TW200408364A - Childcare instrument - Google Patents

Abstract

A childcare instrument has a core member 6 removably accommodated in a bag on the backside of a baby carriage, and a first plate member 7 and a second plate member 8 laminated together. The first plate member 7 has first opening 22 through the first plate member 7. The second plate member 8 has a second openings 23 through the second plate member 8 and is so disposed that the position of the second plate member 8 relative with the first plate member 7 can be changed from a first position where the first openings 22 and the second openings 23 are aligned with each other to a second position where the first openings 22 and the second openings 23 are offset each other. With this arrangement the degree of ventilation can be adjusted.

Description

200408364 V. Description of the Invention (1) [Technical Field of the Invention] The present invention relates to a stroller, a baby seat, a baby frame (basket), a baby carrier, and other baby-care appliances. [Prior art] In the development of baby-care equipment, for example, it is preferable to provide a comfortable environment for a child sitting on a seat. It is also desirable to provide a sense of security for mothers, etc., who operate baby-care appliances such as strollers. One of the elements that provides a comfortable environment for children is ventilation. In summer or hot and humid days, to provide a cool feeling for the child sitting in the seat, it is best to have a seat with good ventilation. On the other hand, in winter or cold weather, it is desirable to have a seat that prevents intrusion of interstitial wind and maintains thermal insulation. In addition, in other baby-care devices related to baby carriers, there are mother-side equipment and child-side carriers installed on the mother's side, but both of them can be used in summer or hot and humid days. Provides breathability for coolness. On the other hand, in winter or cold weather, it is desirable to maintain heat retention. On the other hand, in the case of a baby stroller having a canopy, for example, when the baby stroller is pushed and operated in the rear, the canopy can cause obstructions and the child in the seat cannot be seen, and the mother may feel unsafe. SUMMARY OF THE INVENTION The object of the present invention is to provide a baby-care device capable of adjusting the degree of ventilation. Another object of the present invention is to provide a device which can be confirmed as required.

3141 ^ 7.ptd Page 7 200408364 i'Explanation of invention (2). Baby carriage with seat for child figure. The first aspect of the present invention is based on the premise that a baby-care device with a seat to form a wall for accommodating a child space is provided, and has the following characteristics. That is, the wall system includes first and second plate members that are arranged to overlap each other. The first plate member has a first opening penetrating in a thickness direction. The second plate member has a second opening penetrating in the thickness direction, and is arranged to change the position between the first position where the first and second openings are aligned and formed, and the second position which deviates from the first and second openings. . According to the present invention having the above configuration, when the second plate member is held in the-| upright position, the first and second openings formed by the alignment can keep the inside of the seat ventilated, so that good air permeability can be obtained. On the other hand, when the second plate member is held in the second position, the first and second openings are blocked, so that no wind can pass through the openings, and good heat insulation can be obtained. In one preferred embodiment of the present invention, the first and second plate structures are arranged along the seat surface, the back surface or the side surface of the seat. The first and second plate members may be disposed on only one of the seat surface, the back surface, and the side surfaces, or the first and second plate members may be disposed along all surfaces. In the case where the baby care device includes a core material arranged along the seat surface or the back surface of the seat, the core material may be provided with the first and second plate members described above. The it. hidden baby device includes a seat arranged along a seat surface and a back surface of the seat, and a back bag attached to a back portion of the seat. In this case, the core material can also be stored in the bag in a removable manner. -In another preferred embodiment of the present invention, the baby-care device is provided with a canopy on the upper part of the seat. At this time, the walls constituting the car awning are provided with the above-mentioned first and second

314187.ptd Page 8 200408364 V. Description of the invention (3) Plate member. If such a structure is formed, the child in the seat can be seen through the first and second openings formed when the second plate member is held in the first position, so that mothers who operate baby-care appliances can feel safe. . In another aspect of the present invention, the baby care device with a seat is provided with a wall forming a space for accommodating a child, and the wall system has a vent hole and an opening and closing mechanism for opening and closing the vent hole. When used as a dynamic opening and closing mechanism and opening the air vent, the seat can be kept ventilated. On the other hand, when the air vent is closed as a dynamic opening / closing means, wind can be prevented from entering. In another aspect of the present invention, with regard to a baby-care device for a baby-raising harness, the baby-side carrier has a mother-side mounting device, and a child-side carrier connected to the mother-side mounting device and capable of holding a baby. The carrier is provided with a child-side back support member for supporting the back of the baby, the child-side back support member has a vent hole, and a first opening and closing mechanism for opening and closing the vent hole. When the first opening and closing mechanism is actuated and the air vent is opened, the baby's back can be ventilated. On the other hand, when the first opening and closing mechanism is operated and the ventilation hole is closed, wind can be prevented from entering. In another preferred embodiment of the present invention, the mother-side mounting device includes a mother-side back support member for supporting the mother's back, the mother-side back support member has a ventilation hole, and a second opening and closing opening and closing the ventilation hole. mechanism. Similarly to the child-side back support member, when the second opening and closing mechanism is operated and the air vent is opened, the mother's back can be ventilated. On the other hand, when the second opening / closing mechanism is operated and the vent hole is closed, wind can be prevented from entering. [Embodiment] (First Embodiment)

Jlf!? 7.ptd Page 9 200408364 V. Description of the Invention (4). Figure 1 shows a stroller as an example of a baby care device with a seat. The baby carriage 1 shown in the figure is provided with a seat 2 extending along the seat surface and the back surface of the seat; and a net-shaped bag 3 attached to the back of the back portion of the seat 2. The upper part of the bag 3 is provided with a cover part 4 through the button 5 to close the upper opening. Inside the bag 3, a core material 6 which imparts rigidity to the back portion of the seat 2 is housed in a removable manner. 2 and 3 show details of the core material 6. As shown in the figure, the core material 6 includes a first plate member 7 and a second plate member 8 which are arranged to overlap each other. Compared with the first plate member 7 and the second plate member 8 which overlaps behind it, the area and thickness of the 构成 jjp direction expansion are smaller. The upper plate 9 is fixed to an upper portion of the first plate member 7 via a fixing pin 10. As shown in Fig. 3, there is a gap corresponding to the thickness of the second plate member 8 between the upper plate 9 and the first plate member 7. The upper end portion of the second plate member 8 is sandwiched between the upper plate 9 and the first plate member 7 and is provided so that the position can be changed on the first plate member 7 in the vertical direction. The upper plate 9 will be described in detail with reference to FIG. 4. The upper portion of the upper plate 9 has a stepped recessed portion 11 with a reduced thickness, and a guide through hole 12 extending through the thickness direction and extending upward and downward. In addition, the leaf springs 15 extending up and down along the guide through hole 12 are held between two separate pins 1 3, 1 and 4. The leaf spring 1 5 is two locking protrusions 2 6 and 2 7 protruding from the guide through hole 12 side. As shown in FIG. 2 and FIG. 3, the operating handle 16 is fixed to the second plate member 8 via the connection pin 19. As shown in detail in Fig. 5, the central portion of the operating handle 16 has a central tab 17 that can be grasped by fingers. A hole 18 is provided at a position below the central protruding piece 17 through which the connecting pin 19 is inserted. In addition, the

314187.ptd Page 10 200408364 V. Description of the invention (5) ”—The bottom surface is provided with embedded protrusions 2 4 slightly extended in the up-down direction. The operating handle 16 is located in the stepped recess 11 of the upper plate 9, and the embedded protrusion 24 of the operating handle 16 is located in the guide through hole 丨 2 of the upper plate 9. The inserting protrusion 24 of the handle 6 is provided with a locking recess 25 that is fastened to a locking protrusion 26 or 27 of the leaf spring 5. The operating handle 16 is formed to change the position of the stepped recess 丨 丨 of the upper plate 9 upward and downward. In the state shown in FIG. 2 and FIG. 3, the operating handle 16 is located at the uppermost position in the stepped recess 11, and the embedded protrusion 24 of the operating handle 6 is also located in the guide through hole of the upper plate 9. The top position within 1 2. People notice the lower portions of the first and second plate members 7,8. The second plate member 8 is formed with a guide penetrating hole 20 extending upward and downward, and the first plate 1 chip 7 is provided with an upright pin 21 inserted into the guide penetrating hole 20. In the state shown in Figs. 2 and 3, the upright pin 21 is located at the bottom of the guide through hole 20. The first plate member 7 and the second plate member 8 are formed with a plurality of through holes or openings 22 and 23, respectively, penetrating in the thick production direction. In the positions shown in FIGS. 2 and 3, the positional relationship between the opening 2 2 of the first plate member 7 and the opening 2 3 of the second plate member 8 is formed. For convenience of explanation, the position of the relationship is set to the z-th position. In this state, among the two locking projections 26 and 27 of the leaf spring 15, the upper locking projection 26 is engaged with the engaging recess 24 of the operation handle 6 25. Make the first and second plate members 7, 8 out of position. From the state shown in FIG. 2 and FIG. 3 ′, when the central moon 17 of the operation handle 丨 6 is held downward with fingers, the second plate member 8 slides the first plate member 7 upward and downward. In this state, the opening 2 2 and the first plate member 7

_87.ptd Page 11 200408364 V. Description of the invention (6) The opening 2 3 of the two plate member 8 becomes a deviated positional relationship, and the two openings 2 2 and 2 3 become closed. For convenience of explanation, the position relationship is set as the second position. In this state, as shown in FIG. 6, the locking protrusion 2 7 located below the two locking protrusions 2 6 and 27 of the leaf spring 15 is engaged with the embedded protrusion 2 of the operation 16. The buckling recesses 25 of 4 prevent the positions of the first and second plate members 7 and 8 from being relatively displaced. In summer or hot and humid days, the second plate member 8 is held in the position shown in Figs. 2 and 3. In this state, since the first opening 22 of the first plate member 7 and the second opening 23 of the second plate member 8 are aligned and formed, the wind will open the opening 2 2, 2 3 of the core material 6 on the back side and enter the seat. Inside, and can give children a cool spine. In winter or cold weather, the second plate member 8 is moved downward and held at the second position shown in FIG. 6. In this state, the first opening 22 of the first plate member 7 and the second opening 23 of the second plate member 8 will be in a deviating positional relationship, which will cause the two openings 2 2, 2 3 to be blocked, so There is no invasion of wind through the opening, and good thermal insulation can be maintained. In the embodiments shown in Figs. 1 to 6, although the openings 2 2 and 2 3 of the first plate member 7 and the second plate member 8 are in the form of through-holes, other forms may be used. For example, as shown in FIG. 7, it is also possible to provide notches 2 9 extending toward the center on both sides of the board 1¾ (ox 2 28). Although FIGS. 1 to 7 are used to explain the advantages of the present invention These embodiments are exemplified. With respect to these embodiments, various modifications and variations can be made within the same scope and the same scope as the present invention. Hereinafter, a few examples are described below.

314187.ptd p.12 200408364 V. Description of the invention (7) (1) In the embodiment shown in the figure, the first and second plate members are arranged along the back of the seat. In other examples, the first and second plate members may be arranged along the seat surface or the side surface of the seat. If the first and second plate members are arranged on all surfaces of the seat surface, the back surface, and the side surface, better air permeability can be obtained. (2) In the illustrated embodiment, the core material includes first and second plate members. In other examples, the body wall of the baby-care device constituting the seat may itself be provided with the first and second plate members. (3) As far as the baby raising device with a seat to which the present invention is applicable, it is not limited to a stroller, and may include, for example, a baby seat and a baby carriage. (4) In the embodiment shown in the figure, the first plate member is set to be stationary, and the second plate member can be changed in position. Conversely, it may be provided that the position of the first plate member can be changed while the second plate member is stationary, or both positions can be changed. In addition, it may be provided to be movable in the left-right direction instead of the two-plate members to be relatively movable in the vertical direction. (5) In the embodiment shown in the figure, when the first and second plate members are in the first positional relationship, the openings of the two are aligned and shaped, and when in the second positional relationship, the openings of the two are deviated to form an occlusion. status. In the modification example, the openings of the two plate members may be formed at an intermediate position in a "half-open state" in which only half of the plate members are formed. (6) In the illustrated embodiment, although a plate spring is used to prevent the position of the two plate members from deviating when the two plate members are in the first and second positional relationship, a mechanism that should be changed to a plate spring may be used. . (7) In the case of car tents, car tents also become shaped

Issue 4787.ptd Page 13 200408364 V. Description of the Invention (8) The wall of ϊϊ ϊϊ ϋ. With the push operation on the back, the operation is attached. = = Will make: if the child cannot see the right side of the panel member, the wall of the car can be equipped with the first and second panel members as described above. Π opens and you can see the small • in the seat, so it can; give the mother of the stroller a sense of security. Feng Dingyun made of wood… 8 = Rong… The wall of space can also be a non-implementation form. In this case, the wall has an opening and closing mechanism for opening and closing the vent hole. Used as a dynamic opening-closing mechanism On the other hand, when the air vent is closed by opening and closing the mechanism, 1 the wind will not invade. As for the two-closed mechanism, for example, a cover member that closes the vent hole, a plate member that can be screwed to the wall, and a soft thin plate member that is attached to the wall can be used. Here, FIG. 8 shows a stroller 300 with a canopy. The basic structure of the stroller 3 0 0 is the same as that of the stroller shown in FIG. 1. And a seat part 3 02 and a backrest part 3 0 3 which can be reclined to the rear with respect to the seat part 3 02 are formed by the seat part 3002 and the backrest part 3 The state of the child's space on the bed. A car tent 307 covering the space for accommodating a child is provided on the seat portion 302 and the backrest portion 303. The backrest portion 3 0 3 is provided with a head tank 301 for protecting the top of the baby's head. The head guard 301 and the backrest portion 303 are provided with the same ventilation mechanism (ventilation (VentUat ^ n > ^ structure)) 3 1 0, 3 1 1 as the mechanism described in Figs. F to 5 above. 'Car canopy 307 also has a side canopy 304, a middle

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Page 14 200408364 V. Description of the invention (9) Canopy 3 0 5 and rear side canopy 3 0 6. The front side canopy 3 04 is provided with a ventilation window 3 04 made of a mesh member or the like, which can visually inspect the baby's face. In addition, the rear side awning 3 06 is also provided with a ventilation window 3 0 6 a composed of a mesh member or the like, and an opening and closing cover 3 8 8 for opening and closing the ventilation hole 3 6 6 a is also provided. As described above, as shown in FIG. 8, the ventilation area is also provided in the car canopy 307, and even when the car canopy 3 7 covers the entire baby carriage 3 0 0, the ventilation path shown by the arrow F can be ensured 'And you can get good ventilation in a child-friendly space. (Embodiment 2) FIG. 9 shows an example of a baby carrier of a baby-care device. The baby month V 50 shown in the figure has a mother-side fixture 2000 installed on the mother's side 2,000, and a mother-side fixture 2000 connected to the mother-side fixture 2,000 to hold the baby 2000 Child side vehicle 100 Child side vehicle 100 is provided with a child side back support member i 〇 丨 for supporting the back of a baby 2000 as shown in the figure. Similarly, as shown in Fig. 9 and Fig. 10, a mother-side back support member 201 is provided on the mother's 1000 side to support the mother's 1,000-side back. ^ The child-side back support member 101 is provided with a vent hole and a first opening and closing mechanism for opening and closing the vent hole. Its detailed structure is shown in Figure 丨 丨. The child-side back support member 10 has a first plate member 102 and a second plate member 104 which are arranged to overlap each other. The first plate member 102 is provided with a plurality of first openings 102a penetrating in the thickness direction. In addition, the second plate member 104 is also provided with a plurality of second openings 104a penetrating through the thickness direction. The first opening 102a and the second opening 104 are sensed to be relatively changeable. 200408364 1 51. Description of the invention (ίο) • Placed in the positions of all the openings as shown in Figure 11 and the first consistent by sliding movement And the first position of the alignment forming is offset from the second position. A counter member 104 is formed so that all openings face the first plate member 102-and the buffer member 103 is provided with the opposite bank;]] is provided with a buffer member 103 and a third opening 103a. In addition, the first opening of the second board member of the fourth party, the board member 102, is provided with the buffer member: The 04 series is opposite to the first plate member 102 and the second handle Fudobe's on the evening side. The lower end is provided with an open sigma region ^ 2b, 'Niu 4 and the buffer member 103 ^ 102b > l〇3b > 104b ^ ^ 〇3b, l〇4b' using the opening 00 1 u 4 b to configure useful and spare 102, the second plate member 104, and the buffer plate member ⑽. Thereby, the rubber member of the second plate member 10 is slid and moved to the ground, in a normal shape; the member Η2 is aligned and formed in the first position. The positions of all the openings are a first plate member 10, a second plate member 104, and 5; the extended surname A is the ancient, s〆, 'youchong member 1 03' through the net member, in The first Γ air-permeable covering member 107 is covered. The fork is provided with a hook and the like on the upper end of the first plate member i04, and the cover member 107 above the stopper 105 is provided, and the hook and the like are fastened on the buckle and lnR ...... / The stopper 105 can be attached and detached, and the two 'Γ second plate member 104 slides to the top, and the stopper is locked in the state of the stopper 10, and the position of the mouth can deviate from the second position T. Select all open mother-side back support members 2 〇 丨 and the detailed structure of the child is shown in Figure 12. The younger brother opens and closes the mechanism.

314187.ptd _®__llli Page 16 200408364 V. Description of the invention (11) One one ^ --- one ^ The mother-side back support member 2 〇1 has a plate member 2 0 2 arranged on top of each other, and a second plate member The 20th buckle has a plurality of first openings 202a extending through the thickness direction in the first plate member 202. In addition, the two 1 plate members 2 0 4 are also provided with a plurality of second openings 204 penetrating through the thickness direction. The second opening 20 2a and the second opening 204 are set to be relatively changeable in position as in the first. The positions of all the openings shown in FIG. 12 are aligned with the forming position, and the second plate structure 04 is slid to move between the second positions. All the openings of the text are slow on the second side; plate—open the door of 0202a, there is a buffer member 209 on the side corresponding to the 204th child side of the first plate member 202, and the second plate member has The second piece 20 9 corresponding to the second plate member 204 is set to 20 9a. ‘幵” u ZU4a Joy Four Openings On the first plate member 202, the second plate member? η4, ρ β and the bottom of the buffer member 20 9 are adjacent to the eight pieces 2 04. The friendly punching member 203 uses 204b and 209b, which is useful while / „The knife has opening areas 202b, 203b, and _, which are useful for configuration : Even = f2〇2b, 2 ° 3b, 204b, and 20, buffer member 2 0 3, and buffer member 2 0: 2 [2, 2 and 2 plate members, so that the second plate member 204 can be opposed It is the first elastic member 208. It moves. In the normal state, it is the first position where the second door counter member 202 slides relatively. The positions of the openings are the same, and the first plate member 202, the second Two-plate cushioning member _ through the mesh member, etc .; cow: heart, milk, raw cover member 2 007200408364 V. Description of the invention (12) '------ Cover. Also' in the second plate The structure 9η, θ produces 4 L s. The upper end of the piece 204 is provided with a hook stopper 205 such as a hook body, and the buckle stopper 205 # 士 # ^ 9 π ^, Fang Zhifu member 2 0 7 The hook body 设有 4 l η λ _ 4 which can be detachably fastened is provided with the buckle stopper 2, and the temple buckle stopper 2 0 6. When the second plate member 2 0 4 is slid to the top, and Buckle μ g 9 Π R4 I _L_ t 4 stopper 2 0 5 buckle In the state of the buckle 2 06, you can choose the second position where all the opening positions deviate. In the summer or hot days, keep the second plate member} 〇4, 2 〇4 The first position shown in Fig. 11 and Fig. 12. In this state, because the first openings of the first plate member 1 0 2, 2 0 2 1 0 2 a, 2 0 2 a and the second plate member The second openings 1 0 4 and 2 0 4 are aligned and shaped so that the wind will enter and give the child and mother a cool feeling on the spine. In winter or cold wind, make the second plate member 1 〇4, 204 slide to the top and hold it. In this state, since the first openings 102a, 202a of the first plate member 102, 202 and the second openings of the second plate member 104, 204 104a and 204a are deviated from the positional relationship, and the two openings are blocked, so there is no invasion of wind through the openings, and good thermal insulation can be maintained. In addition, although the preferred embodiment is described in the second embodiment, However, these systems are examples. With respect to these embodiments, the same systems as those described in the first embodiment can be modified in various ways. And deformation.

314187.ptd Page 18 200408364 Brief Description of Drawings [Simple Description of Drawings] Figure 1 is a perspective view showing a baby carriage according to the first embodiment of the present invention. FIG. 2 is a front view showing the first and second plate members overlapped. Figure 3 is a sectional view taken along line III-I I I of Figure 2. Figure 4 is a front view of the upper plate. Figure 5 is a front view of the handle. Fig. 6 is a diagram showing a state in which the embedded protrusion of the operation handle enters into the guide through hole of the upper plate. Fig. 7 is a front view of another example of a display panel member. Fig. 8 is a side view showing another baby carriage according to the first embodiment of the present invention. Fig. 9 is a perspective view showing a baby carrier according to a second embodiment of the present invention. Fig. 10 is a plan view showing the structure of the mother-side installation member. Fig. 11 is a sectional view showing the structure of the child-side back support member 101. Fig. 12 is a sectional view showing the structure of the mother-side back support member 201. l ·, 300 stroller 2 seat 3 bag 4 cover 5 button 6 core material 7, 102, 2 0 2 first plate member 8, 1 0 4, 2 0 4 second plate member

Face 87.ptd Page 19 200408364 Simple illustration 10 Fixing pin 12, 20 Guide through hole 15 Leaf spring 1 7 Central tab 19 Connecting pin 22, 102a, 202a First opening 24 Embedded projection 2 6, 2 7 Buckle protrusion 10 0 Child-side carrier top plate 11 13 16 18 21 23 25 50 Step difference recess 1 4-pin operating handle standing pin second opening 104a, 204a Buckle recess baby carrier Iφΐ Child side back support member 102b, 103b , 104b, 202b, 203b, 204b, 209b open sigma area 103, 2 0 3, 2 0 9 buffer member 103a third opening 1 0 5, 1 0 6, 2 0 5, 2 0 6 108 201 301 303 Supporting member 1 0 7, 2 0 7 Covering member 2 0 0 Mother side fixture 209a Fourth opening 3 0 2 Seat 3 0 4 Front side awning 3 0 6 Rear side awning 3 # 7 Car hood 3 1 0, 3 1 1 Ventilation mechanism elastic member Mother-side back Head guard Backrest 305 Middle canopy 3 0 6a Ventilation window 308 Opening and closing cover 1 0 0 0 Mother 2000 Infant

314187.ptd

Claims (1)

200408364 VI. Application Patent Scope 1. A baby-care appliance comprising a baby-care appliance with a seat forming a wall for accommodating a child space, wherein the wall is provided with first and second plate members (7, 8), the first plate member (7) has a first opening (22) penetrating through the thickness direction, the second plate member (8) has a second opening (23) penetrating through the thickness direction, and is arranged to be opposite to each other The change position is between the first position juxtaposed with the first and second openings (2, 2 3), and the second position staggered with the first and second openings (2, 2, 3). 2. In the case of the babycare device in the scope of patent application No. 1, wherein the first and second plate members (7, 8) are arranged along the seat surface, back surface or side surface of the seat. 3. For example, the babycare device of the scope of application for a patent, which includes a core material (6) arranged along the seat surface or back of the seat, and the core material (6) includes the first and second plate members (7). ,8 ). 4. For example, the babycare device in the scope of patent application No. 3, which includes a seat (2) arranged along the seat surface and the back of the seat; and a back pocket (installed on the back of the seat (2)) ( 3), the core material (6) is contained in a manner that can be taken out of the bag (3). 5. If the babycare device in the scope of patent application item 1, wherein the upper part of the seat is equipped with a carport (3 0 7), a4K7.ptd Page 21 200408364 June 6. Scope of patent application The wall constituting the aforementioned car hood (307) has the aforementioned first and second components. A baby-care device includes a baby-care device with a seat forming a wall for accommodating a child, wherein the wall has a vent hole (2, 2 3), and an opening-closing mechanism for opening and closing the vent hole. A baby-care device comprising a mother-side mounting device (200) and a child-side carrier (100) connected to the mother-side mounting device (2000) and holding a baby. The child-side carrier (丨 〇〇) is provided with a child-side back support member (丨 〇 丨) for supporting the back of the baby, and the child-side back support member (101) has ventilation holes 〇2a, l〇 3a), and a first opening / closing mechanism (104) for opening and closing the vent hole (102a, 103). For example, the official Xiong Jia ^ installation equipment (2 0 0) in the scope of patent application of the eye, and prepared support f, ten. Goyi ",,,,, and the mother side support member (201i, teeth are returned to the mother The back side of the mother's side and the back of the mother's side (2009a, j fork pull member (201) has vent holes Uza, 203a), and an opening and closing mechanism (204). μ, the first of the stomata (2 0 2a, 2 0 3a)