Roof water tank

By adding a booster pump slot and a booster pump to the roof water tank, the problem of slow water outlet in the car water tank is solved, and rapid water outlet is achieved and water use experience is improved.

CN223148275UActive Publication Date: 2025-07-25FOSHAN BERNISON INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202422235049.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-11
Publication Date
2025-07-25
Estimated Expiration
2034-09-11

AI Technical Summary

Technical Problem

The existing on-board water tank is slow to discharge during use, resulting in poor water use experience.

Method used

Add a booster pump slot to the roof water tank, and install a booster pump inside it, which is connected to the water storage chamber through the water inlet pipe and the outlet pipe to achieve pressurized output of water.

Benefits of technology

It improves the water outlet speed of the on-board water tank and improves the water use experience, especially when the water level is low.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a car roof water tank which comprises a water tank body, a water storage cavity and a booster pump groove, and the water storage cavity and the booster pump groove are adjacently arranged in the horizontal direction of the water tank body. The bottom wall of the booster pump groove is provided with a boss, one part of the water storage cavity extends to the position below the boss, the boss is provided with a first water outlet which is vertically formed, and the first water outlet is communicated with the part, extending to the position below the boss, of the water storage cavity; the booster pump is arranged in the booster pump groove, the water inlet end of the booster pump is connected with the first water outlet through a water inlet pipe assembly, the water outlet end of the booster pump is connected with a first connector through a water outlet pipe assembly, and the first connector is located outside the water tank body and used for being connected with a water using device. According to the vehicle-mounted water tank, the booster pump groove is additionally formed in the water tank body, and the booster pump is additionally arranged in the booster pump groove, so that the water outlet speed of the vehicle-mounted water tank can be increased, and the water use experience is improved.
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Description

Technical Field

[0001] The utility model relates to the field of automotive auxiliary equipment, and more specifically, to a roof water tank. Background Art

[0002] Self-driving tour is a form of tourism that is organized and planned, with self-driving cars as the main means of transportation. Due to its inherent characteristics such as liberalization and personalization, flexibility and comfort, and selectivity and seasonality, self-driving tour is becoming increasingly popular.

[0003] Due to the large volume and strong special attributes of RVs, off-road vehicles and family cars are still the main vehicles for self-driving tours. However, during the self-driving tour using off-road vehicles and family cars, etc., the problem of domestic water supply is often faced. Currently, the on-vehicle water tanks of off-road vehicles and family cars, etc. are generally installed on the roof, and the water is filled in advance before camping. Due to the relatively low height of the vehicle, during the water use process, the water outlet is often slow due to insufficient pressure, resulting in a poor water use experience. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a new roof water tank in view of the problem of slow water outlet of the above on-vehicle water tank.

[0005] The technical solution of the utility model to solve the above technical problem is to provide a roof water tank, including:

[0006] A water tank body, including a water storage cavity and a booster pump groove, and the water storage cavity and the booster pump groove are adjacent to each other in the horizontal direction of the water tank body; the bottom wall of the booster pump groove has a boss, a part of the water storage cavity extends below the boss, the boss has a first water outlet vertically arranged thereon, and the first water outlet is communicated with the part of the water storage cavity extending below the boss;

[0007] A booster pump, installed in the booster pump groove, and the water inlet end of the booster pump is connected to the first water outlet through a water inlet pipe assembly, the water outlet end of the booster pump is connected to a first joint through a water outlet pipe assembly, and the first joint is located outside the water tank body and is used to connect a water using device.

[0008] As a further improvement of the utility model, the bottom wall of the water storage cavity and the bottom wall of the booster pump groove are on the same horizontal plane, the first water outlet vertically penetrates from the top surface of the boss to the part of the water storage cavity extending below the boss; the booster pump is fixed on the bottom wall of the booster pump groove and avoids the boss, and the bottom wall of the booster pump groove has several through holes penetrating to the lower surface of the water tank body.

[0009] As a further improvement of the present utility model, the height by which the top surface of the convex platform protrudes from the bottom wall of the booster pump groove is less than 5 cm, and the area occupied by the convex platform is less than one-tenth of the area of the bottom wall of the booster pump groove;

[0010] The opening of the booster pump groove is located on the top surface of the water tank body, and a detachable cover plate is provided at the opening of the booster pump groove.

[0011] As a further improvement of the present utility model, the water tank body is in a flat strip shape and includes a head section, a middle section, and a tail section that are connected in sequence along the length direction. The bottoms of the head section, the middle section, and the tail section are located on the same plane. The top surfaces of the head section and the tail section are higher than the top surface of the middle section, and a rescue board installation position is formed above the middle section;

[0012] The water storage cavity is located in the head section and the middle section, the booster pump groove is located in the tail section, and the convex platform is adjacent to the middle section.

[0013] As a further improvement of the present utility model, a nut injection molded on the water tank body is provided at the first water outlet. The water inlet pipe assembly includes a first connecting pipe made of a rigid material and a first hose connected between the first connecting pipe and the water inlet end of the booster pump. The first connecting pipe includes a threaded section with an external thread, and the first connecting pipe is threadedly connected to the nut through the threaded section.

[0014] As a further improvement of the present utility model, the first connecting pipe includes a drainage section and a joint section. The joint section, the threaded section, and the drainage section are axially connected in sequence. When the first connecting pipe is fixed to the first water outlet, the drainage section is inserted into the water storage cavity below the convex platform, the joint section is located in the booster pump groove, and the first hose is connected to the joint section.

[0015] As a further improvement of the present utility model, the distance between the bottom end of the drainage section and the bottom wall of the water storage cavity is less than 1 cm; or, the bottom end of the drainage section is in contact with the bottom wall of the water storage cavity, and the bottom end of the drainage section has a plurality of notches.

[0016] As a further improvement of the present utility model, a first through hole penetrating to the outside of the water tank body is provided on the groove wall of the booster pump groove facing away from the middle section. The water outlet pipe assembly includes a second connecting pipe, a third connecting pipe, and a second hose. The first end of the second connecting pipe has a first joint head. The second end of the second connecting pipe penetrates into the booster pump groove from the outside of the first through hole. The third connecting pipe is connected to the second end of the second connecting pipe, and the second hose is connected between the third connecting pipe and the water outlet end of the booster pump.

[0017] As a further improvement of the present utility model, on the tank wall of the booster pump groove facing away from the middle section, there is a second through hole penetrating to the outside of the water tank body. A control panel is fixed on the end face outside the second through hole. The control panel is provided with control buttons, a switch assembly and a power supply interface, and the control buttons and the power supply interface are respectively connected to the switch assembly. The switch assembly is electrically connected to the booster pump through a cable passing through the second through hole.

[0018] As a further improvement of the present utility model, the height of the water tank body is less than the width of the water tank body, and the width of the water tank body is less than the length of the water tank body; the water tank body is provided with a plurality of mounting holes, and the plurality of mounting holes respectively penetrate the top surface and the bottom surface of the water tank body and form columnar partitions in the water storage cavity, and the water tank body is locked and fixed to the roof luggage rack through a first locking assembly passing through the mounting holes.

[0019] The present utility model has the following beneficial effects: By adding a booster pump groove on the water tank body and installing a booster pump in the booster pump groove, the water outlet speed of the vehicle-mounted water tank can be increased, and the water use experience can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a partial exploded structural schematic diagram of the roof water tank provided by the embodiment of the present utility model.

[0021] Figure 2 is a schematic diagram of the control structure of the booster pump in the roof water tank provided by the embodiment of the present utility model.

[0022] Figure 3 is a schematic diagram of the structure in which the booster pump in the roof water tank provided by the embodiment of the present utility model is assembled in the booster pump groove.

[0023] Figure 4 is a schematic diagram of the first connecting pipe being assembled to the first water outlet in the roof water tank provided by the embodiment of the present utility model.

[0024] Figure 5 is a schematic diagram of the first connecting pipe in the roof water tank provided by the embodiment of the present utility model.

[0025] Figure 6 is a schematic diagram of the second connecting pipe and the third connecting pipe being assembled to the first through hole in the roof water tank provided by the embodiment of the present utility model.

[0026] Figure 7 is a schematic diagram of the control buttons and the power supply interface in the roof water tank provided by the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] As Figure 1 shown, it is a schematic diagram of a roof water tank provided by an embodiment of the present utility model. The roof water tank can be fixed to the roof rack of an automobile and used as an auxiliary accessory of the automobile. For example, during outdoor travel, water stored in the roof water tank can be used for showering or washing the vehicle, etc. It should be noted that the roof water tank can be manufactured, sold and used independently.

[0029] The roof water tank of this embodiment includes a water tank body 10 and a booster pump 21. The above-mentioned water tank body 10 can be processed by a rotational molding process, and the water tank body 10 includes a water storage cavity, a water inlet and a water outlet. Among them, the water storage cavity is a relatively sealed cavity with a certain volume, which is used to store water. The water inlet and the water outlet are respectively communicated with the water storage cavity, and water is filled into the water storage cavity through the water inlet, and the water for use flows out of the water storage cavity through the water outlet. It can be understood that in order to facilitate filling the water storage cavity with water, the above-mentioned water inlet is located at the top of the water tank body 10, and a detachable sealing cover 60 is provided at the water inlet. When filling water into the water storage cavity, the sealing cover 60 at the water inlet can be opened first, and the water inlet can be sealed with the sealing cover 60 after the water filling is completed.

[0030] Combined with Figure 4 shown, the above-mentioned water tank body 10 further includes a booster pump slot 11, and the booster pump slot 11 is arranged adjacent to the water storage cavity in the horizontal direction of the water tank body 10. The bottom wall of the booster pump slot 11 has a boss 111, a part of the water storage cavity extends below the boss 111, and the water outlet of the water storage cavity includes a first water outlet 112 located on the boss 111. The first water outlet 112 is arranged vertically and is communicated with the part of the water storage cavity extending below the boss 111.

[0031] The booster pump 21 is installed in the booster pump slot 11, and the water inlet end of the booster pump 21 is connected to the first water outlet 112 through a water inlet pipe assembly. The water outlet end of the booster pump 21 is connected to a first joint 22 through a water outlet pipe assembly. The first joint 22 is located outside the water tank body 10 and is used to connect a water using device. That is, when using the roof water tank for water, the booster pump 21 sucks water from the water storage cavity through the first water outlet 112, pressurizes the sucked water, and flows the water into the water using device 30 through the first joint 22, so as to meet the water pressure requirements of the water using device 30, such as showering or car washing, etc. The above-mentioned first joint 22 may specifically include a valve for controlling the on-off of water flow. The shape and structure of the booster pump 21 can both adopt the conventional techniques in the art and will not be elaborated herein.

[0032] For the above-mentioned roof water tank, by adding a booster pump groove 11 to the water tank body 10 and installing a booster pump in the booster pump groove 11, the water in the water storage cavity can be pressurized and output to the water-using device 30, greatly improving the water outlet speed of the roof water tank and enhancing the water-using experience. Moreover, by installing the booster pump 21 in the booster pump groove 11 of the water tank body 10, no complex connection is required during use, greatly facilitating the use of the roof water tank. In addition, by adding a boss 111 to the bottom wall of the booster pump groove 11 and extending the water storage cavity below the boss 111, while ensuring the installation space of the booster pump 21, smooth water outlet can still be achieved even when the water level in the water storage cavity is relatively low.

[0033] Particularly, the above-mentioned water-using device 30 includes a water outlet pipe 31, the water inlet end of which is connected to the first joint 22, and a shower head or a spray gun head 32 is connected to the water outlet end of the water outlet pipe 31. At the same time, the side surface of the water tank body 10 has a plurality of buckles 90, and the water outlet pipe 31 is detachably assembled to the side surface of the water tank body 10 through the buckles 90. Of course, in practical applications, the water outlet pipe 31 can also be fixed to the side surface of the water tank body 10 by other means.

[0034] In an embodiment of the present invention, the bottom wall of the above-mentioned water storage cavity and the bottom wall of the booster pump groove 11 are located on the same horizontal plane, and the first water outlet 112 vertically penetrates from the top surface of the boss 111 to the part where the water storage cavity extends below the boss 111; the booster pump 21 is fixed on the bottom wall of the booster pump groove 11 and avoids the boss 111, and the bottom wall of the booster pump groove 11 has a plurality of through holes penetrating to the lower surface of the water tank body 10. Compared with the water outlet arranged horizontally along the central axis, the above structure facilitates the connection of the water inlet pipeline at the water inlet end of the booster pump 21, and at the same time, the water use when the water level in the water storage cavity is low can also be ensured. At the same time, the through holes in the bottom wall of the booster pump groove 11 can drain the water in the booster pump groove 11 to avoid water accumulation in the booster pump groove 11 in case of leakage, resulting in potential safety hazards.

[0035] Particularly, the height by which the top surface of the above-mentioned boss 111 protrudes from the bottom wall of the booster pump groove 11 is less than 5 cm, and the area occupied by the boss 111 is less than one-tenth of the area of the bottom wall of the booster pump groove 11. This structure can further ensure the installation space of the booster pump 21.

[0036] In addition, the opening of the above-mentioned booster pump groove 11 is located on the top surface of the water tank body 10, and a detachable cover plate 18 is provided at the opening of the booster pump groove 11. This structure facilitates the installation and maintenance of the booster pump 21.

[0037] In an embodiment of the present utility model, the height of the water tank body 10 (i.e., the vertical dimension after being installed on the roof rack) is less than the width of the water tank body 10 (for example, the height of the water tank body 10 can be less than 20 cm), that is, the water tank body 10 is in a flat strip shape, and the water tank body 10 includes a head section, a middle section, and a tail section that are connected in sequence along the length direction. The water storage cavity is located in the head section and the middle section, the booster pump groove 11 is located in the tail section, and the boss 111 is adjacent to the middle section. The bottoms of the head section, the middle section, and the tail section are located on the same plane, and the top surfaces of the head section and the tail section are higher than the top surface of the middle section, and a rescue board installation position is formed above the middle section. In particular, the shapes of the head section and the tail section on the side close to the middle section can be adapted to the shape of the end of the rescue board 50.

[0038] The above structure can not only ensure the volume of the water storage cavity and the installation space of the booster pump 21, but also make the weights of various parts of the entire roof water tank relatively balanced. Moreover, by providing a rescue board installation position for installing the rescue board 50 on the water tank body 10, the space of the roof rack occupied by the rescue board 50 can be saved (usually the rescue board 50 is loaded on the roof rack of the vehicle). In other words, the space of the roof rack occupied by the rescue board 50 is saved by fixedly installing the rescue board 50 at the rescue board fixing position of the water tank body 10; or rather, the rescue board 50 is integrated with the vehicle-mounted water tank. In practical applications, the size of the above rescue board fixing position is greater than or equal to the size of the rescue board 50, so that the rescue board fixing position is applicable to various different models of rescue boards 50.

[0039] In particular, the height of the water tank body 10 is less than the width of the water tank body 10, and the width of the water tank body 10 is less than the length of the water tank body 10. Moreover, there are multiple installation holes on the water tank body 10 (for example, in the middle section of the water tank body 10). The multiple installation holes respectively penetrate through the top surface and the bottom surface of the water tank body and form columnar partitions in the water storage cavity, and the water tank body 10 is locked and fixed to the roof rack through the first locking components passing through the installation holes.

[0040] Since the height of the water tank body 10 is less than the width of the water tank body 10, and the roof water tank is fixed to the roof rack by locking through the first locking components passing through the installation holes, the air resistance during the vehicle's driving will not increase significantly due to the presence of the roof water tank, and at the same time, the fixing stability between the water tank body 10 and the roof rack is also improved. In addition, the existence of the installation holes can also absorb the inertial energy of the water in the water storage cavity when the vehicle jolts and shakes, avoiding a large impact on the side wall of the water tank body 10 by the water.

[0041] In addition, the water outlet of the above-mentioned water tank body 10 further includes a second water outlet communicating with the water storage chamber. The second water outlet is located at the end of the first section facing away from the fixing position of the rescue board, and a second joint for connecting a faucet is provided on the second water outlet. Through the faucet connected to the second joint, water can be taken and used without the need to press water, such as washing hands and washing towels.

[0042] As shown in Figures 3 - 5 In an embodiment of the present invention, a nut injection-molded on the water tank body 10 is provided at the first water outlet 112. Correspondingly, the water inlet pipe assembly includes a first connecting pipe 241 made of a rigid material and a first hose 242 connected between the first connecting pipe 241 and the water inlet end of the booster pump 21. The first connecting pipe 241 includes a threaded section 2412 with an external thread, and the first connecting pipe 241 is threadedly connected to the nut through the threaded section 2412.

[0043] During assembly, the first connecting pipe 241 can be first assembled to the nut at the first water outlet 112, and then the first hose 242 is respectively connected to the first connecting pipe 241 and the water inlet end of the booster pump 21. The connection is not only stable but also the assembly is simple.

[0044] Specifically, in addition to the threaded section 2412, the first connecting pipe 241 further includes a drainage section 2413 and a joint section 2411. The joint section 2411, the threaded section 2412, and the drainage section 2413 are axially connected in sequence. It can be understood that a through water flow channel is provided in the joint section 2411, the threaded section 2412, and the drainage section 2413. When the first connecting pipe 241 is fixed to the first water outlet 112, the drainage section 2413 is inserted into the water storage chamber below the boss 111, the joint section 2411 is located in the booster pump groove 11, and the first hose 242 is connected to the joint section 2411.

[0045] By inserting the drainage section 2413 into the water storage chamber below the boss 111, the water use at a low water level can be further ensured. At the same time, since the joint section 2411 protrudes upward, it facilitates the connection operation of the first hose 242.

[0046] Particularly, the distance between the bottom end of the drainage section 2413 and the bottom wall of the water storage chamber is less than 1 cm; or, the bottom end of the drainage section 2413 is in contact with the bottom wall of the water storage chamber, and the bottom end of the drainage section 2413 has a plurality of notches 2414. Through the above structure, the stored water in the water storage chamber can be fully utilized.

[0047] As shown in Figure 3 、 Figure 6As shown, in an embodiment of the present utility model, a first through hole 113 penetrating to the outside of the water tank body 10 is provided on the groove wall of the booster pump groove 11 facing away from the middle section. Correspondingly, the water outlet pipe assembly includes a second connecting pipe 251, a third connecting pipe 252, and a second hose 253. The first end of the second connecting pipe 251 has a first joint portion, the second end of the second connecting pipe 251 has a second joint portion, and the second joint portion penetrates into the booster pump groove 11 through the outside of the first through hole 113. The third connecting pipe 252 is connected to the second joint portion at the second end of the second connecting pipe 251. The second hose 253 is connected between the third connecting pipe 252 and the water outlet end of the booster pump 21, and the first joint 22 is connected to the first joint portion at the first end of the second connecting pipe 251. The above structure facilitates the assembly of the water outlet end of the booster pump 21. In particular, the second connecting pipe 251 may include an external joint head 2511 and an internal joint head 2512 that are threadedly connected to each other, and the external joint head 2511 and the internal joint head 2512 are respectively located outside the water tank body 10 and inside the booster pump groove 11, and are locked and fixed at the first through hole 113 of the water tank body 10 through threaded connection.

[0048] As Figure 7 shown, in an embodiment of the present utility model, a second through hole penetrating to the outside of the water tank body 10 is provided on the groove wall of the booster pump groove 11 facing away from the middle section. The end face outside the second through hole has a control panel 26, and the control panel 26 can be locked and fixed on the end face of the water tank body 10 by screws, and the control panel 26 has a control button 261 and a power supply interface 262.

[0049] Specifically, a switch assembly 23 is further provided on the control circuit board. As Figure 2 shown, the control button 261 is connected to the switch assembly 23, and one end of the switch assembly 23 is connected to the power supply 40 (for example, the power supply 40 can be an automotive power supply) through the power supply interface 262, and the other end of the switch assembly 23 is connected to the booster pump 21 through a cable passing through the second through hole. Thus, the power supply of the booster pump 21 can be controlled through the control button 261, and the start and stop control of the booster pump 21 (i.e., the water outlet pressurization control) can be realized, and the switch assembly 23 may further include a status indicator light 231. The above switch assembly 23 can adopt the conventional techniques in the art and will not be elaborated here.

[0050] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A roof water tank, characterized in that, include: A water tank body, comprising a water storage chamber and a booster pump groove, wherein the water storage chamber and the booster pump groove are arranged adjacent to each other in the horizontal direction of the water tank body; a bottom wall of the booster pump groove has a boss, a part of the water storage chamber extends below the boss, a first water outlet is vertically arranged on the boss, and the first water outlet is communicated with a part of the water storage chamber extending below the boss; A booster pump is installed in the booster pump groove, and the water inlet end of the booster pump is connected to the first water outlet through a water inlet pipe assembly, and the water outlet end of the booster pump is connected to the first joint via a water outlet pipe assembly. The first joint is located outside the water tank body and is used to connect a water-using device.

2. The roof water tank according to claim 1, wherein The bottom wall of the water storage chamber and the bottom wall of the booster pump groove are located in the same horizontal plane, and the first water outlet vertically penetrates from the top surface of the boss to the part of the water storage chamber extending below the boss; the booster pump is fixed on the bottom wall of the booster pump groove and avoids the boss, and the bottom wall of the booster pump groove has a plurality of through holes penetrating to the lower surface of the water tank body.

3. The roof water tank according to claim 2, characterized in that, The height of the top surface of the boss protruding from the bottom wall of the booster pump groove is less than 5 cm, and the area occupied by the boss is less than one tenth of the area of the bottom wall of the booster pump groove; The opening of the booster pump groove is located on the top surface of the water tank body, and a detachable cover plate is provided at the opening of the booster pump groove.

4. The roof water tank according to claim 1, characterized in that, The water tank body is in a flat strip shape and comprises a first section, a middle section and a tail section which are sequentially connected along the length direction, the bottoms of the first section, the middle section and the tail section are located in the same plane, the top surfaces of the first section and the tail section are higher than the top surface of the middle section, and a rescue board installation position is formed above the middle section; The water storage chamber is located in the first section and the middle section, the booster pump groove is located in the tail section, and the boss is adjacent to the middle section.

5. The roof water tank according to any one of claims 1-4, characterized in that The first water outlet is provided with a nut injection-molded on the water tank body, the water inlet pipe assembly includes a first connecting pipe made of a hard material and a first hose connected between the first connecting pipe and the water inlet end of the boosting pump, the first connecting pipe includes a threaded section with an external thread, and the first connecting pipe is threadedly connected to the nut through the threaded section.

6. The roof water tank according to claim 5, characterized in that, The first connecting pipe includes a drainage section and a joint section, and the joint section, the threaded section and the drainage section are axially connected in sequence. When the first connecting pipe is fixed to the first water outlet, the drainage section is inserted into the water storage cavity under the boss, the joint section is located in the booster pump groove, and the first hose is connected to the joint section.

7. The roof water tank according to claim 6, wherein, The distance between the bottom end of the drainage section and the bottom wall of the water storage chamber is less than 1 cm; or, the bottom end of the drainage section is connected to the bottom wall of the water storage chamber, and the bottom end of the drainage section has a plurality of notches.

8. The roof water tank according to claim 4, characterized in that On the tank wall of the booster pump tank facing away from the middle section, there is a first through hole penetrating to the outside of the water tank body. The water outlet pipe assembly includes a second connecting pipe, a third connecting pipe and a second hose. The first end of the second connecting pipe has a first joint head. The second end of the second connecting pipe penetrates into the booster pump tank from the outside of the first through hole. The third connecting pipe is connected to the second end of the second connecting pipe, and the second hose is connected between the third connecting pipe and the water outlet end of the booster pump.

9. The roof water tank according to claim 4, wherein, On the tank wall of the booster pump tank facing away from the middle section, there is a second through hole penetrating to the outside of the water tank body. A control panel is fixed on the end face outside the second through hole. The control panel has control buttons, a switch assembly and a power supply interface, and the control buttons and the power supply interface are respectively connected to the switch assembly. The switch assembly is electrically connected to the booster pump through a cable passing through the second through hole.

10. The roof water tank according to any one of claims 1-4, characterized in that, The height of the water tank body is less than the width of the water tank body, and the width of the water tank body is less than the length of the water tank body; there are a plurality of mounting holes on the water tank body. The plurality of mounting holes respectively penetrate the top surface and the bottom surface of the water tank body and form a columnar partition in the water storage cavity, and the water tank body is locked and fixed to the roof luggage rack through a first locking assembly passing through the mounting holes.