Heat dissipation structure of speed change device

Abstract

The utility model discloses a heat dissipation structure of a speed change device, which comprises a box body, a motor, heat dissipation fan blades and a speed reduction transmission assembly, and the motor is provided with an air inlet and an air outlet which are communicated with the interior of the motor. The two ends of the box body are provided with a first air inlet and a first air outlet respectively, the first air inlet and the first air outlet are both communicated with the containing space, the motor and the speed reduction transmission assembly are both arranged in the containing space, a motor shaft of the motor is in transmission connection with the speed reduction transmission assembly, and the cooling fan blades are connected to one end of the motor shaft; according to the heat dissipation structure of the speed change device, the motor and the speed reduction transmission assembly are both arranged in the placement space, external air enters the placement space from the first air inlet under the driving of the heat dissipation fan blades to dissipate heat of the interior and exterior of the speed reduction transmission assembly and the motor and is finally discharged out of the box body from the first air outlet, and the heat dissipation structure is simple in structure and good in heat dissipation effect; and stable work of the motor and the heat dissipation assembly is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of speed change devices, and particularly relates to a heat dissipation structure for a speed change device. Background Art

[0002] For the existing speed change device, see Chinese Utility Model Patent No.: 2021218677962, titled: Motor air inlet and outlet structure of a juice extractor, Authorization Publication Date: November 24, 2023. It includes a main body, in which an air inlet channel, an air outlet channel and a motor assembly are arranged. A part of the motor assembly extends into the air inlet channel, and another part extends into the air outlet channel. An air inlet for the motor and an air outlet for the motor are respectively formed on the motor assembly in the air inlet channel and the air outlet channel. The outer wall of the motor assembly between the air inlet for the motor and the air outlet for the motor is in sealing cooperation with the air inlet channel or the air outlet channel. For this juice extractor, by using the sealing cooperation between the outer wall of the motor assembly and the air inlet channel, or the sealing cooperation between the outer wall of the motor assembly and the air outlet channel, it is avoided that the air inlet channel and the air outlet channel communicate with each other and affect each other, and the heat dissipation effect of the motor assembly is significantly improved.

[0003] However, the speed change device with the above structure still has the following deficiencies: (1) Since the fan blades are arranged at the position of the air outlet of the motor, and both the air inlet and the air outlet of the motor are arranged at the bottom of the motor, the air inlet channel, the inside of the motor housing and the air outlet channel form the entire heat dissipation air duct. The entire heat dissipation air duct only surrounds the inside of the motor housing and cannot dissipate heat from the outside of the motor and the speed change transmission components extending out of the motor housing. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the above-mentioned prior art, and to provide a heat dissipation structure for a speed change device that can dissipate heat from the inside and outside of the motor and the speed reduction transmission components.

[0005] The purpose of the utility model is achieved as follows:

[0006] A heat dissipation structure for a speed change device includes a box body, a motor, a heat dissipation fan blade and a speed reduction transmission component. An air inlet and an air outlet communicating with the inside of the motor are arranged on the motor. The feature is that an installation space is arranged in the box body, a first air inlet and a first air outlet are respectively arranged at both ends of the box body, and both the first air inlet and the first air outlet communicate with the installation space. The motor and the speed reduction transmission component are both placed in the installation space, and the motor shaft of the motor is in transmission connection with the speed reduction transmission component. The heat dissipation fan blade is connected to one end of the motor shaft. For this heat dissipation structure of the speed change device, the motor and the speed reduction transmission component are both placed in the installation space. The external air is driven by the heat dissipation fan blade to enter the installation space from the first air inlet to dissipate heat from the inside and outside of the speed reduction transmission component and the motor, and finally is discharged out of the box body from the first air outlet. Its structure is simple and the heat dissipation effect is good, which is beneficial to the stable operation of the motor and the heat dissipation component.

[0007] The object of the present utility model can also be solved by the following technical measures:

[0008] Specifically, further, the first air inlet is located at one end of the box body, the first air outlet is located at the lower part of the other end of the box body, and the central axis of the first air inlet is perpendicular to the central axis of the first air outlet; the first air inlet and the first air outlet are vertically arranged, so that the air entering the placement space from the first air inlet can fully dissipate heat from the motor and the speed reduction transmission assembly and then be discharged from the first air outlet, and its implementation effect is better.

[0009] Specifically, further, the first air inlet is close to the speed reduction transmission assembly, and the first air outlet is close to the air outlet of the motor; so that the air entering the placement space first fully dissipates heat from the speed reduction transmission assembly, and then dissipates heat from the inside and outside of the motor.

[0010] Specifically, further, it further includes a limiting frame with a limiting hole. The limiting frame is clamped at the first air inlet of the box body, and one end of the motor shaft passes through the heat dissipation fan blade and then extends into the limiting hole; the limiting hole on the limiting frame plays a role in limiting the motor shaft, can well limit the swing of the motor shaft, ensure the stable transmission between the motor shaft and the speed reduction transmission assembly, is beneficial to improving the service life of the product and reducing noise.

[0011] Specifically, further, the limiting frame is in a cross shape, the limiting hole is arranged at the center of the limiting frame, and clamping holes are arranged at the four ends of the limiting frame. Four convex buttons are arranged on the box body corresponding to the four clamping holes at the outer periphery of the first air inlet, and the convex buttons are clamped with the clamping holes; so that the connection of the limiting frame on the outer shell is firm, which is beneficial to the stable limiting of the motor shaft by the limiting hole.

[0012] Specifically, further, four concave parts are arranged on the box body corresponding to the four convex buttons at the outer periphery of the first air inlet, and the convex buttons are located on one side of the concave parts. The four ends of the limiting frame respectively extend into the corresponding concave parts; the concave parts can play a role in limiting the installation of the limiting frame and facilitate the installation of the limiting frame on the outer shell.

[0013] Specifically, further, the speed reduction transmission assembly includes a first transmission gear and a planetary speed reduction module. The motor and the first transmission gear are both placed in the placement space, and the first transmission gear is located on one side of the motor shaft of the motor. A worm segment is arranged on the motor shaft, and the worm segment meshes with the first transmission gear. The planetary speed reduction module is placed on the first transmission gear and the planetary speed reduction module is in transmission connection with the first transmission gear; this transmission method has better transmission effect and less noise during operation.

[0014] Specifically further, it further includes a second transmission gear. The outer circumference of the second transmission gear meshes with the worm section of the motor shaft. A second pinion gear is arranged on the upper part of the second transmission gear, and the second pinion gear meshes with the first transmission gear; this is beneficial for the user to further adjust the reduction transmission ratio of the gearbox to meet more usage requirements. Moreover, the upper and lower parts of the second transmission gear cooperate with the first transmission gear and the motor shaft respectively, which also makes the motor shaft and the first transmission part independent of each other and not affect each other.

[0015] Specifically further, the box body includes a base and an upper shell. The upper shell covers the base. A first groove is arranged on the base, and a second groove is arranged on the upper shell. The motor and the reduction transmission assembly are both placed on the first groove, and the first groove and the second groove enclose the placement space; its structure is simple and easy to implement.

[0016] Specifically further, one end of the base is provided with a lower arc-shaped opening, and the upper shell is provided with an upper arc-shaped opening corresponding to the position of the lower arc-shaped opening. The upper arc-shaped opening and the lower arc-shaped opening enclose the first air inlet, and the other end of the base is also provided with the first air outlet; the setting of the first air inlet and the first air outlet is relatively easy and its implementation is relatively simple.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) For this speed change device heat dissipation structure, the motor and the reduction transmission assembly are both placed in the placement space. The external air is driven by the heat dissipation fan blades to enter the placement space from the first air inlet to dissipate heat from the inside and outside of the reduction transmission assembly and the motor, and finally is discharged out of the box body from the first air outlet. Its structure is simple and the heat dissipation effect is good, which is beneficial to the stable operation of the motor and the heat dissipation component.

[0019] (2) The first air inlet and the first air outlet are vertically arranged so that the air entering the placement space from the first air inlet can fully dissipate heat from the motor and the reduction transmission assembly and then be discharged from the first air outlet, and its implementation effect is better.

[0020] (3) The limiting hole on the limiting part plays a limiting role on the motor shaft, which can well limit the swing of the motor shaft, ensure the stable transmission between the motor shaft and the reduction transmission assembly, and is beneficial to improving the service life of the product and reducing noise. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the heat dissipation structure of the speed change device of the present utility model.

[0022] Figure 2 It is a schematic diagram of the speed change device of the present utility model after removing the upper shell.

[0023] Figure 3 It is an exploded view of the heat dissipation structure of the speed change device of the present utility model.

[0024] Figure 4 This is a three-dimensional enlarged view of the limit frame of the present utility model.

[0025] Figure 5 This is a three-dimensional enlarged view of the upper shell of the present utility model.

[0026] Figure 6 This is a sectional view of the heat dissipation structure of the speed change device of the present utility model.

[0027] Figure 7 This is a schematic diagram of the main body housing of the food processor of the present utility model.

[0028] Figure 8 This is an exploded view of the main body housing of the food processor of the present utility model. Detailed implementation manners

[0029] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0030] Embodiment, in combination with Figures 1 to 6 As shown, a heat dissipation structure of a speed change device includes a box body 1, a motor 2, a heat dissipation fan blade 3 and a speed reduction transmission component 4. An air inlet 22 and an air outlet 23 communicating with the inside of the motor 2 are provided on the motor 2. The feature is that an installation space 11 is provided inside the box body 1. A first air inlet 12 and a first air outlet 13 are respectively provided at both ends of the box body 1, and both the first air inlet 12 and the first air outlet 13 communicate with the installation space 11. The motor 2 and the speed reduction transmission component 4 are both placed in the installation space 11, and the motor shaft 21 of the motor 2 is in transmission connection with the speed reduction transmission component 4. The heat dissipation fan blade 3 is connected to one end of the motor shaft 21.

[0031] As a specific solution, the first air inlet 12 is located at one end of the box body 1, the first air outlet 13 is located at the lower part of the other end of the box body 1, and the central axis of the first air inlet 12 is perpendicular to the central axis of the first air outlet 13; more specifically, the first air inlet 12 is integrally circular, and the first air outlet 13 is integrally rectangular.

[0032] In this embodiment, the first air inlet 12 is close to the speed reduction transmission component 4, and the first air outlet 13 is close to the air outlet 23 of the motor 2.

[0033] As a more specific solution, a small fan blade is further provided inside the motor 2, and a reverse extension shaft is provided at the other end of the motor 2. The small fan blade is connected to the reverse extension shaft and is close to the air outlet 23 of the motor; to accelerate the air flow and guide the air inside the motor 2 and improve the heat dissipation effect (the small fan blade and the reverse extension shaft are not shown).

[0034] As a better implementation, it further includes a limit frame 5. A limit hole 51 is opened on the limit frame 5. The limit frame 5 is clamped at the first air inlet 12 of the box body 1. One end of the motor shaft 21 passes through the heat dissipation fan blade 3 and then extends into the limit hole 51.

[0035] In this embodiment, the limit frame 5 is cross-shaped. The limit hole 51 is provided at the center of the limit frame 5. Four clamping holes 52 are provided at the four ends of the limit frame 5. Four convex buttons 14 are provided on the box body 1 corresponding to the positions of the four clamping holes 52 on the outer periphery of the first air inlet 12. The convex buttons 14 are clamped with the clamping holes 52.

[0036] In this embodiment, four concave portions 15 are provided on the box body 1 corresponding to the positions of the four convex buttons 14 on the outer periphery of the first air inlet 12. The convex buttons 14 are located on one side of the concave portions 15. The four ends of the limit frame 5 respectively extend into the corresponding concave portions 15.

[0037] As a more specific solution, the speed reduction transmission assembly 4 includes a first transmission gear 41 and a planetary speed reduction module 42. The motor 2 and the first transmission gear 41 are both placed in the placement space 11. The first transmission gear 41 is located on one side of the motor shaft 21 of the motor 2. A worm segment 211 is provided on the motor shaft 21. The worm segment 211 meshes with the first transmission gear 41. The planetary speed reduction module 42 is placed on the first transmission gear 41 and the planetary speed reduction module 42 is in transmission connection with the first transmission gear 41 (this implementation is not shown).

[0038] As another implementation of the speed reduction transmission assembly 4, it further includes a second transmission gear 43. The outer periphery of the second transmission gear 43 meshes with the worm segment 211 of the motor shaft 21. A second pinion 44 is provided on the upper part of the second transmission gear 43. The second pinion 44 meshes with the first transmission gear 41; specifically, it can be seen Figure 2 .

[0039] As a more specific solution, the box body 1 includes a base 16 and an upper shell 17. The upper shell 17 covers the base 16. A first groove 161 is provided on the base 16. A second groove 171 is provided on the upper shell 17. The motor 2 and the speed reduction transmission assembly 4 are both placed on the first groove 161. The first groove 161 and the second groove 171 enclose the placement space 11.

[0040] In this embodiment, a lower arc-shaped opening 162 is opened at one end of the base 16. An upper arc-shaped opening 172 is opened on the upper shell 17 corresponding to the position of the lower arc-shaped opening 162. The upper arc-shaped opening 172 and the lower arc-shaped opening 162 enclose the first air inlet 12. A first air outlet 13 is further opened at the other end of the base 16.

[0041] Combined Figure 7 and Figure 8As shown in the figure, a food processor including the heat dissipation structure of the above-mentioned speed change device further includes a main machine housing 6. An installation space 61 is provided inside the main machine housing 6. A second air inlet 62 and a second air outlet 63 communicating with the installation space 61 are provided on the main machine housing 6. The second air inlet 62 is close to the first air inlet 12 of the box body 1, and the second air outlet 63 is close to the first air outlet 13 of the box body 1. Further, the main machine housing 6 includes a main machine outer shell 64 and a main machine bottom cover 65. The installation space 61 is formed on the main machine outer shell 64, and the second air inlet 62 and the second air outlet 63 are formed on the main machine bottom cover 65. The main machine bottom cover 65 covers the opening of the installation space 61.

Claims

1. A heat dissipation structure of a speed change device, comprising a housing (1), a motor (2), a heat dissipation fan blade (3) and a reduction transmission assembly (4), wherein the motor (2) is provided with an air inlet (22) and an air outlet (23) which are connected to the interior of the motor (2), wherein: The housing (1) is provided with a placement space (11), and two ends of the housing (1) are respectively provided with a first air inlet (12) and a first air outlet (13), and the first air inlet (12) and the first air outlet (13) are both connected to the placement space (11). The motor (2) and the reduction transmission assembly (4) are both placed in the placement space (11), and the motor shaft (21) of the motor (2) is transmission-connected to the reduction transmission assembly (4), and the heat dissipation fan blade (3) is connected to one end of the motor shaft (21).

2. The heat dissipation structure of the transmission device according to claim 1, characterized in that: The first air inlet (12) is located at one end of the box body (1), the first air outlet (13) is located at the lower part of the other end of the box body (1), and the central axis of the first air inlet (12) is perpendicular to the central axis of the first air outlet (13).

3. The heat dissipation structure of the transmission device according to claim 2, characterized in that: The first air inlet (12) is close to the reduction transmission assembly (4), and the first air outlet (13) is close to the air outlet (23) of the motor (2).

4. The heat dissipation structure of the transmission device according to claim 1, characterized in that: It also includes a limiting frame (5), the limiting frame (5) is provided with a limiting hole (51), the limiting frame (5) is clamped at the first air inlet (12) of the box body (1), and one end of the motor shaft (21) passes through the heat dissipation fan blade (3) and extends into the limiting hole (51).

5. The heat dissipation structure of the transmission device according to claim 4, characterized in that: The limiting frame (5) is cross-shaped, the limiting hole (51) is provided at the center of the limiting frame (5), the four ends of the limiting frame (5) are provided with clamping holes (52), and four protruding buckles (14) are provided on the box body (1) located at the periphery of the first air inlet (12) at positions corresponding to the four clamping holes (52), and the protruding buckles (14) are clamped with the clamping holes (52).

6. The heat dissipation structure of the transmission device according to claim 5, characterized in that: Four inner recesses (15) are provided on the box body (1) located on the outer periphery of the first air inlet (12) at positions corresponding to the four convex buckles (14), and the convex buckles (14) are located on one side of the inner recesses (15), and the four ends of the limiting frame (5) extend into the corresponding inner recesses (15) respectively.

7. The heat dissipation structure of the transmission device according to claim 4, characterized in that: The reduction transmission assembly (4) comprises a first transmission gear (41) and a planetary reduction module (42); the motor (2) and the first transmission gear (41) are both placed in the placement space (11); the first transmission gear (41) is located on one side of a motor shaft (21) of the motor (2); a worm segment (211) is provided on the motor shaft (21); the worm segment (211) is meshed with the first transmission gear (41); the planetary reduction module (42) is placed on the first transmission gear (41) and the planetary reduction module (42) is transmission-connected to the first transmission gear (41).

8. The heat dissipation structure of the transmission device according to claim 7, characterized in that: It also includes a second transmission gear (43), the outer periphery of the second transmission gear (43) meshing with the worm section (211) of the motor shaft (21), a second pinion gear (44) being arranged on the upper portion of the second transmission gear (43), and the second pinion gear (44) meshing with the first transmission gear (41).

9. The heat dissipation structure of a transmission device according to claim 1, characterized in that: The housing (1) comprises a base (16) and an upper shell (17); the upper shell (17) covers the base (16); a first groove (161) is provided on the base (16); a second groove (171) is provided on the upper shell (17); the motor (2) and the reduction transmission assembly (4) are both placed on the first groove (161); the first groove (161) and the second groove (171) enclose the placement space (11).

10. The heat dissipation structure of the transmission device according to claim 9, characterized in that: A lower arc-shaped opening (162) is formed at one end of the base (16), an upper arc-shaped opening (172) is formed on the upper shell (17) at a position corresponding to the lower arc-shaped opening (162), the upper arc-shaped opening (172) and the lower arc-shaped opening (162) enclose the first air inlet (12), and the first air outlet (13) is also formed at the other end of the base (16).

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