Automatic transmission oil changer

Abstract

The present invention discloses an automatic transmission oil changer. The automatic transmission oil changer comprises: a bottom cover; a first pressure sensor, the first pressure sensor is arranged on the bottom cover; a second pressure sensor, the second pressure sensor is arranged on the bottom cover; a first pipe fitting, one end of the first pipe fitting and the bottom cover form a first cavity; a second pipe fitting, the first pipe fitting is nested in the second pipe fitting, the first pipe fitting, the bottom cover and the second pipe fitting form a second cavity; the first pressure sensor is connected to the first cavity, and the second pressure sensor is connected to the second cavity. Beneficial effect: the first pressure sensor and the second pressure sensor can reduce the influence of external vibration, external airflow and bubbles in the liquid, and can reduce the error of liquid measurement. The present invention relates to automobile repair and maintenance tools.

Description

Technical Field

[0001] The invention relates to an automobile repair and maintenance tool, in particular to an automatic transmission oil changer. Background Art

[0002] For daily car maintenance, not only the engine needs regular maintenance, but the gearbox is no exception. The gearbox is an important part of the powertrain. The maintenance of the gearbox has been neglected. The gearbox, like the engine, also needs regular maintenance. If the gearbox is not maintained regularly, it will also cause damage to the gearbox. The gearbox lubricant has a certain shelf life, and the high temperature wear will occur when the gearbox is working, which will gradually cause the oil in the gearbox to lose its lubrication and cooling function.

[0003] In the prior art, an equal volume oil changer for replacing automatic transmission oil of a car usually uses a weighing sensor or a flow meter to measure the oil.

[0004] The technical defect of the oil changing solution using a weighing sensor in the prior art is that the weighing sensor is easily affected by external vibrations, resulting in a large measurement error.

[0005] The technical defect of the oil changing solution using a flow meter in the prior art is that the flow meter is easily affected by the air in the pipeline, resulting in a large metering error. Summary of the invention

[0006] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide an automatic transmission oil changer with accurate metering.

[0007] The technical solutions adopted to solve the above technical problems are:

[0008] Automatic transmission oil changer, including:

[0009] back cover;

[0010] A first pressure sensor, the first pressure sensor is arranged on the bottom cover;

[0011] A second pressure sensor, the second pressure sensor is arranged on the bottom cover;

[0012] A first pipe, one end of the first pipe and the bottom cover form a first cavity;

[0013] The second pipe is nested in the first pipe, and the first pipe, the bottom cover and the second pipe form a second cavity; the first pressure sensor is connected to the first cavity, and the second pressure sensor is connected to the second cavity.

[0014] The above automatic transmission oil changer has at least the following beneficial effects:

[0015] The first pressure sensor can measure the liquid level in the first cavity, and the volume of the liquid in the first cavity can be converted by the liquid level in the first cavity and the cross-sectional area of ​​the first cavity; the second pressure sensor can measure the liquid level in the second cavity, and the volume of the liquid in the second cavity can be converted by the liquid level in the second cavity and the cross-sectional area of ​​the second cavity; the first pressure sensor and the second pressure sensor can reduce the influence of external vibration, external airflow and bubbles in the liquid, and can reduce the error of liquid measurement; the second cavity surrounds the first cavity, the first cavity can be used to accommodate hot oil extracted from the gearbox, and the second cavity can be used to accommodate cold oil to be injected into the gearbox, the second cavity can block the heat of the hot oil in the first cavity from diffusing outward, and prevent the hot oil from causing burns to personnel, and the heat transfer between the first cavity and the second cavity can heat the cold oil, which can reduce the temperature difference between the cold oil and the gearbox, which is conducive to preventing the gearbox from cooling suddenly.

[0016] In a possible implementation of the present invention, a level gauge is provided on the automatic transmission oil changer. The level gauge can correct the spatial position of the first pipe and the second pipe, which is beneficial to reduce the inclination of the first pipe and the second pipe, so that the liquid level of the first pipe and the second pipe can more truly reflect the volume of the liquid in the first cavity and the second cavity.

[0017] In a possible implementation of the present invention, the automatic transmission oil changer is further provided with a plurality of casters, which can support the automatic transmission oil changer and enable the automatic transmission oil changer to be moved by the casters. The casters make the automatic transmission oil changer easy to move and are also conducive to adjusting the level by selecting the position of the automatic transmission oil changer, so that the calibration process of the level gauge is easy to operate.

[0018] In a possible implementation of the present invention, the first pressure sensor and the second pressure sensor are piezoelectric liquid level sensors. The piezoelectric liquid level sensor can accurately measure the liquid level, which is conducive to accurately measuring the volume of the liquid in the first cavity and the second cavity.

[0019] In a possible implementation of the present invention, the automatic transmission oil changer further includes a plurality of heat-insulating joints, a heat-insulating joint is provided between the first pressure sensor and the first cavity, a heat-insulating joint is also provided between the second pressure sensor and the second cavity, the first pressure sensor is connected to the first cavity through the heat-insulating joint, the second pressure sensor is connected to the second cavity through the heat-insulating joint, and the heat-insulating joint is made of plastic. The heat-insulating joint is made of plastic, has good heat-insulating properties, can slow down the heat transfer between the bottom cover and the first pressure sensor and the second pressure sensor, and is conducive to reducing the measurement error of the first pressure sensor and the second pressure sensor.

[0020] In a possible implementation of the present invention, the material of the thermal insulation joint is polytetrafluoroethylene. The material of the thermal insulation joint is polytetrafluoroethylene, which has good thermal insulation performance.

[0021] In a possible implementation of the present invention, the automatic transmission oil changer further includes an adapter, an adapter is provided between the first pressure sensor and the heat insulation joint, an adapter is also provided between the second pressure sensor and the heat insulation joint, the adapter makes the first pressure sensor and the heat insulation joint form an angle with each other, and the adapter makes the second pressure sensor and the heat insulation joint form an angle with each other. The adapter enables the first pressure sensor and the second pressure sensor to be arranged parallel to the bottom cover, which is beneficial to improving space utilization and making the automatic transmission oil changer more compact.

[0022] In a possible implementation of the present invention, the automatic transmission oil changer further includes a plurality of drain joints, the adapter is a three-way joint, one end of the adapter is connected to the insulation joint, one end of the adapter is connected to the first pressure sensor or the second pressure sensor, and one end of the adapter is connected to the drain joint. The drain joint is connected to the adapter and can be used to drain the liquid in the first cavity and the second cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the arrangement of the bottom cover, the first pipe member and the second pipe member according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the arrangement of a back cover, a first pressure sensor, and a second pressure sensor according to an embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of an automatic transmission oil changer in the prior art of an embodiment of the present invention;

[0028] Reference numerals:

[0029] Bottom cover 1, first pipe fitting 2, first cavity 3, second pipe fitting 4, second cavity 5, first pressure sensor 6, second pressure sensor 7, level 8, casters 9, insulation joint 10, adapter 11, drain joint 12, oil tank 13, tray 14, weighing sensor 15. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0034] Reference Figures 1 to 3 , automatic transmission oil changer, comprising:

[0035] Back cover 1;

[0036] A first pressure sensor 6, the first pressure sensor 6 is arranged on the bottom cover 1;

[0037] A second pressure sensor 7, the second pressure sensor 7 is arranged on the bottom cover 1;

[0038] A first pipe 2, one end of the first pipe 2 and the bottom cover 1 enclose a first cavity 3;

[0039] The second pipe fitting 4 , the first pipe fitting 2 is nested in the second pipe fitting 4 , the first pipe fitting 2 , the bottom cover 1 and the second pipe fitting 4 form a second cavity 5 ; the first pressure sensor 6 is connected to the first cavity 3 , and the second pressure sensor 7 is connected to the second cavity 5 .

[0040] The above automatic transmission oil changer has at least the following beneficial effects:

[0041] The first pressure sensor 6 can measure the liquid level in the first cavity 3, and the volume of the liquid in the first cavity 3 can be converted by the liquid level in the first cavity 3 and the cross-sectional area of ​​the first cavity 3; the second pressure sensor 7 can measure the liquid level in the second cavity 5, and the volume of the liquid in the second cavity 5 can be converted by the liquid level in the second cavity 5 and the cross-sectional area of ​​the second cavity 5; the first pressure sensor 6 and the second pressure sensor 7 can reduce the influence of external vibration, external airflow and bubbles in the liquid, and can reduce the error of liquid measurement; the second cavity 5 surrounds the first cavity 3, the first cavity 3 can be used to accommodate hot oil extracted from the gearbox, and the second cavity 5 can be used to accommodate cold oil to be injected into the gearbox. The second cavity 5 can block the heat of the hot oil in the first cavity 3 from diffusing outward to prevent the hot oil from causing burns to personnel. The heat transfer between the first cavity 3 and the second cavity 5 can heat the cold oil, reduce the temperature difference between the cold oil and the gearbox, and help prevent the gearbox from cooling suddenly.

[0042] Regarding the bottom cover 1, the shape of the bottom cover 1 is a disc. The bottom cover 1 is arranged on the bottom surface of the first pipe fitting 2 and the second pipe fitting 4. The first pressure sensor 6 and the second pressure sensor 7 are arranged on the bottom surface of the bottom cover 1. The bottom cover 1 and the first pipe fitting 2 and the second pipe fitting 4 are matched by threads. The outer side surfaces of the first pipe fitting 2 and the second pipe fitting 4 are provided with external threads, and the first pipe fitting 2 and the second pipe fitting 4 can be embedded in the bottom cover 1 and be tightly connected with the bottom cover 1 by thread matching. The connection method between the bottom cover 1 and the first pipe fitting 2 and the second pipe fitting 4 can also be selected but not limited to bonding. A sealing ring can also be arranged between the bottom cover 1 and the first pipe fitting 2 and the second pipe fitting 4, which is conducive to strengthening the sealing between the first cavity 3 and the second cavity 5.

[0043] Regarding the first pressure sensor 6 and the second pressure sensor 7 , the first pressure sensor 6 and the second pressure sensor 7 may be selected from but not limited to piezoelectric liquid level sensors.

[0044] Regarding the first pipe 2 and the second pipe 4, the first pipe 2 and the second pipe 4 can be selected from but not limited to metal pipes or plastic pipes. The first pipe 2 and the second pipe 4 are coaxially arranged. The first pipe 2 and the second pipe 4 are in the shape of round tubes, and the diameter of the first pipe 2 is smaller than that of the second pipe 4.

[0045] Regarding the first cavity 3, the shape of the first cavity 3 is cylindrical. The first cavity 3 can contain hot oil, and the hot oil refers to the old oil extracted and recovered from the gearbox.

[0046] Regarding the second cavity 5, the shape of the second cavity 5 is cylindrical. The second cavity 5 can accommodate cold oil, and the cold oil refers to the new oil that is about to be injected into the gearbox.

[0047] In a possible implementation, the automatic transmission oil changer is provided with a level gauge 8. The level gauge 8 can correct the spatial position of the first pipe 2 and the second pipe 4, which is helpful to reduce the inclination of the first pipe 2 and the second pipe 4, so that the liquid level of the first pipe 2 and the second pipe 4 can more truly reflect the volume of the liquid in the first cavity 3 and the second cavity 5.

[0048] Regarding the level 8, the level 8 is a common measuring tool for measuring small angles in the prior art, and can be used to measure the inclination angle relative to the horizontal position, the flatness and straightness of the guide rails of machine tool equipment, the horizontal position and vertical position of the equipment installation, etc. The level 8 is arranged on the top of the automatic transmission oil changer, which is convenient for the operator to observe at any time.

[0049] In a possible implementation, the automatic transmission oil changer is further provided with a plurality of casters 9, which can support the automatic transmission oil changer and enable the automatic transmission oil changer to be moved by the casters 9. The casters 9 make it easy to move the automatic transmission oil changer and are also conducive to adjusting the level by selecting the position of the automatic transmission oil changer, so that the calibration process of the level meter 8 is easy to operate.

[0050] Regarding the casters 9, the number of the casters 9 is four. The casters 9 are arranged at the bottom of the automatic transmission oil changer. Each caster 9 is arranged around the bottom cover 1.

[0051] In a possible implementation, the first pressure sensor 6 and the second pressure sensor 7 are piezoelectric liquid level sensors. The piezoelectric liquid level sensor can accurately measure the liquid level, which is conducive to accurately measuring the volume of the liquid in the first cavity 3 and the second cavity 5.

[0052] Regarding the piezoelectric liquid level sensor, the piezoelectric liquid level sensor is a piezoelectric sensor in the prior art.

[0053] In a possible implementation, the automatic transmission oil changer further includes a plurality of heat-insulating joints 10, a heat-insulating joint 10 is provided between the first pressure sensor 6 and the first cavity 3, a heat-insulating joint 10 is also provided between the second pressure sensor 7 and the second cavity 5, the first pressure sensor 6 is connected to the first cavity 3 through the heat-insulating joint 10, the second pressure sensor 7 is connected to the second cavity 5 through the heat-insulating joint 10, and the heat-insulating joint 10 is made of plastic. The heat-insulating joint 10 is made of plastic, has good heat-insulating properties, can slow down the heat transfer between the bottom cover 1 and the first pressure sensor 6 and the second pressure sensor 7, and is conducive to reducing the measurement error of the first pressure sensor 6 and the second pressure sensor 7.

[0054] In a possible implementation, the thermal insulation joint 10 is made of polytetrafluoroethylene, which has good thermal insulation performance.

[0055] Regarding the thermal insulation joint 10 , one end of the thermal insulation joint 10 is threadedly matched with the bottom cover 1 , and the other end of the thermal insulation joint 10 is threadedly matched with the adapter 11 .

[0056] In a possible implementation, the automatic transmission oil changer further includes an adapter 11, an adapter 11 is provided between the first pressure sensor 6 and the thermal insulation joint 10, and an adapter 11 is also provided between the second pressure sensor 7 and the thermal insulation joint 10. The adapter 11 makes the first pressure sensor 6 and the thermal insulation joint 10 form an angle with each other, and the adapter 11 makes the second pressure sensor 7 and the thermal insulation joint 10 form an angle with each other. The adapter 11 enables the first pressure sensor 6 and the second pressure sensor 7 to be arranged parallel to the bottom cover 1, which is conducive to improving space utilization and making the automatic transmission oil changer more compact.

[0057] Regarding the adapter 11, Figure 3 As shown, the adapter 11 arranges the first pressure sensor 6 perpendicular to the thermal insulation joint 10 , and the adapter 11 arranges the second pressure sensor 7 perpendicular to the thermal insulation joint 10 .

[0058] In a possible implementation, the automatic transmission oil changer further includes a plurality of drain joints 12, the adapter 11 is a three-way joint, one end of the adapter 11 is connected to the insulation joint 10, one end of the adapter 11 is connected to the first pressure sensor 6 or the second pressure sensor 7, and one end of the adapter 11 is connected to the drain joint 12. The drain joint 12 is connected to the adapter 11 and can be used to discharge the liquid in the first cavity 3 and the second cavity 5.

[0059] Regarding the drain connector 12 , the drain connector 12 can be used to connect a pipeline and communicate with a vehicle transmission through the pipeline.

[0060] The structure of the weighing type automatic transmission oil changer in the prior art is as follows: Figure 4 As shown. The weighing sensor 15 is arranged below the tray 14, and the oil tank 13 can be arranged above the tray 14. The weighing sensor 15 converts the amount of liquid in the oil tank 13 by measuring the weight change of the oil tank 13. When the weighing sensor 15 is affected by external vibrations, the measurement error is more obvious. In addition, the oil extraction of the oil tank 13 requires the oil extraction pipe to be extended into the oil tank, and the oil extraction pipe is easy to float in the oil tank. When the liquid level in the oil tank is low, it is difficult for the liquid in the oil tank to fully immerse the pipe mouth of the oil extraction pipe, resulting in the phenomenon of emptying the oil extraction pipe, allowing air to enter the oil extraction pipe, and causing errors in the measurement results. The automatic transmission oil changer proposed in this technical solution can reduce the impact of external vibrations on the measurement results, and can also avoid the phenomenon of emptying, thereby reducing the measurement error.

[0061] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. Automatic transmission oil changer, characterized in that: include: back cover; a first pressure sensor, wherein the first pressure sensor is disposed on the bottom cover; a second pressure sensor, the second pressure sensor being disposed on the bottom cover; A first tube, one end of the first tube and the bottom cover form a first cavity; a second pipe, wherein the first pipe is nested in the second pipe, and the first pipe, the bottom cover and the second pipe form a second cavity; the first pressure sensor is connected to the first cavity, and the second pressure sensor is connected to the second cavity; The automatic transmission oil changer is provided with a level; the automatic transmission oil changer is also provided with a plurality of casters, the casters can support the automatic transmission oil changer, and the automatic transmission oil changer can be moved by the casters; The automatic transmission oil changer also includes a plurality of thermal insulation joints, wherein the thermal insulation joints are provided between the first pressure sensor and the first cavity, and the thermal insulation joints are also provided between the second pressure sensor and the second cavity. The first pressure sensor is connected to the first cavity via the thermal insulation joints, and the second pressure sensor is connected to the second cavity via the thermal insulation joints, and the thermal insulation joints are made of plastic.

2. The automatic transmission oil changer according to claim 1, characterized in that: The first pressure sensor and the second pressure sensor are piezoelectric liquid level sensors.

3. The automatic transmission oil changer according to claim 1, characterized in that: The material of the thermal insulation joint is polytetrafluoroethylene.

4. The automatic transmission oil changer according to claim 1, characterized in that: The automatic transmission oil changer also includes an adapter, which is arranged between the first pressure sensor and the thermal insulation joint, and is also arranged between the second pressure sensor and the thermal insulation joint. The adapter makes the first pressure sensor and the thermal insulation joint form an angle with each other, and the adapter makes the second pressure sensor and the thermal insulation joint form an angle with each other.

5. The automatic transmission oil changer according to claim 4, characterized in that: The automatic transmission oil changer also includes a plurality of drain joints, the adapter is a three-way joint, one end of the adapter is connected to the insulation joint, one end of the adapter is connected to the first pressure sensor or the second pressure sensor, and one end of the adapter is connected to the drain joint.

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