A non-slip fastening device with anti-floating locking function

Abstract

The present invention discloses a non-slip fastening device with an anti-floating locking function, comprising: a screw, a base, a spring and a baffle. During the loosening process of the device, the external thread on the screw will cooperate with the internal thread on the baffle, and when it is completely loosened, the positioning surface of the screw will fit tightly with the corresponding positioning surface on the base, so that the screw will not continue to be rotated, thereby locking the screw and preventing it from floating and loosening in the loosened state. When the device is in the loosened state, the screw will not fall out of the base, so it will not become redundant. During the complete loosening process of the device, the positioning surface on the screw will contact and fit with the corresponding positioning surface on the base, so that the screw will not continue to loosen, thereby allowing the operator to obtain feedback that the screw is fully loosened. The present invention can provide a fastening device with an anti-floating locking function, so that the screw can be locked and cannot be loosened in the completely loosened state, and can prevent the exposed thread of the screw from scratching the operator.

Description

Technical Field

[0001] The invention relates to a non-slip fastening device, in particular to a non-slip fastening device with an anti-floating locking function. Background Art

[0002] Non-slip fastening devices are primarily used for on-orbit installation or removal of equipment that requires space. Since all objects on-orbit are weightless, traditional screw fastening devices will float in the air when loosened and disengaged. They can easily drift into confined spaces, becoming redundant and, in serious cases, causing malfunctions in other equipment. Furthermore, when dismantling a structure, operators cannot determine by sight or feel whether the fastening device has been loosened. Furthermore, when the screws are loosened, they cannot be restrained, and the screws on the screws are exposed, which can easily cause scratches to the operator. Therefore, traditional fastening devices cannot meet the ergonomic design requirements for on-orbit operations.

[0003] Traditional screw fastening generally uses standard screws to fasten the connecting part and the connected part together. The connecting part has a plain hole, and the connected part has a threaded hole. The threaded section of the screw passes through the plain hole on the connecting part and is screwed into the screw hole on the connected part until the screw cap presses the connecting part and the connected part together. When the connecting part needs to be separated from the connected part, the screw needs to be loosened until the threaded section of the screw is completely disengaged from the threaded hole of the connected part. At this point, there is no connection between the screw and the connecting part or other connecting parts, and under the action of a certain external force, it can freely disengage from the plain hole of the connecting part. In addition, the screw can now rotate continuously in the direction of loosening the thread, and the operator cannot determine whether the threaded section of the screw is completely disengaged from the threaded hole of the connected part. Summary of the Invention

[0004] The purpose of the present invention is to provide a non-slip fastening device with an anti-floating locking function, which solves the problem that in previous devices, there is no connection between the screw and the connecting part and the other connecting part. Under the action of a certain external force, the screw can freely detach from the light hole of the connecting part, and the screw can be rotated continuously in the direction of loosening the thread. The operator cannot determine whether the threaded section of the screw is completely detached from the threaded hole of the connected part.

[0005] A non-slip fastening device with an anti-floating locking function comprises a screw, a base, a spring and a blocking piece.

[0006] The screw has a head at the top, a smooth rod in the middle, and external threads at the bottom. The upper surface of the head serves as the third locating surface, while the lower surface serves as the fourth locating surface. The base is cylindrical, with an operating hole at the top and a small cylindrical cavity at the bottom. The base and small cylindrical cavity are coaxial. The top inner surface of the base serves as the first locating surface, while the bottom inner surface of the base serves as the second locating surface. Between the first and second locating surfaces is a large cylindrical cavity with two arc-shaped slots symmetrically distributed on the cylindrical cavity wall. The top of the spring serves as the upper end face, while the bottom serves as the lower end face. The baffle is cylindrical, with a circular flange on its upper outer surface. The outer edge of the circular flange features two arc-shaped tenons, with the line connecting the centers of the two tenons passing through the axis of the baffle. The upper surface of the circular boss serves as the fifth locating surface, while the lower surface serves as the sixth locating surface. The inner surface of the baffle's center hole is internally threaded. The screw, spring, and baffle are all housed in the base. The spring is sleeved on the outside of the screw and is in a compressed state, with the upper end surface in contact with the first positioning surface and the lower end surface in contact with the fifth positioning surface. The lower part of the baffle is placed in the small cylindrical cavity of the base. The two tenons are respectively placed in the two corresponding slots, and the tenons slide along the slots. The second positioning surface is in contact with the sixth positioning surface. The screw, base, spring and baffle are all coaxial. The diameter of the screw bolt head is larger than the diameter of the base operating hole. The diameter of the screw bolt head is larger than the outer diameter of the internal thread. The diameter of the polished rod is smaller than the inner diameter of the internal thread. The diameter of the baffle ring flange is smaller than the diameter of the large cylindrical cavity of the base.

[0007] Preferably, the screw slides axially within the base.

[0008] Preferably, the blocking piece slides along the axial direction of the base and cannot rotate along the circumferential direction.

[0009] Preferably, the spring provides thrust to the blocking piece in the axial direction.

[0010] Preferably, when the fastening device is in a loosened state, the external thread of the screw is threadably engaged with the internal thread of the blocking plate, and the third positioning surface of the screw is in contact with the first positioning surface of the base.

[0011] Preferably, when the fastening device is in a fastened state, the polished rod of the screw passes through the internal thread of the baffle without a matching relationship, and the third positioning surface of the screw contacts the fifth positioning surface of the baffle.

[0012] 1. During the loosening process of the device of the present invention, the external thread on the screw will cooperate with the internal thread on the baffle, and when it is completely loosened, the positioning surface of the screw will tightly fit with the corresponding positioning surface on the base, so that the screw will not continue to rotate, thereby locking the screw and preventing it from floating or loosening in the loosened state.

[0013] Second, when the device of the present invention is in a loosened state, the screw will not fall out of the base, and thus will not become redundant.

[0014] 3. When the device of the present invention is in the loosened state, the threads on the screw will not be exposed to the outside.

[0015] 4. When the device of the present invention is completely loosened, the positioning surface on the screw will contact and fit with the corresponding positioning surface on the base, so that the screw will not be loosened further, and the operator will get feedback that the screw has been loosened to the full position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the loosened state of a non-slip fastening device with an anti-floating locking function.

[0017] Figure 2 It is a schematic diagram of the fastening state of a non-slip fastening device with an anti-floating locking function.

[0018] Figure 3 This is a schematic diagram of the base.

[0019] Figure 4 It is a schematic diagram of a spring.

[0020] Figure 5 This is a diagram of a screw.

[0021] Figure 6 It is a schematic diagram of the baffle.

[0022] 1. Screw 2. Base 3. Spring

[0023] 4. Baffle 5. First positioning surface 6. Second positioning surface

[0024] 7. Card slot 8. Upper end surface 9. Lower end surface

[0025] 10. Third positioning surface 11. Fourth positioning surface 12. Polished rod

[0026] 13. External thread 14. Tenon 15. Fifth positioning surface

[0027] 16. Sixth positioning surface 17. Internal thread DETAILED DESCRIPTION

[0028] Everything in orbit is weightless. Therefore, traditional screw fasteners, when loosened, can float in space and potentially drift into confined spaces, becoming redundant and potentially causing malfunctions in other equipment. Furthermore, when dismantling structures, operators cannot determine by sight or feel whether a fastener has been loosened. Furthermore, when loosened, screws cannot be restrained, exposing the threads and potentially causing scratches. Therefore, traditional fasteners fail to meet the ergonomic design requirements for on-orbit operations.

[0029] The present invention provides a non-slip fastening device with an anti-floating locking function, which solves the problems of existing fastening devices such as easy floating, exposed threads that easily scratch the operator, and the inability to provide loosening feedback. The present invention can provide a fastening device with an anti-floating locking function, so that the screw 1 can be locked and prevented from loosening when completely loosened, and the exposed threads of the screw 1 can be prevented from scratching the operator.

[0030] Example 1

[0031] The non-slip fastening device with anti-floating locking function of the present invention includes: a screw 1, a base 2, a spring 3, and a baffle 4; wherein: the screw 1 is arranged in the base 2, is placed coaxially with the base 2, and can slide axially in the base 2.

[0032] Furthermore, a baffle 4 is placed in the base 2, and the sixth positioning surface 16 of the baffle 4 contacts the second positioning surface 6 of the base 2. At the same time, the tenon 14 of the baffle 4 is engaged with the slot 7 of the base 2, and the baffle 4 can slide axially along the base 2 but cannot rotate circumferentially.

[0033] Furthermore, a spring 3 is coaxially placed in the base 2, and the lower end surface 9 of the spring 3 contacts the fifth positioning surface 15 of the baffle 4, the upper end surface 8 of the spring 3 contacts the first positioning surface 5 on the base 2, and the spring 3 provides thrust to the baffle 4 in the axial direction.

[0034] Furthermore, when the device is loosened, after the internal thread 17 on the baffle 4 and the external thread 13 on the screw 1 rotate to a certain extent, the first positioning surface 5 on the base 2 will contact the third positioning surface 10 on the screw 1, causing the screw 1 to be unable to continue rotating.

[0035] Furthermore, when the device is tightened, the fourth positioning surface 11 of the screw 1 contacts the second positioning surface 6, the diameter of the polished rod 12 of the screw 1 is smaller than the minor diameter of the internal thread 17 of the baffle 4, and the polished rod 12 of the screw 1 can slide axially and rotate circumferentially in the internal thread 17 of the baffle 4.

[0036] Example 2

[0037] A non-slip fastening device with an anti-floating locking function comprises: a screw 1, a base 2, a spring 3 and a blocking piece 4.

[0038] The upper portion of the screw 1 is the bolt head, the middle portion is the polished rod 12 , and the lower portion is the external thread 13 ; the upper surface of the bolt head is the third positioning surface 10 , and the lower surface is the fourth positioning surface 11 .

[0039] The base 2 is cylindrical, with an operating hole on the top and a small cylindrical cavity on the bottom. The base 2 and the small cylindrical cavity are coaxial; the top inner surface of the base 2 is the first positioning surface 5; the bottom inner surface of the base 2 is the second positioning surface 6; between the first positioning surface 5 and the second positioning surface 6 is a large cylindrical cavity, and two arc-shaped slots 7 are symmetrically distributed on the wall of the cylindrical cavity.

[0040] The top of the spring 3 is an upper end surface 8 , and the bottom is a lower end surface 9 .

[0041] The baffle 4 is cylindrical, with a circular flange on its upper outer surface. The outer edge of the circular flange has two arc-shaped tenons 14, and the line connecting the centers of the two tenons 14 passes through the axis of the baffle 4; the upper surface of the circular boss is the fifth positioning surface 15, and the lower surface is the sixth positioning surface 16; the inner surface of the center hole of the baffle 4 is an internal thread 17.

[0042] Screw 1, spring 3, and retaining plate 4 are all placed in base 2. Spring 3 is sleeved over screw 1 and is in a compressed state, with its upper end surface 8 contacting the first positioning surface 5 and its lower end surface 9 contacting the fifth positioning surface 15. The lower portion of retaining plate 4 is placed in the small cylindrical cavity of base 2. Two latches 14 are respectively placed in corresponding slots 7 and can slide along the slots 7. Second positioning surface 6 contacts sixth positioning surface 16.

[0043] When the device is in the loosened state, the external thread 13 of the screw 1 is threadably engaged with the internal thread 17 of the blocking piece 4 , and the third positioning surface 10 of the screw 1 is in contact with the first positioning surface 5 of the base 2 .

[0044] When the device is in a tightened state, the polished rod 12 of the screw 1 passes through the internal thread 17 of the baffle 4 without a matching relationship, and the third positioning surface 10 of the screw 1 contacts the fifth positioning surface 15 of the baffle 4 .

[0045] Screw 1, base 2, spring 3, and retaining plate 4 are all coaxial. The diameter of the screw head of screw 1 is larger than the diameter of the operating hole of base 2. The diameter of the screw head of screw 1 is larger than the outer diameter of internal thread 17. The diameter of polished rod 12 is smaller than the inner diameter of internal thread 17. The diameter of the annular flange of retaining plate 4 is smaller than the diameter of the large cylindrical cavity of base 2.

Claims

1. A non-detachable fastening device with an anti-floating locking function, characterized in that: include: Screw (1), base (2), spring (3) and baffle (4); The upper part of the screw (1) is a bolt head, the middle part is a polished rod (12), and the lower part is an external thread (13); the upper surface of the bolt head is a third positioning surface (10), and the lower surface is a fourth positioning surface (11); the base (2) is cylindrical, with an operating hole on the top and a small cylindrical cavity on the bottom, and the base (2) and the small cylindrical cavity are coaxial; the top inner surface of the base (2) is a first positioning surface (5); the bottom inner surface of the base (2) is a second positioning surface (6); the first positioning surface (5) and the second positioning surface (6) are connected. There is a large cylindrical cavity between the positioning surfaces (6), and two arc-shaped slots (7) are symmetrically distributed on the wall of the cylindrical cavity; the top of the spring (3) is the upper end surface (8), and the bottom is the lower end surface (9); the baffle (4) is cylindrical, and the upper outer surface has a circle of annular flange, and the outer edge of the annular flange has two arc-shaped tenons (14), and the line connecting the centers of the two tenons (14) passes through the axis of the baffle (4); the upper surface of the annular boss is the fifth positioning surface (15), and the lower surface is the sixth positioning surface (16); the inner surface of the center hole of the baffle (4) is an internal thread (17); the screw (1), the spring (3) and the baffle (4) are all placed in the base (2); the spring (3) is sleeved on the outside of the screw (1) and is in a compressed state, with the upper end surface (8) in contact with the first positioning surface (5) and the lower end surface (9) in contact with the fifth positioning surface (15); the lower part of the baffle (4) is placed in the small cylindrical cavity of the base (2); the two tenons (14) are respectively placed in the corresponding two slots (7), and The tenon (14) slides along the slot (7); the second positioning surface (6) contacts the sixth positioning surface (16); the screw (1), the base (2), the spring (3) and the baffle (4) are all coaxial; the diameter of the bolt head of the screw (1) is larger than the diameter of the operating hole of the base (2); the diameter of the bolt head of the screw (1) is larger than the outer diameter of the internal thread (17); the diameter of the polished rod (12) is smaller than the inner diameter of the internal thread (17); and the diameter of the annular flange of the baffle (4) is smaller than the diameter of the large cylindrical cavity of the base (2).

2. A non-slip fastening device with anti-floating locking function according to claim 1, characterized in that: The screw (1) slides axially inside the base (2).

3. A non-detachable fastening device with anti-floating locking function according to claim 2, characterized in that: The blocking piece (4) slides axially along the base (2) and cannot rotate circumferentially.

4. A non-slip fastening device with anti-floating locking function according to claim 3, characterized in that: The spring (3) provides thrust to the blocking piece (4) in the axial direction.

5. A non-slip fastening device with anti-floating locking function according to any one of claims 1 to 4, characterized in that: When the non-slipping fastening device is in a loosened state, the external thread (13) of the screw (1) is threadably engaged with the internal thread (17) of the baffle (4), and the third positioning surface (10) of the screw (1) contacts the first positioning surface (5) of the base (2).

6. A non-falling-out fastening device with an anti-floating locking function according to any one of claims 1 to 4, characterized in that: In the tightening state of the non-slip fastening device, the smooth rod (12) of the screw (1) passes through the internal thread (17) of the baffle (4) without a matching relationship, and the third positioning surface (10) of the screw (1) contacts the fifth positioning surface (15) of the baffle (4).

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