Swivel hook of automobile safety tensioning device

Abstract

The utility model relates to a swivel hook of an automobile safety tensioning device, which comprises a connecting ring used for connecting a braid and a hook used for connecting an antiskid plate, the connecting end of the hook can be freely and rotatably connected to the connecting ring, and the top of the hook end of the hook is integrally connected with an expanded blocking part. Due to the fact that the pivot joint structure capable of rotating relative to the hook is adopted between the connecting ring and the hook, the hook can rotate by 360 degrees, and therefore the hook can adapt to stress at various angles. The T-shaped crosspiece is arranged at the hook end of the hook, so that the contact area between the hook and the antiskid plate is increased, the stress is dispersed, the antiskid plate is prevented from being damaged due to concentrated stress, the safety is higher, and the swivel hook is particularly suitable for binding and fixing automobile tires during automobile transportation.

Description

Technical Field

[0001] The utility model relates to a rotary hook of an automobile safety tensioning device for fixing and fastening goods on means of transportation such as automobiles, trailers, airplanes, ships, etc., and is particularly suitable for bundling and fixing automobile tires when transporting automobiles. Background Art

[0002] An automobile safety tensioning device usually consists of a tensioning device main body, a long binding strap, a short binding strap, a hook, etc. Among them, the hook connects one end of the long and short binding straps and is connected to the corresponding fastening point of an automobile or other means of transportation. The main body part usually adopts the principle of an anti-reverse rotation ratchet mechanism. The handle directly drives the active pawl, the active pawl pushes the ratchet wheel, and the ratchet wheel directly drives the main rotating shaft, thereby tightening the binding strap wound around the main rotating shaft. The stop pawl is used to prevent the ratchet wheel from reversing, so that the binding strap can maintain a certain tension and bundle and fix the goods.

[0003] In the transportation of a whole automobile, that is, when the goods are an automobile, there is a more special bundling and fixing method. The currently common method is to bundle and fix the tires of the automobile so as to achieve the purpose of fixing the whole vehicle. Reference can be made to Figures 5 - 7 as shown (other parts of the automobile are omitted). In this way, an anti-slip plate is provided on the trailer, and the automobile is directly driven onto the anti-slip plate. There are a number of oblong holes evenly distributed on the anti-slip plate as connection anchor points. The hook of the tensioning device can be hooked into the holes to bundle and fix the tires of the automobile to prevent the movement of the automobile. In this case, three hooks are used. In addition to fixing one with each of the above-mentioned long and short binding straps, a hook is also movably sleeved on the long binding strap. And the existing anti-slip plates are usually made of relatively thin steel plates, and the hooks are usually J-shaped, such as Figure 8 Figure 9 When stressed, the top of the hook part directly contacts the anti-slip plate, which is theoretically a point contact. In this way, a large concentrated tensile force is generated on the contact point of the anti-slip plate, resulting in the anti-slip plate being easily pulled and broken, leading to safety accidents.

[0004] To sum up, it is necessary to further improve the hook of the existing automobile safety tensioning device to reduce or avoid damage to the anti-slip plate. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a rotary hook of an automobile safety tensioning device that can avoid damaging the anti-slip plate according to the above-mentioned current situation of the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows: the rotating hook of the automobile safety tensioning device includes a connecting ring for connecting the webbing; a hook for connecting the anti-slide plate, and the two ends of the hook are respectively set as a connecting end and a hook end. The utility model is characterized in that the connecting end of the hook can be freely rotatably connected to the connecting ring, and the end of the hook end of the hook is provided with an enlarged stopper to increase the contact area between the hook and the anti-slide plate through the stopper, thereby dispersing the pulling force and avoiding concentrated force to damage the anti-slide plate.

[0007] The retaining portion can be formed in various shapes, such as a circular disc or square disc, which can also increase the force-bearing area. However, to facilitate hooking the hook into the long hole of the anti-slide plate, a transverse retaining portion is preferably used, i.e., a transverse retaining portion protruding from both sides of the top of the hook end, and the hook end has a bend adjacent to the transverse retaining portion, so that the rotary hook has an inverted T-shape or a substantially inverted T-shape when viewed from the front, and a J-hook shape or a substantially J-hook shape when viewed from the side. Preferably, the transverse retaining portion is designed as a cylindrical crossbar, which contacts the anti-slide plate when subjected to force. The longer the wings on both sides of the crossbar, the more dispersed the force.

[0008] The hook and the connecting ring are preferably connected by a threaded connection, that is, a thread is provided on the connecting end of the hook, which is passed through a through hole in the connecting ring and then screwed in with a nut. This connection is very convenient. Once connected, the hook can rotate 360 degrees to adapt to different angles of force. The crossbar and the hook are integrally formed and can be cast or forged to ensure strength.

[0009] Of course, other methods can also be used, such as providing the hook's connecting end with an enlarged head for positioning, which allows the hook's connecting end to be connected to the through-hole of the connecting ring through the head, thereby achieving the same hook connection purpose. The head can be welded or integrally formed with the hook, and the crosspiece and the hook can be integrally formed or welded accordingly.

[0010] The connecting ring can be a closed ring, rectangular, trapezoidal, circular, or a combination, but a U-shaped connecting ring is preferred, that is, the connecting ring can include a U-shaped bracket and a connecting rod, the connecting rod is installed on the open side of the U-shaped bracket and forms a closed connecting ring together with the U-shaped bracket, and a through hole is opened on the side wall of the closed side of the U-shaped bracket for connecting the hook.

[0011] The connecting rod is preferably a bolt, which is passed through the opposite side wall of the opening side of the U-shaped bracket and fixed by a nut.

[0012] Compared with the prior art, the advantages of the present invention are: the rotating hook of the automobile safety tensioning device of the present invention adopts a pivotal structure that can rotate relatively between the connecting ring and the hook, so that the hook can rotate 360 degrees, thereby adapting to forces at various angles; and the horizontal bar setting at the hook end increases the contact area between the hook and the anti-skid plate, thereby dispersing the force, avoiding concentrated force and damage to the anti-skid plate, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional exploded schematic diagram of the first embodiment of the present utility model;

[0014] Figure 2 This is a three-dimensional schematic diagram of the first embodiment of the present utility model;

[0015] Figure 3 This is a front view of a first embodiment of the present invention hooked into a non-slip deck;

[0016] Figure 4 This is a left side view of the first embodiment of the present utility model;

[0017] Figure 5 This is a three-dimensional diagram of the application of a bundled tire in Example 1 of the present utility model;

[0018] Figure 6 This is a front view of a tire bundled application in Example 1 of the present utility model;

[0019] Figure 7 This is a bottom view of a tire bundled application according to embodiment 1 of the present invention;

[0020] Figure 8 It is a three-dimensional diagram of the existing hook;

[0021] Figure 9 This is a schematic diagram of concentrated force on an existing hook;

[0022] Figure 10 It is a three-dimensional schematic diagram of the second embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0024] Example 1, combined with Figures 1 - 7 As shown, the automobile safety tensioning device rotary hook 10 is mainly composed of a connecting ring 1 and a hook 2, wherein:

[0025] The connecting ring 1 is a U-shaped connecting ring, which includes a U-shaped bracket 11 and a connecting rod. The connecting rod is a bolt 12 (similar screws or pin shafts, etc. can also be used). The bolt 12 passes through the opposite side walls of the opening side of the U-shaped bracket 11 and is connected and fixed by a nut 13. Thus, the bolt 12 and the U-shaped bracket 11 together form a closed connecting ring 1. A through hole 111 is opened at the center position of the side wall of the closed side of the U-shaped bracket 11 for connecting the hook 2. When in use, the webbing is connected to the bolt of the connecting ring, as Figure 5 shown.

[0026] The hook 2 is a one-piece part. To ensure its strength, it is preferably made by integral casting or forging. In the text, the two ends of the main body of the hook are respectively called the connecting end 21 and the hook end 22. The connecting end 21 is used to connect with the connecting ring 1, and a thread 211 is formed on its outer periphery for connecting the nut 23. An enlarged blocking portion is integrally formed at the end of the hook end 22 to increase the contact area between the hook 2 and the anti-slip plate 30 through this blocking portion, so as to disperse the pulling force and avoid damage to the anti-slip plate 30 due to concentrated force. The blocking portion can be in different forms, such as a disc shape, a square disc shape, etc., which can also increase the stress area. However, for the convenience of the hook to be hooked into the long hole 301 of the anti-slip plate 30, a laterally arranged blocking portion as shown in the figure of this embodiment is preferably used, that is, a lateral blocking portion (i.e., the T-shaped crossbar described in the text) 221 protruding from both sides of the top of the hook end 22, and the hook end 22 is adjacent to the lateral blocking portion 221 and has a bend 222, so that the rotary hook 10 appears as an inverted T shape or basically an inverted T shape when viewed from the front view (as Figure 3 ), and appears as a J-shaped hook or basically a J-shaped hook when viewed from the side view (as Figure 4 ). The purpose of this bend 222 is to enable the hook to adapt to more angles and facilitate on-site adjustment. The lateral blocking portion 221 can be designed as a cylindrical crossbar as shown in this embodiment. When stressed, the contact position with the anti-slip plate is this crossbar. The longer the wings on both sides of the crossbar, the more dispersed the force.

[0027] During assembly, as long as the connecting end 21 of the hook 2 is inserted into the connecting ring 1 through the through hole 111 and then the nut 23 is connected, since the connecting ring 1 and the hook 2 have a pivotable connection structure that can rotate relative to each other, more force application directions and angles can be achieved.

[0028] Figures 5 - 7 Schematically shows the application scenario of this embodiment. In addition to connecting a rotary hook 10 to each of the long and short straps 50 and 60 of the vehicle safety tightening device 40, a rotary hook 10 is also movably sleeved on the long strap 50. When stressed, the T-shaped crossbar 221 of the hook end 21 directly contacts the anti-slip plate 30. In this way, the contact area between the rotary hook 10 and the anti-slip plate 30 is increased, the force is dispersed, and the anti-slip plate is prevented from being damaged due to concentrated force. Therefore, the vehicle tire 20 can be firmly and stably tied and fixed, greatly improving the transportation safety.

[0029] Embodiment 2, as Figure 10 , the shape of the hook 2 is also the J-shaped + T-shaped as described above, but the difference between it and Embodiment 1 is that the connecting end 21 of the hook 2 adopts a non-nut connection method, but there is a radially expanded boss-shaped head 212 at the connecting end 21, and the head 212 can be connected to the hook by welding or integrally formed.

[0030] When the head 212 is integrally formed, during manufacturing, the hook end 22 of the hook needs to pass through the through hole 111 of the U-shaped bracket and then weld the T-shaped crossbar 221. That is, the head 212 at the connecting end of the hook and the main body of the hook are integrated, while the T-shaped crossbar 221 is separately welded to the main body of the hook.

[0031] When the head 212 is welded, during manufacturing, the connecting end 21 of the hook passes through the through hole 111 of the U-shaped bracket and then welds a head with a slightly larger size. That is, the head 212 at the connecting end of the hook and the main body of the hook are separately welded, while the T-shaped crossbar 221 and the main body of the hook are integrated.

[0032] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, various modifications or improvements can be made to the present utility model. For example, the connecting ring can also be directly composed of a closed ring, or the bracket of the connecting ring can be rectangular, trapezoidal, circular, etc., or it can be a combination part, and these are all regarded as within the protection scope of the present utility model.

Claims

1. A rotary hook of an automotive safety tensioning device, comprising a connecting ring for connecting a webbing; a hook for connecting an anti-slip plate, and both ends of the hook are respectively set as a connecting end and a hook end; It is characterized in that: the connecting end of the hook is rotatably connected to the connecting ring, and an enlarged blocking portion is provided at the end of the hook end of the hook to increase the contact area between the hook and the anti-slip plate through the blocking portion.

2. The rotary hook of the vehicle safety tensioning device according to claim 1, wherein: The blocking portion is a transverse blocking portion protruding from both sides of the top of the hook end, and the hook end is provided with a bend adjacent to the transverse blocking portion, so that the rotary hook appears as an inverted T shape or substantially an inverted T shape when viewed from the front view, and appears as a J-shaped hook or substantially a J-shaped hook when viewed from the side view.

3. The rotary hook of the vehicle safety tensioning device according to claim 1 or 2, characterized in that: The connecting end of the hook is provided with a thread, so that the connecting end of the hook passes through a through hole on the connecting ring and is screwed with a nut.

4. The rotary hook of the vehicle safety tensioning device according to claim 1 or 2, characterized in that: The connecting end of the hook is provided with an enlarged head for limiting, and the connecting end of the hook is connected to the through hole of the connecting ring through the head.

5. The rotary hook of the vehicle safety tensioning device according to claim 3, characterized in that: The blocking portion and the hook are integrally formed as one piece.

6. The rotary hook of the vehicle safety tensioning device according to claim 4, characterized in that: The blocking portion and the hook are integrally formed as one piece, and the head is integrally connected to the hook by welding.

7. The rotary hook of the vehicle safety tensioning device according to claim 4, characterized in that: The blocking portion is integrally connected to the hook by welding, and the head and the hook are integrally formed as one piece.

8. The rotary hook of the vehicle safety tensioning device according to claim 2, characterized in that: The transverse blocking portion is a cylindrical cross bar.

9. The rotary hook of the vehicle safety tensioning device according to claim 1, characterized in that: The connecting ring includes a U-shaped bracket and a connecting rod. The connecting rod is installed on the opening side of the U-shaped bracket and forms a closed connecting ring together with the U-shaped bracket. A through hole is opened on the side wall of the closed side of the U-shaped bracket.

10. The rotary hook of the vehicle safety tensioning device according to claim 9, characterized in that: The connecting rod is a bolt, and the bolt passes through the opposite side walls of the opening side of the U-shaped bracket and is fixedly connected by a nut.

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