Oil tank structure and sewing machine with same

Abstract

The utility model provides an oil tank structure and a sewing machine with the same. The oil tank structure comprises a main tank body and an oil inlet part, and an oil outlet is formed in the main tank body; an oil storage cavity is formed in the main box body, and the oil outlet is communicated with the oil storage cavity; the oil inlet part is arranged on the main box body, an oil inlet channel is defined by the oil inlet part, one end of the oil inlet channel communicates with the oil storage cavity, and an oil inlet is formed in the other end of the oil inlet channel; the adjusting part is arranged in the oil storage cavity, and at least part of the adjusting part extends into the oil inlet channel; at least part of the outer edge of the adjusting piece is separated from the inner wall of the oil inlet channel, and at least part of the outer edge of the adjusting piece is matched with the oil inlet; the adjusting piece is movably arranged so as to move to the plugging position where at least part of the adjusting piece plugs the oil inlet or the avoiding position where at least part of the adjusting piece and the oil inlet avoid each other. According to the technical scheme, the technical problem that in the prior art, the oil pressure is large due to the fact that the oil inlet amount of an oil tank structure is too large can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil tank structure technical field, specifically, relate to an oil tank structure and have its sewing machine. BACKGROUND

[0002] At present, the oil tank structure is mainly responsible for storing and providing oil liquid in mechanical equipment, thereby ensuring the normal operation of the equipment and the full lubrication of the parts.

[0003] However, in practical application, the structure design inside the oil tank often fails to fully consider the dynamic change of the oil liquid, lacks effective oil level adjustment and oil pressure balancing mechanism. When the oil liquid is too much, the oil pressure increases, which may cause the oil liquid to flow out from other outlets except the oil outlet, resulting in oil leakage of the oil tank, and further causing damage to the sealing property of the oil tank. Although part of the oil tank in the prior art is equipped with an oil pressure control system, these systems are often complex in structure, high in cost, and may fail due to insufficient sensitivity of the oil pressure sensor or defects of the control algorithm in some cases, and cannot accurately control the oil pressure. SUMMARY

[0004] The main purpose of the utility model is to provide an oil tank structure and a sewing machine with the same, so as to solve the technical problem that excessive oil inflow of the oil tank structure in the prior art leads to high oil pressure.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an oil tank structure is provided, comprising:

[0006] A main tank body and an oil inlet portion, the main tank body is provided with an oil outlet; the main tank body has an oil storage cavity inside, and the oil outlet is in communication with the oil storage cavity; the oil inlet portion is arranged on the main tank body, and the oil inlet portion surrounds an oil inlet channel, one end of the oil inlet channel is in communication with the oil storage cavity, and the other end has an oil inlet port;

[0007] An adjusting piece is arranged in the oil storage cavity, at least part of the adjusting piece extends into the oil inlet channel; the outer edge of at least part of the adjusting piece is spaced apart from the inner wall of the oil inlet channel, and the outer edge of at least part of the adjusting piece is matched with the oil inlet port;

[0008] Among them, the adjusting piece is movably arranged to move to a blocking position in which at least part of the adjusting piece blocks the oil inlet port, or to a avoiding position in which at least part of the adjusting piece and the oil inlet port avoid each other.

[0009] Further, the adjusting piece comprises:

[0010] A float and a blocking piece connected with each other, the float floats on the oil liquid; the blocking piece is located on the side of the float close to the oil inlet portion, and at least part of the blocking piece forms at least part of the adjusting piece.

[0011] Furthermore, the blocking member includes a first blocking section and a second blocking section connected to each other, wherein the first blocking section is located on a side of the second blocking section close to the floating block;

[0012] Wherein, the outer edge of the first blocking section is spaced apart from the inner wall of the oil inlet channel; and / or,

[0013] The outer edge of the second blocking section is spaced from the inner wall of the oil inlet channel and is adapted to the oil inlet; and / or,

[0014] The second blocking section is a conical structure.

[0015] Furthermore, the main box body includes a top and a bottom that are arranged opposite to each other, and the top is located above the bottom; the top and the bottom are arranged around the oil storage cavity; a limiting member is provided on a side of the bottom close to the top;

[0016] Wherein, a limiting cavity is provided on one side of the floating block close to the bottom, and at least a portion of the limiting member is located in the limiting cavity; and / or,

[0017] There are at least two floating blocks, which are spaced apart and connected to the blocking member. One of the at least two floating blocks is located on a side of the blocking member away from the other of the at least two floating blocks.

[0018] Furthermore, the fuel tank structure also includes:

[0019] The plug body comprises a plug body, at least a portion of which is arranged in the oil inlet and has an interference fit with the oil inlet; the plug body comprises an oil delivery channel, and an end of the oil delivery channel close to the oil inlet channel forms an oil through port connected to the oil inlet channel; at least a portion of the outer edge of the adjusting member is adapted to the oil through port.

[0020] Furthermore, the main box includes:

[0021] The first box body and the second box body are connected to each other, the first box body forms a first oil storage chamber, the second box body forms a second oil storage chamber connected to the first oil storage chamber, the oil inlet is arranged on the first box body, and the oil outlet is arranged on the second box body; the adjusting part is arranged in the first oil storage chamber.

[0022] Furthermore, the main box includes:

[0023] An upper box body and a lower box body, the upper box body is located above the lower box body, a first connecting part is provided on a side of the upper box body close to the lower box body, and a second connecting part for connecting with the first connecting part is provided on a side of the lower box body close to the upper box body, and the first connecting part and the second connecting part are adaptively arranged.

[0024] Furthermore, the first connection portion is arranged around the outer edge of the upper box body, and the second connection portion is arranged around the outer edge of the lower box body; and / or,

[0025] One of the first connecting portion and the second connecting portion is a connecting groove, and the other is a connecting protrusion; and / or,

[0026] The first connection portion and the second connection portion are adhesively connected.

[0027] Furthermore, the fuel tank structure also includes:

[0028] an exhaust portion, which is provided on the main housing and above the oil storage chamber, and is provided with an exhaust port which is in communication with the oil storage chamber; and / or,

[0029] The first mounting part and the second mounting part are respectively located on both sides of the main box body, the first mounting part is provided with a first mounting hole for connecting to the structure to be installed, and the second mounting part is provided with a second mounting hole for connecting to the structure to be installed.

[0030] According to another aspect of the present invention, a sewing machine is provided, comprising: the oil tank structure provided above.

[0031] By applying the technical solution of the present invention, when oil enters the fuel tank from the oil inlet, since at least part of the outer edge of the regulating member is spaced apart from the inner wall of the oil inlet passage, the oil can flow into the oil storage chamber from the gap between the two. As the amount of oil inside the fuel tank increases, the regulating member can move to a blocking position that can block the oil inlet. Since at least part of the outer edge of the regulating member is compatible with the oil inlet, this can prevent the oil from further flowing into the oil storage chamber, thereby achieving automatic regulation of the oil volume. When the oil consumption causes the oil level to drop, the regulating member can automatically move to a retracting position, allowing the oil to enter the fuel tank again through the gap between at least part of the outer edge of the regulating member and the inner wall of the oil inlet passage, ensuring the dynamic balance of the oil volume in the fuel tank, avoiding excessive oil filling the oil storage chamber and causing an abnormal increase in oil pressure, thereby effectively controlling the oil pressure in the fuel tank and preventing oil leakage caused by excessive oil pressure. Therefore, the technical solution of the present invention can solve the technical problem of excessive oil intake leading to high oil pressure in the fuel tank structure in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A schematic diagram of the exploded structure of the fuel tank structure provided according to the first embodiment of the present utility model is shown;

[0034] Figure 2 A schematic structural diagram of a fuel tank structure according to the first embodiment of the present invention is shown;

[0035] Figure 3 A cross-sectional structure schematic view of an oil tank structure according to an embodiment one provided by the present application is shown;

[0036] Figure 4 A cross-sectional structure schematic view of an oil tank structure according to an embodiment one provided by the present application is shown; Figure 3 An enlarged schematic view of the structure at I in the middle is shown;

[0037] Figure 5 An enlarged schematic view of the structure at II in the middle is shown. Figure 3 An enlarged schematic view of the structure at II in the middle is shown.

[0038] Among the above drawings, the following reference signs are included:

[0039] 10, main tank body;

[0040] 101, oil outlet;

[0041] 102, oil inlet;

[0042] 11, oil inlet part;

[0043] 111, oil inlet channel;

[0044] 12, top part;

[0045] 13, bottom part;

[0046] 131, limiting piece;

[0047] 14, first tank body part;

[0048] 141, first oil storage cavity;

[0049] 15, second tank body part;

[0050] 151, second oil storage cavity;

[0051] 16, upper tank body;

[0052] 161, first connecting part;

[0053] 17, lower tank body;

[0054] 171, second connecting part;

[0055] 20, adjusting piece;

[0056] 21, floating block;

[0057] 211, limiting cavity;

[0058] 22, plugging piece;

[0059] 221, first plugging section;

[0060] 222, second plugging section;

[0061] 30, plug body;

[0062] 31. Oil pipeline;

[0063] 311, oil port;

[0064] 40. Exhaust unit;

[0065] 41. Exhaust port;

[0066] 50. First mounting portion;

[0067] 60. Second mounting portion. DETAILED DESCRIPTION

[0068] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0069] like Figures 1 to 5 As shown, the first embodiment of the present invention provides an oil tank structure, which includes a main tank body 10 and an oil inlet 11. The main tank body 10 is provided with an oil outlet 101. The main tank body 10 has an oil storage chamber, and the oil outlet 101 is connected to the oil storage chamber. The oil inlet 11 is provided on the main tank body 10, and the oil inlet 11 forms an oil inlet channel 111. One end of the oil inlet channel 111 is connected to the oil storage chamber, and the other end has an oil inlet 102. The oil tank structure also includes an adjusting member 20, which is provided in the oil storage chamber, and at least a portion of the adjusting member 20 extends into the oil inlet channel 111. At least a portion of the outer edge of the adjusting member 20 is spaced from the inner wall of the oil inlet channel 111, and at least a portion of the outer edge of the adjusting member 20 is adapted to the oil inlet 102. The adjusting member 20 is movably provided to move to a blocking position where at least a portion of the adjusting member 20 blocks the oil inlet 102 or a avoiding position where at least a portion of the adjusting member 20 avoids the oil inlet 102 .

[0070] The oil tank structure provided by the embodiment one of the utility model can solve the technical problem of excessive oil inflow of the oil tank structure in the prior art causing large oil pressure.

[0071] It should be noted that "the outer edge of the at least part of the adjusting member 20 is matched with the oil inlet port 102" means that the outer edge of the at least part of the adjusting member 20 can be inserted into the oil inlet port 102 and matched with the inner wall of the oil inlet port 102 to prevent the oil from flowing into the oil storage cavity from the oil inlet port 102.

[0072] Specifically, the adjusting member 20 comprises a floating block 21 and a blocking member 22 connected with each other, the floating block 21 floats on the oil, and the blocking member 22 is located on the side of the floating block 21 close to the oil inlet part 11, and at least part of the blocking member 22 forms the at least part of the adjusting member 20. By adopting such a structure, the floating block 21 and the blocking member 22 are connected with each other, and the floating block 21 is used to automatically control the adjustment of the blocking member 22 to the oil inlet port 102 according to the characteristics of the oil level. When the oil level rises, the floating block 21 rises with the oil level, and drives the blocking member 22 to move to the blocking position to effectively block the oil inlet port 102 and prevent the oil from continuing to flow in to prevent the oil pressure from being too large. When the oil level drops, the floating block 21 drops with the oil level, and the blocking member 22 automatically moves to the avoiding position to allow the oil to enter again, so as to ensure that the oil tank can automatically adjust the oil amount according to the actual demand, thereby improving the oil pressure control ability of the oil tank and enhancing the stability and safety of the equipment.

[0073] It should be noted that the density of the floating block is less than the density of the oil.

[0074] Specifically, the floating block 21 is located in the oil storage cavity.

[0075] Specifically, the blocking member 22 and the oil inlet part 11 are arranged along a preset direction. With such an arrangement, the preset direction ensures correct positioning of the blocking member 22 inside the oil tank, which can be quickly and accurately adjusted to the position of the oil inlet 102 for blocking or avoiding, thereby simplifying the internal structure of the oil tank, reducing the complexity of design and manufacturing, and improving the efficiency and reliability of the oil tank in oil pressure control.

[0076] Specifically, the blocking member 22 includes a first blocking section 221 and a second blocking section 222 connected to each other, and the first blocking section 221 is located on the side of the second blocking section 222 close to the float 21. The outer edge of the first blocking section 221 is spaced apart from the inner wall of the oil inlet channel 111. With such an arrangement, the first blocking section 221 is spaced apart from the inner wall of the oil inlet channel 111, which allows the oil to flow into the oil storage cavity from the space between the first blocking section 221 and the inner wall of the oil inlet channel 111 when blocking is not required, and the first blocking section 221 can be quickly moved to the blocking position under the guidance of the inner wall of the oil inlet channel 111. At the same time, this ensures the smoothness and reliability of the action of the blocking member 22, and avoids excessive contact between the blocking member 22 and the inner wall of the channel, reducing mechanical wear and prolonging the service life of the oil tank.

[0077] Specifically, the blocking member 22 includes a first blocking section 221 and a second blocking section 222 connected to each other, and the first blocking section 221 is located on the side of the second blocking section 222 close to the float 21. The outer edge of the second blocking section 222 is spaced apart from the inner wall of the oil inlet channel 111 and is adapted to the oil inlet 102. With such an arrangement, the second blocking section 222 is adapted to the oil inlet 102, which allows the blocking member 22 to accurately align and block the oil inlet 102 when the oil level reaches a high position, preventing excessive oil from entering and causing abnormal oil pressure. At the same time, the second blocking section 222 is spaced apart from the inner wall of the channel, which allows the oil to flow into the oil storage cavity from the space between the second blocking section 222 and the inner wall of the oil inlet channel 111 when blocking is not required, and the second blocking section 222 can be quickly moved to the blocking position under the guidance of the inner wall of the oil inlet channel 111. At the same time, this ensures the flexibility of the action of the blocking member 22, avoids blocking failure caused by friction or jamming, and ensures the normal operation of the oil tank.

[0078] Specifically, the second sealing section 222 has a conical structure. This allows it to better mate with the corresponding oil inlet 102, significantly enhancing the sealing effect of the sealing member 22 on the oil inlet 102. As the oil level rises, the conical structure can more closely adhere to the oil inlet 102 as the float 21 rises, effectively preventing oil leakage through the gap. Furthermore, as the oil level drops, the conical structure can more easily withdraw from the oil inlet 102, avoiding jamming caused by shape mismatch and ensuring smooth adjustment of the fuel tank during dynamic oil level changes.

[0079] In this embodiment, the main housing 10 includes a top 12 and a bottom 13 disposed opposite each other, with the top 12 positioned above the bottom 13. The top 12 and bottom 13 surround an oil reservoir. A limiter 131 is provided on the side of the bottom 13 proximate to the top 12. A limiter cavity 211 is provided on the side of the float 21 proximate to the bottom 13, with at least a portion of the limiter 131 located within the limiter cavity 211. This structural arrangement, by providing the limiter 131 on the bottom 13 of the main housing 10 and the corresponding limiter cavity 211 on the float 21, effectively controls the range of motion of the float 21, preventing excessive movement of the float 21 in the oil, which could cause misoperation of the blocking member 22 or collision with other tank components. This improves the stability and safety of the tank structure. This limiter mechanism ensures that the float 21 and blocking member 22 can accurately perform blocking and avoidance operations under varying oil pressures and oil levels, enhancing the tank's oil pressure regulation capability.

[0080] Specifically, there are at least two floats 21, spaced apart and connected to the blocking member 22. One of the at least two floats 21 is located on the side of the blocking member 22 away from the other of the at least two floats 21. This design, with at least two floats 21 spaced apart and connected to the blocking member 22, enhances the stability of the floats 21. Even if the fuel tank is subjected to external shock or vibration, the floats 21 are less likely to shift, thereby ensuring accurate operation of the blocking member 22. Furthermore, the use of multiple floats 21 improves the fuel tank's sensitivity and responsiveness to changes in oil pressure, enabling the tank to quickly seal the oil inlet 102 when the oil level reaches a high level, preventing oil leakage caused by excessive oil pressure and enhancing the tank's adaptability and reliability.

[0081] In the embodiment, the oil tank structure further comprises a plug body 30, at least a part of the plug body 30 is arranged in the oil inlet 102 and is in interference fit with the oil inlet 102; the plug body 30 has an oil delivery channel 31 therein, the oil delivery channel 31 is adjacent to one end of the oil inlet channel 111 and forms an oil outlet port 311 in communication with the oil inlet channel 111; an outer edge of at least a part of the adjusting member 20 is adapted to the oil outlet port 311. With such a structure, the interference fit between the plug body 30 and the oil inlet 102 can provide additional sealing effect, further reducing the risk of oil leakage. The oil delivery channel 31 arranged in the plug body 30 is in communication with the oil inlet channel 111, and by being adapted to the adjusting member 20, the flow of oil can be accurately controlled. When the oil in the oil tank reaches a certain level, the outer edge of at least a part of the adjusting member 20 can tightly fit with the oil outlet port 311, automatically blocking the further inflow of oil, avoiding excessive oil pressure. Conversely, when the oil level decreases, the adjusting member 20 avoids the oil outlet port 311, the oil outlet port 311 is open, and the oil can enter again, ensuring the dynamic balance of the oil in the oil tank.

[0082] Specifically, the plug body 30 is a rubber plug.

[0083] Specifically, the main tank body 10 comprises a first tank body part 14 and a second tank body part 15 connected to each other, the first tank body part 14 forms a first oil storage cavity 141, the second tank body part 15 forms a second oil storage cavity 151 in communication with the first oil storage cavity 141, the oil inlet part 11 is arranged on the first tank body part 14, the oil outlet 101 is arranged on the second tank body part 15; the adjusting member 20 is arranged in the first oil storage cavity 141. With such a structure, by dividing the main tank body 10 into the first tank body part 14 and the second tank body part 15 to form the first oil storage cavity 141 and the second oil storage cavity 151 respectively, such a separation design helps to distribute and manage the flow of oil in the oil tank, enhancing the stability of the oil tank structure and the efficiency of oil storage. The oil inlet part 11 is arranged on the first tank body part 14, ensuring that the oil can directly enter the first oil storage cavity 141, and the arrangement of the adjusting member 20 can monitor and adjust the oil level in the first oil storage cavity 141 in real time, effectively preventing excessive oil pressure and ensuring the safety of the oil tank operation. The second oil storage cavity 151 can increase the oil storage capacity of the oil tank, facilitating the provision of sufficient oil for the equipment behind the oil outlet 101.

[0084] Specifically, the main tank body 10 includes an upper tank body 16 and a lower tank body 17, the upper tank body 16 is located above the lower tank body 17, the upper tank body 16 is provided with a first connecting part 161 on one side close to the lower tank body 17, the lower tank body 17 is provided with a second connecting part 171 for connecting with the first connecting part 161 on one side close to the upper tank body 16, and the first connecting part 161 and the second connecting part 171 are adaptively arranged. With such a structure, by dividing the main tank body 10 into the upper tank body 16 and the lower tank body 17, and adaptively designing the first connecting part 161 and the second connecting part 171, the assembly process of the oil tank is simplified, and the production efficiency is improved. This connection method not only ensures the firm connection between the parts of the oil tank, but also realizes the modular design of the oil tank by adjusting the size and shape of the connecting parts, facilitating flexible assembly and maintenance according to different application scenarios and needs.

[0085] It should be noted that the upper tank body 16 includes part of the first tank body 14 and part of the second tank body 15, and the lower tank body 17 includes another part of the first tank body 14 and another part of the second tank body 15. The top 12 is part of the structure of the upper tank body 16, and the bottom 13 is part of the structure of the lower tank body 17.

[0086] Specifically, the first connecting part 161 is arranged around the outer edge of the upper tank body 16, and the second connecting part 171 is arranged around the outer edge of the lower tank body 17. In this way, a larger contact area can be provided, increasing the connection strength between the upper tank body 16 and the lower tank body 17, effectively preventing connection loosening under external impact or high temperature environment, and improving the stability and durability of the oil tank structure. At the same time, this design is also conducive to the uniform distribution of internal pressure of the oil tank, avoiding deformation or damage of the oil tank caused by local stress concentration.

[0087] Specifically, one of the first connecting part 161 and the second connecting part 171 is a connecting groove, and the other is a connecting protrusion. With such a structure, the cooperation of the connecting groove and the connecting protrusion provides additional mechanical locking effect, making the connection between the upper tank body 16 and the lower tank body 17 more reliable, which can effectively avoid accidental separation of the oil tank during operation, further enhancing the sealing and stability of the oil tank structure. In addition, this connection method is also conducive to waterproof and dustproof of the oil tank, improving the environmental adaptability of the oil tank.

[0088] Specifically, one of the first connecting part 161 and the second connecting part 171 is part of a mortise and tenon structure, and the other is the other part of the mortise and tenon structure.

[0089] Specifically, the first connecting portion 161 and the second connecting portion 171 are bonded together. This structural arrangement, through the bonding between the first connecting portion 161 and the second connecting portion 171, not only enhances the sealing and durability of the connection, but also simplifies the fuel tank assembly process and reduces production costs. This bonding effectively prevents the degradation of the fuel tank's sealing effectiveness due to wear and tear of the mechanical connection over long-term use, ensuring stable operation of the fuel tank under various operating conditions. It also facilitates disassembly and maintenance of the fuel tank, improving maintenance efficiency and increasing its service life.

[0090] Specifically, the first connection portion 161 and the second connection portion 171 are connected by gluing.

[0091] In this embodiment, the fuel tank structure also includes a vent 40, which is disposed on the main tank body 10 and above the oil storage chamber. The vent 40 is provided with an exhaust port 41 that communicates with the oil storage chamber. This structural arrangement, along with the vent 40 and exhaust port 41, effectively releases gas generated within the fuel tank during oil filling and temperature changes. This not only helps maintain pressure balance within the fuel tank, preventing oil leakage or damage due to excessive air pressure, but also prevents gas accumulation from affecting the normal flow of oil, ensuring that the tank maintains good oil transmission performance and pressure stability under various operating conditions, thereby improving the tank's operating efficiency and safety.

[0092] Specifically, the fuel tank structure also includes a first mounting portion 50 and a second mounting portion 60, which are respectively located on either side of the main tank body 10. The first mounting portion 50 is provided with a first mounting hole for connecting to the structure to be installed, and the second mounting portion 60 is provided with a second mounting hole for connecting to the structure to be installed. Thus, the provision of the first mounting portion 50 and the second mounting portion 60 provides a stable mounting method for the fuel tank and external equipment or structures. The first mounting hole and the second mounting hole enable the fuel tank to be quickly and accurately fixed, facilitating the installation, removal, and maintenance of the fuel tank. This design not only ensures the positioning accuracy of the fuel tank during installation, but also disperses external forces acting on the fuel tank through rationally distributed mounting points, avoiding deformation or damage to the fuel tank caused by excessive force at a single point, thereby enhancing the structural stability and service life of the fuel tank. It also improves the versatility and flexibility of the fuel tank, making it easier to use in different environments.

[0093] Specifically, the structure to be installed is a sewing machine body.

[0094] Specifically, the working principle of the oil tank structure is as follows: the oil liquid enters from the oil inlet 102 and exits from the oil outlet 101, when the oil tank behind the oil outlet 101 is full of oil, the oil liquid gradually fills the oil storage cavity in the main tank body 10, the air is extruded and discharged from the air outlet 41, the floating block 21 floats up, and then the blocking piece 22 pushes against the rubber plug to block the oil inlet 311, so that the oil liquid cannot further enter the oil storage cavity, and the problem of oil leakage caused by excessive oil pressure is avoided. When the oil tank behind the oil outlet 101 is consumed, the floating block 21 drives the blocking piece 22 to fall, the oil liquid enters the oil storage cavity, and the above steps are repeated, so that the oil amount control and the effects of adjusting the oil pressure and reducing oil leakage are realized.

[0095] Embodiment two of the utility model provides a sewing machine, sewing machine includes the oil tank structure provided in embodiment one.

[0096] When the oil liquid enters the oil tank from the oil inlet 102, the outer edge of at least part of the adjusting piece 20 is spaced apart from the inner wall of the oil inlet channel 111, and the oil liquid can flow into the oil storage cavity through the space between the two. With the increase of the oil liquid in the oil tank, the adjusting piece 20 can be moved to the blocking position capable of blocking the oil inlet 102, and the outer edge of at least part of the adjusting piece 20 is matched with the oil inlet 102, so that the oil liquid cannot further flow into the oil storage cavity, thereby realizing automatic adjustment of the oil amount. When the oil level drops due to oil consumption, the adjusting piece 20 can automatically move to the avoiding position, so that the oil liquid can enter again through the space between the outer edge of at least part of the adjusting piece 20 and the inner wall of the oil inlet channel 111, ensuring the dynamic balance of the oil amount in the oil tank, avoiding excessive filling of the oil storage cavity caused by the oil liquid, thereby effectively controlling the oil pressure in the oil tank, and preventing oil leakage caused by excessive oil pressure. Therefore, through the sewing machine provided by the embodiment, the technical problem of excessive oil pressure caused by excessive oil amount of the oil tank structure in the prior art can be solved.

[0097] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: through the innovative design of the floating block and the blocking piece, the oil tank can automatically adjust the opening and closing of the oil inlet according to the internal oil amount, effectively avoiding the problem of oil leakage caused by excessive oil pressure, improving the sealing performance and use safety of the oil tank; the upper tank body and the lower tank body adopt the mortise and tenon structure and are reinforced with special glue, which not only ensures the structural strength of the oil tank as a whole, but also ensures the stability of the oil tank when it is subjected to external impact or vibration, reduces the faults caused by structural problems, and prolongs the service life of the oil tank.

[0098] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0099] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the actual proportions used in the fabrication, assembly, and operation of the example embodiments. Techniques, methods, and apparatus known to those of ordinary skill can not be discussed in detail herein. However, the techniques, methods, and apparatus are to be considered as part of the description of the application, where appropriate. In all examples shown and discussed herein, any specific values are to be interpreted as illustrative only and not as a limitation. Thus, other examples of example embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0100] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are generally based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0101] For purposes of the description hereinafter, spatial

[0102] In addition, it should be noted that the use of the terms "first", "second", etc., to describe a component having a defined property is only intended to distinguish between that component and another component having a different defined property, and is not otherwise intended to limit the scope of the present application unless otherwise indicated. Thus, use of the term "first" to describe a component is intended to connote that the component so qualified is not necessarily described first, but is intended to serve its qualification purpose in distinguishing that component from another component which is "second" in order of description.

[0103] The preferred embodiments of the present application have been described above with the purpose of enabling not only the best modes of practicing the application known to the inventors at this time, but also of enabling others skilled in the art to utilize the application in various embodiments and with various modifications as are suited to the particular use contemplated. Therefore, the above description is intended to be illustrative, but not restrictive, of the scope of the present application. All patents and patent applications mentioned herein are hereby incorporated by reference in their entirety.

Claims

1. A fuel tank structure, characterized in that: include: A main box body (10) and an oil inlet portion (11), wherein the main box body (10) is provided with an oil outlet (101); an oil storage cavity is provided in the main box body (10), and the oil outlet (101) is communicated with the oil storage cavity; the oil inlet portion (11) is provided on the main box body (10), and the oil inlet portion (11) forms an oil inlet channel (111), one end of the oil inlet channel (111) is communicated with the oil storage cavity, and the other end has an oil inlet (102); An adjusting member (20) is disposed in the oil storage cavity, and at least a portion of the adjusting member (20) extends into the oil inlet passage (111); at least a portion of the outer edge of the adjusting member (20) is spaced from the inner wall of the oil inlet passage (111), and at least a portion of the outer edge of the adjusting member (20) is adapted to the oil inlet port (102); The adjusting member (20) is movably arranged to move to a blocking position in which at least a portion of the adjusting member (20) blocks the oil inlet (102) or a avoiding position in which at least a portion of the adjusting member (20) avoids the oil inlet (102).

2. The fuel tank structure according to claim 1, characterized in that: The regulating member (20) comprises: A floating block (21) and a sealing member (22) are connected to each other, wherein the floating block (21) floats on the oil; the sealing member (22) is located on a side of the floating block (21) close to the oil inlet (11), and at least a portion of the sealing member (22) forms at least a portion of the regulating member (20).

3. The fuel tank structure according to claim 2, characterized in that: The blocking member (22) comprises a first blocking section (221) and a second blocking section (222) connected to each other, wherein the first blocking section (221) is located on a side of the second blocking section (222) close to the floating block (21); wherein the outer edge of the first blocking section (221) is spaced apart from the inner wall of the oil inlet channel (111); and / or, The outer edge of the second blocking section (222) is spaced apart from the inner wall of the oil inlet channel (111) and is adapted to the oil inlet (102); and / or, The second blocking section (222) is a conical structure.

4. The fuel tank structure according to claim 2, characterized in that: The main box body (10) comprises a top (12) and a bottom (13) arranged opposite to each other, wherein the top (12) is located above the bottom (13); the top (12) and the bottom (13) are arranged around the oil storage cavity; a limiting member (131) is provided on a side of the bottom (13) close to the top (12); Wherein, a limiting cavity (211) is provided on one side of the floating block (21) close to the bottom (13), and at least a portion of the limiting member (131) is located in the limiting cavity (211); and / or, There are at least two floating blocks (21), which are spaced apart and connected to the blocking member (22). One of the at least two floating blocks (21) is located on a side of the blocking member (22) away from the other of the at least two floating blocks (21).

5. The fuel tank structure according to claim 1, characterized in that: The fuel tank structure also includes: A plug body (30), at least a portion of the plug body (30) is disposed in the oil inlet (102) and is interference-fitted with the oil inlet (102); an oil delivery passage (31) is provided in the plug body (30), and an end of the oil delivery passage (31) close to the oil inlet passage (111) forms an oil through port (311) connected to the oil inlet passage (111); at least a portion of the outer edge of the adjusting member (20) is adapted to the oil through port (311).

6. The fuel tank structure according to claim 1, characterized in that: The main box (10) comprises: A first box body (14) and a second box body (15) are connected to each other, the first box body (14) encloses a first oil storage chamber (141), the second box body (15) encloses a second oil storage chamber (151) connected to the first oil storage chamber (141), the oil inlet (11) is arranged on the first box body (14), the oil outlet (101) is arranged on the second box body (15); and the adjusting member (20) is arranged in the first oil storage chamber (141).

7. The fuel tank structure according to claim 1, characterized in that: The main box (10) comprises: An upper box body (16) and a lower box body (17), wherein the upper box body (16) is located above the lower box body (17), a first connecting portion (161) is provided on a side of the upper box body (16) close to the lower box body (17), and a second connecting portion (171) for connecting with the first connecting portion (161) is provided on a side of the lower box body (17) close to the upper box body (16), and the first connecting portion (161) and the second connecting portion (171) are adaptively arranged.

8. The fuel tank structure according to claim 7, characterized in that: The first connecting portion (161) is arranged around the outer edge of the upper box body (16), and the second connecting portion (171) is arranged around the outer edge of the lower box body (17); and / or, One of the first connecting portion (161) and the second connecting portion (171) is a connecting groove, and the other is a connecting protrusion; and / or, The first connecting portion (161) and the second connecting portion (171) are adhesively connected.

9. The fuel tank structure according to claim 1, characterized in that: The fuel tank structure also includes: an exhaust portion (40) provided on the main housing (10) and located above the oil storage chamber, the exhaust portion (40) being provided with an exhaust port (41) communicating with the oil storage chamber; and / or, A first mounting portion (50) and a second mounting portion (60), wherein the first mounting portion (50) and the second mounting portion (60) are respectively located on two sides of the main box body (10), the first mounting portion (50) is provided with a first mounting hole for connecting to a structure to be installed, and the second mounting portion (60) is provided with a second mounting hole for connecting to the structure to be installed.

10. A sewing machine, characterized in that: include: The fuel tank structure according to any one of claims 1 to 9.

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