Sheep eye expansion bolt

Abstract

The utility model discloses a screw eye expansion bolt which comprises a screw rod, an expansion sleeve and a nut, the screw rod comprises an expansion head part, a threaded rod part and a screw eye part which are connected in sequence, the expansion sleeve and the nut are sleeved on the threaded rod part, the nut is in threaded connection with the threaded rod part, and the screw eye part is of an arc-shaped structure. An unhooking gap is formed between the screw eye ring part and the threaded rod part, a telescopic sleeve is installed on the screw eye ring part, and the telescopic sleeve comprises an inner arc-shaped sleeve, an outer arc-shaped sleeve, a first clamping assembly and a second clamping assembly. The unhooking gap is blocked through the telescopic sleeve, hanging objects such as lifting ropes are prevented from sliding out of the unhooking gap, the hanging stability is improved, and it is guaranteed that the hanging objects are reliably fixed. Operation is simple, and installation flexibility is good; the telescopic sleeve is moved out to block the unhooking gap, so that the unhooking gap is exposed, hanging objects can be unhooked conveniently, the use flexibility is improved, and the unhooking device is suitable for scenes with limited disassembly and assembly space and frequent hanging object replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion bolts, in particular to a sheep eyelet expansion bolt. Background Art

[0002] An eyelet expansion bolt is a special bolt with a ring-shaped structure similar to an eyelet at one end. It is used to hang items such as mirrors, photo frames, and small tools. During installation, the bolt expands by inserting it into a pre-drilled hole and tightening the nut, causing the rear end of the bolt to expand, securing it to the wall, ceiling, or other structural element, allowing the suspended item to be stably fixed.

[0003] Eyelet expansion bolts come in closed and open types. Closed eyelet expansion bolts feature a complete ring-shaped eyelet, which prevents objects from becoming unhooked and provides a stable hang. Open eyelet expansion bolts feature an opening in the eyelet, providing flexibility in installation and use. This opening allows for easy insertion of hooks or ropes, making it ideal for frequent changes of objects.

[0004] While open-type eyelet expansion bolts are convenient for hanging and removing objects, the rope and other hanging objects are easily forced out of the opening after being hung, resulting in poor hanging stability and an inability to ensure reliable fixation of the hanging objects. This problem is more obvious in scenes with vibration or shaking. Due to the closed ring structure of the eyelet, closed-type eyelet expansion bolts require the hook or rope of the hanging object to be passed through the eyelet during installation. This operation is more difficult for some large or irregularly shaped hooks, especially in limited installation space. This inconvenience is more prominent and the flexibility is poor. Utility Model Content

[0005] Based on this, it is necessary to provide a kind of sheep eye expansion bolt to address the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a sheep eye expansion bolt, comprising a screw, an expansion sleeve and a nut, the screw comprising an expansion head, a threaded rod and a sheep eye portion connected in sequence, the threaded rod being sleeved with an expansion sleeve and a nut, the nut being threadedly connected to the threaded rod, the sheep eye portion being an arc-shaped structure, and a decoupling gap being provided between the sheep eye portion and the threaded rod portion, a telescopic sleeve being installed on the sheep eye portion, the telescopic sleeve comprising an inner arc sleeve, an outer arc sleeve, a first clamping assembly and a second clamping assembly, the inner arc sleeve being slidably mounted on the sheep eye portion, the outer arc sleeve being slidably mounted on the inner arc sleeve, the inner arc sleeve and the sheep eye portion being clamped by the first clamping assembly, and the outer arc sleeve and the inner arc sleeve being clamped by the second clamping assembly; when the inner arc sleeve and the sheep eye portion are clamped by the first clamping assembly, and the outer arc sleeve and the inner arc sleeve are clamped by the second clamping assembly, the telescopic sleeve blocks the decoupling gap.

[0007] Preferably, a card slot is provided on the sheep eye ring portion; the first card connection assembly includes a first sleeve, a first slider, a first pull rod, a first plunger, and a first spring. The first sleeve is fixedly installed on the inner arc sleeve, and the first slider is slidably installed in the first sleeve. The first plunger is fixedly connected to one end of the first slider facing the inner arc sleeve, and a first opening for the first plunger to extend out is provided on the inner arc sleeve. The first plunger can be engaged with the card slot after passing through the first opening; the first pull rod is fixedly connected to one end of the first slider facing away from the inner arc sleeve, and the first pull rod extends out of the first sleeve at one end away from the first slider.

[0008] Preferably, a first hand-pull piece is fixed to one end of the first pull rod extending out of the inner arc-shaped sleeve.

[0009] Preferably, the second clamping assembly includes a second sleeve, a second slider, a second pull rod, a second plunger, and a second spring. The second sleeve is fixedly mounted on the outer arc-shaped sleeve, and the second slider is slidably mounted in the second sleeve. The second plunger is fixedly connected to one end of the second slider facing the outer arc-shaped sleeve. A second opening for the second plunger to extend out is provided on the outer arc-shaped sleeve, and a third opening for the second plunger to extend out is provided on the inner arc-shaped sleeve. The second plunger can be clamped with the third opening after passing through the second opening; the second pull rod is fixedly connected to one end of the second slider facing away from the outer arc-shaped sleeve, and the second pull rod extends out of the second sleeve at one end away from the second slider.

[0010] Preferably, a second hand-pull piece is fixed to one end of the second pull rod extending out of the outer arc-shaped sleeve.

[0011] Preferably, the first opening and the third opening are both provided on a side of the inner arc-shaped sleeve facing away from the sheep eye ring portion.

[0012] Preferably, it also includes a gasket, which is sleeved on the threaded rod and located between the nut and the expansion sleeve.

[0013] Compared with the existing technology, this technical solution has at least one of the following beneficial effects: it integrates the advantages of open and closed eyelet expansion bolts, blocks the unhooking gap through the telescopic sleeve, prevents hanging objects such as ropes from slipping out of the unhooking gap, improves the suspension stability, and ensures the reliable fixation of the hanging objects; it is simple to operate and has good installation flexibility; by moving the telescopic sleeve out of the blocked unhooking gap, the unhooking gap is exposed, which facilitates the unhooking of the hanging objects and improves the flexibility of use. It is suitable for scenarios with limited disassembly and assembly space and frequent replacement of hanging objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the eyelet expansion bolt of an embodiment of the utility model Figure 1 (Telescopic sleeve ready for assembly);

[0015] Figure 2 This is a schematic diagram of the structure of the eyelet expansion bolt of an embodiment of the utility model Figure 2 (The telescopic sleeve is assembled to the eye ring);

[0016] Figure 3 This is a schematic diagram of the structure of the eyelet expansion bolt of an embodiment of the utility model Figure 3 (Telescopic sleeve closes the unhooking gap state);

[0017] Figure 4 This is a front view of an eyelet expansion bolt according to an embodiment of the present invention (in a state where the telescopic sleeve closes the unhooking gap);

[0018] Figure 5 This is a schematic diagram of the structure of the eyelet expansion bolt of an embodiment of the utility model Figure 5 (The telescopic sleeve is moved out of the unhooking gap);

[0019] Figure 6 This is a schematic structural diagram of a telescopic sleeve according to an embodiment of the present invention;

[0020] 1. Screw; 11. Expansion head; 12. Threaded rod; 13. Eyelet; 131. Slot; 2. Expansion sleeve; 3. Nut; 4. Unhooking gap; 5. Telescopic sleeve; 51. Inner arc sleeve; 511. First opening; 512. Third opening; 52. Outer arc sleeve; 521. Second opening; 53. First clamping assembly; 531. First sleeve; 532. First slider; 533. First pull rod; 534. First plunger; 535. First spring; 536. First hand-pull member; 54. Second clamping assembly; 541. Second sleeve; 542. Second slider; 543. Second pull rod; 544. Second plunger; 545. Second spring; 546. Second hand-pull member; 6. Gasket DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] See also Figures 1 to 6 The embodiment of the present application provides a sheep eye expansion bolt, comprising a screw rod 1, an expansion sleeve 2, a nut 3, and a gasket 6. The screw rod 1 comprises an expansion head 11, a threaded rod 12, and a sheep eye portion 13 connected in sequence. The threaded rod 12 is provided with an external thread, and the threaded rod 12 is sleeved with an expansion sleeve 2, a nut 3, and a gasket 6. The nut 3 is threadedly connected to the threaded rod 12, and the gasket 6 is located between the nut 3 and the expansion sleeve; by rotating the nut 3, the gasket 6 and the expansion sleeve 2 are driven to move on the threaded rod 12, so that the expansion end of the expansion sleeve 2 abuts against the expansion head 11. The maximum diameter of the expansion head 11 is larger than the inner diameter of the expansion sleeve 2. As the expansion sleeve 2 moves, the expansion head 11 expands the expansion end of the expansion sleeve 2, thereby fixing it in the drilled hole. The above are all principles of sheep eye expansion bolts in the prior art and will not be repeated here.

[0023] The key point of this embodiment is that the sheep eye ring portion 13 has an arc-shaped structure, and there is a decoupling gap 4 between the sheep eye ring portion 13 and the threaded rod portion 12. A telescopic sleeve 5 is installed on the sheep eye ring portion 13, and the telescopic sleeve 5 includes an inner arc sleeve 51, an outer arc sleeve 52, a first clamping component 53 and a second clamping component 54. The inner arc sleeve 51 is slidably installed on the sheep eye ring portion 13, and the outer arc sleeve 52 is slidably installed on the inner arc sleeve 51. The inner arc sleeve 51 and the sheep eye ring portion 13 can be clamped by the first clamping component 53, and the outer arc sleeve 52 and the inner arc sleeve 51 can be clamped by the second clamping component 54; when the inner arc sleeve 51 and the sheep eye ring portion 13 are clamped by the first clamping component 53, and the outer arc sleeve 52 and the inner arc sleeve 51 are clamped by the second clamping component 54, the telescopic sleeve 5 blocks the decoupling gap 4.

[0024] like Figure 1 As shown, a slot 131 is provided on the eye ring portion 13; Figure 6As shown, the first clamping assembly 53 includes a first sleeve 531, a first slider 532, a first pull rod 533, a first plunger 534, and a first spring 535. The first sleeve 531 is fixedly installed on the inner arc sleeve 51, and the first slider 532 is slidably installed in the first sleeve 531. The first plunger 534 is fixedly connected to the end of the first slider 532 facing the inner arc sleeve 51. A first opening 511 is provided on the inner arc sleeve 51 for the first plunger 534 to extend out. After passing through the first opening 511, the first plunger 534 can be clamped with the clamping groove 131; the first pull rod 533 is fixedly connected to the end of the first slider 532 facing away from the inner arc sleeve 51, and the first pull rod 533 extends out of the first sleeve 531 away from the end of the first slider 532.

[0025] The first sleeve 531 and the first slider 532 play a guiding role, allowing the first slider 532 to move linearly in the first sleeve 531. Under the elastic force of the first spring 535, the first spring 535 pushes the first slider 532 and the first plunger 534, causing the first plunger 534 to extend toward the first opening 511. When the first plunger 534 moves to the slot 131, it is pushed into the slot 131 under the elastic force of the first spring 535, and the first plunger 534 is engaged with the slot 131.

[0026] In order to facilitate pulling the first pull rod 533, a first hand pull member 536 is fixed to one end of the first pull rod 533 extending out of the inner arc-shaped sleeve 51. The second hand pull member 546 is a pull ring, and can also be a handle.

[0027] The second clamping assembly 54 includes a second sleeve 541, a second slider 542, a second pull rod 543, a second plunger 544, and a second spring 545. The second sleeve 541 is fixedly installed on the outer arc-shaped sleeve 52, and the second slider 542 is slidably installed in the second sleeve 541. The second plunger 544 is fixedly connected to the end of the second slider 542 facing the outer arc-shaped sleeve 52. A second opening 521 for the second plunger 544 to extend out is provided on the outer arc-shaped sleeve 52, and a third opening 512 for the second plunger 544 to extend out is provided on the inner arc-shaped sleeve 51. The second plunger 544 can be clamped with the third opening 512 after passing through the second opening 521; the second pull rod 543 is fixedly connected to the end of the second slider 542 facing away from the outer arc-shaped sleeve 52, and the second pull rod 543 extends out of the second sleeve 541 at the end away from the second slider 542. The principle of the second clamping assembly 54 is the same as that of the first clamping assembly 53 , and reference may be made to the principle of the first clamping assembly 53 , which will not be described in detail.

[0028] In order to facilitate pulling the second pull rod 543, a second hand pull member 546 is fixed to one end of the second pull rod 543 extending out of the outer arc-shaped sleeve 52. The second hand pull member 546 is a pull ring, and can also be a handle.

[0029] The first opening 511 and the third opening 512 are both provided on the side of the inner arc-shaped sleeve 51 facing away from the eye ring 13. In this way, the first clamping assembly 53 and the second clamping assembly 54 are both located outside the eye ring 13 and will not contact hanging objects such as a sling inside the eye ring 13.

[0030] When the telescopic sleeve 5 of this embodiment is assembled to the eye ring portion 13, Figure 1 As shown, the telescopic sleeve 5 is first put into a contracted state, that is, the outer arc sleeve 52 is completely sleeved on the inner arc sleeve 51, so that the length of the telescopic sleeve 5 is minimized. At this time, the length of the telescopic sleeve 5 is smaller than the unhooking gap 4, and the telescopic sleeve 5 can be easily moved to the unhooking gap 4. Then, as shown in FIG. Figure 2 As shown, when the first hand-pull member 536 is pulled, the telescopic sleeve 5 can be installed on the eye ring portion 13 to prevent the first plunger 534 from being stuck in the slot 131;

[0031] When using, such as Figure 2 As shown, the telescopic sleeve 5 is first overlapped and fitted on the eye ring portion 13, so that the telescopic sleeve 5 is away from the unhooking gap 4, thereby facilitating the hanging object to enter the eye ring portion 13 from the unhooking gap 4; then, the telescopic sleeve 5 can be moved on the eye ring portion 13, so that the first plunger 534 moves to the slot 131 and is engaged with the slot 131, thereby achieving the positioning of the inner arc sleeve 51, and then the outer arc sleeve 52 is moved, so that the second plunger 544 moves to the third opening 512 and is engaged with the third opening 512, as shown in FIG. Figure 3 and Figure 4 As shown, the outer arc-shaped sleeve 52 and the inner arc-shaped sleeve 51 are fixed to each other. At this time, the outer arc-shaped sleeve 52 and the inner arc-shaped sleeve 51 are fixed in shape. The outer arc-shaped sleeve 52 and the inner arc-shaped sleeve 51 are located at the unhooking gap 4, thereby blocking the unhooking gap 4, preventing the hanging rope and other suspended objects from slipping out of the unhooking gap 4, improving the suspension stability, and ensuring the reliable fixation of the suspended objects; the operation is simple and the installation flexibility is good;

[0032] When it is necessary to remove the hanging object such as the sling from the sheep eye ring portion 13, the first hand pull member 536 can be pulled to move the first plunger 534 out of the clamping groove 131, and the inner arc sleeve 51 is no longer clamped to the sheep eye ring portion 13. Then the telescopic sleeve 5 can be moved to be completely fitted on the sheep eye ring portion 13. Figure 5 As shown, the unhooking gap 4 is exposed, which facilitates the unhooking of the hanging object and improves the flexibility of use. It is suitable for scenes with limited disassembly and assembly space and frequent replacement of hanging objects.

[0033] It should be noted that those skilled in the art may make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be based on the appended claims.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A sheep eye expansion bolt, comprising a screw (1), an expansion sleeve (2) and a nut (3), wherein the screw (1) comprises an expansion head (11), a threaded rod (12) and a sheep eye portion (13) connected in sequence, the threaded rod (12) being fitted with an expansion sleeve (2) and a nut (3), the nut (3) being threadedly connected to the threaded rod (12), and characterized in that: The eye ring portion (13) is an arc-shaped structure, and a decoupling gap (4) is provided between the eye ring portion (13) and the threaded rod portion (12). A telescopic sleeve (5) is installed on the eye ring portion (13), and the telescopic sleeve (5) comprises an inner arc sleeve (51), an outer arc sleeve (52), a first clamping assembly (53) and a second clamping assembly (54). The inner arc sleeve (51) is slidably installed on the eye ring portion (13), and the outer arc sleeve (52) is slidably installed on the inner arc sleeve (51). The inner arc sleeve (51) and the sheep eye ring portion (13) can be clamped together by a first clamping assembly (53), and the outer arc sleeve (52) and the inner arc sleeve (51) can be clamped together by a second clamping assembly (54); when the inner arc sleeve (51) and the sheep eye ring portion (13) are clamped together by the first clamping assembly (53), and when the outer arc sleeve (52) and the inner arc sleeve (51) are clamped together by the second clamping assembly (54), the telescopic sleeve (5) blocks the unhooking gap (4).

2. The eyelet expansion bolt according to claim 1, characterized in that: The eye ring portion (13) is provided with a card slot (131); the first card assembly (53) comprises a first sleeve (531), a first slider (532), a first pull rod (533), a first plunger (534), and a first spring (535); the first sleeve (531) is fixedly mounted on the inner arc sleeve (51); the first slider (532) is slidably mounted in the first sleeve (531); the first plunger (534) and the first slider (532) are oriented toward the inner arc. One end of the inner arc-shaped sleeve (51) is fixedly connected, and a first opening (511) for the first plunger (534) to extend out is opened on the inner arc-shaped sleeve (51), and the first plunger (534) can be engaged with the slot (131) after passing through the first opening (511); the first pull rod (533) is fixedly connected to one end of the first slider (532) facing away from the inner arc-shaped sleeve (51), and the end of the first pull rod (533) away from the first slider (532) extends out of the first sleeve (531).

3. The eyelet expansion bolt according to claim 2, characterized in that: A first hand-pull member (536) is fixed to one end of the first pull rod (533) extending out of the inner arc-shaped sleeve (51).

4. The eyelet expansion bolt according to claim 2, characterized in that: The second clamping assembly (54) includes a second sleeve (541), a second slider (542), a second pull rod (543), a second plunger (544), and a second spring (545). The second sleeve (541) is fixedly mounted on the outer arc-shaped sleeve (52), the second slider (542) is slidably mounted in the second sleeve (541), the second plunger (544) is fixedly connected to one end of the second slider (542) toward the outer arc-shaped sleeve (52), and a spring is provided on the outer arc-shaped sleeve (52). The second plunger (544) extends out of the second opening (521), and the inner arc-shaped sleeve (51) is provided with a third opening (512) for the second plunger (544) to extend out. The second plunger (544) can be engaged with the third opening (512) after passing through the second opening (521); the second pull rod (543) is fixedly connected to the end of the second slider (542) facing away from the outer arc-shaped sleeve (52), and the second pull rod (543) extends out of the second sleeve (541) at the end away from the second slider (542).

5. The eyelet expansion bolt according to claim 4, characterized in that: A second hand-pull member (546) is fixed to one end of the second pull rod (543) extending out of the outer arc-shaped sleeve (52).

6. The eyelet expansion bolt according to claim 4, characterized in that: The first opening (511) and the third opening (512) are both opened on the side of the inner arc-shaped sleeve (51) facing away from the sheep eye ring portion (13).

7. The eyelet expansion bolt according to claim 6, characterized in that: It also includes a gasket (6), which is sleeved on the threaded rod (12) and located between the nut (3) and the expansion sleeve.

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