CN218472783U - Charging device and aerosol generating equipment - Google Patents

Abstract

The utility model is suitable for an electron device technical field that charges provides a charging device and aerosol emergence equipment, its charging device, include: a housing having a receiving cavity therein; the charging assembly is embedded in the accommodating cavity and is ejected out of the accommodating cavity or accommodated in the accommodating cavity under the action of external force; the sliding seat structure is arranged on the charging assembly, and a sliding rail is arranged on the sliding seat structure; the pull rod is connected with the sliding seat structure in a sliding manner so as to slide along the sliding rail under the action of external force; and the charging assembly is fixedly connected with the charging assembly so as to drive the charging assembly to pop up or store the elastic structure. Through pressing this subassembly that charges, drive this pull rod and slide on the slide rail to drive this subassembly that charges through elastic construction and pop out or accomodate to holding the chamber, make its appearance pleasing to the eye succinct, and can reach dustproof and waterproof's effect, improve its security and life.

Description

Charging device and aerosol generating equipment

Technical Field

The utility model belongs to the technical field of the electron device charges, especially, relate to a charging device and aerosol generating equipment.

Background

Along with the improvement of living standard, more and more people begin to pay attention to healthy, and under this prerequisite again, aerosol generating device takes place to produce in charge, and present aerosol generating device is for easy carrying and use, can attach to have the function of charging usually, promptly, through set up charge-discharge battery in its inside to charge for it through outside power supply subassembly, in order to satisfy aerosol generating device's daily work.

Therefore, a charging interface is generally required to be arranged on a shell of the aerosol generating device so as to be connected with an external power supply assembly in a charging mode, but the charging interface is exposed on the shell for a long time, so that the overall aesthetic property of the aerosol equipment is affected, the aerosol equipment is easily affected by moisture and dust, the use safety of the aerosol equipment is reduced, and the service life of the aerosol equipment is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a charging device and aerosol generating device aims at solving prior art in the charging device expose, influence whole aesthetic property and life, and the poor problem of security.

The utility model discloses a realize like this, a charging device, include:

a housing having a receiving cavity therein;

the charging assembly is embedded in the accommodating cavity and is popped out of the accommodating cavity or is accommodated in the accommodating cavity under the action of external force;

the sliding seat structure is arranged on the charging assembly, and a sliding rail is arranged on the sliding seat structure;

the pull rod is connected with the sliding seat structure in a sliding manner so as to slide along the sliding rail under the action of external force;

and the charging assembly is fixedly connected to drive the charging assembly to pop up or store the elastic structure.

In one embodiment, one end of the pull rod is fixedly assembled with the end of the shell, and the other end of the pull rod is connected with the slide rail in a sliding manner.

In one embodiment, one end of the elastic structure is fixedly assembled with the housing, and the other end of the elastic structure is fixedly assembled with the charging assembly.

In one embodiment, the charging assembly includes:

the charging connector is fixedly assembled on the bottom cover;

the sliding seat structures comprise two sliding seat structures which are respectively and oppositely arranged on the two side walls of the bottom cover.

In one embodiment, the charging device includes:

and the flip structure is movably connected with the shell to close or open the shell.

In an embodiment, a free end of the flip structure is provided with a hook structure, the housing is provided with a slot matched with the hook structure, and when the flip structure and the housing are closed, the hook structure is clamped with the slot.

In an embodiment, the hook structure is provided with a first groove, the slot is provided with a second groove, the second groove is provided with an elastic member, a free end of the elastic member extends out of the second groove, and when the flip structure and the housing are closed, the free end of the elastic member is embedded in the first groove.

In one embodiment, the housing is provided with a fixing member, and the flip structure is provided with a sliding groove for the fixing member to slide.

In an embodiment of the present invention, there is provided an aerosol generating apparatus, including:

the charging device as described above; and

and the aerosol generating equipment body is fixedly assembled with the charging device.

In one embodiment, the housing is provided with an air inlet hole, and when the flip structure is closed with the housing, the air inlet hole is sealed by the flip structure.

The embodiment of the utility model provides an in, provide a charging device and aerosol emergence equipment, its charging device, include: a housing having a receiving cavity therein; the charging assembly is embedded in the accommodating cavity and is ejected out of the accommodating cavity or accommodated in the accommodating cavity under the action of external force; the sliding seat structure is arranged on the charging assembly, and a sliding rail is arranged on the sliding seat structure; the pull rod is connected with the sliding seat structure in a sliding manner so as to slide along the sliding rail under the action of external force; and the charging assembly is fixedly connected with the charging assembly so as to drive the charging assembly to pop up or store the elastic structure. The utility model discloses in, when not using, this charging assembly can accomodate in holding the chamber, when using, press this charging assembly, this moment the pull rod can slide along the guide rail, and this charging assembly can pop out this and accomodate the chamber under the pulling of elastic construction, can charge this moment, after the completion of charging, can press this charging assembly once more, this moment, this pull rod can slide along this guide rail, and this charging assembly can accomodate to this and accomodate in the chamber under the pulling of this elastic construction, thereby hide charging assembly, make its appearance pleasing to the eye succinct, and can reach dustproof and waterproof effect, improve its security and life.

Drawings

Fig. 1 is an exploded view of an aerosol generating device according to an embodiment of the present invention;

fig. 2 is a first schematic structural diagram of a charging device according to an embodiment of the present invention in a hidden state;

fig. 3 is a schematic structural diagram of a charging device in a hidden state according to an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of a charging device in an ejection state according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a charging device in an ejection state according to an embodiment of the present invention;

fig. 6 is a first schematic structural diagram of a sliding seat structure according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a sliding seat structure according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a fixing member according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an elastic member according to an embodiment of the present invention;

fig. 10 is a schematic view of an overall structure of an aerosol generating device according to an embodiment of the present invention;

wherein, 1, a shell; 2. a flip structure; 3. a charging assembly; 4. a sliding seat structure; 5. a pull rod; 6. an elastic structure; 7. an elastic member; 8. a fixing member; 9. a seal ring; 11. a card slot; 111. a second groove; 12. An air inlet; 21. a hook structure; 211. a first groove; 22. a sliding groove; 31. a bottom cover; 32. a charging interface; 41. a slide rail; 411. a first step; 412. a second step; 71. a spring; 72. a spherical structure; charging device 100, aerosol generating device body 200.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides an in, provide a charging device and aerosol emergence equipment, its charging device, include: a housing 1 having a receiving chamber therein; the charging assembly 3 is embedded in the accommodating cavity, and is popped out of the accommodating cavity or is accommodated in the accommodating cavity under the action of external force; the sliding seat structure 4 is arranged on the charging assembly 3, and a sliding rail 41 is arranged on the sliding seat structure 4; the pull rod 5 is connected with the sliding seat structure 4 in a sliding manner so as to slide along the sliding rail 41 under the action of external force; and the charging assembly 3 is fixedly connected with the charging assembly 3 so as to drive the charging assembly 3 to pop up or store the elastic structure 6. The embodiment of the utility model provides an in, when not using, this charging assembly can be accomodate and hold the chamber, when using, can press this charging assembly, this moment pull rod can slide along the guide rail, and this charging assembly can pop out this chamber of accomodating under elastic construction's pulling, can charge this moment, after the completion of charging, can press this charging assembly once more, this moment, this pull rod can slide along this guide rail, and this charging assembly can accomodate to this chamber of accomodating under this elastic construction's pulling, thereby hide the charging assembly, make its appearance pleasing to the eye succinct, and can reach dustproof and waterproof effect, improve its security and life.

In the embodiment of the present invention, the charging assembly 3 includes: the bottom cover 31 and the interface 32 that charges that fixedly assembled on the bottom cover 31, this interface 32 that charges sets up in the one side that is close to this open end that holds the chamber, when carrying out the operation of charging, through pressing this subassembly 3 that charges for this interface 32 that charges pops out and holds the chamber, and this interface 32 that charges accessible charging circuit is connected with rechargeable battery to accessible data line is connected with outside charging source, thereby charges for rechargeable battery through outside charging source.

In the embodiment of the present invention, the charging interface 32 can also charge the external device, and the charging device 100 is used as a charger.

Further, the charging assembly 3 may further include a plurality of charging ports 32, for example, a first charging port and a second charging port, the first charging port may be connected to an external power source to charge the charging device, and the second charging port may be connected to an external device to charge the external device.

The bottom cover 31 and the charging interface 32 may be integrally formed.

The charging interface may be a USB interface, and the USB interface may be connected to other terminal devices, such as a computer, for data transmission and parameter modification, besides charging.

In the embodiment of the present invention, the sliding seat structure 4 may include two sliding seat structures, and the two sliding seat structures are respectively and oppositely disposed on the two side walls of the bottom cover 31. The two pull rods 5 can also be comprised and are respectively connected with the sliding seat structure 4 in a sliding manner. And two elastic structures 6 are respectively and oppositely arranged on each side wall of the bottom cover 31 so as to pull the charging assembly 3.

In the embodiment of the present invention, one end of the pull rod 5 is fixedly assembled with the housing 1, and the other end of the pull rod 5 is slidably connected to the slide rail 41. One end of the elastic structure 6 is fixedly assembled with the shell 1, and the other end of the elastic structure 6 is fixedly assembled with the charging assembly 3. When the charging assembly 3 is accommodated in the accommodating cavity, as shown in fig. 3, the elastic structure 6 is in a stretching state, and when the charging assembly 3 is pressed, as shown in fig. 5, the pull rod 5 can slide to the preset position along the slide rail 41 in a single direction, the elastic structure 6 can drive the charging assembly 3 to pop out of the accommodating cavity, at this time, the elastic structure 6 is compressed to a certain extent relative to the stretching state, so that the stretching range is reduced, but the pull rod 5 is still in the stretching state or in a critical state, so that the pull rod 5 can be fixed at the preset position, and when the charging assembly 3 is used and then the charging assembly 3 can be pressed again, at this time, the pull rod 5 can slide to an original position along the slide rail 41 in a single direction, and the elastic structure 6 can drive the charging assembly 3 to be accommodated in the accommodating cavity, thereby realizing the popping out and hiding of the charging assembly.

Wherein, the pull rod 5 and the shell 1 can be directly fixedly connected or indirectly fixedly connected together.

Wherein, the elastic structure 6 can be a spring structure.

In the embodiment of the present invention, the guide rail 41 disposed on the sliding seat structure 4 may include vertexes A1, A2, A3, A4 and A5, when the charging assembly 3 is in the storage state, the pull rod 5 is at the vertex A3, when pressed for the first time, the pull rod 5 slides along the trajectory of A3-A2-A1 until the pull rod 5 slides to A1, at this time, the charging assembly 3 may pop up under the pulling of the elastic structure 6, when pressed for the second time, the pull rod 5 slides along the trajectory of A1-A5-A4-A3, at this time, the pull rod 5 slides to the original vertex A3, and at this time, the charging assembly 3 may be stored under the pulling of the elastic structure 6.

In the embodiment of the present invention, the guide rail 41 is provided with a first step 411 and a second step 412, specifically, the guide rail 41 includes a first fixed point A6 and a second fixed point A7, the first fixed point A6 is disposed between the movement tracks of the A1 and the A2, when the charging assembly 3 is stored, the pull rod 5 starts to operate from the vertex A1, and has two movement tracks, i.e. A1-A2 and A1-A5, when the pull rod 5 operates to the first fixed point A6, it is stopped by the first step 411, at this time, the pull rod 5 can only operate towards the direction of the A5, so as to realize the movement track of the A1-A5-A4-A3. The second fixed point A7 is arranged between the movement tracks of the A4 and the A5, when the charging assembly 3 pops up, the pull rod 5 starts to operate from the fixed point A3, and since the pull rod 5 has two movement tracks starting from the A3, namely, A3-A2 and A3-A4, at this time, the second step 412 is arranged between the movement tracks of the A4 and the A5, the pull rod 5 is blocked and cannot continue to operate, so that the pull rod 5 can only operate along the movement track of the A3-A2-A1, thereby realizing the one-way sliding of the pull rod 5, achieving a smoother sliding effect, and facilitating the popping up and hiding of the charging assembly 3.

In the embodiment of the present invention, a third step 413 and a fourth step 414 are further disposed in the guide rail 41, the third step 413 is disposed between the vertex A3 and the vertex A4, the fourth step 414 is disposed between the vertex A3 and the vertex A2, and the height of the fourth step 414 can be higher than the height of the third step 413, when the pull rod 5 is located at the vertex A1, two movement tracks are provided, which are A1-A2 and A1-A5, respectively, when the pull rod 5 moves in the direction of A1-A2, the pull rod 5 is stopped by the first step 411 and the fourth step 414 for double stopping, so that the pull rod 5 can only move in the direction of A5, and thus the unidirectional movement track of A1-A5-A4-A3 is realized. When the pull rod 5 is located at the vertex A3, there are two motion tracks, A3-A2 and A3-A4, respectively, and when the pull rod 5 moves toward the direction A4, the two motion tracks can be stopped by the third step 413 and the second step 412, so as to realize the one-way motion track of A3-A2-A1.

Further, the height of the second step 412 may be greater than the height of the third step 413, the height of the third step 413 may be greater than the height of the fourth step 414, and the height of the fourth step 414 may be greater than the height of the first step 411, so that the sliding of the pull rod 5 is smoother.

In an embodiment of the present invention, the charging device includes: and the flip structure 2 is movably connected with the shell 1 to close or open the shell 1. Can seal the subassembly 3 that charges in accomodating the chamber through this flip structure 2, can keep the clean and tidy of outward appearance, and can avoid dust and moisture to cause the damage to the subassembly 3 that charges.

In the embodiment of the present invention, the free end of the flip structure 2 is provided with a hook structure 21, the housing 1 is provided with a slot 11 matched with the hook structure 21, when the flip structure 2 is closed with the housing 1, the hook structure 21 is connected to the slot 11. Specifically, one end of the flip structure 2 is movably connected with the housing 1, and the other end of the flip structure 2, namely the free end, can be clamped with the clamping groove 11 through the clamping hook structure 21, so that the flip structure 2 and the housing 1 are locked together to form a child lock structure, and therefore the problem of safety caused by the fact that a child opens the flip structure 2 and contacts a charging interface can be effectively avoided.

In the embodiment of the present invention, the hook structure 21 can be bent along the free end of the flip structure 2 to the vertical direction close to the housing 1, and after extending a certain distance, it is bent vertically to the direction close to the other end of the flip structure 2 again, and extends a certain distance to form.

Wherein, the hook structure 21 and the flip structure 2 can be an integrated structure.

In the embodiment of the present invention, the hook structure 21 is provided with a first groove 211, the slot 11 is provided with a second groove 111, the second groove 111 is provided with an elastic member 7, the free end of the elastic member 7 extends out of the second groove 111, when the flip structure 2 and the housing 1 are closed, the free end of the elastic member 7 is embedded in the first groove 211. Therefore, the hook structure 21 and the slot 11 are locked together, when the flip structure 2 is opened, the flip structure 2 needs to be pushed along the horizontal direction, at this time, the hook structure 21 moves towards the opening of the slot 11, the elastic member 7 is compressed under the action of external force and is compressed into the second groove 111, at this time, the hook structure 21 can smoothly move out of the slot 11, and at this time, the flip structure 2 can be opened.

The elastic member 7 may be a hand feeling bump spring, and is composed of a spring 71 and a spherical structure 72 fixedly assembled with the spring 71, wherein one side of the spring 71 away from the spherical structure 72 is embedded in the second groove 111, and the spherical structure 72 may extend out of the second groove 111 and be embedded into the first groove 211 when the flip structure 2 and the housing 1 are closed, so as to lock the hook structure 21 and the slot 11.

In the embodiment of the present invention, the housing 1 is provided with a fixing member 121, and the flip structure 2 is provided with a sliding groove 22 for the fixing member 12 to slide. Specifically, a fixing member 8 is disposed on one side of the sliding connection between the housing 1 and the flip structure 2, and a free end of the fixing member 8 is disposed in the sliding groove 22, when the flip structure 2 and the housing 1 are in a closed state, the fixing member 8 is located on one side of the sliding groove 22 close to the free end of the flip structure 2, when the flip structure 2 is opened, the flip structure 2 is pushed to move along a horizontal direction toward one side close to the free end of the flip structure 1 under an external force until the fixing member 8 is located on one side of the sliding groove 22 far from the free end of the flip structure 2, at this time, the hook structure 21 moves out of the slot 11, the locking state between the hook structure 21 and the slot 11 is released, and the flip structure 2 is rotated again under the external force, at this time, the flip structure 2 can be opened smoothly.

Wherein, the fixing member 8 can be a spring pin, a pin, etc.

In the embodiment of the present invention, a sealing member 9 is disposed between the flip structure 2 and the housing 1. Through setting up this sealing member can prevent that moisture and dust from entering into and holding the chamber, cause the damage to charging assembly 3, influence charging device's security and life.

The sealing member 9 may be made of rubber, silica gel or other materials.

The embodiment of the utility model provides an in, this charging device is when not using, this charging assembly can be accomodate and hold the chamber, when using, can open the flip structure, and press this charging assembly, this moment the pull rod can slide to one side of keeping away from this flip structure along the guide rail, and this charging assembly can pop out this storage chamber under elastic construction's pulling, can charge this moment, after the completion of charging, can press this charging device once more, this moment, this pull rod can slide to one side that is close to this flip structure along this guide rail, and this charging assembly can be under this elastic construction's pulling, accomodate to this storage chamber, and through flip structure lock, thereby hide charging assembly, make its appearance pleasing to the eye succinct, and can reach dustproof and waterproof effect, improve its security and life.

In an embodiment of the present invention, there is provided an aerosol generating apparatus, including: the charging device 100 as described above; and an aerosol generating device body 200 fixedly assembled with the charging device 100. The bottom of this aerosol generation equipment body 200 is in the same place with this charging device 100 fixed assembly, and the electromagnetism module that sets up in the interface 32 that charges of this charging device 100 of accessible and this aerosol generation equipment body 200 passes through charging circuit and is connected, and when charging, this interface 32 that charges passes through the data line with external power module and is connected to charge to battery module through external power module, so that realize the normal work of aerosol generation equipment.

In the embodiment of the present invention, an air inlet 12 is disposed on the housing 1, and when the flip structure 2 is closed with the housing 1, the air inlet 12 is sealed by the flip structure 2.

As an embodiment of the present invention, this inlet port 12 can set up between this draw-in groove 11 and this charging assembly 3, can carry the aerosol through this inlet port 12 in the aerosol generation equipment body 200, so as to realize the atomizing operation of this aerosol generation equipment body 200, when using, can open this flip structure 2, make the air get into in this inlet port 12, when using the completion, can close this flip structure 2, prevent this inlet port 12 of air admission this moment, this aerosol generation equipment stop work, through setting up the inlet port on charging device 100, and it is sealed through flip structure 2, can form the child lock, can effectively avoid children to be in this aerosol generation equipment of curiosity suction, improve the security to children's protection and product.

As an embodiment of the utility model, this inlet port 12 can set up between this draw-in groove 11 and this subassembly 3 that charges, can carry the aerosol through this inlet port 12 in the aerosol takes place the equipment body 200, so as to realize the atomizing operation of this aerosol takes place the equipment body 200, be provided with the through-hole on this flip structure 2, when using, can promote this flip structure 2, so that this flip structure 2 carries out the translation to the direction at its free end place, this through-hole can correspond with this inlet port 12 this moment, realize the operation of admitting air, because the mode of admitting air is comparatively hidden, and only need carry out less removal to flip structure 2, can realize admitting air, therefore, both can facilitate the user's operation, can prevent effectively again that children from imitating easily, and suction, can improve the safety in utilization to children's protection and product.

The embodiment of the utility model provides an in, through set up this charging device that can hide the interface that charges on aerosol generating equipment, make aerosol generating equipment when not charging, the subassembly that should charge can be accomodate and hold in the chamber, when charging, can open the flip structure, and press this subassembly that charges, this moment the pull rod can slide to one side of keeping away from this flip structure along the guide rail, and this subassembly that charges can pop out this chamber of accomodating under the pulling of elastic construction, can charge to the battery module in the aerosol generating equipment this moment, after the completion of charging, can press this charging device once more, this moment, this pull rod can slide to one side of being close to this flip structure along this guide rail, and this subassembly that charges can be under the pulling of this elastic construction, accomodate to this chamber of accomodating, and through flip structure lock, thereby hide the subassembly that charges, make this aerosol generating equipment's appearance pleasing to the eye, and can reach dustproof waterproof effect, improve its security and life.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (10)

1. A charging device, comprising:

a housing (1) having a receiving cavity therein;

the charging assembly (3) is embedded in the accommodating cavity and is ejected out of the accommodating cavity or accommodated in the accommodating cavity under the action of external force;

the sliding seat structure (4) is arranged on the charging assembly (3), and a sliding rail (41) is arranged on the sliding seat structure (4);

the pull rod (5) is connected with the sliding seat structure (4) in a sliding manner and slides along the sliding rail (41) under the action of external force;

and the charging assembly (3) is fixedly connected with the charging assembly to drive the charging assembly (3) to pop up or store the elastic structure (6).

2. A charging device according to claim 1, characterized in that one end of the pull rod (5) is fixedly assembled with the housing (1), and the other end of the pull rod (5) is slidably connected with the slide rail (41).

3. A charging arrangement as claimed in claim 1, in which one end of the resilient structure (6) is fixedly mounted to the housing (1) and the other end of the resilient structure (6) is fixedly mounted to the charging assembly (3).

4. A charging device as in claim 1, characterized in that said charging assembly (3) comprises:

a bottom cover (31), and a charging interface (32) fixedly assembled on the bottom cover (31);

the sliding seat structure (4) is arranged on the side wall of the bottom cover (31).

5. A charging arrangement as claimed in claim 1, in which the charging arrangement comprises:

and the flip structure (2) is movably connected with the shell (1) to close or open the shell (1).

6. The charging device according to claim 5, wherein a hook structure (21) is provided at a free end of the flip structure (2), a slot (11) matching with the hook structure (21) is provided on the housing (1), and when the flip structure (2) and the housing (1) are closed, the hook structure (21) is engaged with the slot (11).

7. The charging device according to claim 6, wherein a first groove (211) is formed in the hook structure (21), a second groove (111) is formed in the slot (11), an elastic member (7) is disposed in the second groove (111), a free end of the elastic member (7) extends out of the second groove (111), and when the flip structure (2) and the housing (1) are closed, the free end of the elastic member (7) is embedded in the first groove (211).

8. A charging arrangement as claimed in claim 5, characterized in that the housing (1) is provided with a fixing member (8), and the flip structure (2) is provided with a sliding slot (22) for the fixing member (8) to slide.

9. An aerosol generating device, comprising:

the charging device (100) of any one of claims 1 to 8; and

and the aerosol generating equipment body (200) is fixedly assembled with the charging device (100).

10. An aerosol generating device according to claim 9, wherein the charging means (100) is provided with a flip-top structure (2) and the housing (1) is provided with an air inlet opening (12), the air inlet opening (12) being sealed by the flip-top structure (2) when the flip-top structure (2) is closed with the housing (1).

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