Tool-free T-shaped bolt

Abstract

The utility model relates to a tool-free T-shaped bolt which comprises a nut mechanism which comprises a nut body provided with a first flow channel in the axial direction. The ventilation mechanism comprises a valve body and a guide ball, the valve body is provided with a containing cavity, the valve body is provided with a second flow channel, a third flow channel and a fourth flow channel which are all communicated with the containing cavity, the first flow channel is communicated with the second flow channel, the guide ball is rotationally connected to the containing cavity, the guide ball is provided with a fifth flow channel, and the fifth flow channel is communicated with the third flow channel. One end of the fifth runner is communicated with the second runner, and the other end of the fifth runner can be communicated with the third runner or the fourth runner; and a rotating mechanism. By means of the arrangement, tool-free installation of the nut body can be achieved, and effective circulation and flow direction control of media are achieved by switching the flowing state or the flowing stopping state of the media in the third flow channel or the fourth flow channel.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and in particular to a tool-free T-bolt. Background Technology

[0002] Oil passage bolts are used to seal threaded through holes in the fuel, oil, water, and gas lines on an engine. Currently, oil passage bolts are usually used in conjunction with oil passage connectors. The oil passage connector has a cavity with a certain space inside. During use, the oil first enters this cavity and then enters the oil passage bolt through the oil passage hole.

[0003] In systems involving fluid transport, such as hydraulic, pneumatic, or chemical piping systems, oil passage bolts need to function as fluid channels. However, existing oil passage bolts not only require tools like wrenches for installation, but most also lack the ability to select flow paths. When it's necessary to change the fluid flow direction or switch to different transport paths, it often requires replacing the entire bolt or using complex external valves and piping. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the existing oil-filled bolts cannot be installed with tools and most of them do not have the function of flow channel selection, so as to provide a tool-free T-bolt.

[0005] To solve the above technical problems, this utility model provides a tool-free T-bolt, comprising:

[0006] A nut mechanism, comprising: a nut body having a first flow channel opened along the axial direction;

[0007] A ventilation mechanism includes: a valve body and a guide ball. The valve body has a receiving cavity. The valve body has a second flow channel, a third flow channel and a fourth flow channel that are all connected to the receiving cavity. The first flow channel and the second flow channel are connected. The guide ball is rotatably connected to the receiving cavity. The guide ball has a fifth flow channel. One end of the fifth flow channel is connected to the second flow channel and the other end can be connected to the third flow channel or the fourth flow channel.

[0008] The rotating mechanism includes a first pipe and a second pipe that are respectively connected to the first flow channel and the second flow channel and connected to both sides of the valve body.

[0009] In one embodiment of the present invention, the nut body includes a screw and a screw head, and the first flow channel passes through the screw and the screw head.

[0010] In one embodiment of this utility model, the diameter of the screw head is greater than the diameter of the screw rod, the screw head is provided with a mounting groove, the inner diameter of the mounting groove is greater than the inner diameter of the first flow channel, and the mounting groove is provided with a first internal thread.

[0011] In one embodiment of the present invention, the valve body has a hollow protrusion extending toward the nut body on the side thereon, the protrusion being adapted to the mounting groove and having a first external thread adapted to the first internal thread.

[0012] In one embodiment of the present invention, a stepped surface is formed between the bottom surface of the mounting groove and the first internal thread, and the size of the protrusion is adapted to the size of the stepped surface.

[0013] In one embodiment of this utility model, the third flow channel and the fourth flow channel are respectively opened on opposite sides of the valve body in the horizontal direction, and the guide ball is rotatably connected to the receiving cavity in the horizontal direction.

[0014] In one embodiment of the present invention, the fifth flow channel includes a first connecting portion and a second connecting portion. The first connecting portion is opened in a vertical direction and its bottom is connected to the top of the second flow channel. The second connecting portion is opened in a horizontal direction. One end of the second connecting portion is connected to the first connecting portion and the other end can be connected to the third flow channel or the fourth flow channel.

[0015] In one embodiment of the present invention, the ends of the third flow channel and the fourth flow channel are provided with second internal threads, and the first pipe and the second pipe are respectively provided with second external threads adapted to the third flow channel and the fourth flow channel.

[0016] In one embodiment of this utility model, the ends of the first pipe and the second pipe are both provided with a third internal thread and / or a third external thread.

[0017] In one embodiment of the present invention, the valve body is provided with a handle, the handle is rotatably connected to the valve body in a horizontal direction, and the end of the handle passes through the valve body and extends to the receiving cavity and is connected to the guide ball.

[0018] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0019] The tool-free T-bolt of this utility model allows the medium to flow in through the first flow channel of the nut body. The medium then enters the second flow channel within the valve body and subsequently the fifth flow channel within the guide ball. By rotating the guide ball within the valve body, the input end of the fifth flow channel is always connected to the second flow channel, while its output end can connect to the third or fourth flow channel, or neither. By increasing the lever arm through the first and second pipes, a labor-saving effect is achieved by using less force to reach the required torque. This enables tool-free installation of the nut body. By switching between the state of the medium flowing or stopping in the third or fourth flow channel, effective flow and flow direction control of the medium are realized. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a structural schematic diagram of the T-bolt of this utility model;

[0022] Figure 2 This is a schematic diagram of the valve body and guide ball of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the guide ball of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the nut body of this utility model.

[0025] Explanation of reference numerals in the accompanying drawings: 1. Screw; 2. Screw head; 3. Valve body; 4. First pipe; 5. Second pipe; 6. Handle; 7. Guide ball; 8. Fifth flow channel; 81. First connecting part; 82. Second connecting part; 9. Second flow channel; 10. Protrusion; 11. First external thread; 12. Second internal thread; 13. Third flow channel; 14. Fourth flow channel; 16. First flow channel; 17. Stepped surface; 18. First internal thread. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Example

[0028] Reference Figures 1-4 As shown, this utility model provides a tool-free T-bolt.

[0029] include:

[0030] A nut mechanism, comprising: a nut body having a first flow channel 16 axially provided therein;

[0031] A ventilation mechanism includes: a valve body 3 and a guide ball 7. The valve body 3 has a receiving cavity. The valve body 3 has a second flow channel 9, a third flow channel 13 and a fourth flow channel 14, which are all connected to the receiving cavity. The first flow channel 16 and the second flow channel 9 are connected. The guide ball 7 is rotatably connected to the receiving cavity. The guide ball 7 has a fifth flow channel 8. One end of the fifth flow channel 8 is connected to the second flow channel 9 and the other end can be connected to the third flow channel 13 or the fourth flow channel 14.

[0032] The rotating mechanism includes a first pipe 4 and a second pipe 5 that are respectively connected to the first flow channel 16 and the second flow channel 9 and connected to both sides of the valve body 3.

[0033] The tool-free T-bolt of this utility model allows the medium to flow in through the first flow channel 16 of the nut body. The medium then enters the second flow channel 9 inside the valve body 3 through the first flow channel 16, and then enters the fifth flow channel 8 inside the guide ball 7 through the second flow channel. By rotating the guide ball 7 inside the valve body 3, the input end of the fifth flow channel 8 is always connected to the second flow channel 9, while its output end can be connected to the third flow channel 13 or the fourth flow channel 14, or neither. By increasing the lever arm through the first pipe 4 and the second pipe 5, the required torque can be achieved with a smaller force, thus enabling tool-free installation of the nut body. By switching between the state of the medium flowing or stopping in the third flow channel 13 or the fourth flow channel 14, effective flow and flow direction control of the medium are achieved.

[0034] In this embodiment, the medium flows from the first flow channel 16. In some embodiments, the medium flows in the opposite direction, i.e., it flows out from the first flow channel 16. The nut body includes a screw 1 and a screw head 2, and the first flow channel 16 passes through the screw 1 and the screw head 2. The screw 1 is a slender cylinder with threads machined on its outer surface for mating with corresponding threaded holes to achieve the fastening function of a bolt. In this embodiment, the screw 1 is threadedly connected to the threaded hole of the device that requires medium output or input.

[0035] In this embodiment, the flow channel forms an oil passage, thereby forming an oil-passing bolt, and the first pipe and the second pipe together with the bolt form a T-bolt.

[0036] Reference Figure 1 As shown, the diameter of the screw head 2 is greater than the diameter of the screw rod 1. The screw head 2 has an installation groove, the inner diameter of which is greater than the inner diameter of the first flow channel 16. The installation groove has a first internal thread 18.

[0037] Reference Figure 2 As shown, the valve body 3 has a hollow protrusion 10 extending from the side near the nut body. The protrusion 10 is adapted to the mounting groove and has a first external thread 11 adapted to the first internal thread 18. After the medium flows in from the first flow channel 16 of the nut body, it passes through the mounting groove and enters the hollow channel of the protrusion 10, and then enters the second flow channel 9 of the valve body 3. The adaptation of the protrusion 10 to the mounting groove and the threaded connection ensure the sealing and stability of the medium during this transmission process, and can prevent medium leakage.

[0038] Reference Figure 4As shown, a stepped surface 17 is formed between the bottom surface of the mounting groove and the first internal thread 18, and the size of the protrusion 10 matches the size of the stepped surface 17. The sealing interface formed by the fit between the protrusion 10 and the stepped surface 17 can prevent the medium from leaking from the connection between the mounting groove and the protrusion 10. Furthermore, the stepped surface 17 provides axial positioning for the protrusion 10, making the connection position between the valve body 3 and the nut body more accurate, so that the first flow channel 16 and the second flow channel 9 can be accurately connected, avoiding obstruction of medium flow or pressure loss due to installation deviation.

[0039] Reference Figure 1 As shown, the third flow channel 13 and the fourth flow channel 14 are respectively opened on opposite sides of the valve body 3 in the horizontal direction, and the guide ball 7 is rotatably connected to the receiving cavity in the horizontal direction. When the medium enters the fifth flow channel 8 of the guide ball 7 from the first flow channel 16 through the second flow channel 9, the rotation of the guide ball 7 will determine the flow direction of the medium. Since the guide ball 7 rotates in the horizontal direction, when it is necessary to guide the medium to the third flow channel 13, the guide ball 7 is rotated to the corresponding position so that the fifth flow channel 8 of the guide ball 7 is aligned and connected with the third flow channel 13, and the medium will flow from the fifth flow channel 8 into the third flow channel 13, and then be transported to the corresponding component through the first pipe 4 connected to the third flow channel 13. Conversely, if it is necessary to guide the medium to the fourth flow channel 14, the guide ball 7 is rotated to another corresponding position so that the fifth flow channel 8 is aligned and connected with the fourth flow channel 14, and the medium flows into the fourth flow channel 14, and then is transported to the designated component through the second pipe 5 connected to the fourth flow channel 14.

[0040] Reference Figure 2 , Figure 3As shown, the fifth flow channel 8 includes a first connecting portion 81 and a second connecting portion 82. The first connecting portion 81 is vertically oriented and its bottom is connected to the top of the second flow channel 9. The second connecting portion 82 is horizontally oriented, with one end connected to the first connecting portion 81 and the other end connected to either the third flow channel 13 or the fourth flow channel 14. The medium first enters the first connecting portion 81 and the second connecting portion 82 through the first flow channel 16 and the second flow channel 9. If it is necessary to guide the medium to the third flow channel 13, the guide ball 7 is rotated to a suitable position, connecting the other end of the second connecting portion 82 to the third flow channel 13. The medium flows from the first connecting portion 81 into the second connecting portion 82, then through the second connecting portion 82 into the third flow channel 13, and finally is transported to the corresponding component through the first pipe 4 connected to the third flow channel 13. Conversely, if it is necessary to guide the medium to the fourth flow channel 14, the guide ball 7 is rotated to another position, connecting the other end of the second connecting portion 82 to the fourth flow channel 14. The medium flows from the second connecting part 82 into the fourth flow channel 14 along the corresponding path, and then is delivered to the designated component through the second pipe 5 connected to the fourth flow channel 14. If it is necessary to interrupt the flow of the channel, the end of the second connecting part 82 is aligned with the inner wall of the receiving cavity and is not connected to the third flow channel 13 or the fourth flow channel 14, thereby closing the valve body 3.

[0041] Reference Figure 2 As shown, the ends of the third flow channel 13 and the fourth flow channel 14 are each provided with a second internal thread 12, and the first pipe 4 and the second pipe 5 are respectively provided with second external threads adapted to the third flow channel 13 and the fourth flow channel 14. This facilitates tool-free installation of the first pipe 4 and the second pipe 5. When the external threads of the first pipe 4 and the second pipe 5 are screwed into the internal threads of the third flow channel 13 and the fourth flow channel 14, friction and extrusion forces are generated between the thread teeth, thereby achieving a tight connection. This connection method has self-locking properties and can maintain the stability of the connection under certain external forces. In terms of sealing, the threaded connection plays an important role. When the threads are tightly engaged, the tiny gaps between the thread teeth are filled, forming a sealing effect.

[0042] Both the first pipe 4 and the second pipe 5 have a third internal thread and / or a third external thread at their ends. This facilitates connection to external equipment requiring media flow. In this embodiment, because the screw 1 is relatively long and rotates a large number of times, and because the first pipe 4 and the second pipe 5 are structurally symmetrical, the screw 1 can be rotated a maximum of 180° before installation to achieve overall spiral installation, and installation can be achieved without affecting the mating angle of the first pipe 4 and the second pipe 5. Based on this, to ensure sealing, sealant can be applied to the thread surface or a gasket can be used. The maximum deformation range of the gasket is not less than the axial displacement of the screw 1 during half a rotation, to eliminate the influence of screw 1 deformation. The gasket is fitted onto the screw 1 and located below the screw head 2. The sealant can fill the tiny gaps between the threads to prevent media leakage; the gasket can form an elastic sealing layer at the connection point, enhancing the sealing effect.

[0043] Reference Figures 1-2 As shown, the valve body 3 is equipped with a handle 6, which is rotatably connected to the valve body 3 in a horizontal direction. The end of the handle 6 passes through the valve body 3 and extends into the receiving cavity, connecting with the guide ball 7. During the operation of the tool-less T-bolt, the operator controls the flow direction of the medium by holding and rotating the handle 6. When it is necessary to change the flow direction of the medium, the operator applies external force to rotate the handle 6, causing the handle 6 to rotate horizontally around its axis of rotation. Since the handle 6 is connected to the guide ball 7, the rotation of the handle 6 will cause the guide ball 7 to rotate synchronously within the receiving cavity of the valve body 3.

[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A tool-free T-bolt, characterized in that, include: A nut mechanism, comprising: a nut body having a first flow channel opened along the axial direction; A ventilation mechanism includes: a valve body and a guide ball. The valve body has a receiving cavity. The valve body has a second flow channel, a third flow channel and a fourth flow channel that are all connected to the receiving cavity. The first flow channel and the second flow channel are connected. The guide ball is rotatably connected to the receiving cavity. The guide ball has a fifth flow channel. One end of the fifth flow channel is connected to the second flow channel and the other end can be connected to the third flow channel or the fourth flow channel. The rotating mechanism includes a first pipe and a second pipe that are respectively connected to the first flow channel and the second flow channel and connected to both sides of the valve body.

2. The tool-free T-bolt according to claim 1, characterized in that: The nut body includes a screw and a screw head, and the first flow channel passes through the screw and the screw head.

3. The tool-free T-bolt according to claim 2, characterized in that: The diameter of the screw head is larger than the diameter of the screw rod. The screw head has a mounting groove with an inner diameter larger than the inner diameter of the first flow channel. The mounting groove has a first internal thread.

4. A tool-free T-bolt according to claim 3, characterized in that: The valve body has a hollow protrusion extending from the side near the nut body. The protrusion is adapted to the mounting groove and has a first external thread adapted to the first internal thread.

5. A tool-free T-bolt according to claim 4, characterized in that: A stepped surface is formed between the bottom surface of the mounting groove and the first internal thread, and the size of the protrusion matches the size of the stepped surface.

6. A tool-free T-bolt according to claim 1, characterized in that: The third and fourth flow channels are respectively opened on opposite sides of the valve body in the horizontal direction, and the guide ball is rotatably connected to the receiving cavity in the horizontal direction.

7. A tool-free T-bolt according to claim 1, characterized in that: The fifth flow channel includes a first connecting portion and a second connecting portion. The first connecting portion is opened vertically and its bottom is connected to the top of the second flow channel. The second connecting portion is opened horizontally, and one end of the second connecting portion is connected to the first connecting portion and the other end can be connected to the third or fourth flow channel.

8. A tool-free T-bolt according to claim 1, characterized in that: The ends of the third and fourth flow channels are provided with second internal threads, and the first and second pipes are respectively provided with second external threads adapted to the third and fourth flow channels.

9. A tool-free T-bolt according to claim 1, characterized in that: The ends of both the first and second pipes are provided with a third internal thread and / or a third external thread.

10. A tool-free T-bolt according to claim 1, characterized in that: The valve body is provided with a handle, which is rotatably connected to the valve body in a horizontal direction. The end of the handle passes through the valve body and extends into the receiving cavity to be connected to the guide ball.

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