Oil injection joint capable of being quickly connected

Abstract

The utility model belongs to the technical field of connectors, and particularly discloses an oil injection connector capable of being connected quickly, which comprises a first connector body, a second connector body and a core body, is simple in structure and convenient to operate, and can be used for injecting oil only by applying external force to overcome the elastic force of a spring. The first oil hole is communicated with the second oil hole, and oil injected from the oil injection port sequentially passes through the first cavity, the first oil hole, the oil groove, the second oil hole and the second cavity and finally reaches the oil outlet. When the first connector body touches the contact switch arranged in the second connector body, oil filling is started, the built-in flow sensor can monitor the oil filling amount, and after oil filling is completed, the first connector body can automatically reset under the action of the elastic force of the spring, namely, the core body moves in the reverse direction relative to the first connector body; according to the oil injection connector, the dependence degree on manual operation can be effectively reduced, and the oil injection process is more automatic.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology and relates to an oil filling connector that can be quickly connected. Background Technology

[0002] In the use of mechanical equipment, adding fluids is a common operational step. Traditional fluid adding methods are usually highly dependent on manual operation, and this method has many drawbacks: First, manual fluid adding is time-consuming, labor-intensive, and inefficient; second, manual operation often lacks monitoring of the fluid flow rate, making it difficult to ensure the accuracy of the fluid volume added each time; and third, manual operation also carries the risk of misoperation, which can easily lead to fluid leakage or equipment damage.

[0003] With the increasing demand for modern machinery and equipment, existing oil filling joints are finding it increasingly difficult to meet the requirements for efficient and precise oil filling. Therefore, there is an urgent need to propose a new type of oil filling joint to solve the aforementioned technical problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to provide a quick-connect oil filling connector. When starting to fill the oil, only an external force that can overcome the spring force needs to be applied to it. After the oil filling is completed, the oil filling port and the oil outlet will automatically close under the action of the spring force. The operation is convenient and has little dependence on manual labor.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A quick-connect oil filling connector includes a first connector body, a second connector body, and a core.

[0007] The first connector body and the second connector body adopt a hollow structure. The first connector body is provided with an oil inlet, and the second connector body is provided with an oil outlet. One end of the first connector body is embedded in the cavity of the second connector body.

[0008] The core is set in the cavity of the first connector body. One end of the core abuts against the second connector body, and a spring is provided between the other end of the core and the first connector body. The core and the first connector body slide together.

[0009] The baffle divides the cavity of the core into a first cavity and a second cavity. The side of the core is provided with a first oil hole and a second oil hole. The first oil hole is connected to the first cavity and the first cavity is connected to the oil inlet. The second oil hole is connected to the second cavity and the second cavity is connected to the oil outlet.

[0010] Under the action of external force, the core moves forward relative to the first connector body by overcoming the elastic force of the spring, and the first oil hole and the second oil hole are connected; when the external force is removed, the core moves in the opposite direction relative to the first connector body under the action of the elastic force of the spring, and the first oil hole or the second oil hole is cut off.

[0011] Preferably, the inner wall of the first connector body is provided with an oil groove that communicates with the first oil hole;

[0012] Under the action of external force, the core moves forward relative to the first connector body by overcoming the elastic force of the spring, and the second oil hole is connected to the oil groove; when the external force is removed, the core moves in the opposite direction relative to the first connector body under the action of the elastic force of the spring, and the second oil hole is disconnected from the oil groove.

[0013] Preferably, the interior of the first connector body is provided with a first oil passage and a second oil passage;

[0014] The first oil passage is arranged along the axial direction of the first joint body, and the second oil passage is arranged along the circumference of the first joint body. The first oil passage is connected to the oil injection port, and the second oil passage is connected to the first oil passage.

[0015] Preferably, a first sealing ring is provided between the first connector body and the second connector body;

[0016] The first sealing ring corresponds to the position of the second oil passage and is located on the outside of the second oil passage.

[0017] Preferably, the second connector body is provided with a contact switch inside for controlling the start of oil filling.

[0018] Preferably, the quick-connect oil filling connector also includes a flow sensor for detecting the amount of oil being added at the oil outlet.

[0019] Preferably, a retaining ring is provided inside the cavity of the first connector body, and the spring abuts against the retaining ring and the core body respectively.

[0020] Preferably, a second sealing ring is provided between the first connector body and the core body.

[0021] Preferably, the first oil hole and the second oil hole are arranged at equal intervals along the circumference of the core.

[0022] Preferably, the baffle and the core are an integrated structure.

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] As described above, this utility model discloses a quick-connect oil filling connector with a simple structure and convenient operation. During oil filling, only an external force is applied to overcome the spring's elasticity, causing the core to move forward relative to the first connector body, connecting the first and second oil holes. The oil injected through the filling port passes sequentially through the first cavity, the first oil hole, the oil groove, the second oil hole, and the second cavity, finally reaching the outlet. When the spring is compressed, the filling port is connected to the oil passage inside the first connector body. The oil pressure generated during filling automatically tightens the first connector body, ensuring it does not detach from the second connector body, thus improving the safety and stability of the connection. Oil filling begins when the first connector body touches the contact switch inside the second connector body. A built-in flow sensor monitors the oil volume. After oil filling is complete, the first connector body automatically resets under the spring's elasticity, meaning the core moves in the opposite direction relative to the first connector body, thus closing either the first or second oil hole. This effectively reduces reliance on manual operation, making the oil filling process more automated. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a cross-sectional view of the quick-connect oil filling connector in the oil filling state according to an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the quick-connect oil filling connector in its reset state according to an embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of the first connector body according to an embodiment of the present utility model;

[0029] Figure 4 This is a perspective view of the first connector body according to an embodiment of the present utility model;

[0030] Figure 5 This is a left view of the first connector body according to an embodiment of the present utility model;

[0031] Figure 6 This is a perspective view of the second connector body according to an embodiment of the present utility model;

[0032] Figure 7 This is a left view of the second connector body according to an embodiment of the present invention;

[0033] Figure 8 This is a front view of the core of an embodiment of the present utility model;

[0034] Figure 9 This is a cross-sectional view of the core of an embodiment of the present utility model;

[0035] Figure 10 The three-dimensional core of this utility model embodiment Figure 1 ;

[0036] Figure 11 The three-dimensional core of this utility model embodiment Figure 2 ;

[0037] Figure 12 This is a perspective view of the retaining ring according to an embodiment of the present utility model;

[0038] Wherein, 1-first connector body, 11-oil inlet, 12-oil passage, 121-first oil passage, 122-second oil passage, 13-oil trough, 2-second connector body, 21-oil outlet, 22-contact switch;

[0039] 3-Core, 31-Baffle, 321-First cavity, 322-Second cavity, 331-First oil hole, 332-Second oil hole, 34-Allowing groove, 4-Spring, 5-Retaining ring, 61-First sealing ring, 62-Second sealing ring. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0041] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0043] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] Example:

[0047] like Figures 1 to 12 As shown, the quick-connect oil filling connector of this embodiment includes a first connector body 1, a second connector body 2, and a core body 3.

[0048] The first connector body 1 and the second connector body 2 are hollow structures. The first connector body 1 is provided with an oil inlet 11, and the second connector body 2 is provided with an oil outlet 21. The oil inlet 11 is connected to the oil supply pipeline, and the oil outlet 21 is connected to the equipment that needs to be injected with oil. One end of the first connector body 1 is embedded in the cavity of the second connector body 2.

[0049] The core 3 is disposed within the cavity of the first connector body 1. One end of the core 3 abuts against the second connector body 2, and a spring 4 is disposed between the other end of the core 3 and the first connector body 1. The core 3 and the first connector body 1 are in sliding engagement, and specifically, the core 3 can move forward relative to the first connector body 1 (along...). Figure 1 (as shown) moving left in the horizontal direction and moving in the opposite direction (along) Figure 1 (As shown, it moves to the right in the horizontal direction). In this embodiment, a retaining ring 5 is provided in the cavity of the first connector body 1. The retaining ring 5 limits the movement of the spring 4. The spring 4 abuts against both the retaining ring 5 and the core 3, that is, one end of the spring 4 abuts against the retaining ring 5, and the other end of the spring 4 abuts against the core 3. When the oil filling connector is in the oil filling state, the spring 4 is in the compressed state. When the oil filling ends, under the elastic force of the spring 4 restoring its deformation, the core 3 moves in the opposite direction relative to the first connector body 1, so that the oil filling connector automatically switches to the reset state.

[0050] Baffle 31 divides the cavity of core 3 into a first cavity 321 and a second cavity 322. In this embodiment, baffle 31 and core 3 are an integral structure. A first oil hole 331 and a second oil hole 332 are provided on the side of core 3. In this embodiment, the first oil hole 331 is located on one side of baffle 31 and communicates with the first cavity 321, which in turn communicates with the oil inlet 11. The second oil hole 332 is located on the other side of baffle 31 and communicates with the second cavity 322, which in turn communicates with the oil outlet 21. In this embodiment, the first oil hole 331 and the second oil hole 332 are arranged at equal intervals along the circumference of core 3, making the oil pressure in the oil inlet more uniform.

[0051] The inner wall of the first connector body 1 is provided with an oil groove 13 communicating with the first oil hole 331. In this embodiment, the oil groove 13 is preferably an annular oil groove. Under the action of external force, the core body 3 moves forward relative to the first connector body 1, overcoming the elastic force of the spring 4, and the second oil hole 332 communicates with the oil groove 13; when the external force is removed, under the action of the elastic force of the spring 4, the core body 3 moves in the opposite direction relative to the first connector body 1, and the second oil hole 332 disconnects from the oil groove 13. It should be noted that the oil filling connector of this utility model is not limited to the above-mentioned preferred arrangement. Closing the first oil hole or the second oil hole can disconnect the communication between the oil filling port 11 and the oil outlet 21.

[0052] In this embodiment, the position of the first connector body 1 relative to the core body 3 determines whether the second oil hole 332 can communicate with the first oil hole 331 through the oil groove 13, and also determines whether the oil inlet 11 and the oil outlet 21 are connected. Figure 1 In the oil filling state shown, the first oil hole 331 and the second oil hole 332 are connected through the oil groove 13 between the inner cavity of the first connector body 1 and the core body 3, that is, the first oil hole 331 and the second oil hole 332 are connected. At this time, the oil injected from the oil filling port 11 can reach the oil outlet 21. Figure 2 In the reset state shown, the oil inlet connector has the second oil hole 332 in contact with the inner side of the first connector body 1. The second oil hole 332 cannot connect to the oil groove 13, and the first oil hole 331 and the second oil hole 332 cannot connect. Since the second oil hole 332 is in the cut-off state, the oil injected from the oil inlet 11 cannot reach the oil outlet 21.

[0053] In this embodiment, the first connector body 1 is preferably made of a plastic material. An oil channel 12 is provided inside the first connector body 1. The spring 4 is compressed under external force, connecting the oil channel 12 to the oil inlet 11. Oil flows sequentially through the oil inlet 11, the first cavity 321, and the first oil hole 331 to the oil groove 13 between the first connector body 1 and the core 3, and is finally injected into the oil channel 12. Specifically, the oil channel 12 includes a first oil channel 121 and a second oil channel 122. The first oil channel 121 is arranged axially along the first connector body 1, and the second oil channel 122 is arranged circumferentially along the first connector body 1. The first oil channel 121 and the second oil channel 122 are connected. Under oil pressure, a tightening force is generated between the first connector body 1 and the second connector body 2. The first connector body 1 automatically tightens under oil pressure, ensuring a firm and reliable connection that is not easily detached, thus improving the safety and stability of the connection.

[0054] When oil needs to be injected, the core 3 moves forward relative to the first connector 1 under the action of external force, overcoming the elastic force of the spring 4. At this time, the first oil hole 331 and the second oil hole 332 are connected. After the oil injection is completed and the external force is removed, the oil passage 12 loses oil pressure, and the tension between the first connector 1 and the second connector 2 is lost. Under the action of the spring 4, the core 3 moves in the opposite direction relative to the first connector 1, causing the first oil hole 331 and the second oil hole 332 to be cut off. In this embodiment, when the first connector 1 is close to the second connector 2, the oil injection port 11 and the oil outlet 21 are connected, and oil can be quickly injected. The oil injection connector of this utility model can achieve quick connection without complicated installation and debugging process. After the oil injection is completed, the oil injection is stopped, and the first connector 1 automatically resets under the action of the spring 4, simplifying the operation process, reducing the dependence on manual operation, and making the oil injection operation easy and efficient.

[0055] In addition, to make the oil filling process more automated, the second connector body 2 in this embodiment is also provided with a contact switch 22 for controlling the start of oil filling. The first connector body 1 contacts the contact switch 22 to start the oil filling.

[0056] The quick-connect oil filling connector also includes a flow sensor for detecting the amount of oil being added at the oil outlet 21. For example... Figure 10 As shown, a clearance groove 34 is provided at one end of the core 3. The signal line of the flow sensor is preferably led out through the clearance groove 34 of the core 3 and the through hole opened on the second connector body 2. Of course, the signal line of the flow sensor is not limited to the arrangement of this embodiment and can also be led out from other positions. Setting a flow sensor can provide more accurate flow monitoring to ensure the accuracy of each oil filling.

[0057] To further prevent oil leakage, a first sealing ring 61 is provided between the first connector body 1 and the second connector body 2 in this embodiment, and a second sealing ring 62 is provided between the first connector body 1 and the core body 3. In this embodiment, the position of the first sealing ring 61 corresponds one-to-one with the position of the second oil passage 122 and is located on the outside of the second oil passage 122. When the oil is being filled, the second oil passage 122 expands due to oil pressure, and the pressure acts on the first sealing ring 61 through the side wall of the core body, which can achieve a better sealing effect.

[0058] The process of using the quick-connect oil filling connector in this embodiment is as follows:

[0059] The oil inlet 11 on the first connector body 1 is connected to the oil supply pipeline, and the oil outlet 21 on the second connector body 2 is connected to the oil nozzle of the engineering equipment.

[0060] When oil needs to be added, an external force is first applied to overcome the elastic force of the spring 4, causing the core 3 to move forward relative to the first connector 1. The first connector 1 then touches the contact switch 22, initiating oil filling. At this time, the spring 4 is compressed. The first oil hole 331 and the second oil hole 332 in the core 3 are connected along the circumferential direction through the oil groove 13. The oil inlet 11 is connected to the oil outlet 21. The oil injected from the oil inlet 11 will sequentially pass through the first cavity 321, the first oil hole 331, the oil groove 13, the second oil hole 332, and the second cavity 322, finally reaching the oil outlet 21. The oil in the oil supply line is then added to the oil nozzle of the engineering equipment through the oil filling connector. Simultaneously, the oil will also enter the first oil passage 121 and the second oil passage 122 inside the first connector 1, causing the first connector 1 to expand and generate a tightening force between it and the second connector 2, thereby maintaining the relative position of the first connector 1 and the second connector 2 and keeping the oil filling connector in the oil filling state.

[0061] The flow sensor monitors the amount of oil being added in real time. After the oil is added to the preset flow rate, the oil injection stops. The oil pressure in the first oil passage 121 and the second oil passage 122 disappears, and the tension between the first connector body 1 and the second connector body 2 is lost. Under the elastic force of the spring 4, the core body 3 moves in the opposite direction relative to the first connector body 1, so that the first oil hole 331 and the second oil hole 332 in the core body 3 are disconnected. At this time, the oil injection connector is in the reset state, and the oil injection port 11 and the oil outlet 21 are not connected, so oil cannot be added.

[0062] The present embodiment has now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the quick-connect oil filling connector of this utility model. Its structure is simple, operation is convenient, and it enables simple, efficient, and automated oil filling. During oil filling, only an external force needs to be applied to overcome the elasticity of the spring 4. The core 3 moves forward relative to the first connector body 1, connecting the first oil hole 331 with the second oil hole 332. The oil injected from the oil filling port 11 will sequentially pass through the first cavity 321, the first oil hole 331, the oil groove 13, the second oil hole 332, and the second cavity 322, finally reaching the oil outlet 21. When the spring 4 is in a compressed state, the oil filling port 11 is connected to the oil passage inside the first connector body 1. The oil pressure generated during oil filling can automatically tighten the first connector body 1, ensuring that it will not detach from the second connector body 2, thereby improving the safety and stability of the connection. When the first connector body 1 touches the contact switch 22 inside the second connector body 2, oil injection begins. The built-in flow sensor can monitor the amount of oil injected. After the oil is injected, the first connector body 1 can automatically reset under the elastic force of the spring 4, that is, the core body 3 slides relative to the first connector body 1, thereby cutting off the first oil hole 331 and the second oil hole 332, effectively reducing the dependence on manual operation and making the oil injection process more automated.

[0063] Of course, the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A quick-connect oil filling connector, characterized in that, It includes a first connector body, a second connector body, and a core body; The first connector body and the second connector body adopt a hollow structure. The first connector body is provided with an oil inlet, and the second connector body is provided with an oil outlet. One end of the first connector body is embedded in the cavity of the second connector body. The core is set in the cavity of the first connector body. One end of the core abuts against the second connector body, and a spring is provided between the other end of the core and the first connector body. The core and the first connector body slide together. The baffle divides the cavity of the core into a first cavity and a second cavity. The side of the core is provided with a first oil hole and a second oil hole. The first oil hole is connected to the first cavity and the first cavity is connected to the oil inlet. The second oil hole is connected to the second cavity and the second cavity is connected to the oil outlet. Under the action of external force, the core moves forward relative to the first connector body by overcoming the elastic force of the spring, and the first oil hole and the second oil hole are connected; when the external force is removed, the core moves in the opposite direction relative to the first connector body under the action of the elastic force of the spring, and the first oil hole or the second oil hole is cut off.

2. The quick-connect oil filling connector according to claim 1, characterized in that, The inner wall of the first connector body is provided with an oil groove that communicates with the first oil hole; Under the action of external force, the core moves forward relative to the first connector body by overcoming the elastic force of the spring, and the second oil hole is connected to the oil groove; when the external force is removed, the core moves in the opposite direction relative to the first connector body under the action of the elastic force of the spring, and the second oil hole is disconnected from the oil groove.

3. The quick-connect oil filling connector according to claim 1, characterized in that, The first connector body has a first oil passage and a second oil passage inside; The first oil passage is arranged along the axial direction of the first joint body, and the second oil passage is arranged along the circumferential direction of the first joint body. The first oil passage is connected to the oil injection port, and the second oil passage is connected to the first oil passage.

4. The quick-connect oil filling connector according to claim 3, characterized in that, A first sealing ring is provided between the first connector body and the second connector body; The first sealing ring corresponds to the position of the second oil passage and is located on the outside of the second oil passage.

5. The quick-connect oil filling connector according to claim 1, characterized in that, The second connector body is equipped with a contact switch inside for controlling the start of oil filling.

6. The quick-connect oil filling connector according to claim 1, characterized in that, The quick-connect oil filling connector also includes a flow sensor for detecting the amount of oil being added at the outlet.

7. The quick-connect oil filling connector according to claim 1, characterized in that, A retaining ring is provided inside the cavity of the first connector body, and the spring abuts against the retaining ring and the core body respectively.

8. The quick-connect oil filling connector according to claim 1, characterized in that, A second sealing ring is provided between the first connector body and the core body.

9. The quick-connect oil filling connector according to claim 1, characterized in that, The first oil hole and the second oil hole are arranged at equal intervals along the circumference of the core.

10. The quick-connect oil filling connector according to claim 1, characterized in that, The baffle and the core are an integrated structure.

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