Thin Pump
The thin pump design addresses the issue of coupling damage and space inefficiency by integrating the motor and impeller with a shared shaft, enhancing convenience and reliability through reduced volume and integrated leakage protection.
Patent Information
- Application Number
- JP2025002720U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2025-03-31
- Filing Date
- 2025-08-08
- Publication Date
- 2025-10-06
- Estimated Expiration
- 2035-08-08
AI Technical Summary
Conventional pumps connect the motor and impeller via a coupling, which is prone to damage and increases the pump's volume and installation space, making them inconvenient to use.
A thin pump design where the motor and impeller share a shaft, eliminating the need for a coupling and reducing the axial length of the motor, thus minimizing the pump's volume and installation space.
The shared shaft configuration reduces the pump's axial length and volume, minimizing installation space requirements while preventing coupling damage and providing liquid leakage detection and drainage features to protect the motor.
Smart Images

Figure 0003253115000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a pump, and more particularly to a low-profile pump. [Background technology]
[0002] Generally, pumps have a structure having a motor and an impeller, but the motor is often a commercially available product and is not necessarily directly attached to the impeller, so in conventional pumps, the motor and impeller are connected via a coupling. However, the coupling is at risk of being damaged during long-term operation, and the need to attach the coupling increases the volume of the pump and the installation space. Furthermore, conventional pumps often use large motors, which also require a large space for the pump, making them inconvenient to use. Summary of the Invention [Problem to be solved by the invention]
[0003] The present invention provides a thin pump, which solves the problem that in conventional pumps, the motor and impeller are connected via a coupling, which not only poses a risk of damage to the coupling, but also increases the volume of the pump due to the need to install the coupling, increasing the installation space and making it inconvenient to use the space. [Means for solving the problem]
[0004] To achieve the above object, the present invention provides a thin pump. The thin pump has a casing, a thin motor, and a shaft; the casing having an inlet and an outlet and at least one impeller disposed within the casing; the thin motor is connected to the casing, and the axial length of the thin motor is shorter than the axial length of the casing; The shaft is provided within the thin motor, protrudes from the thin motor, and penetrates at least one impeller of the casing, so that the at least one impeller is rotationally driven by the thin motor and the shaft. [Effects of the Invention]
[0005] The advantage of this invention is that the thin motor and the impeller share the same shaft, thereby shortening the axial length of the thin motor, thereby shortening the axial length of the entire thin pump and reducing the volume of the thin pump, thereby reducing the space required to install the thin pump. [Brief explanation of the drawings]
[0006] [Figure 1] FIG. 1 is a perspective view of a first embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of the first embodiment of the present invention seen from a different angle. [Figure 3] FIG. 1 is a side view of embodiment 1 of the present invention. [Figure 4] FIG. 1 is an exploded view of the first embodiment of the present invention. [Figure 5] FIG. 2 is an exploded view of the first embodiment of the present invention seen from another angle. [Figure 6] FIG. 1 is a cross-sectional view of embodiment 1 of the present invention. [Figure 7] FIG. 2 is a perspective view of a second embodiment of the present invention. [Figure 8] FIG. 10 is a perspective view of the second embodiment of the present invention seen from a different angle. [Figure 9] FIG. 2 is a side view of the second embodiment of the present invention. [Figure 10] FIG. 10 is a perspective view of a third embodiment of the present invention. [Figure 11] FIG. 3 is an exploded view of the third embodiment of the present invention. [Figure 12] FIG. 3 is a cross-sectional view of a third embodiment of the present invention. [Figure 13] FIG. 10 is a partial cross-sectional view of a bracket according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0007] 1 to 4, the present invention provides a thin pump having a casing 10, a thin motor 20, a shaft 30, a bracket 40, an outlet portion 50, and an inlet portion 60. In other embodiments, the bracket 40 may not be provided.
[0008] 1, 3, 4, and 5, the casing 10 has an inlet 11, an outlet 12, and at least one impeller 13, the inlet 11 and the outlet 12 each penetrating one wall of the casing 10 and communicating with each other, the impeller 13 is installed within the casing 10, the thin motor 20 is connected to the casing 10, and the axial length of the thin motor 20 is shorter than that of the casing 10, and the shaft 30 is installed within the thin motor 20, protruding from the thin motor 20 and drilled into the impeller 13 of the casing 10, so that the impeller 13 is rotated by the thin motor 20 and the shaft 30. As a result, the thin motor 20 of the present invention can directly rotate the impeller 13 without using a coupling, thereby reducing the space required for installing a coupling.
[0009] 1 and 2, the bracket 40 is provided between the thin motor 20 and the casing 10, the shaft 30 is inserted through the bracket 40, and the casing 10 and the thin motor 20 are positioned coaxially by the shaft 30. Specifically, the bracket 40 has a sleeve 41, a motor contact portion 42, and a casing contact portion 43, and the sleeve 41 is provided between the thin motor 20 and the casing 10 and surrounds the shaft 30. The motor contact portion 42 is provided around the outer ring surface of one end of the sleeve 41 that is closer to the thin motor 20, extends outward from the outer ring surface of the sleeve 41 in parallel with the radial direction of the sleeve 41, and is in close contact with the outer ring edge of the side of the thin motor 20 that faces the casing 10 so as to surround the outer ring edge. The casing contact portion 43 is provided around the outer ring surface of the sleeve 41 at one end closest to the casing 10, extends outward from the outer ring surface of the sleeve 41 in parallel to the radial direction of the sleeve 41, and is in close contact with the vicinity of the outer ring edge of the side of the casing 10 facing the thin motor 20 so as to surround the vicinity of the outer ring edge. This allows the bracket 40 to separate the thin motor 20 from the casing 10, and also to lift the casing 10 so that the casing 10 and the thin motor 20 are positioned on the same axis.
[0010] As shown in Figures 1, 3, 4, and 6, in the first embodiment, the outlet portion 50 is provided in the casing 10 and communicates with the outlet 12 of the casing 10 and the outside of the casing 10. The outlet portion 50 has an axial outlet wall surface 51, a radial outlet wall surface 52, and a plurality of outlet through holes 53. The axial outlet wall surface 51 is parallel to the axial direction of the outlet portion 50 and surrounds the outlet 12. The radial outlet wall surface 52 is provided around the outer ring surface of the axial outlet wall surface 51 and extends outward from the outer ring surface of the axial outlet wall surface 51 in a direction parallel to the radial direction of the outlet portion 50. The outlet through hole 53 penetrates the radial outlet wall surface 52 along the axial direction of the outlet portion 50, so that a user can fasten a member that abuts the outlet portion 50 to the outlet portion 50 by drilling a fastening member such as a screw into the outlet through hole 53.
[0011] The inlet portion 60 is provided in the casing 10 and communicates with the inlet 11 of the casing 10 and the outside of the casing 10. The inlet portion 60 has an axial inlet wall surface 61, a radial inlet wall surface 62, and a plurality of inlet through holes 63. The axial inlet wall surface 61 is parallel to the axial direction of the inlet portion 60 and surrounds the inlet 11. The radial inlet wall surface 62 is provided around the outer ring surface of the axial inlet wall surface 61 and extends outward from the outer ring surface of the axial inlet wall surface 61 in parallel to the radial direction of the inlet portion 60. The inlet through hole 63 penetrates the radial inlet wall surface 62 along the axial direction of the inlet portion 60, so that a user can fix a member that abuts against the inlet portion 60 to the inlet portion 60 by drilling a fixing member such as a screw into the inlet through hole 63.
[0012] 7 to 9, the technical features of the second embodiment of the present invention are similar to those of the first embodiment, but differ from the first embodiment in that the outlet portion 50 and the inlet portion 60 are both pipes, and the cross sections of the pipes of the outlet portion 50 and the inlet portion 60 are both polygonal. Specifically, the inner wall surfaces of the outlet portion 50 and the inlet portion 60 are both provided with threads (not shown), which allows the user to use a tool to screw the target pipe into the outlet portion 50 and the inlet portion 60.
[0013] As shown in FIGS. 10 to 13 , the technical features of embodiment 3 of the present invention are similar to those of embodiment 1, but differ from embodiment 1 in that the bracket 40A further includes a support member 44, a bottom plate 45, a drain plug 46, a leak detector 47, a baffle plate 48, and a sealing ring 49, and the thin pump further includes a heat dissipation fan 70. The support member 44 is connected to the sleeve 41 and has two connecting portions 441. The two connecting portions 441 are spaced apart and connected to the sleeve 41. Furthermore, the distance between the ends of the two connecting portions 441 farther from the sleeve 41 and the shaft 30 is longer than the distance between the outer surface of the thin motor 20 and the shaft 30, so the two connecting portions 441 allow the thin pump of the present invention to be supported on a single plane. Specifically, when the sizes of the casing 10 and the thin motor 20 are not the same, the support member 44 can support the casing 10 and the thin motor 20 so that the shaft 30 is parallel to the plane. The bottom plate 45 is connected to the sleeve 41 by the support member 44 and is used to install the thin pump on a single plane.
[0014] The drainage plug 46 is removably provided on the bottom side of the bracket 40A. Specifically, in this embodiment, the drainage plug 46 is removably provided on the bottom side of the sleeve 41 and is located between the two connecting portions 441. A user can drain liquid accumulated in the bracket 40A by opening and closing the drainage plug 46. The liquid leakage detection device 47 is provided on the bottom side of the bracket 40A. Specifically, in this embodiment, the liquid leakage detection device 47 is removably provided on the bottom side of the sleeve 41. The liquid leakage detection device 47 is used to detect whether liquid has accumulated in the bracket 40A. When the liquid leakage detection device 47 detects that liquid has accumulated in the bracket 40A, it notifies the user, and the user opens the drainage plug 46 to drain the liquid accumulated in the bracket 40A.
[0015] 13 , the baffle plate 48 is provided within the bracket 40A and is in close contact with the inner wall surface of the bracket 40A, and the shaft 30 passes through the baffle plate 48. In this embodiment, the drain plug 46 is provided between the baffle plate 48 and the casing 10. Therefore, even if liquid seeps into the bracket 40A from the casing 10, the baffle plate 48 blocks the liquid from directly contacting the thin motor 20. The seal ring 49 is provided to seal the gap between the baffle plate 48 and the shaft 30. Therefore, even if the user is unable to immediately open the drain plug 46 to drain the accumulated liquid, the liquid is sealed between the baffle plate 48 and the casing 10 and therefore will not come into contact with and damage the thin motor 20.
[0016] The heat dissipation fan 70 is provided at one end of the thin motor 20 remote from the casing 10 and is used to assist the thin motor 20 in dissipating heat.
[0017] Fluid enters the interior space of the casing 10 through the inlet 11 of the casing 10 from the inlet 60. The thin motor 20 then rotates the impeller 13 via the shaft 30, guiding the fluid to the outlet 12 of the casing 10 and discharging it through the outlet 50. If fluid leaks from a location on the impeller 13 near the thin motor 20, it will flow and accumulate within the bracket 40. The liquid leak detector 47 located on the bottom of the bracket 40 will detect the fluid and notify the user, who then opens the drain plug 46 to drain the fluid. With this configuration, even if the user is unable to immediately open the drain plug 46 to drain the fluid, the thin pump of the present invention allows the liquid to remain between the baffle plate 48 and the casing 10, preventing the liquid from immediately coming into contact with the thin motor 20 and reducing the risk of damage to the thin motor 20.
[0018] The advantage of the present invention is that the thin motor 20 and the impeller 13 share the same shaft 30, eliminating the need for a coupling. Furthermore, by shortening the axial length of the thin motor 20, the axial length of the entire thin pump can be shortened, reducing the volume of the thin pump and the space required for installation. Furthermore, the present invention also provides the liquid leakage detection device 47 and the drain plug 46 on the bracket 40. When the liquid leakage detection device 47 detects liquid in the bracket 40, the user can be notified to perform maintenance. The user can then open the drain plug 46 to drain the liquid accumulated in the bracket 40. This prevents liquid from seeping into the thin pump of the present invention and accumulating in the bracket 40 or seeping into the thin motor 20, which could damage the thin motor 20.
[0019] [Other embodiments] The above-described embodiments do not limit the configuration of the present invention. Therefore, the above-described embodiments may include omissions, substitutions, or additions of components based on the description in this specification and common general technical knowledge, and all of these should be construed as falling within the scope of the present invention. [Explanation of symbols]
[0020] 10 Casing 11 Entrance 12 Exit 13 Impeller 20 Thin motor 30 shaft 40, 40A bracket 41 Sleeve 42 Motor contact area 43 Casing contact part 44 Support member 441 Connection 45 Bottom plate 46 Drain plug 47 Leak detection device 48 Baffle plate 49 Seal ring 50 Exit section 51 Axial outlet wall 52 Radial outlet wall 53 Exit through hole 60 Entrance 61 Axial inlet wall 62 Radial inlet wall 63 Entrance through hole 70 Heat dissipation fan
Claims
1. A casing, a thin motor, and a shaft are included. the casing having an inlet and an outlet and at least one impeller disposed within the casing; the thin motor is connected to the casing, and the axial length of the thin motor is shorter than the axial length of the casing; The shaft is provided in the thin motor, protrudes from the thin motor, and penetrates at least one impeller of the casing, so that the at least one impeller is rotationally driven by the thin motor and the shaft. A thin pump characterized by:
2. The motor has a bracket, which is provided between the thin motor and the casing, and the shaft is drilled through the bracket, so that the casing and the thin motor are positioned on the same axis.
2. The thin pump according to claim 1, wherein:
3. the bracket surrounds the shaft and includes a drain plug and a leak detection device; the drain plug is detachably provided on the bottom side of the bracket, and liquid inside the bracket can be drained by opening and closing the drain plug; The liquid leakage detector is provided on the bottom side of the bracket and is used to detect whether liquid has accumulated inside the bracket.
3. The thin pump according to claim 2, wherein the thin pump is a pump having a diameter of 100 mm or less.
4. the bracket has a sleeve, a motor contact portion, and a casing contact portion; the sleeve is provided between the thin motor and the casing and surrounds the shaft; the motor contact portion is provided around the outer ring surface of the sleeve at one end close to the thin motor, extends outward from the outer ring surface of the sleeve in parallel with the radial direction of the sleeve, and is in close contact with the vicinity of the outer peripheral edge of the side surface of the thin motor facing the casing so as to surround the vicinity of the outer peripheral edge; The casing contact portion is provided around the outer ring surface of one end of the sleeve close to the casing, extends outward from the outer ring surface of the sleeve in parallel with the radial direction of the sleeve, and is in close contact with the vicinity of the outer peripheral edge of the side of the casing facing the thin motor so as to surround the vicinity of the outer peripheral edge.
3. The thin pump according to claim 2, wherein the thin pump is a pump having a diameter of 100 mm or less.
5. the bracket has a sleeve, a motor contact portion, and a casing contact portion; the sleeve is provided between the thin motor and the casing and surrounds the shaft, the drain plug is removably drilled into the sleeve, the motor contact portion is provided around an outer ring surface of one end of the sleeve that is close to the thin motor, extends outward from the outer ring surface of the sleeve in a direction parallel to the radial direction of the sleeve, and is in close contact with the vicinity of the outer peripheral edge of the side surface of the thin motor that faces the casing so as to surround the vicinity of the outer peripheral edge; The casing contact portion is provided around the outer ring surface of one end of the sleeve close to the casing, extends outward from the outer ring surface of the sleeve in parallel with the radial direction of the sleeve, and is in close contact with the vicinity of the outer peripheral edge of the side of the casing facing the thin motor so as to surround the vicinity of the outer peripheral edge.
4. The thin pump according to claim 3, wherein the thin pump is a pump having a diameter of 100 mm or less.
6. the bracket has a support member and a bottom plate; the support member is connected to the sleeve; The bottom plate is connected to the sleeve by the support member and is used to install the thin pump on a single plane.
6. The thin pump according to claim 5, wherein the thin pump is a pump having a diameter of 100 mm or less.
7. the support member has two connecting portions; The two connectors are connected to the sleeve, and the drain plug is disposed between the two connectors.
7. The thin pump according to claim 6, wherein the thin pump is a pump having a diameter of 100 mm or less.
8. The bracket surrounds the shaft and has a baffle plate and a seal ring. the baffle plate is provided within the bracket and is in close contact with an inner wall surface of the bracket, the shaft passes through the baffle plate, The seal ring is installed between the baffle plate and the shaft in a sealed manner.
3. The thin pump according to claim 2, wherein the thin pump is a pump having a diameter of 100 mm or less.
9. having an outlet portion and an inlet portion, The outlet portion is provided in the casing, communicates with an outlet of the casing and the outside of the casing, and further has an axial outlet wall surface, a radial outlet wall surface, and a plurality of outlet through holes, the axial outlet wall surface is parallel to the axial direction of the outlet portion and surrounds the outlet; the radial outlet wall surface is provided around an outer ring surface of the axial outlet wall surface and extends outward from the outer ring surface of the axial outlet wall surface in a radial direction of the outlet portion, the plurality of outlet through holes extend through the radial outlet wall surface along the axial direction of the outlet portion, The inlet portion is provided in the casing, communicates with an inlet of the casing and the outside of the casing, and has an axial inlet wall surface, a radial inlet wall surface, and a plurality of inlet through holes, the axial inlet wall surface is parallel to the axial direction of the inlet portion and surrounds the inlet; the radial inlet wall surface is disposed around an outer ring surface of the axial inlet wall surface and extends outward from the outer ring surface of the axial inlet wall surface in a radial direction of the inlet portion, The plurality of inlet through holes extend through the radial inlet wall surface along the axial direction of the inlet portion. The thin pump according to any one of claims 1 to 8, characterized in that
10. The thin motor has a heat dissipation fan provided at one end away from the casing. The thin pump according to any one of claims 1 to 8, characterized in that