Self-locking fluid connector

Abstract

The utility model discloses a self-locking fluid connector which comprises a valve body, a handle and a self-locking assembly, a ball valve is arranged in the valve body, and a valve ball is connected with the handle through a rotating shaft; the self-locking assembly comprises a telescopic rod, an L-shaped lock pin and a first spring. A pin groove is formed in the rotating shaft, corresponds to the closing position of the handle and is connected with the L-shaped lock pin in an inserted mode. The handle is provided with a limiting sliding column extending into the valve body, the limiting sliding column corresponds to the opening position of the handle, and the limiting sliding column abuts against the L-shaped lock pin to form axial limiting on the telescopic rod. According to the self-locking type fluid connector, when the two valve bodies are not connected, the handle can be locked, and the risk of touching the handle by mistake is reduced; in the state that the two valve bodies are connected and the flow channels are opened, the two fluid connectors cannot rotate to be disconnected, and fluid leakage is prevented.

Description

Technical Field

[0001] This utility model relates to a self-locking fluid connector. Background Technology

[0002] A fluid connector is a specially designed connection device intended to ensure that fluids can flow smoothly through pipes without being obstructed by the presence of the fluid connector.

[0003] However, an existing type of sealed fluid connector has the following drawbacks due to the lack of a telescopic pin interlocking structure:

[0004] 1. The ability to open the flow channel by operating the handle when the two fluid connectors are not connected increases the risk of accidental handle operation.

[0005] 2. Even when two fluid connectors are connected and the flow channels are open, the two fluid connectors can still be rotated apart, causing fluid leakage. Summary of the Invention

[0006] The purpose of this utility model is to provide a self-locking fluid connector, including a valve body, a handle, and a self-locking assembly. The front end of the valve body is a mating surface. A ball valve for controlling the flow path opening and closing is provided inside the valve body. The ball valve is fixedly connected to the handle via a rotating shaft. The handle is located outside the valve body. The self-locking assembly includes a telescopic rod, an L-shaped locking pin, and a first spring. The valve body has a mounting cavity and a locking hole. One end of the L-shaped locking pin is fixedly mounted on the telescopic rod. The telescopic rod and the L-shaped locking pin are slidably disposed within the mounting cavity along the axial direction of the telescopic rod. The front end of the telescopic rod is a frustum-shaped head. The truncated cone head penetrates the mating surface and extends outward. The arc surface of the truncated cone head is adapted to the lock hole. The rear end of the telescopic rod is connected to a first spring. A pin groove is provided on the rotating shaft, which corresponds to the closed position of the handle. The pin groove is inserted into the other end of the L-shaped locking pin. The bottom surface of the handle is provided with a limiting slide post that extends into the valve body. A slide groove matching the rotation trajectory of the handle is provided on the valve body. The limiting slide post is movably disposed in the slide groove, which corresponds to the open position of the handle. The limiting slide post abuts against the L-shaped locking pin to form an axial limit on the telescopic rod.

[0007] Preferably, the slide is arc-shaped, and one end of the slide located at the handle open position is connected to the mounting cavity. The slide, mounting cavity, and lock hole are not connected to the flow channel.

[0008] Preferably, there are two valve bodies arranged symmetrically on the left and right. The mating surfaces of the valve bodies are provided with snap-fit ​​parts, and the rear ends of the valve bodies are provided with pipe joints. The two valve bodies are detachably connected through the snap-fit ​​parts, and the arc surface of the truncated cone head is inserted into the locking hole of the mating valve body.

[0009] Preferably, the snap-fit ​​part is provided with a buckle and a slot that cooperate with each other, the slots and buckles of the two valve bodies are correspondingly arranged, and the mating surface of the valve body is provided with a sealing ring.

[0010] Preferably, a locking mechanism is provided between the valve body and the handle. The locking mechanism includes a locking bead, a second spring, and a button. The locking bead is slidably connected to the handle and is disposed on the handle. The valve body also has a first locking groove and a second locking groove, which correspond to the open and closed positions of the handle, respectively. The first locking groove and the second locking groove cooperate with the locking bead. The button is slidably mounted on the handle and has a clearance groove for accommodating the locking bead. The two ends of the second spring are respectively connected to the button and the handle, and the second spring is located inside the handle.

[0011] The advantages and beneficial effects of this utility model are as follows: It provides a self-locking fluid connector. When the two valve bodies are not connected, the L-shaped locking pin is inserted into the pin groove to limit the rotation of the shaft, thereby locking the handle and reducing the risk of accidental contact with the handle. When the two valve bodies are connected and the flow channel is open, the arc surface of the truncated cone head of the telescopic rod is inserted into the locking hole of the opposite valve body, preventing the two fluid connectors from rotating and disconnecting, thus preventing fluid leakage. Attached Figure Description

[0012] Figure 1 This is a partial cross-sectional side view of the valve body in the open position in this utility model.

[0013] Figure 2 This is a partial cross-sectional side view of the valve body in the closed position in this utility model.

[0014] Figure 3 This is a schematic diagram of the mating surface of the valve body in this utility model.

[0015] Figure 4 This is a top cross-sectional view of the valve body in the unconnected state in this utility model.

[0016] Figure 5 This is a top cross-sectional view of the two valve bodies in the present invention, showing them pressed together.

[0017] Figure 6 This is a top cross-sectional view of the valve body in the open state of the flow channel in this utility model.

[0018] Figure 7 This is a cross-sectional side view of the locking mechanism of the valve body in this utility model. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0020] The specific technical solution of this utility model is as follows:

[0021] like Figures 1 to 3 As shown, a self-locking fluid connector includes a valve body 1, a handle 2, and a self-locking assembly 3. The front end of the valve body 1 is a mating surface 11. A ball valve 12 for controlling the opening and closing of a flow channel 13 is provided inside the valve body 1. The ball valve 12 is fixedly connected to the handle 2 via a rotating shaft 121. The handle 2 is located outside the valve body 1. The self-locking assembly 3 includes a telescopic rod 31, an L-shaped locking pin 32, and a first spring 33. The valve body 1 has a mounting cavity 34 and a locking hole 35. One end of the L-shaped locking pin 32 is fixedly mounted on the telescopic rod 31. The telescopic rod 31 and the L-shaped locking pin 32 are slidably mounted in the mounting cavity 34 along the axial direction of the telescopic rod 31. The front end of the telescopic rod 31 is a frustum head 311. The truncated cone head 311 penetrates the mating surface 11 and extends outward. The arc surface 312 of the truncated cone head 311 is adapted to the lock hole 35. The rear end of the telescopic rod 31 is connected to a first spring 33. A pin groove 4 is provided on the rotating shaft 121. The pin groove 4 corresponds to the closed position of the handle 2. The pin groove 4 is inserted into the other end of the L-shaped locking pin 32. The bottom surface of the handle 2 is provided with a limiting slide pin 5 that extends into the valve body 1. A slide groove 51 matching the rotation trajectory of the handle 2 is provided on the valve body 1. The limiting slide pin 5 is movably disposed in the slide groove 51. The limiting slide pin 5 corresponds to the open position of the handle 2. The limiting slide pin 5 abuts against the L-shaped locking pin 32 to form an axial limit on the telescopic rod 31.

[0022] The aforementioned slide groove 51 is arc-shaped. One end of the slide groove 51 located in the open position of the handle 2 is connected to the mounting cavity 34. The slide groove 51, the mounting cavity 34, and the lock hole 35 are not connected to the flow channel 13.

[0023] Two valve bodies 1 are provided, and the two valve bodies 1 are arranged symmetrically from left to right. The mating surface 11 of the valve body 1 is provided with a snap-fit ​​part 6. The rear end of the valve body 1 is provided with a pipe connector 14. The two valve bodies 1 are detachably connected through the snap-fit ​​part 6. The arc surface 312 of the frustum head 311 is inserted into the locking hole 35 of the mating valve body 1.

[0024] The aforementioned snap-fit ​​part 6 is provided with a buckle 62 and a slot 61 that cooperate with each other. The slots 61 and buckles 62 of the two valve bodies 1 are correspondingly arranged, and the mating surface 11 of the valve body 1 is provided with a sealing ring 7.

[0025] like Figure 7 As shown, a locking mechanism 8 is provided between the valve body 1 and the handle 2. The locking mechanism 8 includes a locking bead 81, a second spring 83, and a button 82. The locking bead 81 is slidably connected to the handle 2 and is disposed on the handle 2. The valve body 1 also has a first locking groove 85 and a second locking groove 86. The first locking groove 85 and the second locking groove 86 correspond to the open and closed positions of the handle 2, respectively. The first locking groove 85 and the second locking groove 86 cooperate with the locking bead 81. The button 82 is slidably mounted on the handle 2. The button 82 is provided with a clearance groove 84 for accommodating the locking bead 81. The two ends of the second spring 83 are respectively connected to the button 82 and the handle 2. The second spring 83 is located inside the handle 2.

[0026] Specifically, the second spring 83 elastically drives the button 82 to move, causing the end of the button 82 to extend out of the handle 2. At this time, the clearance groove 84 and the locking bead 81 are misaligned, causing the button 82 to drive the locking bead 81 to move downward, so that the locking bead 81 can extend into the first locking groove 85 or the second locking groove 86 to lock the handle 2. When it is necessary to rotate the handle 2, the operator needs to press the button 82 to align the clearance groove 84 with the locking bead 81. Then, by rotating the handle 2, the locking bead 81 can move upward into the clearance groove 84. At this time, the handle 2 can be rotated to change the open or closed state, further avoiding the risk of accidental activation.

[0027] like Figure 4 As shown, when the two valve bodies 1 are not connected, the frustum head 312 of the telescopic rod 31 protrudes from the mating surface 11 of the valve body 1. At this time, the L-shaped locking pin 32 on the telescopic rod 31 is inserted into the pin groove 4 of the rotating shaft 121, which limits the rotation of the rotating shaft 121. Thus, the handle 2 is locked by the self-locking component 3 and cannot be moved, reducing the risk of accidentally touching the handle 2. At the same time, the locking bead 81 on the handle 2 is located on the second locking groove 86 of the valve body 1, and the handle 2 is locked a second time by the locking mechanism 8, further reducing the risk of accidentally touching the handle 2.

[0028] like Figure 5 As shown, when the two valve bodies 1 are pressed together, the truncated head 311 of the telescopic rod 31 is axially pushed into the mounting cavity 34 of the valve body 1, the first spring 33 is compressed and deformed, the L-shaped locking pin 32 is dislodged from the pin groove 4 of the rotating shaft 121, the self-locking assembly 3 releases the lock on the handle 2, but the locking mechanism 8 still locks the handle 2.

[0029] like Figure 6As shown, when the slots 61 and buckles 62 of the two valve bodies 1 are engaged in place by rotation, the truncated cone head 311 of the telescopic rod 31 is aligned with the locking hole 35 of the valve body 1. The rebound force of the first spring 33 pushes the telescopic rod 31 axially, so that the arc surface 312 of the truncated cone head 311 is inserted into the locking hole 35.

[0030] At this time, by pressing the button 82 on the handle 2, the second spring 83 is compressed and deformed, so that the clearance groove 84 is aligned with the locking bead 81. By rotating the handle 2, the locking bead 81 can be moved upward into the clearance groove 84, and the handle 2 is completely unlocked. The handle 2 moves to the open position, so that the first locking groove 85 is aligned with the locking bead 81. The rebound force of the second spring 83 resets the button 82, and the locking bead 81 moves between the first locking groove 85 and the handle 2, so that the handle 2 is locked in the open position. At the same time, the limiting slide 5 at the bottom of the handle 2 abuts against the L-shaped locking pin 32, thereby forming an axial limit on the telescopic rod 31. And since the arc surface 312 of the truncated cone head 311 of the telescopic rod 31 is located in the lock hole 35 of the valve body 1, the locking connection between the two valve bodies 1 is completed, so that the two valve bodies 1 cannot be rotated and disconnected, preventing fluid leakage.

[0031] like Figure 4 As shown, press button 82 on handle 2 to unlock locking mechanism 8, move handle 2 to the closed position, close flow channel 13, and move limiting slide 5 at the bottom of handle 2 along slide groove 51. Limiting slide 5 separates from L-shaped locking pin 32, releasing the axial limit on telescopic rod 31. Since the truncated cone head 311 of telescopic rod 31 has arc surface 312, during the rotational separation of the two valve bodies 1, the arc surface 312 of the truncated cone head 311 is squeezed and drives telescopic rod 31 into mounting cavity 34. First spring 33 is compressed and deformed again. When the two valve bodies 1 are completely separated, the rebound force of first spring 33 causes the truncated cone head 311 of telescopic rod 31 to protrude from the locking surface 11 of valve body 1. L-shaped locking pin 32 on telescopic rod 31 is inserted into pin groove 4 of rotating shaft 121, limiting the rotation of rotating shaft 121 and locking handle 2 in the closed position again.

[0032] The advantages and beneficial effects of this utility model are as follows: It provides a self-locking fluid connector. When the two valve bodies 1 are not connected, the L-shaped locking pin 32 is inserted into the pin groove 4 to limit the rotation of the rotating shaft 121, thereby locking the handle 2 and reducing the risk of accidental contact with the handle 2. When the two valve bodies 1 are connected and the flow channel 13 is open, the arc surface 312 of the frustum head 3111 of the telescopic rod 31 is inserted into the locking hole 35 of the opposite valve body 1, so that the two valve bodies 1 cannot be rotated to disconnect, thus preventing fluid leakage.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A self-locking fluid connector, characterized in that: The valve body includes a valve body, a handle, and a self-locking assembly. The front end of the valve body is a mating surface. The valve body has a valve ball inside for rotating to control the flow channel opening and closing. The valve ball is fixedly connected to the handle via a rotating shaft. The handle is located outside the valve body. The self-locking assembly includes a telescopic rod, an L-shaped locking pin, and a first spring. The valve body has a mounting cavity and a locking hole. One end of the L-shaped locking pin is fixedly mounted on the telescopic rod. The telescopic rod and the L-shaped locking pin are slidably mounted in the mounting cavity along the axial direction of the telescopic rod. The front end of the telescopic rod is a frustum head, which penetrates the mating surface and extends outward. The arc surface of the frustum head is adapted to the locking hole. The rear end of the telescopic rod is connected to the first spring. The rotating shaft has a pin groove, which corresponds to the closed position of the handle. The pin groove is inserted into the other end of the L-shaped locking pin. The bottom surface of the handle has a limiting slide pin that extends into the valve body. The valve body has a slide groove that matches the rotation trajectory of the handle. The limiting slide pin is movably disposed in the slide groove. The limiting slide pin corresponds to the open position of the handle. The limiting slide pin abuts against the L-shaped locking pin to form an axial limit on the telescopic rod.

2. The self-locking fluid connector according to claim 1, characterized in that, The slide is arc-shaped, and one end of the slide located at the handle opening position is connected to the mounting cavity. The slide, mounting cavity, and lock hole are not connected to the flow channel.

3. A self-locking fluid connector according to claim 2, characterized in that, The valve body is provided in two parts, which are arranged symmetrically on the left and right. The mating surface of the valve body is provided with a snap-fit ​​part, and the rear end of the valve body is provided with a pipe connector. The two valve bodies are detachably connected through the snap-fit ​​part, and the arc surface of the truncated cone head is inserted into the locking hole of the mating valve body.

4. A self-locking fluid connector according to claim 3, characterized in that, The snap-fit ​​part includes a buckle and a slot that cooperate with each other. The slots and buckles of the two valve bodies are correspondingly arranged, and the mating surfaces of the valve bodies are provided with sealing rings.

5. A self-locking fluid connector according to claim 4, characterized in that, A locking mechanism is provided between the valve body and the handle. The locking mechanism includes a locking bead, a second spring, and a button. The locking bead is slidably connected to the handle and is disposed on the handle. The valve body also has a first locking groove and a second locking groove, which correspond to the open and closed positions of the handle, respectively. The first locking groove and the second locking groove cooperate with the locking bead. The button is slidably mounted on the handle and has a clearance groove for accommodating the locking bead. The two ends of the second spring are respectively connected to the button and the handle, and the second spring is located inside the handle.

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