0032] The side guards 13 are erected so as to extend upward from both ends of the seat 11 in the left-right direction. The side guards 13 are designed to prevent the child K from flying outwards and to prevent the child K from coming into contact with the ground when the bicycle equipped with the child seat 1 falls over.

[0033] The footrests 14 are for resting the child K's feet and are provided on both the left and right sides. The footrests 14 have a portion 14a that extends downward from the front end of the seat 11 so as to follow the child K's legs (the part below the knees), and a portion 14b that extends forward from the lower end of portion 14a so as to rest the child K's feet (the bottom surface of the shoes). The head guard 15 is a member for protecting the child K's head. The head guard 15 may be supported by the backrest 12 so as to be movable (slidable) in the vertical direction.

[0034] The backrest 12 is the part that supports the back of the child K. The backrest 12 extends upward from the rear end of the seat 11. The left and right ends of the backrest 12 are connected to the rear ends of the side guards 13. The backrest 12 has a front wall 21 and a rear wall 22.

[0035] The front wall portion 21 is erected so as to extend upward at the rear end of the seat portion 11. The rear wall portion 22 is positioned behind the front wall portion 21 and spaced apart from it. That is, a space S1 is provided between the front wall portion 21 and the rear wall portion 22. The front surface of the front wall portion 21 constitutes the front surface 12a of the back portion 12, and the rear surface of the rear wall portion 22 constitutes the rear surface 12b of the back portion 12. For example, the front surface 12a is continuous with the upper surface 11a of the seat portion 11 and the inner surface of the side guard 13, and the rear surface 12b is continuous with the outer surfaces of the side guards 13 on both the left and right sides.

[0036] The seat body 10 includes a belt member 16, a locking mechanism 17, a storage mechanism 18, a support structure 19, a pair of left and right waist belts 61, a crotch belt 62, and a buckle 20. The belt member 16 has a pair of left and right shoulder belts 16a and an adjustment belt 16b. The pair of shoulder belts 16a restrain both shoulders of a child K seated on the seat 11. The head guard 15 is provided with a pair of belt insertion holes (not shown), and the pair of shoulder belts 16a are pulled out from the pair of belt insertion holes toward the front of the backrest 12. The pair of shoulder belts 16a have a first end 16e located toward the front of the backrest 12 and above the seat 11. Each first end 16e of the pair of shoulder belts 16a, and the pair of waist belts 61 are configured to be connectable to a buckle 20 fixed to the end of the crotch belt 62. The child K is restrained to the seat body 10 by fastening the pair of shoulder belts 16a, the pair of waist belts 61, and the crotch belt 62 to the buckle 20, with each of them being fastened to the buckle 20.

[0037] Each of the pair of shoulder straps 16a is inserted through each of the pair of belt insertion holes in the head guard 15 and is configured to pass through space S1. The pair of shoulder straps 16a are connected to each other in a V-shape within space S1. The belt connection section C, where the pair of shoulder straps 16a are connected to each other, is located in the center in the left-right direction. The pair of shoulder straps 16a meet at the belt connection section C and are connected to one end of the adjustment belt 16b.

[0038] The adjustment belt 16b adjusts the length of a pair of shoulder straps 16a that are exposed in front of the back panel 12. The adjustment belt 16b is located in the center in the left-right direction. In space S1, the adjustment belt 16b extends from the belt connection part C toward the lower end of the back panel 12. The adjustment belt 16b is inserted into the locking mechanism 17 at approximately the center in the vertical direction of the back panel 12 and is wound into the storage mechanism 18 at the lower end of the back panel 12. Therefore, the second end 16f of the adjustment belt 16b opposite to the belt connection part C (i.e., the end opposite to the first end 16e of the belt member 16) is housed inside the storage mechanism 18. An adjustment region R is provided between the locking mechanism 17 and the storage mechanism 18, from which the adjustment belt 16b can be pulled. The adjustment region R is an area where the adjustment belt 16b can be accessed from the outside of the seat body 10 (i.e., an area where the adjustment belt 16b is exposed to the outside), and is an area where no wall or other structure is provided to cover the area below the adjustment belt 16b.

[0039] The locking mechanism 17 restricts the movement of the belt member 16. The locking mechanism 17 is located between the belt connecting portion C and the storage mechanism 18. That is, the adjustment belt 16b is inserted through the locking mechanism 17. As an example, the locking mechanism 17 is located approximately in the center of the back portion 12 in the vertical direction and approximately in the center of the back portion 12 in the horizontal direction. In this embodiment, a part of the locking mechanism 17 is contained within space S1, and the other part of the locking mechanism 17 (at least the part including the lever 723 described later) is exposed to the rear of the back portion 12. The locking mechanism 17 restricts the movement of the belt member 16 in the direction D1 (first direction) in which the length of the portion of the shoulder belt 16a exposed to the front of the back portion 12 increases (i.e., the direction in which the restraint of the child K by the pair of shoulder belts 16a loosens). That is, the locking mechanism 17 restricts the movement of the adjustment belt 16b in the direction D1 in which the adjustment belt 16b is pulled out from the storage mechanism 18 and the belt connecting portion C moves upward in space S1. In this embodiment, the locking mechanism 17 is configured to allow movement of the adjustment belt 16b in the direction D2 (second direction) opposite to direction D1 (i.e., the direction in which the restraint of the child K by the pair of shoulder belts 16a becomes tighter). For example, the locking mechanism 17 is configured to allow movement of the adjustment belt 16b in direction D2 while maintaining a state in which movement of the adjustment belt 16b in direction D1 is restricted.

[0040] Referring to Figure 2, an example of a locking mechanism 17 that realizes the functions described above will be explained. In Figure 2, (a) shows the locked state (in this embodiment, a state in which movement of the adjustment belt 16b in direction D1 is restricted while movement of the adjustment belt 16b in direction D2 is permitted), and (b) shows the unlocked state (a state in which movement of the adjustment belt 16b in directions D1 and D2 is permitted). As shown in Figure 2, the locking mechanism 17 has a support shaft 71, a restricting member 72, and a torsion coil spring 80. The support shaft 71 is connected to a bracket (not shown). The restricting member 72 is rotatably supported by the support shaft 71.

[0041] The regulating member 72 has a substantially cylindrical body 721, a claw portion 722 provided on the circumferential surface of the body 721, and a lever 723 operated by the user. The lever 723 is exposed to the rear from the back portion 12. The user can switch between the locked and unlocked states of the locking mechanism 17 by operating the exposed portion of the lever 723. That is, in the locked state shown in Figure 2(a), the locking mechanism 17 can be switched to the unlocked state shown in Figure 2(b) by pushing the lever 723 in direction D3 (counterclockwise in Figure 2). However, in the locking mechanism 17, a torsion coil spring 80 is wound around the support shaft 71 and biases the body 721 so that the claw portion 722 rotates forward (clockwise in Figure 2). For this reason, the unlocked state of the locking mechanism 17 is maintained only when force is applied to the lever 723 to unlock it. In other words, when the user releases their hand from the lever 723 while the device is unlocked, the locking mechanism 17 automatically returns to the locked state.

[0042] The adjustment belt 16b is located between the regulating member 72 and the pressing wall 23 of the back portion 12, and in the locked state, the claw portion 722 is biased toward the pressing wall 23. The pressing wall 23 is positioned opposite the regulating member 72 with the adjustment belt 16b in between. For example, the pressing wall 23 is located in space S1. The pressing wall 23 may be part of the front wall portion 21, or it may be a different member from the front wall portion 21. As a modification, a hole for inserting the adjustment belt 16b may be provided above the locking mechanism 17 in the rear wall portion 22, and as in the example in Figure 5, the locking mechanism 17 and the portion of the adjustment belt 16b inserted into the locking mechanism 17 may be exposed to the rear (outside) of the rear wall portion 22. In this case, the portion of the rear wall portion 22 that faces the regulating member 72 may function as the pressing wall 23 of this embodiment.

[0043] As shown in Figure 2(a), in the locked state, the adjustment belt 16b is sandwiched between the pressing wall 23 and the claw portion 722, causing the claw portion 722 to bite into the adjustment belt 16b. When the adjustment belt 16b is pulled in direction D1 from this state, the restricting member 72 attempts to rotate clockwise, causing the claw portion 722 to bite into the adjustment belt 16b even more. This restricts the movement of the adjustment belt 16b in direction D1.

[0044] On the other hand, in the locked state, if a force exceeding a certain level is applied to pull the adjustment belt 16b in direction D2, the restricting member 72 rotates around the support shaft 71 so that the claw portion 722 moves backward (i.e., counterclockwise in Figure 2). As a result, the engagement of the claw portion 722 with the adjustment belt 16b is temporarily released, and movement of the adjustment belt 16b in direction D2 is permitted. When the force pulling the adjustment belt 16b in direction D2 exceeds a certain level, the biasing force of the torsion coil spring 80 automatically returns it to the locked state shown in Figure 2(a). In other words, the locking mechanism 17 allows movement of the adjustment belt 16b in direction D2 while maintaining a state in which movement of the adjustment belt 16b in direction D1 is restricted.

[0045] As shown in Figure 2(b), in the unlocked state, the adjustment belt 16b can move in either direction D1 or D2. Therefore, for example, the user can pull the shoulder belt 16a forward by pushing the lever 723 in direction D3 and pulling the shoulder belt 16a, which is exposed in front of the back 12, forward. As a result, the restraint of the child K by the shoulder belt 16a can be loosened.

[0046] As described above, the restricting member 72 (locking mechanism 17) is configured to allow pulling motions that attempt to increase the restraining force of the shoulder belt 16a by pulling the adjustment belt 16b downward (i.e., movement of the adjustment belt 16b in direction D2) while restricting motions that attempt to loosen the restraining force of the shoulder belt 16a by pulling the shoulder belt 16a forward of the back 12 (i.e., movement of the adjustment belt 16b in direction D1).

[0047] The storage mechanism 18 is a component that retracts and stores the adjustment belt 16b in direction D2. In this embodiment, the storage mechanism 18 has a winding type configuration that winds up and stores the adjustment belt 16b, but it may also have a configuration other than winding (for example, a retraction type using a tension coil or compression coil, etc.). The storage mechanism 18 is located below the locking mechanism 17 and spaced apart from the locking mechanism 17. In this embodiment, the storage mechanism 18 is located near the boundary between the seat portion 11 and the back portion 12 in space S1, but it may also be located in other locations (for example, below the seat portion 11 in front of the boundary).

[0048] The storage mechanism 18 is biased to wind the adjustment belt 16b in direction D2, but the force with which the storage mechanism 18 winds the adjustment belt 16b in direction D2 is smaller than the force required to rotate the regulating member 72 around the pivot shaft 71 so that the claw portion 722 moves forward (i.e., counterclockwise in Figure 2). In other words, when the locking mechanism 17 is locked, the portion of the adjustment belt 16b located closer to the head guard 15 than the locking mechanism 17 is not moved in direction D2 by the storage mechanism 18. On the other hand, any slack in the adjustment belt 16b that occurs in the adjustment region R is automatically wound up by the storage mechanism 18.

[0049] The support structure 19 is located between the locking mechanism 17 and the storage mechanism 18. The support structure 19 is configured to allow access to the belt member 16 from the outside of the seat body 10 and to assist the user in pulling the belt member 16 in direction D2. The support structure 19 is composed of, for example, an adjustment area R and a structure provided in the adjustment area R to assist the pulling operation. The "assistance to the pulling operation" realized by the support structure 19 includes improving the operability of pulling the adjustment belt 16b in direction D2, and may also include being useful to the user before and after the pulling operation (for example, making the position where the adjustment belt 16b can be pulled easily visible to the user). In this embodiment, as an example, the support structure 19 has a morphological feature (recess 91) provided on the rear surface 12b of the backrest 12. The "morphological feature" provided on the rear surface 12b is, for example, a part that has a shape that can be distinguished from other parts of the rear surface 12b. Furthermore, if the storage mechanism 18 is provided below the seat portion 11, the support structure 19 may be provided on the lower surface 11b of the seat portion 11. In this case, the support structure 19 may be composed of a shape feature (for example, a recess similar to the recess 91) provided on the lower surface 11b of the seat portion 11. The "shape feature" provided on the lower surface 11b is, for example, a part that has a shape distinguishable from other parts of the lower surface 11b.

[0050] As shown in Figure 3, the recess 91 has a shape that is recessed toward the space S2 above the seat 11 and in front of the backrest 12 (the space where the upper part of a seated child K is placed). The adjustment belt 16b extends so as to pass over the recess 91. That is, when viewed from the rear, the adjustment belt 16b overlaps with the recess 91.

[0051] As shown in Figure 3, in this embodiment, the recess 91 is provided in the rear wall portion 22. More specifically, a part of the rear wall portion 22 that is formed to recess toward the space S2 side functions as the recess 91. Belt insertion holes 91a and 91b are formed in the inner surface 91c that defines the recess 91. Belt insertion hole 91a is provided above the vertical center of the inner surface 91c, and belt insertion hole 91b is provided below the vertical center of the inner surface 91c. An adjustment belt 16b is inserted through the belt insertion holes 91a and 91b. The adjustment belt 16b is passed through the lock mechanism 17, belt insertion hole 91a, recess 91 (the space of the recessed portion formed by the recess 91), and belt insertion hole 91b in this order. The belt insertion holes 91a and 91b are located, for example, on a straight line connecting the lock mechanism 17 and the storage mechanism 18. This prevents the adjustment belt 16b from bending when it passes through the belt insertion holes 91a and 91b. In this embodiment, a portion of the area where the recess 91 is provided (the portion between the belt insertion holes 91a and 91b) is configured as the adjustment region R. That is, in this embodiment, a portion of the area where the recess 91 is provided functions as the adjustment region R. However, the adjustment region R and the recess 91 do not necessarily have the relationship described above. For example, as in the second modified example described later (see Figure 5), a recess 91B may be provided in a portion of the adjustment region R. That is, a pair of belt insertion holes may be provided on the rear surface 12b so as to sandwich the recess 91 in the vertical direction.

[0052] [Effects and Effects] In the child seat 1, the user can shorten the length of the portion of the shoulder belt 16a (belt member 16) that is exposed in front of the backrest 12 by pulling the adjustment area R, which is the accessible part of the adjustment belt 16b (belt member 16) between the locking mechanism 17 and the storage mechanism 18, in direction D2. Furthermore, since the movement of the adjustment belt 16b in direction D1 is restricted by the locking mechanism 17, the portion of the adjustment belt 16b that is pulled between the locking mechanism 17 and the storage mechanism 18 by the above pulling operation is stored in the storage mechanism 18 without moving in direction D1. Therefore, by the above pulling operation, it is possible to easily increase the tightening of the shoulder belt 16a if the restraint (tightening) of the child is loose. In addition, the child seat 1 is provided with a support structure 19 that assists the pulling operation in the location where the adjustment area R is located, thereby improving the convenience of the user in adjusting the tightness of the belt by the above pulling operation. Furthermore, since the pulling operation to increase the tightening of the belt member 16 becomes easier in this way, the occurrence of situations in which the user is riding the bicycle with the child loosely restrained can be reduced, thereby improving safety.

[0053] In the child seat 1, the support structure 19 has a recess 91 provided on the rear surface 12b of the backrest 12, and the adjustment belt 16b extends so as to pass over the recess 91. With this configuration, the user can easily grasp the portion of the adjustment belt 16b that passes over the recess 91 by inserting their fingers into the recess 91, making it easier to pull. Furthermore, the user can easily identify the point where the adjustment belt 16b can be pulled by using the recess 91 as a guide. Therefore, with the above configuration, the convenience of the user in adjusting the tightness of the belt by the pulling operation can be more effectively improved. In addition, the operability of adjusting the tightness of the belt can be improved with a simple and inexpensive structure.

[0054] In the child seat 1, the locking mechanism 17 is configured to allow the adjustment belt 16b to move in direction D2 while maintaining a state in which the movement of the adjustment belt 16b in direction D1 is restricted. With this configuration, the adjustment belt 16b can be moved in direction D2 simply by pulling the portion of the adjustment belt 16b located between the locking mechanism 17 and the storage mechanism 18, without performing any special operation to release the restriction of the adjustment belt 16b to direction D1 by the locking mechanism 17 (i.e., while remaining in the locked state shown in Figure 2(a)). Furthermore, the restriction of the movement of the adjustment belt 16b in direction D1 by the locking mechanism 17 is not released by the above pulling operation. Therefore, the user can store the portion of the adjustment belt 16b that has been pulled between the locking mechanism 17 and the storage mechanism 18 by the above pulling operation into the storage mechanism 18 simply by releasing their hand from the adjustment belt 16b after performing the pulling operation. Thus, by providing such a locking mechanism 17, the convenience of the user in adjusting the tightness of the belt by the above pulling operation can be more effectively improved.

[0055] [Differentiation] The configuration of the child seat described herein is not limited to the configuration shown in the above embodiments. Several variations of the child seat are described below.

[0056] (First variation) As shown in Figure 4, the first modified child seat 1A differs from the child seat 1 in that it has a support structure 19A instead of the support structure 19. The support structure 19A differs from the support structure 19 in that it has a convex portion 92 instead of a concave portion 91.

[0057] The protrusion 92 is raised so as to be separated from the space S2. The adjustment belt 16b extends so as to pass over the protrusion 92. That is, when viewed from the rear, the adjustment belt 16b overlaps with the protrusion 92. Belt insertion holes 92a and 92b are formed in the rear wall 22 so as to sandwich the protrusion 92. Belt insertion hole 92a is formed above the protrusion 92, and belt insertion hole 92b is formed below the protrusion 92. The adjustment belt 16b passing over the protrusion 92 is maintained with appropriate tension. For this reason, as in the example in Figure 4, by configuring the protrusion 92 such that its outer surface (the surface above the top) is located inside the line segment connecting the belt insertion hole 92a and the top of the protrusion 92, the portion 16g of the adjustment belt 16b located between the top of the protrusion 92 and the belt insertion hole 92a is separated from the rear wall 22. Similarly, as shown in the example in Figure 4, by configuring the protrusion 92 such that its outer surface (the surface below the top) is located inside the line segment connecting the belt insertion hole 92b and the top of the protrusion 92, the portion 16h of the adjustment belt 16b located between the top of the protrusion 92 and the belt insertion hole 92b is separated from the rear wall portion 22. In other words, a space S3 is provided between portions 16g, 16h and the rear wall portion 22.

[0058] With the child seat 1A equipped with the support structure 19A, the user can easily grasp the portion of the adjustment belt 16b that passes over the protrusion 92, making it easier to perform the pulling operation. More specifically, the portion of the adjustment belt 16b that passes over the protrusion 92 protrudes rearward due to the protrusion 92, so the user can easily grasp this protruding portion. Furthermore, when the protrusion 92 is configured to form a space S3 as in this embodiment, the user can insert their fingers into the space S3 and grasp portions 16g and 16h of the adjustment belt 16b even more easily. In addition, the user can easily grasp the location where the belt member 16 can be pulled by using the portion of the belt member 16 that protrudes rearward due to the protrusion 92 as a marker. Therefore, with the above configuration, the operability of the belt tightening operation by pulling can be more effectively improved.

[0059] (Second variation) As shown in Figure 5, the second modified child seat 1B differs from child seat 1 in that it has a support structure 19B instead of a support structure 19. The support structure 19B differs from support structure 19 in that it has a recess 91B instead of a recess 91. There is no belt insertion hole on the inner surface defining the recess 91B, and the adjustment belt 16b extends along the rear surface 12b behind the backrest 12. The entire locking mechanism 17 is located behind the rear surface 12b. Thus, in child seat 1B, the entire locking mechanism 17 and the adjustment belt 16b are exposed behind the backrest 12, so the adjustment area R is wide. Also, in child seat 1B, the distance d1 from the recess 91B to the locking mechanism 17 (in this embodiment, the part where the adjustment belt 16b is pressed against the rear wall 22 by the claw portion 722) is shorter than the distance d2 from the recess 91B to the storage mechanism 18.

[0060] In the child seat 1B equipped with the support structure 19B, the support structure 19B is located closer to the locking mechanism 17 than to the storage mechanism 18. Therefore, the user can easily move the adjustment belt 16b in direction D2 by moving the part of the belt member 16 closest to the location of the support structure 19B toward the storage mechanism 18. In the example in Figure 5, the user can easily pull the adjustment belt 16b in direction D2 by grasping the part of the adjustment belt 16b that overlaps with the recess 91B and pulling it downwards. As a result, the user does not need to pull the adjustment belt 16b backward (to the right in Figure 5), and the workspace required to pull the adjustment belt 16b (the space in the front-to-back direction in the example in Figure 5) can be reduced.

[0061] (Third variation) As shown in Figure 6, the third modified child seat 1C differs from child seat 1 in that it has a support structure 19C instead of a support structure 19. The support structure 19C has an annular member 93 attached to the adjustment belt 16b as an operating member operated by the user when pulling the adjustment belt 16b in direction D2. The annular member 93 has the function of improving the operability of the pulling operation. Specifically, the annular member 93 makes it easier for the user to apply force to the belt member 16 when pulling the belt member 16. The adjustment belt 16b is inserted through the annular member 93. The annular member 93 is configured to be gripped by the user. As an example, the annular member 93 has a D shape and has a straight section 93a located on the inside of the adjustment belt 16b (the side where space S2 is located relative to the adjustment belt 16b) and a curved gripping section 93b located on the outside of the adjustment belt 16b. In this example, the gripping portion 93b of the annular member 93 that is exposed behind the adjustment belt 16b functions as the part that is gripped by the user. For example, a space S4 is provided between the gripping portion 93b and the outer surface of the adjustment belt 16b that is large enough for the user's fingers to be inserted. The straight portion 93a also functions as the part that applies force to the belt member 16 when the user grasps the gripping portion 93b and pulls the annular member 93.

[0062] With the child seat 1C equipped with the support structure 19C, the user can easily perform the pulling operation of the adjustment belt 16b by inserting their fingers into the space S4 between the annular member 93 and the adjustment belt 16b, grasping the annular member 93, and pulling it.

[0063] (Fourth variation) As shown in Figure 7, the fourth modified child seat 1D differs from child seat 1 in that it has a support structure 19D instead of a support structure 19. The support structure 19D has a fixing part 94. The fixing part 94 is configured to be grasped by the user. The fixing part 94 is attached to the adjustment belt 16b so as to be switchable between a free state SA in which it can move relative to the adjustment belt 16b and a fixed state SB in which it is fixed to the adjustment belt 16b. As an example, the fixing part 94 has a first member 941, a second member 942, and a shaft part 943. The first member 941 and the second member 942 are plate-shaped members that intersect each other. A hole (not shown) is provided in the portion where the first member 941 and the second member 942 intersect, and the shaft part 943 is inserted through the hole (not shown). The first member 941 and the second member 942 are rotatable via the shaft part 943. The user can switch between the free state SA and the fixed state SB of the fixing part 94 by rotating the first member 941 and the second member 942. When the adjustment belt 16b is in the free state SA, the user can switch the fixing part 94 to the fixed state SB by gripping the first member 941 and the second member 942 so that they are parallel to each other.

[0064] The first member 941 has a base end portion 941a located behind the shaft portion 943 and a tip portion 941b located on the opposite side of the base end portion 941a. The second member 942 has a base end portion 942a located behind the shaft portion 943 and a tip portion 942b located on the opposite side of the base end portion 942a. The fixing portion 94 is configured to be grasped by the user, specifically the base ends 941a and 942a being the parts grasped by the user.

[0065] The fixing portion 94 is attached to the belt member 16. More specifically, the adjustment belt 16b of the belt member 16 can be inserted through the tip portions 941b and 942b. In this embodiment, the adjustment belt 16b extending from the locking mechanism 17 is inserted from the tip side to the base end side of the tip portion 942b, extends from the base end side of the tip portion 942b to the base end side of the tip portion 941b, is inserted from the base end side to the tip side of the tip portion 941b, and extends from the tip portion 942b toward the storage mechanism 18. The first member 941 has a projection 941c on its tip portion 941b that protrudes in a direction intersecting the direction in which the adjustment belt 16b extends. The second member 942 has a recess 942c on its tip portion 942b into which the projection 941c is housed.

[0066] When the base end 941a is separated from the base end 942a, the adjustment belt 16b is in a free state SA, which allows it to move relative to the fixing part 94. When the first member 941 and the second member 942 are rotated from the free state SA so that the base end 941a is in close contact with the base end 942a, the projection 941c fits into the recess 942c. At this time, the projection 941c bites into the portion of the adjustment belt 16b that is inserted through the tip end 942b, so the adjustment belt 16b is in a fixed state SB, which fixes it to the fixing part 94. In this way, the fixing part 94 is attached to the adjustment belt 16b so that it can switch between the free state SA and the fixed state SB. The fixing part 94 is not fixed to the locking mechanism 17 and the storage mechanism 18, but is attached only to the adjustment belt 16b. Therefore, the user can pull the adjustment belt 16b by pulling the fixing part 94 (for example, the base end 941a and base end 942a) after fixing the fixing part 94 to the fixed state SB.

[0067] With the child seat 1D equipped with the support structure 19D, the user can grasp the fixing part 94 and pull the fixing part 94 while setting the fixing part 94 to the fixed state SB. This prevents the fixing part 94 from slipping against the adjustment belt 16b, allowing the user to easily pull the adjustment belt 16b in direction D2 to increase the tightening of the belt member 16. This effectively improves the operability of the pulling operation.

[0068] (Fifth variation) As shown in Figure 8, the fifth modified child seat 1E differs from child seat 1 in that it has a support structure 19E instead of a support structure 19. The support structure 19E has a fixing part 95 that has the same function as the fixing part 94. That is, the fixing part 95 is configured to be grasped by the user. The fixing part 95 is attached to the adjustment belt 16b so that it can switch between a free state SC in which it is relatively movable relative to the adjustment belt 16b and a fixed state SD in which it is fixed to the adjustment belt 16b. For example, the fixing part 95 has a main body 951, a button 952, and a sliding part 953. The user can switch between the free state SC and the fixed state SD of the fixing part 95 by operating the button 952 attached to the main body 951. When the adjustment belt 16b is in the free state SC in which movement is permitted, the user can switch the fixing part 95 to the fixed state SB by pressing the button 952.

[0069] The main body portion 951 has a D-shape. The fixing portion 95 is attached to the belt member 16. More specifically, the main body portion 951 has a belt insertion hole 951a, through which the adjustment belt 16b is inserted. The belt insertion hole 951a is rectangular in shape, and the length of the belt insertion hole 951a in the thickness direction of the adjustment belt 16b is longer than the thickness of the adjustment belt 16b. The fixing portion 95 is configured to be grasped by the user, and specifically, the portion of the main body portion 951 other than the portion in which the belt insertion hole 951a is provided is the portion that is grasped by the user.

[0070] Button 952 is aligned with the belt insertion hole 951a in the thickness direction of the adjustment belt 16b. The slide portion 953 is positioned on one side of the belt insertion hole 951a in the thickness direction and is configured to pop out to the other side of the belt insertion hole 951a. Button 952 is configured to be able to be pushed in a direction perpendicular to the upper surface 951b of the main body portion 951. Button 952 is biased by a spring member or the like (not shown) so that it is not pressed in in its natural state. When button 952 is not pressed in, the slide portion 953 does not pop out, and the adjustment belt 16b is in a free state SC in which movement is permitted. On the other hand, when button 952 is pressed in, the slide portion 953 pops out, causing the adjustment belt 16b to be sandwiched between the slide portion 953 and the edge of the belt insertion hole 951a, and the adjustment belt 16b is fixed to the fixing portion 95 SD. The fixing part 95, like the fixing part 94 (see Figure 7), is not fixed to the locking mechanism 17 and the storage mechanism 18, but is attached only to the adjustment belt 16b. Therefore, the user can pull the adjustment belt 16b by pulling the fixing part 95 (for example, the main body part 951) after fixing the fixing part 95 to the fixed state SD.

[0071] In the child seat 1E, as with the child seat 1D, the user can grasp the fixing part 95 and pull it while setting the fixing part 95 to the fixed state SD. This prevents the fixing part 95 from slipping against the adjustment belt 16b, allowing the user to easily pull the adjustment belt 16b in direction D2 to increase the tightening of the belt member 16. This effectively improves the operability of the pulling operation.

[0072] (Sixth variation) As shown in Figures 9(a) to 9(c), the sixth modified child seat 1F differs from child seat 1 in that it has a support structure 19F instead of a support structure 19. The support structure 19F has an operating mechanism 96. The operating mechanism 96 is configured to fix the adjustment belt 16b in a first position (position P1) and to pull the adjustment belt 16b in direction D2 at a second position (position P2) which is closer to the locking mechanism 17 than position P1. As an example, the operating mechanism 96 has a lever 961, a base 962, and a shaft portion 963. The lever 961 is rotatably supported on the base 962 via the shaft portion 963. The user can pull in the adjustment belt 16b by rotating the lever 961.

[0073] The base 962 is fixed to the rear wall 22. The base 962 has a groove 962a that penetrates the base 962 in the left-right direction. The groove 962a extends so that it moves closer to the storage mechanism 18 as it moves away from the rear wall 22. The groove 962a is curved when viewed from the left-right direction. The shaft 963 extends in the left-right direction and is inserted into the groove 962a. The shaft 963 is movable within the groove 962a in the direction in which the groove 962a extends. The shaft 963 is connected to the lever 961.

[0074] The lever 961 is rotatable around the shaft 963. The lever 961 extends linearly when viewed from the left and right directions and has a first end 961a and a second end 961b located on the opposite side from the first end 961a. The shaft 963 is connected at a distance from the first end 961a and the second end 961b. The distance from the first end 961a to the shaft 963 is longer than the distance from the second end 961b to the shaft 963. The first end 961a and the second end 961b are rod-shaped portions that extend in the left and right directions.

[0075] An adjustment belt 16b is inserted through the lever 961. More specifically, the lever 961 is formed in a rectangular frame shape by a first end 961a, a second end 961b, a rod-shaped portion (shown in Figure 9) connecting the left end of the first end 961a and the left end of the second end 961b, and a rod-shaped portion (hidden in Figure 9) connecting the right end of the first end 961a and the right end of the second end 961b. The adjustment belt 16b is inserted through this rectangular frame of the lever 961. The first end 961a is located inside (front of) the adjustment belt 16b, and the second end 961b is located outside (rear of) the adjustment belt 16b.

[0076] Figure 9(a) shows the natural state in which no force is applied to the lever 961 by the user. As shown in Figure 9(a), in the natural state, the first end portion 961a is in contact with the rear wall portion 22.

[0077] From the state shown in Figure 9(a), when the user pulls the lever 961 (an action that rotates the lever 961 clockwise as shown in Figure 9 so that the first end 961a moves backward), as shown in Figure 9(b), the lever 961 rotates around the shaft 963, and the second end 961b is pressed against the rear wall 22 of the back portion 12 while wrapping around the adjustment belt 16b. As a result, the adjustment belt 16b is fixed to the rear wall 22 at position P1 (first position). In this example, position P1 is the position where the adjustment belt 16b is sandwiched between the second end 961b and the rear wall 22. When the user pulls the lever 961 further, the lever 961 rotates together with the shaft 963, with the second end 961b at position P1 as the pivot point. Then, as shown in Figure 9(c), at position P2 (second position) where the first end 961a contacts the adjustment belt 16b, the adjustment belt 16b is pulled in direction D2. That is, the operating mechanism 96 is configured to fix the adjustment belt 16b at position P1, while simultaneously being able to pull the adjustment belt 16b in direction D2 at position P2, which is closer to the locking mechanism 17 than position P1. As a result, the length of the portion of the adjustment belt 16b located between the locking mechanism 17 and the operating mechanism 96 becomes longer. When the user releases the lever 961 from the state shown in Figure 9(c), the lever 961 moves in the opposite direction to the operation described above, and the adjustment belt 16b is released from the rear wall portion 22. The slack in the adjustment belt 16b caused by the lengthening of the portion of the adjustment belt 16b located between the locking mechanism 17 and the operating mechanism 96 is then eliminated by the storage mechanism 18.

[0078] As explained above, in the child seat 1F, the adjustment belt 16b can be moved in direction D2 by pulling the lever 961. Then, by releasing the lever 961, the slack portion of the adjustment belt 16b between the locking mechanism 17 and the storage mechanism 18 can be pulled into the storage mechanism 18. Therefore, the user can efficiently shorten the length of the shoulder belt 16a exposed in front of the backrest 12 simply by repeatedly pulling and releasing the lever 961.

[0079] With the child seat 1F equipped with the support structure 19F, the user can easily pull the adjustment belt 16b in direction D2 to increase the tightening of the belt member 16 by operating the operating mechanism 96. This makes the operability of the pulling operation more effective.

[0080] (Other variations) While embodiments and some modifications of this disclosure have been described above, this disclosure is not limited to the configurations shown in the embodiments and each modification. The materials and shapes of each configuration are not limited to the specific materials and shapes described above, but a variety of other materials and shapes can be used. Furthermore, some of the configurations included in the embodiments and each modification may be omitted or modified as appropriate, or can be combined in any way.

[0081] Child seat 1 may have one of the locking mechanisms 17A, 17B, or 17C instead of locking mechanism 17. Figure 10(a) is a schematic diagram showing locking mechanism 17A. Locking mechanism 17A is manually operated. The left side of Figure 10(a) shows the locked state of locking mechanism 17A, and the right side of Figure 10(a) shows the unlocked state of locking mechanism 17A. When locking mechanism 17A is in the locked state, locking mechanism 17A restricts the movement of the adjustment belt 16b in both directions D1 and D2. Locking mechanism 17A has a non-movable part 73, a first movable part 74, and a second movable part 75. The first movable part 74 and the second movable part 75 are rotatably connected to the non-movable part 73. The user can switch between the locked and unlocked states of the locking mechanism 17A by rotating the first movable part 74 and the second movable part 75 relative to the non-movable part 73.

[0082] The immovable portion 73 is fixed, for example, to the rear wall portion 22 of the back portion 12. The immovable portion 73 is a flat plate that extends in a straight line when viewed from above. The first movable portion 74 is L-shaped when viewed from above and includes a portion 74a parallel to the immovable portion 73 and a portion 74b perpendicular to the immovable portion 73, with one end of portion 74a connected to one end of the immovable portion 73. Portion 74a faces the immovable portion 73. Portion 74a has a plurality of projections 74c that protrude toward the immovable portion 73. The projections 74c are spaced apart from the immovable portion 73. Portion 74b is rotatable relative to the immovable portion 73.

[0083] The second movable part 75 is the part that holds down the first movable part 74. The second movable part 75 has a part 75a that is connected to the non-movable part 73 and a part 75b that holds down part 74a. Part 75a is connected to the other end of the non-movable part 73 opposite to the one end to which part 74b is connected. Part 75a extends parallel to part 74b. Part 75a is rotatable relative to the non-movable part 73.

[0084] Section 75b extends in the lateral direction toward the side where section 74a is located. Section 75b is connected to the other end of section 75a opposite to the end connected to the non-movable section 73. The lateral length of section 75b is shorter than the length of section 74a, and the end of section 74a is hooked onto section 75b. The end of section 75b is inclined in the front-rear and lateral directions, and the lateral length of section 75b increases as it moves away from section 74a.

[0085] When the locking mechanism 17A is in the locked state, part 74a of the first movable part 74 and the non-movable part 73 face each other, and the adjustment belt 16b is positioned between part 74a and the non-movable part 73. The projection 74c of part 74a bites into the adjustment belt 16b, so the movement of the adjustment belt 16b is restricted. Part 75b holds down part 74a, so the restriction on the movement of the adjustment belt 16b by part 74a is maintained. On the other hand, rotating part 75a allows part 75b to be separated from part 74a. When part 75b is separated from part 74a, the first movable part 74 can be rotated, and part 74a can be separated from the adjustment belt 16b. This eliminates the biting of the projection 74c into the adjustment belt 16b, so the movement of the adjustment belt 16b is permitted. Therefore, the locking mechanism 17A is in the unlocked state.

[0086] Figure 10(b) is a schematic diagram showing the locking mechanism 17B. The locking mechanism 17B is semi-automatic. The left side of Figure 10(b) shows the locked state of the locking mechanism 17B, and the right side of Figure 10(b) shows the unlocked state of the locking mechanism 17B. When the locking mechanism 17B is in the locked state, it restricts the movement of the adjustment belt 16b in both directions D1 and D2. The locking mechanism 17B has a first member 76 and a second member 77. When the locking mechanism 17B is in the locked state, the user can unlock the locking mechanism 17B by pushing the second member 77 into the first member 76.

[0087] The first member 76 is a rectangular member. The first member 76 is provided with a rectangular first belt insertion hole 76a. The first member 76 is provided with a recess (not shown) that is open toward the rear. The second member 77 is inserted into this recess. The second member 77 has a main body portion 771 and a pair of legs 772. The main body portion 771 is a rectangular portion. The main body portion 771 is provided with a rectangular second belt insertion hole 771a. The second belt insertion hole 771a has the same shape as the first belt insertion hole 76a. The pair of legs 772 are connected to the ends of the main body portion 771. The pair of legs 772 extend so that they move closer to each other as they move away from the main body portion 771. The pair of legs 772 as a whole are curved so that they move away from the main body portion 771. The pair of legs 772 are in contact with the bottom 76b of the first member 76, and the second member 77 is biased to protrude from the first member 76.

[0088] When the locking mechanism 17B is locked, the second member 77 is biased by the pair of legs 772, so that the rear end 76c defining the first belt insertion hole 76a and the front end 771b defining the second belt insertion hole 771a pinch the adjustment belt 16b. Therefore, the movement of the adjustment belt 16b is restricted. Next, when the second member 77 is pushed toward the bottom 76b of the first member 76, the area in which the first belt insertion hole 76a and the second belt insertion hole 771a overlap increases. As a result, the pinching of the adjustment belt 16b by the rear end 76c and the front end 771b is relieved, and the adjustment belt 16b becomes movable. That is, the locking mechanism 17B becomes unlocked. Then, when the push of the first member 76 is released, the first member 76 moves so as to pop out from the second member 77, and the locking mechanism 17B becomes locked again. In other words, the user can switch the lock mechanism 17B to the locked state simply by releasing the unlocked lock mechanism 17B.

[0089] Figure 10(c) is a schematic diagram showing the locking mechanism 17C. The left side of Figure 10(c) shows the locked state of the locking mechanism 17C, and the right side of Figure 10(c) shows the unlocked state of the locking mechanism 17C. When the locking mechanism 17C is in the locked state, it restricts the movement of the adjustment belt 16b in both directions D1 and D2. The locking mechanism 17C has a restricting member 78 and a support shaft 79. The support shaft 79 is connected to a bracket (not shown) and extends in the left-right direction. The restricting member 78 is rotatably supported by the support shaft 79. The user can switch between the locked and unlocked states of the locking mechanism 17C by operating the restricting member 78.

[0090] The restricting member 78 has a substantially cylindrical body 781, a claw portion 782 provided on the circumferential surface of the body 781, and a lever 783 operated by the user. The restricting member 78 has a fixing mechanism (not shown) that fixes the rotation of the restricting member 78 when the claw portion 782 is facing the rear wall portion 22. As a result, when the claw portion 782 is facing the rear wall portion 22, the claw portion 782 is fixed in a state where it is bitten into the adjustment belt 16b. That is, the locking mechanism 17C is in a locked state. The lever 783 is connected to the body 781. By rotating the restricting member 78 in direction D4 (i.e., counterclockwise in Figure 10(c)) with a force stronger than the force applied by the fixing mechanism via the lever 783, the fixing by the fixing mechanism is released. Then, the claw portion 782 moves away from the adjustment belt 16b, and the locking mechanism 17C is in an unlocked state.

[0091] In the locking mechanism 17C, the fixing of the restricting member 78 by the fixing mechanism can also be released by pulling the adjustment belt 16b in direction D2 with a certain amount of force. Therefore, when the locking mechanism 17C is locked, the user can unlock the locking mechanism 17C by pulling the adjustment belt 16b in direction D2 with a certain amount of force without operating the lever 783. In other words, the locking mechanism 17C cannot maintain the restriction of the movement of the adjustment belt 16b in direction D1 when it allows the adjustment belt 16b to move in direction D2. When the locking mechanism 17C is unlocked, the user can operate the lever 783 in the opposite direction to direction D4 (i.e., clockwise in Figure 10(c)) to engage the claw portion 782 with the adjustment belt 16b, thereby returning the locking mechanism 17C to the locked state.

[0092] In the above-described embodiment and modification of the child seat, the locking mechanism 17 and the storage mechanism 18 were located on the backrest 12. However, the storage mechanism 18 may be located below the seat 11 (below the upper surface 11a). In this case, the support structure 19 may be located below the seat 11, similar to the storage mechanism 18. When the storage mechanism 18 and the support structure 19 are located below the seat 11 as described above, the locking mechanism 17 may also be located below the seat 11. The above modifications are also applicable when modifications of the locking mechanism 17 (e.g., locking mechanisms 17A, 17B, 17C) and modifications of the support structure 19 (e.g., support structures 19A, 19B, 19C, 19D, 19E, 19F) are used. [Explanation of Symbols]

[0093] 1...Child seat (child seat for bicycle), 10...Seat body, 11...Seat part, 11b...Bottom surface, 12...Back part, 12b...Rear surface, 16...Belt member, 16a...Shoulder belt, 16e...First end, 16f...Second end, 17,17A,17B,17C...Locking mechanism, 18...Storage mechanism, 19,19A,19B,19C,19D,19E,19F...Support structure, 91,91B...Recess, 92...Convex part, 93...Annular member, 94,95...Fixing part, 96...Operating mechanism, 961a...First end (one end), 961b...Second end (other end), D1...Direction (first direction), D2...Direction (second direction), K...Child, P1...Position (first position), P2...Position (second position), S2...Space, S3...Space.

Claims

1. It has a seat body that can be attached to a bicycle, The aforementioned seat body is The seat is designed so that the child sits facing forward, The backrest extends upward from the rear end of the aforementioned seat, A belt member having a pair of shoulder belts that restrain both shoulders of a child seated on the aforementioned seat, A locking mechanism that restricts the movement of the belt member in a first direction through which the belt member is inserted and the length of the portion of the shoulder belt exposed to the front of the back increases, A storage mechanism that accommodates the second end of the belt member located above the seat portion, opposite to the first end, and pulls the belt member in the second direction opposite to the first direction for storage, A support structure is located between the locking mechanism and the storage mechanism, configured to allow access to the belt member from the outside of the seat body, and to assist the user in pulling the belt member in the second direction. A bicycle child seat equipped with [features / equipment].

2. The child seat for bicycles according to claim 1, wherein the distance from the support structure to the locking mechanism is shorter than the distance from the support structure to the storage mechanism.

3. The support structure has a recess provided on at least one of the rear surface of the backrest and the lower surface of the seat, The child seat for bicycles according to claim 1 or 2, wherein the belt member extends so as to pass over the recess.

4. The support structure has a protrusion provided on at least one of the rear surface of the backrest and the lower surface of the seat, The child seat for bicycles according to claim 1 or 2, wherein the belt member extends so as to pass over the protrusion.

5. The bicycle child seat according to claim 1 or 2, wherein the support structure is configured to be graspable by the user and has an annular member through which the belt member is inserted.

6. The child seat for a bicycle according to claim 1 or 2, wherein the support structure is configured to be graspable by the user and has a fixing portion attached to the belt member so as to be switchable between a free state in which it is movable relative to the belt member and a fixed state in which it is fixed to the belt member.

7. The child seat for bicycles according to claim 1 or 2, wherein the support structure has an operating mechanism configured to fix the belt member in a first position and to pull the belt member in a second direction at a second position closer to the locking mechanism than the first position.

8. The child bicycle seat according to claim 1 or 2, wherein the locking mechanism is configured to allow the movement of the belt member in the second direction while maintaining a state in which the movement of the belt member in the first direction is restricted.

Images