Chest expander with arm protection function

By incorporating an arm guard component into the resistance band, the problem of the elastic rope connector causing discomfort or injury to the arm is solved, thus improving the user experience.

CN224252011UActive Publication Date: 2026-05-19HAIYANG LIBENLI BODY BUIDING APP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HAIYANG LIBENLI BODY BUIDING APP CO LTD
Filing Date
2025-05-21
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

The elastic cord connector of existing resistance bands is prone to causing pain or injury to the skin on the outside of the user's arm, resulting in a poor user experience.

Method used

An arm guard assembly is connected between the handle assembly and the elastic cord of the resistance band. The arm guard assembly includes a soft arm guard body and a connecting part, and is detachably connected to the joint assembly of the handle assembly and the elastic cord. The arm guard body is composed of multiple thermoplastic elastomer sheets and webbing to enhance structural strength and fit.

Benefits of technology

It effectively prevents the elastic cord connector from rubbing against or injuring the user's outer arm skin, thus improving the user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a chest expander with an arm protection function, which comprises a handle component, an elastic rope, an arm protection component and a door clamp component, the door clamp component is sleeved on the elastic rope, and the arm protection component is connected between the handle component and the elastic rope; the arm guard assembly comprises a soft arm guard body and two opposite connecting parts arranged on the arm guard body, and the two connecting parts are connected with the handle assembly and the connector assembly of the elastic rope respectively. According to the chest expander with the arm protection function, the arm protection assembly is connected between the handle assembly and the elastic rope, the arm protection assembly comprises a soft arm protection body and two connecting parts, and the two connecting parts are connected with the handle assembly and a connector assembly of the elastic rope respectively; when a user pulls the chest expander forwards back to the fixed anchor point of the chest expander to carry out fitness training, the arm protection main body of the chest expander is in fit contact with the skin on the outer side of the arm, so that the joint assembly of the elastic rope of the chest expander is prevented from hurting or hurting the skin on the outer side of the arm of the user, and the user experience is improved.
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Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically a resistance band with arm guard function. Background Technology

[0002] As life pressures increase, people are paying more and more attention to their health. Fitness is an important guarantee for improving health and has gradually become an important part of people's lives. Although there are many fitness equipment, resistance bands are loved by many fitness enthusiasts as a simple and practical piece of equipment.

[0003] When using a resistance band, some exercises require the use of the band's door clamp (also called a door latch), with the door serving as the band's anchor point. When the exercise requires the user to pull the resistance band forward while facing away from the anchor point (such as a door), taking an example with handles at both ends, the user is positioned between the two handles, gripping each handle tightly, and pulling the band forward while facing away from the anchor point. At this time, the front part of the band will come into contact with the user's outer arm skin. This part of the band is usually the connection point between the handles and the elastic cord connector. The elastic cord connector is small, rigid, and blocky, including not only plastic parts but also metal parts such as eyelets. Although it is wrapped with webbing, prolonged use can still cause pain or injury to the user's outer arm skin, resulting in a poor experience. Summary of the Invention

[0004] This invention provides a resistance band with an arm protector function, which can solve the problem in the prior art where the joint component of the elastic rope of the resistance band is prone to causing pain or injury to the skin on the outside of the user's arm, resulting in a poor user experience.

[0005] To achieve the above-mentioned technical problems, this utility model adopts the following technical solution: a tensioner with a protective arm function, comprising:

[0006] The package includes a handle assembly, an elastic cord, a guard arm assembly, and a door clamp assembly. The door clamp assembly is sleeved on the elastic cord, and the guard arm assembly is connected between the handle assembly and the elastic cord. The guard arm assembly includes a soft guard arm body and two opposing connecting parts disposed on the guard arm body. The two connecting parts are respectively connected to the handle assembly and the joint assembly of the elastic cord.

[0007] The technical solution of this utility model also includes the following additional technical features:

[0008] The main body of the arm guard is in the shape of a long strip, and the two connecting parts are located at both ends of the length direction of the main body of the arm guard, and are detachably connected to the handle assembly and the joint assembly of the elastic rope, respectively.

[0009] The arm guard body includes multiple thermoplastic elastomer sheets stacked on top of each other, with an intermediate webbing sandwiched between adjacent thermoplastic elastomer sheets. The two ends of the intermediate webbing extend to the two ends of the thermoplastic elastomer sheets, and the intermediate webbing is sewn together with the thermoplastic elastomer sheets.

[0010] The upper surface of the topmost thermoplastic elastomer sheet and the lower surface of the bottommost thermoplastic elastomer sheet are respectively provided with surface webbing. The two ends of the surface webbing extend to the two ends of the thermoplastic elastomer sheet, and the surface webbing, the middle webbing and the thermoplastic elastomer sheet are sewn together.

[0011] The center lines of the widths of the surface webbing, the middle webbing, and the thermoplastic elastomer sheet are aligned vertically.

[0012] One of the two connecting parts is a stainless steel D-ring, which is detachably connected to the joint assembly of the elastic rope, and the other is a stainless steel spring buckle, which is detachably connected to the handle assembly; the stainless steel D-ring and the stainless steel spring buckle are respectively sewn to the arm guard body through webbing connecting rings.

[0013] The periphery of the thermoplastic elastomer sheet is covered with an edge webbing, which is sewn onto the periphery of the thermoplastic elastomer sheet.

[0014] The length of the main body of the arm guard ranges from 20-30mm, and the width ranges from 10-15mm.

[0015] The door clamp assembly includes a cylindrical door clamp roller and a door clamp webbing. The door clamp webbing includes a first annular webbing and a second annular webbing. The first annular webbing and the second annular webbing are connected in a figure-eight shape. The first annular webbing passes through the door clamp roller, and the second annular webbing is sleeved on the elastic rope.

[0016] The door clamp assembly includes a third annular webbing and a tensioner fixing assembly disposed on the third annular webbing. The tensioner fixing assembly includes an adjusting buckle, a hook connected to the adjusting buckle, and a threading ring. The hook and the threading ring are located radially outside the third annular webbing. The adjusting buckle is disposed on the third annular webbing and configured to be movable and locked along the circumference of the third annular webbing.

[0017] Compared with the prior art, the puller with arm protection function of this utility model has an arm protection assembly connected between the handle assembly and the elastic rope. The arm protection assembly includes a soft arm protection body and two opposite connecting parts on the arm protection body. The two connecting parts are respectively connected to the handle assembly and the joint assembly of the elastic rope. When the user pulls the puller forward with his back to the fixed anchor point of the puller for fitness training, the arm protection body of the puller is in close contact with the skin on the outside of the arm, avoiding the joint assembly of the elastic rope of the puller from hurting or injuring the skin on the outside of the user's arm, thus improving the user experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the assembly structure of the tensioner with arm guard function in the embodiment of this utility model;

[0020] Figure 2 This is a perspective view of the arm guard assembly of the tensioner with arm guard function in an embodiment of this utility model;

[0021] Figure 3 This is a front view of the arm guard assembly of the tensioner with arm guard function in an embodiment of this utility model;

[0022] Figure 4 for Figure 3 Enlarged cross-sectional view of the AA structure;

[0023] Figure 5 This is a perspective view of another embodiment of the door clamp assembly of the arm guard function puller in this utility model;

[0024] Figure 6 for Figure 5 Enlarged view of part B;

[0025] Figure 7 for Figure 6 Enlarged view of part C;

[0026] Figure 8 for Figure 5 A perspective view of the door clamp assembly shown from another angle;

[0027] Figure 9 for Figure 8 Enlarged view of part D;

[0028] Figure 10 for Figure 5The diagram shows the fixed state of the door clamp assembly on the door.

[0029] Figure label:

[0030] 100. Handle assembly;

[0031] 200. Elastic rope; 210. Joint assembly;

[0032] 300. Arm protector assembly; 310. Arm protector body; 311. Thermoplastic elastomer sheet; 312. Middle webbing; 313. Surface webbing; 314. Edge webbing; 320. Stainless steel D-ring; 330. Stainless steel spring buckle; 340. Webbing connecting ring;

[0033] 400. Door clamp assembly; 410. Door clamp roller; 420. Door clamp webbing; 421. First circular webbing; 422. Second circular webbing; 430. Third circular webbing; 440. Tensioner fixing assembly; 441. Adjusting buckle; 442. Hook; 443. Insertion ring; 444. Connecting shaft; 445. Fourth circular webbing; 446. First stitch; 447. Second stitch; 448. Adjusting buckle connecting ring; 449. Hook connecting ring; 450. Elastic protective layer; 460. Elastic protective cylinder; 461. Through part; 470. Press buckle;

[0034] a. Door body. Detailed Implementation

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Reference Figures 1 to 4 In some embodiments of this application, a puller with a guard arm function is proposed, including a handle assembly 100, an elastic rope 200, a guard arm assembly 300, and a door clamp assembly 400. The door clamp assembly 400 is sleeved on the elastic rope 200, and the guard arm assembly 300 is connected between the handle assembly 100 and the elastic rope 200. The guard arm assembly 300 includes a soft guard arm body 310 and two connecting parts disposed on the guard arm body 310 and disposed opposite to each other. The two connecting parts are respectively connected to the handle assembly 100 and the connector assembly 210 of the elastic rope 200.

[0038] In some embodiments of this application, the puller is provided with the aforementioned handle assembly 100 at both ends, that is, the puller is a puller with handle assemblies 100 at both ends; correspondingly, the arm guard assembly 300 is provided in two places, and the elastic rope 200 is provided with connector assemblies 210 at both ends. One arm guard assembly 300 connects one handle assembly 100 and one connector assembly 210 of the elastic rope 200, and the other arm guard assembly 300 connects the other handle assembly 100 and the other connector assembly 210 of the elastic rope 200.

[0039] In some embodiments of this application, the resistance band with arm guard function does not directly connect the handle assembly 100 and the connector assembly 210 of the elastic rope 200. Instead, an arm guard assembly 300 is provided between them for connection. When the user pulls the resistance band forward for fitness training with their back to the fixed anchor point (such as a door), the part that comes into contact with the skin on the outside of the user's arm is mainly the arm guard body 310 of the arm guard assembly 300, rather than the connector assembly 210 of the elastic rope 200. This can effectively prevent the connector assembly 210 of the elastic rope 200 from hurting or injuring the skin on the outside of the user's arm, thus improving the user experience.

[0040] In some embodiments of this application, the tensioner is a hose tensioner, that is, the elastic rope 200 is an elastic hose, and its connector assembly 210 is a connecting buckle or connecting ring of an existing hose tensioner, which will not be described in detail here. Figure 1 As shown.

[0041] In some embodiments of this application, such as Figures 1 to 3 As shown, the arm protector body 310 is a long strip, with two connecting parts located at both ends of the arm protector body 310 along its length. This allows the arm protector body 310 to be positioned as close as possible to the length of the user's arm during use, so as to make the largest possible contact area with the user's outer skin and improve the protection effect on the arm. The two ends of the arm protector body 310 are detachably connected to the handle assembly 100 and the connector assembly 210 of the elastic rope 200, respectively, so that the arm protector assembly 300 can be selected for use according to the specific fitness movement.

[0042] In some embodiments of this application, the length L of the arm guard body 310 ranges from 20 to 30 mm, and the width W ranges from 10 to 15 mm, so as to fully protect the arm.

[0043] In some embodiments of this application, such as Figures 2 to 4As shown, the arm support body 310 includes multiple thermoplastic elastomer sheets 311 stacked vertically. An intermediate webbing 312 is sandwiched between adjacent thermoplastic elastomer sheets 311, with both ends of the intermediate webbing 312 extending to the ends of the thermoplastic elastomer sheets 311. The intermediate webbing 312 is sewn or bonded to the thermoplastic elastomer sheets 311 as a single unit. The intermediate webbing 312 forms the skeleton of the arm support assembly 300, ensuring the structural strength of the entire arm support assembly 300, thus enabling it to withstand the tension during training. The thermoplastic elastomer sheets 311, made of thermoplastic elastomer material, also possess a certain strength and good elasticity, allowing them to conform well to the user's outer arm skin, increasing the contact area and reducing contact pressure on the user's skin.

[0044] Figures 2 to 4 The illustration is based on the example of setting two thermoplastic elastomer sheets 311, but the number of sheets is not limited to two.

[0045] Furthermore, a surface webbing 313 is provided on the upper surface of the uppermost thermoplastic elastomer sheet 311 and the lower surface of the lowermost thermoplastic elastomer sheet 311, respectively. The two ends of the surface webbing 313 also extend to the two ends of the thermoplastic elastomer sheet 311. The surface webbing 313, the middle webbing 312 and the thermoplastic elastomer sheet 311 are sewn or bonded together to further enhance the structural strength of the arm guard assembly 300.

[0046] The center lines of the width of the surface webbing 313, the middle webbing 312, and the thermoplastic elastomer sheet 311 are aligned vertically. For example, the surface webbing 313, the middle webbing 312, and the thermoplastic elastomer sheet 311 are all rectangular, elliptical, or other axially symmetrical strip shapes. The surface webbing 313 and the middle webbing 312 are located in the middle of the width direction of the arm guard assembly 300, which helps to ensure that the entire arm guard assembly 300 is subjected to force evenly and improves its service life.

[0047] In some embodiments of this application, one of the two connecting parts on the arm guard body 310 is a stainless steel D-ring 320, which is detachably connected to the connector assembly 210 of the elastic rope 200, and the other is a stainless steel spring buckle 330, which is detachably connected to the handle assembly 100; the stainless steel D-ring 320 and the stainless steel spring buckle 330 are respectively sewn to the arm guard body 310 through a webbing connecting ring 340.

[0048] Specifically, webbing connecting rings 340 are sewn at both ends of the arm guard body 310, and stainless steel D-rings 320 and stainless steel spring buckles 330 are respectively threaded onto the corresponding webbing connecting rings 340.

[0049] In some embodiments of this application, such as Figures 2 to 4As shown, the periphery of the thermoplastic elastomer sheet 311 is covered with an edge webbing 314. The edge webbing 314 is sewn onto the periphery of the thermoplastic elastomer sheet 311 or is fixedly wrapped around the periphery of the thermoplastic elastomer sheet 311 by adhesive bonding, so as to improve the wear resistance of the thermoplastic elastomer sheet 311 and increase its service life.

[0050] In some embodiments of this application, the middle webbing 312, the surface webbing 313, the webbing connecting ring 340, and the edge webbing 314 may specifically be woven tape or canvas tape, etc.

[0051] For the door clamp assembly 400, an existing figure-eight shaped tensioner door clamp can be used, such as... Figure 1 As shown, the device includes a cylindrical door clamp roller 410 and a door clamp webbing 420. The door clamp webbing 420 includes a first annular webbing 421 and a second annular webbing 422, which are connected to form a figure-eight shape. The first annular webbing 421 passes through the door clamp roller 410, and the second annular webbing 422 is fitted onto the elastic rope 200. In this case, the overall use of the resistance band is the same as in existing technologies, such as keeping the door of a house in a securely closed (lockable) position. The door clamp assembly 400 is clamped by the side door seam as a fixed anchor point. The door clamp roller 410 is located on one side of the door, and the other parts of the resistance band are located on the other side. The user performs fitness exercises by pulling the resistance band forward while facing away from the door.

[0052] In other embodiments of this application, reference is made to Figures 5 to 10 The door clamp assembly 400 includes a third annular webbing 430 and a tensioner fixing assembly 440 disposed on the third annular webbing 430. The tensioner fixing assembly 440 includes an adjusting buckle 441, a hook 442 connected to the adjusting buckle 441, and a through-ring 443. The hook 442 and the through-ring 443 are located radially outside the third annular webbing 430. The adjusting buckle 441 is disposed on the third annular webbing 430 and configured to be movable circumferentially along the third annular webbing 430 and to be locked after being moved into position, i.e., positioned in the position after being moved into position.

[0053] Using the door clamp assembly 400 in these embodiments, when the puller is in use, the entire door clamp assembly 400 is fitted onto the door body a of the house via the third annular webbing 430, approximately at the center of the width direction of the door body a, and the third annular webbing 430 is kept at a certain tension; then the door is closed (can be locked), the top and bottom of the third annular webbing 430 are clamped in the upper and lower door seams, the door clamp assembly 400 is securely fitted onto the door body a, and the puller fixing assembly 440 is located on the side of the door body a in the closing direction ( Figure 10(As shown in the diagram, arrow I indicates the closing direction, and arrow II indicates the opening direction.) For example, if turning inwards closes the door, the resistance band fixing component 440 is located inside the door body a; if turning outwards closes the door, the resistance band fixing component 440 is located outside the door body a. This allows the load-bearing wall where the door body a is located to act as a second resistance for the door clamp component 400, improving safety. Then, a resistance band with a hook at one end can be hooked onto the hook 442 of the resistance band fixing component 440 for related fitness exercises, or the elastic rope 200 of the resistance band with handle components 100 at both ends can be threaded onto the threading ring 443 for related fitness training. The location of the resistance band fixing component 440 is the resistance band fixing anchor point.

[0054] When it is necessary to adjust the position of the tensioner fixing anchor point, open the adjusting buckle 441, move the entire tensioner fixing assembly 440 around the circumference of the third ring webbing 430, and lock the adjusting buckle 441 after adjusting it into place. The adjustment is convenient.

[0055] Specifically, the third circular webbing 430 is formed by connecting the two ends of a long strip of webbing through snap fasteners 470, such as... Figure 7 , Figure 9 As shown. The third annular webbing 430 can be made of woven tape or canvas tape, etc. The snap fastener 470 is a common type of buckle used in belts, bag straps, etc., with two states: unlocked and locked. It is locked by pressing the latch and unlocked by prying the latch outward. By operating the snap fastener 470, the annular circumference of the third annular webbing 430 can be easily adjusted, thereby adjusting its tightness on the door a.

[0056] Furthermore, such as Figure 6 As shown, the adjusting buckle 441 is provided with a connecting shaft 444 parallel to the width direction of the third annular webbing 430. Both ends of the connecting shaft 444 are connected to the housing of the adjusting buckle 441. A fourth annular webbing 445 is sleeved on the connecting shaft 444, that is, the connecting shaft 444 is located in the annular space of the fourth annular webbing 445. The fourth annular webbing 445 is sewn with a first seam 446 and a second seam 447. The first seam 446 and the second seam 447 divide the fourth annular webbing 445 into an adjusting buckle connecting ring 448, a hook connecting ring 449 and the aforementioned through ring 443. The hook connecting ring 449 and the through ring 443 are located outside the adjusting buckle connecting ring 448. The hook 442 is through the hook connecting ring 449.

[0057] Specifically, the fourth circular webbing 445 is formed by connecting the ends of a long strip of webbing. Its first end is wrapped around the connecting shaft 444 and then sewn together with the second end. For example, it can be sewn at the position corresponding to the first seam 446, forming the first seam 446. The fourth circular webbing 445 can be made of woven tape or canvas tape, etc. The hook 442 can be a metal D-ring, triangular ring, O-ring, etc.

[0058] Since the threading ring 443 needs to pass through the tensioner with handle assemblies 100 at both ends, its inner diameter is larger than that of the adjusting buckle connecting ring 448 and the hook connecting ring 449. In addition, its contact area with the elastic rope 200 of the tensioner is larger. In order to reduce friction damage between them, especially when the elastic rope 200 is a rubber tube, and to reduce friction on the rubber tube and improve the service life of the tensioner, an elastic protective layer 450, such as a rubber layer or a foam layer, can be fixed on the inner wall of the threading ring 443. There are no specific restrictions here. Specifically, the elastic protective layer can be fixed by bonding or sewing.

[0059] In some embodiments of this utility model, such as Figure 6 and Figure 9 As shown, the tensioner fixing assembly 440 also includes an elastic protective sleeve 460, which is sleeved on the third annular webbing 430 at the location of the adjusting buckle 441. The elastic protective sleeve 460 is not a complete cylindrical structure; its circumferential sidewall has a through portion 461 that avoids the adjusting buckle 441, hook 442, and through ring 443. When the adjusting buckle 441 moves circumferentially along the third annular webbing 430, the adjusting buckle 441 can push the elastic protective sleeve 460 to move synchronously.

[0060] Specifically, the elastic protective sleeve 460 can be made of elastic rubber or sponge. Since the adjusting buckle 441 generally needs to have a certain structural strength and hardness, existing metal buckles 470 or plastic buckles 470 can be selected. In this embodiment, after the door clamp assembly 400 is installed on the door body a, it contacts the door body a through the elastic protective sleeve 460, which can prevent the adjusting buckle 441 from directly contacting the door body a and causing the door body a to be scratched or damaged.

[0061] To facilitate processing and assembly / disassembly on the third annular webbing 430, the original shape of the elastic protective tube 460 can be a sheet structure. A portion of the material can be cut off from the part corresponding to the through portion 461. The sheet webbing is then wrapped around the third annular webbing 430, and hook and loop fasteners can be used to connect the ends to form a cylindrical elastic protective tube 460.

[0062] In some embodiments of this utility model, there are multiple tensioner fixing components 440, which are arranged at intervals along the circumference of the third annular webbing 430 on the same half of the third annular webbing 430. Specifically, based on the state of installation on the door body a, all tensioner fixing components 440 are located on the same side of the door body a, that is, the side where the door body a is closed, and all face the user.

[0063] Figure 5 , Figure 8 and Figure 10The illustration is based on the example of setting two tensioner fixing components 440, but the number of them is not limited to two.

[0064] By setting multiple tensioner fixing components 440, the elastic rope 200 of the tensioner can be used in conjunction with tensioner fixing components 440 of different heights to provide users with a variety of fitness exercises, improve the flexibility and convenience of using the door clamp component 400, and also adapt to users of different heights.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chest expander with arm guards, characterized in that, include: The package includes a handle assembly, an elastic cord, a guard arm assembly, and a door clamp assembly. The door clamp assembly is sleeved on the elastic cord, and the guard arm assembly is connected between the handle assembly and the elastic cord. The guard arm assembly includes a soft guard arm body and two opposing connecting parts disposed on the guard arm body. The two connecting parts are respectively connected to the handle assembly and the joint assembly of the elastic cord.

2. The tensioner with arm guard function according to claim 1, characterized in that, The main body of the arm guard is in the shape of a long strip, and the two connecting parts are located at both ends of the length direction of the main body of the arm guard, and are detachably connected to the handle assembly and the joint assembly of the elastic rope, respectively.

3. The tensioner with arm guard function according to claim 2, characterized in that, The arm guard body includes multiple thermoplastic elastomer sheets stacked on top of each other, with an intermediate webbing sandwiched between adjacent thermoplastic elastomer sheets. The two ends of the intermediate webbing extend to the two ends of the thermoplastic elastomer sheets, and the intermediate webbing is sewn together with the thermoplastic elastomer sheets.

4. The tensioner with arm guard function according to claim 3, characterized in that, The upper surface of the topmost thermoplastic elastomer sheet and the lower surface of the bottommost thermoplastic elastomer sheet are respectively provided with surface webbing. The two ends of the surface webbing extend to the two ends of the thermoplastic elastomer sheet, and the surface webbing, the middle webbing and the thermoplastic elastomer sheet are sewn together.

5. The tensioner with arm guard function according to claim 4, characterized in that, The center lines of the widths of the surface webbing, the middle webbing, and the thermoplastic elastomer sheet are aligned vertically.

6. The tensioner with arm guard function according to claim 4, characterized in that, One of the two connecting parts is a stainless steel D-ring, which is detachably connected to the joint assembly of the elastic rope, and the other is a stainless steel spring buckle, which is detachably connected to the handle assembly; the stainless steel D-ring and the stainless steel spring buckle are respectively sewn to the arm guard body through webbing connecting rings.

7. The tensioner with arm guard function according to claim 3, characterized in that, The periphery of the thermoplastic elastomer sheet is covered with an edge webbing, which is sewn onto the periphery of the thermoplastic elastomer sheet.

8. The tensioner with arm guard function according to claim 2, characterized in that, The length of the main body of the arm guard ranges from 20-30mm, and the width ranges from 10-15mm.

9. The tensioner with arm guard function according to claim 1, characterized in that, The door clamp assembly includes a cylindrical door clamp roller and a door clamp webbing. The door clamp webbing includes a first annular webbing and a second annular webbing. The first annular webbing and the second annular webbing are connected in a figure-eight shape. The first annular webbing passes through the door clamp roller, and the second annular webbing is sleeved on the elastic rope.

10. The tensioner with arm guard function according to claim 1, characterized in that, The door clamp assembly includes a third annular webbing and a tensioner fixing assembly disposed on the third annular webbing. The tensioner fixing assembly includes an adjusting buckle, a hook connected to the adjusting buckle, and a threading ring. The hook and the threading ring are located radially outside the third annular webbing. The adjusting buckle is disposed on the third annular webbing and configured to be movable and locked along the circumference of the third annular webbing.