A portable stainless steel fastener

Abstract

The present application relates to the technical field of fasteners, and specifically discloses a portable stainless steel fastener, comprising: a bolt, wherein the bolt comprises a screw rod and a head, wherein the screw rod comprises a first threaded section; a first nut, wherein the first nut is threadedly connected to the first threaded section; and a sliding cylinder, wherein the sliding cylinder is used to prevent the first nut from falling off the bolt in an unfastened state, wherein the sliding cylinder is sleeved on the outside of the first threaded section, and wherein the sliding cylinder is located above the first nut. By arranging the sliding cylinder, when transporting and conveying the fastener, the sliding cylinder is first sleeved on the bolt, and then the first nut is connected to the bolt, so that the entire fastener is connected as a whole, and the fastener will not be dispersed during operations such as transport and conveying, thereby achieving the purpose of improving the portability of the fastener.

Description

Technical Field

[0001] The present application relates to the technical field of fasteners, and in particular to a portable stainless steel fastener. Background Art

[0002] Stainless steel fasteners, as important connecting parts of mechanical equipment, occupy an important scope of use in the industrial field.

[0003] Fasteners generally consist of two parts: bolts and nuts. When using fasteners, the bolts pass through the through holes on the equipment and the parts to be fastened placed on the equipment, and then the nut is connected to the bolt thread so that the nut, equipment and bolt head are tightly together, thereby achieving a fastened connection between the equipment and the parts to be fastened.

[0004] However, when not fastened, the fastener is divided into two independent parts, the bolt and the nut, which are easily separated during transportation, delivery, etc., resulting in the inability to find matching parts, thereby making the fastener unusable. Therefore, the stainless steel fasteners in the prior art are not very portable. Summary of the invention

[0005] The present application provides a portable stainless steel fastener, which solves the problem that the fastener in the prior art is divided into two independent parts, the bolt and the nut, which are easily separated during operations such as transportation and delivery, resulting in the inability to find matching parts, thereby making the fastener unusable. Therefore, the technical problem that the stainless steel fastener in the prior art is not portable is solved by connecting the entire fastener into one piece, so that the fastener will not be separated during operations such as transportation and delivery, thereby achieving the purpose of improving the portability of the fastener.

[0006] The present application provides a portable stainless steel fastener, comprising:

[0007] A bolt, the bolt comprising a screw rod and a head, the screw rod comprising a first threaded section;

[0008] a first nut threadably connected to the first thread segment; and

[0009] A sliding cylinder is used to prevent the first nut from falling off the bolt in an unfastened state. The sliding cylinder is sleeved on the outside of the first threaded section and is located above the first nut.

[0010] Furthermore, the sliding cylinder is a round tube structure with open ends, the inner diameter of the sliding cylinder is larger than the diameter of the screw, and the outer diameter of the sliding cylinder is larger than the outer diameter of the first nut;

[0011] In the tightened state, the sliding cylinder is clamped by the device to be tightened and the upper end of the first nut;

[0012] In an unfastened state, the sliding cylinder is clamped by the head and the first nut, so that the first nut is in a fastened state, preventing the first nut from falling off, thereby achieving portability of the fastener.

[0013] Furthermore, it also includes a second nut, wherein the second nut is threadedly connected to the first thread segment;

[0014] In an unfastened state, the sliding cylinder, the first nut, and the second nut are sequentially arranged from top to bottom and closely attached to the head;

[0015] In the tightened state, the first nut, the sliding cylinder, and the second nut are arranged in sequence from top to bottom and are tightly attached to the device.

[0016] Furthermore, the screw rod further comprises a first smooth section, the first smooth section is located above the first threaded section, and the length of the first smooth section is equivalent to the depth of a through hole on the device for fastener connection.

[0017] Furthermore, the screw rod further comprises a second smooth section and a second threaded section, the second smooth section is located below the first threaded section, and the second threaded section is located below the second smooth section;

[0018] In a tightened state, the first nut is located in the first threaded section, the sliding cylinder is located in the second smooth section, and the second nut is located in the second threaded section;

[0019] In an unfastened state, the sliding cylinder is located in the first smooth section, the first nut is located in the first threaded section, and the sliding cylinder is clamped by the head and the first nut, the second nut is located in the first threaded section, and the second nut is tightly attached to the first nut.

[0020] Further, the diameters of the first smooth section, the first threaded section and the second smooth section are the same, and the diameter of the second threaded section is smaller than the diameter of the first smooth section;

[0021] The first nut is matched with the first thread segment, and the second nut is matched with the second thread segment;

[0022] In an unfastened state, the sliding cylinder and the first nut are located on the first threaded section, and the sliding cylinder is located above the first nut and is in close contact with the head, and the second nut is located on the second threaded section and is in close contact with the lower end of the second smooth section;

[0023] In the tightened state, the first nut is located on the first threaded section and is tightly attached to the device, the sliding cylinder is located outside the second smooth section, and the lower end of the sliding cylinder extends to the second threaded section, and the second nut is located on the second threaded section and is tightly attached to the sliding cylinder.

[0024] Furthermore, the side surfaces of the first smooth section and the first threaded section are provided with first sliding grooves, and the inner wall of the sliding cylinder is provided with sliding bars, and the sliding bars correspond to the first sliding grooves;

[0025] A second sliding groove is provided on the side of the second smooth section, and the second sliding groove is connected to the first sliding groove. A third sliding groove is provided on the side of the second threaded section, and the third sliding groove is connected to the second sliding groove. Both sides of the bottom of the third sliding groove extend outward to form a trumpet-shaped guide groove.

[0026] Furthermore, a first guide rod is connected to the lower end of the second threaded section, and the first guide rod is in the shape of an inverted frustum to facilitate the first nut and the second nut to enter the second threaded section.

[0027] Furthermore, a second guide rod is connected between the second smooth section and the second threaded section, and the second guide rod is in the shape of an inverted frustum to facilitate the first nut to enter the second smooth section.

[0028] Further, the lower part of the second nut is connected to a second inner cylinder, the outer periphery of the second inner cylinder is rotatably provided with a second outer cylinder, the side surface of the second outer cylinder is connected to a second slide rod, and the end of the second slide rod is connected to a second sliding end head;

[0029] A second guide column is connected between the second guide rod and the second threaded section, a second guide slot is provided on the side of the second guide column, a second side wall slot is provided on the slot wall of the second guide slot, the second guide slot is used to accommodate the end of the second slide rod, the second side wall slot is used to accommodate the second sliding end, the width of the second side wall slot gradually decreases from the bottom to the middle, the width of the second side wall slot is the same from the middle to the top and is adapted to the second sliding end.

[0030] The technical solution provided by this application has at least the following technical effects or advantages:

[0031] Since the present invention is provided with a sliding cylinder, when the fastener is transported and delivered, the sliding cylinder is firstly put on the bolt, and then the first nut is connected to the bolt, so that the entire fastener is connected as a whole, and the fastener will not be scattered during operations such as transport and delivery, thereby achieving the purpose of improving the portability of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of the portable stainless steel fastener in Example 1 of the present application;

[0033] Figure 2 It is a cross-sectional schematic diagram of the portable stainless steel fastener in Example 1 of the present application;

[0034] Figure 3 This is a schematic diagram of the overall structure of the portable stainless steel fastener in Example 2 of the present application;

[0035] Figure 4 It is a cross-sectional schematic diagram of the portable stainless steel fastener in Example 2 of the present application;

[0036] Figure 5 This is a schematic diagram of the overall structure of the portable stainless steel fastener in Example 3 of the present application;

[0037] Figure 6 This is a cross-sectional schematic diagram of the portable stainless steel fastener in Example 3 of the present application;

[0038] Figure 7 This is a schematic diagram of the overall structure of the portable stainless steel fastener in Example 4 of the present application;

[0039] Figure 8 It is a cross-sectional schematic diagram of the portable stainless steel fastener in Example 4 of the present application;

[0040] Fig. 9 This is a schematic diagram of the overall structure of the portable stainless steel fastener in Example 5 of the present application;

[0041] Fig.10 It is a cross-sectional schematic diagram of the portable stainless steel fastener in Example 5 of the present application;

[0042] Fig.11 This is a cross-sectional schematic diagram from another perspective of the portable stainless steel fastener in Example 5 of the present application;

[0043] Fig.12 This is a partial structural schematic diagram of the portable stainless steel fastener in Example 5 of the present application.

[0044] In the figure: 1, bolt; 101, screw rod; 102, head; 1011, first threaded section; 1012, first smooth section; 1013, second smooth section; 1014, second threaded section;

[0045] 2. First nut; 3. Sliding cylinder; 4. Second nut; 5. First sliding groove; 6. Sliding bar; 7. Second sliding groove; 8. Third sliding groove; 9. Guide groove; 10. First guide rod; 11. Second guide rod; 12. Second inner cylinder; 13. Second outer cylinder; 14. Second sliding rod; 15. Second sliding end; 16. Second guide column; 17. Second guide groove; 18. Second side wall groove. DETAILED DESCRIPTION

[0046] The embodiment of the present application discloses a portable stainless steel fastener. Due to the provision of a sliding cylinder 3, when the fastener is transported and delivered, the sliding cylinder 3 is first inserted into the bolt 1, and then the first nut 2 is connected to the bolt 1, so that the entire fastener is connected as a whole, so that the fastener will not be dispersed during operations such as transportation and delivery, thereby achieving the purpose of improving the portability of the fastener.

[0047] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Embodiment 1:

[0048] Reference Figure 1 and Figure 2 The present invention provides a portable stainless steel fastener, comprising a bolt 1 and a first nut 2, wherein the first nut 2 is connected to the bolt 1. Specifically, the bolt 1 comprises a screw rod 101 and a head 102, wherein the screw rod 101 comprises a first threaded section 1011, and the first nut 2 is threadedly connected to the first threaded section 1011. When the fastener is used, the bolt 1 passes through a through hole on a device and a part to be fastened placed on the device, and then the first nut 2 is threadedly connected to the bolt 1, so that the first nut 2, the device and the head 102 are tightly attached together, thereby realizing a fastened connection between the device and the part to be fastened.

[0049] When not fastened, the fastener is divided into two parts, the bolt 1 and the first nut 2. These two parts are in a separated state. During operations such as transportation and delivery, they are easily dispersed, resulting in the inability to find matching parts, thereby rendering the fastener unusable. In order to avoid the above problems, generally when the fastener is not in use, the first nut 2 is directly threaded onto the bolt 1, thereby preventing the bolt 1 and the first nut 2 from being separated, so that the fastener will not be dispersed during operations such as transportation and delivery, thereby achieving the purpose of improving the portability of the fastener.

[0050] However, when the first nut 2 is threadedly connected to the bolt 1, although the first nut 2 will not fall off from the bolt 1 under the action of axial force, shaking often occurs during operations such as transportation and delivery, causing the first nut 2 to receive circumferential force, thereby causing the first nut 2 to move axially on the bolt 1, and there is always a risk of the first nut 2 falling off the bolt 1.

[0051] Based on the above problems, when the fastener is not in use, the first nut 2 is threadedly rotated until it is tightly attached to the head 102 to fix the first nut 2, so that the first nut 2 will no longer rotate under the action of a lighter circumferential force, thereby ensuring that the fastener will not fall off during operations such as transportation and delivery, thereby achieving the purpose of improving the portability of the fastener.

[0052] However, the above operation requires continuous rotation of the first nut 2 to move the first nut 2 from the bolt 1 to the top of the bolt 1 , which has a large stroke and is relatively complicated to operate.

[0053] Based on this, the fastener in this embodiment is further provided with a sliding cylinder 3, which is used to prevent the first nut 2 from falling off from the bolt 1 in an unfastened state. The sliding cylinder 3 is sleeved outside the first threaded section 1011, and the sliding cylinder 3 is located above the first nut 2. The sliding cylinder 3 is a round tube structure with open ends. The inner diameter of the sliding cylinder 3 is larger than the diameter of the screw 101, and the outer diameter of the sliding cylinder 3 is larger than the outer diameter of the first nut 2. In the fastened state, the sliding cylinder 3 is clamped by the device to be fastened and the upper end of the first nut 2. In the unfastened state, the sliding cylinder 3 is clamped by the head 102 and the first nut 2, so that the first nut 2 is in a fastened state to prevent the first nut 2 from falling off, thereby realizing the portability of the fastener.

[0054] By setting the sliding cylinder 3, during operations such as transportation and conveying, the sliding cylinder 3 is first put on the bolt 1, and then the first nut 2 is connected to the bolt 1. The first nut 2 can fix the sliding cylinder 3 after the thread rotates a short distance, and the first nut 2 itself is also fixed, so that the entire fastener is connected as a whole, so that the fastener will not be dispersed during operations such as transportation and conveying, thereby achieving the purpose of improving the portability of the fastener.

[0055] When using the fastener for fastening connection, first unscrew the first nut 2, then take out the sliding cylinder 3, and then pass the bolt 1 through the through holes on the device and the part to be fastened placed on the device, and finally screw a nut 2 onto the bolt 1 until the first nut 2, the device and the head 102 are tightly attached together, thereby realizing the fastening connection between the device and the part to be fastened. Embodiment 2:

[0056] Reference Figure 3 and Figure 4 In addition to the first embodiment, the present embodiment further comprises a second nut 4, which is threadedly connected to the first threaded segment 1011. When the second nut 4 is not tightened, the sliding cylinder 3, the first nut 2 and the second nut 4 are sequentially arranged from top to bottom and close to the head 102. When the second nut 4 is tightened, the first nut 2, the sliding cylinder 3 and the second nut 4 are sequentially arranged from top to bottom and close to the device.

[0057] In the first embodiment, after the fastener is fastened, the sliding cylinder 3 is separated from the remaining components and is easy to be lost. Therefore, after the fastener is removed from the device, the portability of the fastener is reduced, which is not conducive to the secondary use of the fastener.

[0058] In this embodiment, by providing the second nut 4, when performing operations such as transportation and conveying, the sliding cylinder 3 is first inserted into the bolt 1, and then the first nut 2 and the second nut 4 are connected to the bolt 1 in sequence. The first nut 2 can fix the sliding cylinder 3 after the thread rotates a short distance, and the first nut 2 itself is also fixed. Then, the second nut 4 can fix the first nut 2 after the thread rotates a short distance, and the first nut 4 itself is also fixed, thereby making the entire fastener connected as a whole, so that the fastener will not be dispersed during operations such as transportation and conveying, thereby achieving the purpose of improving the portability of the fastener.

[0059] When the fastener is used for fastening connection, the second nut 4 and the first nut 2 are first unscrewed in sequence, and then the sliding cylinder 3 is taken out. Then the bolt 1 passes through the through hole on the device and the part to be fastened placed on the device, and finally a nut 2 is screwed into the bolt 1 until the first nut 2, the device and the head 102 are tightly together to achieve a fastened connection between the device and the part to be fastened, and then the sliding cylinder 3 is put onto the bolt 1, and finally the second nut 4 is screwed into the bolt 1 until the second nut 4, the sliding cylinder 3 and the first nut 2 are tightly together to achieve a secondary fastening of the device and the part to be fastened, thereby enhancing the connection reliability of the fastener.

[0060] It should be noted that after the fastener is fastened, the sliding cylinder 3 is in an integrated state with the remaining components. Therefore, after the fastener is removed from the equipment, the portability of the fastener remains unchanged, which is conducive to the secondary use of the fastener. Embodiment three:

[0061] Reference Figure 5 and Figure 6 This embodiment is based on the second embodiment, and the screw rod 101 also includes a first smooth section 1012, and the first smooth section 1012 is located above the first threaded section 1011, and the length of the first smooth section 1012 is equivalent to the depth of the through hole on the device for fastener connection.

[0062] The first smooth section 1012 can reduce the thread length of the bolt 1, thereby reducing the processing cost. At the same time, based on the first smooth section 1012, the separate bolt 1 and the first nut 2 cannot effectively prevent the first nut 2 from falling off the bolt 1 during transportation, which makes the portability of the fastener unable to be guaranteed, so the sliding cylinder 3 needs to be provided.

[0063] Furthermore, since the sliding cylinder 3 is located between the first nut 2 and the second nut 4 during the tightening connection, the screw rod 101 also includes a second smooth section 1013 and a second threaded section 1014 . The second smooth section 1013 is located below the first threaded section 1011 , and the second threaded section 1014 is located below the second smooth section 1013 .

[0064] In the tightened state, the first nut 2 is located in the first threaded section 1011, the sliding cylinder 3 is located in the second smooth section 1013, and the second nut 4 is located in the second threaded section 1014; in the untightened state, the sliding cylinder 3 is located in the first smooth section 1012, the first nut 2 is located in the first threaded section 1011, and the sliding cylinder 3 is clamped by the head 102 and the first nut 2, the second nut 4 is located in the first threaded section 1011, and the second nut 4 is tightly attached to the first nut 2.

[0065] The second smooth section 1013 corresponds to the position of the sliding cylinder 3 in the tightened state, which can reduce the length of the threaded section and further reduce the processing cost.

[0066] When performing operations such as transfer and transportation, the sliding cylinder 3 is first put on the bolt 1, and then the first nut 2 is connected to the bolt 1. The first nut 2 can fix the sliding cylinder 3 after the thread rotates a short distance, and the first nut 2 itself is also fixed, so that the entire fastener is connected as one, so that the fastener will not be dispersed during operations such as transfer and transportation, thereby achieving the purpose of improving the portability of the fastener. At this time, the sliding cylinder 3 is located in the first smooth section 1012, the first nut 2 is located in the first threaded section 1011, and the sliding cylinder 3 is clamped by the head 102 and the first nut 2, the second nut 4 is located in the first threaded section 1011, and the second nut 4 is in close contact with the first nut 2.

[0067] When using the fastener for fastening connection, first unscrew the second nut 4 and the first nut 2 in sequence, then take out the sliding cylinder 3, and then pass the bolt 1 through the through hole on the device and the part to be fastened placed on the device, and then screw a nut 2 onto the bolt 1 until the first nut 2, the device and the head 102 are tightly together to achieve a fastened connection between the device and the part to be fastened, then put the sliding cylinder 3 onto the bolt 1, and then screw the second nut 4 onto the bolt 1 until the second nut 4, the sliding cylinder 3 and the first nut 2 are tightly together to achieve secondary fastening of the device and the part to be fastened, thereby enhancing the connection reliability of the fastener. At this time, the first nut 2 is located in the first threaded section 1011, the sliding cylinder 3 is located in the second smooth section 1013, and the second nut 4 is located in the second threaded section 1014. Embodiment 4:

[0068] Reference Figure 7 and Figure 8On the basis of the third embodiment, in this embodiment, the diameters of the first smooth section 1012, the first threaded section 1011 and the second smooth section 1013 are the same, the diameter of the second threaded section 1014 is smaller than the diameter of the first smooth section 1012, the first nut 2 is adapted to the first threaded section 1011, and the second nut 4 is adapted to the second threaded section 1014.

[0069] When in an untightened state, the sliding cylinder 3 and the first nut 2 are located on the first threaded segment 1011, and the sliding cylinder 3 is located above the first nut 2 and is close to the head 102, and the second nut 4 is located on the second threaded segment 1014 and is close to the lower end of the second smooth segment 1013. When in a tightened state, the first nut 2 is located on the first threaded segment 1011 and is close to the equipment, the sliding cylinder 3 is located outside the second smooth segment 1013, and the lower end of the sliding cylinder 3 extends to the second threaded segment 1014, and the second nut 4 is located on the second threaded segment 1014 and is close to the sliding cylinder 3.

[0070] Through the above arrangement, the bolt 1 in this embodiment is divided into two sections, the upper section is thicker and the lower section is thinner. At the same time, the first nut 2 and the second nut 4 are respectively adapted to the upper and lower sections. In this way, the length of the threaded connection can be reduced during the process of screwing the first nut 2 into the bolt 1 and removing it, thereby reducing the complexity of the operation.

[0071] Since the bolt 1 is divided into two sections, with a step-like structure between the two sections, the step will limit the upward movement of the second nut 4. When the second nut 4 is screwed until it contacts the step, the second nut 4 will be fixed.

[0072] Therefore, in the present embodiment, when the fastener is being transported, delivered, etc., the sliding cylinder 3 is first put on the bolt 1, and then the first nut 2 is connected to the bolt 1, and the first nut 2 passes through the second threaded section 1014 and the second smooth section 1013. Since the diameter of the second threaded section 1014 is smaller than that of the first nut 2, and the surface of the second smooth section 1013 is smooth and has no lines, it is easier for the first nut 2 to pass through at this stage. After that, the first nut 2 is put on the first threaded section, and the sliding cylinder 3 is fixed after the thread is rotated a short distance. At the same time, the first nut 2 itself is also fixed. Then the second nut 4 is screwed in from the bottom of the second threaded section 1014. After the thread is rotated a short distance, it can contact the top step of the second threaded section 1014, thereby fixing the first nut 4, thereby making the entire fastener connected as a whole, so that the fastener will not be dispersed during transportation, delivery, etc., thereby achieving the purpose of improving the portability of the fastener.

[0073] When using the fastener for fastening connection, first unscrew the second nut 4 and the first nut 2 in sequence, then take out the sliding cylinder 3, and then pass the bolt 1 through the through hole on the device and the part to be fastened placed on the device, and then screw the first nut 2 onto the bolt 1 until the first nut 2, the device and the head 102 are tightly together to achieve a fastened connection between the device and the part to be fastened, and then put the sliding cylinder 3 onto the bolt 1. At this time, the bottom of the sliding cylinder 3 extends to the second threaded section 1014, and finally screw the second nut 4 into the second threaded section 1014 until the second nut 4, the sliding cylinder 3 and the first nut 2 are tightly together to achieve secondary fastening of the device and the part to be fastened, thereby enhancing the connection reliability of the fastener. Embodiment five:

[0074] Reference Figures 9 to 12 In this embodiment, the side surfaces of the first smooth section 1012 and the first threaded section 1011 are provided with a first sliding groove 5, the inner wall of the sliding cylinder 3 is provided with a sliding bar 6, the sliding bar 6 corresponds to the first sliding groove 5, the side surface of the second smooth section 1013 is provided with a second sliding groove 7, the second sliding groove 7 is connected to the first sliding groove 5, the side surface of the second threaded section 1014 is provided with a third sliding groove 8, the third sliding groove 8 is connected to the second sliding groove 7, and the bottom sides of the third sliding groove 8 extend outward to form a trumpet-shaped guide groove 9.

[0075] By providing the guide groove 9, the third sliding groove 8, the second sliding groove 7, the first sliding groove 5 and the sliding bar 6, a guide can be provided for the up and down movement of the sliding cylinder 3, so that the sliding cylinder 3 remains coaxial with the bolt 1, thereby avoiding collision between the sliding cylinder 3 and the threaded pattern on the bolt 1 during movement, so that the up and down movement of the sliding cylinder 3 is smoother.

[0076] Furthermore, a first guide rod 10 is connected to the lower end of the second threaded section 1014 . The first guide rod 10 is in an inverted frustum shape, so that the first nut 2 and the second nut 4 can enter the second threaded section 1014 .

[0077] At the same time, a second guide rod 11 is connected between the second smooth section 1013 and the second threaded section 1014 . The second guide rod 11 is in the shape of an inverted frustum, so as to facilitate the first nut 2 to enter the first smooth section 1012 .

[0078] Furthermore, the lower part of the second nut 4 is connected to a second inner cylinder 12, the outer periphery of the second inner cylinder 12 is rotatably provided with a second outer cylinder 13, the side of the second outer cylinder 13 is connected to a second slide rod 14, and the end of the second slide rod 14 is connected to a second sliding end 15;

[0079] A second guide column 16 is connected between the second guide rod 11 and the second threaded section 1014, and a second guide slot 17 is arranged on the side of the second guide column 16. A second side wall slot 18 is arranged on the slot wall of the second guide slot 17. The second guide slot 17 is used to accommodate the end of the second slide rod 14, and the second side wall slot 18 is used to accommodate the second sliding end 15. The width of the second side wall slot 18 gradually decreases from the bottom to the middle, and the width of the second side wall slot 18 is the same from the middle to the top and is adapted to the second sliding end 15.

[0080] The second guide slot 17 overlaps with the third slide slot 8 .

[0081] When the second nut 4 is screwed into the second threaded section 1014, it can be screwed in relatively smoothly because the second nut 4 needs to be coaxial with the bolt 1. In this embodiment, through the above arrangement, the end of the second slide rod 14 is aligned with the second guide slide groove 17, and the second sliding end 15 is aligned with the second side wall groove 18. As the second nut 4 moves upward, the second sliding end 15 enters the second side wall groove 18 and moves upward along the second side wall groove 18. As the second sliding end 15 moves upward, under the joint action of multiple second side wall grooves 18, the second nut 4 is gradually adjusted to a state of being coaxial with the bolt 1, thereby facilitating the second nut 4 to be screwed into the second threaded section 1014.

[0082] It is worth pointing out that in this embodiment, the second sliding end 15 is roughly spherical, while the upper half of the second side wall groove 18 is cylindrical and the lower half is truncated cone, so that the second sliding end 15 is gradually limited and guided during the upward movement. Under the joint action of multiple second side wall grooves 18, the second nut 4 is gradually adjusted to a coaxial state with the bolt 1 during the upward movement.

[0083] It should be noted that the third sliding groove 8 extends to the second guide rod 11 and the second guide column 16 , and the guide groove 9 is formed at the bottom of the second guide column 16 .

[0084] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0085] What has been described above are only preferred specific implementation methods of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A portable stainless steel fastener, characterized in that: include: A bolt (1), the bolt (1) comprising a screw rod (101) and a head (102), the screw rod (101) comprising a first threaded section (1011); a first nut (2), and A sliding cylinder (3), the sliding cylinder (3) being used to prevent the first nut (2) from falling off from the bolt (1) in an unfastened state; It also includes a second nut (4), and the screw rod (101) also includes a first smooth section (1012), and the first smooth section (1012) is located above the first threaded section (1011); The screw rod (101) further comprises a second smooth section (1013) and a second threaded section (1014), wherein the second smooth section (1013) is located below the first threaded section (1011), and the second threaded section (1014) is located below the second smooth section (1013); In a tightened state, the first nut (2) is located in the first threaded section (1011), the sliding cylinder (3) is located in the second smooth section (1013), and the second nut (4) is located in the second threaded section (1014); In an unfastened state, the sliding cylinder (3) is located in the first smooth section (1012), the first nut (2) is located in the first threaded section (1011), and the sliding cylinder (3) is clamped by the head (102) and the first nut (2), the second nut (4) is located in the first threaded section (1011), and the second nut (4) is tightly attached to the first nut (2).

2. A portable stainless steel fastener as claimed in claim 1, characterized in that: The sliding cylinder (3) is a circular tube structure with open ends. The inner diameter of the sliding cylinder (3) is greater than the diameter of the screw rod (101), and the outer diameter of the sliding cylinder (3) is greater than the outer diameter of the first nut (2).

3. A portable stainless steel fastener as claimed in claim 1, characterized in that: The length of the first smooth section (1012) is equivalent to the depth of a through hole on the device for fastener connection.

4. A portable stainless steel fastener as claimed in claim 1, characterized in that: The diameters of the first smooth section (1012), the first threaded section (1011), and the second smooth section (1013) are the same, and the diameter of the second threaded section (1014) is smaller than the diameter of the first smooth section (1012); The first nut (2) is matched with the first thread segment (1011), and the second nut (4) is matched with the second thread segment (1014); In an unfastened state, the sliding cylinder (3) and the first nut (2) are located on the first threaded section (1011), and the sliding cylinder (3) is located above the first nut (2) and is in close contact with the head (102), and the second nut (4) is located on the second threaded section (1014) and is in close contact with the lower end of the second smooth section (1013); In the tightened state, the first nut (2) is located on the first threaded section (1011) and is in close contact with the device, the sliding cylinder (3) is located outside the second smooth section (1013), and the lower end of the sliding cylinder (3) extends to the second threaded section (1014), and the second nut (4) is located on the second threaded section (1014) and is in close contact with the sliding cylinder (3).

5. A portable stainless steel fastener as claimed in claim 1, characterized in that: A first sliding groove (5) is provided on the side surfaces of the first smooth section (1012) and the first threaded section (1011), and a sliding bar (6) is provided on the inner wall of the sliding cylinder (3), and the sliding bar (6) corresponds to the first sliding groove (5); A second sliding groove (7) is provided on the side of the second smooth section (1013), and the second sliding groove (7) is connected to the first sliding groove (5). A third sliding groove (8) is provided on the side of the second threaded section (1014), and the third sliding groove (8) is connected to the second sliding groove (7). Both sides of the bottom of the third sliding groove (8) extend outward to form a trumpet-shaped guide groove (9).

6. A portable stainless steel fastener as claimed in claim 1, characterized in that: The lower end of the second threaded section (1014) is connected to a first guide rod (10), and the first guide rod (10) is in the shape of an inverted truncated cone, so as to facilitate the first nut (2) and the second nut (4) to enter the second threaded section (1014).

7. A portable stainless steel fastener as claimed in claim 1, characterized in that: A second guide rod (11) is connected between the second smooth section (1013) and the second threaded section (1014), and the second guide rod (11) is in the shape of an inverted frustum, so as to facilitate the first nut (2) to enter the second smooth section (1013).

8. A portable stainless steel fastener as claimed in claim 7, characterized in that: The lower part of the second nut (4) is connected to a second inner cylinder (12), the outer periphery of the second inner cylinder (12) is rotatably provided with a second outer cylinder (13), the side surface of the second outer cylinder (13) is connected to a second sliding rod (14), and the end of the second sliding rod (14) is connected to a second sliding end (15); A second guide column (16) is connected between the second guide rod (11) and the second threaded section (1014); a second guide slot (17) is provided on the side of the second guide column (16); a second side wall slot (18) is provided on the slot wall of the second guide slot (17); the second guide slot (17) is used to accommodate the end of the second slide rod (14); the second side wall slot (18) is used to accommodate the second sliding end (15); the width of the second side wall slot (18) gradually decreases from the bottom to the middle; the width of the second side wall slot (18) is the same from the middle to the top and is compatible with the second sliding end (15).

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