A vacuum oil injection apparatus

By designing a vacuum oil filling device, the problems of time-consuming and laborious brake fluid replacement and air residue in existing technologies have been solved, enabling efficient single-person operation and improved braking performance.

CN224430198UActive Publication Date: 2026-06-30WENZHOU DONGQI AUTO PARTS MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU DONGQI AUTO PARTS MFG CO LTD
Filing Date
2025-09-04
Publication Date
2026-06-30

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    Figure CN224430198U_ABST
Patent Text Reader

Abstract

This utility model discloses a vacuum oil injection device, including a base plate. From left to right, a first partition, a second partition, a third partition, a fourth partition, and a fifth partition are arranged on the upper surface of the base plate. A vacuum pump is disposed between the first and second partitions. A first storage battery is disposed between the second and third partitions. An oil storage tank is disposed between the third and fourth partitions. A waste oil tank is disposed between the fourth and fifth partitions. A positioning frame is fixedly disposed along the edge of the base plate. A positioning rod is fixedly disposed at a partial position on the upper end of the positioning frame. An oil pump is disposed in a pump positioning box at the upper right end of the positioning frame. A second storage battery, a first oil inlet, and a first oil outlet are disposed at the upper end of the waste oil tank. A second control switch is disposed at the upper end of the second storage battery. An oil injection pump is disposed in the oil storage tank. The first control switch controls the opening and closing of the oil injection pump. The above technical solution has a reasonable structural design, can be operated by a single person, saves time and labor, has high work efficiency, and is highly practical.
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Description

Technical Field

[0001] This utility model relates to the field of brake system oil injection technology, specifically to a vacuum oil injection device. Background Technology

[0002] With the continuous development of science and technology, China's automobile industry has made significant progress, with notable advancements in enterprise production scale, automobile production and sales volume, product variety, technological level, and market concentration. Maintenance is indispensable in life and work; it's the only way to keep the tools around us running smoothly, improve their performance and precision, save costs, and ultimately enhance our quality of life and economic efficiency. Similarly, automobile maintenance is an effective means of extending the lifespan of vehicles and ensuring safe driving. When maintaining a car's braking system, brake fluid replacement is a common maintenance item. Current methods often involve workers loosening the bleed screw and continuously pressing the brake pedal, causing the brake fluid to flow out of the drain hole. This method requires multiple people, is time-consuming and labor-intensive, has extremely low efficiency, and is uneconomical, failing to meet current needs.

[0003] In addition, a vacuum needs to be evacuated when changing brake fluid to ensure that air in the braking system is completely removed to avoid affecting braking performance. If a vacuum is not evacuated, residual air may remain inside the braking system, which can reduce braking efficiency, especially at high temperatures or during frequent braking. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vacuum oil injection device with reasonable structural design, which can be operated by a single person, saves time and labor, has high work efficiency and good practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum oil injection device, comprising a base plate, wherein a first partition, a second partition, a third partition, a fourth partition, and a fifth partition are arranged sequentially from left to right on the upper surface of the base plate; a vacuum pump is arranged between the first partition and the second partition; a first storage battery is arranged between the second partition and the third partition; an oil storage tank is arranged between the third partition and the fourth partition; a waste oil tank is arranged between the fourth partition and the fifth partition; and a first control switch is arranged on the upper end of the first storage battery, the first control switch being connected to the first storage battery via a copper sheet or a wire.

[0006] A positioning frame is fixedly provided on the edge of the base plate, and a positioning rod is fixedly provided at a partial position on the upper end of the positioning frame. An oil collection box is provided above the oil storage tank on the positioning rod. A pump positioning box is fixedly provided on the upper right end of the positioning frame. An oil pump is provided inside the pump positioning box. A first oil delivery pipe and a first connecting wire are provided on the upper end of the oil pump. A second battery, a first oil inlet, and a first oil outlet are provided on the upper end of the waste oil tank. A second control switch is provided on the upper end of the second battery. The oil pump and the second control switch are connected through the first connecting wire, and the oil delivery port of the first oil delivery pipe is inserted into the first oil inlet. The second control switch and the second battery are connected through a copper sheet or a wire. The oil pump is controlled to start and stop through the second control switch.

[0007] The oil storage tank is equipped with an oil injection pump, and the oil injection pump is equipped with a second oil delivery pipe and a second connecting wire. The oil outlet of the second oil delivery pipe is equipped with an oil delivery head. The outlet end of the second oil delivery pipe is hung on a positioning rod, and the oil delivery head is inserted into the oil collection box.

[0008] The second connecting wire is connected to the first control switch away from the oil injection pump end, and the oil injection pump is controlled to start and stop through the first control switch.

[0009] The present invention is further configured such that: the vacuum pump is provided with a third connecting wire and an air extraction pipe, the vacuum pump is connected to the first control switch through the third connecting wire, and the outlet end of the air extraction pipe is attached to the positioning rod.

[0010] The present invention is further configured such that: a handrail is fixedly provided at the left end of the base plate; the left end of the positioning rod is fixed to the handrail by welding or by bolting; the upper end of the oil collection box is fixed to the positioning rod by welding or by bolting; and the left end of the pump positioning box is fixed to the upper right end of the positioning frame by welding or by bolting.

[0011] The present invention is further configured such that: an oil tank inlet is provided at the upper left end of the oil tank, a dust cover is provided at the upper end of the oil tank inlet, a vertical through hole is provided on the dust cover, a silicone dust pad is fixedly provided on the inner wall of the vertical through hole, a through hole is provided in the middle of the silicone dust pad, the second oil delivery pipe passes through the through hole, and the outer surface of the second oil delivery pipe is partially sealed to the inner wall of the through hole by the silicone dust pad.

[0012] The present invention is further configured such that: the dust cover is made of iron; the upper end face of the oil tank is provided with several magnet mounting slots aligned with the dust cover; a positioning magnet is fixedly installed in each magnet mounting slot; the positioning magnet is flush with the upper end face of the oil tank; a sealing ring mounting slot is provided at the edge of the oil tank inlet on the upper end face of the oil tank; a silicone sealing ring is installed in the sealing ring mounting slot; the dust cover is adsorbed onto the positioning magnet; and a seal is formed between a portion of the upper end face of the oil tank and the lower end face of the dust cover by the silicone sealing ring.

[0013] The present invention is further configured such that: a first handle is welded to the upper end of the waste oil tank, a second handle is welded to the upper end of the oil storage tank, and four casters are provided at the bottom of the base plate, and the casters are distributed in a rectangular shape.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model has a reasonable structural design. When changing brake fluid in a car, firstly, the suction pump is placed into the car's existing brake fluid tank. Then, the second control switch is used to start the suction pump, which draws out the brake fluid from the existing tank and sends it to the waste fluid tank via the first oil delivery pipe. After the brake fluid in the existing tank is drained, the suction pump is turned off. Next, the filling pump is placed into the reservoir. The outlet of the oil delivery head on the second oil delivery pipe is inserted into the existing brake fluid tank. Then, the first control button on the first control switch is used to start the filling pump, which draws out the new brake fluid from the reservoir and delivers it to the existing tank via the second oil delivery pipe. Once the brake fluid level in the reservoir reaches the set amount, the filling pump is turned off. The servo head is removed, and the outlet end of the second servo hose is attached to the positioning rod. The servo head is inserted into the collection box to effectively prevent brake fluid dripping from the servo head from contaminating the ground. Next, the suction end of the evacuation hose is inserted into the brake fluid reservoir. The vacuum pump is started using the second control button on the first control switch. The existing brake fluid reservoir cap is then used to cover most of the reservoir opening to facilitate the removal of air from the reservoir. After the air is removed, the evacuation hose is removed, the reservoir cap is replaced, and the outlet end of the evacuation hose is attached to the positioning rod for future use. This system can be operated by a single person, saving time and effort, and is highly efficient and practical.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a partial structural diagram of an embodiment of the present utility model. Figure 1 ;

[0018] Figure 3 This is a partial structural diagram of an embodiment of the present utility model. Figure 2

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of part I in the middle. Detailed Implementation

[0020] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] See Figures 1 to 4 This utility model discloses a vacuum oil injection device, including a base plate 1. From left to right, a first partition 11, a second partition 12, a third partition 13, a fourth partition 14, and a fifth partition 15 are arranged on the upper surface of the base plate 1. A vacuum pump 3 is arranged between the first partition 11 and the second partition 12. A first storage battery 4 is arranged between the second partition 12 and the third partition 13. An oil storage tank 5 is arranged between the third partition 13 and the fourth partition 14. A waste oil tank 6 is arranged between the fourth partition 14 and the fifth partition 15. A first control switch 7 is arranged on the upper end of the first storage battery 4. The first control switch 7 is connected to the first storage battery 4 through a copper sheet or a wire.

[0022] A positioning frame 16 is fixedly provided on the edge of the base plate 1. A positioning rod 8 is fixedly provided at a partial position on the upper end of the positioning frame 16. An oil collection box 9 is provided above the oil storage tank on the positioning rod 8. A pump positioning box 10 is fixedly provided at the upper right end of the positioning frame 16. An oil pump 17 is provided inside the pump positioning box 10. A first oil delivery pipe 171 and a first connecting wire 172 are provided at the upper end of the oil pump 17. A second storage battery 18, a first oil inlet 61 and a first oil outlet 62 are provided at the upper end of the waste oil tank 6. A second control switch 19 is provided at the upper end of the second storage battery 18. The oil pump 17 and the second control switch 19 are connected through the first connecting wire. The oil delivery port of the first oil delivery pipe 171 is inserted into the first oil inlet 61. The second control switch 19 and the second storage battery 18 are connected through a copper sheet or wire. The oil pump 17 is opened and closed by the second control switch 19.

[0023] The oil storage tank 5 is equipped with an oil injection pump 20. The oil injection pump 20 is equipped with a second oil delivery pipe 201 and a second connecting wire 202. The oil outlet of the second oil delivery pipe 201 is equipped with an oil delivery head 203. The outlet end of the second oil delivery pipe 201 is hung on the positioning rod 8, and the oil delivery head 203 is inserted into the oil collection box 9.

[0024] The second connecting wire 202 is connected to the first control switch 7 away from the oil pump end, and the oil pump 20 is controlled to start and stop by the first control switch 7.

[0025] Preferably, the lower ends of the first partition 11, the second partition 12, the third partition 13, the fourth partition 14, and the fifth partition 15 are all integrally formed with the upper surface of the base plate 1; the first control switch 7 is electrically connected to the first battery 4 via a wire, and the first control switch 7 is a push-button switch; the lower end of the positioning frame 16 is fixed to the base plate 1 by screws or by welding; the second control switch 19 is electrically connected to the second battery 18 via a wire. A sealing nut is threaded onto the outer end of the first oil outlet 62.

[0026] To make the structural design of this utility model more reasonable, as a preferred embodiment, the vacuum pump 3 is provided with a third connecting wire 31 and an air extraction pipe 32. The vacuum pump 3 is connected to the first control switch 7 through the third connecting wire 31, and the outlet end of the air extraction pipe 32 is hung on the positioning rod 8.

[0027] Preferably, the vacuum pump 3 is controlled by a first control switch 7. The first control switch 7 is a two-way, double-control push-button switch, which includes a first control button and a second control button. Pressing the first control button controls the oil pump 20 to start and stop, and pressing the second control button controls the vacuum pump 3 to start and stop. The oil delivery head 203 is made of stainless steel, and the inlet end of the oil delivery head 203 is fixed to the outlet of the second oil delivery pipe 201 by plugging or threading.

[0028] A handrail 21 is fixedly installed on the left end of the base plate 1. The left end of the positioning rod 8 is fixed to the handrail 21 by welding or by bolts. The upper end of the oil collection box 9 is fixed to the positioning rod 8 by welding or by bolts. The left end of the pump positioning box 10 is fixed to the upper right end of the positioning frame 16 by welding or by bolts.

[0029] Preferably, a support rod is provided between the positioning rod 8 and the positioning frame 16. The upper end of the support rod is fixed to the positioning rod 8 by welding or by screws, and the lower end of the support rod is fixed to the positioning frame 16 by welding or by screws.

[0030] The oil tank 5 is provided with an oil tank inlet 51 at the upper left end. A dust cover 52 is provided at the upper end of the oil tank inlet 51. A vertical through hole 521 is provided on the dust cover 52. A silicone dust pad 53 is fixedly provided on the inner wall of the vertical through hole 521. A pipe through hole 531 is provided vertically in the middle of the silicone dust pad 53. The second oil pipe 201 passes through the pipe through hole 531, and the outer surface of the second oil pipe 201 is partially sealed to the inner wall of the pipe through hole 531 by the silicone dust pad 53.

[0031] Preferably, the side of the silicone dustproof pad 53 is bonded and fixed to the inner wall of the vertical through hole 521.

[0032] The dust cover 52 is made of iron. The upper surface of the oil tank 5 is provided with several magnet mounting slots aligned with the dust cover. A positioning magnet 22 is fixedly installed in each magnet mounting slot. The positioning magnet 22 is flush with the upper surface of the oil tank 5. A sealing ring mounting slot is provided on the upper surface of the oil tank 5 at the edge of the oil tank inlet 51. A silicone sealing ring 23 is installed in the sealing ring mounting slot. The dust cover 52 is adsorbed onto the positioning magnet 22. A seal is formed between the upper surface of the oil tank 5 and a certain part of the lower surface of the dust cover 52 through the silicone sealing ring 23.

[0033] The waste oil tank 6 is welded with a first handle 63 at the upper end, the oil storage tank 5 is welded with a second handle 53 at the upper end, and the bottom of the base plate 1 is provided with four casters 2, which are arranged in a rectangular shape.

[0034] Preferably, the upper end of each caster wheel 2 is connected and fixed to the bottom of the base plate 1 by a matching mounting bracket and bolts.

[0035] In practical application, when changing brake fluid in a car, firstly, the squeegee pump 17 is placed into the car's existing brake fluid tank. Then, the second control switch 19 is used to start the squeegee pump 17, drawing brake fluid from the existing tank and sending it to the waste fluid tank 6 via the first delivery pipe 171. Once the brake fluid in the existing tank is depleted, the squeegee pump 17 is turned off. Next, the filling pump 20 is placed into the reservoir 5, and the outlet of the delivery head 203 on the second delivery pipe 201 is inserted into the existing brake fluid tank. Then, the first control button on the first control switch 7 is used to start the filling pump 20, drawing new brake fluid from the reservoir 5 and delivering it to the existing tank via the second delivery pipe 201. After reaching the set volume, turn off the oil pump 20, remove the oil delivery head 203, and hang the outlet end of the second oil delivery pipe 201 on the positioning rod 8. Insert the oil delivery head 203 into the oil collection box 9 to effectively prevent brake fluid dripping from the oil delivery head 203 from contaminating the ground. Then, insert the suction end of the suction pipe 32 into the brake fluid tank, and start the vacuum pump 3 by controlling the second control button on the first control switch 7. Cover most of the brake fluid tank opening with the existing tank cap to facilitate the extraction of air from the brake fluid tank. After the air in the brake fluid tank is extracted, pull out the suction pipe 32, close the tank cap, and hang the outlet pipe of the suction pipe 32 on the positioning rod 8 for future use. The structure is reasonably designed, can be operated by a single person, saves time and effort, has high work efficiency, and is very practical.

[0036] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers in the art based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A vacuum oil filling apparatus comprising a base plate (1), characterised in that: The upper surface of the base plate (1) is provided with a first partition (11), a second partition (12), a third partition (13), a fourth partition (14) and a fifth partition (15) from left to right. A vacuum pump (3) is provided between the first partition (11) and the second partition (12). A first storage battery (4) is provided between the second partition (12) and the third partition (13). An oil storage tank (5) is provided between the third partition (13) and the fourth partition (14). A waste oil tank (6) is provided between the fourth partition (14) and the fifth partition (15). A first control switch (7) is provided at the upper end of the first storage battery (4). The first control switch (7) is connected to the first storage battery (4) through a copper sheet or a wire. A positioning frame (16) is fixedly provided on the edge of the base plate (1), and a positioning rod (8) is fixedly provided at a partial position on the upper end of the positioning frame (16). An oil collection box (9) is provided on the positioning rod (8) above the oil storage tank. A pump positioning box (10) is fixedly provided on the upper right end of the positioning frame (16). An oil pump (17) is provided inside the pump positioning box (10), and a first oil delivery pipe (171) and a first connecting wire (172) are provided on the upper end of the oil pump (17). The upper end of the waste oil tank (6) The system is equipped with a second battery (18), a first oil inlet (61) and a first oil outlet (62). A second control switch (19) is provided on the upper end of the second battery (18). The oil pump (17) is connected to the second control switch (19) through a first connecting wire, and the oil outlet of the first oil delivery pipe (171) is inserted into the first oil inlet (61). The second control switch (19) is connected to the second battery (18) through a copper sheet or wire. The oil pump (17) is turned on and off by the second control switch (19). The oil storage tank (5) is equipped with an oil injection pump (20), and the oil injection pump (20) is equipped with a second oil delivery pipe (201) and a second connecting wire (202). The oil outlet of the second oil delivery pipe (201) is equipped with an oil delivery head (203). The outlet end of the second oil delivery pipe (201) is hung on the positioning rod (8), and the oil delivery head (203) is inserted into the oil collection box (9). The second connecting wire (202) is connected to the first control switch (7) away from the oil pump end, and the oil pump (20) is opened and closed by the first control switch (7).

2. A vacuum oil filling apparatus according to claim 1, characterized in that: The vacuum pump (3) is provided with a third connecting wire (31) and a suction pipe (32). The vacuum pump (3) is connected to the first control switch (7) through the third connecting wire (31), and the outlet end of the suction pipe (32) is attached to the positioning rod (8).

3. A vacuum oil filling apparatus according to claim 2, characterised in that: A handrail (21) is fixedly installed on the left end of the base plate (1). The left end of the positioning rod (8) is fixed to the handrail (21) by welding or by bolt. The upper end of the oil collection box (9) is fixed to the positioning rod (8) by welding or by bolt. The left end of the pump positioning box (10) is fixed to the upper right end of the positioning frame (16) by welding or by bolt.

4. A vacuum oil filling apparatus according to claim 1 or 3, characterized in that: The oil tank (5) is provided with an oil tank inlet (51) at the upper left end. A dust cover (52) is provided at the upper end of the oil tank inlet (51). A vertical through hole (521) is provided on the dust cover (52). A silicone dust pad (53) is fixedly provided on the inner wall of the vertical through hole (521). A through hole (531) is provided vertically in the middle of the silicone dust pad (53). The second oil pipe (201) passes through the through hole (531), and the outer surface of the second oil pipe (201) is partially sealed to the inner wall of the through hole (531) by the silicone dust pad (53).

5. A vacuum oil filling apparatus according to claim 4, characterised in that: The dust cover (52) is made of iron. The upper end of the oil tank (5) is provided with several magnet mounting slots facing the dust cover. A positioning magnet (22) is fixedly installed in each magnet mounting slot. The positioning magnet (22) is flush with the upper end of the oil tank (5). A sealing ring mounting slot is provided at the edge of the oil tank inlet (51) on the upper end of the oil tank (5). A silicone sealing ring (23) is installed in the sealing ring mounting slot. The dust cover (52) is adsorbed on the positioning magnet (22). The upper end of the oil tank (5) and the lower end of the dust cover (52) are partially sealed by the silicone sealing ring (23).

6. A vacuum oil filling apparatus according to claim 5, wherein: The waste oil tank (6) is welded with a first handle (63) at the top, the oil storage tank (5) is welded with a second handle (53) at the top, and the bottom of the base plate (1) is provided with four casters (2), which are arranged in a rectangular shape.