Cleaning head and surface cleaning device

Abstract

The present disclosure provides a cleaning head, comprising: a main body, an airflow channel formed inside; a cleaning arm pivotally connected with the main body, the cleaning arm being able to pivot relative to the main body; a positioning mechanism, when no external force acts on the cleaning arm, the positioning mechanism positions the cleaning arm in a substantially position protruding outward relative to the main body; the positioning mechanism comprises: a spring member mounted on the cleaning arm; an actuating arm formed integrally with the cleaning arm, configured to cause the spring member to deform when the cleaning arm is pivoted relative to the main body in a first direction under the drive of an external force; a positioning member inhibiting the spring member from deforming; when the cleaning arm is pivoted in the first direction to a limit position, at least a part of the cleaning arm is located within the vertical projection range of the main body, and the opening and the airflow channel are always in fluid communication during the pivoting of the cleaning arm. The present disclosure also provides a surface cleaning device.

Description

Technical Field

[0001] This disclosure relates to a cleaning head and a surface cleaning device. Background Technology

[0002] Currently, classic vacuum surface cleaning devices typically consist of a main body containing a vacuum source that generates suction to draw in dust, an extension rod extending from the main body, and a cleaning head connected to the end of the extension rod and moving across the floor surface. Typically, the cleaning head needs to be designed to be wider than the main body of the surface cleaning device to effectively remove dust from large areas of the floor surface in a lateral direction. However, this constant-width cleaning head is usually fixed in place, making it difficult to flexibly adjust the angle and reach into various complex and confined spaces. Utility Model Content

[0003] This disclosure provides a cleaning head and a surface cleaning device.

[0004] According to one aspect of this disclosure, a cleaning head is provided, comprising:

[0005] The main body has internal airflow channels;

[0006] A cleaning arm is pivotally connected to the main body, the cleaning arm being pivotable relative to the main body, the cleaning arm having an open opening in fluid communication with the airflow channel, and through which particles are drawn into the surface to be cleaned;

[0007] A positioning mechanism, which positions the cleaning arm in a basic position protruding relative to the main body when no external force is applied to it; the positioning mechanism includes:

[0008] A spring component is mounted on the cleaning arm, and it deforms when the cleaning arm pivots.

[0009] The actuator arm is integral with the cleaning arm and is configured to cause the spring member to deform when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force.

[0010] A positioning element is formed on the main body and configured to suppress deformation of the spring element when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force;

[0011] When the cleaning arm pivots to its limit position along the first direction, at least a portion of the cleaning arm is located within the vertical projection range of the body, and the opening and airflow channel remain in fluid communication during the pivoting process of the cleaning arm.

[0012] According to one example of this disclosure, the spring element includes a torsion spring having a first arm located at the beginning position of the torsion spring and a second arm located at the end position of the torsion spring.

[0013] According to one example of this disclosure, when the cleaning arm is in the basic position, the actuating arm is located between the first and second arms of the spring member.

[0014] According to one example of this disclosure, when the cleaning arm is in its basic position, at least a portion of the cleaning arm is located to the side of the body.

[0015] According to one example of this disclosure, when the cleaning arm pivots relative to the body in a first direction under the drive of an external force, the actuating arm causes the first arm of the spring to deflect, and the positioning member restricts the second arm of the spring to remain stationary so that the spring deforms.

[0016] According to one example of this disclosure, when the cleaning arm is pivoted relative to the body in a second direction opposite to the first direction under the drive of an external force, the actuating arm causes the second arm of the spring to deflect, and the positioning member restricts the first arm of the spring to remain stationary so that the spring deforms.

[0017] According to one example of this disclosure, when the cleaning arm is pivoted in the second direction to the second extreme position, at least a portion of the cleaning arm is located in front of the body, and the opening and the airflow channel remain in fluid communication throughout the pivoting process of the cleaning arm.

[0018] According to one example of this disclosure, the cleaning arm includes a first sleeve, and the body includes a second sleeve, the second sleeve being fitted into the first sleeve to achieve a pivotal connection between the cleaning arm and the body.

[0019] According to one example of this disclosure, the actuating arm is formed at the end of the first sleeve, and the spring is wound in the annular groove 1081 of the second sleeve.

[0020] According to another aspect of this disclosure, a surface cleaning apparatus is provided, comprising:

[0021] A vacuum source that generates suction to draw in dust;

[0022] Cleaning head, the cleaning head comprising:

[0023] The main body has an internal airflow channel that is in fluid communication with the vacuum source.

[0024] A cleaning arm is pivotally connected to the main body, the cleaning arm is pivotable forward or backward relative to the main body, the cleaning arm has an open opening that is in fluid communication with the airflow channel and through which particles are sucked into the surface to be cleaned;

[0025] A positioning mechanism, which positions the cleaning arm in a basic position protruding relative to the main body when no external force is applied to it; the positioning mechanism includes:

[0026] A spring component is mounted on the cleaning arm, and it deforms when the cleaning arm pivots.

[0027] The actuator arm is integral with the cleaning arm and is configured to cause the spring member to deform when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force.

[0028] A positioning element is formed on the main body and configured to suppress deformation of the spring element when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force;

[0029] When the cleaning arm pivots to its limit position along the first direction, at least a portion of the cleaning arm is located within the vertical projection range of the body, and the opening and airflow channel remain in fluid communication during the pivoting process of the cleaning arm. Attached Figure Description

[0030] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0031] Figure 1 This is a three-dimensional schematic diagram of a cleaning head according to an example of this disclosure.

[0032] Figure 2 This is an exploded view of a cleaning head according to an example of this disclosure.

[0033] Figure 3 This is another exploded schematic diagram of a cleaning head according to an example of this disclosure.

[0034] Figure 4 This is an internal schematic diagram of a cleaning head according to an example of this disclosure.

[0035] Figure 5 This is an internal schematic diagram of the body of a cleaning head according to an example of this disclosure.

[0036] Figure 6 This is a three-dimensional schematic diagram of the cleaning arm of a cleaning head according to an example of this disclosure.

[0037] Figure 7 This is a schematic diagram of a positioning mechanism for a cleaning head according to an example of this disclosure.

[0038] Figure 8This is a schematic diagram illustrating the engagement of a positioning mechanism and a flow channel forming element of a cleaning head according to an example of this disclosure.

[0039] Figure 9 This is a schematic diagram illustrating the cooperation between the positioning mechanism of the cleaning head and the cleaning arm, according to an example of this disclosure.

[0040] Figure 10 This is a perspective view of the spring component of a cleaning head according to an example of this disclosure.

[0041] Figure 11 This is another internal schematic diagram of a cleaning head according to an example of this disclosure. Detailed Implementation

[0042] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0043] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0045] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0046] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0047] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., pivoted 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0048] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0049] The following detailed description of the example implementation is with reference to the accompanying drawings. The same numbers in different drawings may identify the same or similar elements.

[0050] In complex home environments, there are often narrow spaces, which are also places where dust easily accumulates. Traditional handheld surface cleaners typically come with multiple cleaning heads. Standard hard-bottom cleaning heads are usually configured with a fixed horizontal width, ensuring a wide range of suction for dirt particles on the floor during back-and-forth movement. For confined spaces, traditional handheld surface cleaners often have a dedicated narrow-space nozzle. However, changing and storing these different cleaning heads can add an extra burden to the user.

[0051] The cleaning head disclosed herein has a body that can be connected to the suction pipe of a vacuum surface cleaning device, through which dust flows; and a cleaning arm connected to the body, forming an open suction space that allows dust to be sucked in. The cleaning arm can rotate forward or backward along the floor surface. When an external force is applied to the cleaning arm, it can first rotate forward or backward relative to the body along the floor surface, causing the swing amplitude of the cleaning arm to tend towards the contraction of the body. When no external force is applied to the surface cleaning device housing, the surface cleaning device housing protrudes to the left or right relative to the body. During the rotation of the cleaning arm, the suction space remains unobstructed, thus enabling cleaning of confined spaces without the need for additional cleaning heads for replacement, reducing the complexity of user operation.

[0052] like Figure 1 As shown, the cleaning head 100 has a body 102 for connection to the main body of a surface cleaning device and pivotable cleaning arms 104, 106 connected to the sides of the body 102. In one example, a pair of symmetrical cleaning arms 104, 106 are arranged on both sides of the body 102. Figure 1 The cleaning arms 104 and 106 shown protrude to both sides of the nozzle body 102 relative to it, as described below. Figure 1 The cleaning arms 104 and 106 shown are in their initial free position, referred to as the "basic position". As indicated by the arrow in Figure 1, the cleaning arms 104 and 106 can rotate forward or backward along the floor surface around their connection with the nozzle body 102.

[0053] like Figure 2 As shown, the main body 102 has a base 101, a cover 103, and a flow channel forming member 105 is provided in the space between the base 101 and the cover 103.

[0054] The cover 103 is rectangular box-shaped with its opening facing downwards, allowing it to completely cover the base 101 during installation. A recess 1031 is formed at the rear of the cover 103, extending forward from the rear end. The space defined by the recess 1031 is used to pivot the hose of the cleaning head assembly, which communicates with the interior of the flow channel forming member 105.

[0055] like Figure 3 As shown, the base 101 supports the flow channel forming member 105. The flow channel forming member 105 includes a connecting end rotatably connected to the cleaning arms 104 and 106, and includes a sleeve 108 that defines a fluid channel. The connecting end of the cleaning arms 104 and 106 includes a sleeve 110 that defines a fluid channel. The sleeves 108 and 110 are interlocked and pivot freely. Thus, the fluid channel formed by the sleeves 108 and 110 creates a fluid passage from the openings of the cleaning arms 104 and 106 to the interior of the flow channel forming member 105.

[0056] like Figure 3 As shown, the base 101 forms a space S in front of the base plate 1011 for mounting the positioning mechanism 112. Specifically, as shown in Figure 4, the positioning mechanism 112 has a main body 1121 and a through hole through the main body 1121, forming a space with openings at the top and bottom. The sleeves 108 and 110 are installed therein to allow the sleeves 108 and 110 to pivot freely within them.

[0057] As shown in Figure 5, the base 101 has a through hole 1012 that passes through the base plate 1011. When the positioning mechanism 112 is placed in the base 101, the through hole 1012 is aligned with the through hole of the positioning mechanism 112. When the positioning mechanism 112 is fixed on the base 101, the through hole of the positioning mechanism 112 is coaxial with the through hole 1012 of the base 101.

[0058] The cleaning arms 104 and 106 are symmetrical to each other. In the following description, the structure of one cleaning arm 104 is described, while the structure of the other cleaning arm 106 is omitted.

[0059] like Figure 6 As shown, the cleaning arm 104 has a housing 1041 forming a suction space with a downward opening 112, and a simplified cylindrical sleeve 110 protruding upward from the upper surface of the housing 1041 (as shown). Figure 3 shown).

[0060] Sleeve 110 protrudes upward from the upper surface of housing 1041 and is inserted into positioning mechanism 112. After sleeve 110 is inserted into positioning mechanism 112, a rotation axis extending vertically is formed. When cleaning arm 104 is in the basic position shown in FIG. 1, housing 1041 protrudes to one side relative to body 102, and from this position, it can rotate forward or backward along the floor surface about the rotation axis.

[0061] The internal space of the sleeve 110 is connected to the suction space of the flow channel forming member 105. Therefore, when the vacuum source is activated, dust on the floor surface will be sucked into the suction space by the suction force of the vacuum source.

[0062] like Figure 7 As shown, the cleaning head 100 has a positioning mechanism 112 that positions one cleaning arm 104 in a basic position and the other cleaning arm 106 in a basic position. Since the positioning mechanism 112 has a symmetrical structure, the positioning for one cleaning arm 104 will be described below, while the description for the other cleaning arm 106 will be omitted.

[0063] The positioning mechanism 112 has a positioning element 1123 and a spring element 1122, which can elastically position the cleaning arm 104 in a basic position. The positioning mechanism 112 has an upwardly extending positioning element 1123 for positioning the spring element 1122 on the sleeve 108 of the flow channel forming member 105.

[0064] Specifically, such as Figure 8 As shown, an annular groove 1081 is provided on the sleeve 108 of the flow channel forming member 105. The spring member 1122 is disposed in the annular groove 1081 and can rotate relative to the annular groove 1081. However, the annular groove 1081 restricts the axial movement of the spring member 1122 along the sleeve 108, thereby achieving a limiting position. The spring member 1122 and the positioning member 1123 cooperate with each other to fix the spring member 1122 in a basic position relative to the positioning member 1123.

[0065] like Figure 9 and Figure 6 As shown, an actuator 1101 is provided on the sleeve 110 of the cleaning arm 104, such that when the cleaning arm 104 is driven, the actuator breaks the basic state of the spring 1122, causing the spring 1122 to undergo elastic deformation. Specifically, the actuator 1101 is configured as an actuator arm, which is disposed on the sleeve 110 of the cleaning arm 104 and extends upward from the edge of the sleeve. Specifically, as... Figure 6 As shown, the actuating arm protrudes from the upper end of the sleeve 110. When the spring 1122 undergoes elastic deformation under the action of the actuating arm, the cleaning arm 104 can rotate. The actuating arm protrudes upward from the upper end opening of the sleeve of the cleaning arm 104. The actuating arm is a protruding part along the upper end opening, and an anti-detachment member 1102 is provided at the free end. The anti-detachment member 1102 is used to prevent the first arm 201 or the second arm 202 from longitudinally detaching from the actuating arm under the action of the actuating arm. The anti-detachment member 1102 is partially annular and can be adapted to the shape of the outer wall of the sleeve 107 of the flow channel forming member 105 so as to slide freely along the outer wall of the sleeve 107 of the flow channel forming member 105 when the cleaning arm 104 pivots, and plays a role in maintaining the stability of the coaxial pivoting of the cleaning member sleeve 110 and the sleeve 107 of the flow channel forming member.

[0066] In this embodiment, the spring element 1122 is composed of a torsion spring, such as... Figure 10 As shown, the spring member 1122 has a first arm 201, a second arm 202, and a coiled spring member 203 connected to the first arm 201 and the second arm 202.

[0067] like Figure 11 Combination Figure 9 As shown, the actuator 1101 is inserted between the first arm 201 and the second arm 202 of the spring member 1122 and is kept under appropriate preload. The axis of the spring member 1122 is oriented vertically. The spring member 1122 is mounted in an annular groove 1081 formed on the sleeve 108 of the flow channel forming member 105. The first arm 201 and the second arm 202 extend from the spring member 1122, and the ends of the first arm 201 and the second arm 202 are clamped to both sides of the positioning member 1123 in a preloaded manner.

[0068] like Figure 11 Referring to Figure 6, the actuating arm has a first actuating side 1103 and a second actuating side 1104. When the cleaning arm 104 is in the basic position, the first actuating side 1103 is in partial pre-tightened contact with the first arm 201, and the second actuating side 1104 is in partial pre-tightened contact with the second arm 202. The positioning member 1123 has a first restricting side 1105 and a second restricting side 1106. When the cleaning arm 104 is in the basic position, the first restricting side 1105 is in pre-tightened contact with the tip of the first arm 201, and the second restricting side 1106 is in pre-tightened contact with the tip of the second arm 202.

[0069] As the cleaning arm 104 rotates about the rotation axis, the actuating arm pushes out either the first arm 201 or the second arm 202 and generates angular displacement about the rotation axis. However, the positioning element 1123 restricts the movement of the tip of the first arm 201 or the second arm 202.

[0070] like Figure 11 and combined with, for example Figure 6 and Figure 9 As shown, taking the first arm 201 as an example, if the first arm 201 is as follows... Figure 11Rotating in the direction of the arrow, the first actuation side 1103 of the actuating arm exerts a lever effect, causing the spring 1122 to elastically deform. If this force is sufficient to push the first arm 201 out, the end point of the first arm 201 disengages from the first limiting side 1105 of the positioning member, allowing the first arm 201 to deviate angularly from the first limiting side 1105. In this state, the cleaning arm 104 can rotate rearward about the rotation axis (along the first rotation direction). At this time, the end point of the second arm 202 forms a constraint on the second limiting side 1106 of the positioning member, maintaining engagement with it. Therefore, when the first arm 201 undergoes angular displacement in a direction away from the first limiting side 1105, the spring 1122 elastically deforms and stores a restoring force. When the clamping force on the first arm 201 disappears, the spring 1122 recovers, and the end point of the first arm 201 can return to the position contacting the first limiting side 1105, returning the first arm 201 to its basic position.

[0071] Conversely, if the first arm 201 is as follows Figure 11 When the actuating arm 120 rotates in the opposite direction of the arrow, and the second actuating side 1104 of the actuating arm 120 pushes out the second arm 202, the end point of the second arm 202 may be angularly offset from the second limiting side 1106. In this state, the cleaning arm 104 can rotate forward about the rotation axis (along the second rotation direction). At this time, the first limiting side 1105 remains engaged with the end point of the first arm 201, and when the second arm 202 undergoes angular displacement in a direction away from the second limiting side 1106, the spring member 1122 elastically deforms. When the clamping force on the second arm 202 disappears, the spring member 1122 returns to its original position, the end point of the second arm 202 can return to the position in contact with the second limiting side 1106, and the first arm 201 returns to its basic position.

[0072] The operation of the surface cleaning device with the cleaning head described in this disclosure is briefly described below. When the user holds the handle and tilts the handle and the surface cleaning device body backward to begin cleaning, the cleaning arms 104 and 106 are in their basic positions under the action of the positioning member, and the spring force provided by the spring member should maintain an appropriate force to prevent displacement of the cleaning arms 104 and 106 due to slight collisions or friction. During this process, the flow channels of the cleaning arms 104 and 106 are always connected to the flow channel 119 formed in the nozzle body 102. When the user operates the control unit to activate the vacuum source, the vacuum source generates an upward suction force.

[0073] Then, the suction force of the vacuum source acts on the suction space of the internal flow channel forming 105 through the channels of cleaning arms 104 and 106. In one example, the cleaning arm 104 gradually narrows towards the pivot axis, and as the suction space shrinks towards the top of the cleaning arm 104, a strong suction force is generated at the top of the suction space. The suction force of the vacuum source causes dust on the floor surface to flow into the suction space along with the air.

[0074] Then, the dust passes through the internal space of the flow channel formed by the sleeve and the internal space of the flow channel forming member 105 in sequence, enters the surface cleaning device body through the extension rod, and is finally captured and stored in the surface cleaning device body by the filter part.

[0075] When in the basic position, cleaning arms 104 and 106 protrude to the left and right relative to positioning mechanism 112, respectively, placing cleaning head 100 in its widest position. In this state, dust can be removed from a large area of ​​the floor surface if the user moves cleaning head 100 forward or backward.

[0076] Cleaning arms 104 and 106 are rotatably mounted on positioning mechanism 112 in the front-to-back direction. However, by configuring the spring, cleaning arms 104 and 106 can be prevented from rotating under small forces and fixed in their basic positions. In other words, an external force attempting to rotate cleaning arms 104 and 106 backward (in the first rotation direction) will cause the actuating arm to attempt to push the first arm 201 out. However, if the compressive force of the actuating arm on the first arm 201 is insufficient to cause elastic deformation of spring 1122, the angular displacement of spring 1122 will be limited by the first arm 201. If the compressive force of spring 1122 when rotating cleaning arms 104 and 106 forward (in the second rotation direction) under external force is insufficient to cause elastic deformation of spring 1122, the angular displacement of spring 1122 will be adjusted by the second arm 202.

[0077] However, if the front ends of the cleaning arms 104 and 106 collide with an obstacle while the user is moving the cleaning head 100 forward, the external force generated by the collision and compression is sufficient to cause the cleaning arms 104 and 106 to rotate backward. In this case, the external force causes the sleeve 110 to rotate about the axis of rotation. The counterclockwise rotation of the sleeve 110 causes the first arm 201 to be pushed away from the first actuation side 1103 from the actuation arm. In this way, the spring member 1122 can undergo angular displacement about the axis of rotation together with the first arm 201. During this process, the positioning member 1123 inserted into the coiled spring member 1122 prevents the entire spring member 1122 from displacing. The second actuation side 1104 disengages from the second arm 202, and the second arm 202 remains engaged with the second restraining side 1106. Therefore, while the spring member 1122 and the second arm 202 are fixed in place, the first arm 201 can undergo angular displacement about the axis of rotation. Therefore, the cleaning arm 104 can rotate about the axis of rotation. In this state, the elastic deformation of the spring 1122 increases with the angular displacement of the first arm 201, and a restoring force is stored in the spring 1122. Subsequently, when the external force acting on the cleaning arm 104 is removed, the spring 1122 returns to its original shape until the first arm 201 contacts the first actuation side 1103. Therefore, the spring 1122 is pushed back to its initial position by the first arm 201, while the cleaning arm 104 returns to its basic position.

[0078] Conversely, when the user moves the cleaning head 100 backward, if the rear end of the cleaning arm 104 collides with an obstacle, the resulting external force causes the cleaning arm 104 to rotate forward. In this case, the external force causes the sleeve 110 to rotate about the axis of rotation. The clockwise rotation of the sleeve 110 causes the second actuating side 1104 of the actuating arm to push the second arm 202 away from the second limiting side 1106. This causes the spring 1122 to undergo angular displacement together with the second arm 202 about the axis of rotation. During this process, the positioning member 1123 inserted into the coiled spring 1122 prevents the entire spring 1122 from displacing. The first actuating side 1103 remains engaged with the first arm 201. Therefore, with the spring 1122 and the first arm 201 fixed, the second arm 202 undergoes angular displacement about the axis of rotation. Thus, the cleaning arm 104 can rotate about the axis of rotation. In this state, the elastic deformation of the spring 1122 increases with the angular displacement of the second arm 202. Subsequently, when the external force acting on the cleaning arm 104 is removed, the spring 1122 returns to its original state until the second arm 202 contacts the second actuation side 1104. Therefore, the spring 1122 is pushed back to its initial position by the second arm 202, while the cleaning arm 104 returns to its basic position.

[0079] In the above structure, if the user moves the cleaning arm 104 back and forth in the basic position of the cleaning head, the cleaning arm 104 protrudes to the left or right relative to the main body, and dust is sucked into the suction space of the cleaning arm 104 from the wide area. If the surface cleaning device housing collides with an obstacle and is subjected to a backward external force, the surface cleaning device housing will rotate backward along the ground. Conversely, if the cleaning arm 104 is subjected to a forward external force, it will rotate forward along the floor surface. The back-and-forth rotation of the cleaning arm 104 makes the cleaning head narrower, allowing the user to insert the cleaning head into narrow spaces without being affected by obstacles.

[0080] If the housing of the surface cleaning device rotates significantly in the front-to-back direction due to minor external forces such as ground friction, the width of the cleaning head will be unstable, causing inconvenience to the cleaning operation. Therefore, the positioning mechanism 112 positions the cleaning arm 104 in a basic position. When the cleaning arm 104 attempts to rotate from the basic position, the positioning member 1123 restricts the first or second arm from shifting relative to the positioning mechanism 112. If the force applied by the actuating arm to the first or second arm is insufficient to cause elastic deformation of the elastic connection, the angular displacement of the spring member will be prevented by the first limiting side 1105 or the second limiting side 1106 of the positioning member 1123. In this case, the cleaning arm 104 will not rotate but will remain in the basic position.

[0081] On the other hand, as described above, if the cleaning arm 104 experiences a large external force in the forward or backward direction due to a collision with an obstacle, the actuating arm will extend either the first or second arm. When the spring extends one of the first or second arms, that arm can undergo angular displacement about its rotation axis, allowing the cleaning arm 104 to rotate to a certain extent. When one of the first or second arms undergoes angular displacement about the rotation axis of the cleaning arm 104, the spring at the connection between the first and / or second arms undergoes elastic deformation. Therefore, a restoring force is stored in the spring, and when the external force acting on the cleaning arm 104 is no longer present, the spring is pushed back to its original position by one of the arms under the action of the spring's restoring force. In other words, the cleaning arm 104 is pushed back to its basic position. Therefore, only one spring is needed to position the cleaning arm 104 in its basic position.

[0082] The surface cleaning apparatus for other aspects of the above embodiments has a vacuum source that generates suction to draw in dust, a cleaning arm through which the dust drawn in by the suction of the vacuum source flows, and a cleaning head as described above.

[0083] The cleaning head and vacuum surface cleaning equipment in the above embodiments are suitable for equipment used for cleaning tasks.

[0084] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A cleaning head, characterized in that, include: The main body has internal airflow channels; A cleaning arm is pivotally connected to the main body, the cleaning arm being pivotable relative to the main body, the cleaning arm having an open opening in fluid communication with the airflow channel, and through which particles are drawn into the surface to be cleaned; The positioning mechanism positions the cleaning arm in a basic position that protrudes from the main body when no external force is applied to it. The positioning mechanism includes: A spring component is mounted on the cleaning arm, and it deforms when the cleaning arm pivots. The actuator arm is integral with the cleaning arm and is configured to cause the spring member to deform when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force. A positioning element is formed on the main body and configured to suppress deformation of the spring element when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force; When the cleaning arm pivots to its limit position along the first direction, at least a portion of the cleaning arm is located within the vertical projection range of the body, and the opening and airflow channel remain in fluid communication during the pivoting process of the cleaning arm.

2. The cleaning head according to claim 1, characterized in that, The spring element includes a torsion spring having a first arm located at the starting position of the torsion spring and a second arm located at the ending position of the torsion spring.

3. The cleaning head according to claim 2, characterized in that, When the cleaning arm is in the basic position, the actuating arm is located between the first and second arms of the spring member.

4. The cleaning head according to claim 3, characterized in that, When the cleaning arm is in its basic position, at least a portion of the cleaning arm is located to the side of the body.

5. The cleaning head according to claim 3, characterized in that, When the cleaning arm pivots relative to the body in a first direction under the drive of an external force, the actuating arm causes the first arm of the spring to deflect, and the positioning member restricts the second arm of the spring to remain stationary, so that the spring deforms.

6. The cleaning head according to claim 3 or 4, characterized in that, When the cleaning arm pivots relative to the body in a second direction opposite to the first direction under the drive of an external force, the actuating arm causes the second arm of the spring to deflect, and the positioning member restricts the first arm of the spring to remain stationary so that the spring deforms.

7. The cleaning head according to claim 6, characterized in that, When the cleaning arm pivots to the second extreme position along the second direction, at least a portion of the cleaning arm is located in front of the body, and the opening and airflow channel remain in fluid communication during the pivoting process of the cleaning arm.

8. The cleaning head according to claim 1, characterized in that, The cleaning arm includes a first sleeve, and the main body includes a second sleeve, with the second sleeve fitted inside the first sleeve to achieve a pivotal connection between the cleaning arm and the main body.

9. The cleaning head according to claim 8, characterized in that, The actuating arm is formed at the end of the first sleeve, and the spring is wound around the annular groove of the second sleeve.

10. A surface cleaning device, characterized in that, include: A vacuum source that generates suction to draw in dust; Cleaning head, the cleaning head comprising: The main body has an internal airflow channel that is in fluid communication with the vacuum source. A cleaning arm is pivotally connected to the main body, the cleaning arm is pivotable forward or backward relative to the main body, the cleaning arm has an open opening that is in fluid communication with the airflow channel and through which particles are sucked into the surface to be cleaned; A positioning mechanism, which positions the cleaning arm in a basic position protruding relative to the main body when no external force is applied to it; the positioning mechanism includes: A spring component is mounted on the cleaning arm, and it deforms when the cleaning arm pivots. The actuator arm is integral with the cleaning arm and is configured to cause the spring member to deform when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force. A positioning element is formed on the main body and configured to suppress deformation of the spring element when the cleaning arm pivots relative to the main body in a first direction under the drive of an external force; When the cleaning arm pivots to its limit position along the first direction, at least a portion of the cleaning arm is located within the vertical projection range of the body, and the opening and airflow channel remain in fluid communication during the pivoting process of the cleaning arm.

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