Detachable ventilation fan for motor home

Abstract

This utility model relates to a detachable ventilation fan for RVs, including an outer frame base installed on the outer wall of the RV and a fixed inner frame installed on the inner wall of the RV and connected to the outer frame base. A middle shell assembly with a fan is detachably installed on the outer frame base. The outer frame base includes a connecting part extending outward from the RV, and the connecting part has an installation limiting hole. A fixing connector is installed on the inner end face of the connecting part outside the installation limiting hole. The middle shell assembly includes a sleeve part located at the lower end and limited outside the connecting part. The sleeve part has a channel hole corresponding to the installation limiting hole. The sleeve part has a fixing member that passes through the channel hole and the installation limiting hole sequentially from the outside to the inside and is detachably connected to the fixing connector. The middle shell assembly is detachably installed on the outer frame base through the fixing connector and the fixing member, so that the fan on the middle shell assembly can be cleaned or repaired by quickly disassembling the middle shell assembly.

Description

Technical Field

[0001] This utility model relates to the field of RV ventilation equipment technology, and in particular to a detachable ventilation fan for RVs. Background Technology

[0002] Existing RV sunroofs are typically equipped with ventilation fans, allowing for ventilation. Patent application CN202121147477.4 describes a one-button open / close ventilation fan, comprising: an outer frame installed outside the RV and an inner frame installed inside the RV and connected to the outer frame; a fan is positioned between the outer and inner frames; a hinged flap is mounted on one side of the outer frame; a transmission assembly for closing the flap is located between the flap and the outer frame; a rain sensor and a closing switch are mounted on the outer frame; the rain sensor is connected to a control assembly located inside the outer frame, and the control assembly controls the transmission assembly to close the flap and the fan. In this patent, the fan is mounted on the outer frame, which is also located outside the RV. Because the outer and inner frames are connected, replacing or cleaning the fan requires disassembling both the outer and inner frames, making fan cleaning and maintenance difficult and parts replacement cumbersome, significantly increasing the workload for cleaning and maintenance. Utility Model Content

[0003] This invention aims to solve the problems existing in the prior art by providing a detachable ventilation fan for RVs. The fan is mounted on the middle shell assembly, and the middle shell assembly is detachably connected to the outer frame base, thereby facilitating the quick disassembly and cleaning of the fan after installation.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: This detachable ventilation fan for RVs includes an outer frame base installed on the outer wall of the RV and a fixed inner frame installed on the inner wall of the RV and connected to the outer frame base. A middle shell assembly with a fan is detachably installed on the outer frame base. The outer frame base includes a connecting part extending outward from the RV. The connecting part has an installation limiting hole. A fixing connector is installed on the inner end face of the connecting part outside the installation limiting hole. The middle shell assembly includes a sleeve part located at the lower end and limited to the outside of the connecting part. The sleeve part has a channel hole corresponding to the installation limiting hole. The sleeve part has a fixing connector that passes through the channel hole and the installation limiting hole from the outside to the inside and is detachably connected to the fixing connector. The fan is installed on the middle shell assembly, and the middle shell assembly is detachably installed on the outer frame base through the fixing connector and the fixing connector. Thus, when the outer frame base and the fixed inner frame are fixed relative to the RV, the fan on the middle shell assembly can be quickly disassembled for cleaning or maintenance.

[0005] Preferably, the connecting part is provided with a limiting groove corresponding to the position of the mounting limiting hole. The fixed connecting part includes a spring nut installed in the limiting groove and clamped inside and outside the connecting part. The nut end of the spring nut is located inside the connecting part. The limiting groove makes it easy to position the spring nut before installation, so that the spring nut can be accurately positioned at the installation position corresponding to the mounting limiting hole, thereby facilitating the installation and connection of the middle shell assembly and the outer frame base.

[0006] Preferably, the middle shell assembly further includes a middle shell, an exhaust fan support portion disposed at the center of the middle shell, a motor mounted on the exhaust fan support portion, and fan blades disposed on the output end of the motor, with a sleeve portion disposed on the middle shell and extending downward.

[0007] Preferably, the fixed inner frame includes a first contact portion that fits and is fixed to the inner wall of the RV, a first channel hole opened in the center of the first contact portion, and a channel tube disposed around the outer periphery of the first channel hole that passes through the RV and the outer frame base for connection. The fixed inner frame is installed in close contact with the inner wall of the RV through the first contact portion, thereby ensuring the sealing stability of the fixed inner frame.

[0008] Preferably, the outer frame base also includes a second contact portion that fits and is fixed to the outer wall of the RV, a second channel hole opened in the center of the second contact portion for the channel pipe to pass through and connect, and a connecting pipe that extends from the second contact portion toward the fixed inner frame and is sleeved on the outside of the channel pipe. The second contact portion is tightly fitted to the outer wall of the RV to ensure the sealing stability of the outer frame base. At the same time, the connecting pipe sleeved on the outside of the channel pipe allows the fixed inner frame and the outer frame base to be connected through the connecting pipe and the channel pipe, thereby facilitating the installation of the middle shell assembly.

[0009] Preferably, the middle shell includes a boss portion connected to the sleeve portion and used for limiting contact with the connecting portion. The boss portion facilitates limiting the connecting portion. When the sleeve portion on the middle shell assembly is fitted onto the outside of the connecting portion, the boss portion limits the connecting portion, thereby limiting the position of the middle shell assembly, so that the mounting limiting hole corresponds to the channel hole, thereby facilitating the installation of the fastener.

[0010] Preferably, a sealing cover assembly is rotatably connected to the middle shell assembly, which can be closed onto the middle shell assembly to seal the middle shell assembly.

[0011] Preferably, the middle shell further includes a sealing part that is connected to the boss portion and extends upward for contacting the sealing cover assembly. The sealing cover assembly includes a cover rotatably connected to the boss portion at one end, a geared motor fixedly mounted on the exhaust fan support portion, a rotating shaft disposed on the drive end of the geared motor, a support rod disposed on the rotating shaft at one end and driven to rotate by the rotating shaft, and a bent member disposed inside the cover and movably connected to the other end of the support rod. The geared motor drives the rotating shaft to rotate, thereby driving the support rod and the cover to rotate and thus covering the middle shell assembly to achieve sealing of the exhaust fan.

[0012] Preferably, the protrusion is also equipped with a rain sensor that can transmit signals to the geared motor. The rain sensor detects rainwater and then works with the geared motor to realize the function of automatically closing the window in rainy weather.

[0013] The beneficial effects of this utility model are: the fan is set on the middle shell assembly, and the middle shell assembly is sleeved on the outside of the connecting part of the outer frame base through the sleeve part. The middle shell assembly is detachably installed on the outer frame base through the fixing connector and the fixing part. Thus, when the outer frame base and the fixed inner frame are fixed relative to the RV, the fan on the middle shell assembly can be quickly disassembled to clean or repair it. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the present invention; Figure 3 This is a structural schematic diagram of the outer frame base; Figure 4 This is a schematic diagram of the middle shell assembly; Figure 5 This is a schematic diagram of the sealing cover assembly.

[0015] Explanation of reference numerals in the attached drawings: 1. Outer frame base; 1-1. Connecting part; 1-2. Second contact part; 1-3. Second channel hole; 1-4. Connecting pipe; 2. Fixed inner frame; 2-1. First contact part; 2-3. First channel hole; 2-2. Channel pipe; 3. Middle shell assembly; 3-2. Middle shell; 3-3. Exhaust fan support part; 3-4. Motor; 3-5. Fan blade; 3-6. Boss part; 4. Mounting limit hole; 5. Fixed connector; 3-1. Sleeve part; 6. Channel hole; 7. Fixing part; 8. Limiting groove; 9. Sealing cover assembly; 9-1. Cover; 9-2. Gear motor; 9-3. Rotating shaft; 9-4. Support rod; 9-5. Bending part; 10. Sealing part; 11. Rain sensor. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] Referring to the accompanying drawings: This embodiment discloses a detachable ventilation fan for RVs, including an outer frame base 1 installed on the outer wall of the RV and a fixed inner frame 2 installed on the inner wall of the RV and connected to the outer frame base 1. The outer frame base 1 and the fixed inner frame 2 are interconnected and pass through the RV's ventilation opening. Further, as shown in the attached drawings... Figure 1 and 2 As shown, the fixed inner frame 2 includes a first contact portion 2-1 that is fitted and fixed to the inner wall of the RV, a first channel hole 2-3 opened at the center of the first contact portion 2-1, and a channel tube 2-2 disposed on the first contact portion 2-1 and passing through the RV to connect with the outer frame base 1. The first contact portion 2-1 can be detachably installed on the inner wall of the RV by screws and fits tightly against the inner wall of the RV. The corresponding channel tube 2-2 extends into the ventilation port opened in the RV to facilitate connection with the outer frame base 1. Correspondingly, the outer frame base 1 also includes a second contact portion 1-2 that is fitted and fixed to the outer wall of the RV, and a channel tube 2-2 opened at the center of the second contact portion 1-2 for connection. The second channel hole 1-3 and the connecting pipe 1-4, which extends from the second contact portion 1-2 toward the fixed inner frame 2 and is sleeved on the outside of the channel pipe 2-2, are connected to the channel pipe 2-2 through the connecting pipe 1-4, thereby achieving a through connection between the outer frame base 1 and the fixed inner frame 2 to the RV's ventilation port. To facilitate quick disassembly and installation of the fan, in this embodiment, a middle shell assembly 3 with a fan is detachably installed on the outer frame base 1, achieving quick disassembly and installation of various parts of the ventilation fan through a modular design. Furthermore, a sealing cover assembly 9 is rotatably connected to the middle shell assembly 3, which can be closed onto the middle shell assembly 3 to seal it. Specifically, as shown... Figure 2 and 3 As shown, the outer frame base 1 includes a connecting part 1-1 extending outward from the RV. The connecting part 1-1 has an installation limiting hole 4. A fixing connector 5 is installed on the inner end face of the connecting part 1-1 outside the installation limiting hole 4. The middle shell assembly 3 includes a sleeve part 3-1 located at the lower end and limited to the outside of the connecting part 1-1. The sleeve part 3-1 has a channel hole 6 corresponding to the installation limiting hole 4. The sleeve part 3-1 has a fixing member 7 that passes through the channel hole 6 and the installation limiting hole 4 from the outside to the inside and is detachably connected to the fixing connector 5. During installation, the sleeve part 3-1 on the middle shell assembly 3 is sleeved on the outside of the connecting part 1-1, so that the channel hole 6 corresponds to the installation limiting hole 4. The fixing member 7 passes through the channel hole 6 and the installation limiting hole 4 and is connected to the fixing connector 5, thereby detachably installing the middle shell assembly 3 onto the outer frame base 1. Furthermore, such as Figure 2 and 3 As shown, in order to facilitate the installation and positioning of the fixing connector 5, a limiting groove 8 is provided on the connecting part 1-1, which corresponds to the position of the installation limiting hole 4. The fixing connector 5 includes a spring nut installed in the limiting groove 8 and clamped inside and outside the connecting part 1-1. The nut end of the spring nut is located inside the connecting part 1-1. The corresponding fixing part 7 is a fixing screw that corresponds to the spring nut. Thus, during installation, the fixing screw passes through the channel hole 6 and the installation limiting hole 4 in sequence and is threadedly connected to the nut end of the spring nut.

[0018] Furthermore, such as Figure 4 As shown, to further facilitate the disassembly and installation of the exhaust fan, the middle shell assembly 3 in this embodiment also includes a middle shell 3-2, an exhaust fan support 3-3 located at the center of the middle shell 3-2, a motor 3-4 mounted on the exhaust fan support 3-3, and a fan blade 3-5 located on the output end of the motor 3-4. The middle shell 3-2 has an exhaust channel connecting to the outer frame base 1 at its inner center. The exhaust fan support 3-3 is a cross-shaped structure supported on the exhaust channel. The corresponding motor 3-4 is mounted at the center of the cross-shaped exhaust fan support 3-3, and the output end of the corresponding motor 3-4 passes downward through the exhaust fan support 3-3 and connects to the fan blade 3-5. Correspondingly, the sleeve 3-1 in this embodiment is located on the middle shell 3-2 and extends downward. Further, as... Figure 4As shown, the middle shell 3-2 in this embodiment includes a boss 3-6 connected to the sleeve 3-1 and used for limiting contact with the connecting part 1-1. In this embodiment, the boss 3-6 is relatively horizontally arranged, and the sleeve 3-1 is arranged outside the boss 3-6 and extends vertically downward. Furthermore, in order to ensure the sealing effect of the sealing cover assembly 9, the middle shell 3-2 in this embodiment also includes a sealing part 10 connected to the boss 3-6 and extending upward for contact with the sealing cover assembly 9. The sealing cover assembly 9 includes a cover 9-1 rotatably connected to the boss 3-6 at one end, a reduction motor 9-2 fixedly installed on the exhaust fan support 3-3, a rotating shaft 9-3 arranged on the drive end of the reduction motor 9-2, a support rod 9-4 arranged on the rotating shaft 9-3 at one end and driven by the rotating shaft 9-3, and a support rod 9-4 arranged inside the cover 9-1 and connected to the support rod 9-4. -4 The other end is movably connected to the bent part 9-5. Specifically, the bent part 9-5 is provided with a sliding groove, and the corresponding support rod 9-4 is provided with a sliding shaft that can rotate and slide in the sliding groove. Furthermore, a sealing rubber that can deform can be provided on the sealing part 10. When it is necessary to close the ventilation fan, the rotating shaft 9-3 can be driven to rotate by the geared motor 9-2, which in turn drives the support rod 9-4 to rotate. The support rod 9-4 then drives the cover 9-1 to close to the sealing part 10. Furthermore, in order to realize the automatic closing of the sealing cover assembly 9 on rainy days, in this embodiment, a rain sensor 11 that can transmit signals with the geared motor 9-2 is also provided on the boss part 3-6. When the rain sensor 11 senses rain, the cover 9-1 is controlled by the geared motor 9-2 to achieve sealing.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A detachable ventilation fan for RVs, comprising an outer frame base (1) mounted on the outer wall of the RV and a fixed inner frame (2) mounted on the inner wall of the RV and connected to the outer frame base (1), characterized in that: The outer frame base (1) is detachably mounted with a middle shell assembly (3) with a fan. The outer frame base (1) includes a connecting part (1-1) extending outward to the outside of the RV. The connecting part (1-1) has an installation limiting hole (4). A fixing connector (5) is installed on the inner end face of the connecting part (1-1) outside the installation limiting hole (4). The middle shell assembly (3) includes a sleeve part (3-1) located at the lower end and limited to the outside of the connecting part (1-1). The sleeve part (3-1) has a channel hole (6) corresponding to the installation limiting hole (4). The sleeve part (3-1) has a fixing member (7) that passes through the channel hole (6) and the installation limiting hole (4) from the outside to the inside and is detachably connected to the fixing connector (5).

2. The detachable ventilation fan for RVs according to claim 1, characterized in that: The connecting part (1-1) is provided with a limiting groove (8) corresponding to the position of the mounting limiting hole (4). The fixed connecting member (5) includes a spring nut installed in the limiting groove (8) and clamped inside and outside the connecting part (1-1). The nut end of the spring nut is located inside the connecting part (1-1).

3. A detachable ventilation fan for RVs according to claim 1 or 2, characterized in that: The middle shell assembly (3) also includes a middle shell (3-2), an exhaust fan support (3-3) located at the center of the middle shell (3-2), a motor (3-4) mounted on the exhaust fan support (3-3), and a fan blade (3-5) located on the output end of the motor (3-4). The sleeve (3-1) is located on the middle shell (3-2) and extends downward.

4. A detachable ventilation fan for RVs according to claim 1, characterized in that: The fixed inner frame (2) includes a first contact part (2-1) that is attached to and fixed on the inner wall of the RV, a first channel hole (2-3) opened in the center of the first contact part (2-1), and a channel tube (2-2) that is set on the outer periphery of the first channel hole (2-3) and passes through the RV and the outer frame base (1) for connection.

5. A detachable ventilation fan for RVs according to claim 4, characterized in that: The outer frame base (1) also includes a second contact part (1-2) that is attached to and fixed on the outer wall of the RV, a second channel hole (1-3) opened in the center of the second contact part (1-2) for the channel tube (2-2) to pass through and connect, and a connecting tube (1-4) that is provided on the second contact part (1-2) and extends to the side of the fixed inner frame (2) and is sleeved on the outside of the channel tube (2-2).

6. A detachable ventilation fan for RVs according to claim 3, characterized in that: A sealing cover assembly (9) is rotatably connected to the middle shell assembly (3) and can be covered on the middle shell assembly (3) to seal the middle shell assembly (3).

7. A detachable ventilation fan for RVs according to claim 6, characterized in that: The middle shell (3-2) includes a boss (3-6) connected to the sleeve (3-1) and used for limiting contact with the connecting part (1-1).

8. A detachable ventilation fan for RVs according to claim 7, characterized in that: The middle shell (3-2) also includes a sealing part (10) that is connected to the boss (3-6) and extends upward for contacting the sealing cover assembly (9). The sealing cover assembly (9) includes a cover (9-1) rotatably connected to the boss (3-6) at one end, a geared motor (9-2) fixedly installed on the exhaust fan support (3-3), a rotating shaft (9-3) set on the drive end of the geared motor (9-2), a support rod (9-4) set on the rotating shaft (9-3) at one end and driven by the rotating shaft (9-3) to rotate, and a bent part (9-5) set inside the cover (9-1) and movably connected to the other end of the support rod (9-4).

9. A detachable ventilation fan for RVs according to claim 8, characterized in that: The boss (3-6) is also provided with a rain sensor (11) that can transmit signals with the geared motor (9-2).

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