WO2014153719A1

WO2014153719A1 - Electronic cigarette

Info

Publication number: WO2014153719A1
Application number: PCT/CN2013/073199
Authority: WO
Inventors: 刘秋明
Original assignee: Liu Qiuming
Priority date: 2013-03-26
Filing date: 2013-03-26
Publication date: 2014-10-02
Also published as: CN105163609B; CN105163609A; US20140290674A1

Abstract

Disclosed is an electronic cigarette, comprising a battery sleeve (10), an outer sleeve (20), an inner threaded sleeve (40), an outer threaded sleeve (30) and an upper electrode (50) fixedly provided inside the outer threaded sleeve (30), wherein the upper electrode (50) is provided with a first through-hole (510), the outer threaded sleeve (30) is provided with a second through-hole (310), the inner threaded sleeve (40) comprises a tubular body (410) and an annular land (420) which extends radially along an end face of the tubular body (410) and is formed with respect to the periphery of the tubular body (410), the annular land (420) comprises an upper end face (422) and a lower end face (424), the upper end face (422) is a wave-shaped end face, the tubular body (410) is sheathed inside the battery sleeve (10), the lower end face (424) and the battery sleeve (10) are butt-joined, an air intake channel in communication with the outside environment is formed at the butt joint of the upper end face (422) and the outer threaded sleeve (30), and the air intake channel forms an airflow loop with the second through-hole (310) and the first through-hole (510). The formation of the air intake channel at the connection of wave-shaped end faces can avoid harming user.

Description

e-cigarette

Technical field

The present invention relates to the field of electric heating products, and more particularly to an electronic cigarette.

Background technique

Due to the strengthening of national smoking bans and the improvement of people's health awareness, e-cigarettes have become more and more widely used as substitutes for traditional tobacco. The existing e-cigarettes are generally composed of tobacco rods and cigarette holders. The battery and the cigarette holder are provided with an atomizer, and the atomizer is electrically connected with the tobacco rod portion. There is an oil cup in the mouthpiece for containing the liquid smoke. When the person starts to smoke from the mouthpiece, the smoke liquid slowly flows into the atomizer, the atomizing wire in the atomizer sucks the smoke liquid, and the control circuit board in the tobacco rod senses. To the current, the heat generating device at the control atomizing wire atomizes the smoke liquid to form smoke, which is sucked through the mouthpiece cover.

In the existing electronic cigarette, the threaded copper piece is slotted or the lamp is opened for the air intake, but the threaded copper piece or the lamp is opened to form a sharp sharp corner, which is easy to cause damage to the user.

Summary of the invention

The technical problem to be solved by the present invention is that, in view of the prior art, the threaded copper member or the lamp cap is slotted to produce a sharp sharp corner, which is easy to cause harm to the user, and provides an electronic cigarette, which has an internal thread sleeve or The end face of the battery cover is designed as a wave-shaped end face, and an air inlet passage is formed at a joint of the wave-shaped end face and other planes, and no sharp edges and corners are generated to avoid harm to the human body.

The technical solution adopted by the present invention to solve the technical problem thereof is: construction An electronic cigarette includes a battery sleeve, an outer sleeve, an inner thread sleeve, an outer thread sleeve and an upper electrode fixedly disposed in the outer thread sleeve, wherein the upper electrode is provided with a first through hole, and the outer thread sleeve a second through hole is provided in the upper opening, the inner threaded sleeve includes a cylinder body and An annular table extending radially along an end surface of the cylinder and formed with respect to a periphery of the cylinder, the annular table including an upper end surface and a lower end surface, the upper end surface being a wave-shaped end surface, The tubular body is sleeved in the battery sleeve, the lower end surface is in abutting connection with the battery sleeve, and the upper end surface abuts with the external threaded sleeve to form an air inlet passage communicating with the outside, Intake passage Forming an air flow loop with the second through hole and the first through hole.

In the electronic cigarette of the present invention, The externally threaded sleeve includes a body and a connecting portion, and the connecting portion is provided with an external thread, and the second through hole is opened on an annular groove formed between the body and the connecting portion.

In the electronic cigarette of the present invention, the body of the externally threaded sleeve is in abutting connection with the upper end surface of the internally threaded sleeve.

In the electronic cigarette according to the present invention, an inner thread is formed inside the cylinder, and the internal thread is connected to the external thread.

In the electronic cigarette of the present invention, the distance between the peak of the wavy end surface and the trough is 0.1 mm to 1 mm.

In the electronic cigarette of the present invention, the body, the connecting portion and the annular groove are integrally formed.

An electronic cigarette, The utility model comprises a battery sleeve, an outer sleeve, an inner thread sleeve, an outer thread sleeve and an upper electrode fixedly disposed in the outer thread sleeve, wherein the upper electrode is provided with a first through hole, and the outer thread sleeve is provided with a second a through hole, the internally threaded sleeve includes a barrel and An annular table extending radially along an end surface of the cylinder and formed opposite to the circumference of the cylinder, the cylinder being open at least one of the axial direction of the annular table a third through hole, the annular table includes an upper end surface and a lower end surface, wherein the lower end surface is a wave end surface, the cylinder is sleeved in the battery sleeve, and the upper end surface is in contact with the external thread sleeve The lower end surface and the battery sleeve abutting a connection to form an air inlet passage communicating with the outside, and the air inlet passage forms an air flow loop with the third through hole, the second through hole and the first through hole.

In the electronic cigarette of the present invention, a groove is formed between the cylindrical body and the annular table, and the third through hole is opened on the groove.

In the electronic cigarette of the present invention, the externally threaded sleeve includes a body and a connecting portion, the connecting portion is provided with an external thread, and the second through hole is opened on an annular groove formed between the body and the connecting portion.

In the electronic cigarette of the present invention, the upper end surface is in abutting connection with the body of the externally threaded sleeve.

An electronic cigarette includes a battery sleeve, an outer sleeve, an inner thread sleeve, an outer thread sleeve and an upper electrode fixedly disposed in the outer thread sleeve, wherein the upper electrode is provided with a first through hole, and the outer thread sleeve a second through hole is provided in the upper opening, the inner threaded sleeve includes a cylinder body and An annular table extending radially along an end surface of the cylinder and formed with respect to a periphery of the cylinder, the cylinder being open at least one axially adjacent to the annular table a third through hole, the end of the battery sleeve adjacent to the outer sleeve is a wave-shaped end surface, the cylinder is sleeved in the battery sleeve, and the wavy end surface The battery sleeve and the annular table abut the connection to form an air inlet passage communicating with the outside, and the air inlet passage forms an air flow loop with the third through hole, the second through hole and the first through hole.

In the electronic cigarette of the present invention, the externally threaded sleeve includes a body and a connecting portion, and the connecting portion is provided with an external thread. The second through hole is opened on an annular groove formed between the body and the connecting portion.

In the electronic cigarette of the present invention, the annular table is fixedly coupled to the body of the externally threaded sleeve.

The electronic cigarette of the present invention has the following beneficial effects: by designing the end surface of the inner thread sleeve or the battery sleeve as a wave-shaped end surface, and forming an air inlet passage communicating with the outside at the joint of the wave end surface and the other plane, the gas is from The air inlet passage enters the electronic cigarette, and the smoke generated in the electronic cigarette is brought to the nozzle cover for the user to suck. By skillfully designing the undulating end surface, the invention avoids the groove on the threaded copper member, does not produce sharp edges and corners, avoids damage to the human body, and has uniform airflow and beautiful appearance.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a partial cross-sectional view showing the structure of an electronic cigarette according to a first embodiment of the present invention;

Figure 2 is a schematic structural view of the externally threaded sleeve of Figure 1;

3 is a partial structural sectional view of an electronic cigarette according to a second embodiment of the present invention;

Figure 4 is a schematic structural view of the externally threaded sleeve of Figure 3;

Figure 5 is a cross-sectional view showing a partial structure of an electronic cigarette according to a third embodiment of the present invention;

Figure 6 is a schematic view showing the structure of the battery case of Figure 5;

detailed description

For a better understanding of the technical features, objects and effects of the present invention, the embodiments of the present invention are described in detail with reference to the accompanying drawings.

Embodiment 1

As shown in FIGS. 1 and 2, the electronic cigarette provided in the first embodiment of the present invention includes a battery cover 10, an outer sleeve 20, an inner threaded sleeve 40, an outer threaded sleeve 30 and an upper electrode 50. The upper electrode 50 is fixedly disposed in the externally threaded sleeve 30, and the first through hole 510 is defined in the upper electrode 50. In this embodiment, the battery sleeve 10 and the outer sleeve 20 are not directly connected, but the inner sleeve 40 and the outer sleeve 30 are connected together.

The outer threaded sleeve 30 includes a body 320, a connecting portion 330 and an annular groove (not shown). Connection 330 is disposed on a side close to the internal thread sleeve 40, and the connecting portion 330 is provided with an external thread (not shown), and the annular groove is disposed at the body 320 and the connecting portion Between the 330s, a second through hole 310 is defined in the annular groove. In this embodiment, the second through holes 310 may be square, circular, triangular or any other irregular shape, and the number of the second through holes 310 is not limited, and may be one or plural. The body 320, the connecting portion 330 and the annular groove are integrally formed, and the overall effect is good, and the manufacturing process is convenient.

The internally threaded sleeve 40 is generally hollow cylindrical and includes a barrel 410 and an annular table 420. The annular table 420 is radially along one end of the cylinder 410 A ring extending and formed relative to the periphery of the barrel 410.

The inner portion of the barrel 410 near the external thread is provided with an internal thread 412 which is screwed to the external thread to connect the internally threaded sleeve 40 and the externally threaded sleeve 30.

The diameter of the annular table 420 is slightly larger than the diameter of the barrel 410, and the annular table 420 includes an upper end surface 422 and a lower end surface 424, and the upper end surface 422 is a portion adjacent to the body 320 of the externally threaded sleeve 30. In the embodiment, the upper end surface 422 is a wave-shaped end surface, and the cylindrical body 410 is sleeved in the battery cover 10 . The lower end surface 424 is fixed to the upper end surface of the battery cover 10, The upper end surface 422 is in abutting connection with the body 320 of the externally threaded sleeve 30. Since the upper end surface 422 is a wave-shaped end surface, an inlet passage is formed at a joint between the upper end surface 422 and the body 320, and the intake passage is formed. An air flow loop is formed with the second through hole 310 and the first through hole 510. The air can be formed between the upper end surface 422 and the body 320 when the user smokes the electronic cigarette. The passage enters the electronic cigarette, and then the smoke is taken away through the second through hole 310 and the first through hole 510 in order for the user to suck.

In an embodiment, the distance between the peak of the wavy end face and the trough is 0.1-1 mm, that is, the distance between the crest of the wavy end face and the trough cannot be too large or too small, and too large may cause the electronic cigarette to be tightly sealed. If it is too small, it will affect the taste of smoking. It is preferable that the distance between the peak of the wavy end face and the trough is 0.4 mm.

In the electronic cigarette of the present invention, the upper end surface 422 of the inner threaded sleeve 40 is designed as a wave-shaped end surface, so that the abutting portion of the wave-shaped end surface and the outer threaded sleeve 30 forms an air inlet passage communicating with the outside for gas in the atmosphere. enter, The smoke generated in the electronic cigarette is brought to the mouth of the nozzle for the user to smoke. It avoids the groove on the threaded copper piece, does not produce sharp edges and corners, avoids damage to the human body, and the electronic cigarette has a uniform airflow and beautiful appearance.

Embodiment 2

As shown in FIGS. 3 and 4, the electronic cigarette provided by the second embodiment of the present invention includes a battery cover 10, an outer sleeve 20, an inner sleeve 40a, an outer sleeve 30 and an upper electrode 50. The upper electrode 50 is fixedly disposed in the externally threaded sleeve 30, and the first through hole 510 is defined in the upper electrode 50. In this embodiment, the battery sleeve 10 and the outer sleeve 20 are not directly connected, but the two are connected by an internally threaded sleeve 40a and an externally threaded sleeve 30.

The outer threaded sleeve 30 includes a body 320, a connecting portion 330 and an annular groove (not shown). Connection 330 is disposed on a side close to the internal thread sleeve 40a, and the connecting portion 330 is provided with an external thread (not shown), and the annular groove is disposed at the body 320 and the connecting portion Between the 330s, a second through hole 310 is defined in the annular groove. In this embodiment, the second through holes 310 may be square, circular, triangular or any other irregular shape, and the number of the second through holes 310 is not limited, and may be one or plural. The body 320, the connecting portion 330 and the annular groove are integrally formed, and the overall effect is good, and the manufacturing process is convenient.

The internally threaded sleeve 40a is generally hollow cylindrical and includes a barrel 410a, an annular table 420a and a recess 430a. Annular table 420a is along The cylindrical body 410a has an end surface extending radially and opposite to the circumference of the cylindrical body 410a, and the cylindrical body 410a is open at least one of the axial directions of the annular table 420a. The third through hole 432a. Specifically, a recess 430a is defined between the cylinder 410a and the annular base 420a, and the third through hole 432a is defined in the recess 430a. The number and shape of the third through hole 432a are not fixed, and the amount of the third through hole 432a can be determined according to the user's smoking amount. The size is reasonably designed.

The inner portion of the cylinder 410a near the external thread is provided with an internal thread 412a which is screwed to the external thread to connect the internally threaded sleeve 40a and the externally threaded sleeve 30.

The diameter of the annular table 420a is slightly larger than the diameter of the cylinder 410a, and the annular table 420a includes an upper end surface 422a and a lower end surface 424a, and the upper end surface 422a is a portion close to the body 320 of the externally threaded sleeve 30. In this embodiment, the lower end surface 424a is a wave-shaped end surface, and the cylindrical body 410a and the recess 430a are sleeved in the battery case 10. The upper end surface 422a is in abutting connection with the body 320 of the externally threaded sleeve 30, and the lower end surface 424a is in abutment with the upper end surface of the battery sleeve 10. . Since the lower end surface 424a is a wave-shaped end surface, and the lower end surface 424a forms an intake passage with the end surface of the battery can 10, the air inlet passage is formed. An air flow loop is formed with the third through hole 432a, the second through hole 310, and the first through hole 510. When the user smokes the electronic cigarette, the gas can be formed from the lower end surface 424a and the battery casing 10 The passage enters the electronic cigarette, and then the smoke is taken away through the third through hole 432a, the second through hole 310, and the first through hole 510 in order for the user to suck.

In the electronic cigarette of the present invention, by designing the lower end surface 424a of the female screw sleeve 40a as a wave-shaped end surface, the abutting portion of the wavy end surface and the end surface of the battery can 10 is formed to communicate with the outside. Intake passage for gas in the atmosphere, The smoke generated in the electronic cigarette is brought to the mouth of the nozzle for the user to smoke. It avoids the groove on the threaded copper piece, does not produce sharp edges and corners, avoids damage to the human body, and the electronic cigarette has a uniform airflow and beautiful appearance.

Embodiment 3

As shown in FIGS. 5 and 6, the electronic cigarette provided by the third embodiment of the present invention includes a battery cover 10b, an outer sleeve 20, an inner threaded sleeve 40b, an outer threaded sleeve 30 and an upper electrode 50. The upper electrode 50 is fixedly disposed in the externally threaded sleeve 30, and the first through hole 510 is defined in the upper electrode 50. In this embodiment, the battery sleeve 10b and the outer sleeve 20 are not directly connected, but the inner sleeve 40b and the outer sleeve 30 are connected together.

The outer threaded sleeve 30 includes a body 320, a connecting portion 330 and an annular groove (not shown). Connection 330 is disposed on a side close to the internal thread sleeve 40b, and the connecting portion 330 is provided with an external thread (not shown), and the annular groove is disposed at the body 320 and the connecting portion Between the 330s, a second through hole 310 is defined in the annular groove. In this embodiment, the second through holes 310 may be square, circular, triangular or any other irregular shape, and the number of the second through holes 310 is not limited, and may be one or plural. The body 320, the connecting portion 330 and the annular groove are integrally formed, and the overall effect is good, and the manufacturing process is convenient.

The internally threaded sleeve 40b is generally hollow cylindrical and includes a barrel 410b, an annular table 420b and a recess 430b. Ring station 420b is along The cylindrical body 410b has an annular end extending radially with respect to the circumference of the cylindrical body 410b, and the cylindrical body 410b is open at least one of the axial direction of the annular table 420b. The third through hole 432b. Specifically, a recess 430b is defined between the cylinder 410b and the annular base 420b, and the third through hole 432b is defined in the recess 430b. The number and shape of the third through hole 432b are not fixed, and the amount of the third through hole 432b can be determined according to the user's smoking amount. The size is reasonably designed.

The inner portion of the cylinder 410b near the external thread is provided with an internal thread 412b which is screwed to the external thread to connect the internally threaded sleeve 40b and the externally threaded sleeve 30.

The diameter of the annular table 420b is slightly larger than the diameter of the cylinder 410b, and the annular table 420b includes an upper end surface 422b and a lower end surface 424b, and the upper end surface 422b is a portion close to the body 320 of the externally threaded sleeve 30. In the present embodiment, the upper end surface 422b is abutted against the body 320 of the externally threaded sleeve 30, the lower end surface 424b is abutted against the upper end surface of the battery sleeve 10b, and the cylindrical body 410b and the recess 430b are sleeved in the battery sleeve 10b.

The battery sleeve 10b has a hollow cylindrical shape, and one end of the battery sleeve 10b near the lower end surface 424b is a wave-shaped end surface. When the lower end surface 424b is fixedly held by the battery sleeve 10b, the wavy end surface and the lower end surface 424b of the battery sleeve 10b. Connection formation Intake passage communicating with the outside world, then the intake passage An air flow loop is formed with the third through hole 432b, the second through hole 310, and the first through hole 510. When the user smokes the electronic cigarette, the gas can be formed between the lower end surface 424b and the battery sleeve 10b. The passage enters the electronic cigarette, and then the smoke is taken away through the third through hole 432b, the second through hole 310 and the first through hole 510 in order for the user to suck.

In the embodiment, the distance between the peak and the trough of the wavy end face of the battery sleeve 10b is 0.1-1 mm, that is, the distance between the peak of the wavy end face and the trough cannot be too large or too small, and the excessively large may cause the electron The smoke seal is not tight, and too small will affect the taste of the cigarette. Preferably, the distance between the peak of the wavy end face and the trough is 0.4 mm.

In the electronic cigarette of the present invention, the end of the battery sleeve 10b near the lower end surface 424b is designed as a wave-shaped end surface, so that the abutment portion of the wave-shaped end surface and the lower end surface 424b is in communication with the outside. Intake passage for gas in the atmosphere, The smoke generated in the electronic cigarette is brought to the mouth of the nozzle for the user to smoke. It avoids the groove on the threaded copper piece, does not produce sharp edges and corners, avoids damage to the human body, and the electronic cigarette has a uniform airflow and beautiful appearance.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed.

Claims

An electronic cigarette comprising a battery sleeve (10), an outer sleeve (20), an inner thread sleeve (40), an outer thread sleeve (30), and an upper electrode (50) fixedly disposed in the outer thread sleeve (30) a first through hole (510) is defined in the upper electrode (50), wherein the outer threaded sleeve (30) is provided with a second through hole (310), and the inner threaded sleeve (40) A cylindrical body (410) and an annular table (420) extending radially along an end surface of the cylindrical body (410) and formed with respect to a periphery of the cylindrical body (410), the annular table (420) including an upper end surface (422) And a lower end surface (424), wherein the upper end surface (422) is a wave-shaped end surface, the cylinder body (410) is sleeved in the battery sleeve (10), the lower end surface (424) and the battery sleeve (10) abutting the connection, the upper end surface (422) abuts the outer threaded sleeve (30) to form an intake passage communicating with the outside, the intake passage and the second through hole (310) The first through hole (510) forms an air flow loop.
The electronic cigarette according to claim 1, wherein the externally threaded sleeve (30) comprises a body (320) and a connecting portion (330), and the connecting portion (330) is provided with an external thread, the first A through hole (310) is opened on the annular groove formed between the body (320) and the connecting portion (330).
The electronic cigarette according to claim 2, wherein the body (320) of the externally threaded sleeve (30) is in abutting connection with the upper end surface (422) of the internally threaded sleeve (40).
The electronic cigarette according to claim 2, characterized in that the inner side of the cylinder (410) is provided with an internal thread (412), and the internal thread (412) is connected to the external thread.
The electronic cigarette according to claim 1, wherein a distance between a peak of the wavy end surface and a trough is 0.1 mm to 1 mm.
The electronic cigarette according to claim 2, wherein the body (320), the connecting portion (330) and the annular groove are integrally formed.
An electronic cigarette comprising a battery sleeve (10), an outer sleeve (20), an inner thread sleeve (40a), an outer thread sleeve (30) and an upper electrode (50) fixedly disposed in the outer thread sleeve (30) a first through hole (510) is defined in the upper electrode (50), wherein the outer threaded sleeve (30) is provided with a second through hole (310), and the inner threaded sleeve (40a) A cylindrical body (410a) and an annular table (420a) extending radially along an end surface of the cylindrical body (410a) and formed with respect to a periphery of the cylindrical body (410a), the cylindrical body (410a) being adjacent to the annular table ( At least one third through hole (432a) is formed in an axial direction of the 420a), the annular stage (420a) includes an upper end surface (422a) and a lower end surface (424a), and the lower end surface (424a) is a wavy end surface. The cylinder (410a) is sleeved in the battery sleeve (10), the upper end surface (422a) abuts the external thread sleeve (30), and the lower end surface (424a) and the battery sleeve (10) forming an intake passage communicating with the outside at the abutting connection, the intake passage and the third through hole (432a), A through hole (310), a first through hole (510) formed in the gas flow circuit.
The electronic cigarette according to claim 7, wherein a groove (430a) is defined between the cylindrical body (410a) and the annular table (420a), and the third through hole (432a) is opened at On the groove (430a).
The electronic cigarette according to claim 7, wherein the externally threaded sleeve (30) comprises a body (320) and a connecting portion (330), and the connecting portion (330) is provided with an external thread, the first A through hole (310) is opened on the annular groove formed between the body (320) and the connecting portion (330).
The electronic cigarette according to claim 8, wherein the upper end surface (424a) is in abutting connection with the body (320) of the externally threaded sleeve (30).
The electronic cigarette according to claim 9, characterized in that the inner side of the cylinder (410a) is provided with an internal thread (412a), and the internal thread (412a) is connected to the external thread.
The electronic cigarette according to claim 7, wherein a distance between a peak of the wavy end surface and a trough is 0.1 mm to 1 mm.
The electronic cigarette according to claim 9, wherein the body (320), the connecting portion (330) and the annular groove are integrally formed.
An electronic cigarette comprising a battery sleeve (10b), an outer sleeve (20), an inner thread sleeve (40b), an outer thread sleeve (30), and an upper electrode (50) fixedly disposed in the outer thread sleeve (30) a first through hole (510) is defined in the upper electrode (50), wherein the outer threaded sleeve (30) is provided with a second through hole (310), and the inner threaded sleeve (40b) A cylindrical body (410b) and an annular table (420b) extending radially along an end surface of the cylindrical body (410b) and formed with respect to a periphery of the cylindrical body (410b), the cylindrical body (410b) being adjacent to the annular table ( At least one third through hole (432b) is opened in the axial direction of the 420b), the end of the battery sleeve (10b) adjacent to the outer sleeve (20) is a wave end surface, and the cylinder body (410b) is sleeved on In the battery case (10b), the battery sleeve (10b) of the wavy end surface and the annular table (420b) abut the connection to form an intake passage communicating with the outside, the intake passage and the first passage The three-way hole (432b), the second through hole (310), and the first through hole (510) form an air flow loop.
The electronic cigarette according to claim 14, wherein a groove (430b) is defined between the cylindrical body (410b) and the annular table (420b), and the third through hole (432b) is opened at The groove (430b).
The electronic cigarette according to claim 14, wherein the externally threaded sleeve (30) comprises a body (320) and a connecting portion (330), and the connecting portion (330) is provided with an external thread, the first A through hole (310) is opened on the annular groove formed between the body (320) and the connecting portion (330).
The electronic cigarette according to claim 16, wherein the annular table (420b) is fixedly coupled to the body (320) of the externally threaded sleeve (30).
The electronic cigarette according to claim 16, characterized in that the inner side of the cylinder (410b) is provided with an internal thread (412b), and the internal thread (412b) is connected to the external thread.
The electronic cigarette according to claim 14, wherein a distance between a peak of the wavy end surface and a trough is 0.1 mm to 1 mm.
The electronic cigarette according to claim 16, wherein the body (320), the connecting portion (330) and the annular groove are integrally formed.