Cleaning head

Abstract

The present application discloses a cleaning head comprising: a base configured to be capable of supporting a replaceable cleaning cloth; the suction nozzle assembly can be rotatably mounted on the base between a first position and a second position relative to the base, and the suction nozzle assembly comprises a suction nozzle with a dirty air inlet and a mounting arm which can be rotatably mounted on the base; in the first position, the suction nozzle is close to the ground to be cleaned and located on the front side of the base. In the second position, the suction nozzle leaves the ground to be cleaned and is located on the upper side of the base. The lock member is mounted on the base and releasably held in a first position in which the mounting arm is fixed to the base; the first spring component is used for providing reset force for enabling the mounting arm to drive the suction nozzle assembly to the second position when the mounting arm is released by the lock component; when the suction nozzle assembly is located at the first position, the actuating component can collide with an obstacle before the suction nozzle and is actuated during collision, the lock component is caused to release the mounting arm, and therefore the suction nozzle can be automatically lifted when encountering the obstacle, and comprehensive cleaning is achieved.

Description

Technical Field

[0001] This application relates to the technical field of surface cleaning equipment, and particularly to a cleaning head. Background Art

[0002] With the improvement of people's living standards, the requirements for cleaning tools are getting higher and higher. Ordinary brooms and mops can no longer meet the cleaning requirements, so mops with a dust suction function have emerged. Currently, the structure of a mop with a dust suction function is as follows: there is a suction nozzle in front of the cleaning head, and a wet mop is behind the cleaning head. When cleaning, the suction nozzle first sucks away large particles of garbage, and then the wet mop further removes dust and stains on the ground. When cleaning a wall or other corners, since the suction nozzle in front occupies a certain space, the wet mop behind may not be able to achieve a comprehensive cleaning, affecting the user experience. Summary of the Invention

[0003] To solve the above technical problems, the purpose of this application is to provide a cleaning head in which the suction nozzle can automatically lift when encountering an obstacle. After the suction nozzle automatically lifts, the user can push the cleaning head forward to continue cleaning, thereby achieving comprehensive cleaning.

[0004] To achieve the above object, this application adopts the following technical solution: A cleaning head, comprising: a base configured to support a replaceable cleaning cloth; a suction nozzle assembly rotatably mounted on the base between a first position and a second position relative to the base, the suction nozzle assembly including a suction nozzle having a dirty air inlet and at least one mounting arm rotatably connected to the base; in the first position, the suction nozzle is close to the ground to be cleaned and is located on the front side of the base; in the second position, the suction nozzle is away from the ground to be cleaned and is located on the upper side of the base; at least one locking member mounted on the base and releasably holding the at least one mounting arm in the first position fixed to the base; at least one first spring member for providing a restoring force to drive the at least one mounting arm to drive the suction nozzle assembly to the second position when the at least one mounting arm is released by the at least one locking member; and an actuating member movably mounted on the suction nozzle between a first actuating position and a second actuating position and configured to be actuated when colliding with an obstacle located in front of the suction nozzle before the suction nozzle when the suction nozzle assembly is in the first position, the actuating member and the at least one locking member being configured such that the movement of the actuating member from the first actuating position to the second actuating position causes the at least one locking member to release the at least one mounting arm.

[0005] In the above technical solution, further preferably, the cleaning head further includes: at least one second spring member, and the at least one locking member is supported on the base by the at least one second spring member. In the above technical solution, further preferably, in the first position, the actuating member contacts the locking member.

[0006] In the above technical solution, further preferably, the cleaning head further includes: at least one third spring member, and the actuating member is supported on the nozzle assembly by the at least one third elastic member.

[0007] In the above technical solution, further preferably, the base has a front end wall surface; in the second position, the nozzle is substantially flush with the front end wall surface of the base.

[0008] In the above technical solution, further preferably, the front end wall surface of the base is configured to be partially covered by the replacement cleaning cloth when the replacement cleaning cloth is supported on the base. In the above technical solution, further preferably, the top of the base has fixing portions for fixing the four corners of the replaceable cleaning cloth.

[0009] In the above technical solution, further preferably, the number of the mounting arms is a pair.

[0010] In the above technical solution, further preferably, the actuating member includes a flexible protrusion; in the first position of the nozzle assembly, the flexible protrusion protrudes forward relative to the front wall surface of the nozzle.

[0011] In the above technical solution, further preferably, in the first position of the nozzle assembly, there is a gap between the nozzle and the base.

[0012] When the cleaning head of the present application touches an obstacle such as a wall or furniture, the actuating member collides with the obstacle before the nozzle, and the actuating member horizontally moves from the first actuating position to the second actuating position, so that the nozzle moves from the first position to the second position. At this time, the nozzle assembly is lifted and is generally higher than the base, and the user can push the base to continue moving forward, so that the cleaning sheet can clean corners such as the corner of a wall. After the user finishes cleaning corners such as the corner of a wall, pressing the nozzle assembly by hand or stepping on it with the foot can keep the nozzle assembly in the first position, and normal cleaning can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic perspective view of a cleaning device provided by the present application; Figure 2For Figure 1 Schematic three-dimensional structure diagram of the cleaning device in after the cleaning head; Figure 3 For Figure 1 Top view of the cleaning head of the cleaning device in ; Figure 4 For Figure 3 Schematic three-dimensional structure diagram of the suction nozzle assembly of the cleaning head in at the first position; Figure 5 For Figure 4 Schematic three-dimensional structure diagram of the suction nozzle assembly of the cleaning head in at the second position; Figure 6 For Figure 4 Schematic three-dimensional structure diagram of the cleaning head in after being cut along the AA direction; Figure 7 For Figure 4 Top view of the cleaning head in after being cut along the AA direction; Figure 8 For Figure 7 Partial enlarged view at B in ; Figure 9 For Figure 8 Schematic diagram of the actuating member after moving from the first actuating position to the second position in ; Figure 10 Schematic three-dimensional structure diagram of the suction nozzle assembly.

[0014] Wherein: 100, cleaning device; 10, cleaning head; 101, base; 1011, fixing part; 102, suction nozzle assembly; 1021, suction nozzle; 10211, dirty air inlet; 1022, mounting arm; 1023, connecting member; 10221, groove; 103, locking member; 1031, triggering part; 1032, hook part; 1033, main body part; 104, actuating member; 1041, first member; 1042, protrusion; 1043, second member; 10431, rear end part; 1044, third spring member; 1045, guide post; 105, connecting part; 1051, joint piece; 1052, release button; 1053, fixing piece; 106, second spring member; 107, receiving groove; 20, upright body; 201, handle; 202, body frame; 203, motor assembly. Detailed implementation manners

[0015] To describe in detail the technical content, structural features, achieved objectives and effects of the application, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment.

[0016] As used in this application, "up" and "down" refer to up and down as shown in the Figure 1 accompanying drawings; "front" and "back" in this application refer to front and back as shown in the Figure 1 accompanying drawings; "left" and "right" in this application refer to front and back as shown in the Figure 1 accompanying drawings.

[0017] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium.

[0018] As Figure 1 shown, a cleaning device 100 is provided. The cleaning device 100 includes a cleaning head 10 and an upright body 20. Among them, the upright body 20 and the cleaning head 10 are detachably connected. Further, as Figure 2 shown, after the upright body 20 is detached from the cleaning device 100, it can be placed separately on a plane. The upright body 20 includes a handle 201, a body frame 202, and a motor assembly 203. Among them, the handle 201 and the body frame 202 are detachably connected. The body frame 202 is integrally annular and has an annular space. The motor assembly 203 is fixed in the annular space, and the lower end of the motor assembly 203 is detachably connected to the body frame 202. The motor assembly 203 provides a power source and a dust accommodation space. Exemplarily, the motor assembly 203 includes a battery pack, a suction motor, and a dust cup. The inlet of the dust cup is connected to the cleaning head 10, the outlet of the dust cup is communicated with the suction motor, and the motor assembly 203 has an air outlet. To facilitate dust cleaning, the dust cup can be integrally detached from the motor assembly 203 or the cup cover of the dust cup can be released with one key.

[0019] Combined with Figures 3 to 7, the cleaning head 10 includes a base 101 and a nozzle assembly 102. Among them, the base 101 is located at the rear side of the cleaning head 10, and the nozzle assembly 102 is located at the front side of the cleaning head 10. The base 101 and the nozzle assembly 102 are rotatably connected.

[0020] In some embodiments, the base 101 is configured to be able to support a replaceable cleaning cloth. Exemplarily, there is an adhesive layer at the bottom of the base 101, and the cleaning cloth can be adhered to this adhesive layer. When the cleaning cloth needs to be replaced, the user tears off the cleaning cloth. Exemplarily, there can also be 4 fixing parts 1011 for the replaceable cleaning cloth on the top of the base 101. After the replaceable cleaning cloth is placed under the base 101, it is folded upwards and covers the front and rear wall surfaces of the base 101, and is inserted into the fixing parts 1011 to realize the fixation of the replaceable cleaning cloth. Of course, other methods can also be used to fix the cleaning cloth, and this embodiment does not limit this.

[0021] The nozzle assembly 102 includes a nozzle 1021 and a mounting arm 1022. The nozzle 1021 and the mounting arm 1022 are fixedly connected, and the mounting arm 1022 is rotatably connected to the base 101. The movement of the nozzle 1021 is driven by the movement of the mounting arm 1022. Combining Figures 1 to 4 , the nozzle 1021 extends along the left - right direction, and the mounting arm 1022 extends along the front - rear direction. In some embodiments, the number of the mounting arms 1022 is at least 1, and at this time the mounting arm 1022 is connected to the middle position of the nozzle 1021; in some embodiments, the number of the mounting arms 1022 is 2, as Figure 3 、 4 shown, the two mounting arms 1022 are respectively located on both sides of the middle position of the nozzle 1021, and the two mounting arms 1022 are connected by a connecting piece 1023; in some embodiments, the number of the mounting arms 1022 can be 3 or more, and their relative positions with respect to the nozzle 1021 can be arranged with reference to Figure 3 and Figure 4 , and will not be elaborated here.

[0022] The nozzle 1021 has a dirty air inlet, and there is a pipe (not shown in the figure) on the base 101. One end of this pipe is connected to the nozzle 1021, and the other end is connected to the inlet of the dust cup, so that an air circulation path is formed through the nozzle 1021, the dust cup, the suction motor, and the air outlet.

[0023] The nozzle assembly 102 can rotate between a first position and a second position relative to the base 101. Exemplarily, as Figure 4 shown, when the nozzle assembly 102 is in the first position, the nozzle assembly 102 is close to the surface to be cleaned. At this time, the nozzle assembly 102 is located at the front side of the base 101, as Figure 5As shown, the nozzle assembly 102 is in the second position, and the nozzle assembly 102 is separated from the ground to be cleaned. At this time, the nozzle assembly 102 is located on the upper side of the base 101.

[0024] The cleaning head 10 further includes a locking member 103. The locking member 103 is mounted on the base 101. The locking member 103 can lock the mounting arm 1022 so as to hold the nozzle assembly 102 in the first position, and can release the mounting arm 1022 in the first position under the action of an external force so that the nozzle assembly 102 moves to the second position. In some embodiments, the number of the locking members 103 is at least one. One mounting arm 1022 can correspond to one locking member 103, or can correspond to multiple locking members 103.

[0025] The cleaning head 10 further includes an actuating member 104. The actuating member 104 is mounted on the nozzle assembly 102. In the forward direction, the actuating member 104 protrudes relatively from the nozzle assembly 102. In some embodiments, Figure 3 , Figure 4 , the number of the mounting arms 1022 is 2. The actuating member 104 includes a first member 1041 extending in the left-right direction and a protrusion 1042 located on the front wall surface of the first member 1041. The front wall surface of the first member 1041 and the front wall surface of the nozzle 1021 are substantially flush in the up-down direction. In the forward direction, the protrusion 1042 protrudes relative to the front wall surface of the nozzle 1021. Further, the protrusion 1042 is made of a flexible material and is a flexible protrusion.

[0026] As Figure 8 shown, the actuating member 104 has a first actuating position in the front-rear direction. As Figure 9As shown, the actuating member has a second actuating position in the front-rear direction, where the first actuating position is before the second actuating position. The movement of the actuating member 104 between the first actuating position and the second actuating position is a translational movement. The first actuating position is the position of the actuating member 104 when the cleaning device 100 is in normal use, and the second actuating position is the position where the locking member 103 unlocks the mounting arm 1022. In this application, when the cleaning device 100 is in normal use, the nozzle assembly 102 is in the first position and the actuating member 104 is in the first actuating position. When there is an obstacle in the forward direction of the cleaning head 10, the actuating member 104 can collide with the obstacle before the nozzle assembly 102. Specifically, the protrusion 1042 on the actuating member 104 collides with the obstacle before the nozzle 1021. After the actuating member 104 collides with the obstacle, the actuating member 104 moves from the first actuating position to the second actuating position, simultaneously causing the locking member 103 to release the mounting arm 1022, so that the mounting arm 1022 drives the nozzle 1021 to move from the first position to the second position. When the nozzle assembly 102 is in the second position, the nozzle assembly 102 is lifted and is generally higher than the base 101. The user can push the base 101 to move forward continuously, so that the cleaning sheet can clean the position where the nozzle assembly 102 is not lifted, thereby realizing the cleaning of corners such as the corner of a wall. And to avoid the nozzle assembly 102 touching an obstacle when the cleaning head 10 continues to move forward at this time, the nozzle 1021 is at the thickness of the base 101 at this time. Specifically, in a plane perpendicular to the thickness direction of the base 101, the projection of the base 101 covers the projection of the nozzle assembly 102. As Figure 3 , 6 shown, the base 101 has a front end wall surface 1012. When the nozzle 1021 is in the second position, the nozzle 1021 is generally flush with the front end wall surface of the base 101.

[0027] When the nozzle assembly 102 is in the first position, there is a gap 1013 between the nozzle 1021 and the front end wall surface 1012 of the base 101. The existence of this gap 1013 is to prevent the nozzle assembly 102 from interfering with the base 101 during the movement from the first position to the second position, and it can also keep the replaceable cleaning cloth installed at the bottom of the base 101 away from the nozzle 1021.

[0028] Furthermore, the cleaning head 10 further includes a connecting portion 105 connected to the upright body 20. Furthermore, referring to Figure 3 and Figure 4, the connecting part 105 includes a joint piece 1051, a release button 1052 and a fixing piece 1053. The release button 1052 is located on the joint piece 1051. When the user presses the release button 1052, the cleaning head 10 and the upright body 20 can be disassembled. The joint piece 1051 is rotatably connected to the fixing piece 1053, and the fixing piece 1053 is fixedly arranged on the base 101. Therefore, during cleaning, when the user rotates the upright body 20, it drives the rotation of the joint piece 1051 relative to the fixing piece 1053, thereby realizing the rotation of the upright body 20 relative to the cleaning head 10.

[0029] The cleaning head 10 further includes a first spring member (not shown in the figure). When the mounting arm 1022 is released by the locking member 103, the first spring member provides a restoring force to drive the mounting arm 1022 to drive the suction nozzle assembly 102 to the second position. In some embodiments, the mounting arm 1022 is mounted on the fixing piece 1053 and is rotatably connected to the fixing piece 1053. The fixing piece 1053 has a mounting groove, and the first spring member is located in the mounting groove and abuts against the mounting arm 1022. Further, the first spring member is a torsion spring. When the suction nozzle assembly 102 is in the first position, the torsion spring is compressed. When the mounting arm 1022 is released by the locking member 103, the torsion spring releases its pressure to drive the mounting arm 1022 to swing upward, thereby driving the suction nozzle assembly 102 to move to the second position.

[0030] The cleaning head 10 further includes a second spring member 106. The locking member 103 is supported on the base 101 by the second spring member 106. Exemplarily, at least one locking member 103 corresponds to one second spring member 106. Therefore, the number of the second spring members 106 can be one or more. In some embodiments, the base 101 is further provided with a receiving groove 107 for placing the second spring member 106. One receiving groove 107 can accommodate one second spring member 106 or multiple second spring members 106.

[0031] The actuating member 104 further includes a third spring member 1044. The actuating member 104 is supported on the suction nozzle assembly 102 by the third elastic member. The number of the third spring members 1044 can be one or more. In some embodiments, combined Figures 3 to 7 , the number of the mounting arms 1022 is two. The actuating member 104 further includes a second member 1043, a third spring member 1044 and a guide post 1045. Among them, the second member 1043 is connected to the first member 1041 and extends along the front-rear direction. The third spring member 1044 and the guide post 1045 are both located behind the first member 1041. One end of the third spring member 1044 passes through the guide post 1045, and the other end passes through a limiting member extending backward provided on the first member 1041. The second member 1043 corresponds to the locking member 103 one by one. In Figure 3Among them, the number of the second components 1043 is 2, and the number of the third spring parts 1044 is 2.

[0032] In some embodiments, in combination with Figures 3 to 7 , the number of the mounting arms 1022 is 2. When the suction nozzle assembly 102 is in the first position, the rear end portion 10431 of the second component 1043 abuts against the locking component 103. When the protrusion 1042 touches an obstacle, when the protrusion 1042 moves backward, it drives the first component 1041 to move backward, and further drives the second component 1043 to move backward. The rear end portion 10431 of the second component 1043 pushes the locking component 103 to trigger the unlocking of the mounting arm 1022. During this process, the first component 1041 squeezes the third spring member 1044, and the guide post 1045 plays a role in limiting and guiding the third spring member 1044. And after the locking component 103 releases the mounting arm 1022, the third spring member 1044 provides a force for resetting the actuating component 104.

[0033] In some embodiments, in combination with Figures 3 to 7, the number of the mounting arms 1022 is two. The locking member 103 includes a trigger portion 1031, a hook portion 1032 and a main body portion 1033. Both the trigger portion 1031 and the hook portion 1032 extend from the main body portion 1033 towards the mounting arm 1022, and the trigger portion 1031 is located above the hook portion 1032 as a whole. The trigger portion 1031 is in contact and cooperation with the rear end portion 10431 of the second member 1043, so as to trigger the release of the mounting arm 1022. Exemplarily, the trigger portion 1031 has a first inclined surface, and the rear end portion 10431 has a second inclined surface. The cooperation between the first inclined surface and the second inclined surface can convert the movement of the second member 1043 in the front-rear direction into the movement of the main body portion 1033 in the left-right direction. The mounting arm 1022 has a groove 10221. When the nozzle assembly 102 is in the first position, one end of the mounting arm 1022 is located in the groove 10221. In the left-right direction, the depth of the groove 10221 is less than or equal to the thickness of the mounting arm 1022. When the protrusion 1042 touches an obstacle, the second member 1043 moves backward, and the rear end portion 10431 of the second member 1043 pushes the trigger portion 1031. The trigger portion 1031 converts the movement in the front-rear direction into the movement in the left-right direction, drives the main body portion 1033 to move in the first direction as a whole and compresses the second spring member 106. The hook portion 1032 disengages from the groove 10221, thereby releasing the mounting arm 1022, so that the nozzle assembly 102 moves to the second position as a whole. Among them, the first direction is the direction away from the mounting arm 1022. At the same time, the second spring member 106 releases its stress and drives the main body portion 1033 and the hook portion 1032 to move in the second direction, where the second direction is the opposite direction of the first direction. When it is necessary to return the nozzle assembly 102 to the first position again, the user presses or steps on the nozzle assembly 102 by hand or foot. When the lower surface of the mounting arm 1022 contacts the hook portion 1032 during the downward movement of the mounting arm 1022, the hook portion 1032 is squeezed inward to move it in the first direction until it returns to the groove 1022 again to realize the locking of the mounting arm 1022. At this time, the reset of the nozzle assembly 102 is completed.

[0034] The above introduces the method of realizing the release and locking of the mounting arm by the mechanical cooperation of setting the groove 10221 and the hook portion 1032. In some embodiments, the groove 10221 and the hook portion 1032 can be replaced by two magnetic components. During the movement of the main body portion 1033 in the first direction as a whole, the magnetic suction force of the two magnetic components is overcome, so that the mounting arm 1022 is released. When the mounting arm 1022 moves downward, the suction force of the two magnetic components drives the main body portion 1033 to move in the second direction, so that the two magnetic components are attracted to each other, realizing the locking of the mounting arm 1022.

[0035] In some embodiments, such as Figure 10As shown, a relatively wide dirty air inlet 10211 is provided below the front wall of the suction nozzle 1021, enabling large particles to be inhaled into the suction nozzle 1021. Sealing strips are provided below the rear wall, left wall, and right wall of the suction nozzle 1021, achieving good air duct sealing.

[0036] The working principle of this application is as follows: When the user pushes the cleaning device 100 forward for cleaning, when the cleaning head 10 touches an obstacle such as a wall or furniture, the protrusion 1042 on the actuating member 104 collides with the obstacle before the suction nozzle 1021. The actuating member 104 moves horizontally from the first actuating position to the second actuating position, simultaneously causing the locking member 103 to release the mounting arm 1022, so that the mounting arm 1022 drives the suction nozzle 1021 to move from the first position to the second position. At this time, the suction nozzle assembly 102 is lifted and is generally higher than the base 101. The user can push the base 101 forward continuously, enabling the cleaning sheet to clean corners such as the corner of a wall. After the user finishes cleaning corners such as the corner of a wall, manually press or step on the suction nozzle assembly 102. When the mounting arm 1022 moves downward, the locking member 103 re-locks the mounting arm 1022, keeping the suction nozzle assembly 102 in the first position and enabling normal cleaning.

[0037] The above shows and describes the basic principle, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of this application. Without departing from the spirit and scope of this application, this application will have various changes and improvements. The scope of protection required by this application is defined by the appended claims, the specification, and their equivalents.

Claims

1. A cleaning head, comprising: A base configured to support a replaceable cleaning cloth; A nozzle assembly rotatably mounted on the base between a first position and a second position relative to the base. The nozzle assembly includes a nozzle having a dirty air inlet and at least one mounting arm rotatably attached to the base. In the first position, the nozzle is close to the ground to be cleaned and located at the front side of the base. In the second position, the nozzle is away from the ground to be cleaned and located at the upper side of the base; At least one locking member mounted on the base and releasably holding the at least one mounting arm fixed to the base in the first position; At least one first spring member for providing a restoring force to drive the at least one mounting arm to drive the nozzle assembly to the second position when the at least one mounting arm is released by the at least one locking member; And An actuating member movably mounted on the nozzle between a first actuating position and a second actuating position and configured to be actuated when it collides with an obstacle located in front of the nozzle before the nozzle when the nozzle assembly is in the first position. The actuating member and the at least one locking member are configured such that the movement of the actuating member from the first actuating position to the second actuating position causes the at least one locking member to release the at least one mounting arm.

2. The cleaning head according to claim 1, characterized in that, It further includes: At least one second spring member, and the at least one locking member is supported on the base by the at least one second spring member.

3. The cleaning head according to claim 1, wherein, In the first position, the actuating member contacts the locking member.

4. The cleaning head according to claim 1, wherein, It further includes: At least one third spring member, and the actuating member is supported on the nozzle assembly by the at least one third elastic member.

5. The cleaning head according to claim 1, characterized in that, The base has a front end wall surface. In the second position, the nozzle is substantially flush with the front end wall surface of the base.

6. The cleaning head according to claim 5, characterized in that, The front end wall surface of the base is configured to be partially covered by the replaceable cleaning cloth when the replaceable cleaning cloth is supported on the base.

7. The cleaning head according to claim 5, characterized in that, The top of the base has fixing portions for fixing the four corners of the replaceable cleaning cloth.

8. The cleaning head according to claim 1, characterized in that, The number of the mounting arms is a pair.

9. The cleaning head according to claim 1, wherein, The actuating member includes a flexible protrusion. In the first position of the nozzle assembly, the flexible protrusion protrudes forward relative to the front wall surface of the nozzle.

10. The cleaning head according to claim 1, wherein, In the first position of the nozzle assembly, there is a gap between the nozzle and the base.

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