Covers and Bicycle Systems

Abstract

To provide a technology that covers almost the whole body of a person seated on a seat during used time, frees the person so as not to cover the body during unused time, and alleviates a load of changing work (changing operation) between the used time and unused time.SOLUTION: In a bicycle system, a cover 100 covers a person seated on a child seat 11 forming a rear seat of a bicycle, and the cover is provided with; a seat member 102 whose condition makes a transition between a first condition in which the person seated on the child seat 11 is covered from the head to as least the lower limb and a second condition in which the person seated on the child seat 11 is freed so as not to be covered; and a base 101 that keeps retaining the seat member 102 for the child seat 11 when the seat member 102 makes a transition between the first condition and second condition.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a rain cover for a seat mounted on a bicycle. [Background technology]

[0002] Conventionally, covers have been proposed for bicycles with seats for children that cover the child from head to lower legs in rainy weather to prevent the child from getting wet. For example, technologies described in Patent Documents 1 and 2 are known as such covers. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-032815 [Patent Document 2] Patent No. 6712814 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the technology described in Patent Document 1, even when the rain cover is not in use, the child's lower legs remain covered by the lower covering portion. Thus, even if only a portion of the body is covered by the rain cover, there is a problem in that the sense of openness is diminished when the rain cover is not needed, such as on sunny days. This means that visibility is obstructed and ventilation is hindered, making it difficult to feel the wind, which is uncomfortable. Furthermore, since the body is not completely exposed, there is also the problem of restricting movement when getting in and out of the car.

[0005] The technology described in Patent Document 2 allows the rain cover to be completely removed and the canopy to be folded and stored, so that the rider's body is not covered by the cover when the cover is not in use. However, a detachable cover requires the rider to attach and detach it from the seat each time the cover is in use or not, which can be cumbersome. Because the task of attaching and detaching the cover is a significant burden, riders often leave the cover on even when it is not needed. However, leaving the cover on can also cause the bicycle to tip over in strong winds, etc. On the other hand, leaving the cover off can also cause a significant burden when dealing with sudden rain, etc.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a technology that covers almost the entire body of a person sitting on the seat when in use, but opens up so as not to cover the person's body when not in use, and reduces the burden of switching between use and non-use (switching operation). [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the invention of claim 1 provides a cover for covering a person seated on a seat portion that forms a rear seat of a bicycle, the cover comprising: a seat member that transitions between a first state that covers the person from the head to at least the lower legs of the person seated on the seat portion and a second state that opens so as not to cover the person seated on the seat portion; a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state; and a frame that supports the seat member so as to form a living space for the person seated on the seat portion. The aggregate comprises a first member and a second member, the second member rotates around a first rotation axis as a central axis, the connection portion between the first member and the second member is connected in a state in which the first member and the second member rotate around a second rotation axis as a central axis, and the first rotation axis and the second rotation axis are different axes that are not coaxial with each other. .

[0008] The invention of claim 2 is a cover according to the invention of claim 1, In a plan view seen in the axial direction of the first rotation shaft, the first rotation shaft is disposed near one end of the second member, and the second rotation shaft is disposed near another end of the second member that is different from the one end. .

[0009] The invention of claim 3 is as follows: Claim 1 or 2 A cover according to the invention, The aggregate is held and operated by an operator to transition the seat member between the first state and the second state, and the seat member transitions to a third state in which it covers the bicycle rider's saddle by operating the aggregate while remaining held by the holding portion. .

[0010] The invention of claim 4 is the cover according to claim 1 or 2, wherein the seat member transitions to a third state in which the seat member covers the bicycle rider's saddle while remaining held by the holding portion. 。 The invention of claim 5 is a cover for covering a person seated on a seat portion that forms a rear seat of a bicycle, the cover comprising a seat member that transitions between a first state in which the seat member covers from the head to at least the lower legs of the person seated on the seat portion and a second state in which the seat member is open so as not to cover the person seated on the seat portion, a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state, and a frame that supports the seat member so as to form a living space for the person seated on the seat portion, the frame being held and operated by an operator to transition the seat member between the first state and the second state, and the seat member transitioning to a third state in which the seat member covers a rider's saddle of the bicycle while being held by the holding portion as the frame is operated. .

[0011] Also, Claim 6 The invention is 1 to 5 The cover according to any one of the above items further comprises a guide mechanism that guides the state transition of the sheet member.

[0012] Also, Claim 7 The invention is 1 to 6 The cover according to any one of the above, further comprising a drive mechanism that assists the sheet member in transitioning from the first state to the second state.

[0013] Also, Claim 8 The invention relates to a bicycle system including a bicycle, the bicycle system including a seat portion forming a rear seat of the bicycle, and a cover for covering a person seated on the seat portion, the cover including a seat member that transitions between a first state in which the seat portion covers from the head to at least the lower legs of the person seated on the seat portion and a second state in which the cover is open so as not to cover the person seated on the seat portion, a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state, and a frame that supports the seat member so as to form a living space for the person seated on the seat portion. The aggregate comprises a first member and a second member, the second member rotates around a first rotation axis as a central axis, the connection portion between the first member and the second member is connected in a state in which the first member and the second member rotate around a second rotation axis as a central axis, and the first rotation axis and the second rotation axis are different axes that are not coaxial with each other. The invention of claim 9 is a bicycle system including a bicycle, the bicycle comprising a seat portion forming a rear seat of the bicycle, and a cover for covering a person seated on the seat portion, the cover comprising a seat member that transitions between a first state in which the cover covers the person seated on the seat portion from the head to at least the lower legs, and a second state in which the cover is open so as not to cover the person seated on the seat portion, a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state, and a frame that supports the seat member to form a living space for the person seated on the seat portion, the frame being held and operated by an operator to transition the seat member between the first state and the second state, and the seat member transitioning to a third state in which the seat member covers a rider's saddle of the bicycle while still being held by the holding portion when the frame is operated. . [Effects of the Invention]

[0014] Claims 1 to 4 and 8The invention described in the above is a cover for covering a person seated on a seat that forms the rear seat of a bicycle, and is provided with a seat member that transitions between a first state in which the seat member covers from the head to at least the lower legs of the person seated on the seat member and a second state in which the seat member is open so as not to cover the person seated on the seat member, a holding portion that continues to hold the seat member against the seat member when the seat member transitions between the first state and the second state, and a frame that supports the seat member so as to form a living space for the person seated on the seat member. The aggregate comprises a first member and a second member, the second member rotates around a first rotation axis as a central axis, the connection portion between the first member and the second member is connected in a state in which the first member and the second member rotate around a second rotation axis as a central axis, and the first rotation axis and the second rotation axis are different axes that are not coaxial with each other. This allows a sense of openness to be achieved without having to remove the cover when not in use, and also makes it easy for people to get in and out. 。 The inventions of claims 5 and 9 are bicycle systems including a seat portion forming a rear seat of the bicycle, and a cover for covering a person seated on the seat portion, the cover comprising a seat member that transitions between a first state in which the seat portion covers the person from the head to at least the lower legs, and a second state in which the cover is open so as not to cover the person seated on the seat portion, a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first and second states, and a frame that supports the seat member to form a living space for the person seated on the seat portion, the frame being held and operated by an operator to transition the seat member between the first and second states, and the seat member transitioning to a third state in which it covers the rider's saddle while still held by the holding portion by operating the frame. This allows a sense of openness without having to remove the cover when not in use, and makes it easy for people to get on and off the bicycle. . [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a diagram showing a bicycle system according to a first embodiment. [Figure 2] FIG. 2 is a diagram showing a cover according to the first embodiment as viewed from left to right. [Figure 3] FIG. 2 is a diagram showing a state in which the cover in the first embodiment is viewed from above toward below. [Figure 4] FIG. 10 is a diagram showing a bicycle system according to a second embodiment. [Figure 5] FIG. 10 is a diagram showing a cover in the second embodiment. [Figure 6] FIG. 10 is a diagram showing a bicycle system according to a third embodiment. [Figure 7] FIG. 10 is a diagram showing a cover in the third embodiment. [Figure 8] FIG. 13 is a diagram showing a second operation frame in the third embodiment. [Figure 9] FIG. 11 is a diagram showing an auxiliary frame in the third embodiment. [Figure 10] FIG. 11 is a diagram showing a state in which the second operation frame is rotated upward together with the auxiliary frame in the third embodiment. [Figure 11]FIG. 10 is a diagram showing a bicycle system according to a fourth embodiment. [Figure 12] FIG. 11 is a view of a cover according to a fourth embodiment viewed from above downward. [Figure 13] FIG. 13 is a diagram showing a cover in the fifth embodiment. [Figure 14] FIG. 13 is a diagram schematically illustrating a cover according to a sixth embodiment. [Figure 15] FIG. 23 is a diagram showing a second operation frame in the sixth embodiment. [Figure 16] 10A and 10B are conceptual diagrams illustrating how a rotating portion rotates. DETAILED DESCRIPTION OF THE INVENTION

[0016] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, unless otherwise specified, in the following description, descriptions of directions and orientations correspond to the drawings for the convenience of the description, and do not limit, for example, the implementation, product, or scope of rights.

[0017] 1. First Embodiment 1 is a diagram showing a bicycle system 1 according to a first embodiment. The bicycle system 1 includes a bicycle 10, a child seat 11, and a cover 100.

[0018] In the following explanation, unless otherwise specified, it is assumed that the cover 100 is attached to the bicycle 10 (child seat 11), and the direction of travel of the bicycle 10 (however, this is the direction of travel when the handlebars are not turning) will be referred to as "forward," the opposite direction of "forward" as "backward," the right when facing forward as "right," and the left when facing forward as "left."

[0019] The bicycle 10 is equipped with a rider's saddle 12 on which a person (rider) sits. Note that details of the bicycle 10, such as brake levers, a headlight, and a stand used when parking the bicycle, are not shown in FIG. 1. The bicycle system 1 can appropriately use a regular bicycle as the bicycle 10. However, the bicycle 10 must be equipped with the necessary components (such as a carrier, not shown) to mount a child seat 11, which will be described later.

[0020] The child seat 11 is equipped with a headrest 13 to support the head, left and right side panels 14, a back panel 15 that forms the backrest, a bottom panel 16, and left and right footrests 17. Although details of the child seat 11 are omitted, the child seat 11 forms a seat portion on which a person (a passenger, in most cases a child) sits. The child seat 11 can adopt various configurations that are generally provided in commercially available products that can be mounted on bicycles. In other words, the child seat 11 forms the rear seat of the bicycle 10, and is not limited to the configuration shown in FIG. 1.

[0021] In the following description, a person seated in the seat (child seat 11 in this embodiment) may be referred to as a "passenger" to distinguish them from the driver. Also, a person operating the cover 100 will be referred to as an "operator" to distinguish them from the driver. This is because in this embodiment, it is almost never expected that the cover 100 will be operated while driving (the driver will also be the operator).

[0022] The cover 100 includes components whose shapes and positions change, as will be described in detail later. Therefore, the cover 100 transitions between various states depending on the changes in the shapes and positions of these components. In the following description, the states of the cover 100 are defined as a "use state," a "non-use state," and a "protection state."

[0023] The cover 100 shown in Fig. 1 covers the saddle 12 of the bicycle 10. As will be described in detail later, the state of the cover 100 shown in Fig. 1 shows the protective state of the cover 100. Furthermore, Fig. 1 shows the shape and position of each part of the cover 100 when it is in the protective state.

[0024] In the bicycle system 1 of the first embodiment, for example, by switching the cover 100 to the protective state while the bicycle 10 is parked, the saddle 12 can be made waterproof and dustproof. Therefore, for example, even if it rains while the bicycle 10 is parked in an uncovered place, the saddle 12 will not get wet, so the rider does not need to wipe the saddle 12 before riding the bicycle 10. This also helps prevent deterioration of the saddle 12.

[0025] Furthermore, in the protective state, the cover 100 is designed to almost completely cover the child seat 11. That is, in the protective state, the cover 100 can prevent not only the saddle 12 but also the seat portion from getting wet. In this way, the cover 100 in the first embodiment functions as a so-called bicycle cover, so there is no need to prepare a separate bicycle cover (a large, dedicated cover that can cover the child seat 11).

[0026] 1, the footrest 17 appears to be exposed in the protected state. However, this is only from the side, and as shown in FIG. 3, the cover 100 covers the upper part of the footrest 17. Therefore, unless it is raining sideways, the cover 100 can effectively prevent the footrest 17 from getting wet even in the protected state.

[0027] Figure 2 is a diagram showing the cover 100 in the first embodiment as viewed from left to right. In Figure 2, the cover 100 in use is shown by a solid line. In Figure 2, the approximate position of the child seat 11 is shown by a virtual line (two-dot chain line). Also, axes O, P, and Q shown in Figure 2 are all virtual axes that are approximately parallel to the horizontal direction and extend in the left-right direction of the bicycle 10.

[0028] As shown in FIG. 2, the cover 100 includes a base 101, a sheet member 102, an auxiliary frame 103, a first operation frame 104, and a second operation frame 105.

[0029] The base 101 in this embodiment is a plate-like member disposed approximately parallel to the back plate 15. However, the base 101 is not limited to a plate-like member, and may be, for example, a frame-like member disposed on the periphery of the back plate 15.

[0030] The base 101 functions as a base (holding portion) that defines and holds each component of the cover 100, and also functions as an attachment portion that attaches the cover 100 to the back panel 15 of the child car seat 11. As will be described in detail later, the base 101 can continue to hold the seat member 102 relative to the child car seat 11 when the state (including the shape and position) of the seat member 102 changes.

[0031] The base 101 is fixed to the back panel 15 (child car seat 11) by bolts (not shown). However, the method of fixing the base 101 to the child car seat 11 is not limited to using bolts. For example, a method in which fitting portions are formed on the base 101 and the back panel 15 and fitted together may be used. Alternatively, a belt, string, hook-and-loop fastener, magnet, or the like may be used as a method that does not require a dedicated structure for the child car seat 11. Such a method improves the versatility of the cover 100.

[0032] Furthermore, the base 101 attached to the child seat 11 does not have to be detachable from the child seat 11. As will be described in detail later, the cover 100 is designed so that it barely covers the body of the passenger when not in use. In other words, the cover 100 does not get in the way when not in use, and there is no need to take the trouble to remove the cover 100. Therefore, the base 101 may be structured so that it cannot be removed once attached to the child seat 11. Furthermore, the back panel 15 and the base 101 may be manufactured as an integrated structure.

[0033] The sheet member 102 is a thin, planar (cloth-like) member made of a material that can be folded and unfolded. The sheet member 102 is deformable, and therefore can transition into various shapes. The sheet member 102 in the first embodiment is made up of a sheet member 102a and a sheet member 102b.

[0034] The sheet member 102a of the sheet member 102 is made of a material that does not transmit light. Therefore, by covering the passenger's head with the sheet member 102a, sunlight and the like can be blocked. In other words, the cover 100 also functions as a sunshade.

[0035] The sheet member 102a in the first embodiment is also used as a part of a rain cover, for example, when it rains. Therefore, the sheet member 102a is preferably made of a material that is not only light-blocking but also water-repellent. Various materials have been proposed as such materials, and the material of the sheet member 102a can be appropriately selected from among them.

[0036] An end of the sheet member 102a is fixed to the base 101, and the position of this end is fixed and does not change. In other words, this end of the sheet member 102a is a fixed end. On the other hand, the other end of the sheet member 102a is fixed to the first operation frame 104. As will be described in detail later, the position of the first operation frame 104 changes as it rotates. Therefore, the other end of the sheet member 102a is a free end.

[0037] The auxiliary frame 103 is a frame having an approximately U-shape (a shape like an ellipse cut along its short axis) provided in the middle of the sheet member 102a, and is attached to the base 101 so as to be rotatable about the axis Q shown in Figure 2 as its central axis.

[0038] By disposing the auxiliary frame 103 at the position shown in Fig. 2, the seat member 102a is supported from below and is less likely to sag (it will not sink downward). Therefore, when the seat member 102a is unfolded, a living space for the passenger (more specifically, the passenger's head) is appropriately formed. In this way, the auxiliary frame 103 supports the seat member 102a so as to form a living space for the passenger. Note that the number of auxiliary frames 103 is not limited to one.

[0039] The first operation frame 104 is a substantially U-shaped frame. The free end of the sheet member 102a is attached to the upper side of the first operation frame 104 so as to be aligned with the first operation frame 104. The first operation frame 104 is attached to the base 101 so as to be rotatable about an axis Q shown in FIG. 2 as a central axis.

[0040] When the first operation frame 104 is rotated downward (counterclockwise in FIG. 2), the free end side of the sheet member 102a fixed to the first operation frame 104 is pulled downward. This operation of pulling out and spreading the sheet member 102a (the operation of rotating the first operation frame 104 downward) is hereinafter referred to as the "first opening operation."

[0041] When the first opening operation is continued and a predetermined amount of sheet member 102a is pulled out, auxiliary frame 103 fixed to sheet member 102a also starts to rotate downward in conjunction with sheet member 102a. As a result, sheet member 102a between auxiliary frame 103 and base 101 is also pulled downward in conjunction with auxiliary frame 103, and sheet member 102a finally assumes the shape shown in FIG. 2 (a shape in which sheet member 102a is maximally unfolded, hereinafter referred to as the "fully open shape" of sheet member 102a).

[0042] When the sheet member 102a is in the fully open state, the sheet member 102a is spread to the maximum extent and cannot be spread any further. As already explained, the end (fixed end) of the sheet member 102a is fixed to the base 101. Therefore, when the sheet member 102a reaches the fully open state, the first operation frame 104 cannot be rotated downward any further. The position of the first operation frame 104 at this time is referred to as the "lowest position."

[0043] The position of the fully open sheet member 102a is also determined by the position of the base 101 and the lowest position of the first operation frame 104. That is, in the cover 100, the state (shape and position) of the sheet member 102a is determined by the position of the first operation frame 104 at the lowest position.

[0044] Therefore, when the first operating frame 104 is placed in the lowest position, the seat member 102a transitions to a state in which it protrudes forward above the passenger's head (headrest 13), as shown in Fig. 2. Therefore, the seat member 102a is in a state in which it covers the passenger's head.

[0045] When the sheet member 102a covers the passenger's head, sunlight is blocked by the sheet member 102a, preventing direct sunlight from hitting the passenger (more specifically, the passenger's head). In addition, because the sheet member 102a is water-repellent, rain is blocked by the sheet member 102a when the sheet member 102a is in the fully open position. Therefore, the passenger (more specifically, the passenger's head) can be prevented from getting wet in the rain.

[0046] Even when the first operating frame 104 is positioned at the lowest position, the free end of the seat member 102a is spread by the first operating frame 104 to form a sufficient opening. In other words, the seat member 102a does not come into contact with the passenger even when it is covering the passenger's head. In this way, the first operating frame 104 also has the function of appropriately spreading and supporting the free end of the seat member 102a, and similar to the auxiliary frame 103, has the function of appropriately forming a living space for the passenger.

[0047] Conversely, when the first operation frame 104 is rotated upward (clockwise in FIG. 2), the sheet member 102a (free end portion) is turned up and folded in accordance with the movement of the first operation frame 104. This operation of folding the sheet member 102a (operation of rotating the first operation frame 104 upward) is hereinafter referred to as the "first closing operation."

[0048] After the first closing operation rotates the first operating frame 104 to the position of the auxiliary frame 103, the auxiliary frame 103 is rotated upward in conjunction with the first operating frame 104, and the sheet member 102a between the auxiliary frame 103 and the base 101 is folded.

[0049] Further, by continuing the first closing operation and rotating the first operating frame 104 and the auxiliary frame 103 to a position close to the base 101 (a position where the rotation stops, hereinafter referred to as the "uppermost position"), the sheet member 102a is almost completely folded. At this time, the sheet member 102a is folded into a substantially flat shape with a reduced area (hereinafter referred to as the "fully closed shape" of the sheet member 102a).

[0050] The position of the fully closed sheet member 102a is also determined by the position of the base 101 and the uppermost position of the first operation frame 104. That is, in the cover 100, the state (shape and position) of the sheet member 102a is determined by the position of the first operation frame 104 at the uppermost position.

[0051] Therefore, when the first operation frame 104 is positioned at the uppermost position, the seat member 102a is in a state in which the seat member 102a is along the base 101. In other words, the fully closed seat member 102a has a substantially flat shape and is positioned at a position in which the seat member 102a is along the base 101, so that no living space is formed between the seat member 102a and the child seat 11. Therefore, when the first operation frame 104 is positioned at the uppermost position, the seat member 102a is in an open state so as not to cover the passenger's head.

[0052] Furthermore, when the seat member 102a is in the fully closed shape, the seat member 102a, auxiliary frame 103, and first operation frame 104 are retracted to positions where they do not get in the way of a passenger getting in and out of the vehicle. At this time, the free end of the seat member 102a is positioned upward by the first operation frame 104 and is supported so as not to hang down near the passenger's head.

[0053] 2 mainly functions as a rain cover, and similar to sheet member 102a, is made of a highly water-repellent material. However, unlike sheet member 102a, sheet member 102b is made of a transparent material and has the property of transmitting light. Various materials have been proposed as such materials, and the material of sheet member 102b can be selected appropriately from among them.

[0054] The sheet member 102b has an end 102c and an end 102d. The end 102c is attached along the first operation frame 104. Therefore, the position of the end 102c changes depending on the position of the first operation frame 104. Furthermore, the end 102d is attached along the second operation frame 105. Therefore, the position of the end 102d changes depending on the position of the second operation frame 105. Furthermore, the shape of the sheet member 102b changes mainly depending on the relative positions of the first operation frame 104 and the second operation frame 105.

[0055] Fig. 3 is a diagram showing the cover 100 in the first embodiment as viewed from above downward. More specifically, Fig. 3 is a diagram viewed from above downward along the back panel 15. As is clear from Fig. 1, the up-down direction along the back panel 15 is not strictly parallel to the vertical direction. Therefore, Fig. 3 is not a diagram viewed vertically downward. Furthermore, Fig. 3 shows the approximate positions of the left and right footrests 17 with imaginary lines (two-dot chain lines).

[0056] Although not shown in Fig. 2, the base 101 includes holding members 101b and 101c as shown in Fig. 3. The structure and function of the holding members 101b and 101c will be described later.

[0057] The second operation frame 105 includes a front frame 106 and a rear frame 107. In the cover 100, the second operation frame 105 has the front frame 106 (first member) and the rear frame 107 (second member) connected in a pivotable state.

[0058] In Fig. 2, the positions of the second operation frame 105 when the cover 100 is in the protected state and when it is in the unused state are shown by dashed lines. In Fig. 2, the position in which the second operation frame 105 is shown extending forward is the position of the second operation frame 105 when it is in the protected state. On the other hand, in Fig. 2, the position in which the second operation frame 105 is shown extending upward is the position of the second operation frame 105 when it is in the unused state. Note that the second operation frame 105 shown by solid lines indicates the second operation frame 105 when the cover 100 is in the used state, as already explained.

[0059] Returning to FIG. 3, the front frame 106 is a frame bent into a substantially U-shape, and is connected to the rear frame 107 at both ends (both of which are located rearward in FIG. 3).

[0060] As described above, the end 102d of the seat member 102b is attached to the upper side of the front frame 106. The left-right width of the front frame 106 is designed to be wider than the arrangement width of the left and right footrests 17. Therefore, when the front frame 106 moves downward, the left and right footrests 17 (child seat 11) do not interfere with the front frame 106 due to the left-right size.

[0061] The rear frame 107 includes a left side section 107a, a right side section 107b, and a horizontal shaft section 107c. The rear frame 107 is configured to have a generally U-shaped frame as a whole by appropriately arranging the left side section 107a, the right side section 107b, and the horizontal shaft section 107c.

[0062] As described above, the end 102d of the seat member 102b is attached to the upper side of the rear frame 107, similar to the front frame 106. In the cover 100 of the first embodiment, the seat member 102b is attached to the left side portion 107a and the right side portion 107b of the rear frame 107, but is not attached to the horizontal shaft portion 107c. In other words, the rear side of the child seat 11 is not covered by the cover 100. However, the seat member 102b may also be arranged on the rear side so that the cover 100 covers the entire child seat 11.

[0063] The left side section 107a is located on the left side of the horizontal shaft section 107c. The left side section 107a is fixed to the horizontal shaft section 107c so as to extend in a direction perpendicular to the longitudinal direction of the horizontal shaft section 107c. The left side section 107a extends in a direction substantially parallel to the direction in which the right side section 107b extends. An end of the left side section 107a (the end not on the horizontal shaft section 107c side) is rotatably connected to an end of the front frame 106.

[0064] The right side section 107b is located on the right side of the horizontal shaft section 107c. The right side section 107b is fixed to the horizontal shaft section 107c so as to extend in a direction perpendicular to the longitudinal direction of the horizontal shaft section 107c. Furthermore, an end of the right side section 107b (the end not on the horizontal shaft section 107c side) is rotatably connected to an end of the front frame 106.

[0065] The horizontal shaft 107c passes through holding members 101b and 101c that protrude rearward from the base 101. The holding members 101b and 101c can be realized by, for example, L-shaped metal fittings. That is, one end of the L-shaped metal fitting is fixed to a plate-like portion of the base 101 with a bolt or the like, and the other end protrudes rearward from the base 101, and a through hole is formed in the other end into which the horizontal shaft 107c is inserted.

[0066] In this way, the holding members 101b, 101c and the horizontal shaft portion 107c form a bridge structure. As a result, the horizontal shaft portion 107c is attached to the base 101 so as to be disposed in a direction extending along the axis O. The horizontal shaft portion 107c is not fixed to the base 101 but is held rotatably about the axis O as a central axis. Therefore, the rear frame 107 can rotate about the axis O as a central axis. In this way, the rear frame 107 includes the horizontal shaft portion 107c, and the horizontal shaft portion 107c connects the left side section 107a and the right side section 107b, so that the left side section 107a and the right side section 107b rotate in conjunction with each other. As a result, when the front frame 106 is operated, the movement of the rear frame 107, which rotates in conjunction with the front frame 106, is stabilized.

[0067] The left-right width of the rear frame 107 (the distance between the left side section 107a and the right side section 107b) is determined by the longitudinal length of the horizontal shaft section 107c, and like the front frame 106, is designed to be wider than the arrangement width of the left and right footrests 17. Therefore, when the rear frame 107 rotates downward, the left and right footrests 17 (child seat 11) and the rear frame 107 do not interfere with each other.

[0068] The connecting portion between the front frame 106 and the rear frame 107 (left side portion 107a and right side portion 107b) is structured to be rotatable about an axis P. Hereinafter, the connecting portion between the front frame 106 and the rear frame 107 will be referred to as a bending portion 105a.

[0069] As mentioned above, in Fig. 2, the arrangement of the second operation frame 105 in the protected state (the state shown in Fig. 1) and the non-use state is shown by dashed lines, which are examples of states in which the front frame 106 and the rear frame 107 are extended at the bent portion 105a. Also, in Fig. 2, the arrangement of the second operation frame 105 in the use state is shown by solid lines, which is an example of a state in which the front frame 106 and the rear frame 107 are bent at the bent portion 105a.

[0070] In this way, the second operation frame 105 can bend and straighten like a human arm by rotating the bending portion 105a like an elbow joint. In this embodiment, the bending portion 105a is restricted so that it can only bend in the direction shown by the solid line in Fig. 2 (towards the valley, not towards the mountain).

[0071] When the cover 100 is in an unused state, an operator who wishes to use the cover 100 lightly presses down on the locking portion 101a to release the second operation frame 105 (front frame 106) from the base 101 and make it rotatable. Next, the operator holds the first operation frame 104, which is located at the uppermost position, and the second operation frame 105, which has become rotatable, and simultaneously rotates them downward (counterclockwise in FIG. 2) (this operation will be referred to as the "second opening operation" in the following description). In other words, the second opening operation corresponds to an operation that involves rotating the first operation frame 104 downward, and therefore includes the first opening operation already described.

[0072] While the first opening operation is progressing simultaneously with the second opening operation, the first operation frame 104 and the second operation frame 105 rotate in conjunction with each other. At this time, the relative position of the end 102c fixed to the first operation frame 104 and the end 102d fixed to the second operation frame 105 does not change much. Therefore, while the first opening operation is progressing simultaneously with the second opening operation, the sheet member 102a is unfolded, but the shape of the sheet member 102b does not change much (it only unfolds slightly on the sides). In other words, during this period, the change in shape of the sheet member 102 occurs mainly in the sheet member 102a. However, the position of the sheet member 102b also changes.

[0073] When the second opening operation is continued and the first operating frame 104 reaches the lowest position, the sheet member 102a reaches the fully open shape, thereby completing the simultaneous progress of the first opening operation during the second opening operation.

[0074] When the simultaneous first opening operation is completed, if the first operating frame 104 and the second operating frame 105 are fixed together (for example, using a string, rubber, hook, hook-and-loop fastener, etc.), only the sheet member 102a of the cover 100 will be fully open, and the cover will be in a state where it can be used as a sunshade. Note that when the cover 100 is to be used only as a sunshade, only the first opening operation for the first operating frame 104 may be performed, with the second operating frame 105 remaining fixed to the locking portion 101a.

[0075] When continuing the second opening operation after the simultaneous progress of the first opening operation in the second opening operation has ended, the operator releases the first operation frame 104 and continues to hold only the second operation frame 105. The operator then continues the second opening operation by further rotating the second operation frame 105 that he or she continues to hold downward. In subsequent second opening operations, the first operation frame 104 does not rotate and remains stationary in the lowest position.

[0076] As the second opening operation continues, the second operating frame 105 moves further downward, and the end 102d of the sheet member 102b also moves downward. However, because the first operating frame 104 is stationary, the end 102c of the sheet member 102b does not move. Therefore, the operator can unfold the sheet member 102b by continuing the second opening operation.

[0077] At this time, if the second operating frame 105 is operated while the bent portion 105a of the second operating frame 105 is stretched (for example, by operating the front frame 106 while gently pulling it forward), when the second operating frame 105 moves downward, the front frame 106 will be positioned forward of the saddle 12. This causes the seat member 102 to assume a shape that protrudes most forward (hereinafter referred to as the "forward-protruding open shape" of the seat member 102b).

[0078] FIG. 1 shows the cover 100 in a protective state, in which the sheet member 102a is fully open and the sheet member 102b is open and protrudes forward. As described above, the sheet member 102 (mainly the sheet member 102b) is in a state covering the saddle 12 (third state).

[0079] On the other hand, if the operator bends the bending portion 105a of the second operating frame 105 before the cover 100 (seat member 102 and front frame 106) interferes with the saddle 12, the position of the front frame 106 can be shifted further rearward compared to when the bending portion 105a is in the extended state. If the second operating frame 105 is rotated downward with the bending portion 105a bent, interference between the front frame 106 (seat member 102b) and the saddle 12 can be avoided. Therefore, the seat member 102b can be moved further downward compared to when it is in the protected state, for example.

[0080] If the second opening operation is continued while avoiding interference with the saddle 12, the seat member 102b is pulled further downward, and the seat member 102b finally assumes a shape in which the seat member 102b is spread out to its maximum downward position (hereinafter referred to as the "downwardly opened shape" of the seat member 102b) as shown by the solid line in Fig. 2. The position of the second operating frame 105 when the seat member 102b is in the "downwardly opened shape" is referred to as the "lowest position" of the second operating frame 105.

[0081] The solid lines in Fig. 2 show the cover 100 in use, with the seat member 102a in a fully open position and the seat member 102b in a downwardly open position, and as shown in Fig. 2, the end 102d of the seat member 102b reaches near the bottom end of the footrest 17. Therefore, when the cover 100 is in use, the seat member 102a covers the passenger's head, and the seat member 102b covers the passenger's lower legs while the passenger is resting on the footrest 17. The seat members 102a and 102b are continuous.

[0082] That is, when the cover 100 is in use, the sheet member 102 transitions to a state (first state) in which it covers the passenger from the head to at least the lower legs. Although the cover 100 has an open bottom even when in use, it is rare for rain to seep in upward from the bottom, and the cover 100 fully functions as a rain shield.

[0083] On the other hand, when transitioning the cover 100 to the unused state, the operator holds the second operation frame 105 (front frame 106) in his / her hand and performs an operation of pulling it upward (rotating it to the right in FIG. 2) (hereinafter referred to as the "second closing operation"). This causes the sheet member 102b to fold. When performing the second closing operation, after the second operation frame 105 reaches the position of the first operation frame 104, the operation is performed while simultaneously holding the first operation frame 104 and the second operation frame 105. In other words, the second closing operation is an operation that accompanies the first closing operation.

[0084] If the operator continues the second closing operation and fits the front frame 106 into the locking portion 101a, the cover 100 enters an unused state and the second closing operation is completed. The position of the second operating frame 105 when the front frame 106 is fitted into the locking portion 101a by completing the second closing operation is referred to as the "uppermost position" of the second operating frame 105. When the first operating frame 104 and the second operating frame 105 are in their respective uppermost positions, they are in a state where they almost overlap near the plate-shaped portion of the base 101. In other words, the sheet member 102b is in a shape that is almost completely folded (hereinafter referred to as the "fully closed shape" of the sheet member 102b). Furthermore, by completing the second closing operation, the first operating frame 104 (and auxiliary frame 103) is rotated to a position close to the base 101, and the first closing operation is also completed, and as described above, the sheet member 102a transitions to a "fully closed shape."

[0085] In this way, when the cover 100 is not in use, the seat members 102a and 102b are both fully closed and folded along the base 101. That is, the seat members 102 (seat members 102a and 102b) are disposed behind the headrest 13 and the side panels 14. Therefore, when the cover 100 is not in use, the state of the seat member 102 transitions to an open state (second state) so as not to cover the person (passenger) seated in the child seat 11. At this time, the cover 100 does not get in the way when the passenger gets in and out of the car.

[0086] As already explained, when you want to use it only as a sunshade on a sunny day, etc., you can leave the second operating frame 105 in the same position as when it is not in use (leaving the front frame 106 fitted into the engaging portion 101a), and pull out the first operating frame 104 (auxiliary frame 103) to fully open the sheet member 102a.

[0087] Furthermore, depending on the size of the sheet member 102b, when the cover 100 is used only as a sunshade, a part of the sheet member 102b may hang down below the first operation frame 104. In this case, the hanging part of the sheet member 102b can be turned up (either outward or inward) and fastened to the engaging part 101a or the first operation frame 104 with a belt, hook-and-loop fastener, or the like provided at a predetermined position.

[0088] Alternatively, a required number of frameworks equivalent to the auxiliary frames 103 may be provided in the sheet member 102b, which may be configured to rotate around the axis O as a central axis, and may be arranged near the base 101 when not in use. By providing such frameworks, when the sheet member 102a is pulled out, the folded sheet member 102b is prevented from being pulled out more than necessary.

[0089] As described above, the bicycle system 1 in the first embodiment comprises the bicycle 10, the child seat 11, and the cover 100. The cover 100 is a cover that covers a person (passenger) seated in the child seat 11 that forms the rear seat of the bicycle 10, and comprises a seat member 102 that transitions between a first state that covers the passenger from the head to at least the lower legs, and a second state that is open so as not to cover the passenger, and a base 101 that continues to hold the seat member 102 against the child seat 11 when the seat member 102 transitions between the first and second states. This provides a sense of openness without the need to remove the cover when not in use, and makes it easy for the passenger to get on and off.

[0090] The cover 100 further includes an auxiliary frame 103 that supports the seat members 102 (seat members 102a and 102b) to form a living space for the passengers, a first operating frame 104, and a second operating frame 105. This stabilizes the shape of the living space.

[0091] Furthermore, in the cover 100, the second operation frame 105 includes a front frame 106 and a rear frame 107, and the front frame 106 and the rear frame 107 are connected in a rotatable state. In this way, by rotating the bent portion 105a of the second operation frame 105, the second operation frame 105 can be made compact when the seat member 102 transitions between the first state and the second state. Therefore, even if there is an obstruction (for example, the saddle 12) in the movement path of the second operation frame 105, it can be moved while avoiding this obstruction.

[0092] Additionally, in the cover 100, the seat member 102 transitions to a third state in which it covers the rider's saddle 12 of the bicycle 10 while remaining held by the base 101. This allows the seat member 102 to be moved to the protective state while the bicycle is parked, making the saddle 12 waterproof and dustproof. Therefore, for example, the saddle 12 does not get wet even when the bicycle is parked in the rain, so the rider does not need to wipe the saddle 12 when getting on.

[0093] Furthermore, the cover 100 has a sheet member 102a that blocks sunlight, so it can function not only as a rain shield but also as a sunshade. That is, the cover 100 can also be used as a sunshade for a child car seat 11 that does not have a canopy.

[0094] In the above embodiment, for simplicity, the entire sheet member 102b is described as being made of a transparent material. However, for example, only a portion of the sheet member 102b (a portion positioned where there is a risk of obstructing the view) may be made of a transparent material, and a portion out of the passenger's line of sight (a portion positioned so as not to obstruct the view, for example, the portion around the end 102d) may be made of a material with high light-blocking properties, similar to the sheet member 102a. In other words, the sheet member 102b may have a portion that visually functions as a "window." In this way, by providing a window made of a transparent material in a portion of the sheet member 102b, it is possible to ensure the view of the passenger covered by the sheet member 102b while preventing rain from entering.

[0095] If a material with high light-blocking properties is used around the edge 102d of the seat member 102b, this area can also be used as a sunshade. As already explained, when the cover 100 is used only as a sunshade, the first opening operation can be performed on the first operation frame 104 while the second operation frame 105 remains fixed to the locking portion 101a. However, for example, if the first operation frame 104 remains fixed in the uppermost position and only the second operation frame 105 is pulled downward, the area around the passenger's head will be covered by the area around the edge 102d of the seat member 102b.

[0096] Furthermore, the peripheral portion of the end 102d of the sheet member 102b is positioned to cover the transparent portion (window portion) of the sheet member 102b when the cover 100 is moved to the unused state (the peripheral portion of the end 102d is "basically" positioned on the outermost side when the cover 100 is not in use). Therefore, as described above, by using a transparent material only in the portion that may obstruct the passenger's view, and using a highly light-blocking material in the peripheral portion of the end 102d, the transparent portion of the sheet member 102b can be shielded by the highly light-blocking material when the cover 100 is not in use. It may be necessary to use a material that is more vulnerable to sunlight than other portions for the transparent portion of the sheet member 102b. Even in such cases, by shading the portion when the cover 100 is not in use, deterioration of the sheet member 102b can be suppressed and the sheet member 102b can be protected.

[0097] In the above explanation, the peripheral portion of the end portion 102d is "basically" positioned at the outermost position in the unused state. Here, "basically" means that, exceptionally, the peripheral portion of the end portion 102d may not be positioned at the outermost position. For example, when moving the front frame 106 to the unused state, if the front frame 106 is held by hand and operated, the excess portion of the sheet member 102b may hang down below the first operating frame 104. In this case, the excess portion is a transparent portion because it is positioned in a position that is likely to obstruct the passenger's view in the used state. In such a case, we have already explained that the excess portion can be tucked outward to place the seat in the unused state. Considering this example, depending on the operator's operation method, the last tucked portion (the transparent portion) may be "exceptionally" positioned at the outermost position in the unused state.

[0098] There are, for example, two possible methods for storing the excess portion without tucking it up on the outside.

[0099] The first is to operate (tuck up) the excess portion so that it is rolled up inside the sheet member 102a, not on the outside. In this case, the light-blocking sheet member 102a is placed on the outside. That is, it is advisable to inform the operator how to operate the sheet member 102b and to provide a hook-and-loop fastener or the like on the inside of the sheet member 102a to fasten the excess portion.

[0100] The second is to provide a mechanism for pulling the excess portion between the peripheral portion of end portion 102d and sheet member 102a. For example, one possible structure is to fix one end of a string to a predetermined position on the outer surface of the excess portion (preferably the lowest position when hanging down), extend the string upward along the outer surface of sheet member 102a, and fasten the other end of the string to the periphery of locking portion 101a. When the excess portion is tucked outward, the string is positioned between sheet member 102a and sheet member 102b. After fixing front frame 106 to locking portion 101a, the operator can easily pull the excess portion of sheet member 102b between sheet member 102a and the peripheral portion of end portion 102d by pulling the other end of the string (the locking portion 101a side).

[0101] However, the present invention is not limited to such a method. For example, a frame equivalent to the auxiliary frame 103 may be provided between the end 102c and the end 102d of the sheet member 102b, and these frames may be raised upward together with the second operation frame 105 as appropriate, thereby preventing the excess portion from being generated.

[0102] 2. Second Embodiment The cover 100 in the first embodiment is provided with a sheet member 102a as a sunshade. However, some child car seats are provided with a sunshade (hood), and it is difficult to attach the cover 100 to such products. However, the cover in the present invention does not have to be provided with a sunshade.

[0103] 4 is a diagram showing a bicycle system 2 according to the second embodiment. The bicycle system 2 differs from the bicycle system 1 according to the first embodiment in that it has a child seat 21 instead of the child seat 11 and a cover 200 instead of the cover 100. In the following description, for the bicycle system 2 according to the second embodiment, components similar to those of the bicycle system 1 according to the first embodiment will be appropriately designated by the same reference numerals, and explanations thereof may be omitted.

[0104] The child seat 21 differs from the child seat 11 in that it has a back panel 25 instead of the back panel 15, and in that it has a canopy 28. In other words, the child seat 21 is configured as a product equipped with a sunshade.

[0105] The back panel 25 differs from the back panel 15 in that it has a portion that extends above the headrest 13. In this way, the child car seat 21 having the canopy 28 is configured so that the back panel 25 reaches a position higher than the headrest 13 (the position when the canopy 28 is folded down). The canopy 28 is attached to the back panel 25.

[0106] Although not shown in detail, the canopy 28 has components corresponding to the sheet member 102a, the auxiliary frame 103, and the first operation frame 104. However, no component corresponding to the sheet member 102b is attached to the first operation frame 104 in the second embodiment. Also, the canopy 28 differs from the cover 100 in that it is attached to the back panel 25 rather than to the base 101.

[0107] As explained above, the child car seat 21 in the second embodiment is configured as a general child car seat with a canopy, unlike the child car seat 11 in the first embodiment.

[0108] 5 is a diagram showing a cover 200 according to the second embodiment. The cover 200 differs from the cover 100 in that the cover 200 as a whole forms a rain protection portion. The cover 200 includes a sheet member 202 instead of the sheet member 102.

[0109] The end 102c of the sheet member 102b was attached to the first operation frame 104. However, in the second embodiment, the end 202c of the sheet member 202 is attached not to the canopy 28 (a member corresponding to the first operation frame 104) but to the base 101 above the canopy 28. On the other hand, the end 202d of the sheet member 202 is attached to the second operation frame 105, similar to the end 102d of the sheet member 102b. With this structure, the cover 200 (sheet member 202) changes state independently without being linked to the canopy 28.

[0110] Figure 5 shows the protective state of the cover 200, but by operating the second operating frame 105 (front frame 106) in the same manner as in the first embodiment, the cover 200 can also be placed in an "used state" and an "unused state."

[0111] Therefore, the cover 200 in the second embodiment can also achieve the same effects as the cover 100 in the first embodiment. The cover 200 can also be applied to a child car seat 21 that is provided with a canopy .

[0112] When using the cover 200 with the bicycle system 2, it is structurally possible to leave the canopy 28 in a closed position rather than in an open position. However, in that case, there will be no frame to support the seat member 202 around the passenger's head, which could result in interference between the seat member 202 and the passenger. To avoid this, the cover 200 may also have frame members equivalent to the auxiliary frame 103 provided in appropriate locations.

[0113] Furthermore, in the cover 200, a sheet member 102b can be used instead of the sheet member 202. In this case, the hook side of a hook-and-loop fastener is provided on the outer edge of the end 102c of the sheet member 102b, while the pile side of the hook-and-loop fastener is fixed to the inside of the lowest frame of the canopy 28 (the frame corresponding to the first operating frame 104) with double-sided tape or the like. The hook side and the pile side of the hook-and-loop fastener may then be attached to each other to fix the end 102c to the inside of the frame. In other words, the end 102c of the sheet member 102b may be attached to the inside of the canopy 28 (child seat 21). With this configuration, a child seat with a canopy can also be used as the child seat 21, and the cover 200 according to the present invention can be applied.

[0114] <3. Third Embodiment> In the above embodiment, an example has been described in which the second operating frame 105 (frame) forms the bent portion 105a, and the front frame 106 rotates relative to the rear frame 107. This makes it possible to prevent the front frame 106 and the seat members 102b, 202 from interfering with the saddle 12, etc., when transitioning from a non-use state to a use state, for example. However, if the bicycle 10, child seats 11, 21, and other components are not positioned so as to interfere with the frame, such a bent portion need not be provided.

[0115] Fig. 6 is a diagram showing a bicycle system 3 according to a third embodiment. Fig. 6 shows the cover 300 in use. In Fig. 6, the structure corresponding to the locking portion 101a is omitted.

[0116] Bicycle system 3 differs from bicycle system 1 in the first embodiment in that it has cover 300 instead of cover 100. In the following description, for bicycle system 3 in the third embodiment, components similar to those in bicycle system 1 in the first embodiment will be appropriately designated by the same reference numerals, and descriptions thereof may be omitted.

[0117] FIG. 7 is a diagram showing a cover 300 according to the third embodiment together with a child car seat 11. As shown in FIG.

[0118] The cover 300 includes a base 301 , a sheet member 302 , an auxiliary frame 303 , a first operation frame 304 , a second operation frame 305 , three auxiliary frames 309 , and a guide mechanism 310 .

[0119] The base 301 in this embodiment is a plate-like member disposed approximately parallel to the back plate 15, similar to the base 101 in the first embodiment. The base 301 functions as a base (holding portion) that defines and holds each component of the cover 300, and also functions as an attachment portion that attaches the cover 300 to the back plate 15 of the child car seat 11. Similar to the base 101, the base 301 is fixed to the back plate 15 (child car seat 11) by bolts (not shown).

[0120] 7, a locking portion 101a, an upper fixing portion 301a, and a lower fixing portion 301b are fixed to a base portion 301 in the third embodiment. The functions of the upper fixing portion 301a and the lower fixing portion 301b will be described later. Note that the base portion 301 differs from the base portion 101 in that it does not include the holding members 101b and 101c.

[0121] Similar to the sheet member 102, the sheet member 302 is a thin, planar (cloth-like) member made of a material that can be folded and unfolded. The sheet member 302 is deformable, and therefore can transition into various shapes. The sheet member 302 in the third embodiment is made up of a sheet member 302a and a sheet member 302b.

[0122] The sheet member 302a of the sheet member 302 is made of a material that does not transmit light. Therefore, by covering the passenger's head with the sheet member 302a, sunlight and the like can be blocked. In other words, the cover 300 also functions as a sunshade.

[0123] Like the sheet member 102a, the sheet member 302a in the third embodiment is also used as part of a rain cover, for example, when it rains. Therefore, the sheet member 302a is preferably made of a material that is not only light-blocking but also water-repellent. Various materials have been proposed as such materials, and the material of the sheet member 302a can be appropriately selected from among them.

[0124] Because an end of the sheet member 302a is fixed to the base 301, the position of that end is fixed and does not change. In other words, that end of the sheet member 302a is a fixed end. On the other hand, the other end of the sheet member 302a is fixed to the first operation frame 304. As will be described in detail later, the position of the first operation frame 304 changes as it rotates. Therefore, the other end of the sheet member 302a is a free end.

[0125] The auxiliary frame 303 in the third embodiment is a member corresponding to the auxiliary frame 103 in the first embodiment. The auxiliary frame 303 is attached to the middle part of the sheet member 302a. The auxiliary frame 303 rotates relative to the base part 301 about an axis R as a central axis.

[0126] By disposing the auxiliary frame 303 at the position shown in Fig. 7, the seat member 302a is supported from below and is less likely to sag (it will not sink downward). Therefore, when the seat member 302a is unfolded, a living space for the passenger (more specifically, the passenger's head) is appropriately formed. In this way, the auxiliary frame 303 supports the seat member 302a so as to form a living space for the passenger. Note that the number of auxiliary frames 303 is not limited to one.

[0127] The first operation frame 304 is a member equivalent to the first operation frame 104 in the first embodiment. The first operation frame 304 is a substantially U-shaped frame. The free end of the sheet member 302a is attached to the upper side of the first operation frame 304 so as to be aligned with the first operation frame 304. The first operation frame 304 is attached to the base 301 so as to be rotatable about the axis R shown in FIG. 7 as the central axis.

[0128] In this way, the cover 300 has a configuration (sheet member 302a, auxiliary frame 303, and first operation frame 304) equivalent to a sunshade portion similar to that of the cover 100. A detailed description of these will be omitted, but the difference is that the sunshade portion of the cover 300 (first operation frame 304, etc.) has a larger shape that protrudes forward compared to the case of the cover 100.

[0129] When the first operation frame 304 is rotated downward (counterclockwise in FIG. 7), the free end side of the seat member 302a is pulled downward. In this way, in the cover 300, the first opening operation is performed by operating the first operation frame 304, and the first operation frame 304 is placed in the lowest position, causing the seat member 302a to transition to a fully open shape. Therefore, by placing the first operation frame 304 in the lowest position, the seat member 302a transitions to a state in which it covers the passenger's head.

[0130] Conversely, when the first operation frame 304 is rotated upward (clockwise in FIG. 7), the sheet member 302a (free end portion) is turned up and folded in accordance with the movement of the first operation frame 304. In this way, in the cover 300 as well, the first closing operation can be performed by operating the first operation frame 304, and the first operation frame 304 can be placed in the uppermost position, causing the sheet member 302a to transition to a fully closed shape. Therefore, by placing the first operation frame 304 in the uppermost position, the sheet member 302a transitions to an open state so as not to cover the passenger's head.

[0131] The sheet member 302b shown in FIG. 7 is the part that mainly functions as a rain cover, similar to the sheet member 102b in the first embodiment, and is made of a highly water-repellent, transparent material and has the property of transmitting light.

[0132] The sheet member 302b has an end 302c and an end 302d. The end 302c is attached along the first operation frame 304. Therefore, the position of the end 302c changes depending on the position of the first operation frame 304.

[0133] Moreover, the end portion 302d is attached along the second operation frame 305. Therefore, the position of the end portion 302d changes depending on the position of the second operation frame 305. Furthermore, the shape of the sheet member 302b changes mainly depending on the relative positions of the first operation frame 304 and the second operation frame 305.

[0134] 7, the second operation frame 305 does not have a structure equivalent to the bent portion 105a of the second operation frame 105 in the first embodiment. Therefore, the shape of the second operation frame 305 does not change when the cover 300 is installed.

[0135] Fig. 8 is a diagram showing the second operation frame 305 in the third embodiment. Fig. 8 is a diagram showing the second operation frame 305 viewed from above when the cover 300 is placed in the use state. Fig. 8 also shows the approximate position of the footrest 17 with a two-dot chain line.

[0136] The second operation frame 305 is a frame having a horizontal shaft portion 305a extending in the left-right direction, and a left side portion 305b and a right side portion 305c extending in the front-rear direction.

[0137] The horizontal shaft 305a connects the left side section 305b and the right side section 305c at the rear in Fig. 8. The left-right distance between the left side section 305b and the right side section 305c is determined by the longitudinal length of the horizontal shaft 305a, and as shown in Fig. 8, this distance is designed to be wider than the left-right arrangement width of the footrest 17. This prevents the second operating frame 305 from interfering with the left and right footrests 17 when the cover 300 is in use.

[0138] The horizontal shaft portion 305a is formed with ring portions 305d and 305e at the portions where it is connected to the left and right portions 305b and 305c, respectively.

[0139] A through hole is formed in each of ring portions 305d and 305e, and guide portion 313 of guide mechanism 310 is inserted into the through hole. The left guide portion 313 is inserted into ring portion 305d, and the right guide portion 313 is inserted into ring portion 305e. Furthermore, ring portions 305d and 305e are not fixed to each guide portion 313 and are able to slide, as will be described in detail below.

[0140] The left side section 305b is connected to the horizontal shaft section 305a by a ring section 305d. The left side section 305b is a frame section extending in the front-to-rear direction. The left side section 305b forms a corner at the front in FIG. 8, and a part of the corner is bent to the right.

[0141] The right side portion 305c is connected to the horizontal shaft portion 305a by a ring portion 305e. The right side portion 305c is a frame portion extending in the front-to-rear direction. The right side portion 305c forms a corner at the front in FIG. 8, and a part of the corner is bent to the left.

[0142] 8, the left side section 305b and the right side section 305c are not connected to each other, resulting in a missing section in the second operation frame 305. This causes the second operation frame 305 to form a roughly C-shape.

[0143] When the cover 300 is in use, the second operating frame 305 is positioned below a portion of the bicycle 10 (the rear wheel and rear wheel mudguard), as shown in Fig. 6. In other words, the cutout is provided to prevent the second operating frame 305 from interfering with the bicycle 10 when the second operating frame 305 is positioned at the lowest position.

[0144] In the cover 300, the end 302d of the seat member 302b is attached to the left side portion 305b and the right side portion 305c. Therefore, the seat member 302b is also placed in the missing portion. However, at the position of the missing portion, a slit (not shown) is made in the seat member 302b in the vertical direction to prevent interference between the bicycle 10 and the seat member 302b.

[0145] Fig. 9 is a diagram showing the auxiliary frame 309 in the third embodiment. Fig. 9 is a diagram showing the auxiliary frame 309 viewed from above when the cover 300 is placed in the use state. Fig. 9 also shows the approximate position of the footrest 17 with a two-dot chain line.

[0146] The auxiliary frame 309 is a frame member that has a horizontal shaft portion 309a extending in the left-right direction, and a left side portion 309b and a right side portion 309c extending in the front-rear direction, and these components form a substantially U-shape.

[0147] The horizontal shaft 309a connects the left side section 309b and the right side section 309c at the front in Fig. 9. The left-right distance between the left side section 309b and the right side section 309c is determined by the longitudinal length of the horizontal shaft 309a, and as shown in Fig. 9, this distance is designed to be wider than the left-right arrangement width of the footrest 17. This prevents the auxiliary frame 309 from interfering with the left or right footrest 17 when the cover 300 is in use.

[0148] A ring portion 309d is provided at the rear portion of the left side portion 309b (the end portion not fixed to the horizontal shaft portion 309a). Similarly, a ring portion 309e is formed at the rear portion of the right side portion 309c.

[0149] A through hole is formed in each of ring portions 309d and 309e, and guide portion 313 of guide mechanism 310 is inserted into the through hole. The left guide portion 313 is inserted into ring portion 309d, and the right guide portion 313 is inserted into ring portion 309e. Furthermore, ring portions 309d and 309e are not fixed to each guide portion 313 and are able to slide, as will be described in detail below.

[0150] A sheet member 302b, which will be described later, is fixed to horizontal shaft portion 309a, left side portion 309b, and right side portion 309c of auxiliary frame 309. On the other hand, sheet member 302b is not disposed between ring portion 309d and ring portion 309e.

[0151] Returning to Figure 7, guide mechanism 310 in this embodiment is a component having a structure in which round rod members are arranged in a predetermined shape. The components of guide mechanism 310 form upper horizontal shaft portion 311, lower horizontal shaft portion 312, and two guide portions 313. As will be described in detail later, these components are arranged like a rectangular (approximately square-shaped) enclosure surrounding the device on all four sides when viewed from the rear to the front.

[0152] The upper horizontal shaft portion 311 and the lower horizontal shaft portion 312 are both portions of the guide mechanism 310 that extend in the left-right direction. An upper fixed portion 301a is fixed to the upper horizontal shaft portion 311, and a lower fixed portion 301b is fixed to the lower horizontal shaft portion 312. With this structure, the guide mechanism 310 is fixed to and held by the base portion 301 by the upper fixed portion 301a and the lower fixed portion 301b.

[0153] Furthermore, guide portions 313 are provided at both ends of the upper horizontal shaft portion 311 and the lower horizontal shaft portion 312. That is, although not clearly shown in Fig. 7, one guide portion 313 is provided on each side.

[0154] The main body of guide portion 313 is formed as a round bar-shaped member extending in the vertical direction. Furthermore, as shown in Fig. 7, a curved portion 313a that curves rearward is formed at the top of guide portion 313. Furthermore, because guide portion 313 is a round bar-shaped member, its cross section (cross section in a plane perpendicular to the extension direction) is circular. Furthermore, guide portion 313 is formed with a substantially uniform thickness, and the size of the circle is substantially constant regardless of the location of guide portion 313.

[0155] As described above, the guide portion 313 is passed through the ring portions 305d, 305e of the second operation frame 305 and the ring portions 309d, 309e of the auxiliary frame 309. More specifically, the left guide portion 313 shown in FIG. 7 passes through the ring portions 305d, 309d, and the right guide portion 313 (not shown) passes through the ring portions 305e, 309e. None of the ring portions 305d, 305e, 309d, 309e are fixed to the guide portion 313. Therefore, the ring portions 305d, 305e, 309d, 309e all slide in the direction in which the guide portion 313 extends.

[0156] Because the main body portions of the left and right guide portions 313 are arranged to extend in the vertical direction, when the ring portions 305d, 305e, 309d, and 309e slide on the main body portions, the second operation frame 305 and the auxiliary frame 309 move in the vertical direction. Moreover, because the curved portions 313a of the left and right guide portions 313 are arranged to curve backward, when the ring portions 305d, 305e, 309d, and 309e slide on the curved portions 313a, the second operation frame 305 and the auxiliary frame 309 rotate.

[0157] Fig. 10 is a diagram showing a state in which the second operation frame 305 in the third embodiment has been rotated upward together with the auxiliary frame 309. Note that Fig. 10 does not show the locking portion 101a and the upper fixing portion 301a. Also, Fig. 10 does not show the position (uppermost position) when the second operation frame 305 is fitted into the locking portion 101a. More specifically, Fig. 10 shows a state in which the sheet members 302a and 302b have been slightly spread apart by rotating the first operation frame 304 and the second operation frame 305 slightly downward (counterclockwise in Fig. 10).

[0158] When second operation frame 305 and auxiliary frame 309 are moved upward from the position shown in Fig. 7 and ring portions 305d, 305e, 309d, and 309e are positioned at curved portion 313a of guide portion 313, second operation frame 305 and auxiliary frame 309 rotate to assume the position shown in Fig. 10. That is, left side portions 305b and 309b and right side portions 305c and 309c assume a position extending in the vertical direction.

[0159] 10 and fixed to the base 301 by the locking portion 101a, the second operation frame 305 is placed in the uppermost position (the position when the cover 300 is not in use). At this time, if the first operation frame 304 is also placed in the uppermost position, the second operation frame 305 will be aligned with the first operation frame 304.

[0160] When the first operation frame 304 and the second operation frame 305 are arranged alongside each other, the relative position between the first operation frame 304 and the second operation frame 305 is smallest, and the sheet member 302b is folded to the smallest size to assume a fully closed shape. Also, when the first operation frame 304 is arranged at the uppermost position, the sheet member 302a is folded between the base 301 and the first operation frame 304 to assume a fully closed shape.

[0161] Therefore, when the first operation frame 304 and the second operation frame 305 are placed in their uppermost positions, both the seat members 302a and 302b are fully closed, and the seat member 302 transitions to its most folded state. The state of the seat member 302 at this time is a state (second state) in which it is open so as not to cover the passenger. Thus, in the cover 300 of the third embodiment as well, the state in which the first operation frame 304 and the second operation frame 305 are placed in their uppermost positions is the unused state.

[0162] When transitioning the cover 300 from the unused state to the used state, the operator rotates the first operation frame 304 and the second operation frame 305 downward (counterclockwise in FIG. 10 ). This operation is the “second opening operation” for the cover 300. In the third embodiment as well, the second opening operation is accompanied by the first opening operation for the first operation frame 304. That is, in the third embodiment as well, when the second opening operation is started, the first opening operation proceeds simultaneously.

[0163] At this time, the first operation frame 304 (auxiliary frame 303) rotates around the axis R. Therefore, the sheet member 302a is gradually pulled out, and transitions from the fully closed shape to the fully open shape.

[0164] On the other hand, the second operation frame 305 rotates as the ring portions 305d and 305e slide along the curved portion 313a of the guide mechanism 310. That is, the second operation frame 305 rotates by being guided by the guide mechanism 310. However, because the first operation frame 304 also rotates at the same time, the relative positions of the first operation frame 304 and the second operation frame 305 do not change much, and the shape of the sheet member 302b does not change much.

[0165] When the second opening operation is continued and the first operation frame 304 is placed in the lowest position, the seat member 302a transitions to a fully open shape, and the first operation frame 304 enters a state where it cannot rotate downward any further.

[0166] When the second operating frame 305 is attached to the first operating frame 304, which is located at the lowest position, for example, by bundling them together (this can be achieved by fastening with, for example, string, rubber, hooks, hook-and-loop fasteners, etc.), only the highly light-blocking sheet member 302a of the cover 300 is fully open, so that the cover can be used as a sunshade.

[0167] When the first operating frame 304 is positioned at the lowest position by the second opening operation, the operator can continue the second opening operation by releasing the first operating frame 304 and moving the second operating frame 305 downward.

[0168] As described above, the second operation frame 305 moves while sliding on the guide portion 313, and therefore the movement direction of the second operation frame 305 is defined as the direction in which the guide portion 313 extends (downward). Therefore, even when moving the second operation frame 305 downward in the second opening operation, the operator can move the second operation frame 305 appropriately (for example, without interfering with other members) without being particularly conscious of the direction in which it is moved. Therefore, the burden on the operator when transitioning the state of the cover 300 is reduced.

[0169] When the second operation frame 305 is moved downward while the first operation frame 304 is stationary at the lowest position, the relative position between the first operation frame 304 and the second operation frame 305 increases, and the folded sheet member 302b is pulled out and unfolded. In this way, when the sheet member 302b is completely pulled out and reaches the fully open shape, the second operation frame 305 cannot move further downward. The position of the second operation frame 305 at this time is the lowest position of the second operation frame 305 (the position shown in Figures 6 and 7).

[0170] 7, for example, the second operating frame 305 in the lowest position is lowered to the position of the footrest 17. That is, the end 302d of the seat member 302b attached to the second operating frame 305 is also lowered to the position of the footrest 17. As a result, when the cover 300 is in use, the seat member 302 is in a state (first state) in which it covers from the head to at least the lower legs of the passenger.

[0171] Conversely, when transitioning the cover 300 from the use state to the non-use state, the operator holds the second operation frame 305 at the lowest position and starts an operation of moving it upward (second closing operation). When the second closing operation starts, the end 302d of the sheet member 302b attached to the second operation frame 305 turns up, and the sheet member 302b is folded.

[0172] In the second closing operation, even when the second operation frame 305 is moved upward, the second operation frame 305 is guided by the guide mechanism 310, so the operator can move the second operation frame 305 appropriately (for example, without interfering with other members) without being particularly conscious of the direction of movement, etc. Therefore, the burden on the operator when transitioning the state of the cover 300 is reduced.

[0173] In the second closing operation, while the second operation frame 305 is being moved upward, each time the position of the second operation frame 305 reaches the height position of the auxiliary frame 309, the auxiliary frame 309 is also moved upward while being held together with the second operation frame 305 so as to be bundled. As a result, the sheet member 302b is folded in an accordion-like shape. Then, when the second operation frame 305 is moved to the lowest position of the first operation frame 304, the sheet member 302b is in a fully closed shape.

[0174] Next, the operator rotates the first operation frame 304 upward (to the right in FIG. 7) while holding the second operation frame 305 (and the auxiliary frame 309). That is, the operator simultaneously performs the second closing operation and the first closing operation on the first operation frame 304. As a result, the fully closed sheet member 302b moves toward the base 301, and the sheet member 302a is folded.

[0175] When the first operation frame 304 and the second operation frame 305 are brought close to the base 301 and placed in the uppermost position, the sheet member 302a transitions to the fully closed shape, and the sheet member 302 transitions to the second state. That is, the cover 100 transitions to the unused state, and the second closing operation is completed.

[0176] As described above, even with the cover 300 that does not have a structure such as the bent portion 105a of the second operation frame 105 in the first embodiment, it is possible to obtain the same effects as the cover 100 in the first embodiment.

[0177] Furthermore, by providing the cover 300 with a guide mechanism 310 that guides the transition of the state of the sheet member 302, the operation when the operator transitions the state of the cover 300 becomes stable and the burden on the operator can be reduced.

[0178] Although the three auxiliary frames 309 in this embodiment have been described as members having the same shape, they do not have to be completely identical. Furthermore, the number of auxiliary frames 309 is not limited to three. The number may be determined appropriately depending on the shape and properties (e.g., strength, weight, etc.) of sheet member 302b, the size and position of the living space to be formed, etc.

[0179] Furthermore, when the first operation frame 304, which is located at the lowest position, and the second operation frame 305 are arranged side by side in the cover 300, and the second operation frame 305 is released, the second operation frame 305 falls downward due to the action of gravity without any special operation by the operator. As described above, the attitude and falling direction of the second operation frame 305 when it falls are determined by the guide portion 313 of the guide mechanism 310. Therefore, by providing the guide mechanism 310, the cover 300 can complete the second opening operation without any special operation by the operator.

[0180] 4. Fourth Embodiment In the first to third embodiments, the sheet members 102, 302 are divided into a portion (sheet member 102a, 302a) that is used as a sunshade and also serves as a rain cover, and a portion (sheet member 102b, 302b) that is used mainly as a rain cover. However, the manner in which the sheet members of the present invention are divided is not limited to the example of dividing into portions with different functions.

[0181] Fig. 11 is a diagram showing a bicycle system 4 according to the fourth embodiment, with the cover 400 in a protective state.

[0182] The bicycle system 4 of the fourth embodiment differs from the bicycle system 1 of the first embodiment in that it has a cover 400 instead of the cover 100. In the following description, for the bicycle system 4 of the fourth embodiment, the same components as those of the bicycle system 1 of the first embodiment will be appropriately designated by the same reference numerals, and the description thereof may be omitted.

[0183] As shown in FIG. 11, the cover 400 includes a sheet member 402 in place of the sheet member 102, and further includes a drive mechanism 421.

[0184] Fig. 12 is a view of cover 400 in the fourth embodiment viewed from above. In Fig. 12, sheet member 402a is indicated by a dashed line. Fig. 12 also shows cover 400 in use.

[0185] The cover 400 includes a base 401 instead of the base 101, and includes auxiliary frames 403 and 404 instead of the auxiliary frame 103 and the first operation frame 104. Also, a second operation frame 405 instead of the second operation frame 105.

[0186] Similar to base 101, base 401 is a plate-like member disposed behind back plate 15, but differs from base 101 in that a drive mechanism 421 (case 422) is fixed to the upper part. Also, unlike base 101, base 401 does not include locking portion 101a.

[0187] The sheet member 402 (FIG. 11) is a thin, planar (cloth-like) member made of a material that can be folded and unfolded. The sheet member 402 is deformable, so it can transition into various shapes. The sheet member 402 is also made of a highly water-repellent material.

[0188] The sheet member 402 includes a sheet member 402a that forms the ceiling and front of the living space when in use, a sheet member 402b disposed on the left side, and a sheet member 402c disposed on the right side. That is, the sheet member 402 in the fourth embodiment is mainly divided into three parts.

[0189] The sheet member 402a has a generally rectangular, flat surface. The central portion of the sheet member 402a (the portion positioned to block the passenger's view) is made of a transparent material with high light transmittance, while the front and rear portions are made of a material with high light blocking properties. The leading end of the sheet member 402a forms an end portion that extends linearly in the left-right direction and is attached along the horizontal shaft portion 406c. Meanwhile, the rear end of the sheet member 402a is attached inside the case portion 422 (not shown).

[0190] The sheet members 402b and 402c are made of a material with high light-blocking properties. When unfolded, the sheet members 402b and 402c form substantially vertical surfaces as side walls that define the living space. However, some or all of the sheet members 402b and 402c may be made of a transparent material, as appropriate.

[0191] One end of each of the sheet members 402b and 402c is fixed to the base 401. The other end of the sheet member 402b is attached along the left side portion 406a of the front frame 406 and the left side portion 107a of the rear frame 107. The other end of the sheet member 402c is attached along the left side portion 406b of the front frame 406 and the left side portion 107b of the rear frame 107.

[0192] Unlike the auxiliary frame 103, which has a curved shape, the auxiliary frame 403 is a straight rod-shaped frame. Like the auxiliary frame 103, the auxiliary frame 403 is attached to the base 401 in a state where it can rotate about axis Q as a central axis. A through-hole (not shown) is formed at an end of the auxiliary frame 403 (the end not on the axis Q side, hereinafter referred to as the "head-side end"), and a wire 430 is passed through the through-hole. Note that the head-side end of the auxiliary frame 403 is not fixed to the wire 430, and the head-side end of the auxiliary frame 403 is movable along the wire 430.

[0193] 12, the auxiliary frames 403 are provided independently on the left and right sides and are not connected to each other. The auxiliary frame 403 on the left side is attached to a predetermined position on the sheet member 402b. The auxiliary frame 403 on the right side is attached to a predetermined position on the sheet member 402c.

[0194] Unlike the curved first operation frame 104, the auxiliary frame 404 is a straight rod-shaped frame. Like the first operation frame 104, the auxiliary frame 404 is attached to the base 401 in a state where it can rotate about axis Q as a central axis. A through-hole (not shown) is formed in an end of the auxiliary frame 404 (the end not on the axis Q side, hereinafter referred to as the "head-side end"), and a wire 430 is passed through the through-hole. Note that the head-side end of the auxiliary frame 404 is not fixed to the wire 430, and the head-side end of the auxiliary frame 404 is movable along the wire 430.

[0195] 12, the auxiliary frames 404 are provided independently on the left and right sides and are not connected to each other. The auxiliary frame 404 on the left side is attached to a predetermined position on the sheet member 402b. The auxiliary frame 404 on the right side is attached to a predetermined position on the sheet member 402c.

[0196] With this configuration, the auxiliary frames 403 and 404 function similarly to the framework of a fan for the sheet members 402b and 402c in the cover 400. Note that the number of auxiliary frames 403 and 404 is not limited to the number shown here.

[0197] 12, the distance between the left and right auxiliary frames 403 is narrower than the width of the sheet member 402a. Similarly, the distance between the left and right auxiliary frames 404 is narrower than the width of the sheet member 402a. Therefore, the sheet member 402b is disposed to the right of the left edge of the sheet member 402a, and the sheet member 402c is disposed to the left of the right edge of the sheet member 402a.

[0198] As a result, sheet member 402a in use is arranged to overhang above and outward from sheet members 402b and 402c like a canopy, and therefore, in use, cover 400 can prevent rain from entering the living space.

[0199] The auxiliary frames 403 and 404 also have the function of abutting against the rear surface of the sheet member 402a in use from below and supporting the sheet member 402a from below.

[0200] The second operation frame 405 in the fourth embodiment includes a front frame 406 and a rear frame 107. That is, the second operation frame 405 differs from the second operation frame 105 in that the second operation frame 405 includes the front frame 406 instead of the front frame 106.

[0201] The front frame 406 includes a left side portion 406a, a right side portion 406b, and a horizontal shaft portion 406c.

[0202] An end of the left side section 406a is rotatably connected to a left side section 107a of the rear frame 107. An end of the right side section 406b is rotatably connected to a right side section 107b of the rear frame 107.

[0203] In this way, the connection portion between the front frame 406 (left side section 406a and right side section 406b) and the rear frame 107 (left side section 107a and right side section 107b) is structured to be rotatable around the axis P. Hereinafter, the connection portion between the front frame 406 and the rear frame 107 will be referred to as the bending portion 405a. The bending portion 405a has the same structure and function as the bending portion 105a in the first embodiment.

[0204] The other ends of the left side section 406a and the right side section 406b are penetrated by a horizontal shaft 406c. The left side section 406a and the right side section 406b are rotatable around the horizontal shaft 406c as a central axis. Furthermore, ends of left and right wires 430 are fixed to the other ends of the left side section 406a and the right side section 406b.

[0205] 11 constitutes a so-called roll-up roller blind with a cylindrical case 422, a sheet member 402a, and a horizontal shaft 406c. The drive mechanism 421 is configured to roll up not only the sheet member 402a but also the left and right wires 430 together with the sheet member 402a.

[0206] By employing the drive mechanism 421, an operator can pull out the sheet member 402a housed in the case portion 422 by pulling the horizontal shaft portion 406c forward. The drive mechanism 421 can also lock (stop) the pulled-out sheet member 402a at any position. Furthermore, by releasing the lock, the drive mechanism 421 can use a spring (not shown) in the case portion 422 to roll up and store the sheet member 402a inside the case portion 422. Various technologies have been proposed for such roll-up type roller blinds, and as these technologies can be adopted as appropriate, detailed explanations will be omitted below.

[0207] Case part 422 is fixed to base part 401 so that the longitudinal direction is the left-right direction. Case part 422 has a slit extending in the longitudinal direction, and sheet member 402a (wire 430) is pulled out from the slit to the outside.

[0208] The left-right width of the case portion 422 is the same as the overall width of the cover 400, and the sheet member 402a, which has a relatively wide width, can be stored in the left-right direction.

[0209] The left and right wires 430 are thread-like members made of a deformable material. The material of the wires 430 may be metal, resin, fiber, or the like. Because the wires 430 are pulled out and wound up, and also have the function of supporting the sheet member 402a, a durable material is preferred. However, because the wires 430 are wound up together with the sheet member 402a by the drive mechanism 421, a material that does not excessively damage the sheet member 402a is preferred.

[0210] As already explained, the front end of the wire 430 arranged on the left side is fixed to the other end of the left section 406a. Similarly, the front end of the wire 430 arranged on the right side is fixed to the other end of the right section 406b. As a result, when the horizontal shaft 406c is operated and the sheet member 402a is pulled out from the case 422, the left and right wires 430 are also pulled out from the case 422 in conjunction with the movement of the horizontal shaft 406c, because the front ends of the wires 430 are fixed to the horizontal shaft 406c.

[0211] Although not shown, the rear end of wire 430 is fixed inside case portion 422 in the same manner as sheet member 402a. As a result, when sheet member 402a is wound up by drive mechanism 421, wire 430 is also wound up inside case portion 422 by drive mechanism 421.

[0212] As described above, the wire 430 is not fixed to the head side ends of the auxiliary frames 403, 404, but passes through the head side ends. Therefore, when the wire 430 is pulled out, the wire 430 hardly exerts a driving force on the auxiliary frames 403, 404. The process of winding up the wire 430 will be described later.

[0213] This concludes the description of the configuration and functions of the cover 400. Next, the operations for transitioning the cover 400 between the use state, the non-use state, and the protection state will be described.

[0214] First, an operation for transitioning the cover 400 from the use state shown in FIG. 12 to the non-use state will be described.

[0215] When transitioning the cover 400 from a used state to a non-used state, the operator moves the second operation frame 405 (the horizontal shaft portion 406c of the front frame 406) downward to slightly pull out the seat member 402a. That is, the operator performs an operation to unlock the drive mechanism 421. Once the drive mechanism 421 is unlocked, the operator releases the second operation frame 405. Thereafter, by winding up the seat member 402a and the wire 430, the drive mechanism 421 moves the seat member 402 to a position where the seat member 402 does not cover the body of the passenger. This transitions the cover 400 to a non-used state.

[0216] More specifically, sheet member 402a of sheet member 402 is wound up by drive mechanism 421, and most of it is stored in case portion 422. In this way, sheet member 402a stored in case portion 422 does not cover the body of the passenger. In other words, the shape of sheet member 402a when most of it is stored in case portion 422 is the "fully closed shape" of sheet member 402a.

[0217] The sheet members 402b and 402c of the sheet member 402 move to positions that do not cover the body of the passenger, based on the following principle.

[0218] When the driving mechanism 421 starts winding up the sheet member 402a and the wire 430, the second operation frame 405 (horizontal shaft portion 406c) starts rotating upward (clockwise in FIG. 11), which causes the sheet members 402b and 402c to rise and be folded.

[0219] Here, when the wire 430 is being wound up, the ends of the front frame 406 (the left side portion 406a and the right side portion 406b) to which the front end of the wire 430 is attached do not pass through the through-holes at the head-side ends of the auxiliary frames 403, 404 (the through-holes are sufficiently small). Therefore, when the wire 430 is being wound up, when the front frame 406 rotates to the position of the auxiliary frame 404, the auxiliary frame 404 is connected to the front frame 406 by the wire 430. As a result, when the front frame 406 subsequently rotates further upward, the auxiliary frame 404 rotates upward integrally with the front frame 406. In other words, the wire 430 has the function of transmitting the driving force of the drive mechanism 421 to the auxiliary frame 404, for example, when transitioning from the use state to the non-use state. The same applies to the auxiliary frame 403.

[0220] In this way, when the left wire 430 is wound around the drive mechanism 421, the left sections 107a and 406a, the left auxiliary frame 404, and the left auxiliary frame 403 start to rotate in sequence, causing the sheet member 402b to be folded and move toward the base 401. Similarly, when the right wire 430 is wound around the drive mechanism 421, the right sections 107b and 406b, the right auxiliary frame 404, and the right auxiliary frame 403 start to rotate in sequence, causing the sheet member 402c to be folded and move toward the base 401.

[0221] When the wire 430 is wound up to the final position, the auxiliary frames 403, 404 and the second operation frame 405 are positioned in the uppermost position. In the uppermost position, the auxiliary frames 403, 404 and the second operation frame 405 are positioned along the base 401. Therefore, the sheet members 402b, 402c are almost completely folded and positioned along the base 401. In this state, the sheet members 402b, 402c are shaped so as not to cover the body of the passenger, and have transitioned to a "fully closed shape."

[0222] In this way, cover 400 can be transitioned from the use state to the non-use state simply by unlocking drive mechanism 421.

[0223] If the driving force of the driving mechanism 421 is insufficient, the operator may manually move the horizontal shaft portion 406c to the vicinity of the driving mechanism 421 while holding the horizontal shaft portion 406c in his / her hand. That is, the operator may simply have the driving mechanism 421 take up the slack in the sheet member 402a and the wire 430. This also reduces the burden on the operator.

[0224] Next, the operation for transitioning from the non-use state to the protection state or the use state will be described.

[0225] First, the operator holds the second operation frame 405 (horizontal shaft portion 406c) in his / her hand and performs an operation to pull out the required amount of sheet member 402a from the case portion 422.

[0226] As a result, the wire 430 is pulled out together with the sheet member 402a. The left side section 406a and the right side section 406b connected to the horizontal shaft section 406c also move downward, and the rear frame 107 connected to the left side section 406a and the right side section 406b rotates downward (counterclockwise in FIG. 11).

[0227] As described above, sheet member 402b is attached to left side sections 107a and 406a, and sheet member 402c is attached to right side sections 107b and 406b. Therefore, when an operator moves horizontal shaft section 406c downward to pull out sheet member 402a, sheet members 402b and 402c are also spread downward.

[0228] When the operator pulls out the sheet member 402a by the amount required for the protective state or the usage state, the unfolded sheet members 402b and 402c pull the auxiliary frames 403 and 404, causing them to rotate downward. After the required amount of sheet member 402a has been pulled out, the operator stops pulling out the sheet member 402a and locks the drive mechanism 421.

[0229] When the operator extends the bent portion 405a and moves the horizontal shaft portion 406c to the front of the saddle 12 while the drive mechanism 421 is locked, the cover 400 transitions to the protective state shown in FIG.

[0230] On the other hand, when the operator bends the bending portion 405a to avoid interference with the saddle 12 and moves the horizontal shaft portion 406c downward, the cover 400 transitions to the use state shown in FIG.

[0231] As described above, the bicycle system 4 in the fourth embodiment includes the bicycle 10, the child seat 11, and the cover 400. The cover 400 is a cover that covers a person (passenger) seated in the child seat 11 that forms the rear seat of the bicycle 10, and includes a seat member 402 that transitions between a first state that covers the passenger from the head to at least the lower legs, and a second state that is open so as not to cover the passenger, and a base 401 that continues to hold the seat member 402 to the child seat 11 when the seat member 402 transitions between the first and second states. As with the other embodiments, this provides a sense of openness without the need to remove the cover when not in use, and makes it easy for the passenger to get in and out of the bicycle.

[0232] Furthermore, by further providing a drive mechanism 421 that assists the sheet member 402 in transitioning from the first state to the second state, the burden of the transition operation is reduced.

[0233] It should be noted that pockets for storing components such as sheet members 402b and 402c and auxiliary frames 403 and 404 when sheet member 402 is not in use may be arranged on the left and right sides of cover 400. Providing such a configuration can prevent deterioration of sheet members 402b and 402c and also improves the appearance of cover 400 when not in use.

[0234] In addition, in the fourth embodiment, the drive mechanism 421 of the cover 400 is described as transmitting the drive force to the auxiliary frames 403, 404 by the wire 430. However, the present invention is not limited to this configuration. For example, a protrusion that protrudes to the right may be provided on the left side section 406a of the front frame 406 (or the left side section 107a of the rear frame 107), and this protrusion may be configured to abut against the left auxiliary frame 404 from below, thereby rotating the auxiliary frame 404 upward.

[0235] Furthermore, a frame extending in the left-right direction may be attached to the sheet member 402a as appropriate, thereby preventing the sheet member 402a from bending downward.

[0236] <5. Fifth Embodiment> 13 is a diagram showing a cover 500 according to the fifth embodiment. FIG. 13 is a diagram showing the cover 500 in the same manner as the cover 100 in FIG.

[0237] The cover 500 of the fifth embodiment differs from the cover 100 of the first embodiment in that it includes a drive mechanism 521. Therefore, the cover 500 can be attached to, for example, a child seat 11, similar to the cover 100. In the following description, for the cover 500 of the fifth embodiment, the same components as those of the cover 100 of the first embodiment are appropriately designated by the same reference numerals, and the description thereof may be omitted.

[0238] The cover 500 has a configuration in which two drive mechanisms 521 are attached to the cover 100. The drive mechanism 521 includes a case portion 522 and a tape 523.

[0239] Driving mechanism 521 has a structure that automatically winds up tape 523 that has been unwound to the outside by using elastic energy stored in a spring (not shown) provided inside case portion 522.

[0240] Meanwhile, tape 523 wound within case 522 can be unwound to the outside of case 522 by pulling the leading end. When unwinding tape 523 to the outside in this manner, drive mechanism 521 can stop unwound tape 523 at any position using a fixing mechanism (not shown) provided within case 522, thereby regulating the amount of tape 523 unwound. A mechanism for stopping tape 523 at any position using a button or the like operable from outside case 522 has also been proposed. For drive mechanism 521, for example, technology conventionally used in mechanisms for winding up tape measures or power cables for vacuum cleaners can be appropriately adopted. Therefore, a detailed description of the configuration and function of drive mechanism 521 will be omitted here.

[0241] The leading ends of the tapes 523 of the left and right drive mechanisms 521 are fixed to both front ends (both ends of the shaft portions extending in the left-right direction) of the front frame 106 (second operation frame 105). Therefore, the position of the leading ends of the tapes 523 changes depending on the position of the front frame 106.

[0242] Case portion 522 of drive mechanism 521 is fixed to base portion 101 so as to be at a height position approximately the same as that of locking portion 101a. More specifically, the position of case portion 522 is determined so that when tape 523 is wound into case portion 522, second operation frame 105 is located at the uppermost position.

[0243] When the operator holds the second operation frame 105 and performs the second opening operation on the cover 500, the tapes 523 are respectively reeled out from the left and right drive mechanisms 521 in accordance with the movement of the front frame 106 during the second opening operation. Therefore, the operator can perform the second opening operation on the cover 500 without any problems.

[0244] If the operator wishes to stop the second operation frame 105 at a desired position, the operator can activate the fixing mechanism inside the case part 522. However, to prevent the stop by the fixing mechanism from being accidentally released and the tape 523 from being unintentionally wound up, the front frame 106 may be fixed with a hook or the like. For example, the front frame 106 may be hooked onto a hook provided at a predetermined position (such as the rear of the saddle 12) to prevent movement, and the second operation frame 105 may be stopped at a desired position.

[0245] When performing the second closing operation, the hooks of the second operation frame 105 are released, the second operation frame 105 is pulled slightly, the fixing mechanism in the drive mechanism 521 is released, and the second operation frame 105 is released. This starts winding up the tapes 523 into the case portion 522, the second operation frame 105 starts moving upward, and the sheet member 102 starts transitioning to the second state. In this way, the drive mechanism 521 winds up the tapes 523 fixed to the second operation frame 105 into the case portion 522, thereby assisting the sheet member 102 in transitioning from the state in use (first state) to the state in non-use (second state).

[0246] When the driving mechanism 521 completes winding up of the tape 523, the bent portion 105a finally extends, and the second operation frame 105 is positioned at the uppermost position. However, even if the driving mechanism 521 in the fifth embodiment moves the second operation frame 105 to the uppermost position, this alone does not move the first operation frame 104 to the uppermost position. Therefore, the sheet member 102a does not assume a fully closed shape. Furthermore, at this time, the relative position between the first operation frame 104 and the second operation frame 105 does not become the smallest, and the sheet member 102b does not assume a fully closed shape either. Therefore, even if the driving mechanism 521 positions the second operation frame 105 at the uppermost position, the cover 500 does not transition to the unused state.

[0247] In the cover 500, after the second operation frame 105 is placed in the uppermost position, the operator performs a first closing operation on the first operation frame 104, thereby placing the first operation frame 104 in the uppermost position. In this way, when both the first operation frame 104 and the second operation frame 105 are placed in the uppermost position, the cover 500 transitions to a non-use state.

[0248] As described above, the cover 500 in the fifth embodiment can be transitioned between a non-use state and a use state without the need for attachment or detachment during such transition. Therefore, the cover 500 can also achieve the same effects as the other embodiments.

[0249] The cover 500 further includes a drive mechanism 521 that assists the sheet member 102 in transitioning from the first state to the second state, thereby reducing the burden imposed when transitioning between states.

[0250] In the fifth embodiment, when the second closing operation is performed, after the locking mechanism of the drive mechanism 521 is released, the second operation frame 105 is released and the second operation frame 105 is moved by the drive mechanism 521 alone. However, when performing the second closing operation, the operator may continue to hold the second operation frame 105 without releasing it and perform the second closing operation as in the first embodiment. In this case, the drive mechanism 521 pulls the second operation frame 105, so the operation of moving the second operation frame 105 upward becomes lighter and the burden is reduced. Furthermore, at this time, since it is easy to hold the first operation frame 104 midway, it becomes possible to simultaneously perform the second closing operation and the first closing operation.

[0251] Furthermore, the number of drive mechanisms 521 is not limited to 2. Furthermore, drive mechanisms 521 may be attached to first operation frame 104 to assist the first closing operation.

[0252] Furthermore, it is preferable to adjust the speed at which the drive mechanism 521 moves the second operation frame 105 (the speed at which the tape 523 is wound up) using gears or the like. For example, if the drive mechanism 521 winds up the tape at a high speed, it is possible that water will splash from the wet cover 500. In such a case, it is preferable to reduce the winding speed using the gear.

[0253] 6. Sixth Embodiment It has been explained that the cover 300 in the third embodiment avoids interference with an interfering object (for example, a rear wheel) by providing a cutout portion in the second operation frame 105. However, the method for avoiding interference with an interfering object is not limited to this.

[0254] FIG. 14 is a diagram that schematically shows the cover 600 in the sixth embodiment. FIG. 14 is a diagram that shows a portion of the cover 600 in use, viewed from the front to the rear (opposite the direction of travel of the bicycle 10). Therefore, the right member of the cover 600 (e.g., the right side section 605c) is located on the left side of FIG. 14, and the left member of the cover 600 (e.g., the left side section 605b) is located on the right side of FIG. 14. Also, in FIG. 14, the configuration of the bicycle 10, child seat 11, guide mechanism 310, etc. is omitted as appropriate.

[0255] The cover 600 differs from the cover 300 in the third embodiment in that it includes a base 601 instead of the base 301, a seat member 602 instead of the seat member 302, and a second operation frame 605 instead of the second operation frame 305. The cover 600 can be attached to, for example, a child seat 11 (a child seat without a canopy), just like the cover 300. In the following description, for the cover 600 in the sixth embodiment, the same components as those in the cover 300 in the third embodiment are appropriately designated by the same reference numerals, and the description thereof may be omitted.

[0256] In FIG. 14, the base 601 of the cover 600 is shown arranged like a wall on the other side when viewed through a cutout portion (a rectangular portion like a window in FIG. 14) of the sheet member 602b.

[0257] Similar to the base 301, the base 601 is a plate-like member disposed approximately parallel to the back plate 15. The base 601 functions as a base (holding portion) that defines and holds each component of the cover 600, and also functions as an attachment portion that attaches the cover 600 to the back plate 15 of the child car seat 11. Similar to the base 301, the base 601 is fixed to the back plate 15 (child car seat 11) by bolts (not shown).

[0258] The base 601 does not have the locking portion 101a. However, the rear side of the base 601 (opposite the side where the back panel 15 is arranged) is provided with a locking mechanism (a member (not shown) having a function equivalent to that of the locking portion 101a) for fastening the second operation frame 605.

[0259] Like the sheet member 302, the sheet member 602 is a thin, planar (cloth-like) member made of a material that can be folded and unfolded. The sheet member 602 is deformable, and therefore can transition into various shapes. The sheet member 602 in the sixth embodiment differs from the cover 300 in the third embodiment in that it includes a sheet member 602b instead of the sheet member 302b. That is, the sheet member 602 is made up of the sheet member 302a and the sheet member 602b.

[0260] The sheet member 602b mainly functions as a rain cover, and is made of a highly water-repellent material, similar to the sheet member 302a. On the other hand, the sheet member 602b is made of a transparent material (a material with high light transmittance), similar to the sheet member 302b. However, part or all of the sheet member 602b may be made of a material with high light-blocking properties.

[0261] Sheet member 602b has end 302c and end 602d. Although not shown in the figures, the end of sheet member 602b that is attached to first operation frame 304 is end 302c, just like sheet member 302b. End 602d is attached along second operation frame 605. Therefore, the position of end 602d changes depending on the position of second operation frame 605. Furthermore, the shape of sheet member 602b changes mainly depending on the relative positions of first operation frame 304 and second operation frame 605.

[0262] Although not shown in the drawings, a slit is provided in the front portion of end portion 302d of sheet member 302b to avoid interference with an obstructing object. In place of the slit, end portion 602d in the sixth embodiment has a substantially rectangular cutout portion formed therein, as shown in Fig. 14. Then, as will be described in detail later, second operation frame 605 (rotating portion 605a) is disposed so as to border the cutout portion formed in end portion 602d.

[0263] Forming such a cutout also makes it possible to avoid interference between the seat member 602b and an interfering object. Nowadays, in the child seat 11, various members (additional belts, strings, cables, holding frames, etc. for attachment) are sometimes placed between the child seat 11 and the saddle 12 to strengthen attachment to the bicycle 10 or to reinforce the members.

[0264] By forming a cutout at the end 602d, the cover 600 can be used with a child car seat 11 that includes such a component, thereby improving the versatility of the cover 600. Note that, because the cutout allows rainwater to enter the living space, it is preferable to make the size of the cutout as small as possible depending on the anticipated obstruction.

[0265] The second operation frame 605 of the cover 600 is provided with a rotating part 605a, unlike the second operation frame 305. The second operation frame 605 is also different from the second operation frame 305 in that it is provided with a left side part 605b and a right side part 605c instead of the left side part 305b and the right side part 305c.

[0266] Fig. 15 is a diagram showing the second operation frame 605 in the sixth embodiment, as viewed from above and facing downward when the cover 600 is in the use state.

[0267] The second operation frame 605 in the sixth embodiment does not have a missing portion like the second operation frame 305 in the third embodiment, so it is not approximately C-shaped (see Figure 8), but is approximately L-shaped in Figure 15.

[0268] The pivoting portion 605a is a frame having a substantially U-shape. One end of the pivoting portion 605a is connected to the left side portion 605b or the right side portion 605c. The connection portions between the pivoting portion 605a and the left side portion 605b and the right side portion 605c form bent portions 605f, 605g. This allows the pivoting portion 605a to pivot around a shaft (not shown) extending in the left-right direction.

[0269] The left side section 605b is a member equivalent to the left side section 305b, and is connected to the ring section 305d in the same manner as the left side section 305b. However, the tip of the left side section 605b (the end not connected to the ring section 305d) is rotatably connected to the rotating section 605a at a bending section 605f.

[0270] The right side portion 605c is a member equivalent to the right side portion 305c, and is connected to the ring portion 305e in the same manner as the right side portion 305c. However, the tip end of the right side portion 605c (the end not connected to the ring portion 305e) is rotatably connected to the rotating portion 605a at a bending portion 605g.

[0271] FIG. 16 is a conceptual diagram showing how the rotating portion 605a rotates. Note that FIG. 16 does not illustrate the sheet member 602. When the second operation frame 605 is disposed at the uppermost position in the shape shown in FIG. 14 (without rotating the rotating portion 605a), the rotating portion 605a is in the position shown by the dashed line in FIG. 16. That is, the second operation frame 605 (the rotating portion 605a) protrudes significantly rearward from the base 601. However, as already described, the rotating portion 605a is rotatable at the bent portions 605f and 605g. Therefore, by rotating the rotating portion 605a downward, for example, the rotating portion 605a can be disposed along the rear side of the base 601.

[0272] In this way, by rotating the rotating part 605a, it is possible to reduce the size of the cover 600 when not in use. At this time, if the rotating part 605a is locked to the base part 601 by the locking mechanism (locking mechanism provided in the base part 601) described above, the second operation frame 605 can be kept stationary, similar to the case where the locking part 101a in the third embodiment is used.

[0273] Note that if the bending portions 605f, 605g are designed so that the external force required to rotate the rotating portion 605a is sufficiently large, a locking mechanism for locking the rotating portion 605a is not necessary. The external force is preferably within a range that allows the rotating portion 605a to be rotated by human force, and is also preferably within a range that prevents the rotating portion 605a from easily and unintentionally rotating due to the weight or vibration of the sheet member 602, etc. In this case, the operation of rotating the rotating portion 605a downward serves as an operation for locking the second operation frame 605.

[0274] In the above description, the rotating part 605a is provided so as to border the missing part of the sheet member 602. In the cover 600, the sheet member 602 may be fixed to the rotating part 605a, but in that case, when the rotating part 605a moves rearward from the base part 601, a part of the sheet member 602 also protrudes rearward from the base part 601.

[0275] Therefore, the sheet member 602 of the cover 600 is not fixed to the pivoting portion 605a. More specifically, the sheet member 602 is not attached to the portion of the pivoting portion 605a that extends in the left-right direction in the arrangement shown in FIG. 14. Therefore, when operating the second operation frame 605, the operator can easily grip that portion of the pivoting portion 605a without being obstructed by the sheet member 602. On the other hand, the sheet member 602 is slidably attached to the portion of the pivoting portion 605a (including a portion of the left side portion 605b and the right side portion 605c) that extends in the up-down direction in the arrangement shown in FIG. 14 (for example, similar to the structure of a string and cloth in a drawstring bag). As a result, even when the pivoting portion 605a is pulled up to the rear of the base 601, the sheet member 602 remains in front of the base 601 without protruding rearward.

[0276] As described above, the cover 600 in the sixth embodiment can also provide the same effects as those of the above embodiments.

[0277] Furthermore, by providing the second operation frame 605 of the cover 600 with the pivoting portion 605a, the edges of the missing portions of the sheet member 602b can be reinforced. That is, if a cut is formed in the sheet member 602b to avoid an obstruction, the sheet member 602b may tear at the cut. Therefore, by providing the pivoting portion 605a, the durability of the sheet member 602b is improved.

[0278] Furthermore, since the rotating portion 605a that reinforces the sheet member 602b has a rotatable structure, the rotating portion 605a can be prevented from protruding rearward when not in use, and therefore the cover 600 can be made smaller when not in use.

[0279] <7. Variations> Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be modified in various ways.

[0280] For example, an excess portion (gusset) may be provided in advance around the end portion 102d of the seat member 102b and secured with a hook-and-loop fastener, string, etc. By preparing such an excess portion, the excess portion can be pulled out and used when the area (size) of the seat member 102b is insufficient due to the physique of the passenger, their belongings, etc.

[0281] In the above embodiment, the frame (e.g., second operation frame 105) located at the lowest position in the use state is operated. However, the frame to be operated is not limited to the lowest frame. For example, a frame located in the center of sheet member 102b may be configured to be fixed to locking portion 101a, and the second opening operation and the second closing operation may be performed by operating this frame. In particular, if such a frame is provided near the middle between end 102c and end 102d of sheet member 102b and fixed to locking portion 101a, it is possible to prevent a portion of sheet member 102b from hanging down below first operation frame 104 located at the lowest position. Furthermore, in this case, since end 102d of sheet member 102b is located at the outermost position, if this portion is made of a material with high light-blocking properties, the transparent portion of sheet member 102b can be protected.

[0282] Furthermore, for example, the portion of the seat member 102 that covers the passenger's lower legs (seat member 102b) may be stored between the sunshade portion (seat member 102a, auxiliary frame 103, and first operation frame 104) and the base 101. That is, the second operation frame 105 may be provided between the seat member 102a and the base 101. With this configuration, when the second opening operation is performed, the sunshade portion moves downward in conjunction with the second operation frame 105. When the first opening operation is performed on the first operation frame 104 that has moved downward, the seat member 102a can be transitioned to a fully open shape near the passenger's lower legs, and the sunshade portion can be used as a mudguard.

[0283] Although not specifically described in the above embodiment, the cross-sectional shape of the frame (frame) may be a substantially H-shape, a substantially U-shape, or the like, so that grooves are formed on the surface of the frame along the extension direction of the frame. By forming such grooves, for example, rainwater that accumulates on the sheet member 102 can be actively guided to flow down in the left-right direction along the grooves of the frame (such as the auxiliary frame 103 or the first operating frame 104). This reduces the amount of accumulated rainwater, thereby preventing passengers, the operator, or luggage from getting wet when the state of the cover 100 is changed. [Explanation of symbols]

[0284] 1,2,3,4 Bicycle System 10. Bicycles 100, 200, 300, 400, 500, 600 covers 101,301,401,601 base 101a Locking part 101b, 101c holding member 102, 102a, 102b, 202, 302, 302a, 302b, 402, 402a, 402b, 402c, 602, 602b Sheet member 102c,102d,202c,202d,302c,302d,602d End 103,303,309,403,404 Auxiliary Frame 104,304 First operation frame 105,305,405,605 Second operation frame 105a,405a,605f,605g Bend part 106,406 Front Frame 107 Rear frame 107a,305b,309b,406a,605b Left side 107b,305c,309c,406b,605c Right side 107c, 305a, 309a, 406c Horizontal shaft 11,21 Child seats 12 Saddle 13 Headrest 14 Side panel 15,25 backboard 16 Bottom plate 17 Footrest 28 Canopy 301a Upper fixing part 301b Lower fixation part 305d, 305e, 309d, 309e ring section 310 Guidance mechanism 311 Upper horizontal axis 312 Lower transverse axis 313 Information Department 313a Curved section 421,521 Drive mechanism 422,522 Case part 430 Wire 523 Tape 605a Rotating part

Claims

1. A cover for covering a person seated on a seat forming the rear seat of a bicycle, a seat member that transitions between a first state in which the seat member covers the head to at least the lower legs of a person seated on the seat member and a second state in which the seat member is open so as not to cover the person seated on the seat member; a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state; a frame supporting the seat member so as to form a living space for a person seated on the seat portion; Equipped with the aggregate comprises a first member and a second member; the second member rotates around a first rotation shaft as a central axis, a connecting portion between the first member and the second member is connected in a state in which the first member and the second member rotate about a second rotation axis, The cover, wherein the first rotation shaft and the second rotation shaft are different shafts that are not coaxial with each other.

2. 2. The cover of claim 1, In a plan view seen in the axial direction of the first rotation shaft, The first rotation shaft is disposed near one end of the second member, a cover in which the second rotation shaft is disposed near another end of the second member different from the one end;

3. 3. The cover according to claim 1 or 2, the aggregate is held and manipulated by an operator to transition the sheet member between the first state and the second state; The sheet member remains held by the holding portion, and when the frame is manipulated, the cover transitions to a third state in which it covers the bicycle rider's saddle.

4. 3. The cover according to claim 1 or 2, The cover transitions to a third state in which the seat member covers the bicycle rider's saddle while remaining held by the holding portion.

5. A cover for covering a person seated on a seat forming the rear seat of a bicycle, a seat member that transitions between a first state in which the seat member covers the head to at least the lower legs of a person seated on the seat member and a second state in which the seat member is open so as not to cover the person seated on the seat member; a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state; a frame supporting the seat member so as to form a living space for a person seated on the seat portion; Equipped with the aggregate is held and manipulated by an operator to transition the sheet member between the first state and the second state; The sheet member remains held by the holding portion, and when the frame is manipulated, the cover transitions to a third state in which it covers the bicycle rider's saddle.

6. A cover according to any one of claims 1 to 5, The cover further includes a guide mechanism that guides the state transition of the sheet member.

7. A cover according to any one of claims 1 to 6, The cover further includes a drive mechanism that assists the sheet member in transitioning from the first state to the second state.

8. A bicycle system comprising a bicycle, a seat portion forming a rear seat of the bicycle; a cover for covering a person seated on the seat; Equipped with The cover is a seat member that transitions between a first state in which the seat member covers the head to at least the lower legs of a person seated on the seat member and a second state in which the seat member is open so as not to cover the person seated on the seat member; a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state; a frame supporting the seat member so as to form a living space for a person seated on the seat portion; Equipped with the aggregate comprises a first member and a second member; the second member rotates around a first rotation shaft as a central axis, a connecting portion between the first member and the second member is connected in a state in which the first member and the second member rotate about a second rotation axis, A bicycle system in which the first rotation axis and the second rotation axis are different axes that are not coaxial with each other.

9. A bicycle system comprising a bicycle, a seat portion forming a rear seat of the bicycle; a cover for covering a person seated on the seat; Equipped with The cover is a seat member that transitions between a first state in which the seat member covers the head to at least the lower legs of a person seated on the seat member and a second state in which the seat member is open so as not to cover the person seated on the seat member; a holding portion that continues to hold the seat member against the seat portion when the seat member transitions between the first state and the second state; a frame supporting the seat member so as to form a living space for a person seated on the seat portion; Equipped with the aggregate is held and manipulated by an operator to transition the sheet member between the first state and the second state; The bicycle system wherein the sheet member remains held in the holding portion and transitions to a third state in which it covers the bicycle rider's saddle when the aggregate is manipulated.

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