AU2024264625A1

AU2024264625A1 - Handle and vehicle-mounted refrigerator

Info

Publication number: AU2024264625A1
Application number: AU2024264625A
Authority: AU
Inventors: Yabo Hu; Anton Lundqvist; Peng Wang
Original assignee: Dometic Sweden AB
Current assignee: Dometic Sweden AB
Priority date: 2023-11-29
Filing date: 2024-11-13
Publication date: 2025-06-12
Also published as: CN221593240U

Abstract

In a first aspect, the present invention relates to a handle. The handle can be detachably and at least partially slidably mounted to a lower end of a refrigerator door, and comprises an opening which fits with a lower bolt and an opening of a lower locking mechanism. When the refrigerator 5 door is locked relative to a refrigerator body, the lower bolt is inserted into both an opening of the handle and the opening of the lower locking mechanism. When the refrigerator door is unlocked, at least a part of the handle can slide outwardly relative to the refrigerator door, such that the lower bolt is upwardly moved out of the opening of the lower locking mechanism and the opening of the handle. In a further aspect, the present invention relates to a vehicle-mounted refrigerator o comprising a handle detachably mounted to the lower end of a refrigerator door of the refrigerator according to the first aspect of the present invention. - 10 11 20 FIG. la 12 20 FIG. lb 1I /

Description

11

20

FIG. la

12

20

FIG. lb

1I /

Description

HANDLE AND VEHICLE-MOUNTED REFRIGERATOR TECHNICAL FIELD

The present invention relates to the technical field of refrigeration devices, and in particular to a handle and a vehicle-mounted refrigerator which can be mounted with the handle.

BACKGROUND

Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field.

o For a mobile refrigerator used in vehicle-mounted environment, sometimes, an external force caused by road bumps and the like causes a refrigerator door to be unexpectedly opened and makes it impossible for the refrigerator door to be normally closed. Therefore, the refrigerator door of the vehicle-mounted refrigerator is provided with a limiting portion, for example, a double-locked configuration comprising an upper bolt and a lower bolt which is in linkage with the upper bolt, s whereby the refrigerator door is locked relative to a refrigerator body by means of the respective fit between the upper and lower bolts and upper and lower locking mechanisms with which the refrigerator body is provided. When the refrigerator door is unlocked, the upper bolt and the lower bolt which are in linkage with each other are respectively moved out of the upper locking mechanism and the lower locking mechanism by means of a grip located at an upper part of the o vehicle-mounted refrigerator (for example, by operating the handle at the upper part in such a way that the upper bolt is downwardly moved out of the upper locking mechanism; moreover, since the upper bolt and the lower bolt are in linkage with each other, the downward movement of the upper bolt causes the lower bolt to be upwardly moved out of the lower locking mechanism so as to lock the refrigerator door).

However, due to the problem of limited space in the vehicle-mounted environment, the vehicle-mounted refrigerator may sometimes be placed at a high position, resulting in that it is difficult/inconvenient for a user to access to and operate the grip located at the upper part of the refrigerator to unlock the refrigerator door, and thus leading to inconvenient use.

SUMMARY

The present invention aims to at least solve the technical problem mentioned above in the related art to a certain extent. To this end, according to at least one preferred form, the present invention provides a novel handle which allows a user to conveniently unlock a refrigerator door from below.

Accordingly, in a first aspect, the present invention provides a handle.

The handle is detachably and at least partially slidably mounted to a cabinet structure, wherein the cabinet structure includes:

a refrigerator body provided with a storage chamber and an opening in communication with o the storage chamber;

a refrigerator door capable of closing the opening and rotatably connected to the refrigerator body, wherein the refrigerator door is provided with a lower bolt; and

a lower locking mechanism arranged on the refrigerator body, wherein the lower locking mechanism includes an opening fitting with the lower bolt;

wherein the handle is detachably and at least partially slidably mounted to the lower end of the refrigerator door, and comprises an opening which fits with the lower bolt and the opening of the lower locking mechanism;

when the refrigerator door is locked relative to the refrigerator body, the lower bolt is inserted into both an opening of the handle and the opening of the lower locking mechanism; and

o when the refrigerator door is unlocked, at least a part of the handle can slide outwardly relative to the refrigerator door, such that the lower bolt is upwardly moved out of the opening of the lower locking mechanism and the opening of the handle.

The handle of the present invention can be arranged at the lower end of the refrigerator door and can fit with the lower bolt and the lower locking mechanism, such that when the cabinet is s placed at a high position, the handle can be operated from below to conveniently unlock the refrigerator door (for example, by means of the handle arranged at the lower end of the refrigerator door, the lower bolt is upwardly moved out of the lower locking mechanism, the upward movement of the lower bolt causes a downward movement of an upper bolt to move the upper bolt out of an upper locking mechanism, so as to unlock the refrigerator door from below). Furthermore, since the handle of the present invention can be detachably mounted to the lower end of the refrigerator door, the user can mount and use or remove the handle of the present invention according to actual use conditions/requirements (e.g., when the cabinet is placed on the floor of the vehicle, the handle of the present invention may not be mounted/removed; when the cabinet is about to be placed at the high position, the handle of the present invention may be mounted to the lower end of the refrigerator door, which facilitates unlocking from below. and this endows the handle with flexibility in use).

In addition, the handle according to the first aspect of the present invention may further have o the following additional technical features.

According to an aspect of the present invention, the handle includes a grip part and a handle base, wherein the handle is detachably mounted to the lower end of the refrigerator door by means of the handle base of the handle, and the grip part of the handle is slidable relative to the refrigerator door and the handle base; and the grip part comprises an opening of the handle that fits with the s lower bolt and the opening of the lower locking mechanism.

According to an aspect of the present invention, when the handle is mounted to the lower end of the refrigerator door by means of the handle base of the handle, the lower locking mechanism is located between the grip part and the handle base.

According to an aspect of the present invention, the handle base has a first upper part and a o second lower part, wherein when the handle is mounted to the lower end of the refrigerator door by means of the handle base of the handle, the lower locking mechanism is located between the grip part and the second lower part of the handle base.

According to an aspect of the present invention, the handle base further includes a first snap fit portion and a second snap-fit portion located respectively on a first side portion and a second side portion of the handle base, and a first limiting wall and a second limiting wall; the grip part includes a first guide portion and a second guide portion which extend downwardly from the grip part; wherein when the grip part is mounted on the handle base, the first snap-fit portion and the second snap-fit portion are snap-fitted respectively to the first side portion and the second side portion, the first guide portion and the second guide portion are respectively in contact with the o first limiting wall and the second limiting wall, and a lower surface of the grip part is in contact with the first upper part of the handle base, and when the handle is mounted to the lower end of the refrigerator door by means of the handle base of the handle, an end surface of the lower end of the refrigerator door is in contact with the upper surface of the grip part.

According to an aspect of the present invention, the handle base comprises mounting posts for mounting springs for returning the grip part, wherein the springs are sleeved on the mounting posts; and the grip part has handle return portions which extend downwardly from the grip part and fit with the springs.

According to an aspect of the present invention, the handle base further includes a first compartment space and a second compartment space for arranging the two springs for returning the grip part, wherein the first compartment space is located between the first snap-fit portion and o the first limiting wall, the second compartment space is located between the second snap-fit portion and the second limiting wall, the mounting posts for mounting the springs are arranged in both of the first and second compartment spaces, and the springs are sleeved on the mounting posts; and the grip part has afirst handle return portion and a second handle return portion respectively fitting with the springs arranged in the first compartment space and the second compartment space.

According to an aspect of the present invention, the handle base has mounting seat portions at outer ends of the two side portions of the handle base, and the mounting seat portions have screw holes such that the handle is capable of being mounted to the lower end of the refrigerator door by means of screws fitting in the screw holes of the mounting seat portions and screw holes of the lower end of the refrigerator door.

o According to an aspect of the present invention, a wall enclosing the opening of the handle has a bevel fitting with a bevel of the lower bolt.

According to an aspect of the present invention, the first limiting wall and the second limiting wall have bars, wherein when the grip part is mounted on the handle base, the first guide portion and the second guide portion are respectively in contact with the bars on the first limiting wall and s the bars on the second limiting wall.

In a second aspect, the present invention provides a vehicle-mounted refrigerator, comprising a handle detachably mounted to the lower end of the refrigerator door of a cabinet structure of the vehicle-mounted refrigerator according to the first aspect of the present invention.

In a third aspect, the present invention provides a handle, wherein the handle is detachably o and at least partially slidably mounted to a cabinet structure, wherein the cabinet structure comprises: a refrigerator body provided with a storage chamber and an opening in communication with the storage chamber; a refrigerator door capable of closing the opening and rotatably connected to the refrigerator body, wherein the refrigerator door is provided with a lower bolt; and a lower locking mechanism arranged on the refrigerator body, wherein the lower locking mechanism comprises an opening fitting with the lower bolt; wherein the handle is detachably and at least partially slidably mounted to the lower end of the refrigerator door, and comprises an opening which fits with the lower bolt and the opening of the lower locking mechanism; when the refrigerator door is locked relative to the refrigerator body, the lower bolt is inserted into both an opening of the handle and the opening of the lower locking mechanism; and when the refrigerator o door is unlocked, at least a part of the handle can slide outwardly relative to the refrigerator door, such that the lower bolt is upwardly moved out of the opening of the lower locking mechanism and the opening of the handle.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed s to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

FIG. l a shows a schematic structural diagram of a vehicle-mounted refrigerator mounted with o a handle according to the present invention.

FIG. lb shows a partial schematic structural diagram of a lower part of the vehicle-mounted refrigerator mounted with the handle according to the present invention.

FIG. I shows a partial schematic structural diagram of the lower end of the vehicle-mounted refrigerator mounted with the handle according to the present invention.

FIG. 2a shows a perspective view of the handle according to the present invention.

FIG. 2b shows an exploded view of the handle according to the present invention.

FIG. 2c shows a schematic structural diagram of a handle base of the handle according to the present invention, which further illustrates that springs for partially returning the handle is arranged in the handle base.

FIG. 2d is a partial schematic structural diagram showing a grip part assembled with the handle base of the handle according to the present invention.

FIGS. 2e and 2f are schematic cross-sectional structural diagrams showing the grip part of the handle fitting with the springs for returning the grip part according to the present invention.

FIG. 3a shows a schematic cross-sectional view of a partial structure of the vehicle-mounted refrigerator mounted with the handle according to the present invention in a locked state.

FIG. 3b shows a schematic cross-sectional view of a partial structure of the vehicle-mounted refrigerator mounted with the handle according to the present invention in an unlocked state.

DETAILED DESCRIPTION

o The embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference signs refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the present invention.

As shown in FIGS. la-c, provided is a vehicle-mounted refrigerator 10 comprising a handle 20 according to a first aspect of the present invention, which can be detachably mounted to a lower end of a refrigerator door of a cabinet structure. The vehicle-mounted refrigerator is mainly used for storing items that need cryogenic storage in a vehicle, and the refrigerator door can be o conveniently unlocked from below by means of the handle 20 of the present invention when the refrigerator is about to be placed at a high position in the vehicle. Specifically, the cabinet structure of the vehicle-mounted refrigerator 10 comprises a refrigerator body 11 and a refrigerator door 12. The refrigerator body is provided with a storage chamber for storing items, the refrigerator body is provided with an opening in communication with the storage chamber, and the items are put in or taken out of the storage chamber through the opening. The refrigerator body 11 is further provided with a lower locking mechanism 13 and an upper locking mechanism (not shown). The opening can be closed by the refrigerator door 12, and the refrigerator door 12 is rotatably connected to the refrigerator body 11. The refrigerator door 12 is further provided with a lower bolt 14 (e.g., that shown in FIGS. 3a and 3b) and an upper bolt (not shown) which is in linkage with the lower bolt. The lower bolt 14 fits with the lower locking mechanism 13, and the upper bolt fits with the upper locking mechanism. When the vehicle-mounted refrigerator is about to be placed at the high position in the vehicle so that the user cannot/inconveniently access to and operate the high handle, the handle 20 according to the present invention can be mounted to the lower end of the refrigerator door 12 so as to provide the possibility of unlocking the refrigerator door from below as exemplarily shown in FIG. Ic.

The function and structure of the handle according to the present invention will be further described below with respect to an embodiment exemplarily shown in FIGS. 2a-3b.

Referring to FIGS. 2a-2e, the handle 20 according to the embodiment is provided as an assembly/a kit. Specifically, the handle 20 comprises a grip part 21, a handle base 22, and two o springs 23 for returning the grip part. The grip part 21 comprises an opening 211, first and second guide portions 212 extending downwardly from the grip part, and first and second handle return portions 213. The handle base 22 is generally in the form of a folded line, that is, the handle base has a first upper part 221 and a second lower part 222, and also has a first side portion 223 and a second side portion 224. Further, the handle base comprises first and second snap-fit portions 225 located respectively on the first side portion and the second side portion, first and second limiting walls 226, and first and second compartment spaces 227 located respectively between the first snap-fit portion and the first limiting wall and between the second snap-fit portion and the second limiting wall, wherein mounting posts 228 configured for mounting the springs 23 are arranged in the first and second compartment spaces 227. The handle 20 according to this embodiment is o assembled as an assembly/a kit by means of the following fits: the two springs 23 are placed respectively in the first and second compartment spaces 227 and sleeved on the mounting posts 228, and are then snap-fitted respectively to the first side portion 214 and the second side portion 215 of the grip part 21 by means of thefirst and second snap-fit portions 225, and thereafter, the first and second guide portions 212 are in contact with the first and second limiting walls 226 respectively, the first and second handle return portions 213 extend at least partially into the first and second compartment spaces 227 respectively and are in contact with the springs 23 arranged therein, and a lower surface of the grip part 21 is in contact with the first upper part 221.

When the vehicle-mounted refrigerator is about to be placed at the high position in the vehicle so that the user cannot/inconveniently access to and operate the high handle to unlock the o refrigerator door, for example, the handle can be mounted to the lower end of the refrigerator door 12 by means of the handle base 22 of the handle 20 before the vehicle-mounted refrigerator is placed at the high position. For example, with reference to FIG. I cin combination with FIGS. 2a and 2b, according to an optional implementation of the present invention, first and second mounting seat portions 229 can be arranged respectively at outer ends of the two side portions 223 and 224 of the handle base 22, that is, on outer sides of the first and second snap-fit portions 225. The mounting seat portions 229 may both have screw holes 2210 (e.g., each mounting seat portion may have two screw holes), and the handle 20 is conveniently, quickly and easily mounted to the lower end of the refrigerator door by aligning the screw holes 2210 to screw holes of the lower end of the refrigerator door 12 and then screwing screws into the holes, with an end surface of the lower end being in contact with an upper surface of the grip part 21.

When the refrigerator door 12 mounted with the handle 20 of the embodiment closes the o opening of the refrigerator body 11 and is locked relative to the refrigerator body 11, for example, with reference to FIG. 3a in combination with FIG. Ic, the lower locking mechanism 13 arranged in the refrigerator body 11 extends at least partially (e.g., a portion of the lower locking mechanism that has the opening 15) into a space between the grip part 21 and the second lower part 222 of the handle base 22; and the lower bolt 14 is inserted into both of the opening 211 of the grip part 21 s and the opening 15 of the lower locking mechanism 13. The upper bolt is inserted into the opening (not shown) of the upper locking mechanism arranged in the Cabinet.

When the refrigerator door 12 is unlocked from below by means of the handle 20 of the embodiment, for example, with reference to FIG. 3b in combination with FIG. 2f, the user operates the handle 20, that is, the user pulls the grip part 21 outwardly (since thefirst and second snap-fit o portions 225 are snap-fitted respectively to the first side portion 214 and the second side portion 215, the first and second guide portions 212 are respectively in contact with the first and second limiting walls 226, the lower surface of the grip part 21 is in contact with the first upper part, and an end surface of the lower end of the refrigerator door is in contact with the upper surface of the grip part 21, the grip part 21 can be held well/stably, and the grip part 21 can slide/move stably along the limiting walls relative to the handle base and the refrigerator door by means of the slidable contact fit between the guide portions of the grip part and the limiting walls of the handle base). During the outward sliding of the grip part 21, a bevel 216 formed on a wall of the grip part 21 that encloses the opening 211 is in contact fit with a bevel 16 on the lower bolt 14, such that the outward sliding of the grip part 21 causes an upward movement of the lower bolt 14, and finally, o the lower bolt 14 is moved out of the opening 15 of the lower locking mechanism 13 and the opening 211 of the grip part. Also, since the upward movement of the lower bolt 14 causes a downward movement of the upper bolt in linkage with the lower bolt, the upper bolt is moved out of the opening of the upper locking mechanism. In addition, as the grip part 21 slides, the first and second handle return portions 213 compress the springs 23 until the first and second handle return portions 213 are in contact with the mounting posts 228, and the grip part 21 stops sliding relative to the handle base 22. Then, the grip part 21 is pulled to open the refrigerator door 12 so as to expose the opening of the refrigerator body 11. After the refrigerator door 12 is opened, the user can release the handle 20, and the handle 20 can return under the action of the restoring of the springs 23 from a compressed state to its original state (i.e., the springback of the springs acts on the handle return portions 213 to cause the entire grip part 21 to return).

When it is not needed to place the vehicle-mounted refrigerator at the high position in the vehicle, for example, on a floor of the vehicle, the user can conveniently, quickly and easily o remove the handle 20 of this embodiment from the refrigerator door by unscrewing the screws from the screw holes.

The handle 20 according to the embodiment can be arranged at the lower end of the refrigerator door and can fit with the lower bolt and the lower locking mechanism, such that when the cabinet is placed at the high position, the handle can be operated from below to conveniently unlock the refrigerator door. Furthermore, since the handle 20 of the embodiment can also be detachably mounted to the lower end of the refrigerator door, the user can mount and use or remove the handle of the present invention according to actual use conditions/requirements (e.g., when the cabinet is placed on the floor of the vehicle, the handle of the present invention may not be mounted/removed; when the cabinet is about to be placed at the high position, the handle of the o present invention may be mounted to the lower end of the refrigerator door, which facilitates unlocking from below; and this endows the handle with flexibility in use).

Additionally or alternatively, as exemplarily shown in FIG. 2d, in the handle according to this embodiment, the first and second limiting walls 226 of the handle base 22 may have bars 2211. For example, each limiting wall may have two bars. In case of the bars provided, the first and second guide portions 212 of the grip part 21 are in contact with the bars in an assembled state of the handle. This changes the sliding-fit contact serving a guiding function between the guide portions and the limiting walls from surface-to-surface contact to point/line-to-surface contact, which further facilitates the sliding of the grip part relative to the handle base.

In the description of the present invention, it should be understood that the orientations or the o position relationship indicated by the terms such as "upper", "lower", "inner" and "outer" are based on the orientations or the position relationship shown in the accompanying drawings, which is only for ease of description of the present invention and for simplifying the description, rather than indicating or implying that the devices or elements referred to necessarily have a specific orientation structure and operation, and therefore cannot be construed as limiting the present invention.

Moreover, the terms "first" and "second" are merely used for the description purpose, and should not be construed as indicating or implying relative importance. Thus, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention, and those of ordinary skill in the art can make combinations, o changes, modifications, substitutes and variations to the above embodiments within the scope of the present invention.

Claims

1. A handle, wherein the handle is detachably and at least partially slidably mounted to a cabinet structure, wherein the cabinet structure comprises:

a refrigerator body provided with a storage chamber and an opening in communication with the storage chamber;

a lower locking mechanism arranged on the refrigerator body, wherein the lower locking mechanism comprises an opening fitting with the lower bolt;

o wherein the handle is detachably and at least partially slidably mounted to the lower end of the refrigerator door, and comprises an opening which fits with the lower bolt and the opening of the lower locking mechanism;

when the refrigerator door is unlocked, at least a part of the handle can slide outwardly relative to the refrigerator door, such that the lower bolt is upwardly moved out of the opening of the lower locking mechanism and the opening of the handle.

2. The handle according to claim 1, wherein the handle comprises a grip part and a handle base, wherein the handle is detachably mounted to the lower end of the refrigerator door by means of o the handle base of the handle, and the grip part of the handle is slidable relative to the refrigerator door and the handle base; and the grip part comprises an opening of the handle that fits with the lower bolt and the opening of the lower locking mechanism.

3. The handle according to claim 2, wherein when the handle is mounted to the lower end of the refrigerator door by means of the handle base of the handle, the lower locking mechanism is s located between the grip part and the handle base.

4. The handle according to claim 3, wherein the handle base has a first upper part and a second lower part, wherein when the handle is mounted to the lower end of the refrigerator door by means of the handle base of the handle, the lower locking mechanism is located between the grip part and the second lower part of the handle base.

5. The handle according to claim 4, wherein the handle base further comprises a first snap-fit portion and a second snap-fit portion located respectively on a first side portion and a second side portion of the handle base, and a first limiting wall and a second limiting wall; and the grip part comprises a first guide portion and a second guide portion which extend downwardly from the grip part; wherein when the grip part is mounted on the handle base, the first snap-fit portion and the second snap-fit portion are snap-fitted respectively to the first side portion and the second side portion, the first guide portion and the second guide portion are respectively in contact with the first limiting wall and the second limiting wall, and a lower surface of the grip part is in contact o with the first upper part of the handle base, and when the handle is mounted to the lower end of the refrigerator door by means of the handle base of the handle, an end surface of the lower end of the refrigerator door is in contact with the upper surface of the grip part.

6. The handle according to any one of claims 2-4,wherein the handle base comprises mounting posts for mounting springs for returning the grip part, wherein the springs are sleeved on the s mounting posts; and the grip part has handle return portions which extend downwardly from the grip part and fit with the springs.

7. The handle according to claim 5, wherein the handle base further comprises a first compartment space and a second compartment space for arranging the two springs for returning the grip part, wherein the first compartment space is located between the first snap-fit portion and o the first limiting wall, the second compartment space is located between the second snap-fit portion and the second limiting wall, the mounting posts for mounting the springs are arranged in both of the first and second compartment spaces, and the springs are sleeved on the mounting posts; and the grip part has afirst handle return portion and a second handle return portion respectively fitting with the springs arranged in the first compartment space and the second compartment space.

8. The handle according to any one of claims 2-5, wherein the handle base has mounting seat portions at outer ends of the two side portions of the handle base, and the mounting seat portions have screw holes such that the handle is capable of being mounted to the lower end of the refrigerator door by means of screws fitting in the screw holes of the mounting seat portions and screw holes of the lower end of the refrigerator door.

o 9. The handle according to any one of claims 1-5, wherein a wall enclosing the opening of the handle has a bevel fitting with a bevel of the lower bolt.

10. The handle according to claim 5, wherein the first limiting wall and the second limiting wall have bars, wherein when the grip part is mounted on the handle base, the first guide portion and the second guide portion are respectively in contact with the bars on the first limiting wall and the bars on the second limiting wall.

s 11. A vehicle-mounted refrigerator, comprising a handle according to any one of claims 1-10 detachably mounted to the lower end of the refrigerator door of a cabinet structure of the vehicle mounted refrigerator

0

11 2024264625

12

0

20 FIG. 1a FIG. 1a

0

I 12

20 FIG. 1b FIG. 1b

1/6 1/6

2024264625

850PL22

o o

O D O 13

FIG. 1c FIG. 1c

20

211

21

22

229 225

2210

212 225 229

213

FIG. 2a FIG. 2a

2/6 2/6

213

21

212 23

211 2024264625

229

225 212 228 2211 215

221 213 223 227

226 23 228 225

222

227

2210 224 229

FIG. 2b FIG. 2b

22

228 228

23 FIG. 2c FIG. 2c

3/6 3/6

214 2024264625

213 212

226 2211

FIG. 2d FIG. 2d

213 23 228

FIG. 2e FIG. 2e

4/6 4/6

2024264625

227 23 213 228 FIG. 2f FIG. 2f

21

211 13 216 15 14 22

FIG. 3a FIG. 3a

5/6 5/6

4

13 16 216 211 15 FIG. 3b FIG. 3b

6/6 6/6