Wristband assembly structure and wristband wearable device

Abstract

The present invention provides an assembly structure and a wristband wearable device, wherein the assembly structure includes an assembly body (such as a wristband), a middle cover and a lower cover; the assembly body has a receiving cavity, and after the middle cover is installed into the receiving cavity, an installation space is formed between the middle cover and the bottom of the receiving cavity; the installation space is used to install a part to be fixed, and when the part to be fixed is installed in the installation space, the middle cover can squeeze the part to be fixed to achieve preliminary fixation; the lower cover is covered on the outer wall of the middle cover, and is welded and fixed with the middle cover, and the protruding structure set on the side wall of the receiving cavity is squeezed and fixed, thereby achieving fixation of the middle cover, the lower cover and the assembly body, and then achieving a firm assembly of the part to be fixed. The assembly structure of the present invention does not need to perform secondary injection molding on the assembly body (such as a wristband), does not use locking parts such as nuts and bolts, and does not use adhesives, so it has a simple structure, high assembly efficiency, and good firmness, and is very suitable for the assembly of products with non-detachable requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of wearable medical devices, and in particular to a wristband assembly structure and a wristband-type wearable device. Background Art

[0002] Epilepsy is a chronic, recurrent, transient brain dysfunction syndrome caused by brain dysfunction, characterized by abnormal discharges of brain neurons causing recurrent epileptic seizures, with the most common form of seizures being whole-body convulsions. Epilepsy is a disease with a high disability rate, a long course of illness, and clinical recurrent seizures, which seriously threatens the physical and mental health of patients. The main treatments for epilepsy include drug therapy, surgical treatment, traditional Chinese medicine treatment, and radiotherapy. In 1985, in an animal study of the physiological function of the vagus nerve, it was found that different intensities of stimulation of the vagus nerve would cause different changes in the electroencephalogram, which was the first time that the use of vagus nerve electrical stimulation to treat epilepsy was proposed.

[0003] The Vagus Nerve Stimulation (VNS) system is an implantable micro-pulse generator system used to treat drug-resistant epilepsy. It stimulates the vagus nerve to reduce irregular brain discharges that cause epilepsy by sending electrical pulses through electrodes to the vagus nerve in the left neck, thereby controlling epileptic symptoms and seizure frequency. It is mainly composed of a pulse generator, spiral electrodes, and a programmable remote control head. Under normal conditions, the pulse generator does not work. The pulse generator can be turned on and off by controlling the external control magnet, thereby achieving the therapeutic effect.

[0004] For ease of use, the control magnet is generally designed inside the wristband, so that the patient can control the switch of the pulse generator at any time, thereby stimulating the vagus nerve in time and controlling epileptic symptoms and seizure frequency. In order to assemble the control magnet inside the wristband, the commonly used methods in the prior art include: secondary injection molding of the wristband; fixing with screws, nuts and other locking parts; fixing with adhesive, etc. However, these assembly methods are either complex in structure or not strong enough, and therefore not ideal. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of the prior art that the control magnet is assembled into the inside of the wristband, which is complex in structure or insufficient in firmness, thereby providing a wristband assembly structure with simple structure and good assembly firmness.

[0006] The present invention also provides a wristband wearable device assembled using the wristband assembly structure.

[0007] To this end, the present invention provides a wristband assembly structure, comprising:

[0008] An assembly body having a receiving cavity;

[0009] A middle cover, which can be installed into the accommodating cavity, and an installation space suitable for placing a to-be-fixed component is formed between the middle cover and the bottom of the accommodating cavity;

[0010] The lower cover is covered on the outer wall of the middle cover and is fixed to the middle cover by welding; at least two opposite side walls of the accommodating cavity are provided with protruding structures, and the protruding structures extend between the middle cover and the lower cover and are fixed.

[0011] As a preferred solution, along the longitudinal direction of the assembly body, the accommodating cavity has two opposite first side walls, at least one of the first side walls is provided with a first protrusion, and the first protrusion extends between the middle cover and the lower cover and is fixed.

[0012] As a preferred solution, at least one fixing through hole is formed on the first protrusion, and a portion of the middle cover and / or the lower cover is welded and connected in or through the fixing through hole.

[0013] As a preferred solution, three fixing through holes are formed on the first protrusion;

[0014] One end of the middle cover opposite to the first protruding portion is provided with two bent portions and a straight portion, and the straight portion is located between the two bent portions;

[0015] After the middle cover is installed into the accommodating cavity, the two bent portions extend into the fixing through hole, and one straight portion extends into the lower part of the fixing through hole;

[0016] The lower cover is provided with three insertion parts, which are respectively inserted into the three fixing through holes, and are contacted with the ends of the two bending parts and one straight part for welding and fixing.

[0017] As a preferred solution, the top surface of the first protrusion is substantially flush with the top surface of the middle cover;

[0018] The two bent portions and the one straight portion bend downward from one end of the middle cover into the installation space, and then extend below the fixing through hole or further extend into the interior.

[0019] As a preferred solution, along the transverse direction of the assembly body, the accommodating cavity has two opposite second side walls, and a second protrusion is provided on at least one of the second side walls; a notch is provided on the middle cover portion opposite to the second protrusion, the second protrusion extends into the notch, and a limiting hole is provided on the second protrusion;

[0020] The lower cover is provided with a limiting portion;

[0021] When the lower cover and the middle cover are welded and fixed, the limiting portion is inserted into the limiting hole.

[0022] As a preferred solution, a limiting flange is formed on the second side wall, and after the middle cover is installed into the accommodating cavity, the limiting flange contacts the edge of the outer wall of the middle cover to limit and fix the middle cover.

[0023] As a preferred solution, a limiting flange, a second protrusion and a limiting flange are sequentially arranged on the second side wall along the longitudinal direction of the assembly body; and the bottom surface of the limiting flange is substantially flush with the top surface of the second protrusion.

[0024] As a preferred solution, the middle cover is divided into a first sub-middle cover and a second sub-middle cover, and the first sub-middle cover and the second sub-middle cover are connected by a matching structure at a position between the two second protrusions.

[0025] As a preferred solution, the matching structure includes a first lug and a first recessed groove arranged on the first sub-middle cover, and a second recessed groove and a second lug on the second sub-middle cover;

[0026] A first matching hole is provided on the first lug, and a first matching column is provided inside the first recessed groove;

[0027] A second matching hole is provided on the second lug, and a second matching column is provided inside the second recessed groove;

[0028] When the first sub-middle cover and the second sub-middle cover are connected in cooperation, the first lug on the first sub-middle cover is sleeved on the second matching column of the second recessed groove of the second sub-middle cover through the first matching hole; the second lug on the second sub-middle cover is sleeved on the first matching column of the first recessed groove of the first sub-middle cover through the second matching hole.

[0029] As a preferred solution, at least two positioning holes are provided on the middle cover, which are opposite to the at least two positioning posts on the lower cover;

[0030] When the lower cover is covered on the middle cover, the positioning post is inserted into the positioning hole to achieve precise positioning.

[0031] As a preferred solution, at least one connecting groove is provided on the outer wall of the middle cover, and at least one connecting ridge is provided on the inner wall of the lower cover, and the connecting ridge is inserted into the connecting groove and fixed by welding.

[0032] As a preferred solution, the middle cover and the lower cover are welded by ultrasonic welding.

[0033] The present invention also provides a wristband wearable device, comprising a wristband and a permanent magnet, wherein the wristband serves as an assembly body, and the permanent magnet serves as the part to be fixed, and is assembled by the wristband assembly structure as described in any one of the above items.

[0034] The technical solution provided by the present invention has the following advantages:

[0035] 1. The wristband assembly structure of the present invention comprises an assembly body (such as a wristband), a middle cover and a lower cover; wherein the assembly body has a receiving cavity, and after the middle cover is installed into the receiving cavity, an installation space is formed between the middle cover and the bottom of the receiving cavity; the installation space is used to install the parts to be fixed, and when the parts to be fixed are installed in the installation space, the middle cover can squeeze the parts to be fixed to achieve preliminary fixation; the lower cover is covered on the outer wall of the middle cover, and is welded and fixed to the middle cover, and the protruding structure set on the side wall of the receiving cavity is squeezed and fixed, thereby achieving the fixation of the middle cover, the lower cover and the assembly body, and then achieving the firm assembly of the parts to be fixed. The wristband assembly structure of the present invention does not require secondary injection molding of the assembly body (such as a wristband), nor does it use locking parts such as nuts and bolts, and even less does it use adhesives, so it has a simple structure, high assembly efficiency, and good firmness, and is very suitable for the assembly of products with non-detachable requirements.

[0036] 2. The wristband assembly structure of the present invention has first protrusions at two first side wall positions that are relatively arranged along the longitudinal direction of the assembly body. During assembly, the first protrusions are extended between the middle cover and the lower cover and fixed, thereby achieving a firm connection at the first side wall positions.

[0037] 3. In the wristband assembly structure of the present invention, at least one fixing through hole is formed on the first protrusion, and a portion of the middle cover and / or the lower cover is welded and connected in or through the fixing through hole. In this way, a more secure connection can be achieved at the first side wall position.

[0038] 4. The wristband assembly structure of the present invention has three fixed through holes formed on the first protrusion, and one end of the middle cover opposite to the first protrusion is provided with two bent portions and one straight portion. After the middle cover is assembled into the accommodating cavity, the bent portion and the straight portion extend into the lower part or the inner part of the fixed through hole; the lower cover is provided with three insertion portions, and when the lower cover and the middle cover are welded, the three insertion portions are inserted into the inner part of the fixed through hole and are respectively welded and connected with the two bent portions and one straight portion; this connection method not only has a firm connection, but also transfers the position of the connection point to the inner part or the lower part of the fixed through hole, making the product appearance neat and beautiful.

[0039] 5. In the wristband assembly structure of the present invention, the top surface of the first protrusion is substantially flush with the top surface of the middle cover, and both the bent portion and the straight portion are bent downward from one end of the middle cover into the installation space, and then extend into the bottom or inside of the fixed through hole. This arrangement reduces the thickness of the assembled product and makes it appear thinner and lighter.

[0040] 6. The wristband assembly structure of the present invention is provided with a second protrusion on the two second side walls of the accommodating cavity along the horizontal direction of the assembly body; a notch is provided in the middle cover portion opposite to the second protrusion, the second protrusion extends into the notch, and a limiting hole is provided on the second protrusion; a limiting portion is provided at a corresponding position on the lower cover; when the lower cover and the middle cover are welded and fixed, the limiting portion is inserted into the limiting hole to realize the horizontal assembly and fixation of the assembly body; the setting of the notch further reduces the thickness of the product after assembly.

[0041] 7. In the wristband assembly structure of the present invention, a limiting flange is formed on the second side wall. After the middle cover is installed into the accommodating cavity, the limiting flange contacts the edge of the outer wall of the middle cover, which can preliminarily limit and fix the middle cover to facilitate the subsequent welding of the middle cover and the lower cover.

[0042] 8. The wristband assembly structure of the present invention has a limiting flange, a second protrusion and a limiting flange arranged in sequence on the second side wall along the longitudinal direction of the assembly body; and the bottom surface of the limiting flange is basically flush with the top surface of the second protrusion. This arrangement not only satisfies the function of connection and fixation, but also ensures the lightness and thinness of the assembled product.

[0043] 9. In the wristband assembly structure of the present invention, the middle cover is divided into a separate body, including a first sub-middle cover and a second sub-middle cover, and the two sub-middle covers are connected by a matching structure at a position between the two second protrusions; the middle cover is divided into a separate body, so that the middle cover can be easily installed under the limiting flange.

[0044] 10. In the wristband assembly structure of the present invention, at least two positioning holes are provided on the middle cover, and at least two positioning posts are provided on the lower cover. When the lower cover and the middle cover are welded together, the positioning posts are plugged into the positioning holes to achieve precise positioning.

[0045] 11. The present invention also provides a wristband wearable device, comprising a wristband and a permanent magnet, wherein the wristband is used as an assembly body, and the permanent magnet is used as a to-be-fixed part, and the wristband is assembled by the above-mentioned wristband assembly structure. Due to the adoption of the above-mentioned wristband assembly structure, the above-mentioned wristband assembly structure has all the advantages brought by the adoption of the above-mentioned wristband assembly structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the prior art or the specific implementation manner of the present invention, the drawings used in the description of the prior art or the specific implementation manner are briefly introduced below.

[0047] Figure 1 It is a schematic diagram of the overall structure of the wristband wearable device of the present invention.

[0048] Figure 2 yes Figure 1 Another stereoscopic view of .

[0049] Figure 3 Yes Figure 1 Schematic diagram of the structure after the lower cover is exploded and removed.

[0050] Figure 4 yes Figure 2 Schematic diagram of the explosion structure.

[0051] Figure 5 It is a three-dimensional diagram of the first or second sub-middle cover.

[0052] Figure 6 It is a three-dimensional diagram of the lower cover.

[0053] Figure 7 It is a three-dimensional image of the wristband.

[0054] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of part A.

[0055] 1. Assembly body; 10. Accommodating cavity; 11. First side wall; 111. First protrusion; 112. Fixing through hole; 12. Second side wall; 121. Second protrusion; 122. Limiting hole; 123. Limiting flange; 2. Middle cover; 201. Bending portion; 202. Straight portion; 203. Notch; 21. First sub-middle cover; 211. First lug; 212. First recessed groove; 213. First matching hole; 214. First matching column; 22. Second sub-middle cover; 221. Second lug; 222. Second recessed groove; 223. Second matching hole; 224. Second matching column; 23. Positioning hole; 24. Connecting groove; 3. Lower cover; 31. Insertion portion; 32. Limiting portion; 33. Positioning column; 34. Connecting convex strip; 4. Part to be fixed; 5. Installation space. DETAILED DESCRIPTION

[0056] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings.

[0057] Example 1

[0058] This embodiment provides a wristband assembly structure, referring to Figure 1-3 As shown, it includes: an assembly body 1 (a wristband in this embodiment, as shown in the figure), which has a accommodating cavity 10; a middle cover 2, which can be installed into the accommodating cavity 10, and an installation space 5 suitable for placing a to-be-fixed part 4 is formed between the middle cover 2 and the bottom of the accommodating cavity 10; a lower cover 3, which covers the outer wall of the middle cover 2 and is welded and fixed to the middle cover 2; at least two opposite side walls of the accommodating cavity 10 are provided with a protruding structure, and the protruding structure extends between the middle cover 2 and the lower cover 3 and is fixed.

[0059] In the wristband assembly structure of this embodiment, after the middle cover 2 is installed into the accommodating cavity 10, an installation space 5 is formed between the middle cover 2 and the bottom of the accommodating cavity 10; the installation space 5 is used to install the part to be fixed 4. When the part to be fixed 4 is installed in the installation space 5, the middle cover 2 can squeeze the part to be fixed 4 to achieve preliminary fixation; the lower cover 3 covers the outer wall of the middle cover 2 and is welded and fixed to the middle cover 2, and the protruding structure set on the side wall of the accommodating cavity 10 is squeezed and fixed, thereby achieving the fixation of the middle cover 2, the lower cover 3 and the assembly body 1, and then achieving the firm assembly of the part to be fixed 4. The wristband assembly structure of this embodiment does not need to perform secondary injection molding on the assembly body 1 (such as a wristband), nor does it use locking parts such as nuts and bolts, and even less does it use adhesives. Therefore, it has a simple structure, high assembly efficiency, and good firmness, and is very suitable for the assembly of products with non-detachable requirements.

[0060] refer to Figure 4 , 7 As shown in FIG8 , along the longitudinal direction of the assembly body 1 (i.e., the length direction of the wristband), the accommodating cavity 10 has two opposite first side walls 11, and first protrusions 111 are provided on the two first side walls 11. The first protrusions 111 extend between the middle cover 2 and the lower cover 3 and are fixed, thereby realizing a firm connection of the position of the first side walls 11.

[0061] At least one fixing through hole 112 is formed on the first protrusion 111 , and a portion of the middle cover 2 and / or the lower cover 3 is welded in or through the fixing through hole 112 .

[0062] Specifically, three fixing through holes 112 are formed on the first protrusion 111; two bent portions 201 and a straight portion 202 are provided at one end of the middle cover 2 opposite to the first protrusion 111, and the straight portion 202 is located between the two bent portions 201; after the middle cover 2 is installed into the accommodating cavity 10, the two bent portions 201 extend into the fixing through holes 112, and one straight portion 202 extends into the lower portion of the fixing through hole 112; three insertion portions 31 are provided on the lower cover 3, which are respectively inserted into the three fixing through holes 112, and contact and weld with the ends of the two bent portions 201 and one straight portion 202. This connection method not only has a firm connection, but also transfers the position of the connection point to the inside or lower portion of the fixing through hole 112, making the product appearance neat and beautiful.

[0063] refer to Figure 3-5As shown, the top surface of the first protrusion 111 is substantially flush with the top surface of the middle cover 2; the two bent portions 201 and one straight portion 202 are bent downward from one end of the middle cover 2 into the installation space 5, and then extend below the fixing through hole 112 or further into the interior. This arrangement reduces the thickness of the assembled product and makes it appear thinner and lighter.

[0064] Along the transverse direction of the assembly body 1 (i.e. the width direction of the wristband in the figure), the accommodating cavity 10 has two opposite second side walls 12, and a second protrusion 121 is provided on the two second side walls 12; the part of the middle cover 2 opposite to the second protrusion 121 is provided with a notch 203, and the second protrusion 121 extends into the inside of the notch 203, and a limiting hole 122 is provided on the second protrusion 121; a limiting portion 32 is provided on the lower cover 3; when the lower cover 3 is welded and fixed to the middle cover 2, the limiting portion 32 is inserted into the inside of the limiting hole 122 to realize the transverse assembly and fixation of the assembly body 1; the setting of the notch 203 further reduces the thickness of the product after assembly.

[0065] refer to Figure 8 As shown, a limiting flange 123 is formed on the second side wall 12. After the middle cover 2 is installed into the accommodating cavity 10, the limiting flange 123 contacts the edge of the outer wall of the middle cover 2 to limit and fix the middle cover 2, which facilitates the subsequent welding of the middle cover 2 and the lower cover 3.

[0066] On the second side wall 12 , along the longitudinal direction of the assembly body 1 , a limiting flange 123 , a second protrusion 121 and a limiting flange 123 are sequentially arranged; and the bottom surface of the limiting flange 123 is substantially flush with the top surface of the second protrusion 121 .

[0067] The middle cover 2 is divided into two parts, including a first sub-middle cover 21 and a second sub-middle cover 22. The first sub-middle cover 21 and the second sub-middle cover 22 are connected by a matching structure at a position between the two second protrusions 121. The middle cover 2 is divided into two parts, which can facilitate the installation of the middle cover 2 under the limiting flange 123.

[0068] refer to Figure 4As shown, the matching structure includes a first lug 211 and a first recessed groove 212 arranged on the first sub-middle cover 21, and a second recessed groove 222 and a second lug 221 on the second sub-middle cover 22; the first lug 211 is provided with a first matching hole 213, and the first recessed groove 212 is provided with a first matching column 214; the second lug 221 is provided with a second matching hole 223, and the second recessed groove 222 is provided with a second matching column 224; when the first sub-middle cover 21 and the second sub-middle cover 22 are matched and connected, the first lug 211 on the first sub-middle cover 21 is sleeved on the second matching column 224 of the second recessed groove 222 of the second sub-middle cover 22 through the first matching hole 213; the second lug 221 on the second sub-middle cover 22 is sleeved on the first matching column 214 of the first recessed groove 212 of the first sub-middle cover 21 through the second matching hole 223.

[0069] The middle cover 2 is provided with two positioning holes 23, which are opposite to the two positioning posts 33 on the lower cover 3; when the lower cover 3 is covered on the middle cover 2, the positioning posts 33 are inserted into the positioning holes 23 to achieve precise positioning.

[0070] A connecting groove 24 is provided on the outer wall of the middle cover 2 , and a connecting ridge 34 is provided on the inner wall of the lower cover 3 . The connecting ridge 34 is inserted into the connecting groove 24 and fixed by welding.

[0071] In this embodiment, the middle cover 2 and the lower cover 3 are welded by ultrasonic welding.

[0072] Example 2

[0073] This embodiment provides a wristband wearable device, such as Figure 1-8 As shown, it includes a wristband and a permanent magnet, wherein the wristband serves as an assembly body 1 and the permanent magnet serves as the part to be fixed 4, which are assembled through the wristband assembly structure described in Example 1.

[0074] The wristband wearable device of this embodiment has all the advantages brought by adopting the above-mentioned wristband assembly structure because it adopts the above-mentioned wristband assembly structure.

[0075] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A wristband assembly structure, characterized in that: include: An assembly body (1) having a receiving cavity (10); A middle cover (2) capable of being installed into the interior of the accommodating cavity (10), wherein an installation space (5) suitable for placing a component to be fixed (4) is formed between the middle cover (2) and the bottom of the accommodating cavity (10); The lower cover (3) covers the outer wall of the middle cover (2) and is fixed to the middle cover (2) by welding; at least two opposite side walls of the accommodating cavity (10) are provided with protruding structures, and the protruding structures extend between the middle cover (2) and the lower cover (3) and are fixed.

2. The wristband assembly structure according to claim 1, characterized in that: Along the longitudinal direction of the assembly body (1), the accommodating cavity (10) has two opposite first side walls (11), and the first side walls (11) are provided with first protrusions (111), and the first protrusions (111) extend between the middle cover (2) and the lower cover (3) and are fixed.

3. The wristband assembly structure according to claim 2, characterized in that: At least one fixing through hole (112) is formed on the first protrusion (111), and a portion of the middle cover (2) and / or the lower cover (3) is welded and connected in or through the fixing through hole (112).

4. The wristband assembly structure according to claim 3, characterized in that: Three fixing through holes (112) are formed on the first protrusion (111); One end of the middle cover (2) opposite to the first protruding portion (111) is provided with two bent portions (201) and a straight portion (202), and the straight portion (202) is located between the two bent portions (201); After the middle cover (2) is installed into the accommodating cavity (10), the two bent portions (201) extend into the fixing through hole (112), and one straight portion (202) extends into the lower portion of the fixing through hole (112); The lower cover (3) is provided with three insertion portions (31), which are respectively inserted into the three fixing through holes (112) and are contacted and welded to the ends of the two bent portions (201) and one straight portion (202).

5. The wristband assembly structure according to claim 4, characterized in that: The top surface of the first protrusion (111) is substantially flush with the top surface of the middle cover (2); The two bent portions (201) and the one straight portion (202) bend downward from one end of the middle cover (2) into the interior of the installation space (5), and then extend below the fixing through hole (112) or further extend into the interior.

6. The wristband assembly structure according to claim 1, characterized in that: Along the transverse direction of the assembly body (1), the accommodating cavity (10) has two opposite second side walls (12), and the second side walls (12) are provided with second protrusions (121); a portion of the middle cover (2) opposite to the second protrusions (121) is provided with a notch (203), the second protrusions (121) extend into the inside of the notch (203), and a limiting hole (122) is provided on the second protrusions (121); The lower cover (3) is provided with a limiting portion (32); When the lower cover (3) and the middle cover (2) are welded and fixed, the limiting portion (32) is inserted into the limiting hole (122).

7. The wristband assembly structure according to claim 6, characterized in that: A limiting flange (123) is formed on the second side wall (12); after the middle cover (2) is installed into the accommodating cavity (10), the limiting flange (123) contacts the edge of the outer wall of the middle cover (2) to limit and fix the middle cover (2).

8. The wristband assembly structure according to claim 7, characterized in that: A limiting flange (123), a second protrusion (121) and a limiting flange (123) are sequentially arranged on the second side wall (12) along the longitudinal direction of the assembly body (1); and the bottom surface of the limiting flange (123) is substantially flush with the top surface of the second protrusion (121).

9. The wristband assembly structure according to claim 8, characterized in that: The middle cover (2) is arranged in a split body, comprising a first sub-middle cover (21) and a second sub-middle cover (22); the first sub-middle cover (21) and the second sub-middle cover (22) are connected by a matching structure at a position between the two second protrusions (121).

10. A wristband wearable device, characterized in that: It comprises a wristband and a permanent magnet, wherein the wristband serves as an assembly body (1), and the permanent magnet serves as the part to be fixed (4), and is assembled by the wristband assembly structure according to any one of claims 1 to 9.

Images