Exhaust fan for motor home and motor home

Abstract

The utility model relates to the technical field of touring car supplies, in particular to an exhaust fan for a touring car and the touring car, which comprises a support, an exhaust fan main body arranged on the support, a turning cover arranged on one side of the support and hinged with the support, and a turning cover opening and closing mechanism used for driving the turning cover to turn over to open and close; a hinge seat is arranged on the turning cover, and a guide groove is formed in the hinge seat; the flip opening and closing mechanism comprises a swing arm, a transmission assembly connected with the swing arm and a motor assembly connected with the transmission assembly, one end of the swing arm is hinged to the support, and the other end of the swing arm is slidably arranged in the guide groove. A hinged shaft of the swing arm and the support is parallel to a hinged shaft of the turning cover and the support; the motor assembly drives the transmission assembly to drive one end of the swing arm to rotate along a hinged shaft of the swing arm and the support, and the other end slides along the guide groove so as to drive the flip cover to be opened and closed. Opening and closing of the turning cover are achieved through driving of the motor assembly, manual screwing operation is not needed in the using process, using is convenient, and the customer experience feeling is good.

Description

Technical Field

[0001] This utility model relates to the field of RV supplies technology, specifically an exhaust fan for RVs and an RV. Background Technology

[0002] As people's living standards improve, they have higher and higher requirements for the intelligence of RVs. At present, the exhaust fan cover on RVs is mainly opened by a knob, which requires manual operation every time it is used, which is inconvenient and results in a poor customer experience. Utility Model Content

[0003] The purpose of this utility model is to provide an exhaust fan for RVs and an RV, which solves the problem that the existing exhaust fan on RVs requires manual operation to open by turning a knob, resulting in a poor customer experience.

[0004] To solve the above problems, the present invention provides the following technical solution:

[0005] A motorhome exhaust fan includes a support, an exhaust fan body mounted on the support, a flip cover mounted on one side of the support and hinged to the support, and a flip cover opening and closing mechanism for driving the flip cover to open and close. The flip cover has a hinge seat with a guide groove. The flip cover opening and closing mechanism includes a swing arm, a transmission assembly connected to the swing arm, and a motor assembly connected to the transmission assembly. One end of the swing arm is hinged to the support, and the other end is slidably disposed in the guide groove. The hinge axis between the swing arm and the support is parallel to the hinge axis between the flip cover and the support. The motor assembly drives the transmission assembly to rotate one end of the swing arm along the hinge axis between the swing arm and the support, and slide the other end along the guide groove, thereby driving the flip cover to open and close.

[0006] As described above, in a motorhome exhaust fan, the motor assembly includes a motor and a gear reduction assembly. The gear reduction assembly has an input shaft at its input end and an output shaft at its output end. The input shaft is connected to the motor, and the output shaft is connected to the transmission assembly.

[0007] As described above, the exhaust fan for a motorhome includes a gear reduction assembly comprising a small gear coaxially and fixedly connected to the input shaft, a large gear meshing with the small gear, a small gear coaxially and fixedly connected to the large gear, a large gear meshing with the small gear, a small gear coaxially and fixedly connected to the large gear, a large gear coaxially and fixedly connected to the small gear, a small gear coaxially and fixedly connected to the large gear, a large gear meshing with the small gear, a small gear coaxially and fixedly connected to the large gear, and a large gear meshing with the small gear and coaxially and fixedly connected to the output shaft.

[0008] As described above, in a motorhome exhaust fan, the transmission assembly includes a worm gear and a transmission gear that engages with the worm gear. The worm gear is connected to the output shaft, and the transmission gear is connected to the swing arm.

[0009] As described above, in a motorhome exhaust fan, the output end of the gear reduction assembly is provided with an output bushing, the output bushing has a plurality of bushing grooves that pass through both ends of the output bushing and are arranged in a circumferential array along the output bushing, the output shaft has a plurality of output protrusions that cooperate with the bushing grooves, and the worm has a plurality of worm protrusions that cooperate with the bushing grooves.

[0010] As described above, the RV exhaust fan includes a flip-top opening and closing mechanism comprising two parallel swing arms and a synchronous rotating shaft connecting the two swing arms and parallel to the hinge axis of the support and the flip-top. The flip-top is provided with hinge seats corresponding to the two swing arms, and the two hinge seats are provided with guide grooves. One end of each swing arm is fixedly connected to the synchronous rotating shaft, and the other end is slidably disposed in the guide groove. The synchronous rotating shaft is coaxial with and fixedly connected to the transmission gear.

[0011] As described above, in a motorhome exhaust fan, the motor assembly includes a motor housing, and the motor and the gear reduction assembly are disposed within the motor housing; the transmission assembly includes a transmission housing, and the worm gear and the transmission gear are disposed within the transmission housing.

[0012] As described above, in a motorhome exhaust fan, one end of the swing arm is provided with a slider perpendicular to the swing arm, and the slider is slidably disposed in the guide groove.

[0013] As described above, a sealing ring is provided between the bracket and the flip cover in an exhaust fan for a motorhome.

[0014] A motorhome includes a vehicle body on which an exhaust fan for motorhomes as described above is provided.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This utility model provides an exhaust fan for RVs and an RV. The motor assembly drives the transmission assembly to rotate one end of the swing arm along the hinge axis between the swing arm and the support, while the other end slides along the guide groove, thereby causing the flip cover to flip and open and close. It does not require manual operation during use, making it convenient to use and providing a good customer experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the RV exhaust fan according to an embodiment of the present invention. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of the RV exhaust fan according to an embodiment of the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the flip-top opening and closing mechanism in the RV exhaust fan according to an embodiment of the present utility model.

[0021] Figure 4 This is a partial exploded view of the flip-top opening and closing mechanism in the RV exhaust fan according to an embodiment of the present utility model.

[0022] Figure 5 This is a schematic diagram of the gear reduction assembly in the RV exhaust fan according to an embodiment of the present invention.

[0023] The corresponding numbers for the attached figures are as follows:

[0024] 1. Support; 11. Fixed bracket; 2. Exhaust fan body; 3. Flip cover; 31. Hinge seat; 32. Guide groove; 4. Flip cover opening and closing mechanism; 41. Swing arm; 411. Slider; 42. Synchronous rotating shaft; 43. Transmission assembly; 431. Worm; 4311 Worm protrusion; 432. Transmission gear; 433. Transmission housing; 44. Motor assembly; 441. Motor; 442. Gear reduction assembly; 4421. First end pinion; 4422. First reduction gear 4423. Large gear; 4424. First reduction pinion; 4425. Second reduction large gear; 4426. Third reduction large gear; 4427. Third reduction pinion; 4428. End large gear; 443. Input shaft; 444. Output shaft; 4441. Output protrusion; 445. Output bushing; 4451. Bushing groove; 446. Motor housing; 5. Sealing ring; 6. Control panel; 7. Exhaust fan drive motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see the appendix Figure 1 To be continued Figure 5 This embodiment provides an exhaust fan for a motorhome, including a support 1, an exhaust fan body 2 disposed on the support 1, a flip cover 3 disposed on one side of the support 1 and hinged to the support 1, and a flip cover opening and closing mechanism 4 for driving the flip cover 3 to flip open and close; the flip cover 3 is provided with a hinge seat 31, and the hinge seat 31 is provided with a guide groove 32; the flip cover opening and closing mechanism 4 includes a swing arm 41, a transmission assembly 43 connected to the swing arm 41, and a motor assembly 44 connected to the transmission assembly 43. One end of the swing arm 41 is hinged to the support 1, and the other end is slidably disposed in the guide groove 32; the hinge axis of the swing arm 41 and the support 1 is parallel to the hinge axis of the flip cover 3 and the support 1; the motor assembly 44 drives the transmission assembly 43 to drive one end of the swing arm 41 to rotate along the hinge axis of the swing arm 41 and the support 1, and the other end to slide along the guide groove 32, so as to drive the flip cover 3 to flip open and close. This embodiment of a motorhome exhaust fan uses a motor assembly 44 to drive a transmission assembly 44 to rotate one end of a swing arm 41 along the hinge axis between the swing arm 41 and the support 1, while the other end slides along a guide groove 32, thereby causing the flip cover 3 to flip and open and close. It does not require manual operation during use, making it convenient to use and providing a good customer experience.

[0027] Furthermore, the motor assembly 44 includes a motor 441 and a gear reduction assembly 442. The input end of the gear reduction assembly 442 is provided with an input shaft 443, and the output end of the gear reduction assembly 442 is provided with an output shaft 444. The input shaft 443 is connected to the motor 441, and the output shaft 444 is connected to the transmission assembly 43. In this embodiment, the high-speed rotation of the motor 441 is converted into low-speed, high-torque output by the gear reduction assembly 442, which can maintain stable drive. Then, it is transmitted to the transmission assembly 43 through the output shaft 444, thereby driving the transmission assembly 43 to drive one end of the swing arm 41 to rotate along the hinge axis between the swing arm 41 and the support 1, and the other end to slide along the guide groove 32, realizing the flip opening and closing of the cover 3.

[0028] Further, the gear reduction assembly 442 includes a first end pinion 4421 coaxially and fixedly connected to the input shaft 443, a first reduction gear 4422 meshing with the first end pinion 4421, a first reduction pinion 4423 coaxially and fixedly connected to the first reduction gear 4422, a second reduction gear 4424 meshing with the first reduction pinion 4423, a second reduction pinion 4425 coaxially and fixedly connected to the second reduction gear 4424, a third reduction gear 4426 meshing with the second reduction pinion 4425, a third reduction pinion 4427 coaxially and fixedly connected to the third reduction gear 4426, and an end gear 4428 meshing with the third reduction pinion 4427 and coaxially and fixedly connected to the output shaft 444. Through the combined action of the gears in the gear reduction assembly 442, the high-speed rotation of the motor 441 can be effectively converted into low-speed, high-torque output. In this embodiment, the gear reduction assembly 442 has a compact structure and occupies little space. Moreover, compared with other reduction methods, the meshing relationship of the gears used in this embodiment makes energy transmission more stable, reduces vibration and impact, and ensures stability and durability during long-term operation.

[0029] Furthermore, the motor assembly 44 includes a motor housing 446, within which the motor 441 and the gear reduction assembly 442 are housed. The motor housing 446 serves two purposes: firstly, it secures the motor 441 and the gear reduction assembly 442; secondly, it protects the motor 441 and the gear reduction assembly 442, preventing external interference with their mechanical movement, thus ensuring driving performance and extending their service life.

[0030] Furthermore, the transmission assembly 43 includes a worm gear 431 and a transmission gear 432 that meshes with the worm gear 431. The worm gear 431 is connected to the output shaft 444, and the transmission gear 432 is connected to the swing arm 41. The meshing structure of the worm gear 431 and the transmission gear 432 is simple, provides stable transmission, and has good load-bearing capacity. Moreover, the helical shape of the worm gear 431 allows the contact point to gradually move during rotation, providing a high-precision transmission effect while helping to reduce vibration and noise.

[0031] Furthermore, the output end of the gear reduction assembly 442 is provided with an output bushing 445. The output bushing 445 has several bushing grooves 4451 arranged circumferentially around both ends of the output bushing 445. The output shaft 444 has several output protrusions 4441 that mate with the bushing grooves 4451. The worm gear 431 has several worm protrusions 4311 that mate with the bushing grooves 4451. By simultaneously engaging the bushing grooves 4451 with the output protrusions 4441 and the worm protrusions 4311, the output bushing 445 locks the output shaft 444 and the worm gear 431 circumferentially, ensuring that the output shaft 444 and the worm gear 431 can rotate synchronously.

[0032] Furthermore, the transmission assembly 43 includes a transmission housing 433, within which the worm gear 431 and the transmission gear 432 are housed. The transmission housing 433 serves two purposes: firstly, it secures the worm gear 431 and the transmission gear 432; secondly, it protects them from external interference with their mechanical movement, ensuring effective transmission and extending their service life. The transmission housing 433 also features a limiting groove that engages with both ends of the worm gear 431 to restrict its axial movement, thus ensuring optimal transmission between the worm gear 431 and the transmission gear 432.

[0033] Furthermore, the flip-top opening and closing mechanism 4 includes two parallel swing arms 41 and a synchronous rotating shaft 42 connecting the two swing arms 41 and parallel to the hinge axis of the support 1 and the flip-top 3. The flip-top 3 is provided with hinge seats 31 corresponding to the two swing arms 41, and guide grooves 32 are provided on the two hinge seats 31. One end of each swing arm 41 is fixedly connected to the synchronous rotating shaft 42, and the other end is slidably disposed in the guide groove 32. The synchronous rotating shaft 42 is coaxial with and fixedly connected to the transmission gear 432. The synchronous rotating shaft 42 has a polygonal cross-section, and the rotation axis of the transmission gear 432 has a through hole with the same cross-sectional shape as the synchronous rotating shaft 42. The synchronous rotating shaft 42 cooperates with the through hole to be fixedly connected to the transmission gear 432. In this embodiment, one end of each swing arm 41 is provided with a slider 411 perpendicular to the swing arm 41. The slider 411 is slidably disposed in the guide groove 32. This structure is simple and easy to install.

[0034] This embodiment provides an exhaust fan for a motorhome. When in use, the motor 441 is started. The high-speed rotation of the motor 441 is transmitted to the gear reduction assembly 442 via the input shaft 443. After being reduced in speed by the gear reduction assembly 442, the output is transmitted through the output shaft 444. Through the transmission of the worm gear 431 and the transmission gear 432, the synchronous shaft 42 rotates, thereby causing one end of the two swing arms 41 to rotate along the hinge axis between the swing arm 41 and the support 1. The other ends of the two swing arms 41 slide along the corresponding guide grooves 32, realizing the opening and closing of the flip cover 3. No manual operation is required during use, making it convenient and providing a good customer experience.

[0035] In addition, a sealing ring 5 is provided between the support 1 and the flip cover 3 in this embodiment. Specifically, a sealing ring 5 is provided on the side of the support 1 where the flip cover 3 is located, so that the flip cover 3 and the support 1 are sealed when closed. A control panel 6 is provided on the other side of the support 1. The motor assembly 44 is electrically connected to the control panel 6. When the easy-to-open and close RV exhaust fan of this embodiment is installed on the RV, the support 1 is connected to the vehicle body, the control panel 6 is located inside the vehicle body, and the flip cover 3 is located outside the vehicle body. This embodiment also includes an exhaust fan drive motor 7. A fixed bracket 11 is provided on the support 1, and the exhaust fan body 2 and the exhaust fan drive motor 7 are mounted on the fixed bracket 11.

[0036] This embodiment is applied to a motorhome, which includes a vehicle body and is equipped with an exhaust fan for motorhomes as described above. In this embodiment, the exhaust fan for motorhomes can be driven by a motor assembly 44 to drive a transmission assembly 44 to rotate one end of a swing arm 41 along the hinge axis between the swing arm 41 and the support 1, while the other end slides along a guide groove 32, thereby causing the flip cover 3 to flip and open and close. No manual operation is required during use, making it convenient and providing a good customer experience.

[0037] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An exhaust fan for a motorhome, characterized in that, The device includes a support (1), an exhaust fan body (2) mounted on the support (1), a flip cover (3) mounted on one side of the support (1) and hinged to the support (1), and a flip cover opening and closing mechanism (4) for driving the flip cover (3) to flip open and close; the flip cover (3) is provided with a hinge seat (31), and the hinge seat (31) is provided with a guide groove (32); the flip cover opening and closing mechanism (4) includes a swing arm (41), a transmission assembly (43) connected to the swing arm (41), and an electric motor connected to the transmission assembly (43). The motor assembly (44) has a swing arm (41) with one end hinged to the support (1) and the other end slidably disposed in the guide groove (32); the hinge axis of the swing arm (41) and the support (1) is parallel to the hinge axis of the flip cover (3) and the support (1); the motor assembly (44) drives the transmission assembly (43) to drive one end of the swing arm (41) to rotate along the hinge axis of the swing arm (41) and the support (1), and the other end to slide along the guide groove (32) so as to drive the flip cover (3) to flip open and close.

2. The exhaust fan for a motorhome according to claim 1, characterized in that, The motor assembly (44) includes a motor (441) and a gear reduction assembly (442). The input end of the gear reduction assembly (442) is provided with an input shaft (443), and the output end of the gear reduction assembly (442) is provided with an output shaft (444). The input shaft (443) is connected to the motor (441), and the output shaft (444) is connected to the transmission assembly (43).

3. The exhaust fan for a motorhome according to claim 2, characterized in that, The gear reduction assembly (442) includes a first end pinion (4421) coaxial with and fixedly connected to the input shaft (443), a first reduction gear (4422) meshing with the first end pinion (4421), a first reduction pinion (4423) coaxial with and fixedly connected to the first reduction gear (4422), a second reduction gear (4424) meshing with the first reduction pinion (4423), a second reduction pinion (4425) coaxial with and fixedly connected to the second reduction gear (4424), a third reduction gear (4426) meshing with the second reduction pinion (4425), a third reduction pinion (4427) coaxial with and fixedly connected to the third reduction gear (4426), and an end gear (4428) meshing with the third reduction pinion (4427) and coaxial with and fixedly connected to the output shaft (444).

4. The exhaust fan for a motorhome according to claim 2, characterized in that, The transmission assembly (43) includes a worm (431) and a transmission gear (432) that cooperates with the worm (431). The worm (431) is connected to the output shaft (444), and the transmission gear (432) is connected to the swing arm (41).

5. An exhaust fan for a motorhome according to claim 4, characterized in that, The output end of the gear reduction assembly (442) is provided with an output bushing (445). The output bushing (445) is provided with a plurality of bushing grooves (4451) that pass through both ends of the output bushing (445) and are arranged in a circumferential array along the output bushing (445). The output shaft (444) is provided with a plurality of output protrusions (4441) that cooperate with the bushing grooves (4451). The worm (431) is provided with a plurality of worm protrusions (4311) that cooperate with the bushing grooves (4451).

6. The exhaust fan for a motorhome according to claim 4, characterized in that, The flip cover opening and closing mechanism (4) includes two parallel swing arms (41) and a synchronous rotating shaft (42) connecting the two swing arms (41) and parallel to the hinge axis of the support (1) and the flip cover (3). The flip cover (3) is provided with a hinge seat (31) corresponding to the two swing arms (41) one by one. The two hinge seats (31) are provided with guide grooves (32) respectively. One end of the swing arm (41) is fixedly connected to the synchronous rotating shaft (42), and the other end is slidably disposed in the guide groove (32). The synchronous rotating shaft (42) is coaxial with and fixedly connected to the transmission gear (432).

7. The exhaust fan for a motorhome according to claim 4, characterized in that, The motor assembly (44) includes a motor housing (446), and the motor (441) and the gear reduction assembly (442) are disposed inside the motor housing (446); the transmission assembly (43) includes a transmission housing (433), and the worm (431) and the transmission gear (432) are disposed inside the transmission housing (433).

8. The exhaust fan for a motorhome according to claim 1, characterized in that, One end of the swing arm (41) is provided with a slider (411) perpendicular to the swing arm (41), and the slider (411) is slidably disposed in the guide groove (32).

9. An exhaust fan for a motorhome according to claim 1, characterized in that, A sealing ring (5) is provided between the support (1) and the flip cover (3).

10. A motorhome, comprising a vehicle body, characterized in that, The vehicle body is equipped with an exhaust fan for a motorhome as described in any one of claims 1-9.

Images