A host assembly and a vacuum cleaner

Abstract

The utility model relates to a kind of mainframe assembly and dust collector, and the mainframe assembly of dust collector includes motor compartment assembly and mainframe body assembly, motor compartment assembly includes motor, motor compartment front cover and motor compartment rear cover located the detachable connection outside motor, first clamping port is equipped on motor compartment front cover, mainframe body assembly includes annular frame, annular frame two sides are limited with motor compartment front cover and motor compartment rear cover cooperation, annular frame is equipped with the bolt cooperation with first clamping port, further using detachable decorative cover, split detachable connection mainframe body assembly, between motor air inlet cavity and / or motor compartment assembly outside and motor air outlet cavity setting pressure relief air duct and pressure relief valve, the installation and structural design of pressure relief valve are optimized;It can effectively simplify dust collector parts processing, reduce manufacturing and maintenance cost, improve installation and manufacturing convenience in personalized manufacturing, give consideration to compact space and reduce failure risk, applicable to handheld portable dust suction and other uses.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum cleaner technology, specifically relating to a main unit component and a vacuum cleaner. Background Technology

[0002] The main unit of a vacuum cleaner is the core of the entire machine, consisting mainly of the motor compartment assembly and the main body assembly. The main body assembly carries the motor compartment assembly, integrating the motor that powers the vacuum cleaner into the whole. However, its main drawback is that the main body of the motor compartment assembly and the frame of the main body assembly adopt an integrated structure. Due to the high design complexity and large overall structural size, it leads to high manufacturing difficulty, inconvenient storage, and easy structural damage during transportation. If the relevant components in the motor compartment malfunction or undergo functional upgrades, disassembly and assembly are relatively inconvenient.

[0003] Secondly, for portable vacuum cleaners, especially handheld vacuum cleaners, the user's visual focus is often concentrated on the middle of the body when holding it. Therefore, the aesthetics of the motor compartment area directly affect the overall impression. In order to enhance the visual effect of the product, cover easily damaged parts, strengthen brand recognition and differentiated design, most handheld portable vacuum cleaners currently have raised decorative parts or textures. These raised decorative parts or textures are mostly integrated with the housing of the motor compartment component, making it inconvenient to make decorative parts of different colors or different types of decorative combinations, and not suitable for replacing different types of decorative covers, which limits personalized manufacturing. At the same time, the integrated structure restricts installation space, affecting the convenience of production and installation, and is inconvenient to store. Using a single integrated part for the main body component also leads to design complexity and high maintenance and replacement costs.

[0004] Furthermore, the motor in the motor compartment assembly is installed behind the vacuum cleaner's filter chamber. When the motor is working, it can create a certain vacuum at the air intake end, drawing dusty air into the vacuum cleaner for filtration and discharge. During this process, the airflow not only provides continuous vacuuming but also cools the motor. If the air intake end or the filter is blocked, resulting in insufficient airflow, the motor will overheat and run at excessive speed, easily causing vacuum cleaner malfunctions. However, if a pressure relief valve is installed between the filter chamber and the motor compartment assembly, it will result in redundant device space, increased vacuum cleaner size, and more parts, affecting manufacturing and use. Utility Model Content

[0005] The present invention aims to solve at least one of the above-mentioned technical problems to a certain extent. The present invention provides a motor compartment assembly and a vacuum cleaner, which can effectively simplify the processing of vacuum cleaner parts, reduce manufacturing and maintenance costs, improve the ease of installation and manufacturing in personalized manufacturing, and take into account compact space and reduce the risk of failure.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A main unit assembly includes a motor compartment assembly and a main body assembly. The motor compartment assembly includes a motor, a front cover and a rear cover of the motor compartment that are detachably connected to the outside of the motor. The front cover of the motor compartment is provided with a first latch. The main body assembly includes an annular frame. The two sides of the annular frame are respectively limited and engaged with the front cover and the rear cover of the motor compartment. The annular frame is provided with a pin that engages with the first latch.

[0008] The aforementioned main unit replaces the integrated structure of the motor compartment assembly and the main body assembly with a detachable structure that is connected by the front and rear covers of the motor compartment under the constraint of the annular frame of the main body assembly. This enables the independent assembly and disassembly of the motor compartment assembly, which simplifies parts processing. At the same time, the first bayonet and pin can be used for quick assembly during the assembly process, which can further reduce manufacturing and maintenance costs.

[0009] To further simplify the detachable connection between the front cover and the rear cover of the motor compartment, in a preferred embodiment, the front cover of the motor compartment is provided with a pin, and the rear cover of the motor compartment is provided with a boss that cooperates with the pin.

[0010] In order to further simplify the disassembly and assembly of the main unit components and improve the stability of the fit between the motor compartment components and the main body components, in the preferred technical solution, the rear cover of the motor compartment is provided with a first buckle, and the annular frame is provided with a second buckle that cooperates with the first buckle.

[0011] To further address issues such as the installation of different colors and types of decorative elements and the ease of manufacturing vacuum cleaners in personalized manufacturing, in a preferred technical solution, a decorative cover is detachably connected to the outer side of the motor compartment rear cover.

[0012] To further improve the ease of assembling and disassembling the decorative cover, in a preferred embodiment, the rear cover of the motor compartment is provided with a third latch, the decorative cover can cover the third latch, and the inner side of the decorative cover is provided with at least two opposing second buckles, which can extend into the third latch and engage with the inner side of the rear cover of the motor compartment.

[0013] To further reduce the design complexity of the main body components and reduce maintenance and replacement costs, in a preferred technical solution, the main body components include a detachably connected main frame, a front body of the main frame, and a top cover of the front body of the main frame, wherein the front body of the main frame is provided with a slot that mates with the main frame.

[0014] To further prevent the motor from running too slowly and at excessive speed due to lack of airflow caused by blockage at the air inlet or blockage of the vacuum cleaner filter, and to achieve a compact space design, in a preferred technical solution, a motor air outlet chamber is provided inside the rear cover of the motor compartment, and a pressure relief valve is provided between the front cover of the motor compartment and the motor air outlet chamber or between the rear cover of the motor compartment and the motor air outlet chamber.

[0015] To further optimize space and save on parts, in a preferred embodiment, the pressure relief valve includes a valve body, a valve core, and an elastic support. The valve body is mounted on the front cover of the motor compartment and has a first air port. A sealing ring is provided between the front cover of the motor compartment and the motor. A valve seat is provided between the sealing ring and the valve body. A second air port is provided on the valve seat. The valve core is located inside the valve seat. The elastic support is located between the valve core and the valve body. A first pressure relief air duct is provided on the sealing ring, connecting the second air port and the motor air outlet.

[0016] To further facilitate rapid pressure relief, in a preferred embodiment, the rear cover of the motor compartment is provided with a second pressure relief duct that connects the motor air outlet cavity with the outside of the motor compartment assembly.

[0017] To further optimize space and save on parts, in a preferred embodiment, the pressure relief valve includes a valve body, a valve core, and an elastic support. The valve body is disposed on a second pressure relief duct and has a third air port. The valve core is located within the valve body and has a protruding ridge that mates with the valve body. The elastic support is located between the valve core and the second pressure relief duct.

[0018] A vacuum cleaner includes a main unit assembly as described in any one of the above claims, wherein the motor compartment assembly is connected to a dust cup assembly, and the main body assembly is connected to a battery pack assembly.

[0019] Compared with the prior art, the beneficial effects of this utility model are at least as follows:

[0020] (1) This utility model adopts a split, detachable and assembleable motor compartment front cover and motor compartment rear cover, which are combined into a main unit under the limit of the annular frame of the main body component. This realizes the independent disassembly and assembly of the motor compartment component, and solves the problems of complex design and large size of the main unit component caused by the integrated structure of the motor compartment component and the main body component, resulting in high manufacturing difficulty, inconvenience of storage and disassembly. It can simplify the processing of vacuum cleaner parts and reduce manufacturing and maintenance costs.

[0021] (2) The motor compartment assembly of this utility model adopts a detachable decorative cover, which can be further installed on the motor compartment rear cover by snap-fit. This solves the problems of limited personalized manufacturing and installation and storage caused by the existing integrated decorative structure. It can improve the convenience of installation and manufacturing in personalized manufacturing, such as different colors, types or combinations of decorative covers, including but not limited to use as a handheld portable vacuum cleaner.

[0022] (3) The main body assembly of this utility model adopts a split and detachable connection of the frame, the front body of the main frame and the upper cover of the front body of the main frame, which solves the problems of design complexity and high maintenance and replacement costs caused by the integrated structure of the main body assembly, and can further simplify the processing of vacuum cleaner parts and reduce manufacturing and maintenance costs.

[0023] (4) This utility model sets a pressure relief valve between the front cover or rear cover of the motor compartment and the motor air outlet cavity, so that the motor air inlet cavity in front of the front cover of the motor compartment and the outside of the motor compartment assembly are connected by the first pressure relief air duct or the second pressure relief air duct, thereby balancing the pressure between the motor air outlet cavity and the machine body and preventing the motor from running too slowly and too fast due to lack of air flow caused by blockage at the air inlet or blockage of the vacuum cleaner filter. At the same time, by setting an integrated valve body on the front cover of the motor compartment, setting a valve seat on the sealing ring, or setting a pressure relief valve in the second pressure relief air duct, and simplifying the structure and optimizing the installation and structural design of the pressure relief valve through the valve core design, the problems of redundant vacuum cleaner space and increased vacuum cleaner volume caused by adding a pressure relief valve are solved. It takes into account compact space and reduced failure risk, while saving parts and facilitating manufacturing and use. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0026] Figure 2 This is an exploded view of the motor compartment assembly according to Embodiment 1 of this utility model;

[0027] Figure 3 This is a schematic diagram of the main body component structure of Embodiment 1 of this utility model;

[0028] Figure 4 This is an exploded view of the main body assembly of Embodiment 1 of this utility model;

[0029] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0030] Figure 6 This is an exploded view of Embodiment 2 of this utility model;

[0031] Figure 7 This is a cross-sectional view of Embodiment 2 of this utility model;

[0032] Figure 8 yes Figure 7 Enlarged view of part A of the structure;

[0033] Figure 9 yes Figure 7 Enlarged view of Part B structure;

[0034] Figure 10 This is a cross-sectional view of Embodiment 3 of this utility model;

[0035] Figure 11 This is an exploded view of the pressure relief valve installation in Embodiment 3 of this utility model;

[0036] Figure 12 This is a schematic cross-sectional view of the pressure relief valve installation in Embodiment 3 of this utility model;

[0037] Figure 13 This is a cross-sectional view of embodiment 4 of this utility model;

[0038] Figure 14 This is an exploded view of the pressure relief valve installation in Embodiment 4 of this utility model;

[0039] Figure 15 This is a schematic diagram of the sealing ring structure of Embodiment 4 of this utility model;

[0040] Figure 16 This is a schematic diagram of the motor compartment rear cover structure of Embodiment 4 of this utility model;

[0041] Figure 17 This is a schematic cross-sectional view of the pressure relief valve installation in Embodiment 4 of this utility model;

[0042] Figure 18 This is a schematic cross-sectional view of the pressure relief valve installation in Embodiment 5 of this utility model;

[0043] Figure 19 yes Figure 18 Enlarged view of the C-section structure;

[0044] Figure 20 This is an exploded view of the pressure relief valve installation in Embodiment 5 of this utility model.

[0045] The diagram shows: main unit component 1, motor compartment component 11, motor 110, motor compartment front cover 111, first latch 1111, pin 1112, stepped surface 1113; motor compartment rear cover 112, boss 1121, first buckle 1122, third latch 1123, second pressure relief duct 1124; decorative cover 113, second buckle 1131.

[0046] Main body assembly 12, ring frame 120, pin 121, second bayonet 122, main frame 123, baffle 1231, front body of main frame 124, slot 1241, front cover of main frame 125, first screw post 126, second screw post 127, third screw post 128.

[0047] Shock-absorbing pad 113, rear HEPA assembly 114, rear HEPA transparent cover 115, sealing ring 116, first pressure relief air duct 1161, groove 1162, mounting hole 1163.

[0048] Pressure relief valve 13, valve body 131, first air port 132, valve seat 133, second air port 134, valve core 135, protruding ridge 1351, through hole 1352, elastic support 136, guide post 137, third air port 138, sealing gasket 139.

[0049] Dust cup assembly 2, battery pack assembly 3, motor air inlet chamber 4, motor air outlet chamber 5, motor compartment assembly exterior 6. Detailed Implementation

[0050] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0051] In the description of this utility model, it should be understood that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to direct connection, indirect connection through an intermediate medium, or internal connection between two components. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0053] Example 1:

[0054] The integrated structure of the motor compartment assembly and the main body frame of the vacuum cleaner's main unit presents challenges due to its complex design and large overall size, leading to difficulties in manufacturing, storage, and assembly / disassembly. Figures 1-3As shown, this is a preferred embodiment of the main unit component 1 of the present invention. The main unit component 1 includes a motor compartment component 11 and a main body component 12. The motor compartment component 11 includes a motor 110, a front cover 111 and a rear cover 112 of the motor compartment that are detachably connected to the outside of the motor 110. The front cover 111 of the motor compartment is provided with a first latch 1111. The main body component 12 includes an annular frame 120. The two sides of the annular frame 120 are respectively limited and cooperate with the front cover 111 and the rear cover 112 of the motor compartment. The annular frame 120 is provided with a pin 121 that cooperates with the first latch 1111.

[0055] For example, such as Figure 2 As shown, several first latches 1111 are provided around the front cover 111 of the motor compartment in a circumferential direction, such as... Figure 3 As shown, the main body assembly 12 has several pins 121 spaced circumferentially within its annular frame 120. During assembly, as shown... Figures 7-8 As shown, the front cover 111 of the motor compartment is positioned and engaged with the annular frame 120 from the left side using its own step. During the process, several first latches 1111 are respectively engaged with several pins 121, so that the front cover 111 of the motor compartment is quickly positioned and its rotation is restricted. After the motor 110 is placed between the front cover 111 of the motor compartment and the rear cover 112 of the motor compartment, the rear cover 112 of the motor compartment is inserted into the annular frame 120. The rear cover 112 of the motor compartment is positioned and engaged with the annular frame 120 from the right side using its own step. By connecting the front cover 111 of the motor compartment and the rear cover 112 of the motor compartment, the main unit component 1 can be assembled.

[0056] The aforementioned main unit 1 replaces the integrated structure of the motor compartment assembly 11 and the main body assembly 12 with a detachable structure that is connected by the front cover 111 and the rear cover 112 of the motor compartment under the limitation of the annular frame 120 of the main body assembly 12. This enables the independent assembly and disassembly of the motor compartment assembly 11, and solves the problem of complex design and large size of the main unit 1 caused by the integrated structure of the front cover of the motor compartment assembly 11 and the frame of the main body assembly 12. This simplifies the processing of the parts of the main unit 1, thereby reducing the manufacturing difficulty and making it easier to store and transport during production. At the same time, the first bayonet 1111 and the pin 121 can be used to quickly position and assemble the parts during the assembly process, which can further reduce manufacturing and maintenance costs.

[0057] Furthermore, the front cover 111 of the motor compartment is provided with a pin 1112, and the rear cover 112 of the motor compartment is provided with a boss 1121 that mates with the pin 1112; for example, as Figure 2 As shown, a plurality of circular pins 1112 are arranged circumferentially around the front cover 111 of the motor compartment. The surface of each circular pin 1112 can be further provided with a stepped surface 1113 that mates with a boss 1121. The plurality of bosses 1121 are arranged circumferentially around the rear cover 112 of the motor compartment, such as... Figures 7-8 As shown, the pin 1112 can mate with the corresponding boss 1121 and be bolted together, which allows for quick positioning and further simplifies the detachable connection between the front cover 111 and the rear cover 112 of the motor compartment; as Figure 3 As shown, the annular frame 120 is also provided with a plurality of baffles 1231 corresponding to the pins 121, such as... Figure 1 As shown, after assembly, the baffle 1231 is located between adjacent bosses 1121 of the motor compartment rear cover 112 and fits against the outer wall of the motor compartment rear cover 112, so that the assembled motor compartment assembly 11 is sealed with the main body assembly 12, and the structure is beautiful and compact.

[0058] Furthermore, the rear cover 112 of the motor compartment is provided with a first buckle 1122, and the annular frame 120 is provided with a second latch 122 that cooperates with the first buckle 1122; for example, as Figure 2 As shown, the first buckle 1122 is located between adjacent protrusions, as... Figure 9 As shown, after the motor compartment rear cover 112 is inserted into the annular frame 120, the hook of the first buckle 1122 engages with the second latch 122, which can further simplify the disassembly and assembly of the main unit 1 and improve the stability of the motor compartment assembly 11 and the main body assembly 12.

[0059] Considering that portable vacuum cleaners, especially handheld vacuum cleaners, often have decorative parts or textures that are integrated with the motor compartment assembly 11, it is inconvenient to create decorative parts of different colors or combinations of different types of decorations. This also makes it unsuitable to replace different types of decorative covers 113, limiting personalized manufacturing. Therefore, a decorative cover 113 is detachably connected to the outer side of the motor compartment rear cover 112; for example, as... Figures 1-2 As shown, multiple decorative covers 113 are arranged circumferentially around the motor compartment rear cover 112 and are symmetrically arranged along the central axis. The detachable connection not only solves the decoration of the vacuum cleaner, but also allows the decorative covers 113 to be replaced with different colors, types and combinations, increasing the feasibility and convenience of diversified design. It can further solve the problems of different colors and types of decoration installation and the convenience of vacuum cleaner manufacturing in the personalized manufacturing of vacuum cleaners. Compared with the one-piece structure, the decorative cover 113 is smaller in size and easier to store.

[0060] Furthermore, the motor compartment rear cover 112 is provided with a third latch 1123, and the decorative cover 113 can cover the third latch 1123. The inner side of the decorative cover 113 is provided with at least two opposing second buckles 1131, which can extend into the third latch 1123 and engage with the inner side of the motor compartment rear cover 112; for example, as... Figure 2 As shown, the rear cover 112 of the motor compartment is provided with several spaced, perforated third latches 1123 around its circumference, and each decorative cover 113 has two opposing second latches 1131 at both ends of its inner side, as shown. Figure 9 As shown, when the decorative cover 113 is assembled onto the rear cover 112 of the motor compartment, the second buckle 1131 extends into the third latch 1123 and engages with the inside of the rear cover 112 of the motor compartment, enabling the decorative cover 113 to be detachably connected. This snap-fit ​​mechanism quickly restricts the decorative cover 113 from moving forward, backward, left, or right. Figure 1 As shown, the decorative cover 113 can cover the third bayonet 1123, avoiding affecting the sealing and aesthetics of the motor compartment rear cover 112, and further improving the ease of installation and removal of the decorative cover 113.

[0061] Considering that using a single, integrated component for the main body assembly 12 would lead to design complexity and high maintenance and replacement costs, the main body assembly 12 further includes a detachably connected main frame 123, a main frame front body 124, and a main frame front cover 125. The main frame front body 124 is provided with a slot 1241 that mates with the main frame 123; for example, as... Figures 4-5 and Figure 7 As shown, the front cover 125 of the main frame can be detachably connected to the front body 124 of the main frame via the first screw post 126. After the front body 124 of the main frame is engaged with the front end of the main frame 123 via the slot 1241, it can be detachably connected to the main frame 123 via the second screw post 127 and the third screw post 128. The main frame 123 includes a ring frame 120. The detachable split connection can further reduce the design complexity of the main body component 12 and reduce maintenance and replacement costs.

[0062] Example 2:

[0063] like Figures 5-9 As shown, this is a preferred embodiment of the vacuum cleaner of the present invention. The vacuum cleaner includes the main unit assembly 1 as described in Embodiment 1, the motor compartment assembly 11 is connected to the dust cup assembly 2, and the main body assembly 12 is connected to the battery pack assembly 3.

[0064] For example, such as Figure 2 As shown, the motor 110 is a brushless motor. A shock-absorbing pad 113 is provided between the tail end of the motor 110 and the rear cover 112 of the motor compartment. The rear cover 112 of the motor compartment is equipped with a rear-mounted HEPA filter assembly 114. The rear-mounted HEPA filter assembly 114 has a transparent rear-mounted HEPA filter cover 115 connected to the rear cover 112 of the motor compartment. Figures 5-8As shown, the dust cup assembly 2 is located above the front cover 125 of the main frame. The dust cup assembly 2 is connected to the front cover 111 of the motor compartment, for example, by snap-fit. The battery pack assembly 3 is connected to the main frame 123 protruding from the front body 124 of the main frame. In this way, the battery pack assembly 3 can provide power to the motor 110, and the motor 110 generates suction to draw dusty air into the dust cup assembly 2. The air is then discharged outside the vacuum cleaner after being filtered by the HEPA filter of the dust cup assembly 2. Since the vacuum cleaner includes the main frame assembly 1 as described in Embodiment 1, it can simplify the processing of vacuum cleaner parts, reduce manufacturing and maintenance costs, and improve the ease of installation and manufacturing in personalized manufacturing, including but not limited to use as a handheld portable vacuum cleaner.

[0065] Example 3:

[0066] like Figures 10-12 As shown, this is another preferred embodiment of the vacuum cleaner of the present invention. The difference from Embodiment 2 is that, in the main unit assembly 1 of the vacuum cleaner, a motor air outlet chamber 5 is provided inside the rear cover 112 of the motor compartment, and a pressure relief valve 13 is provided between the front cover 111 of the motor compartment and the motor air outlet chamber 5. For example, as shown... Figure 10 As shown, the front cover 111 of the motor compartment is connected to the dust cup assembly 2, so that the front of the front cover 111 is the motor air inlet chamber 4, and the rear cover 112 of the motor compartment is the motor air outlet chamber 5. A pressure relief valve 13 is provided between the front cover 111 of the motor compartment and the motor air outlet chamber 5. The pressure relief valve 13 is located between the motor air inlet chamber 4 and the motor air outlet chamber 5. Since the pressure relief valve 13 can be activated under differential pressure to connect the motor air inlet chamber 4 and the motor air outlet chamber 5, the motor air outlet chamber 5 releases pressure and exhausts from the motor air inlet chamber 4. This can further prevent the motor 110 from running too slowly and too fast due to lack of air flow caused by blockage at the air inlet or blockage of the filter of the dust cup assembly 2, and also features a compact space design.

[0067] Furthermore, the pressure relief valve 13 includes a valve body 131, a valve core 135, and an elastic support 136. The valve body 131 is mounted on the front cover 111 of the motor compartment. The valve body 131 has a first air port 132. A sealing ring 116 is provided between the front cover 111 of the motor compartment and the motor 110. A valve seat 133 is provided between the sealing ring 116 and the valve body 131. A second air port 134 is provided on the valve seat 133. The valve core 135 is located inside the valve seat 133. The elastic support 136 is located between the valve core 135 and the valve body 131. A first pressure relief air duct 1161 is provided on the sealing ring 116, which connects the second air port 134 and the motor air outlet chamber 5.

[0068] For example, such as Figure 2 , Figures 10-11 As shown, a sealing ring 116 is provided between the front cover 111 of the motor compartment and the motor 110. The sealing ring 116 is used to seal the airflow, ensure dust collection efficiency, and protect the internal components of the motor 110. Figures 11-12As shown, the valve body 131 has a U-shaped cross-section and is integrally structured with the front cover 111 of the motor compartment. The valve body 131 has a first air port 132 with a guide post 137 at its center. The sealing ring 116 has a groove 1162. One end of the valve seat 133 is embedded in the groove 1162 and cooperates with the groove 1162 to restrict the movement of the valve seat 133. The other end of the valve seat 133 is in a limiting fit with the valve body 131. The valve seat 133 has a second air port 134 at its center. The elastic support 136 is a spring sleeved on the guide post 137 of the valve body 131, so that the spring is located between the valve body 131 and the valve core 135. Figure 10 and Figure 12 As shown, under normal conditions, the valve core 135 is elastically supported by a spring and shuts off the second air port 134. If the air inlet in front of the motor compartment front cover 111 is blocked or the filter is blocked, a negative pressure will form in front of the motor compartment front cover 111. Under the pressure difference with the front and rear of the motor compartment, the valve core 135 will be pushed against it, causing the valve core 135 to move to the left and compress the spring, opening the shut-off of the second air port 134. Then, air can flow from the first pressure relief duct 1161, the second air port 134, around the inside of the valve core 135 to the first air port 132, thus relieving the negative pressure and preventing air from entering the motor compartment. The motor 110 may run at excessively high speed due to insufficient airflow caused by blockage at the air inlet or blockage of the vacuum cleaner filter. In addition, compared to the separate configuration of valve body 131 and the design of pressure relief valve 13 installation space, by setting an integrated valve body 131 on the front cover 111 of the motor compartment, setting an embedded valve seat 133 on the sealing ring 116 and a first pressure relief air duct 1161, the space can be further compacted, avoiding the redundant space and increased size of the vacuum cleaner after adding pressure relief valve 13. At the same time, it saves parts, takes into account compact space and reduces the risk of failure, and is convenient for manufacturing and use.

[0069] Example 4:

[0070] like Figures 13-17 As shown, another preferred embodiment of the vacuum cleaner of this utility model is different from embodiment 3 in that the motor compartment rear cover 112 of the main unit assembly 1 of the vacuum cleaner is provided with a second pressure relief air duct 1124 that connects the motor air outlet chamber 5 and the outside of the motor compartment assembly 11, which can further facilitate rapid pressure relief.

[0071] For example: Figures 14-15 As shown, the sealing ring 116 is provided with mounting holes 1163, such as... Figures 16-17As shown, the motor compartment rear cover 112 is provided with a cylindrical second pressure relief air duct 1124 with openings at both ends. During assembly, the pressure relief valve 13 is installed between the motor compartment rear cover 112 and the sealing ring 116. The second pressure relief air duct 1124 of the motor compartment rear cover 112 is inserted into the mounting hole 1163 of the sealing ring 116. One end of the second pressure relief air duct 1124 is located inside the sealing ring 116 and communicates with the second air port 134. The other end of the second pressure relief air duct 1124 is connected to the outside of the motor compartment assembly 6. When the pressure relief valve 13 is opened, the second air port 134 and the outside of the motor compartment assembly 11 can be connected through the second pressure relief air duct 1124. By setting the pressure relief valve 13 in the motor air inlet chamber 4 in front of the motor compartment front cover 111 and the outside of the motor compartment assembly 6, it is convenient to install the second pressure relief air duct 1124 and quickly relieve pressure with the pressure relief valve 13, preventing the motor 110 from running too slowly and too fast due to lack of air flow caused by blockage at the air inlet or blockage of the vacuum cleaner filter.

[0072] Example 5:

[0073] like Figures 18-20 As shown, this is another preferred embodiment of the vacuum cleaner of this utility model. The difference from Embodiment 2 is that a motor exhaust chamber 5 is provided inside the motor compartment rear cover 112, and a pressure relief valve 13 is provided between the motor compartment rear cover 112 and the motor exhaust chamber 5. For example: Figure 18 As shown, the pressure relief valve 13 located between the motor compartment rear cover 112 and the motor air outlet cavity 5 can be activated under differential pressure to connect the motor air outlet cavity 5 with the outside of the motor compartment assembly 11, allowing air to enter and relieve pressure from the outside of the motor compartment assembly 11 to the motor air outlet cavity 5. This can further balance the pressure of the motor air outlet cavity 5 and prevent the formation of negative pressure after the continuous discharge of air from the motor air outlet cavity 5, which could damage the core components.

[0074] Furthermore, the motor housing rear cover 112 is provided with a second pressure relief duct 1124 connecting the motor air outlet chamber 5 and the outside of the motor housing assembly 11. A pressure relief valve 13 between the motor housing rear cover 112 and the motor air outlet chamber 5 is disposed on the second pressure relief duct 1124, for example: Figures 18-19 As shown, a sealing ring 116 is provided between the front cover 111 of the motor compartment and the motor 110. A first pressure relief air duct 1161 is provided on the sealing ring 116 to connect to the rear cover 112 of the motor compartment. The second pressure relief air duct 1124 of the rear cover 112 of the motor compartment has a rectangular cross section and can be inserted into the mounting hole 1163 of the sealing ring 116. External air can be supplemented into the motor air outlet cavity 5 through the pressure relief valve 13 along the second pressure relief air duct 1124 and the first pressure relief air duct 1161, which further saves parts, takes into account the compact space and reduces the risk of failure.

[0075] Furthermore, the pressure relief valve 13 includes a valve body 131, a valve core 135, and an elastic support 136. The valve body 131 is disposed on the second pressure relief duct 1124 and has a third air port 138. The valve core 135 is located inside the valve body 131 and has a protruding ridge 1351 that cooperates with the valve body 131. The elastic support 136 is located between the valve core 135 and the second pressure relief duct 1124.

[0076] For example, such as Figures 18-20 As shown, the valve body 131 is connected to the air inlet of the second pressure relief duct 1124. A sealing gasket 139 is provided between the valve body 131 and the second pressure relief duct 1124 to improve the connection sealing. The valve body 131 has a U-shaped cross-section and a third air port 138 is provided in the center. The valve core 135 has a U-shaped cross-section and is located inside the valve body 131. The outer wall of the valve core 135 is provided with a plurality of protruding ridges 1351 that are spaced apart around the valve core 135 and protrude outward. The plurality of protruding ridges 1351 can slide and cooperate with the inner wall of the valve body 131. The valve core 135 is also provided with a plurality of through holes 1352 located between adjacent protruding ridges 1351. The elastic support 136 is a spring with one end set inside the valve core 135 and the other end supported on the second pressure relief duct 1124, so that the spring is located between the valve core 135 and the second pressure relief duct 1124.

[0077] Under normal conditions, the spring-supported valve core 135 closes the third air port 138, thus sealing the second pressure relief duct 1124. If the air inlet in front of the motor housing cover 111 is blocked or the filter is blocked, and air continues to be discharged from the motor outlet chamber 5, causing a negative pressure less than atmospheric pressure to form in the motor outlet chamber 5, the air outside the motor housing assembly 11 will push the valve core 135 through the third air port 138. The protrusion 1351 slides upward along the valve body 131 and further compresses the spring. Then, the air outside the motor housing assembly 11 can enter between adjacent protrusions 1351 through the third air port 138, and then enter the interior of the second pressure relief duct 1124. The through hole 1352 on the valve body 131 can further facilitate gas flow. The incoming air further enters the motor outlet chamber 5 along the second pressure relief duct 1124 and the first pressure relief duct 1161, thus relieving the negative pressure and balancing the pressure inside the motor outlet chamber 5, preventing the motor 110 from running too slowly or at too high a speed due to lack of airflow. After relieving the negative pressure, the valve core 135 can be reset under the action of the spring. Compared with designing a separate installation space for the pressure relief valve 13, by setting the pressure relief valve 13 on the second pressure relief duct 1124 of the motor compartment rear cover 112, the space can be further compacted, avoiding the space redundancy and increased size of the vacuum cleaner after adding the pressure relief valve 13. At the same time, the design of the valve core 135 and its installation position further saves parts, taking into account both compact space and reduced failure risk, and is easy to manufacture and use.

[0078] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. All equivalent embodiments or modifications made without departing from the spirit of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A host component, characterized in that, The device includes a motor housing assembly (11) and a main body assembly (12). The motor housing assembly (11) includes a motor (110), a front cover (111) and a rear cover (112) of the motor housing located outside the motor (110) and detachably connected. The front cover (111) of the motor housing is provided with a first latch (1111). The main body assembly (12) includes an annular frame (120). The two sides of the annular frame (120) are respectively limited and cooperate with the front cover (111) and the rear cover (112) of the motor housing. The annular frame (120) is provided with a pin (121) that cooperates with the first latch (1111).

2. The host component according to claim 1, characterized in that, The front cover (111) of the motor compartment is provided with a pin (1112), and the rear cover (112) of the motor compartment is provided with a boss (1121) that cooperates with the pin (1112); the rear cover (112) of the motor compartment is provided with a first buckle (1122), and the annular frame (120) is provided with a second buckle (122) that cooperates with the first buckle (1122).

3. The host component according to claim 1, characterized in that, A decorative cover (113) is detachably connected to the outside of the motor compartment rear cover (112).

4. The host component according to claim 3, characterized in that, The motor compartment rear cover (112) is provided with a third latch (1123), and the decorative cover (113) can cover the third latch (1123). The decorative cover (113) has at least two opposing second buckles (1131) on its inner side. The second buckles (1131) can extend into the third latch (1123) and engage with the inner side of the motor compartment rear cover (112).

5. The host component according to claim 1, characterized in that, The main body assembly (12) includes a detachably connected main frame (123), a main frame front body (124), and a main frame front cover (125). The main frame front body (124) is provided with a slot (1241) that mates with the main frame (123).

6. The host component according to claim 1, characterized in that, The motor compartment rear cover (112) is provided with a motor air outlet chamber (5), and a pressure relief valve (13) is provided between the motor compartment front cover (111) and the motor air outlet chamber (5) or between the motor compartment rear cover (112) and the motor air outlet chamber (5).

7. The host component according to claim 6, characterized in that, The pressure relief valve (13) includes a valve body (131), a valve core (135), and an elastic support (136). The valve body (131) is mounted on the front cover (111) of the motor compartment. The valve body (131) has a first air port (132). A sealing ring (116) is provided between the front cover (111) of the motor compartment and the motor (110). A valve seat (133) is provided between the sealing ring (116) and the valve body (131). A second air port (134) is provided on the valve seat (133). The valve core (135) is located inside the valve seat (133). The elastic support (136) is located between the valve core (135) and the valve body (131). A first pressure relief air duct (1161) is provided on the sealing ring (116) to connect the second air port (134) and the motor air outlet (5).

8. The host component according to claim 6, characterized in that, The rear cover (112) of the motor compartment is provided with a second pressure relief air duct (1124) that connects the motor air outlet cavity (5) with the outside of the motor compartment assembly (11).

9. The host component according to claim 8, characterized in that, The pressure relief valve (13) includes a valve body (131), a valve core (135), and an elastic support (136). The valve body (131) is disposed on the second pressure relief duct (1124). The valve body (131) is provided with a third air port (138). The valve core (135) is located inside the valve body (131). The valve core (135) is provided with a protruding ridge (1351) that cooperates with the valve body (131). The elastic support (136) is located between the valve core (135) and the second pressure relief duct (1124).

10. A vacuum cleaner, characterized in that, The main unit (1) includes any one of claims 1 to 9, wherein the motor compartment assembly (11) is connected to the dust cup assembly (2), and the main body assembly (12) is connected to the battery pack assembly (3).

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