CN211794325U - Electronic cigarette - Google Patents

Abstract

The utility model discloses an electronic cigarette, including atomizing device, the power supply unit who is equipped with the installation department and adapter, atomizing device one end is equipped with the suction mouth, and the relative other end is equipped with first positive contact, the cover is located first insulating part and the cover of first positive contact are located the first negative pole contact of first insulating part, the adapter with first negative pole contact threaded connection works as the adapter installation with the installation department and with when the connection can be dismantled to the installation department, first positive contact with the installation department contacts, so that atomizing device with the power supply unit electricity is connected. Through additionally arranging the adapter matched with the power supply device, the atomization device is matched with different power supply devices for use, the application range of the atomization device is enlarged, and the atomization device is convenient for people to use.

Description

Electronic cigarette

Technical Field

The utility model relates to an electron cigarette technical field, in particular to electron cigarette.

Background

Along with the development of electronic cigarettes, the atomizer with the threaded connector with the standard size is gradually adopted by most manufacturers, so that the standardized production is facilitated, and the production cost is saved. However, the atomizer can only be adapted to a power supply device with a corresponding threaded socket, and cannot be matched with power supply devices with different models or other connection modes, which affects the application range of the atomizer.

Thus, the prior art is yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing an electron cigarette aims at increasing the application scope of atomizer through addding the adapter.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides an electronic cigarette, includes atomizing device, is equipped with the power supply unit and the adapter of installation department, atomizing device one end is equipped with the suction mouth, and the relative other end is equipped with first anodal contact, the cover is located first insulating part and the cover of first anodal contact are located the first negative pole contact of first insulating part, the adapter with first negative pole contact threaded connection works as the adapter install in the installation department and with when the connection can be dismantled to the installation department, first anodal contact with the installation department contacts, so that atomizing device with the power supply unit electricity is connected.

The electron cigarette, wherein, the periphery of first negative pole contact is equipped with the external screw thread, and is corresponding, the adapter is equipped with the through-hole, the through-hole inner wall is equipped with the internal thread of looks adaptation, works as first negative pole contact screw in during the through-hole, first positive pole contact is followed the through-hole appears, for the installation department contact.

The electronic cigarette is characterized in that the mounting part comprises a second negative electrode contact with a mounting hole, a second positive electrode contact and a second insulating piece, the second insulating piece is sleeved on the second positive electrode contact and is contained in the mounting hole to form a mounting groove for mounting the adapter, a limiting piece matched with the adapter is arranged on the side wall of the mounting groove, when the adapter is contained in the mounting groove, the adapter is matched with the limiting piece, and the second positive electrode contact is elastically abutted to the first positive electrode contact.

The electron cigarette, wherein, the locating part includes draw-in groove and an at least guide way, the draw-in groove along circumference set up in the mounting groove lateral wall, an at least guide way one end with the draw-in groove is linked together, and the other end extends to the opening part of mounting groove along the axial, and is corresponding, the adapter be equipped with at least one with the stopper of guide way looks adaptation, an at least stopper slide in along corresponding guide way in the draw-in groove, and can follow the draw-in groove remove with the guide way dislocation set.

The electronic cigarette further comprises at least one locking block, and the at least one locking block is accommodated in the clamping groove and located between the adjacent guide grooves.

The electronic cigarette is characterized in that a flange is convexly arranged on the inner wall of the mounting hole, a bottom ring is arranged at one end, away from the atomizing device, of the adapter, and when the adapter is accommodated in the mounting groove, the bottom ring is only abutted to the flange.

The electronic cigarette comprises a limiting part and an elastic ring, wherein the limiting part comprises a first avoiding groove and a part of elastic ring, the first avoiding groove is formed in the side wall of a mounting groove along the circumferential direction, the part of the elastic ring is accommodated in the first avoiding groove, the elastic ring can elastically stretch out and draw back along the radial direction, correspondingly, a second avoiding groove is formed in the periphery of the adapter, and when the adapter is mounted in the mounting groove, the part of the elastic ring is clamped into the second avoiding groove and elastically deforms to fasten the adapter.

The electronic cigarette is characterized in that the elastic ring is made of an elastic metal material.

The electron cigarette, wherein, the elastic ring includes annular body, annular body is equipped with the breach.

The electronic cigarette is characterized in that one end of the atomization device, which is connected with the adapter, is also provided with at least one air inlet communicated with the suction port, the adapter is provided with at least one air inlet corresponding to the air inlet, and when the adapter is in threaded connection with the first negative electrode, at least one air inlet is communicated with the corresponding air inlet.

The utility model provides an electronic cigarette, including atomizing device, the power supply unit who is equipped with the installation department and adapter, atomizing device one end is equipped with the suction mouth, and the relative other end is equipped with first positive contact, the cover is located first insulating part and the cover of first positive contact are located the first negative pole contact of first insulating part, the adapter with first negative pole contact threaded connection works as the adapter installation with the installation department and with when the connection can be dismantled to the installation department, first positive contact with the installation department contacts, so that atomizing device with the power supply unit electricity is connected. Through additionally arranging the adapter matched with the power supply device, the atomization device is matched with different power supply devices for use, the application range of the atomization device is enlarged, and the atomization device is convenient for people to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of a preferred embodiment of an electronic cigarette provided by the present invention;

fig. 2 is a cross-sectional view of a preferred embodiment of the electronic cigarette provided by the present invention;

fig. 3 is a schematic view of an adaptor in a preferred embodiment of the electronic cigarette provided by the present invention;

fig. 4 is a schematic diagram of a second negative contact in a preferred embodiment of the electronic cigarette according to the present invention;

fig. 5 is an exploded view of an embodiment of an electronic cigarette provided by the present invention;

fig. 6 is a cross-sectional view of an embodiment of the electronic cigarette provided by the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Power supply device	2	Atomization device
3	Adapter	11	Mounting part
				12	Accommodating groove	111	Second negative electrode contact
112	Second insulating member	113	Second positive electrode contact
				114	Position limiting piece	1111	Mounting hole
1112	Flange	1113	Guide groove
				1114	Clamping groove	1141	First avoiding groove
1142	Elastic ring	1143	Gap
				21	Suction opening	22	First negative electrode contact
23	First insulating member	31	Limiting block
				32	Through hole	33	Internal thread
34	Ventilation trough	35	Bottom ring
				36	Air inlet	24	First positive electrode contact
37	Second avoiding groove

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 4, in the present embodiment, the electronic cigarette includes an atomizing device 2, a power supply device 1 having a mounting portion 11, and an adaptor 3, one end of the atomizing device 2 is provided with a suction port 21, the opposite end is provided with a first positive electrode contact 24, a first insulating member 23 sleeved on the first positive electrode contact 24, and a first negative electrode contact 22 sleeved on the first insulating member 23, and the adaptor 3 is in threaded connection with the first negative electrode contact 22. When adapter 3 install with installation department 11 and with installation department 11 can dismantle the connection, first anodal contact 24 with installation department 11 contacts, so that atomizing device 2 with power supply unit 1 is connected electrically. This embodiment is through setting up the adapter 3 with power supply unit 1 looks adaptation, connects atomizing device 2 and power supply unit 1 respectively through adapter 3 for atomizing device 2 is connected with power supply unit 1 electricity. Make things convenient for atomizing device 2 to use through the adaptation of corresponding adapter 3 and the power supply unit 1 adaptation of different grade type like this, improved atomizing device 2's application range, bring the convenience for user's use.

In the present embodiment, as shown in fig. 1, the atomization device 2 includes an atomization device 2 body, the suction port 21 is located at one end of the atomization device 2 body, and the first negative contact 22 is connected to the other end of the atomization device 2 body opposite to the other end. The first negative contact 22 is a hollow cylinder structure, the first positive contact 24 is accommodated in the through hole 32, and the first insulating member 23 is sleeved on the outer circumferential surface. The first positive contact 24 and the first negative contact 22 are separated by the first insulator 23. One end of a heating element led out from the atomization device 2 body is connected with the first negative electrode contact 22, the other end of the heating element is connected with the first positive electrode contact 24, and the heating element is subsequently connected with the positive electrode and the negative electrode of the power supply device 1 through the first positive electrode contact 24 and the first negative electrode contact 22 respectively, so that a heating circuit is conducted.

Further, the peripheral surface of first negative pole contact 22 is equipped with the external screw thread, and is corresponding, adapter 3 is equipped with through-hole 32, the inner wall of through-hole 32 be equipped with the internal thread 33 of external screw thread looks adaptation, through the cooperation of external screw thread and internal thread 33 will first negative pole contact 22 screw in the through-hole 32 to establish threaded connection, so that atomizing device 2 with adapter 3 establishes detachable connection. When the first negative contact 22 is screwed into the threaded hole, the first positive contact 24 is accommodated in the through hole 32 and exposed from an end of the through hole 32 away from the atomizing device 2, so as to be electrically contacted by the mounting portion 11. Preferably, the adapter 3 is made of a conductive material, so that the first negative contact 22 establishes a threaded connection with the adapter 3 and an electrical connection. The negative pole of the subsequent power supply device 1 is connected to the adapter 3, i.e. electrically connected to the first negative contact 22. When the adapter 3 needs to be detached from the atomization device 2, the adapter 3 is unscrewed in the reverse direction opposite to the screwing direction, so that the assembly and disassembly are convenient.

In the present embodiment, as shown in fig. 1 and 2, the power supply device 1 includes a main body provided with a housing groove 12, and the mounting portion 11 is fitted into the housing groove 12 from an opening of the housing groove 12. The mounting portion 11 includes a second negative electrode contact 111, a second positive electrode contact 113, and a second insulating member 112. The second negative contact 111 is fastened to the power supply device 1, and is provided with a mounting hole 1111, and an axial direction of the mounting hole 1111 is the same as an extending direction of the receiving groove 12. The second insulating member 112 is accommodated in the mounting hole 1111 and is sleeved on the outer circumferential surface of the second positive contact 113. Meanwhile, the second insulating member 112 elastically abuts against the second positive electrode contact 113 and the second negative electrode contact 111, respectively. On the one hand, the second anode contact 113 is separated from the second cathode contact 111 by the second insulating member 112, so as to avoid short circuit. On the other hand, the second positive contact 113 may be fastened in the mounting hole 1111 by a force between the second insulating member 112 and the second positive contact 113. Of course, in practical applications, the force between the second insulating member 112 and the second positive contact 113 can be further increased by providing the groove and the bump, so as to prevent the second positive contact 113 from coming off.

In this embodiment, as shown in fig. 4, one end of the second positive contact 113 is exposed from the mounting hole 1111 to one end of the receiving slot 12 near the opening for the first positive contact 24 to electrically contact, and the other end is exposed from the mounting hole 1111 to the inside of the power supply device 1 for the electrical connection of the battery cells received in the power supply device 1. Since the second positive contact 113 and the second insulating member 112 fill the mounting hole 1111 in the radial direction, an installation groove for installing the adaptor 3 is formed at one end of the mounting hole 1111 near the opening of the receiving groove 12 and together with the mounting hole 1111. The hole wall of the mounting hole 1111, the side wall of the second insulating member 112 and the first positive contact 24 together form the bottom wall of the mounting groove, the mounting hole 1111 is higher than the hole walls of the second positive contact 113 and the second insulating member 112 to form the side wall of the mounting groove, and the opening of the mounting groove has the same direction as the opening of the receiving groove 12.

In this embodiment, a portion of the inner wall of the mounting hole 1111 located in the mounting groove is provided with a flange 1112, and the plane of the flange 1112 is higher than the plane of the second insulating member 112 and the second positive contact 113. Correspondingly, one end of the adapter 3, which is far away from the atomizing device 2, is provided with a bottom ring 35, and the bottom ring 35 is formed by bending the inner wall of the through hole 32 towards the center and is superposed with the central axis of the through hole 32. When the first negative contact 22 is screwed into the through hole 32, the first positive contact 24 sequentially passes through the through hole 32 and the bottom ring 35 to be exposed, so as to be electrically connected to the second positive contact 113. When the adapter 3 with the atomization device 2 mounted thereon is received in the mounting groove, the bottom ring 35 is disposed on the flange 1112, so as to support the adapter 3 and the atomization device 2 via the flange 1112.

Further, since the flange 1112 is located on a plane higher than the plane of the second insulating member 112 and the plane of the second positive contact 113, the bottom ring 35 only abuts against the flange 1112, so that the adapter 3 electrically connected to the first negative contact 22 is only electrically contacted to the second negative contact 111, thereby achieving that the first negative contact 22 of the atomizing device 2 is electrically connected to the second negative contact 111 of the power supply device 1 through the adapter 3. Preferably, the flange 1112 is sleeved on the second insulating member 112, and forms a bottom wall of the mounting groove together with the side wall of the second insulating member 112 and the first positive contact 24. This is advantageous in maintaining the aesthetic appearance and structural integrity of the mounting portion 11.

Further, as shown in fig. 3 and 4, a limiting member 114 adapted to the adapter 3 is disposed on a side wall of the mounting groove, that is, an inner wall of the mounting hole 1111, and the adapter 3 is detachably connected to the power supply unit 1 by the cooperation between the limiting member 114 and the adapter 3, so as to fasten the adapter 3 to the mounting portion 11. Specifically, the position-limiting member 114 includes a slot 1114 and at least one guiding slot 1113. Draw-in groove 1114 along circumference set up in the lateral wall of mounting groove, at least one guide way 1113 is followed the axial direction of mounting hole 1111 extends, and one end with draw-in groove 1114 is linked together, and the other end extends to the opening part of mounting groove. Correspondingly, the adapter 3 is provided with at least one limiting block 31 matched with the guide groove 1113. When the adapter 3 is installed, the adapter 3 is placed at the opening of the installation groove, and the adapter 3 is rotated to make the at least one limiting block 31 and the corresponding guide groove 1113 respectively located on the same axis, so that each limiting block 31 is respectively accommodated in the corresponding guide groove 1113. Then, the adapter 3 is mounted downward, so that each stopper 31 slides along the corresponding guide groove 1113 until sliding into the slot 1114. Finally, the adapter 3 is rotated again, so that the at least one limiting block 31 is arranged in a staggered manner with the corresponding guide groove 1113, i.e. not located on the same axis. Like this, when applying ascending power to adapter 3, because each stopper 31 and corresponding guide way 1113 dislocation set, and with draw-in groove 1114 lateral wall butt, the card is gone into promptly in the draw-in groove 1114, therefore make adapter 3 can't be extracted to realized fastening adapter 3 in the mounting groove.

In this embodiment, the at least one limiting block 31 may be 2, 3, or 4 … …, the at least one limiting block 31 is located on the same plane, and the plane enclosed by the at least one limiting block 31 is perpendicular to the axial direction of the through hole 32 and the bottom ring 35. Preferably, the at least one limiting block 31 is uniformly distributed on the periphery of the adapter 3 along the circumferential direction. For example, when the number of the stoppers 31 is 2, the connecting line of the 2 stoppers 31 passes through the center of the adapter 3; when the number of the limiting blocks 31 is 3, the 3 limiting blocks 31 are symmetrically arranged with respect to the center of the adapter 3. Therefore, the adapter 3 is subjected to uniform constraint force, and the adapter 3 is prevented from inclining.

Further, the shape and/or size of the at least one stopper 31 may be the same or different. When the shape and the size of the at least one limiting block 31 are consistent, the at least one guide groove 1113 is correspondingly consistent, so that when the adapter 3 needs to be taken out of the mounting groove, all the limiting blocks 31 can be aligned to the corresponding guide grooves 1113 only by rotating the adapter 3 until any limiting block 31 is aligned to any guide groove 1113, and then the adapter 3 is taken out, thereby facilitating the operation of a user. Of course, when the shapes and/or sizes of the stoppers 31 are different, each stopper 31 corresponds to each guide groove 1113, and the adapter 3 can be taken out only when each stopper 31 is aligned with the guide groove 1113 corresponding to the stopper 31.

Further, in order to facilitate the user to position the connecting base 3 during the rotation process, the position-limiting member 114 further includes at least one locking block (not shown), and the at least one locking block is received in the slot 1114 and located between the adjacent guiding slots 1113. The number of the locking blocks can be 1, 2 or more. When the number of the adapter socket is 1, when the adapter socket 3 is rotated until any limiting block 31 abuts against the locking block, the at least one limiting block 31 is dislocated with the corresponding guide groove 1113, so that the adapter socket 3 cannot be taken out; when the adapter 3 needs to be taken out, the adapter 3 only needs to be rotated in the opposite direction to the initial position. In practical application, a first positioning member and a second positioning member may be respectively disposed on the outer periphery of the adapter 3 and the outer periphery of the power supply device 1, when the first positioning member and the second positioning member are aligned, that is, located on the same axis, each of the limiting blocks 31 is aligned with the corresponding guide groove 1113, and the adapter 3 may be taken out of or put into the mounting portion 11; when the first positioning member and the second positioning member are dislocated, each stopper 31 is dislocated with the corresponding guide groove 1113 and locked in the slot 1114, thereby realizing the fastening of the adapter 3.

In an embodiment of the present invention, as shown in fig. 5 and 6, the position-limiting member 114 includes a first position-avoiding groove 1141 circumferentially disposed on the side wall of the mounting groove and an elastic ring 1142 partially accommodated in the first position-avoiding groove 1141. The elastic ring 1142 is made of a metal material having elasticity. The elastic ring 1142 includes an annular body having a gap 1143, so that the elastic ring 1142 has an elastic expansion capability along a radial direction thereof. The annular body portion is received in the first clearance groove 1141 and is in a pre-compressed state. Correspondingly, a second avoiding groove 37 is formed in the periphery of the adapter 3 along the circumferential direction. When the adapter 3 is installed in the installation groove, the annular body is partially accommodated in the second avoiding groove 37, that is, the annular body is sleeved on the adapter 3 and elastically expands. The annular body in turn exerts a counterforce on the adapter 3 in the radial direction, so that the adapter 3 is fastened in the mounting groove. The elastic ring 1142 is in surface contact with the first avoidance groove 1141 and the second avoidance groove 37 along the circumferential direction, so that the contact area between the elastic ring 1142 and the rear groove is increased, and the acting force for fastening the adapter 3 is enhanced. Meanwhile, the elastic clamping ring structure is simple to produce and assemble, and the adapter 3 can rotate along the central axis of the adapter in any direction and can be installed in the installation groove.

In this embodiment, the end of the atomizing device 2 having the first negative electrode contact 22 is further provided with at least one air inlet hole (not shown). The at least one air inlet hole is communicated with the suction opening 21, when a user inhales towards the suction opening 21, outside air enters the atomizing device 2 through the air inlet 36, and smoke liquid is atomized and then sucked out from the suction opening 21. Because the adapter 3 is sleeved at the end of the atomizing device 2 where the first negative electrode contact 22 is arranged, in order not to affect the air intake of the atomizing device 2, the adapter 3 is provided with an air inlet 36 corresponding to the at least one air inlet. When the adapter 3 is screwed to the first negative contact 22, the at least one air inlet 36 communicates with the corresponding air inlet.

Further, a vent groove 34 is circumferentially arranged at one end, close to the atomizing device 2, of the inner wall of the mounting hole, and the vent groove 34 is respectively communicated with the air inlet hole and the air inlet 36, so that smooth air inlet of an atomizing channel can be ensured no matter whether the air inlet 36 and the air inlet 36 are aligned or not.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. The utility model provides an electronic cigarette, its characterized in that, includes atomizing device, is equipped with the power supply unit and the adapter of installation department, atomizing device one end is equipped with the suction mouth, and the relative other end is equipped with first anodal contact, the cover is located the first insulating part and the cover of first anodal contact are located the first negative pole contact of first insulating part, the adapter with first negative pole contact threaded connection works as the adapter install in the installation department and with when the connection can be dismantled to the installation department, first anodal contact with the installation department contacts, so that atomizing device with the power supply unit electricity is connected.

2. The electronic cigarette of claim 1, wherein the first negative contact has an external thread on its periphery, and correspondingly, the adaptor has a through hole with an internal thread on its inner wall, and when the first negative contact is screwed into the through hole, the first positive contact is exposed from the through hole for the mounting portion to contact.

3. The electronic cigarette of claim 1, wherein the mounting portion includes a second negative contact having a mounting hole, and a second positive contact and a second insulating member, the second insulating member is sleeved on the second positive contact and received in the mounting hole to form a mounting groove for mounting the adaptor, a limiting member is disposed on a sidewall of the mounting groove, the adaptor is matched with the limiting member when the adaptor is received in the mounting groove, and the second positive contact is elastically abutted against the first positive contact.

4. The electronic cigarette of claim 3, wherein the limiting member comprises a clamping groove and at least one guide groove, the clamping groove is circumferentially disposed on the side wall of the mounting groove, one end of the at least one guide groove is communicated with the clamping groove, the other end of the at least one guide groove axially extends to an opening of the mounting groove, correspondingly, the adaptor is provided with at least one limiting block matched with the guide groove, and the at least one limiting block slides into the clamping groove along the corresponding guide groove and can move along the clamping groove to be disposed in a staggered manner with the guide groove.

5. The electronic cigarette of claim 4, wherein the retaining member further comprises at least one locking block received in the slot and located between adjacent guide slots.

6. The electronic cigarette of claim 3, wherein a flange is convexly disposed on an inner wall of the mounting hole, a bottom ring is disposed at an end of the adaptor that is away from the atomizing device, and when the adaptor is received in the mounting groove, the bottom ring is only abutted to the flange.

7. The electronic cigarette as claimed in claim 3, wherein the limiting member includes a first avoiding groove circumferentially disposed on a sidewall of the mounting groove and an elastic ring partially accommodated in the first avoiding groove, the elastic ring is elastically stretchable along a radial direction, and correspondingly, a second avoiding groove is disposed on an outer periphery of the adaptor, and when the adaptor is mounted in the mounting groove, the elastic ring is partially inserted into the second avoiding groove and elastically deformed to fasten the adaptor.

8. The electronic cigarette of claim 7, wherein the elastic ring is made of a metal material with elasticity.

9. The electronic cigarette of claim 7, wherein the resilient ring comprises an annular body with a gap.

10. The electronic cigarette of claim 1, wherein the end of the atomizing device connected to the adaptor is further provided with at least one air inlet hole communicated with the suction port, the adaptor is provided with at least one air inlet hole corresponding to the air inlet hole, and when the adaptor is in threaded connection with the first negative electrode, the at least one air inlet hole is communicated with the corresponding air inlet hole.

Images