Movable brush cylinder structure of dust collector
By using a traction hook driven by a reset spring to cooperate with a guide groove, the problems of easy misoperation and damage of the existing vacuum cleaner's movable brush cylinder are solved, resulting in a simple, stable, and aesthetically pleasing movable cylinder structure, which improves user experience and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-03-17
AI Technical Summary
The existing vacuum cleaner's movable brush cylinder structure is inconvenient to operate, prone to misoperation and unstable, the exposed buttons affect the appearance, and are easily damaged under impact.
The traction hook driven by the return spring cooperates with the guide groove to achieve automatic locking and unlocking of the moving cylinder through one-way push and pull. The hidden button design and the retreat channel in the guide groove protect the hook from impact.
It achieves a simple, stable, and reliable mobile tube function, improving user experience and product aesthetics, and enhancing structural durability and reliability.
Smart Images
Figure CN121667558A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of household cleaning appliances, in particular to a moving brush cylinder structure of a dust collector. BACKGROUND
[0002] A dust collector is a common cleaning device. In order to enhance the cleaning effect, the dust collector is usually equipped with some accessories (such as a gap brush and a two-in-one flat suction) for cleaning gap, sofa, bedding and other cloth surfaces. Since these accessories are separated from the dust collector, it is not very convenient to use. Therefore, the prior art provides a structure of setting a brush cylinder at the front end of the air inlet of the dust collector. The brush cylinder is usually designed to be movable. When it is pushed forward, the bristles can lift dust to facilitate suction. When it is not used, it is pushed back to be stored.
[0003] The existing moving brush cylinder usually needs to be provided with a flap button on the outer surface, and a hook is arranged on the fixed cylinder (the air inlet pipe of the dust collector). The moving cylinder is unlocked by pressing the flap button and then pushed and pulled. However, the moving brush cylinder structure in the prior art has the following disadvantages: (1) The user needs to accurately press the button to unlock and push the moving brush cylinder at the same time. This operation requires the user to coordinate both hands, which may cause difficulty in a specific holding posture (such as holding the dust collector with both hands), and is prone to misoperation; (2) The locking and unlocking mechanism of the moving cylinder is not stable and reliable, and may be stuck or accidentally unlocked during use, affecting the user experience. In particular, the flap button and the hook are plastic parts that are engaged. When the dust collector is accidentally dropped, the moving brush cylinder will be subjected to a large external impact, which may cause deformation or damage to the plastic engagement structure, resulting in functional failure; (3) The exposed flap button inevitably forms a gap and a protrusion on the surface of the moving cylinder, which destroys the integrity and aesthetics of the product appearance.
[0004] Therefore, it is necessary to design a moving brush cylinder structure without exposed buttons, which is simple to operate, reliable in structure and can withstand a large impact force to solve the above problems.
[0005] It should be noted that the above introduction to the technical background is only to facilitate a clear and complete description of the technical solutions of the present application, and to facilitate the understanding of those skilled in the art. The above technical solutions cannot be considered as known to those skilled in the art merely because they are described in the background section of the present application. SUMMARY
[0006] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a moving brush cylinder structure of a dust collector.
[0007] To achieve the above object and other related objects, the technical scheme provided by the present application is: a mobile brush cylinder structure of a dust collector, comprising a fixed cylinder and a mobile cylinder provided with brush hairs at the front end, the mobile cylinder is sleeved outside the fixed cylinder and can move back and forth along the axial direction under the action of external force; a reset spring is arranged between the mobile cylinder and the fixed cylinder, and the reset spring can be compressed when the mobile cylinder moves forward. The present application can realize the axial movement of the mobile cylinder by external force, and the automatic reset of the mobile cylinder can be realized by the reset spring, which is simple in structure and convenient to operate.
[0008] Further, the upper surface of the fixed cylinder is provided with a butt joint plane, the butt joint plane is provided with a guide groove; a traction hook is arranged between the mobile cylinder and the fixed cylinder, the fixed end of the traction hook is connected with the mobile cylinder, and the traction end of the traction hook is slidably arranged in the guide groove. When the mobile cylinder moves forward along the axial direction to the maximum limit, the lower end of the traction hook is positioned at the front end of the guide groove; when the mobile cylinder moves backward along the axial direction to the maximum limit, the lower end of the traction hook is positioned at the rear end of the guide groove.
[0009] The present application realizes accurate guidance and stable movement by the cooperation of the traction hook and the guide groove, ensures the stable positioning of the mobile cylinder at the front and rear limit positions, and prevents over-movement or disengagement.
[0010] Further, the guide groove comprises: a main channel, the inlet of which is located at the rear part of the guide groove; a shunt guide protrusion, which is arranged at the front end of the main channel and separates the front of the main channel into a first branch channel and a second branch channel; a rebound locking channel, which is V-shaped or arc-shaped, and the two ends thereof are respectively connected with the top ends of the first branch channel and the second branch channel; the middle part of the rebound locking channel forms a rear concave locking recess; The traction hook is arranged at the inlet of the main channel, and can move forward along the first branch channel under the action of external thrust and move backward along the second branch channel under the action of the elastic force of the reset spring.
[0011] When the traction hook moves forward along the main channel, it is guided by the shunt guide protrusion into the first branch channel and continues to move to the rebound locking channel; under the action of the rebound force, the traction hook rebounds after passing over the top point of the rebound locking channel, and is finally clamped into the locking recess, realizing locking; When the towing hook is in the locking recess, the forward pushing force is applied again, the towing hook moves forward and left along the rebound locking channel to enter the second branch channel, and then moves backward along the second branch channel under the rebound force to return to the bottom (rear) of the main channel through the left side of the shunt guide protrusion, thereby achieving unlocking reset.
[0012] The side of the shunt guide protrusion close to the first branch channel is a guide slope, and the side close to the second branch channel is a stop vertical surface, so as to ensure that the towing hook can only slide back from the second channel when returning.
[0013] Further, a retreat channel is formed in the shunt guide protrusion, the front end of the retreat channel is communicated with the rear end of the rebound locking channel, and the rear end of the retreat channel is communicated with the main channel; when the moving cylinder is impacted by external force, the axial force of the moving cylinder is defined as F; when F≥50N, the towing end of the towing hook enters the retreat channel. The entrance width of the retreat channel is smaller than the diameter of the towing hook, and when the towing hook is located at the entrance position of the retreat channel, it will not pass through the retreat channel under normal conditions, and only when the moving cylinder is impacted by external force, the towing hook will open the entrance of the retreat channel to pass through the retreat channel and return to the main channel, thereby avoiding deformation or damage of the guide groove caused by external force.
[0014] Further, the depth of the guide groove is H, the depth of the towing end of the towing hook extending into the guide groove is h, and the groove depth H and the depth h satisfy: 0.4H≤h≤0.7H.
[0015] Further, the channel width of the rebound locking channel, the first branch channel, the second branch channel and the rear end of the retreat channel is D1; wherein the rear end channel of the retreat channel includes the internal channel and the channel at the rear end outlet. The channel width at the front end entrance of the retreat channel is D2, and it satisfies: D2<D1; the cross section of the towing hook is circular and the diameter of the towing end is d, and the width D1, D2 and the diameter d simultaneously satisfy: 0.6d≤D2≤0.8d and 1.2d≤D1≤1.4d.
[0016] Further, the moving cylinder comprises an outer cylinder and an inner cylinder, the inner cylinder is located inside the outer cylinder and the two are clamped; the inner top surface of the outer cylinder is provided with a mounting groove along the axial direction, the outer top surface of the inner cylinder is provided with a mounting port corresponding to the mounting groove, the front end of the mounting port is provided with a fixed column capable of extending into the mounting groove; the fixed end of the towing hook is provided with a ring hook, and the ring hook is sleeved on the fixed column.
[0017] Further, the traction hook comprises a middle transition section and first and second bending sections fixed at two ends of the middle transition section, the first and second bending sections are both arranged in a bending manner relative to the middle transition section, and the first and second bending sections are arranged in perpendicular manners, and the second bending section is arranged in a horizontal manner when the first bending section is arranged in a vertical manner.
[0018] Further, the outer surface of the fixing cylinder is provided with a butt joint groove for placing the reset spring, the rear of the reset spring is provided with a pushing member, and the pushing member is connected with the inner cylinder in a transmission manner.
[0019] Further, the outer surface of the inner cylinder is provided with a clamping hook, the inner surface of the outer cylinder is provided with a clamping groove, and the clamping hook is correspondingly clamped with the clamping groove.
[0020] Further, the front end surface of the outer cylinder is provided with a circle of uniformly distributed mounting holes, and the brush hairs are composed of hair bundles distributed in the mounting holes.
[0021] Further, the front end surface of the outer cylinder is an inclined surface, and when the outer cylinder is arranged with its axis parallel to the horizontal surface, the inclined surface is inclined upward relative to the horizontal surface.
[0022] By means of the above technical solutions, the present application has the following beneficial effects compared with the prior art: 1. The present application can realize extension locking and unlocking reset by simple one-way push-pull of the moving cylinder, without exposed pressing buttons, so that the user operation steps are simplified, the outer surface of the moving cylinder is smooth and complete, and the appearance quality and aesthetic degree of the product are improved.
[0023] 2、The present application cooperates with the guide groove with special path (main channel, branch channel, rebound locking channel) through the traction hook, and realizes the automatic clamping and stable locking of the traction hook in the locking recess by the rebound force of the return spring, avoids accidental unlocking, and the guidance in the movement process is accurate.
[0024] 3、The unique retreat channel design of the present application provides a controlled release path for the traction hook when the moving cylinder is subjected to a large axial impact force (such as falling), so that it can safely retreat back to the main channel by supporting the narrow entrance, thereby avoiding damage to the rigid structure and greatly improving the durability and reliability of the structure.
[0025] 4、The present application ensures the stability and smoothness of the traction hook in the groove by limiting the proportional relationship between the guide groove depth and the hook insertion depth, and the matching relationship between the channel width and the hook diameter, and prevents it from falling out or being stuck; the inner cylinder and the outer cylinder are connected by multiple points such as hooks, grooves and fixing columns, which is easy to assemble and firmly connected.
[0026] 5、The return spring of the present application can be symmetrically arranged, and the force is stably transmitted through the pusher, so that the moving cylinder is evenly stressed during forward and backward movement and rebound, and the movement is smooth and the user experience is good. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a schematic view of the moving brush cylinder structure of the present application; Figure 2 is a sectional view of the moving brush cylinder of the present application; Figure 3 is an enlarged view of part A of the present application; Figure 4 is a schematic view of the initial state of the traction hook in the guide groove of the present application; Figure 5 is a schematic view of the locking state of the traction hook in the guide groove of the present application; Figure 6 is a schematic view of the guide groove structure of the present application; Figure 7 is a schematic view of the traction hook structure of the present application; In the above drawings, 1、fixed cylinder; 11、butt joint plane; 12、guide groove; 121、main channel; 122、shunt guide protrusion; 1221、guide inclined surface; 1222、stop vertical surface; 1223、retreat channel; 123、first branch channel; 124、second branch channel; 125、rebound locking channel; 1251、locking recess; 13、butt joint groove; 2、moving cylinder; 21、outer cylinder; 211、mounting groove; 212、hook groove; 213、mounting hole; 22、inner cylinder; 221、mounting port; 222、fixing column; 223、hook; 23、bristles; 3, towing hook; 31, towing end; 32, fixed end; 321, ring hook; 33, first bending section; 34, second bending section; 35, intermediate transition section; 4, return spring; 5, pusher. DETAILED DESCRIPTION
[0028] The present application is described in detail by specific embodiments, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the specification.
[0029] It should be understood that, in the description of the present application, it is necessary to point out that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance. The terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0030] In the description of the present application, it is also necessary to point out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0031] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.
[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.
[0033] Example: This example provides a movable brush cylinder structure for a vacuum cleaner.
[0034] See appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the structure mainly includes a fixed cylinder 1 and a movable cylinder 2. The fixed cylinder 1 is usually connected to the air inlet pipe of the vacuum cleaner. The movable cylinder 2 is sleeved on the outside of the fixed cylinder 1 and can move back and forth along the axial direction of the fixed cylinder 1 when pushed or pulled by the user. The front end face of the movable cylinder 2 is provided with bristles 23. In this embodiment, the front end face of the outer cylinder 21 has a ring of evenly distributed mounting holes 213, and the bristles 23 are composed of bristle bundles distributed in these mounting holes 213. In order to improve the cleaning effect, the front end face of the outer cylinder 21 is designed as an inclined surface that is inclined upward relative to its axis, so that the bristles 23 can more easily contact the surface to be cleaned.
[0035] To achieve automatic reset of the movable cylinder 2, a reset spring 4 is provided between the fixed cylinder 1 and the movable cylinder 2. Specifically, a mating groove 13 for placing the reset spring 4 is provided on the outer surface of the fixed cylinder 1. A pusher 5 is provided behind the reset spring 4, and the pusher 5 is connected to the inner cylinder 22 of the movable cylinder 2. When the movable cylinder 2 is pushed forward, the inner cylinder 22 drives the pusher 5 to compress the reset spring 4, accumulating elastic potential energy; when reset is required, the external force is removed, the reset spring 4 releases its potential energy, and pushes the movable cylinder 2 back to its original position. One reset spring 4 can be provided, arranged on one side of the fixed cylinder 1; or two reset springs 4 can be provided, symmetrically arranged on the left and right sides of the fixed cylinder 1, so that the rebound force is more uniform and the movement is more stable.
[0036] The movement guidance and locking between the movable cylinder 2 and the fixed cylinder 1 are achieved through the cooperation of the traction hook 3 and the guide groove 12. The upper surface of the fixed cylinder 1 is provided with a flat mating plane 11, and the guide groove 12 is formed on the mating plane 11. The movable cylinder 2 is connected to the guide groove 12 through the traction hook 3.
[0037] The movable cylinder 2 adopts a split design, including an outer cylinder 21 and an inner cylinder 22. The inner cylinder 22 is located inside the outer cylinder 21, and the two are fixed together by a snap-fit structure. See attached diagram for details. Figure 3As shown, a clamping hook 223 is arranged on the outer surface of the inner cylinder 22, and a clamping groove 212 is arranged on the inner surface of the outer cylinder 21 at a corresponding position, the clamping hook 223 and the clamping groove 212 are correspondingly clamped to realize radial fixation. Preferably, the combination structure of the clamping hook and the clamping groove is arranged in two groups and is arranged on the upper and lower sides to ensure stable connection. An installation groove 211 is axially arranged on the inner top surface of the outer cylinder 21, and an installation opening 221 is arranged on the outer top surface of the inner cylinder 22 and corresponds to the installation groove 211. A fixed column 222 protrudes from the front end of the installation opening 221 and can extend into the installation groove 211 of the outer cylinder 21. The fixed end 32 of the traction hook 3 is provided with a ring hook 321, which is sleeved on the fixed column 222, so as to connect the upper end of the traction hook 3 with the moving cylinder 2 (specifically, the inner cylinder 22).
[0038] The specific structure of the traction hook 3 is shown in the attached Figure 7 As shown, the traction hook 3 includes an intermediate transition section 35 and first and second bending sections 33 and 34 fixed at both ends of the intermediate transition section 35. The first and second bending sections 33 and 34 are arranged to be bent relative to the intermediate transition section 35, and are perpendicular to each other. When the traction hook 3 is installed in place, the second bending section 34 (and the ring hook 321 part) is in a horizontal transverse state and is connected with the fixed column 222; the first bending section 33 is in a vertical state, and the lower end thereof as a traction end 31 extends into and is slidingly arranged in the guide groove 12 of the fixed cylinder 1.
[0039] The guide groove 12 is one of the core designs of the present application, and the detailed structure thereof is shown in the attached Figure 6 As shown, the guide groove 12 includes: A main channel 121: the inlet thereof is located at the rear part of the guide groove 12 (close to the end of the user), which is the initial position and return position of the traction hook 3.
[0040] A shunt guide protrusion 122: arranged at the front end of the main channel 121, which separates the front area of the main channel 121 into two paths.
[0041] A first branch channel 123 and a second branch channel 124: located on both sides of the shunt guide protrusion 122. The side of the shunt guide protrusion 122 close to the first branch channel 123 is a smooth guide slope 1221, and the side close to the second branch channel 124 is a stop vertical surface 1222.
[0042] A rebound locking channel 125: the shape thereof is generally V-shaped or arc-shaped, and the two ends thereof are respectively connected to the top ends of the first branch channel 123 and the second branch channel 124. The middle part of the rebound locking channel 125 forms a locking recess 1251 which is recessed backward (toward the main channel).
[0043] Retreating channel 1223: Opened in the inside of the shunt guide protrusion 122. Its front end entrance communicates with the rear end of the rebound locking channel 125 (near the locking recess 1251), and its rear end exit communicates with the front part of the main channel 121.
[0044] The depth of the guide groove 12 is H, and the depth of the traction end 31 of the traction hook 3 extending into the guide groove 12 is h, which satisfies the relationship: 0.4H≤h≤0.7H. This design ensures that the hook has sufficient guiding length and stable movement, and is not easy to come out of the groove.
[0045] Table 1 Test results when the groove depth H=5mm and different depths h are set:
[0046] The traction end 31 of the traction hook 3 has a circular cross section with a diameter d. In the guide groove 12, the width of the rebound locking channel 125, the first branch channel 123, the second branch channel 124, and the rear end channel (including the exit) of the retreating channel 1223 are all D1. The width at the front end entrance of the retreating channel 1223 is D2, and D2<D1. These dimensions satisfy the following relationships: 0.6d≤D2≤0.8d and 1.2d≤D1≤1.4d. The narrow entrance of D2 ensures that the traction end 31 does not mistakenly enter the retreating channel under normal circumstances, and the width of D1 provides a suitable gap for the normal movement of the traction end 31. The specific values can be determined by experiments, for example, when d=1.0mm, D2 can be 0.7mm, and D1 can be 1.3mm.
[0047] Table 2 Test results when the diameter d=1.0mm and different widths D1, D2 are set
[0048] Test evaluation criteria: Front end entrance passability: Based on the ratio of D2 to d to evaluate the ease of hook entering the front end of the retreating channel.
[0049] “Acceptable”: D2=0.6d, the hook has large resistance when pushed in, with friction but can pass, and the traction hook is slightly deformed.
[0050] “Excellent”: D2=0.7d, the hook has moderate resistance when pushed in, and passes smoothly without deformation of the traction hook.
[0051] “Acceptable”: D2=0.8d, the hook has small resistance when pushed in, and passes smoothly, but slightly hangs.
[0052] Rear end channel passability: Since D1>d (1.2d≤D1≤1.4d), the hook has sufficient gap in the rear end channel, and the passability is “excellent”.
[0053] Locking reliability: Based on the D1 dimension, the locking mechanism of the rebound locking channel, the first branch channel and the second branch channel is ensured to be effective, and all embodiments exhibit "reliable".
[0054] Working principle: The working principle of the mobile brush cylinder structure is divided into normal operation process and accidental impact protection process.
[0055] 1. Normal operation process: Initial / reset state (attached Figure 4 ): The mobile cylinder 2 is in the last end storage position. The traction end 31 of the traction hook 3 is located at the rear entrance of the main channel 121. The reset spring 4 is in a natural or slightly compressed state.
[0056] Pushing out and locking process: the user pushes the mobile cylinder 2 forward. As shown by the blue arrow in the attached Figure 6 , the traction hook 3 moves forward, and its traction end 31 slides along the main channel 121 to the diversion guide protrusion 122. Under the guidance of the guide inclined surface 1221, the traction end 31 enters the first branch channel 123 and continues to move forward and upward, entering the rebound locking channel 125. At this time, the reset spring 4 is continuously compressed. When the traction end 31 moves beyond the top of the rebound locking channel 125, the traction end 31 is "pulled" or "bounced" backward under the restoring force of the reset spring 4, and finally falls into the rear concave locking recess 1251, as shown in the attached Figure 5 , achieving mechanical self-locking. At this time, the mobile cylinder 2 is in the most forward end extended position and is stably locked, and the bristles 23 are completely exposed and can be used for cleaning.
[0057] Unlocking and resetting process: when the bristles need to be stowed, the user applies a forward pushing force to the mobile cylinder 2 again. As shown by the blue arrow in the attached Figure 6 , the pushing force needs to overcome part of the elastic force of the reset spring 4 and the resistance of the locking recess 1251 to drive the traction end 31 to escape from the locking recess 1251 and move forward and left along the rebound locking channel 125. Due to the blocking of the retreat vertical surface 1222, the traction end 31 cannot return to the first branch channel 123, but can only enter the second branch channel 124. Once entering the second branch channel 124, the user releases the pushing force, and under the strong restoring force of the reset spring 4, the traction end 31 quickly slides backward along the second branch channel 124, bypasses the left side of the diversion guide protrusion 122, and returns to the rear initial position of the main channel 121, as shown in the attached Figure 4 , the mobile cylinder 2 is completely reset.
[0058] 2. Accidental impact protection process: When the cleaner is accidentally dropped or the front end of the moving cylinder 2 is subjected to a large positive impact force (for example, axial force F≥50N), if the traction hook 3 is in the locked state (i.e. in the locking recess 1251), the large impact force will be transmitted to the traction end 31 through the moving cylinder 2 and the traction hook 3. At this time, since the front end entrance width D2 of the retreat channel 1223 is designed to be slightly smaller than the diameter d of the traction end 31, the traction end 31 cannot pass through under normal operating force. But under the action of a large enough impact force F, the traction end 31 will squeeze and (slightly elastically deform or force the entrance material to have a slight elastic deformation) open the entrance of the retreat channel 1223, so as to enter the retreat channel 1223, as shown by the middle red arrow in FIG. 12. Subsequently, the traction end 31 retreats back to the main channel 121 through the retreat channel 1223 directly and quickly, thereby driving the entire moving cylinder 2 to move backward and releasing the impact energy. This process avoids that the impact force is completely borne by the weak links such as the bending part of the traction hook 3 or the locking recess 1251 of the guide groove 125, thereby effectively preventing the permanent deformation or rupture of the plastic parts and playing the role of overload protection. Figure 6
[0059] The present application realizes the convenient operation of "one push to lock and another push to return" through the innovative design of the guide groove path and the cooperation of the traction hook. Through the design of the retreat channel, the structure is endowed with excellent impact resistance. At the same time, all mechanisms are hidden inside, so that the product appearance is simple and beautiful, and the reliability is significantly improved.
[0060] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.
Claims
1. A mobile brush cylinder structure of a dust collector, characterized in that: comprising a fixed cylinder (1) and a mobile cylinder (2) provided with bristles (23) at the front end, the mobile cylinder (2) is sleeved outside the fixed cylinder (1) and can move back and forth along the axial direction under the action of external force; a return spring (4) is arranged between the mobile cylinder (2) and the fixed cylinder (1), and the return spring (4) can be compressed when the mobile cylinder (2) moves forward.
2. The mobile brush cylinder structure of a dust collector according to claim 1, characterized in that: the upper surface of the fixed cylinder (1) is provided with a butt joint plane (11), and a guide groove (12) is formed in the butt joint plane (11); a traction hook (3) is arranged between the mobile cylinder (2) and the fixed cylinder (1), the fixed end (32) of the traction hook (3) is connected with the mobile cylinder (2), and the traction end (31) of the traction hook (3) is slidably arranged in the guide groove (12); when the mobile cylinder (2) moves forward to the maximum limit along the axial direction, the lower end of the traction hook (3) is located at the front end of the guide groove (12); when the mobile cylinder (2) moves backward to the maximum limit along the axial direction, the lower end of the traction hook (3) is located at the rear end of the guide groove (12). The guide groove (12) comprises: a main channel (121) with an inlet at the rear part of the guide groove (12); a shunt guide protrusion (122) arranged at the front end of the main channel (121), which separates the front of the main channel (121) into a first branch channel (123) and a second branch channel (124); 3. A mobile brush barrel structure of a dust cleaner according to claim 2, wherein a rebound locking channel (125) shaped like a V or an arc, with two ends respectively connected to the top ends of the first branch channel (123) and the second branch channel (124); the middle part of the rebound locking channel (125) forms a concave locking recess (1251); the traction hook (3) is arranged at the inlet of the main channel (121), and can move forward along the first branch channel (123) under the action of external force, and can move backward along the second branch channel (124) under the action of the elastic force of the return spring (4). a retreat channel (1223) is formed in the shunt guide protrusion (122), the front end of the retreat channel (1223) is connected to the rear end of the rebound locking channel (125), and the rear end of the retreat channel (1223) is connected to the main channel (121); when the mobile cylinder (2) is impacted by external force, the axial force is defined as F; when F≥50N, the traction end (31) of the traction hook (3) enters the retreat channel (1223).
4. A mobile brush barrel structure for a vacuum cleaner according to claim 3, wherein: The depth of the guide groove (12) is H, the depth of the traction end (31) of the traction hook (3) extending into the guide groove (12) is h, and the depth H and the depth h satisfy: 0.4H≤h≤0.7H.
6. The mobile brush cylinder structure of a dust collector according to claim 4, characterized in that: 5. The mobile brush tube structure of a dust cleaner according to claim 2, wherein: The rebound locking channel (125), the first branch channel (123), the second branch channel (124) and the rear end channel width of the retreat channel (1223) are all D1; The front end entrance channel width of the retreat channel (1223) is D2, and D2 < D1 is satisfied; The cross section of the traction hook (3) is circular, and the diameter of the traction end (31) is d, the width D1, D2 and the diameter d simultaneously satisfy 0.6d ≤ D2 ≤ 0.8d and 1.2d ≤ D1 ≤ 1.4d.
7. The mobile brush cylinder structure of a dust collector according to claim 2, characterized in that: The mobile cylinder (2) comprises an outer cylinder (21) and an inner cylinder (22), the inner cylinder (22) is located inside the outer cylinder (21) and the two are clamped together; the inner top surface of the outer cylinder (21) is provided with a mounting groove (211) along the axial direction, the outer top surface of the inner cylinder (22) is provided with a mounting port (221) corresponding to the mounting groove (211) up and down, the front end of the mounting port (221) is provided with a fixed column (222) capable of extending into the mounting groove (211); the fixed end (32) of the traction hook (3) is provided with a ring hook (321), and the ring hook (321) is sleeved on the fixed column (222).
8. The mobile brush tube structure of a dust cleaner according to claim 2, wherein: The traction hook (3) comprises an intermediate transition section (35) and a first bending section (33) and a second bending section (34) fixed at both ends thereof, the first bending section (33) and the second bending section (34) are both bent relative to the intermediate transition section (35), and the first bending section (33) and the second bending section (34) are both arranged vertically, when the first bending section (33) is in a vertical state, the second bending section (34) is in a horizontal state.
9. The mobile brush tube structure of a dust cleaner according to claim 7, wherein: The outer surface of the fixed cylinder (1) is provided with a butt joint groove (13) for placing the reset spring (4), the rear of the reset spring (4) is provided with a pusher (5), and the pusher (5) is in transmission connection with the inner cylinder (22).
10. The mobile brush tube structure of a dust cleaner according to claim 7, wherein: The outer surface of the inner cylinder (22) is provided with a clamping hook (223), and the inner surface of the outer cylinder (21) is provided with a clamping groove (212), and the clamping hook (223) and the clamping groove (212) are correspondingly clamped.