Portable movable seat

Abstract

The invention relates to the field of furniture, in particular to a portable movable chair which comprises a wooden chair, a first elastic piece, a push block, a plug pin, a mounting block and the like. The wooden chair is provided with four chair legs; a first elastic piece is fixedly connected in each chair leg; the telescopic end of the first elastic piece is fixedly connected with a push block; a bolt is mounted on each chair leg; and a mounting block is connected in each cavity in a sliding manner. When a user sits on the chair, the chair is supported by the four chair legs, so that the sitting stability of the user is ensured; when no person sits, the chair legs are separated from the ground, and the spherical wheels are in contact with the ground but are locked and cannot move freely; when the chair needs to be moved, the spherical wheels can be unlocked only by slightly pressing the chair downwards by a user, so that the chair is convenient to move, and the problems that a solid wood chair is inconvenient to move and the chair which is provided with the walking wheels and is convenient to move is easy to randomly push are solved.

Description

Technical Field

[0001] The invention relates to the field of furniture, in particular to a portable mobile chair. Background Art

[0002] Solid wood chairs have become a popular choice in furniture design due to their natural beauty, environmental health, durability, and unique style. However, solid wood chairs are heavy, which makes them inconvenient to move. In addition, the chair legs rub against the ground during movement, causing great damage to the chair legs. Especially when moving on smooth floor tiles, the chair legs rub against the ground and make noise, which greatly affects the user's mood. Existing methods usually add walking wheel structures to the chair legs. When there are children or pets at home, the easy-to-move chairs are easily pushed at will, colliding with other furniture, causing the furniture to fall over, causing injuries to children or pets, and causing property losses.

[0003] At the same time, the addition of a walking wheel structure at the chair foot makes the overall solid wood chair look particularly abrupt and greatly affects the overall beauty of the solid wood chair. Summary of the invention

[0004] In order to overcome the shortcomings of solid wooden chairs that are inconvenient to move, the chair legs rubbing against the ground during movement, causing serious damage to the chair legs and making noise, and the added running wheels making it easy to be pushed at will, colliding with other furniture and destroying the overall aesthetics, the present invention provides a portable mobile chair.

[0005] The technical implementation scheme of the present invention is: a portable mobile chair, including a wooden chair; the wooden chair is provided with four chair legs; it also includes a first elastic member, a push block, a latch and a mounting block; a cavity is opened in each chair leg; a first elastic member is fixedly connected in each chair leg; the first elastic member is located in the corresponding cavity; a push block is fixedly connected to the telescopic end of the first elastic member; a locking ring is fixedly connected to the push block; a latch is installed on each chair leg; the latch is adapted to the locking ring; a mounting block is slidably connected in each cavity; a spherical wheel is installed on the mounting block.

[0006] More preferably, the edges around the lower side of the chair foot are inclined.

[0007] More preferably, it also includes a mounting ring; a mounting ring is slidably connected in each cavity; the inner diameter of the mounting ring is the same as the outer diameter of the mounting block; the outer diameter of the mounting ring is the same as the diameter of the push block; a number of connecting rods are fixedly connected to the mounting ring; a clamping block is fixedly connected to the lower side of each connecting rod; the side of the clamping block facing the mounting block is set to an arc surface with the same shape as the spherical wheel; a number of second elastic parts are fixedly connected to the lower side of the mounting ring.

[0008] More preferably, an edge of one end of the latch pin facing the lock ring is provided with a bevel.

[0009] More preferably, a protection unit is also included, which includes a sliding rod and a protective cover; a number of sliding grooves are provided inside each chair leg; a number of sliding rods are slidably connected inside each chair leg; each sliding rod moves in a corresponding sliding groove; a connecting block is fixedly connected to the lower side of each sliding rod; each chair leg is provided with a receiving groove adapted to the connecting block; each chair leg is provided with a storage groove; all the connecting blocks corresponding to each chair leg are commonly fixedly connected to a protective cover; the protective cover can be slidably stored in an adjacent storage groove.

[0010] More preferably, the protection unit further comprises bristles; a plurality of bristles are arranged on the lower side of each protection cover.

[0011] More preferably, the upper side of the connecting block is tapered.

[0012] More preferably, the protective cover is made of metal material with imitation wood paint on the surface.

[0013] More preferably, a self-cleaning unit is also included, which includes a fixed block, a sealing piece and a flip block; a plurality of through holes are opened on the push block; the connecting rod is hollow; an entrance is opened on the connecting rod; the entrance is connected to the adjacent through hole; an outlet is opened at the lower part of the connecting rod; a plurality of fixed blocks are fixedly connected to the push block, each of which is movably connected to a sealing piece through a torsion spring; the sealing piece blocks the upper side of the through hole; a plurality of limiting grooves are opened in the chair leg; the sealing piece extends into the limiting groove; a flip block is connected to the lower side of each protective cover; the bristles are fixedly connected to the flip block.

[0014] More preferably, the portion where the blocking piece seals the through hole is made of rubber.

[0015] Beneficial effects: The invention supports the user through four chair legs when the user is sitting, ensuring the stability of the user when sitting; when no one is sitting, the chair legs are separated from the ground, and the spherical wheels are in contact with the ground but are locked and cannot be moved at will; when it is necessary to move, the user only needs to slightly press the chair down to unlock the spherical wheels, and then move conveniently, solving the problem that solid wooden chairs are inconvenient to move, while chairs installed with walking wheels for easy movement are easy to be pushed at will; at the same time, when the wooden chair does not need to be moved frequently, the push block is locked by inserting the pin into the lock ring, and the push block, the installation block and the spherical wheels are retracted in the cavity to ensure the aesthetics of the chair; When the chair is pushed to move, the protective cover blocks the debris encountered on the outside and prevents it from contacting the parts inside, thereby preventing the debris from adhering to the parts inside and affecting the movement of the parts; The bristles are used to close the distance between the protective cover and the ground, so that a small amount of dust and impurities cannot be blocked by the protective cover. At the same time, the lower side of the bristles is in contact with the ground, and the friction resistance caused by the flexible bristles is small, which does not affect the movement of the chair legs. The air in the cavity is compressed by squeezing the push block. When the blocking piece releases the blocking of the through hole, the compressed air quickly passes through the through hole and enters the connecting rod through each entrance, and finally blows out through the outlet to the mounting block and the spherical wheel to blow off the debris on the surface thereof, and finally blows each flip block to flip and open outside the protective cover to bring the debris out of the protective cover, thereby preventing impurities from breaking through the interception of the bristles and entering the protective cover, thereby affecting the rolling of the spherical wheel and hindering the movement of the chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the portable mobile seat of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the chair leg and the mounting block combination of the present invention; Figure 3 is a cross-sectional view of a chair leg of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the spherical wheel of the present invention in contact with the ground; Figure 5 It is a three-dimensional structural schematic diagram of the spherical wheel of the present invention in an unlocked state; Figure 6 It is a three-dimensional structural schematic diagram of the chair leg and protective cover combination of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the protection unit of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the protective cover of the present invention in a stored state; Fig. 9 is a cross-sectional view of the protective cover of the present invention; Fig.10 An exploded view of the push block and mounting ring combination of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the connecting rod and the clamping block combination of the present invention; Fig.12 For the present invention Figure 8 The enlarged view of point A in the middle; Fig.13 It is a schematic diagram of the three-dimensional structure of the blocking piece of the present invention in an open state.

[0017] Among them, the above-mentioned drawings include the following figure marks: 1-chair foot, 21-latch, 1001-cavity, 1002-sliding groove, 1003-storage groove, 1004-limiting groove, 2-push block, 2001-locking ring, 2002-through hole, 3-mounting block, 3001-spherical wheel, 4-mounting ring, 4001-connecting rod, 4002-block, 41-entrance, 42-exit, 101-first elastic member, 102-second elastic member, 201-sliding rod, 20101-connecting block, 202-protective cover, 203-brush, 301-fixed block, 302-blocking plate, 1a-ground, 1111-wooden chair. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0019] Example 1 like Figure 1-Figure 5 and Figure 7 As shown, a portable mobile chair includes a wooden chair 1111; the wooden chair 1111 is provided with four chair legs 1; It also includes a first elastic member 101, a push block 2, a latch 21 and a mounting block 3; a cavity 1001 is provided in each chair leg 1; a first elastic member 101 is fixedly connected in each chair leg 1; the first elastic member 101 is a spring; the first elastic member 101 is located in the corresponding cavity 1001; the telescopic end of the first elastic member 101 is fixedly connected to the push block 2; a locking ring 2001 is fixedly connected to the push block 2; a latch 21 is installed on each chair leg 1; the latch 21 is adapted to the locking ring 2001; a mounting block 3 is slidably connected in each cavity 1001; a spherical wheel 3001 is installed on the lower side of the mounting block 3.

[0020] The edges around the lower side of the chair leg 1 are inclined, and when the chair leg 1 moves downward and encounters debris, the debris can be squeezed outward.

[0021] It also includes a mounting ring 4; a mounting ring 4 is slidably connected in each cavity 1001; the inner diameter of the mounting ring 4 is the same as the outer diameter of the mounting block 3; the outer diameter of the mounting ring 4 is the same as the diameter of the push block 2; the mounting ring 4 is slidably connected to the mounting block 3; the upper sides of the mounting block 3 and the mounting ring 4 are in contact with the lower side of the push block 2; four connecting rods 4001 are fixedly connected to the mounting ring 4 in an annular array; a clamping block 4002 is fixedly connected to the lower side of each connecting rod 4001; the side of the clamping block 4002 facing the mounting block 3 is set to an arc surface of the same shape as the spherical wheel 3001; four second elastic members 102 are fixedly connected to the lower side of the mounting ring 4 in an annular array; the second elastic member 102 is a spring.

[0022] The edge of one end of the latch pin 21 facing the lock ring 2001 is provided with an oblique angle to facilitate insertion into the lock ring 2001 for locking.

[0023] When a user sits on the chair of the present invention, the four chair legs 1 move downward and contact the ground 1a, the mounting block 3 and the spherical wheel 3001 are retracted in the cavity 1001, and then the mounting block 3 presses the push block 2 upward, and the push block 2 presses the first elastic member 101 to compress it. At the same time, the lower sides of the four chair legs 1 are in firm contact with the ground 1a, ensuring the stability of the present invention when the user sits.

[0024] When the wooden chair 1111 needs to be moved, no one is sitting on the chair and the chair is in an unloaded state. The user pulls out the pin 21 to disengage it from the lock ring 2001, thereby releasing the lock on the push block 2. The first elastic member 101 gradually extends, and the lower side of the spherical wheel 3001 contacts the ground 1a. Then the first elastic member 101 applies a downward extrusion force to the push block 2. The push block 2 squeezes the mounting block 3, and the mounting block 3 squeezes the spherical wheel 3001. The spherical wheel 3001 and the ground 1a form a reaction force, and the chair is lifted up as a whole through the first elastic member 101. Each chair leg 1 is separated from the ground 1a. At this time, the spherical wheel 3001 contacts the ground 1a, and the user can push the chair and move it through the spherical wheel 3001 to achieve convenient movement of the chair.

[0025] When the wooden chair 1111 does not need to be moved frequently, the user places a heavy object on the wooden chair 1111 so that the chair leg 1 contacts the ground 1a, and then pushes the pin 21 into the chair leg 1 so that the pin 21 is stuck in the locking ring 2001, locking the push block 2, so that the first elasticity is in a compressed state and cannot stretch, keeping the push block 2, the mounting block 3 and the spherical wheel 3001 retracted in the cavity 1001, without affecting the aesthetics of the wooden chair 1111.

[0026] When there are children or pets at home, the wooden chair 1111 is in a movable state with the mounting block 3 extended and the chair legs 1 separated from the ground 1a, the wooden chair 1111 is easily pushed at will and collides with other furniture, causing the furniture to fall over, causing injuries to children or pets and causing property losses; when no one is sitting on the chair, the chair legs 1 are separated from the ground 1a and are in a movable state, at this time, the mounting ring 4 is in a position such as the interaction force of the first elastic member 101 and the second elastic member 102 Figure 4At the height shown, the upper side of the clamping block 4002 is tightly against the lower side of the mounting block 3, and the arc-shaped surface of each clamping block 4002 contacts the spherical wheel 3001 in the middle, locking the spherical wheel 3001, so that the spherical wheel 3001 cannot roll, and thus the chair cannot be moved. When the user needs to move the chair, he slightly presses the chair downward so that the chair leg 1 moves downward a short distance. At this time, the bottom of the spherical wheel 3001 contacts the ground 1a, and the heights of the push block 2, the mounting block 3 and the spherical wheel 3001 remain unchanged. Only the first elastic member 101 is slightly compressed, and the second elastic member 102 is in the extension limit position, and the chair leg 1 moves downward relative to the mounting block 3. At this time, the contact force between the lower side of the second elastic member 102 and the chair leg 1 gradually decreases, so that the mounting ring 4 slides downward with the second elastic member 102 under its own weight, thereby pushing the connecting rod 4001 and the clamping block 4002 to slide downward. Figure 5 As shown, after each block 4002 moves downward, the inner arc surface of the block 4002 is currently at a height that is incompatible with the outer edge of the spherical wheel 3001, thereby losing contact with the spherical wheel 3001, releasing the lock on the spherical wheel 3001, and then the user can move the chair through the spherical wheel 3001 to walk on the ground 1a, preventing the easy-to-move wooden chair 1111 from being easily pushed and colliding with other furniture, causing the furniture to tip over, causing injuries to children or pets and causing property losses.

[0027] In summary, the present invention supports the user through four chair legs 1 when the user is sitting, ensuring the stability of the user when sitting; when no one is sitting, the chair legs 1 are separated from the ground 1a, and the spherical wheels 3001 are in contact with the ground 1a but are locked and cannot move at will; when it is necessary to move, the user only needs to press the chair down slightly to unlock the spherical wheels 3001, and then move conveniently, thereby solving the problem that solid wooden chairs 1111 are inconvenient to move, while chairs equipped with walking wheels for easy movement are easily pushed at will; at the same time, the above-mentioned structure is in a telescopic form, and the overall volume is smaller than the chair legs 1, thereby ensuring the aesthetics of the chair.

[0028] Example 2 On the basis of Example 1, Figure 6-Figure 9 As shown, a protection unit is also included, which includes a slide bar 201 and a protection cover 202; four sliding grooves 1002 distributed in a rectangular shape are opened on the lower side of each chair leg 1; four slide bars 201 are slidably connected to the lower side of each chair leg 1; each slide bar 201 moves in a corresponding sliding groove 1002; a connecting block 20101 is welded on the lower side of each slide bar 201 away from the chair leg 1; a receiving groove adapted to the connecting block 20101 is opened on the lower side of each chair leg 1; a storage groove 1003 is opened on the lower side of each chair leg 1; all the connecting blocks 20101 corresponding to each chair leg 1 are welded with a protection cover 202; the protection cover 202 can be slidably stored in the adjacent storage groove 1003.

[0029] The protection unit also includes bristles 203 ; a plurality of bristles 203 are arranged on the lower side of each protection cover 202 .

[0030] The upper side of the connecting block 20101 is tapered to prevent dust from remaining on the upper side of the connecting block 20101.

[0031] The protective cover 202 is made of metal material with imitation wood paint on the surface, which ensures the service life and improves the aesthetics.

[0032] When the user moves the chair, there are debris on the walking path of the spherical wheel 3001. When the spherical wheel 3001 rolls over it, it is easy to adhere to the surface, affecting the rolling of the spherical wheel 3001. At the same time, the airflow generated when the debris is moved is carried by the airflow to adhere to the surface of the mounting block 3, affecting the contraction of the mounting block 3. In this regard, when the chair leg 1 is in a suspended state of movement, such as Figure 7 As shown, the protective cover 202, due to its own weight, is located at the lower side of the chair leg 1, and wraps the mounting block 3, the spherical wheel 3001 and the clamping block 4002 inside. When the chair is pushed to move, the protective cover 202 blocks the encountered debris on the outside and does not contact the parts inside, thereby preventing the debris from adhering to the inner parts and affecting the movement of the parts.

[0033] In order to avoid friction caused by the lower side of the protective cover 202 contacting the ground 1a, when the protective cover 202 is in the lower extreme position, there is still a small distance from the ground 1a. When moving, a small amount of dust and impurities cannot be blocked by the protective cover 202, and then the bristles 203 arranged on the lower side of the protective cover 202 are used to close this distance to avoid a small amount of dust and impurities from being blocked by the protective cover 202. At the same time, the lower side of the bristles 203 is in contact with the ground 1a, and the friction resistance brought by the flexible bristles 203 is small, which does not affect the movement of the chair leg 1.

[0034] When the lower side of the chair leg 1 contacts the ground 1a, the chair leg 1 moves downward and contacts the ground 1a, the slide bar 201 gradually retracts into the sliding groove 1002, and the protective cover 202 is stored in the storage groove 1003, thereby ensuring that the protective cover 202 does not affect the downward movement of the chair leg 1 when the user sits on the chair.

[0035] Example 3 On the basis of Example 2, Figure 7-Figure 8 and Figure 10-13As shown, it also includes a self-cleaning unit, which includes a fixed block 301, a blocking piece 302 and a flip block; four through holes 2002 are opened on the push block 2; the connecting rod 4001 is hollow; an entrance 41 is opened on the upper side of the connecting rod 4001; the entrance 41 is connected to the adjacent through hole 2002; an outlet 42 is opened on the lower part of the connecting rod 4001 facing the spherical wheel 3001; four fixed blocks 301 are fixedly connected to the push block 2, and each fixed block 301 is hinged with a blocking piece 302 through a torsion spring; the blocking piece 302 blocks the upper side of the through hole 2002; four limiting grooves 1004 are opened in the chair leg 1; the blocking piece 302 extends into the limiting groove 1004; each protective cover 202 is rotatably connected to a flip block on the lower side through a torsion spring; the flip block only flips toward the outside of the protective cover 202; the bristles 203 are fixedly connected to the flip block.

[0036] The sealing piece 302 that seals the through hole 2002 is made of rubber material to ensure the sealing performance when sealing the through hole 2002.

[0037] When the chair is not moved for a long time, a lot of impurities and dust accumulate around the chair legs 1. In this case, if the chair is moved, it is inevitable that some impurities will break through the interception of the bristles 203 and enter the protective cover 202. Similarly, during the normal movement of the chair, small impurities with large mass will easily break through the interception of the bristles 203 and enter the protective cover 202, thereby affecting the rolling of the spherical wheel 3001 and hindering the movement of the chair.

[0038] When the wooden chair 1111 is subjected to pressure and the push block 2 is retracted into the chair leg 1, the push block 2 moves upward relatively in the cavity 1001, and the blocking piece 302 is in a horizontal state to block the through hole 2002. As the push block 2 gradually moves upward, the push block 2 continuously compresses the air in the cavity 1001. When the push block 2 moves upward and the portion of the blocking piece 302 extending in the limiting groove 1004 contacts the inclined surface on the upper side of the limiting groove 1004, the blocking piece 302 flips on the fixed block 301, and then changes from the state of horizontally blocking the fixed block 301 to the state of horizontally blocking the fixed block 301. Fig.13 As shown in the tilted state, the blocking piece 302 releases the blocking of the through hole 2002, and the compressed air in the cavity 1001 is released, quickly passes through the through hole 2002 and enters the connecting rod 4001 through each entrance 41, and is finally blown out through the outlet 42, applying pressure to the mounting block 3, the spherical wheel 3001 and the inside of the protective cover 202, so that the debris in the mounting block 3 and the spherical wheel 3001 is blown off, and at the same time, the wind pressure inside the protective cover 202 pushes each flip block to flip and open to the outside of the protective cover 202, and then the wind drives the debris in the protective cover 202 to be blown out, and the debris in the protective cover 202 is removed, and the inside of the protective cover 202 is cleaned; it is prevented that impurities will break through the interception of the bristles 203 and enter the protective cover 202, thereby affecting the rolling of the spherical wheel 3001 and hindering the movement of the chair.

[0039] It should be understood that the blocking piece 302 flips over before the chair leg 1 contacts the ground 1a, and the air in the cavity 1001 is in a compressed state. When the blocking piece 302 releases the blockage of the through hole 2002, the compressed air rushes out quickly, completing the blowing and cleaning operation before the chair leg 1 contacts the ground 1a.

[0040] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having benefit of this disclosure will appreciate that various other embodiments can be devised without departing from the scope of the present invention. Accordingly, the scope of the present invention should be limited only by the claims appended hereto.

Claims

1. A portable mobile chair, comprising a wooden chair (1111); the wooden chair (1111) is provided with four chair legs (1); the characteristics are: The chair leg (1) further comprises a first elastic member (101), a push block (2), a latch (21) and a mounting block (3); each chair leg (1) is provided with a cavity (1001); each chair leg (1) is fixedly connected to a first elastic member (101); the first elastic member (101) is located in the corresponding cavity (1001); the telescopic end of the first elastic member (101) is fixedly connected to a push block (2); a locking ring (2001) is fixedly connected to the push block (2); a latch (21) is mounted on each chair leg (1); the latch (21) is matched with the locking ring (2001); each cavity (1001) is slidably connected to a mounting block (3); a spherical wheel (3001) is mounted on the mounting block (3).

2. A portable mobile chair according to claim 1, characterized in that: The edges around the lower side of the chair leg (1) are inclined.

3. A portable mobile chair according to claim 2, characterized in that: It also comprises a mounting ring (4); each cavity (1001) is slidably connected to a mounting ring (4); the inner diameter of the mounting ring (4) is the same as the outer diameter of the mounting block (3); the outer diameter of the mounting ring (4) is the same as the diameter of the push block (2); a plurality of connecting rods (4001) are fixedly connected to the mounting ring (4); a clamping block (4002) is fixedly connected to the lower side of each connecting rod (4001); a side of the clamping block (4002) facing the mounting block (3) is arranged as an arc surface with the same shape as the spherical wheel (3001); and a plurality of second elastic members (102) are fixedly connected to the lower side of the mounting ring (4).

4. A portable mobile chair according to claim 1, characterized in that: An edge of one end of the latch pin (21) facing the lock ring (2001) is provided with a bevel.

5. A portable mobile chair according to claim 4, characterized in that: The chair foot (1) further comprises a protection unit, the protection unit comprising a slide bar (201) and a protection cover (202); each chair foot (1) is provided with a plurality of slide grooves (1002); each chair foot (1) is slidably connected to a plurality of slide bars (201); each slide bar (201) moves in a corresponding slide groove (1002); a connection block (20101) is fixedly connected to the lower side of each slide bar (201); each chair foot (1) is provided with a receiving groove adapted to the connection block (20101); each chair foot (1) is provided with a storage groove (1003); all the connection blocks (20101) corresponding to each chair foot (1) are commonly fixedly connected to a protection cover (202); the protection cover (202) can be slidably stored in an adjacent storage groove (1003).

6. A portable mobile chair according to claim 5, characterized in that: The protection unit also includes bristles (203); a plurality of bristles (203) are arranged on the lower side of each protection cover (202).

7. A portable mobile chair according to claim 5, characterized in that: The upper side of the connecting block (20101) is tapered.

8. A portable mobile chair according to claim 6, characterized in that: The protective cover (202) is made of metal with a wood-like paint on the surface.

9. A portable mobile chair according to claim 8, characterized in that: The chair also comprises a self-cleaning unit, which comprises a fixed block (301), a blocking piece (302) and a flip block; a plurality of through holes (2002) are provided on the push block (2); the connecting rod (4001) is in a hollow state; an inlet (41) is provided on the connecting rod (4001); the inlet (41) is communicated with an adjacent through hole (2002); an outlet (42) is provided at the lower portion of the connecting rod (4001); a plurality of fixed blocks (301) are fixedly connected to the push block (2); each fixed block (301) is movably connected to a blocking piece (302) via a torsion spring; the blocking piece (302) blocks the upper side of the through hole (2002); a plurality of limiting grooves (1004) are provided in the chair leg (1); the blocking piece (302) extends into the limiting groove (1004); a flip block is connected to the lower side of each protective cover (202); and the bristles (203) are fixedly connected to the flip block.

10. A portable mobile chair according to claim 9, characterized in that: The sealing piece (302) is made of rubber at the location where it seals the through hole (2002).

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