CN113633481B - Multifunctional nursing bed - Google Patents

Abstract

A multifunctional nursing bed comprises a bed frame, a mattress, a switching device and a dust collecting device, wherein an air supply device, a fumigation device and a disinfection device are arranged inside the bed frame; the mattress comprises two mattress bodies; the mattress body comprises an elastic layer and a supporting layer; the switching device controls the mattress body to rotate through the transmission assembly until the mattress body is correspondingly matched with the air supply device, the fumigating device and the disinfecting device respectively, the dust collecting device collects dust generated in the practical process of the mattress, the mattress is driven to rotate through the rotation control assembly, and the mattress can realize the functions of ventilation and massage and the fumigation and the disinfection of the mattress by matching with functional equipment at the corresponding position.

Description

A multifunctional nursing bed

technical field

The invention relates to the field of nursing equipment, in particular to a multifunctional nursing bed.

Background technique

Long-term bedridden patients are prone to bed sores, and long-term bedridden mattresses are prone to breeding bacteria. Failure to clean the mattresses in time affects the patient's health and results in poor patient care.

The invention patent with the Chinese patent application number CN201710393202.0 discloses a detachable pressure ulcer prevention nursing mattress, which solves the problems of single function and inconvenient maintenance and cleaning of the pressure ulcer prevention mattress in the prior art. The invention includes a mattress body and a mattress cover. The mattress body is provided with an air bag which is detachably connected to its surface. The number of the air bags is more than two, which are distributed in an array, and the odd-numbered rows and the even-numbered rows are staggered. The cushion body is provided with an air-filling and venting mechanism and a ventilation mechanism; the mattress cover is mainly composed of sleeves, and the six sleeves are detachably connected to each other to form a regular hexagonal hollow; two or more regular hexagonal hollows form a Hollow rows, two or more hollow rows side by side to form mattress covers; when the mattress covers are covered on the mattress body, each inflatable bag corresponds to a regular hexagonal hollow and passes through the corresponding regular hexagonal hollow. The invention has a simple structure, can effectively prevent the occurrence of pressure ulcers, is convenient for cleaning and maintenance, and can effectively prevent foot drop caused by long-term bed rest.

However, the airbag needs to be disassembled and assembled when the mattress is cleaned, and the process is cumbersome, resulting in lower cleaning efficiency and higher cost of the airbag.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a multifunctional nursing bed, which drives the mattress to rotate through the rotation control assembly, and the mattress cooperates with functional equipment at the corresponding position to realize the functions of ventilation and massage, as well as the fumigation and disinfection of the mattress itself.

To achieve the above object, the present invention provides the following technical solutions:

A multifunctional nursing bed comprising:

a bed frame, wherein an air supply device, a fumigation device and a disinfection device are arranged inside the bed frame;

A mattress, the mattress includes two mattress bodies arranged along the length direction of the bed frame and rotatably installed on the bed frame side by side; the mattress body includes an elastic layer and a support layer arranged up and down; The elastic layer is evenly provided with a plurality of air outlets; the support layer is provided with a plurality of flow channels communicating with the air outlets;

a switching device, the switching device controls the rotation of the mattress body through a transmission component to be matched with the air supply device, the fumigation device and the disinfection device respectively; and

A dust collecting device, the dust collecting device includes several groups of filter assemblies correspondingly installed at the air outlet holes and a collection assembly that can be aligned with the flow channel opening. During disinfection, several groups of the filter assemblies rotate synchronously and cooperate to collect The assembly collects dust generated during use of the mattress.

As an improvement, the bottom of the bed frame is closed.

As an improvement, a plurality of the flow channels are arranged in a criss-cross pattern, and some and only a plurality of the flow channels arranged in a transverse direction are arranged through one side of the support layer in the width direction.

As an improvement, the fumigation device and the flow channel can be butt-disposed.

As an improvement, the transmission assembly includes a gear transmission assembly installed at the head of the bed and the end of the bed and connected to the two mattress bodies in power, a control assembly arranged at the head of the bed, and the gear transmission assembly and the control The sprocket drive assembly of the assembly and the gear drive assembly driving the end of the bed rotate the motor.

As an improvement, the control assembly includes a turntable that is dynamically connected with the sprocket drive assembly through a conical tooth assembly, a gear lever rotatably mounted on the turntable, and a flat portion that can be respectively snapped into the gear lever. , Air Supply Department, Massage Department, Fumigation Department and Disinfection Department.

As an improvement, both ends of the massage part are provided with proximity switches for controlling the rotation of the motor.

As an improvement, the gear lever is provided with a coupler a, and the air supply part, the fumigation part and the sterilization part are all provided with a coupler b that is inserted and matched with the coupler a.

As an improvement, the control assembly further includes a plurality of switches respectively connected with the air supply device, the fumigation device, the sterilization device and the motor control.

As an improvement, each of several groups of the filter assemblies includes a mounting seat, a filter screen unit rotatably mounted in the mounting seat, and a flow guide portion transitionally connecting the air outlet hole and the flow channel.

As an improvement, the dust collecting device further includes a connecting rod a that is arranged laterally and connects several groups of the filter screen units in the air outlet; the connecting rod a is drive-connected to the synchronizing wheel assembly, and the synchronizing wheel assembly is power-connected. and the planetary wheel assembly of the rotating shaft of the mattress body.

As an improvement, the collection assembly includes mounting brackets disposed on both sides of the bed frame, a dust collecting bin connected to the mounting bracket through a connecting portion and alignable with several groups of the flow channel openings, and a dust collection bin that is symmetrically rotated up and down. Two sets of rotating plates at the opening of the dust collecting bin; the rotating plates are arranged for unidirectional elastic rotation.

As an improvement, the connecting portion includes a plurality of sets of mounting holes opened on the mounting frame and a mounting rod mounted on the dust collecting bin and capable of being inserted and matched with the mounting holes, the mounting holes and the mounting holes Mounting rod interference fit settings.

The beneficial effects of the present invention are:

(1) The present invention drives the mattress to rotate through the rotation control assembly, and the mattress cooperates with the functional equipment at the corresponding position to realize the functions of ventilation and massage, as well as the fumigation and disinfection of the mattress itself. The nursing bed is fully functional and can be used for multiple purposes;

(2) In the present invention, the control component is arranged at the head of the bed, and the nursing staff can operate it according to the needs of the patient. The bedridden patient can also select the air supply function or massage function by manipulating the gear lever and combining with their own needs. Humanize;

(3) To realize the function of the nursing bed in the present invention, the gear lever selection function needs to be manipulated first, and the coupler a and the coupler b are required to cooperate, and then the function is realized through the switch. The nursing bed is simple to use and reduces the risk of misoperation. probability, improving the safety of the nursing bed;

(4) When the air supply device in the present invention works, the two mattress bodies are inclined to the middle position, the patient lies between the two mattress bodies, and the patient's back forms an air flow channel, which improves the back of the most prone to bedsores. good air permeability, which can effectively prevent the growth of bedsores;

(5) When the air supply device of the present invention is working, since the two mattress bodies are inclined to the middle position, the wind is blown out through the flow channel and the air outlet, so that the air above the patient flows, forming a wind similar to the natural wind, which improves the comfort. At the same time, the contact area between the patient and the wind is increased, and the patient is more likely to feel cool; in the same way, when the air supply device blows hot air, the patient feels more warm;

(6) In the present invention, the patient lies in the middle of the two inclined mattress bodies. When the two mattress bodies reciprocate, the muscles on both sides of the patient are massaged by the mattress body, the patient is relaxed, and muscle fatigue is relieved;

(7) The fumigation device in the present invention fumigates the flow channel, and the corresponding Chinese herbal medicine or essential oil can be added to the fumigation device according to the needs of the patient. The wind contacts the human body through the flow channel, and the Chinese herbal medicine is conducive to the recovery of the patient; It can inhibit the growth of bacteria in the flow channel and further protect the health of the patient;

(8) When sterilizing in the present invention, the two mattress bodies are rotated 180°, the elastic layer is located inside the bed frame, which can sterilize the elastic layer and the flow channel, and the entire bed frame is in a closed state, which can prevent the effect of disinfectant distribution living environment;

(9) In the present invention, the filter assembly in the air outlet prevents dust and other bacteria-breeding impurities generated during the use of the mattress from entering the flow channel, which can effectively prevent cross-infection;

(10) During disinfection in the present invention, when the two mattresses are rotated 180°, the filter assembly rotates relative to the mattresses, so that the dust-collecting side faces inward, and cooperates with the air-supplying device for disinfection, so that the dust passes through the flow channel Entering into the dust collection bin, the wind generated by the air supply device recoils the filter screen unit, which improves the dust collection efficiency without generating dust.

To sum up, the present invention has the advantages of ingenious design, simple structure, and various functions of the nursing bed, and is especially suitable for long-term bedridden patients.

Description of drawings

1 is a schematic diagram 1 of the overall structure of the present invention;

Fig. 2 is the overall structure schematic diagram 2 of the present invention;

Figure 3 is a schematic diagram of the structure of the mattress body;

4 is a schematic diagram of a blowing state;

5 is a schematic diagram of a massage state;

6 is a schematic diagram of a fumigation state;

7 is a schematic diagram of a sterilized state;

Fig. 8 is an enlarged view at A in Fig. 1;

Figure 9 is a state diagram of the control assembly during massage;

Figure 10 is a schematic structural diagram of the gear lever;

Fig. 11 is an enlarged view at B in Fig. 1;

Figure 12 is a schematic view of the structure of the dust collecting device 1;

Figure 13 is a schematic view of the structure of the dust collecting device Figure 2;

Figure 14 is an enlarged view at C in Figure 12;

Figure 15 is a schematic diagram of the overall structure of the present invention Figure 3;

Figure 16 is an enlarged view at D in Figure 15;

Figure 17 is a working state diagram of the dust collecting bin.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

Example:

As shown in Figure 1 and Figure 2, a multifunctional nursing bed includes:

The bed frame 1 is provided with an air supply device 11, a fumigation device 12 and a disinfection device 13 inside the bed frame 1;

Mattress 2, the mattress 2 includes two mattress bodies 21 arranged along the length direction of the bed frame 1 and rotatably installed on the bed frame 1 side by side; the mattress body 21 includes elastic layer 211 and support layer 212; the elastic layer 211 is provided with a plurality of air outlets 2111 uniformly; the support layer 212 is provided with a plurality of flow channels 2121 that communicate with the air outlets 2111;

a switching device 3, the switching device 3 controls the mattress body 21 to rotate through the transmission assembly 30 to correspond to the air supply device 11, the fumigation device 12 and the disinfection device 13 respectively; and

The dust collecting device 4, the dust collecting device 4 includes several groups of filter assemblies 41 correspondingly installed at the air outlet holes 2111 and a collection assembly 42 that can be aligned with the opening of the flow channel 2121. During disinfection, several groups of the filter assemblies The assembly 41 rotates synchronously and cooperates with the collecting assembly 42 to collect dust generated during the use of the mattress 2 .

It should be noted that the air supply device 11 , the fumigation device 12 and the sterilization device 13 are all in the prior art, and the working process and working principle of the three are not repeated here.

It should be noted that the nursing bed provided by the present invention is suitable for long-term bedridden patients, and such patients will not cause great pollution to the mattress, so the mattress body 21 can be reused after being sterilized.

It is important to note that the elastic layer 211 improves the comfort in use, and in order to further improve the use efficiency, a rattan mat with a larger mesh can be laid on the elastic layer 211 .

Further, the bottom of the bed frame 1 is closed.

It should be noted that the bottom of the bed frame 1 is closed and arranged, which can effectively prevent the influence of dust and the like on the nursing bed.

As shown in FIG. 3 , a plurality of the flow channels 2121 are arranged in a crisscross pattern, and there are only a plurality of the flow channels 2121 arranged in a transverse direction and are arranged through one side of the support layer 212 in the width direction.

It should be noted that, as shown in FIG. 4 , the mattress body 21 is inclined, the flow channel 2121 can smoothly enter the air, and the wind passes through the flow channel 2121 and the air outlet hole 2111 to form a vortex above the patient, which improves the Wind area.

Further, as shown in FIG. 6 , the fumigation device 12 and the flow channel 2121 can be connected to each other.

It should be noted that the fumigation device 12 fumigates the flow channel 2121, and Chinese herbal medicine or essential oils can be added to the fumigation device 12 according to the needs of the patient to further improve the nursing effect, and the fumigation process can inhibit the flow channel. Bacteria within 2121.

As shown in FIG. 2 , the transmission assembly 30 includes a gear transmission assembly 31 installed at the head of the bed and the end of the bed and connected to the two mattress bodies 21 in power, a control assembly 32 disposed at the head of the bed, and the The gear transmission assembly 31 and the sprocket transmission assembly 33 of the control assembly 32 and the motor 34 that drives the gear transmission assembly 31 of the end of the bed to rotate.

It should be noted that, by adjusting the transmission ratio of the gear transmission assembly 31 and the sprocket transmission assembly 33, the mattress body 21 can be driven to rotate in a labor-saving manner.

As shown in FIG. 9 and FIG. 10 , the control assembly 32 includes a turntable 321 that is dynamically connected with the sprocket drive assembly 33 through a conical tooth assembly, a gear lever 322 rotatably mounted on the turntable 321 , and a gear lever 322 , which is respectively adjustable The flat part 320 , the air supply part 323 , the massage part 324 , the fumigation part 325 and the sterilization part 326 are clipped into the gear lever 322 .

It should be noted that, as shown in FIG. 4 to FIG. 7 , when the gear lever 322 is snapped into the lay-flat portion 320 , the two mattress bodies 21 form a whole mattress; When the rod 322 is inserted into the air supply part 323, the two mattress bodies 21 are rotated by 5°; when the gear lever 322 is inserted into the massage part 324, the two mattress bodies 21 are at 2°. Reciprocating rotation in the range of ° to 5°; when the gear lever 322 is inserted into the fumigation part 325 , the two mattress bodies 21 are at 90°; when the gear lever 322 is inserted into the disinfection part 326 , the two mattress bodies 21 are turned 180°.

It should be noted that, during fumigation and disinfection, the patient leaves the mattress body 21 .

It is worth noting that during disinfection, the disinfection device can generate a spray and blow the spray into the flow channel 2121 from the air outlet 2111 .

Further, both ends of the massage part 324 are provided with proximity switches 3241 for controlling the rotation of the motor 34 .

It should be noted that, the massage part 324 is provided with a limit groove to ensure that the shift rod 322 moves in the massage part 324 and does not leave the massage part 324 .

It should be noted that the proximity switch 3241 controls the forward and reverse rotation of the motor 34, thereby driving the mattress body 21 to reciprocate.

Further, the gear lever 322 is provided with a coupler a3221, and the air supply part 323, the fumigation part 325 and the sterilization part 326 are all provided with a coupler b3222 which is inserted and matched with the coupler a3221 .

Furthermore, the control assembly 32 further includes a plurality of switches 327 which are respectively connected to the air supply device 11 , the fumigation device 12 , the sterilization device 13 and the motor 34 for control.

It should be noted that, after the coupler a3221 is matched with the coupler b3222, the switch 327 of the corresponding device is activated through a switch.

It should be noted that the air supply device 11 can blow out hot air or cold air according to requirements.

Further, each of several groups of the filter assemblies 41 includes a mounting seat 411 , a filter screen unit 412 rotatably mounted in the mounting seat 411 , and a guide portion 413 transitionally connecting the air outlet 2111 and the flow channel 2121 .

It should be noted that the edge of the filter unit 412 elastically interferes with the mounting seat 411, and when the mattress body 21 is massaging, the dust collected on the filter unit 412 will not enter the flow channel 2121 and the air outlet 2111.

It should be noted that during sterilization, the guide portion 413 enables the gas entering from the air outlet 2111 to be quickly blown out from the opening of the flow channel 2121 , and uses the dust on the filter assembly 41 to be sent out. The air outlet 2111 and the flow channel 2121.

Further, the dust collecting device 4 also includes a connecting rod b44 arranged laterally and connecting several groups of the filter screen units 412 in the air outlet 2111; the connecting rod b44 is driven to connect the synchro wheel assembly 45 and the power connecting rod. The synchronizing wheel assembly 45 and the planetary wheel assembly 46 of the rotation shaft of the mattress body 21 .

It is worth mentioning that a cover is provided on the outer side of the planetary gear assembly 46 .

Further, the collecting assembly 42 includes mounting brackets 421 disposed on both sides of the bed frame 1 , and a dust collecting bin that is connected to the mounting bracket 421 through the connecting portion 420 and can be aligned with the openings of several groups of the flow channels 2121 . 422 and two sets of rotating plates 423 installed at the opening of the dust collecting bin 422 for symmetrical rotation up and down; the rotating plates 423 are arranged for unidirectional elastic rotation.

Further, the connecting portion 420 includes a plurality of sets of mounting holes 4201 formed on the mounting bracket 421 and mounting rods 4202 mounted on the dust collecting bin 422 and capable of being inserted and matched with the mounting holes 4201, so the The mounting hole 4201 and the mounting rod 4202 are provided with interference fit.

It should be noted that, as shown in FIG. 11 , the planetary wheel assembly 46 includes a gear a461 that is rotatably penetrated through the axis of the mattress body 21 and is powered with the synchronizing wheel assembly 45 , and is rotatably installed on the Two sets of gears b462 on the mattress body 21 and engaged with the gears a461 and a ring gear 463 fixed on the bed frame 1 and meshed with the two sets of the gears b462, and the mattress body 21 rotates During the process, the filter screen unit 412 rotates accordingly.

It should be noted that, as shown in FIG. 12 to FIG. 14 , by setting an appropriate transmission ratio, when the mattress body 21 is rotated 180°, the connection of the filter screen unit 412 located at the air outlet 2111 is The material side a4120 faces the inside of the mattress body 21, and in the process of sterilizing and blowing, the air backflushes the filter unit 412 at the air outlet 2111, and the dust passes through the flow channel 2121. into the dust collection bin 422 .

It is important to note that, as shown in FIG. 15 to FIG. 17 , during sterilization, the installation rod 4202 is inserted into the installation hole 4201 , so that the dust collecting bin 422 can face the flow channel. The opening of 2121 is provided, and in the process of sterilization and air supply, the dust collecting bin 422 will not fall.

It is worth mentioning that, under the action of the rotating plate 423, when the dust is blown into the dust collecting bin 422, the dust will not be blown out from the dust collecting bin 422, so as to improve the dust collection efficiency.

work process:

For the flat-lying function, rotate the gear lever 322 to the flat-lying portion 320, and the two mattress bodies 21 are in a horizontal state; for the air supply function, rotate the gear lever 322 to the air supply portion 323, The two mattress bodies 21 are driven to rotate 30° by the transmission assembly 30, the coupler a3221 and the coupler b3222 are coupled, and then the air supply device 11 is turned on through the switch 327, and the wind passes through the The flow channel 2121 is blown out from the air outlet 2111; massage function, rotate the gear lever 322 to the massage part 324, start the motor 34 to drive the two mattress bodies 21 to rotate, the gear lever 322 Move in the massage part 324, and control the rotation of the motor 34 through the proximity switch 3241; for the fumigation function, rotate the gear lever 322 to the fumigation part 325, and the two mattress bodies 21 rotate to make The fumigation device 12 is docked with the flow channel 2121, the coupler a3221 and the coupler b3222 are coupled, and then the fumigation device 12 is activated through the switch 327 to perform fumigation; for disinfection function, turn the gear lever 322 to the sterilizing part 326, the two mattress bodies 21 are rotated 180°, the coupler a3221 and the coupler b3222 are coupled, and then the sterilizing device 13 is activated through the switch 327 for sterilization.

Claims (6)

1. a multifunctional nursing bed, is characterized in that, comprises: a bed frame (1), wherein an air supply device (11), a fumigation device (12) and a disinfection device (13) are provided inside the bed frame (1); A mattress (2), the mattress (2) comprising two mattress bodies (21) arranged along the length direction of the bed frame (1) and rotatably installed on the bed frame (1) side by side; The mattress body (21) includes an upper and lower elastic layer (211) and a support layer (212); a plurality of air outlet holes (2111) are evenly opened on the elastic layer (211); the support layer (212) is provided with There are several flow channels (2121) communicating with the air outlet (2111); A switching device (3), the switching device (3) controls the mattress body (21) to rotate through the transmission assembly (30) to be respectively connected with the air supply device (11), the fumigation device (12) and the disinfection device ( 13) corresponding cooperation; and A dust collecting device (4), the dust collecting device (4) includes several groups of filter assemblies (41) correspondingly installed at the air outlet holes (2111) and a collecting assembly that can be aligned with the opening of the flow channel (2121) (42), during sterilization, several groups of the filter assemblies (41) rotate synchronously and cooperate with the collection assemblies (42) to collect dust generated during the use of the mattress (2); A plurality of the flow channels (2121) are arranged in a crisscross pattern, and there are a plurality of the flow channels (2121) which are arranged horizontally and are arranged through one side of the support layer (212) in the width direction; Several groups of the filter assemblies (41) each include a mounting seat (411), a filter screen unit (412) rotatably mounted in the mounting seat (411), and transitionally connecting the air outlet (2111) and the flow channel (2121) the diversion part (413); The dust collecting device (4) also includes connecting rods b (44) arranged laterally and connecting several groups of the filter screen units (412) in the air outlet holes (2111); the connecting rods b (44) are connected in a driving manner. ) a synchronizing wheel assembly (45) and a planetary wheel assembly (46) dynamically connecting the synchronizing wheel assembly (45) and the rotating shaft of the mattress body (21); The collection assembly (42) includes mounting brackets (421) disposed on both sides of the bed frame (1), connected to the mounting bracket (421) through a connecting portion (420), and connected to several groups of the flow channels ( 2121) A dust collection bin (422) with an opening that can be aligned, and two sets of rotating plates (423) installed at the opening of the dust collecting bin (422) and rotated symmetrically up and down; the rotating plates (423) are provided for unidirectional elastic rotation ; After the mattress body (21) is rotated by 180°, the material receiving side a (4120) of the filter screen unit (412) located at the air outlet (2111) faces the inside of the mattress body (21), and further In the process of sterilizing and blowing, the air backflush the filter unit (412) at the air outlet (2111), and the dust enters the dust collecting bin (422) through the flow channel (2121). )Inside. 2 . The multifunctional nursing bed according to claim 1 , wherein the transmission assembly ( 30 ) comprises a bed head and a bed foot which are respectively installed at the head of the bed and are connected to the two mattress bodies ( 21 ). 3 . A gear transmission assembly (31), a control assembly (32) arranged at the head of the bed, a sprocket transmission assembly (33) drivingly connecting the gear transmission assembly (31) and the control assembly (32), and the drive for the end of the bed The motor (34) rotates the gear transmission assembly (31). 3. The multifunctional nursing bed according to claim 2, wherein the control assembly (32) comprises a turntable (321) that is dynamically connected with the sprocket transmission assembly (33) through a conical tooth assembly , Rotate the gear lever (322) installed on the turntable (321) and the laying part (320), the air supply part (323), the massage part (324) that can be respectively clipped into the gear lever (322) ), fumigation section (325) and disinfection section (326). The multifunctional nursing bed according to claim 3, characterized in that, both ends of the massage part (324) are provided with proximity switches (3241) for controlling the rotation of the motor (34). 5 . The multifunctional nursing bed according to claim 3 , wherein a coupler a ( 3221 ) is provided on the gear lever ( 322 ), the air supply part ( 323 ), the fumigation Both the sterilizing part (325) and the sterilizing part (326) are provided with a coupler b (3222) that is plug-fitted with the coupler a (3221). 6 . The multifunctional nursing bed according to claim 1 , wherein the connecting portion ( 420 ) comprises several sets of mounting holes ( 4201 ) opened on the mounting bracket ( 421 ), and a plurality of mounting holes ( 4201 ) mounted on An installation rod (4202) on the dust collecting bin (422) that can be inserted and matched with the installation hole (4201), and the installation hole (4201) and the installation rod (4202) are arranged in an interference fit.

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