Magnetic chuck and binding strap with magnetic chuck

Abstract

A magnetic chuck and a binding belt with the magnetic chuck, the magnetic chuck comprises a fixed seat and a magnetic element arranged on the fixed seat, a connecting ring is arranged on the top of the fixed seat, an installation cavity is formed on the side of the fixed seat, the magnetic element is arranged in the installation cavity and fixed on the fixed seat, and the magnetic element has a magnetic surface facing the outside of the fixed seat. One end of a woven belt of the binding belt is sewn on a hook, the woven belt sewing end is formed with a positioning hole, the connecting ring of the magnetic chuck is installed in the positioning hole, the fixed seat of the magnetic chuck is limited on the hook, and the magnetic surface of the magnetic chuck is located on the bending side of the hook. The magnetic chuck is installed on the hook of the binding belt and is limited in the positioning hole of the binding belt, the magnetic surface of the magnetic chuck is located on the bending side of the hook during use, the magnetic chuck is convenient to be attracted to the attracted surface of the anchoring point, the magnetic chuck can be applied to various anchoring points, the operation is simple and fast, and the hook can be prevented from falling off from the anchoring point.

Description

Technical Field

[0001] This utility model relates to a magnetic chuck and a strap with a magnetic chuck in a car safety tensioning device used on vehicles such as automobiles, trailers, airplanes, and ships to secure and fasten goods. Background Technology

[0002] Automotive safety tensioning devices typically consist of a tensioning unit and tie-down straps. The tie-down straps are divided into two parts: a fixed strap and an adjustable strap. Both the fixed and adjustable straps are composed of webbing and metal hooks. One end of the webbing is connected to a metal hook, which connects to the corresponding anchor point on the truck or other transport vehicle. The fixed strap is shorter, with one end connected to the hook and the other to the unit. The adjustable strap is longer, with one end connected to the hook and the other end being a free end that passes through the main shaft of the unit. Adjusting the length from the hook to the unit allows for accommodating different sizes of cargo in different situations. The unit often uses an anti-reverse ratchet mechanism to wrap the webbing around the main shaft and tighten it, securing the cargo. Taking the overhead tying method for trucks, pickups, and other vehicles as an example, the adjustable strap hook is first connected to the anchor point on one side of the cargo box. Then, the adjustable strap is passed over the cargo, with the free end placed on the other side of the cargo box to facilitate the next step of threading the free end through the unit connected to the fixed strap for tying. If only one person is operating the system, the hooks on the adjusting straps are highly likely to detach from the anchor points while the operator is working on the main unit, making subsequent securing operations impossible. Even if the hooks are correctly connected, in extreme situations during transport after securing, the hooks may still come loose, potentially causing cargo to tip over and resulting in a safety accident. To address this issue, some hooks are equipped with elastic safety buckles that form a closed loop with the hook, preventing them from detaching once hooked into the anchor point. However, in some applications, the anchor points of the cargo box are too large or wide to fully fit into the closed loop, making hook detachment unavoidable. In conclusion, further improvements are needed to the existing vehicle safety tensioning devices' straps and hooks to prevent operational inconvenience caused by hook detachment and safety accidents resulting from detachment during transport. Utility Model Content

[0003] The first technical problem to be solved by this utility model is to provide a magnetic chuck with a simple structure that can be assembled onto the hook of a binding strap and attract to the anchor point, in view of the above-mentioned existing technology.

[0004] The second technical problem to be solved by this utility model is to provide a binding strap that makes it difficult for the hook to detach from the anchor point, in light of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a magnetic chuck, including a fixed base and a magnetic component disposed on the fixed base, characterized in that: a connecting ring is provided on the top of the fixed base, an installation cavity is formed on the side of the fixed base, the magnetic component is located in the installation cavity and fixed on the fixed base, and the magnetic component has a magnetic suction surface facing outward of the fixed base.

[0006] Preferably, the connecting ring and the fixing base are either an integral structure or separate structures.

[0007] The connecting ring can take many forms. Preferably, the bottom of the connecting ring is located on the fixed base, and the top of the connecting ring is a closed structure or an open structure.

[0008] To limit the position of the assembled hook, a limiting part is provided on the fixing seat.

[0009] In order for the magnetic surface to be attracted to the surface of the anchor point, the magnetic surface is the front side of the magnetic component.

[0010] More preferably, the limiting part is provided on the left and right sides of the fixed base or on one side of the fixed base.

[0011] Preferably, the limiting part and the connecting ring are arranged offset from each other or aligned with each other in the front-rear direction.

[0012] Further preferably, the limiting part includes a front limiting part and a rear limiting part that are staggered from each other.

[0013] There can be various assembly structures between the magnetic component and the mounting base. Preferably, the main body of the magnetic component is cylindrical, with a threaded nut extending rearward from the rear portion corresponding to the magnetic attraction surface. The mounting base has a mounting hole penetrating the mounting cavity, and a screw passes through the mounting hole from back to front and is threaded onto the nut. Alternatively, the main body of the magnetic component is annular, with a threaded hole in the middle. The mounting base has a mounting hole penetrating the mounting cavity, and a screw passes through the mounting hole from back to front and is threaded onto the threaded hole. Alternatively, the main body of the magnetic component is annular, and the main body of the magnetic component... The magnetic component has a through hole in the middle, through which a screw passes and is fixed to the mounting base from front to back; or, the main body of the magnetic component is annular, with a through hole in the middle, and a mounting hole through the mounting cavity on the mounting base, through which a screw passes and is fixed by a nut, or a rivet passes and is fixed to the mounting base from front to back; or, the main body of the magnetic component is cylindrical, with a stud with external threads extending rearward from the rear part corresponding to the magnetic surface, and a mounting hole through the mounting cavity on the mounting base, through which a nut is screwed into the mounting base from the rear side to fix it to the stud.

[0014] As another preferred embodiment, an elastic element is installed within the mounting cavity. This elastic element elastically abuts against the fixed base and the magnetic element, which is movably connected to the fixed base. Under the elastic force of the elastic element, the magnetic element tends to move outward from the fixed base. With this structure, since the magnetic element is not fixed to the fixed base, it can slide axially back and forth within the mounting hole of the fixed base. Under the force of the elastic element, the magnetic element naturally protrudes outward, making it easier for the magnetic surface to adhere firmly to the surface being attracted. If the magnetic element is subjected to certain pressure during the binding process, it will be compressed back into the fixed base to prevent damage.

[0015] The technical solution adopted by this utility model to solve the second technical problem mentioned above is as follows: a binding strap, including a webbing and a hook, one end of the webbing is sewn onto the hook, and a positioning hole is formed at the sewn end of the webbing, characterized in that: it also includes the magnetic chuck, the connecting ring of the magnetic chuck is installed in the positioning hole, the fixing seat of the magnetic chuck is limited on the hook, and the magnetic suction surface of the magnetic chuck is located on the bent side of the hook.

[0016] To mount the magnetic suction cup on the hook, the hook is a J-shaped hook with a strap hole and a suction cup placement hole. The webbing passes through the strap hole, wraps around, and is sewn. The mounting base of the magnetic suction cup is located in the suction cup placement hole. The strap hole and the suction cup placement hole are either interconnected or separate holes.

[0017] In order to better position the magnetic chuck on the hook and strap, the top of the hook has a connecting crossbar, the top of the connecting ring of the magnetic chuck is located above the connecting crossbar and abuts against the connecting crossbar, the webbing passes through the threading hole and is sewn after wrapping around the connecting crossbar and the connecting ring, and the positioning hole is formed between the two layers of webbing formed after wrapping and the top of the connecting crossbar.

[0018] Compared with the prior art, the advantages of this utility model are as follows: the magnetic chuck has a connecting ring on the top of the fixed base, and an installation cavity is formed on the side of the fixed base. The magnetic component is located in the installation cavity and fixed to the fixed base by the connector. The magnetic component has a magnetic attraction surface facing the outside of the fixed base. The magnetic chuck is installed on the hook of the binding strap and limited in the positioning hole of the binding strap. When in use, the magnetic attraction surface of the magnetic chuck attracts the attraction surface of the anchor point. It can be used for anchor points in a variety of different occasions. The operation is simple and quick and can prevent the hook from falling off the anchor point. Attached Figure Description

[0019] Figure 1 This is a three-dimensional exploded view of a first embodiment of the binding strap with a magnetic chuck of the present invention.

[0020] Figure 2aThis is a frontal perspective exploded view of Embodiment 1 of the magnetic chuck of this utility model;

[0021] Figure 2b This is an exploded perspective view of the back of Embodiment 1 of the magnetic chuck of this utility model;

[0022] Figure 3a This is a three-dimensional schematic diagram of the closed connecting ring of Embodiment 1 of the magnetic chuck of this utility model;

[0023] Figure 3b This is a three-dimensional schematic diagram of a semi-enclosed connecting ring in an embodiment of the magnetic chuck of this utility model.

[0024] Figure 3c This is a three-dimensional schematic diagram of the open-type connecting ring of Embodiment 1 of the magnetic chuck of this utility model;

[0025] Figure 4 This is a cross-sectional view of a first embodiment of the magnetic chuck of this utility model;

[0026] Figure 5a This is an exploded perspective view of Embodiment 2 of the magnetic chuck of this utility model;

[0027] Figure 5b This is a cross-sectional view of Embodiment 2 of the magnetic chuck of this utility model;

[0028] Figure 6a This is an exploded perspective view of Embodiment 3 of the magnetic chuck of this utility model;

[0029] Figure 6b This is a cross-sectional view of Embodiment 3 of the magnetic chuck of this utility model;

[0030] Figure 7a This is an exploded perspective view of Embodiment 4 of the magnetic chuck of this utility model;

[0031] Figure 7b This is a cross-sectional view of Embodiment 4 of the magnetic chuck of this utility model;

[0032] Figure 8a This is an exploded perspective view of Embodiment 5 of the magnetic chuck of this utility model;

[0033] Figure 8b This is a cross-sectional view of Embodiment 5 of the magnetic chuck of this utility model;

[0034] Figure 9a This is an exploded perspective view of Embodiment Six of the Magnetic Chuck of this utility model;

[0035] Figure 9b This is a cross-sectional view of the extended state of Embodiment Six of the Magnetic Chuck of this utility model;

[0036] Figure 9cThis is a cross-sectional view of the compressed state of Embodiment Six of the Magnetic Chuck of this utility model;

[0037] Figure 10 This is a three-dimensional schematic diagram of the first embodiment of the binding strap with magnetic suction cup of this utility model before assembly;

[0038] Figure 11a This is a three-dimensional view of the front of the assembled binding strap with magnetic suction cup according to Embodiment 1 of this utility model;

[0039] Figure 11b This is a three-dimensional view of the front of the assembled binding strap with magnetic suction cup according to Embodiment 1 of this utility model;

[0040] Figure 12a This is a front view of a first embodiment of the binding strap with a magnetic suction cup of this utility model;

[0041] Figure 12b This is a front view of an embodiment of the binding strap with a magnetic suction cup of the present invention, showing the strap hole and suction cup placement hole separated.

[0042] Figure 13 This is a cross-sectional view of a first embodiment of the binding strap with a magnetic suction cup of this utility model;

[0043] Figure 14a This is an application diagram of the first embodiment (plate anchor point) of the binding strap with magnetic suction cup of this utility model;

[0044] Figure 14b This is an application diagram of the first embodiment (ring anchor point) of the binding strap with magnetic suction cup of this utility model;

[0045] Figure 15 This is an exploded perspective view of Embodiment 2 of the binding strap with magnetic suction cup of this utility model;

[0046] Figure 16 This is an exploded perspective view of Embodiment 3 of the binding strap with magnetic suction cup of this utility model;

[0047] Figure 17 This is an exploded perspective view of Embodiment 3 of the binding strap with magnetic suction cup of this utility model;

[0048] Figure 18 This is a rear perspective view of Embodiment 3 of the binding strap with magnetic suction cup of this utility model;

[0049] Figure 19 This is a schematic diagram of the structure of Embodiment 3 of the binding strap with magnetic suction cup of this utility model;

[0050] Figure 20 for Figure 19 The diagram shows the structure of the magnetic chuck used in the binding strap. Detailed Implementation

[0051] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0052] Example 1:

[0053] As shown in Figure 2 to Figure 4 As shown, the magnetic chuck 3 in this embodiment includes a magnetic component 31, a fixing base 32, a connecting ring 33, and a screw 34. The magnetic component is a magnet 31, preferably a pot magnet, composed of a permanent magnet, a steel shell, and a magnetic shield. The permanent magnet is located at the center, and the steel shell is on the periphery, separated by the magnetic shield. The advantage of the pot magnet is that the steel shell converges and guides the magnetic field of the permanent magnet, concentrating the dispersed magnetic field on the magnetic suction surface 311, reducing circumferential magnetic leakage, thereby significantly increasing the adsorption force per unit volume. Pot magnets come in various shapes, such as round, rectangular, polygonal, and irregular shapes, with a round pot magnet being the preferred shape in this invention. It should be noted that pot magnets, as a common form of magnet in the market, have publicly available and mature structural features and functional advantages, which will not be elaborated further.

[0054] A mounting cavity 321 is formed on the side of the fixing base 32. The magnetic component 31 is located in the mounting cavity 321 and fixed on the fixing base 32. The magnetic component 31 and the fixing base 32 are detachably connected, and the magnetic attraction surface 311 of the magnetic component 31 faces the outside of the fixing base 32. Limiting portions 322 are protruding on both the left and right sides of the fixing base 32. The limiting portions 322 and the connecting ring 33 are staggered in the front-back direction. In this embodiment, the magnetic attraction surface 311 is the front side of the magnetic component 31, the limiting portion 322 is located at the front of the fixing base 32, and the connecting ring 33 is located at the rear of the fixing base 32. The limiting portion 322 and the connecting ring 33 serve as limits after assembly with the hook 2 to prevent the magnetic chuck 3 from separating from the hook 2.

[0055] The connecting ring 33 is located on top of the fixing base 32, and can be an integral or separate structure from the fixing base 32. The connecting ring 33 can have various structures, such as... Figure 3a As shown, the top of the connecting ring 33 is a fully enclosed structure; as Figure 3b As shown, it is a semi-enclosed structure; the combined part can be opened to create an opening. Figure 3c As shown, this is an open structure. Combined with... Figure 1 As shown, when connecting with webbing 1 and hook 2, the fully enclosed connecting ring 33 must be installed with hook 2 first and then sewn together with webbing 1. The semi-enclosed connecting ring 33 and the open connecting ring 33 can be installed separately after webbing 1 and hook 2 are sewn together, which is beneficial for selling magnetic suction cup 3 separately.

[0056] In this embodiment, the main body of the magnetic component 31 is cylindrical, specifically cylindrical. A nut column 312 with internal threads extends rearward from the rear part corresponding to the magnetic attraction surface 311. The fixing base 32 has a mounting hole 323 that penetrates the mounting cavity 321. The screw 34 passes through the mounting hole 323 from back to front and is threaded onto the nut column 312, thereby fixing the magnetic component 3 to the fixing base 32.

[0057] Example 2:

[0058] like Figure 5a and Figure 5b As shown, the main body of the magnetic component 31 in this embodiment is ring-shaped, and a threaded hole 313 is opened in the middle of the magnetic component 31. The mounting hole 323 through the mounting cavity 321 is opened on the fixing base 32. The screw 34 passes through the mounting hole 323 from back to front and is threaded onto the threaded hole 313, thereby fixing the magnetic component 3 to the fixing base 32.

[0059] Example 3:

[0060] like Figure 6a and Figure 6b As shown, the main body of the magnetic component 31 in this embodiment is ring-shaped, and a through hole 314 with a chamfer is opened in the middle of the main body of the magnetic component 31. The screw 34 passes through the through hole 314 from front to back and is fixed on the fixing base 32. In this embodiment, the screw 34 is a self-tapping screw, which can be directly screwed into the fixing base 32.

[0061] Example 4:

[0062] like Figure 7a and Figure 7b As shown, the main body of the magnetic component 31 in this embodiment is ring-shaped, with a through hole 314 in the middle. The mounting base 32 has a mounting hole 323 that penetrates the mounting cavity 321. The screw 34 passes through the through hole 314 and the mounting hole 323 from front to back and is fixedly connected by a nut 35. Compared with Embodiment 3, the magnetic component 31 in this embodiment is the same, but the screw 34 is not a self-tapping screw, but a screw with ordinary threads. This method is adopted because the magnetic component 3 in this embodiment has no threads. In addition, besides the screw and nut method, it can also be fixed directly with a rivet. For example, the rivet passes through the through hole 314 and the mounting hole 323 from front to back and is fixedly connected to the mounting base 32.

[0063] Example 5:

[0064] like Figure 8a and Figure 8b As shown, the main body of the magnetic component 31 in this embodiment is cylindrical, specifically cylindrical. A stud 315 with external threads extends rearward from the rear part corresponding to the magnetic attraction surface 311. The fixing base 32 has a mounting hole 323 that penetrates the mounting cavity 321. The nut 35 is screwed into the fixing base 32 from the rear side and fixed to the stud 315.

[0065] Example 6:

[0066] like Figure 9a , Figure 9b and Figure 9c As shown, in this embodiment, an elastic element 36 is installed in the mounting cavity 321 of the fixed base 32. The elastic element 36 is specifically a spring. The elastic element 36 is elastically abutted between the fixed base 32 and the magnetic element 31. The magnetic element 31 is movably connected to the fixed base 32, that is, the magnetic element 31 is not fixed to the fixed base 32. The magnetic element 31 can slide back and forth axially in the mounting cavity 321 of the fixed base 32.

[0067] Under the elastic force of the elastic element 36, the magnetic element 31 tends to move outward toward the fixed base 32. Referring to Embodiment 1, a nut post 312 with internal threads extends rearward from the rear of the magnetic surface 311. The fixed base 32 has a mounting hole 323 that penetrates the mounting cavity 321. The screw 34 passes through the mounting hole 323 from back to front and is threaded onto the nut post 312, thereby fixing the magnetic element 3 to the fixed base 32. A washer 37 is installed between the screw 34 and the fixed base 32. Figure 9b As shown, under the force of the spring, the magnetic component 31 protrudes outward in its natural state, making it easier for the magnetic surface 311 to adhere firmly to the surface being attracted. Figure 9c As shown, if the magnetic surface 311 is subjected to a certain pressure during the binding process, it will be compressed back into the fixed seat 32 to avoid the magnetic surface 311 being crushed.

[0068] like Figure 1 As shown, the binding strap of this utility model includes a webbing 1, a hook 2, and a magnetic suction cup 3. One end of the webbing 1 is sewn onto the hook 2 by a sewing thread 12. The top of the hook 2 has a connecting crossbar 21, and the bottom of the connecting crossbar 21 is provided with a strap hole 22 and a suction cup placement hole 23. The specific structure of the binding strap is described in detail through the following embodiments.

[0069] Example 1:

[0070] like Figures 10 to 13As shown, the hook in this embodiment is a double-strand J-shaped hook formed by bending wire. The connecting crossbar 21 and the two sides form a cavity. The upper part serves as a strap hole 22, through which the webbing 1 is threaded and wrapped back, then sewn and fixed with sewing thread 12. The lower part is a suction cup placement hole 23 for the mounting base 32 of the magnetic suction cup 31 to be placed. After the magnetic suction cup 31 is installed, the magnetic suction surface 311 of the magnetic suction cup 3 faces the bending direction of the J-shaped hook, that is, towards the inside of the J-shaped hook. In this embodiment, the strap hole 22 and the suction cup placement hole 23 are connected together, with the strap hole 22 at the top and the suction cup placement hole 23 at the bottom. Alternatively, the strap hole 22 and the suction cup placement hole 23 can be made into two separate holes, with the strap hole 22 located at the top and the suction cup placement hole 23 located at the bottom.

[0071] After the magnetic chuck 3 is inserted into the hook 2, the top of the connecting ring 33 is positioned above and close to the connecting crossbar 21. The webbing 1 passes through the threading hole 22, wraps around the connecting crossbar 21 and the connecting ring 33, and then folds back, sewing it together with the sewing thread 12. This connects the webbing 1, hook 2, and magnetic chuck 3 together. The two layers of webbing 21 folded back together with the top of the connecting crossbar 21 form an approximately triangular cavity, serving as the positioning hole 11 for the connecting ring 33. Figure 3b and Figure 3c The semi-closed and open connecting rings 33 shown can be inserted into the positioning hole 11 after the webbing 1 and hook 2 are sewn together.

[0072] After the magnetic chuck 3 is installed, the limiting part 322 and the connecting ring 33 are positioned on the front and rear sides of the hook 2, respectively, to prevent the magnetic chuck 3 from separating from the hook 2 and to keep their positions relatively fixed. Of course, the limiting part 322 is not essential. Without the limiting part 322, the magnetic chuck 3 will swing around the positioning hole 11, but this will not affect the normal use of the strap.

[0073] like Figure 14a and Figure 14b As shown, when in use, the hook 2 of the strap hooks onto the anchor point 4, and at the same time the magnetic surface 311 is placed close to the appropriate position of the anchor point 4, so that the hook 2 will not fall off, making it convenient for the operator to carry out the next operation.

[0074] In addition, there are various forms of anchor points 4. Only the plate type and ring type commonly used on trucks are shown here. In fact, any anchor point that can be made of magnetic iron-based metal can be used.

[0075] Example 2:

[0076] like Figure 15 As shown, the hook 2 in this embodiment is a single-strand J-type hook, and the other structures are the same as in Embodiment 1, so they will not be described again here.

[0077] Example 3:

[0078] like Figures 16 to 18 As shown, the hook 2 in this embodiment is a J-shaped flat hook made of bent steel plate, with a strap hole 22 and a suction cup placement hole 23. The strap hole 22 and the suction cup placement hole 23 can be two separate holes or a single connected hole. Other structures are the same as in Embodiment 1, and will not be described again here.

[0079] Example 4:

[0080] like Figure 19 and Figure 20 As shown, in this embodiment, the fixing base 32 of the magnetic chuck 3 is provided with limiting parts on both the front and rear sides, namely, a front limiting part 324 located on the front side of the fixing base 32 and a rear limiting part 325 located on the rear side. After installation, the hook 2 is limited between the front limiting part 324 and the rear limiting part 325, making the limiting more reliable. The rest of the structure of this embodiment is the same as that of Embodiment 1, and will not be described again here.

[0081] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0082] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, various modifications or improvements can be made to the present utility model without departing from the principle of the present utility model. For example, in addition to the above-described fixing method, the magnetic component and the fixing base can also be connected and fixed by other methods. In addition to the structure given in the above embodiments, the structure of the hook can also adopt other different structures. In addition, the limiting part on the fixing base is not limited to the structure given in the above embodiments. All of these are considered to be within the protection scope of the present utility model.

Claims

1. A magnetic chuck comprising a fixed base (32) and a magnetic member (31) provided on the fixed base (32), characterized in that: A connecting ring (33) is provided on the top of the fixing base (32), and a mounting cavity (321) is formed on the side of the fixing base (32). The magnetic element (31) is located in the mounting cavity (321) and fixed on the fixing base (32). The magnetic element (31) has a magnetic attraction surface (311) facing the outside of the fixing base (32).

2. The magnetic chuck as set forth in claim 1, further characterized by: The connecting ring (33) and the fixing seat (32) are either an integral structure or separate structures.

3. The magnetic chuck as set forth in claim 1, further characterized by: The bottom of the connecting ring (33) is located on the fixed base (32), and the top of the connecting ring (33) is a closed structure or an open structure.

4. The magnetic chuck as set forth in claim 1, further characterized by: A limiting part (322) is protruding on the fixed base (32).

5. The magnetic chuck according to claim 4, characterized in that: The magnetic surface (311) is the front side of the magnetic component (31).

6. The magnetic chuck as set forth in claim 1, further characterized by: The main body of the magnetic component (31) is cylindrical, and a nut post (312) with internal threads extends rearward from the rear part corresponding to the magnetic suction surface (311). The fixing base (32) has a mounting hole (323) that penetrates the mounting cavity (321). The screw (34) passes through the mounting hole (323) from back to front and is threaded onto the nut post (312); or, the main body of the magnetic component (31) is annular, and a threaded hole (313) is opened in the middle of the magnetic component (31). The fixing base (32) has a mounting hole (323) that penetrates the mounting cavity (321). The screw (34) passes through the mounting hole (323) from back to front and is threaded onto the threaded hole (313); or, the main body of the magnetic component (31) is annular, and a through hole (314) is opened in the middle of the main body of the magnetic component (31). The screw (34) passes through the through hole from front to back. 314) and fixed on the fixing seat (32); or, the main body of the magnetic component (31) is ring-shaped, and a through hole (314) is opened in the middle of the main body of the magnetic component (31), and a mounting hole (323) is opened on the fixing seat (321) through the mounting cavity (321), and a screw (34) passes through the through hole (314) and the mounting hole (323) from front to back and is fixedly connected by a nut (35), or a rivet passes through the through hole (314) and the mounting hole (323) from front to back and is fixedly connected to the fixing seat (32); or, the main body of the magnetic component (31) is cylindrical, and a stud (315) with external threads extends backward from the rear part corresponding to the magnetic suction surface (311), and a mounting hole (323) is opened on the fixing seat (321) through the mounting cavity (321), and a nut (35) is screwed into the fixing seat (32) from the rear side and fixed to the stud (315).

7. The magnetic chuck as set forth in claim 1, further characterized by: An elastic element (36) is installed in the mounting cavity (321). The elastic element (36) is elastically abutted between the fixed seat (32) and the magnetic element (31). The magnetic element (31) is movably connected to the fixed seat (32). Under the elastic force of the elastic element (36), the magnetic element (31) tends to move outward from the fixed seat (32).

8. A binding strap comprising a webbing (1) and a hook (2), one end of the webbing (1) being sewn to the hook (2), the sewn end of the webbing (1) being formed with a positioning hole (11), characterized in that: It also includes a magnetic chuck (3) as described in any one of claims 1 to 7, wherein the connecting ring (33) of the magnetic chuck (3) is installed in the positioning hole (11), the fixing seat (32) of the magnetic chuck (3) is limited on the hook (2), and the magnetic suction surface (311) of the magnetic chuck (3) is located on the bent side of the hook.

9. The bundling strap of claim 8, wherein: The hook (2) is a J-shaped hook, and the hook (2) has a strap hole (22) and a suction cup placement hole (23). The webbing (1) passes through the strap hole (22) and wraps back before being sewn. The fixing seat of the magnetic suction cup (3) is located in the suction cup placement hole (23). The strap hole (22) and the suction cup placement hole (23) are connected to each other or are separate holes.

10. The bundling strap of claim 8, wherein: The top of the hook (2) has a connecting crossbar (21). The top of the connecting ring (33) of the magnetic suction cup (3) is located above the connecting crossbar (21) and abuts against the connecting crossbar (21). The webbing (1) passes through the threading hole (22) and is sewn after being wrapped around the connecting crossbar (21) and the connecting ring (33). The positioning hole (11) is formed between the two layers of webbing formed after being wrapped around and the top of the connecting crossbar (21).

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