Airflow sensor support, airflow sensor assembly and atomization device

Abstract

The utility model discloses an airflow sensor support, an airflow sensor assembly and an atomization device. The airflow sensor support comprises a support body, a first cavity and a second cavity, wherein the first cavity and the second cavity are formed in the support body; the first cavity comprises a first inlet for introducing airflow, a first side wall arranged on the first side of the bracket main body, and a first outlet formed in the first side wall; the second cavity comprises a second side wall arranged on the first side of the support body and a second inlet formed in the second side wall. A first space communicated with the first outlet and the second inlet is formed in the first side of the support body. Wherein the first outlet and the second inlet are communicated through a first space formed on the support main body, and the first outlet and the second inlet are separated, so that aerosol, condensed aerosol liquid drops or cigarette liquid can be prevented from flowing into the position of the first outlet through the second inlet, and the influence on the airflow sensor is avoided; and the working accuracy and reliability of the airflow sensor are improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic atomization, and in particular to an airflow sensor bracket, component and atomization device. Background Art

[0002] The atomizer is an electronic device used to heat and atomize a substrate so that the atomized substrate produces an inhalable aerosol. Usually, an airflow sensor is provided in the atomizer, which can convert the acoustic signal into an electrical signal. The diaphragm in the airflow sensor will vibrate under the action of the sound pressure, thereby changing the distance between the diaphragm and the plate, thereby causing a change in capacitance and outputting an electrical signal. The airflow sensor is mainly used in the atomizer to receive the user's inhalation signal, thereby controlling the start and stop of the atomizer.

[0003] In the existing atomizer device, due to improper setting of the airflow monitoring channel where the airflow sensor is located, the aerosol will flow back into the interior of the atomizer device after the user inhales. In particular, the aerosol, condensed aerosol droplets or smoke liquid are likely to flow back into the cavity where the airflow sensor is located through the airflow channel. After long-term inhalation, the accumulated aerosol droplets are likely to contaminate the airflow sensor, causing the airflow sensor to fail. Utility Model Content

[0004] The present application provides an airflow sensor bracket, assembly and atomization device, which are used to solve the problem that aerosol, condensed aerosol droplets or smoke liquid reflux easily affect the reliability of the airflow sensor.

[0005] In one embodiment, an airflow sensor bracket is provided, comprising: a bracket body, and a first cavity and a second cavity arranged on the bracket body; the first cavity comprises a first inlet for introducing airflow, a first side wall arranged on a first side of the bracket body, and a first outlet opened on the first side wall; the second cavity comprises a second side wall arranged on the first side of the bracket body, and a second inlet opened on the second side wall; a first space connecting the first outlet and the second inlet is formed on the first side of the bracket body.

[0006] In one embodiment, a main body side wall is provided on the first side of the bracket body; the first side wall is located at the lower part of the first outlet to form a first enclosure; the second side wall is located at the lower part of the second inlet to form a second enclosure; the area between the inner side of the main body side wall and the outer sides of the first enclosure and the second enclosure forms the first space.

[0007] In one embodiment, a liquid-absorbing component is accommodated in the first space.

[0008] In one embodiment, the first outlet and the second inlet are located opposite to each other; and the ratio of the circumference of the first outlet to the circumference of the first side wall is greater than or equal to 1 / 4.

[0009] In one embodiment, the second cavity is provided with an air inlet channel connected to the second inlet, and a reflux channel arranged outside the air inlet channel; the air inlet channel is provided with an air inlet; the reflux channel is provided with a reflux outlet; the air inlet is isolated from the reflux outlet.

[0010] In one embodiment, the air inlet is arranged on the second side of the bracket body and passes through to the first side; and / or the reflux outlet passes from the first side to the second side; and / or the first inlet is arranged on the second side.

[0011] In one embodiment, an airflow sensor assembly is also provided, comprising an airflow sensor bracket of any of the above embodiments, a protective member arranged in a first cavity of the airflow sensor bracket, and an airflow sensor arranged in the protective member, wherein the airflow sensor is configured to monitor the airflow introduced into the first inlet of the airflow sensor bracket.

[0012] In one embodiment, the airflow sensor assembly also includes a circuit board arranged on the second side of the bracket body of the airflow sensor bracket; the airflow sensor is fixedly mounted on the circuit board; the protective piece is sleeved on the periphery of the airflow sensor, and a sensing air inlet channel is provided between the protective piece and the circuit board; the sensing air inlet channel is connected to the first inlet of the airflow sensor bracket.

[0013] In one embodiment, the airflow sensor assembly also includes a seal installed on a first side of the airflow sensor bracket; the seal is provided with an airflow outlet connected to a second cavity of the airflow sensor bracket; a fourth side wall is provided on the periphery of the airflow outlet, and the fourth side wall is provided with a second notch matching a second inlet of the second cavity.

[0014] In one embodiment, an atomization device is further provided, comprising an airflow sensor assembly, wherein the airflow sensor assembly is the airflow sensor assembly of any of the above embodiments.

[0015] According to the airflow sensor bracket, assembly and atomization device of the above-mentioned embodiments, the first outlet and the second inlet are connected through a first space formed on the bracket body. Since the first outlet and the second inlet are separated, aerosol, condensed aerosol droplets or smoke liquid can be prevented from flowing into the position of the first outlet through the second inlet, thereby avoiding the influence on the airflow sensor and improving the accuracy and reliability of the airflow sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a first side angle of an airflow sensor bracket in an embodiment;

[0017] Figure 2 is a schematic diagram of the second side angle of the airflow sensor bracket in one embodiment;

[0018] Figure 3 is an exploded schematic diagram of a first side angle of an airflow sensor assembly in one embodiment;

[0019] Figure 4 is a cross-sectional schematic diagram of an airflow sensor assembly in one embodiment;

[0020] Figure 5 is another schematic cross-sectional view of an airflow sensor assembly in one embodiment;

[0021] Figure 6 is an exploded schematic diagram of a second side angle of an airflow sensor assembly in one embodiment;

[0022] Figure 7 is a schematic diagram of an atomization device in an embodiment;

[0023] Figure 8 A schematic cross-sectional view of an atomization device in an embodiment;

[0024] Fig. 9 for Figure 8 A partial enlarged schematic diagram of part A;

[0025] The reference numerals are as follows: 10-air flow sensor bracket, 11-bracket body, 111-first space, 112-first side, 113-body side wall, 114-reinforcement step, 115-second side, 12-first cavity, 121-first inlet, 122-first side wall, 123-first outlet, 124-first enclosure, 1241-top surface, 13-second cavity, 131-second inlet, 132-second side wall, 133-air inlet, 134-second enclosure, 135-air inlet channel, 136-second enclosure, 137-second air inlet, 138-second air inlet, 139-second air inlet, 140-second air inlet, 141-second air inlet, 142-second air inlet, 143-second air inlet, 144-second air inlet, 145-second air inlet, 146-second air inlet, 147-second air inlet, 148-second air inlet, 149-second air inlet, 150-second air inlet, 151-second air inlet, 152-second air inlet, 153-second air inlet, 154-second air inlet, 155-second air inlet, 156-second air inlet, 157-second air inlet, 158-second air inlet, 159-second air inlet, 160-second air inlet, 161-second air inlet, 162-second air inlet, 163-second air inlet, 164-second air inlet, 165-second air inlet, 166-second air inlet, 167-second air inlet, 168-second air inlet, 169-second air inlet, - reflux channel, 1361 - reflux outlet, 137 - reflux liquid absorption part, 14 - liquid absorption part, 20 - air flow sensor, 30 - protective part, 31 - top surface, 32 - third outlet, 33 - third side wall, 34 - first notch, 35 - sensor air inlet channel, 40 - circuit board, 50 - sealing part, 51 - air flow outlet, 52 - fourth side wall, 53 - second notch, 100 - atomization device, 101 - nozzle, 102 - atomization channel, 103 - main air inlet channel, 104 - atomization assembly, 105 - power supply. DETAILED DESCRIPTION

[0026] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0027] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0028] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0029] Aiming at the problem that aerosol, condensed aerosol droplets or smoke liquid reflux in existing product atomization devices easily affect the reliability of the airflow sensor, in the present application, the first outlet and the second outlet of the airflow sensor bracket are connected through the first space formed on the bracket body. Due to the separation of the first outlet and the second inlet, the aerosol, condensed aerosol droplets or smoke liquid can be prevented from flowing into the position of the first outlet through the second inlet, thereby avoiding the influence on the airflow sensor and improving the accuracy and reliability of the airflow sensor.

[0030] Please refer to Figure 1 to Figure 2 In one embodiment, an airflow sensor bracket 10 is provided, which mainly includes a bracket body 11, and a first cavity 12 and a second cavity 13 arranged on the bracket body 11. The airflow sensor bracket 10 can be used in an atomization device 100.

[0031] The first cavity 12 includes a first inlet 121, a first side wall 122 and a first outlet 123. The first inlet 121 is configured to introduce airflow, such as when the atomizing device 100 is sucked, negative pressure is formed, and the airflow enters the first cavity 12 from the first inlet 121.

[0032] The first side wall 122 is extended from the first side 112 of the bracket body 11 to form a cavity for the airflow sensor 20 and the protective member 30 to be disposed therein. The first outlet 123 is provided on the first side wall 122. After the airflow passes through the airflow sensor 20 and the protective member 30, the airflow is output through the first outlet 123.

[0033] The second cavity 13 includes a second side wall 132 , a second inlet 131 , etc. The second side wall 132 is extended from the first side 112 of the support body 11 to form a cavity for gas to flow through and provide an inhalation airflow for the atomizing device 100 . The second inlet 131 is provided on the second side wall 132 .

[0034] A first space 111 is formed on the first side 112 of the support body 11, which is connected to the first outlet 123 and the second inlet 131, as an air flow channel. When the atomizer 100 is inhaled, the air flow is output through the first outlet 123, passes through the first space 111, and then enters the second cavity 13 through the second inlet 131, and enters the atomization channel 102 of the atomizer 100.

[0035] Since the first outlet 123 and the second inlet 131 are separated and connected only through the first space 111, aerosol, condensed aerosol droplets or smoke liquid can be prevented from flowing into the first outlet 123 through the second inlet 131, thereby avoiding the influence on the airflow sensor 20 and improving the accuracy and reliability of the airflow sensor 20.

[0036] In one embodiment, the first side 112 of the bracket body 11 is provided with a body side wall 113. The first side wall 122 is located at the lower part of the first outlet 123 to form a first enclosure 124; the second side wall 132 is located at the lower part of the second inlet 131 to form a second enclosure 134. The area between the inner side of the body side wall 113 and the outer sides of the first enclosure 124 and the second enclosure 134 forms a first space 111.

[0037] In some embodiments, the main body side wall 113 is extended on the circumference of the bracket main body 11, and its height is equivalent to the height of the first side wall 122 and the second side wall 132. Furthermore, a reinforcing step 114 may be provided at a portion of the inner side of the main body side wall 113 and between the first side wall 122 and the second side wall 132 to enhance the rigidity of the bracket main body 11.

[0038] In one embodiment, the height of the first enclosure 124 is greater than the height of the second enclosure 134. When the aerosol, condensed aerosol droplets or smoke liquid reflux, they first enter the first space 111 through the second inlet 131, and the first enclosure 124 is relatively high, which can play a certain blocking role, preventing the aerosol, condensed aerosol droplets or smoke liquid from entering the first cavity 12 through the first outlet 123.

[0039] In one embodiment, a liquid absorbent 14 is placed in the first space 111. The liquid absorbent 14 can absorb the refluxed aerosol, condensed aerosol droplets or smoke liquid, etc., and can further avoid the influence on the airflow sensor 20. It can be understood that the liquid absorbent 14 can be a liquid absorbent cotton or other liquid absorbent 14 made of a material with liquid absorption ability. The shape of the liquid absorbent 14 can match the shape of the first space 111, and its height is lower than the height of the first enclosure 124.

[0040] In one embodiment, the first outlet 123 and the second inlet 131 are opposite to each other. In addition, the ratio of the circumference of the first outlet 123 to the circumference of the first side wall 122 is greater than or equal to 1 / 4; the ratio of the circumference of the second inlet 131 to the circumference of the second side wall 132 is greater than or equal to 1 / 4. The airflow can be output from the first outlet 123, pass through the first space 111, and directly enter the second cavity 13 from the second inlet 131, thereby reducing air resistance and improving the passing capacity of airflow.

[0041] In one embodiment, an air inlet channel 135 and a reflux channel 136 are provided in the second cavity 13. The air inlet channel 135 and the reflux channel 136 are both connected to the second inlet 131. In some embodiments, the reflux channel 136 is provided on one side of the air inlet channel 135, and the inlet of the reflux channel 136 is lower than the air outlet of the air inlet channel 135. Further, the outer wall of the air inlet channel 135 can also be provided in a tapered shape to facilitate the aerosol, condensed aerosol droplets or smoke liquid to flow out through the reflux channel 136, which can further prevent them from flowing into the first space 111 and the first cavity 12, thereby ensuring the normal operation of the airflow sensor 20.

[0042] The air inlet channel 135 is provided with an air inlet 133, which is used to introduce the main airflow into the atomizing channel 102 of the atomizing device 100, and bring out the atomized aerosol for inhalation. The reflux channel 136 is provided with a reflux outlet 1361, and the aerosol, condensed aerosol droplets or smoke liquid can be discharged through the reflux outlet 1361. It can be understood that the atomizing device 100 can also be provided with a reflux liquid absorbing member 137 at the reflux outlet 1361 to absorb the discharged aerosol, condensed aerosol droplets or smoke liquid, etc.

[0043] In some embodiments, the lead wire of the atomization assembly 104 may pass through the air inlet channel 135 and / or the return channel 136 and be electrically connected to the power supply 105. The power supply 105 supplies power to the atomization assembly 104 to heat and atomize the atomization substrate.

[0044] Furthermore, the air inlet 133 is isolated from the reflux outlet 1361 , which can prevent the discharged aerosol, condensed aerosol droplets or smoke liquid from contaminating the airflow inhaled by the air inlet 133 .

[0045] In one embodiment, the air inlet 133 is disposed on the second side 115 of the support body 11 and penetrates to the first side 112. The air inlet 133 is connected to the main air inlet channel 103 of the atomizing device 100 to introduce the main airflow for atomizing inhalation.

[0046] In one embodiment, the reflux outlet 1361 passes through the first side 112 of the bracket body 11 to the second side 115, so that the aerosol, condensed aerosol droplets or smoke liquid can be directed to the second side 115 of the bracket body 11, thereby preventing them from entering the first space 111 and entering the first cavity 12 through the first outlet 123.

[0047] In one embodiment, the first inlet 121 is disposed on the second side 115 of the bracket body 11. Airflow can enter from the second side 115 and then enter the sensor through the sensor inlet passage 35 of the protective member 30 to trigger the sensor action.

[0048] Please refer to Figure 3-6 In one embodiment, an airflow sensor assembly is provided, which mainly includes the airflow sensor bracket 10, the airflow sensor 20 and the protective member 30 of any of the above embodiments.

[0049] The airflow sensor 20 is installed in the protective member 30 to monitor whether there is airflow flowing in. The airflow sensor 20 can be a microphone or other similar sensors, which can trigger an action when airflow flows through, and generate an electrical signal to control the start and stop of the atomizing device 100.

[0050] The protective member 30 is disposed in the first cavity 12 of the airflow sensor bracket 10 and is sleeved on the periphery of the airflow sensor 20, so as to protect the airflow sensor 20. The airflow introduced by the first inlet 121 of the airflow sensor bracket 10 can trigger the airflow sensor 20 to operate, thereby generating an electrical signal, and controlling the start and stop of the atomization device 100.

[0051] In one embodiment, when the airflow sensor bracket 10 is provided with the first enclosure 124, the top surface 31 of the protection member 30 is located above the top surface 1241 of the first enclosure 124. Since there is a height difference between the top surface 31 of the protection member 30 and the plane where the top surface 1241 of the first enclosure 124 is located, condensed aerosol droplets and leaked liquid that drip onto the protection member 30 can be retained in the first space 111, and will not directly drip onto the third outlet 32 ​​opened at the upper portion of the protection member 30.

[0052] In one embodiment, the protective member 30 may further include a third outlet 32, a third side wall 33, and a first notch 34. The third side wall 33 is formed by extending upward from the periphery of the third outlet 32, and the first notch 34 is opened on the third side wall 33. The third outlet 32 ​​is connected to the first outlet 123 of the airflow sensor bracket 10 through the first notch 34, so that the airflow passing through the airflow sensor 20 can be discharged from the protective member 30 through the third outlet 32, and then enter the first space 111 through the first notch 34 and the first outlet 123.

[0053] In one embodiment, the airflow sensor assembly further includes a circuit board 40 disposed on the second side 115 of the support body 11 of the airflow sensor support 10. The airflow sensor 20 is fixedly mounted on the circuit board 40; the protective member 30 is sleeved around the airflow sensor 20, and a sensor air inlet passage 35 is provided between the protective member 30 and the circuit board 40. The sensor air inlet passage 35 is communicated with the first inlet 121 of the airflow sensor support 10. Figure 4 As shown, the airflow enters from the first inlet 121 , enters the sensing air inlet passage 35 , and then enters the airflow sensor 20 , triggering the airflow sensor 20 to generate an electrical signal, and the airflow then exits the protective member 30 through the third outlet 32 ​​.

[0054] In one embodiment, the airflow sensor assembly further includes a seal 50 mounted on the first side 112 of the airflow sensor bracket 10. The seal 50 is provided with an airflow outlet 51 in communication with the second cavity 13 of the airflow sensor bracket 10. A fourth side wall 52 is provided at the periphery of the airflow outlet 51, and the fourth side wall 52 is provided with a second notch 53 matching the second inlet 131 of the second cavity 13. The airflow from the first space 111 can enter the second cavity 13 through the opening formed by the second inlet 131 and the second notch 53, and then merge with the main airflow through the airflow outlet 51 and output to the atomization channel 102 of the atomization device 100.

[0055] In some embodiments, the protective member 30 and the sealing member 50 may be made of silicone, or other materials. Furthermore, the top of the third side wall 33 is closely connected to the inner wall of the sealing member 50, thereby reducing the aerosol, condensed aerosol droplets or smoke liquid from directly entering the third outlet 32.

[0056] Please refer to Figure 7-9 In one embodiment, an atomization device 100 is provided, which mainly includes the airflow sensor assembly of any of the above embodiments.

[0057] The atomizing device 100 may further include a nozzle 101, an atomizing channel 102, a main air inlet channel 103, an atomizing assembly 104 disposed in the atomizing channel 102, a power supply 105 for supplying power to the atomizing assembly 104, etc. These structures may be selected from various existing structures of the atomizing device 100 and will not be elaborated herein.

[0058] When the user inhales through the mouthpiece 101, negative pressure is formed in the second cavity 13. At this time, a path of air enters from the first inlet 121 of the first cavity 12, triggering the airflow sensor 20 to generate a control signal to control the atomization assembly 104 to work and generate aerosol. The airflow passing through the airflow sensor 20 enters the first space 111 through the first outlet 123, and enters the second cavity 13 through the second inlet 131.

[0059] One path of air enters the second cavity 13 from the main air inlet channel 103 through the air inlet 133 , merges with the air entering from the second inlet 131 , and enters the atomization channel 102 to bring out aerosol.

[0060] The present application avoids mutual interference between the main air inlet channel 103 and the sensing airway of the airflow sensor 20 by setting them separately. Moreover, the first outlet 123 and the second outlet of the airflow sensor bracket 10 are connected through the first space 111 formed on the bracket body 11. Due to the separation of the first outlet 123 and the second inlet 131, it is possible to avoid aerosol, condensed aerosol droplets or smoke liquid from flowing into the position of the first outlet 123 through the second inlet 131, thereby avoiding the influence on the airflow sensor 20 and improving the accuracy and reliability of the airflow sensor 20.

[0061] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. An airflow sensor bracket, characterized in that: include: A support body (11), and a first cavity (12) and a second cavity (13) arranged on the support body (11); The first cavity (12) comprises a first inlet (121) for introducing airflow, a first side wall (122) arranged on a first side (112) of the support body (11), and a first outlet (123) opened on the first side wall (122); The second cavity (13) comprises a second side wall (132) arranged on the first side (112) of the support body (11), and a second inlet (131) opened on the second side wall (132); A first space (111) communicating with the first outlet (123) and the second inlet (131) is formed on the first side (112) of the bracket body (11).

2. The airflow sensor bracket according to claim 1, characterized in that: The first side (112) of the bracket body (11) is provided with a body side wall (113); The first side wall (122) is located at the lower part of the first outlet (123) to form a first enclosure (124); The second side wall (132) is located at the lower part of the second inlet (131) to form a second enclosure (134); The area between the inner side of the main body side wall (113) and the outer sides of the first enclosure (124) and the second enclosure (134) forms the first space (111).

3. The airflow sensor bracket according to claim 1, characterized in that: The first space (111) contains a liquid absorbing component (14).

4. The airflow sensor bracket according to claim 1, characterized in that: The first outlet (123) and the second inlet (131) are located opposite to each other; The ratio of the circumference of the first outlet (123) to the circumference of the first side wall (122) is greater than or equal to 1 / 4.

5. The airflow sensor bracket according to claim 1, characterized in that: The second cavity (13) is provided with an air inlet channel (135) which is in communication with the second inlet (131), and a reflux channel (136) which is provided outside the air inlet channel (135); The air inlet channel (135) is provided with an air inlet (133); the reflux channel (136) is provided with a reflux outlet (1361); and the air inlet (133) is isolated from the reflux outlet (1361).

6. The airflow sensor bracket according to claim 5, characterized in that: The air inlet (133) is arranged on the second side (115) of the support body (11) and penetrates to the first side (112); and / or The return outlet (1361) extends from the first side (112) to the second side (115); and / or The first inlet (121) is disposed on the second side (115).

7. An airflow sensor assembly, characterized in that: It comprises an airflow sensor bracket (10) as described in any one of claims 1 to 6, a protective member (30) arranged in a first cavity (12) of the airflow sensor bracket (10), and an airflow sensor (20) arranged in the protective member (30), wherein the airflow sensor (20) is configured to monitor the airflow introduced into the first inlet (121) of the airflow sensor bracket (10).

8. The airflow sensor assembly according to claim 7, characterized in that: The airflow sensor assembly further comprises a circuit board (40) disposed on a second side (115) of a bracket body (11) of the airflow sensor bracket (10); The airflow sensor (20) is fixedly mounted on the circuit board (40); The protective member (30) is sleeved on the periphery of the airflow sensor (20), and a sensing air inlet passage (35) is provided between the protective member (30) and the circuit board (40); the sensing air inlet passage (35) is connected to the first inlet (121) of the airflow sensor bracket (10).

9. The airflow sensor assembly according to claim 7, characterized in that: The airflow sensor assembly further includes a seal (50) mounted on a first side (112) of the airflow sensor bracket (10); The sealing member (50) is provided with an airflow outlet (51) in communication with the second cavity (13) of the airflow sensor bracket (10); a fourth side wall (52) is provided on the periphery of the airflow outlet (51), and the fourth side wall (52) is provided with a second notch (53) matching the second inlet (131) of the second cavity (13).

10. An atomizing device, characterized in that: It comprises an airflow sensor assembly, wherein the airflow sensor assembly is the airflow sensor assembly as described in any one of claims 7-9.

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