Vacuum motor

Abstract

The present invention relates to the technical field of vacuum equipment, and discloses a vacuum motor, which includes a shell having a storage chamber inside; a vacuum spacer located in the storage chamber and having an inner chamber, the inner chamber cooperates with the first inner wall of the storage chamber to form a vacuum chamber; an electromagnetic component, including an excitation coil, a stator and a rotor, the rotor is located in the vacuum chamber, the excitation coil is sleeved on the outer wall of the vacuum spacer, and the stator is sleeved on the outer wall of the excitation coil; and an output shaft that passes through the first inner wall, and the rotor is sleeved on the outer wall of the output shaft. The connecting end of the output shaft is fixedly connected to the rotor, and the output end of the output shaft is extended to the outside of the storage chamber, so that the rotor can be directly connected to the external device of the vacuum motor, and the vacuum motor has good sealing performance, which prevents leakage of the vacuum chamber due to damage to the moving sealing ring; the volume of the vacuum chamber does not need to be too large, and it only needs to contain the rotor, and there is only a pure mechanical connection inside, so that the overall structure of the vacuum motor is compact and the kinetic energy transfer efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum equipment, and in particular to a vacuum motor. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction. Its working principle is usually to convert the electrical energy generated by electromagnetic induction into mechanical energy. The main function of the motor is to generate driving torque as a power source for other electrical appliances or various machines.

[0003] When the motor is used in a vacuum device, the inside of the motor needs to be vacuum-sealed to prevent air leakage, and vacuum sealing solutions usually include three forms: magnetic fluid sealing, magnetic conduction sealing, and a moving sealing ring arranged on the outer wall of the output shaft. However, the magnetic fluid sealing and magnetic conduction sealing methods have a large sealing volume, and the cost of magnetic conduction is high and the efficiency is low. The moving sealing ring is easily damaged, which will eventually cause air leakage in the vacuum chamber inside the motor.

[0004] Therefore, how to design a vacuum motor with compact structure, high kinetic energy transfer efficiency and good sealing has become a technical problem to be solved urgently in this field. Summary of the invention

[0005] The purpose of the present invention is to at least solve the technical problem of how to design a vacuum motor with compact structure, high kinetic energy transmission efficiency and good sealing. This purpose is achieved through the following technical solutions:

[0006] In the first aspect, the present invention proposes a vacuum motor, which includes: a shell, the interior of the shell has a containing chamber; a vacuum sleeve, located in the containing chamber, the vacuum sleeve has an inner chamber, and the inner chamber cooperates with the first inner wall of the containing chamber to form a vacuum chamber; an electromagnetic component, located in the containing chamber, the electromagnetic component includes an excitation coil, a stator and a rotor, the rotor is located in the vacuum chamber, the excitation coil is sleeved on the outer wall of the vacuum sleeve, and the stator is sleeved on the outer wall of the excitation coil; and an output shaft, passing through the first inner wall, the rotor is sleeved on the outer wall of the output shaft, the connecting end of the output shaft is fixedly connected to the rotor, and the output end of the output shaft protrudes to the outside of the containing chamber; the output shaft, the rotor, the vacuum sleeve, the excitation coil and the stator are all coaxially arranged.

[0007] When assembling this vacuum motor, the rotor in the electromagnetic assembly is placed in the inner chamber of the vacuum sleeve, and a vacuum chamber is formed by the cooperation of the vacuum sleeve and the first inner wall, and the connecting end of the output shaft is fixedly connected to the rotor, and the output end of the output shaft is extended to the outside of the containing chamber, so that the rotor can be directly connected to the electrical equipment or other machinery outside the vacuum motor, thereby ensuring the basic functionality of the vacuum motor; moreover, due to the presence of the vacuum sleeve, there is no need to provide a moving sealing ring on the outer wall of the output shaft, thereby avoiding the phenomenon of vacuum chamber leakage due to damage to the moving sealing ring; in addition, the sealing volume of the vacuum chamber does not need to be too large, and it is only necessary to include the rotor therein, that is, there is only a pure mechanical connection in the vacuum chamber (that is, the connecting end of the output shaft is connected to the rotor), which makes the overall structure of the vacuum motor compact, improves the kinetic energy transfer efficiency and its service life.

[0008] In some embodiments of the present invention, the shell and the output shaft both extend along a first direction, and along the first direction, the two inner walls located on both sides of the accommodating chamber are respectively a first inner wall and a second inner wall; the vacuum motor also includes a thermally conductive adhesive, which is located in the accommodating chamber, and the thermally conductive adhesive sleeve is provided on the outer wall of the stator, and the thermally conductive adhesive cooperates with the first inner wall and the second inner wall to form a transition chamber, and the electromagnetic assembly and the vacuum sleeve are both located in the transition chamber.

[0009] In some embodiments of the present invention, the vacuum motor further comprises a first sealing ring, and along the first direction, the first sealing ring is located between the first inner wall and the vacuum sleeve.

[0010] In some embodiments of the present invention, the vacuum sleeve also includes an annular curl, one end of the vacuum sleeve has an opening connected to the inner chamber, the annular curl is arranged around the circumferential direction of the opening, and along the first direction, the first sealing ring is located between the first inner wall and the annular curl.

[0011] In some embodiments of the present invention, the vacuum motor further comprises a second sealing ring, and along the first direction, the second sealing ring is located between the thermal conductive adhesive and the second inner wall.

[0012] In some embodiments of the present invention, the shell includes: a base having a first bin, a first inner wall located in the first bin, and a back cover arranged along a first direction with the base and detachably connected to the base, the back cover having a second bin, a second inner wall located in the second bin, and the second bin cooperates with the first bin to form a accommodating bin.

[0013] In some embodiments of the present invention, the vacuum motor further comprises a third sealing ring, and along the first direction, the third sealing ring is located between the base and the rear cover.

[0014] In some embodiments of the present invention, the vacuum motor further comprises a screw, the base is provided with a first threaded hole cooperating with the screw, the rear cover is provided with a second threaded hole cooperating with the screw, and the base and the rear cover are connected by the screw.

[0015] In some embodiments of the present invention, the base includes: a base body having a through hole connected to the inner compartment; and a mounting plate connected to the base body, along the first direction, the mounting plate is located on the side of the base body away from the rear cover; the mounting plate has a mounting hole for cooperating with the output shaft, and the output shaft passes through the mounting hole and the through hole.

[0016] In some embodiments of the present invention, the mounting plate is detachably connected to the base body.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of the structure of a vacuum motor provided by an embodiment of the present invention;

[0020] Figure 2 An exploded diagram of the structure of a vacuum motor provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of a vacuum motor provided by an embodiment of the present invention when a thermal conductive adhesive is configured;

[0022] Figure 4 A schematic diagram of the internal structure of a vacuum motor provided by an embodiment of the present invention when the thermal conductive adhesive is removed;

[0023] Figure 5 A schematic diagram of the structure of a base at an angle in a vacuum motor provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of the base of the vacuum motor provided by an embodiment of the present invention at another angle;

[0025] Figure 7 A schematic diagram of the structure of a base body of a vacuum motor provided in an embodiment of the present invention at an angle;

[0026] Figure 8 A schematic structural diagram of a base body of a vacuum motor provided in an embodiment of the present invention at another angle.

[0027] The reference numerals are as follows:

[0028] 1000. Vacuum motor;

[0029] 100, housing; 110, base; 111, seat body; 1111, inner surface; 1112, through hole; 112, mounting plate; 1121, joint surface; 1122, mounting hole; 1110, first chamber; 1101, first inner wall; 120, rear cover; 1210, second chamber; 1201, second inner wall; 101, vacuum chamber;

[0030] 200, vacuum spacer; 210, annular curling; 2101, mounting plane; 220, opening;

[0031] 310, excitation coil; 320, stator; 330, rotor;

[0032] 400, output shaft;

[0033] 500, thermal conductive adhesive;

[0034] 610, first sealing ring; 620, second sealing ring; 630, third sealing ring;

[0035] 710, first mounting slot; 720, second mounting slot; 730, third mounting slot;

[0036] 810, first connection part; 811, first threaded hole; 820, second connection part; 821, second threaded hole. DETAILED DESCRIPTION

[0037] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0038] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0040] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, the element described as "below other elements or features" or "below other elements or features" will be subsequently oriented to "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0041] Figure 1 A schematic diagram of the structure of a vacuum motor provided by an embodiment of the present invention; Figure 2 An exploded diagram of the structure of a vacuum motor provided by an embodiment of the present invention; Figure 3 A schematic diagram of the internal structure of a vacuum motor provided by an embodiment of the present invention when a thermal conductive adhesive is configured; Figure 4 A schematic diagram of the internal structure of a vacuum motor provided by an embodiment of the present invention when the thermal conductive adhesive is removed.

[0042] like Figures 1 to 4As shown, an embodiment of the present invention provides a vacuum motor 1000, which includes: a housing 100, wherein the housing 100 has a containing chamber inside; a vacuum sleeve 200, which is located in the containing chamber, wherein the vacuum sleeve 200 has an inner chamber, wherein the inner chamber cooperates with a first inner wall 1101 of the containing chamber to form a vacuum chamber 101; an electromagnetic assembly, which is located in the containing chamber, wherein the electromagnetic assembly includes an excitation coil 310, a stator 320 and a rotor 330, wherein the rotor 330 is located in the vacuum chamber 101, The excitation coil 310 is sleeved on the outer wall of the vacuum sleeve 200, and the stator 320 is sleeved on the outer wall of the excitation coil 310; and the output shaft 400 passes through the first inner wall 1101, and the rotor 330 is sleeved on the outer wall of the output shaft 400, and the connecting end of the output shaft 400 is fixedly connected to the rotor 330, and the output end of the output shaft 400 protrudes to the outside of the containing chamber; the output shaft 400, the rotor 330, the vacuum sleeve 200, the excitation coil 310 and the stator 320 are all coaxially arranged.

[0043] In this embodiment, when assembling the vacuum motor 1000, the rotor 330 in the electromagnetic assembly is placed in the inner chamber of the vacuum sleeve 200, and the vacuum chamber 101 is formed by the cooperation between the vacuum sleeve 200 and the first inner wall 1101, and the connecting end of the output shaft 400 is fixedly connected to the rotor 330, and the output end of the output shaft 400 is extended to the outside of the containing chamber, so that the rotor 330 can be directly connected to the electrical appliances or other machinery outside the vacuum motor 1000, thereby ensuring the basic functionality of the vacuum motor 1000.

[0044] Furthermore, due to the presence of the vacuum spacer 200 , there is no need to provide a moving sealing ring on the outer wall of the output shaft 400 , thereby avoiding the phenomenon of leakage of the vacuum chamber 101 due to damage of the moving sealing ring.

[0045] In addition, the sealing volume of the vacuum chamber 101 does not need to be too large, and it only needs to include the rotor 330 therein, that is, there is only a purely mechanical connection in the vacuum chamber 101 (that is, the connecting end of the output shaft 400 is connected to the rotor 330), which makes the overall structure of the vacuum motor 1000 compact, improves the kinetic energy transfer efficiency and its service life.

[0046] Therefore, the vacuum motor 1000 has the beneficial effects of compact structure, high kinetic energy transmission efficiency and good sealing.

[0047] refer to Figures 1 to 4According to an optional embodiment of the present invention, the shell 100 and the output shaft 400 both extend along the first direction. Along the first direction, the two inner walls located on both sides of the accommodating chamber are respectively the first inner wall 1101 and the second inner wall 1201; the vacuum motor 1000 also includes a thermal conductive adhesive 500, which is located in the accommodating chamber, and the thermal conductive adhesive 500 is sleeved on the outer wall of the stator 320. The thermal conductive adhesive 500 cooperates with the first inner wall 1101 and the second inner wall 1201 to form a transition chamber, and the electromagnetic component and the vacuum sleeve 200 are both located in the transition chamber.

[0048] Wherein, along the first direction, two ends of the thermal conductive adhesive 500 may respectively abut against the first inner wall 1101 and the second inner wall 1201 to form a relatively sealed transition chamber.

[0049] In addition, it should be noted that Figure 3 and Figure 4 The schematic diagrams are for showing the internal structure of the vacuum motor 1000 and clarifying the specific position of the thermal conductive adhesive 500 when the vacuum motor 1000 is assembled. Figure 3 and Figure 4 is a cross-sectional view of a certain section, for example Figure 3 The oblique lines in FIG. 5 are only for indicating the position of the thermal conductive adhesive 500 and do not represent that they are section lines.

[0050] In the present embodiment, since the interior of the vacuum chamber 101 formed by the vacuum sleeve 200 and the first inner wall 1101 is a vacuum environment, during the operation of the vacuum motor 1000, due to the large pressure difference between the vacuum chamber 101 and the external atmosphere, the vacuum sleeve 200 may easily sink inward, which may easily affect the occurrence of electromagnetic induction and thus affect the overall working efficiency of the vacuum motor 1000.

[0051] Therefore, in this embodiment, a thermal conductive adhesive 500 is provided, that is, the electromagnetic assembly and the vacuum sleeve 200 are both arranged in a transition chamber formed by the thermal conductive adhesive 500, the first inner wall 1101 and the second inner wall 1201. The transition chamber serves as a buffer between the vacuum chamber 101 and the external atmosphere. The thermal conductive adhesive 500 can be understood as a transition layer located between the vacuum sleeve 200 and the inner wall of the shell 100. The transition layer can slow down the inward depression of the vacuum sleeve 200 due to the excessive pressure difference between the vacuum chamber 101 and the external atmosphere, thereby ensuring the overall working efficiency of the vacuum motor 1000 to a certain extent.

[0052] In addition, it is easy to understand that the driving method of the vacuum motor 1000 is to first energize the excitation coil 310. Since the excitation coil 310 is sleeved on the outer wall of the vacuum sleeve 200, the stator 320 is sleeved on the outer wall of the excitation coil 310, and the connecting end of the output shaft 400 is connected to the rotor 330, then according to the principle of electromagnetic induction, the electromagnetic component will convert the electrical energy generated by the excitation coil 310 into mechanical energy, so that the rotor 330 rotates, and then the rotor 330 drives the output shaft 400 to rotate, so as to realize the power source output of the vacuum motor 1000.

[0053] According to the driving method of the vacuum motor 1000 mentioned above, it is not difficult to know that heat will inevitably be generated when the rotor 330 drives the output shaft 400 to rotate. The setting of the thermal conductive adhesive 500 in this embodiment can also make the heat generated by the vacuum motor 1000 during operation be evenly transferred to the shell 100. Finally, the heat will dissipate into the external atmosphere, thereby improving the overall heat dissipation efficiency of the vacuum motor 1000, thereby avoiding the vacuum motor 1000 from being damaged due to excessive local temperature, and further ensuring the service life of the vacuum motor 1000.

[0054] refer to Figures 2 to 4 According to an optional embodiment of the present invention, the vacuum motor 1000 further includes a first sealing ring 610 , and along the first direction, the first sealing ring 610 is located between the first inner wall 1101 and the vacuum sleeve 200 .

[0055] In this embodiment, a first sealing ring 610 is provided between the first inner wall 1101 and the vacuum sleeve 200 in order to further ensure the sealing performance of the vacuum chamber 101 .

[0056] Specifically, Figure 2 As shown, according to an optional embodiment of the present invention, the vacuum sleeve 200 also includes an annular curling edge 210, and one end of the vacuum sleeve 200 has an opening 220 connected to the inner chamber. The annular curling edge 210 is arranged around the circumferential direction of the opening 220. Along the first direction, the first sealing ring 610 is located between the first inner wall 1101 and the annular curling edge 210.

[0057] In this embodiment, it is easy to understand that the diameter of the annular curling edge 210 should be larger than the diameter of the opening 220 to facilitate the subsequent assembly of the first sealing ring 610 .

[0058] Continue to refer Figures 2 to 4 According to an optional embodiment of the present invention, the vacuum motor 1000 further includes a second sealing ring 620 , and along the first direction, the second sealing ring 620 is located between the thermal conductive adhesive 500 and the second inner wall 1201 .

[0059] In this embodiment, as described above, the two ends of the thermal conductive adhesive 500 can respectively abut against the first inner wall 1101 and the second inner wall 1201 to form a relatively sealed transition chamber; when one end of the thermal conductive adhesive 500 abuts against the second inner wall 1201, a second sealing ring 620 can be set between the thermal conductive adhesive 500 and the second inner wall 1201 to further ensure the sealing of the transition chamber, while also being able to improve the assembly stability of the thermal conductive adhesive 500.

[0060] Figure 5 A schematic diagram of the structure of a base at an angle in a vacuum motor provided by an embodiment of the present invention; Figure 6 A schematic diagram of the structure of the base of the vacuum motor provided by the embodiment of the present invention at another angle; Figures 1 to 6 According to an optional embodiment of the present invention, the shell 100 includes: a base 110, having a first bin 1110, a first inner wall 1101 located in the first bin 1110, and a back cover 120, arranged along a first direction with the base 110 and detachably connected to the base 110, the back cover 120 having a second bin 1210, the second inner wall 1201 located in the second bin 1210, and the second bin 1210 cooperates with the first bin 1110 to form a accommodating bin.

[0061] In this embodiment, it is not difficult to understand that the shell 100 is configured in a detachable connection manner to facilitate the assembly of the vacuum sleeve 200 and the electromagnetic component inside the containing chamber.

[0062] like Figures 1 to 4 As shown, according to an optional embodiment of the present invention, the vacuum motor 1000 further includes a third sealing ring 630 . Along the first direction, the third sealing ring 630 is located between the base 110 and the rear cover 120 .

[0063] In this embodiment, it is easy to understand that since the shell 100 is formed by the base 110 and the back cover 120 being assembled in a detachable connection, in order to ensure the sealing between the two, a third sealing ring 630 is provided between the base 110 and the back cover 120 .

[0064] refer to Figure 2 , Figure 5 and Figure 6 According to an optional embodiment of the present invention, the vacuum motor 1000 also includes a screw (not shown in the figure), the base 110 is provided with a first threaded hole 811 that cooperates with the screw, the rear cover 120 is provided with a second threaded hole 821 that cooperates with the screw, and the base 110 and the rear cover 120 are connected by screws.

[0065] In this embodiment, during assembly, the base 110 and the rear cover 120 are connected by screws to finally form the housing 100; this operation is simple and convenient, and the connection is reliable, which can improve the overall assembly efficiency of the vacuum motor 1000.

[0066] Specifically, there can be multiple screws; multiple first connection parts 810 can be evenly spaced on the base 110 around the circumference of the first compartment 1110, and each first connection part 810 is provided with a first threaded hole 811; and multiple second connection parts 820 can be evenly spaced on the back cover 120 around the circumference of the second compartment 1210, and each second connection part 820 is provided with a second threaded hole 821; multiple screws, multiple first connection parts 810, and multiple second connection parts 820 are arranged one by one. This arrangement method can not only facilitate the insertion of screws, but also further ensure the stability of the connection between the base 110 and the back cover 120.

[0067] Figure 7 A schematic diagram of the structure of a base body of a vacuum motor provided in an embodiment of the present invention at an angle; Figure 8 A schematic diagram of the structure of the base of the vacuum motor provided by the embodiment of the present invention at another angle; Figures 1 to 8 As shown, according to an optional embodiment of the present invention, the base 110 includes: a base body 111, having a through hole 1112 connected to the inner bin; and a mounting plate 112, connected to the base body 111, along the first direction, the mounting plate 112 is located on the side of the base body 111 away from the rear cover 120; the mounting plate 112 has a mounting hole 1122 for cooperating with the output shaft 400, and the output shaft 400 passes through the mounting hole 1122 and the through hole 1112.

[0068] In this embodiment, the inner diameter of the mounting hole 1122 should match the outer diameter of the output shaft 400 to facilitate accurate positioning of the output shaft 400, thereby ensuring the working accuracy of the vacuum motor 1000 during operation.

[0069] In addition, since the structure of the base 110 is described in detail in this embodiment, Figures 1 to 8 , the specific assembly methods of the above three sealing rings are also described in detail:

[0070] First, for the first sealing ring 610, a first mounting groove 710 may be provided on the first inner wall 1101, such as Figure 2 , Figure 6 and Figure 8 As shown; the annular curling edge 210 should have a mounting plane 2101, such as Figure 2 As shown; during assembly, the first sealing ring 610 is embedded in the first installation groove 710 on the first inner wall 1101, and then the installation plane 2101 of the annular curling edge 210 is tightly fitted with the first inner wall 1101 to further enhance the sealing effect of the first sealing ring 610 between the first inner wall 1101 and the vacuum sleeve 200, thereby further preventing the vacuum chamber 101 from leaking.

[0071] It is easy to understand that during assembly, one side of the mounting plate 112 should fit tightly with the seat body 111. Figure 1 and along the first direction, from the seat body 111 toward the mounting plate 112, a portion of the side will leak through the through hole 1112, for ease of description, the portion is named the bonding surface 1121, such as Figure 6 As shown; eventually the joint surface 1121 will constitute a part of the first inner wall 1101 of the accommodating chamber, that is, the first inner wall 1101 is composed of the joint surface 1121 of the mounting plate 112 and an inner surface 1111 of the seat body 111 (that is, the part around the through hole 1112 of the seat body 111), and the first mounting groove 710 can be arranged on the inner surface 1111.

[0072] Then, for the second sealing ring 620, similar to the assembly method of the first sealing ring 610, a second mounting groove 720 can be set on the second inner wall 1201, such as Figure 2 As shown; during assembly, the second sealing ring 620 is embedded in the second mounting groove 720 on the second inner wall 1201 to further enhance the sealing effect of the second sealing ring 620 between the thermal conductive adhesive 500 and the second inner wall 1201 .

[0073] Next, for the third sealing ring 630, the assembly method is similar to that of the first sealing ring 610. A third mounting groove 730 can be provided on the base body 111 of the base 110, such as Figure 6 and Figure 8 As shown; during assembly, the third sealing ring 630 is embedded in the third mounting groove 730 on the base body 111 to further enhance the sealing effect of the third sealing ring 630 between the base body 111 and the back cover 120.

[0074] According to an optional embodiment of the present invention, the mounting plate 112 is detachably connected to the seat body 111 .

[0075] The mounting plate 112 and the seat body 111 can be connected by flange connection, which has high stability and strong sealing performance. It is easy to understand that the flange size can be selected from the general motor specification size to improve assembly efficiency and save costs to a certain extent.

[0076] It should be noted that the specific connection method between the mounting plate 112 and the seat body 111 is not limited. Here, only the flange connection is used as an example. Under actual working conditions, a suitable connection method can be selected according to working conditions.

[0077] In this embodiment, as mentioned above, in order to achieve precise positioning of the output shaft 400, the inner diameter of the mounting hole 1122 should match the outer diameter of the output shaft 400, that is, one mounting hole 1122 can only cooperate with an output shaft 400 with one outer diameter size; therefore, in order to enable the vacuum motor 1000 to be suitable for output shafts 400 with different outer diameter sizes, each seat body 111 can be equipped with multiple mounting plates 112, and the mounting holes 1122 of each mounting plate 112 respectively correspond to output shafts 400 with different outer diameter sizes.

[0078] Therefore, in this embodiment, the mounting plate 112 and the seat body 111 are designed to be detachably connected to facilitate the replacement of different mounting plates 112, so that the vacuum motor 1000 can eventually cooperate with the output shaft 400 with different outer diameters, thereby improving the use scenarios of the vacuum motor 1000.

[0079] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A vacuum motor, characterized in that: include: A shell extends along a first direction, wherein the shell has a storage compartment inside, and along the first direction, two inner walls located on both sides of the storage compartment are respectively a first inner wall and a second inner wall; A vacuum sleeve is located in the containing chamber, wherein the vacuum sleeve has an inner chamber, and the inner chamber cooperates with the first inner wall of the containing chamber to form a vacuum chamber; An electromagnetic assembly is located in the containing chamber, the electromagnetic assembly comprises an excitation coil, a stator and a rotor, the rotor is located in the vacuum chamber, the excitation coil is sleeved on the outer wall of the vacuum sleeve, and the stator is sleeved on the outer wall of the excitation coil; an output shaft extending along the first direction, the output shaft passing through the first inner wall, the rotor being sleeved on the outer wall of the output shaft, the connecting end of the output shaft being fixedly connected to the rotor, and the output end of the output shaft protruding out of the containing chamber; the output shaft, the rotor, the vacuum sleeve, the excitation coil and the stator are all coaxially arranged; and Thermally conductive adhesive, the thermally conductive adhesive is located in the containing chamber, and the thermally conductive adhesive sleeve is arranged on the outer wall of the stator, the thermally conductive adhesive cooperates with the first inner wall and the second inner wall to form a transition chamber, and the electromagnetic component and the vacuum spacer sleeve are both located in the transition chamber.

2. The vacuum motor according to claim 1, characterized in that: The vacuum motor further comprises a first sealing ring, and along the first direction, the first sealing ring is located between the first inner wall and the vacuum sleeve.

3. The vacuum motor according to claim 2, characterized in that: The vacuum sleeve also includes an annular curling edge, one end of the vacuum sleeve has an opening connected to the inner chamber, the annular curling edge is arranged around the circumferential direction of the opening, and along the first direction, the first sealing ring is located between the first inner wall and the annular curling edge.

4. The vacuum motor according to claim 1, characterized in that: The vacuum motor further comprises a second sealing ring, and along the first direction, the second sealing ring is located between the thermal conductive adhesive and the second inner wall.

5. The vacuum motor according to any one of claims 1 to 4, characterized in that: The housing comprises: A base having a first compartment, wherein the first inner wall is located in the first compartment, and The back cover is arranged along the first direction with the base and is detachably connected to the base. The back cover has a second bin. The second inner wall is located in the second bin. The second bin cooperates with the first bin to form the accommodating bin.

6. The vacuum motor according to claim 5, characterized in that: The vacuum motor further includes a third sealing ring, and along the first direction, the third sealing ring is located between the base and the rear cover.

7. The vacuum motor according to claim 5, characterized in that: The vacuum motor also includes a screw, the base is provided with a first threaded hole matched with the screw, the rear cover is provided with a second threaded hole matched with the screw, and the base and the rear cover are connected by the screw.

8. The vacuum motor according to claim 5, characterized in that: The base comprises: A seat body having a through hole communicating with the inner compartment; and The mounting plate is connected to the seat body. Along the first direction, the mounting plate is located on the side of the seat body away from the rear cover. The mounting plate has a mounting hole for cooperating with the output shaft, and the output shaft passes through the mounting hole and the through hole.

9. The vacuum motor according to claim 8, characterized in that: The mounting plate is detachably connected to the seat body.

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