Passive power-assisting arm and wearable device

Abstract

The present application relates to the field of exoskeletons, and specifically discloses a passive power-assisting arm and wearable device, which includes a main support part, a rotating swing arm and an elastic member. The main support part is used as the main structure, and is respectively connected to the waist and shoulder of the human body to support the overall structure of the assistant arm. The rotating swing arm is movably connected to the main support part and swings synchronously with the wearer's arm. The elastic member is arranged in the main support part and is connected to the rotating swing arm. The elastic member contracts and pulls the rotating swing arm to rotate away from the human waist to provide power assistance. At the same time, the elastic member is connected to a tensioning member, and the main support part is provided with a locking seat for locking the tensioning member. By pulling the tensioning member and locking it, the elastic force of the elastic member can be adjusted and maintained to achieve the adjustment of the power assistance. The present application has the advantages of adjustable power assistance, simple and stable structure, and low implementation cost.

Description

Technical Field

[0001] The present application relates to the field of exoskeletons, and more particularly to a passive power-assisted arm and wearable device. Background Art

[0002] At present, active power assistance devices have gradually begun to be used in some work scenarios in the fields of logistics warehousing, industrial manufacturing, military industry, etc., in order to reduce the labor burden of workers, relieve their muscle fatigue and injuries, improve work efficiency, and reduce the occurrence of safety accidents.

[0003] However, the currently commonly used active power-assisting devices cannot provide power assistance corresponding to the force value according to the work content. If the force value provided is too small, it cannot meet the power assistance needs in actual work, while if the force value provided is too large, some destructive accidents are likely to occur, resulting in damage to certain workpieces, products and other components. Summary of the invention

[0004] In order to facilitate the adjustment of the power assisting size of the active power assisting device, the present application provides a passive power assisting arm and wearable device, which can adjust the power assisting size as needed to adapt to different working conditions, and has a simple and stable structure and low implementation cost.

[0005] In the first aspect, the passive power-assist arm provided in the present application adopts the following technical solution:

[0006] A passive power-assisting arm, comprising:

[0007] A main body support portion;

[0008] A connecting member is rotatably mounted on the main body support portion and has at least one fixed end and one elastic force acting end;

[0009] A rotating swing arm is fixed to the fixed end;

[0010] An elastic member, wherein the movable end of the elastic member is connected to the elastic force acting end and is used to pull the rotating swing arm to rotate, and the adjusting end of the elastic member is movably arranged on the main body supporting part;

[0011] The adjustment and locking mechanism is arranged on the main body support part and is used for adjusting and locking the position of the adjustment end of the elastic member on the main body support part so as to adjust the magnitude of the assisting force.

[0012] By adopting the above technical solution, the elastic member pulls the connecting member to drive the rotating swing arm to rotate, thereby providing assistance when the human arm lifts heavy objects, reducing the labor burden; the adjustment locking mechanism is used to adjust the position of the adjustment end of the elastic member on the main support part, thereby changing the stretching degree of the elastic member, adjusting the elastic force, and then adjusting the assistance of the power-assisting arm, so that the user can flexibly adjust the corresponding assistance according to different working conditions and scenes, thereby improving the applicability of the power-assisting device, meeting the assistance needs, and avoiding component damage.

[0013] Optionally, the adjustment locking mechanism includes a tensioning member and a locking seat, the tensioning member is connected to the adjustment end of the elastic member, the tensioning member has an active amount for pulling the adjustment end of the elastic member to move so that the adjustment end of the elastic member is away from the movable end of the elastic member, and the locking seat is used to lock the position of the tensioning member.

[0014] By adopting the above technical scheme, the elastic member can be stretched by pulling the adjustment end of the elastic member with the tensioning member to increase the elastic force of the elastic member and thus increase the assisting force. At the same time, the tensioning member can be locked by cooperating with the locking seat to keep the elastic force of the elastic member at the adjusted level to meet the assisting force requirement. When the assisting force needs to be reduced, the tensioning member can be loosened by the locking seat to automatically reset the elastic member. After adjusting to the required size, the tensioning member can be locked again. The adjusting structure is simple, stable and easy to operate. Moreover, the wearer can keep the assisting arm in the wearing state and directly use the tensioning member to adjust the assisting size of the assisting arm without taking off the assisting arm, which greatly improves the convenience and efficiency of the assisting force adjustment.

[0015] Optionally, the tensioning member is a flexible pull rope.

[0016] By adopting the above technical solution, the setting difficulty of the tensioning member of the flexible structure is lowered, and the adaptability is improved while reducing the difficulty of assembly.

[0017] Optionally, the locking seat includes a seat body and at least one movable part, the seat body is mounted on the main body support part, the movable part is movably arranged on the seat body, and the movable part has at least one end surface that cooperates with the seat body to clamp the tensioning member.

[0018] By adopting the above technical solution, the tensioning member is locked by clamping cooperation between the movable part and the seat body, and the switching between the unlocking and locking states is very convenient and easy to operate, and the structure is simple and durable.

[0019] Optionally, the end surface is formed with a plurality of protrusions.

[0020] By adopting the above technical solution, the protrusion can increase the friction between the end face and the tensioning member, thereby improving the locking effect.

[0021] Optionally, the main support portion forms a first sliding cavity, the adjustment end of the elastic member is arranged in the first sliding cavity, and an opening is formed at one end of the main support portion close to the connecting member, the opening is connected to the first sliding cavity, and the movable end of the elastic member extends from the opening to connect to the elastic force application end.

[0022] By adopting the above technical solution, the main body support part can form an isolation and protection effect on the internal elastic parts to prevent the elastic parts from being worn, and the external structure is neat and beautiful; at the same time, the main body support part restricts the telescopic path of the elastic parts to prevent the elastic parts from being entangled, etc., thereby improving the stability of the elastic parts during telescopic expansion and contraction.

[0023] Optionally, the main body support portion forms a first sliding cavity, the adjusting end of the elastic member is arranged in the first sliding cavity, the main body support portion has an opening formed at one end close to the connecting member, the opening is communicated with the first sliding cavity, the movable end of the elastic member extends from the opening to connect to the elastic force application end, and the main body support portion forms a penetration opening, the penetration opening is communicated with the first sliding cavity, so that the tensioning member can extend from the first sliding cavity.

[0024] By adopting the above technical solution, the tensioning piece is extended from the insertion opening for human hand to grab, and the position of the adjustment end of the elastic piece can be changed by pulling the tensioning piece to adjust the size of the assisting force, while keeping the elastic piece in the main support part without being disturbed by the outside world, thereby further improving the protection effect of the elastic piece and thus improving the durability of the device; at the same time, the flexible rope body facilitates the tensioning piece to extend from the insertion opening, and the assembly difficulty is low.

[0025] Optionally, at least one limiting roller is rotatably provided at the opening of the main body support portion, and when the movable end of the elastic member deviates from the main body support portion, the elastic member abuts against the outer circumferential surface of the limiting roller.

[0026] By adopting the above technical solution, the limiting roller limits the extension and swing of the elastic member, thereby improving the stability of the elastic member and preventing the elastic member from contacting the hollow rod body and causing wear, thereby improving durability.

[0027] In the second aspect, the present application provides a wearable device that adopts the following technical solution:

[0028] A wearable device comprises a waist belt, a shoulder strap and the above-mentioned passive power-assisting arm, wherein the shoulder strap is connected to the waist belt, the shoulder strap is used to be worn on the shoulders of a human body, and the waist belt is used to be tied around the waist of a human body. It also comprises an extension rod and an adjustment seat, wherein the adjustment seat is fixed to a main body support portion, the extension rod is passed through the adjustment seat, one end of the extension rod is fixed to the waist belt, and the other end extends into the main body support portion, the adjustment seat is provided with a locking screw for locking the position of the extension rod, and the end of the main body support portion away from the extension rod is fixed to the shoulder strap.

[0029] By adopting the above technical solution, the distance between the rotating swing arm and the belt can be adjusted by adjusting the extended length of the extension rod to match wearers of different physiques and improve the adaptability of the wearable device.

[0030] Optionally, a locking block is provided at the end of the locking screw close to the extension rod, and the locking block is attached to the extension rod. The locking screw drives the locking block to move toward or away from the extension rod.

[0031] By adopting the above technical solution, the cooperation between the locking screw and the locking block can quickly realize the switching between the unlocking and locking states of the extension rod, which is convenient to use and effectively improves the efficiency of adjustment.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The elastic member pulls the connecting member to drive the rotating swing arm to rotate, thereby providing assistance when the human arm lifts heavy objects, reducing the labor burden; the adjustment locking mechanism is used to adjust the position of the adjustment end of the elastic member on the main support part, change the stretching degree of the elastic member, adjust the elastic force, and then adjust the assistance of the power-assisting arm, so that the user can flexibly adjust the appropriate assistance according to different working conditions and scenes, improve the applicability of the power-assisting device, meet the assistance needs, and avoid component damage;

[0034] 2. The elastic member can be stretched by pulling the adjustment end of the elastic member with the tension member to increase the elastic force of the elastic member, thereby increasing the power assistance. At the same time, the tension member can be locked with the locking seat to keep the elastic force of the elastic member at the adjusted level to meet the power assistance needs. When the power assistance needs to be reduced, the tension member can be loosened with the locking seat to automatically reset the elastic member. After adjusting to the required size, the tension member can be locked. The adjustment structure is simple, stable, and easy to operate.

[0035] 3. The main body support part is used to isolate and protect the internal elastic parts to prevent the elastic parts from being worn, and the external structure is neat and beautiful; at the same time, the main body support part limits the expansion and contraction path of the elastic parts to prevent the elastic parts from being entangled, etc., and improve the stability of the elastic parts during expansion and contraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the overall structure of a passive power-assisting arm shown in the embodiment of the present application;

[0037] Figure 2 yes Figure 1 A half-section view of

[0038] Figure 3 is a schematic diagram showing an opening according to an embodiment of the present application;

[0039] Figure 4 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0040] Figure 5 This is a schematic diagram showing an adjustment seat according to an embodiment of the present application.

[0041] Figure markings: 01, shoulder strap; 02, waist belt; 1, main support part; 11, hollow rod body; 111, first rod body; 112, second rod body; 12, extension plate; 13, first sliding cavity; 14, opening; 15, insertion opening; 16, limit block; 17, limit hole; 18, extension rod; 19, mounting plate; 2, rotating swing arm; 3, elastic member; 31, movable end; 32, adjustment end; 4, connecting member; 41, fixed end; 42, elastic force action end; 43, avoidance opening; 5, adjustment locking mechanism; 51, tensioning member; 52, locking seat; 521, seat body; 522, movable part; 523, end face; 6, mounting roller; 7, connecting block; 8, limit roller; 9, adjustment seat; 91, locking screw; 92, locking block. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-3 This application is described in further detail.

[0043] The present application embodiment discloses a passive power-assisting arm, referring to Figure 1 and Figure 2 , including a main body support part 1, a rotating swing arm 2, an elastic member 3 and a connecting member 4. The main body support part 1 serves as a main structure and can be connected to the waist and / or shoulder of the wearer to form a support for the overall structure of the power-assisting arm. At the same time, the main body support part 1 has at least one end or a protrusion located on the wearer's shoulder to serve as a hinge point for the connecting member 4 to be installed; the connecting member 4 can rotate around the hinge point relative to the main body support part 1, and the connecting member 4 is respectively connected to the rotating swing arm 2 and the elastic member 3, the rotating swing arm 2 is bound to the user's arm, and the elastic member 3 is arranged on the main body support part 1 and acts on the connecting member 4.

[0044] When the user wears the passive power-assist arm to pick up heavy objects, the user's arm swings downward to grab the heavy objects. During the swinging process, the rotating swing arm 2 follows the movement to pull the connecting member 4 to rotate around the hinge point. At this time, the elastic member 3 is stretched and extended; the user moves the heavy objects upward to lift the rotating swing arm 2 upward. At this time, the elastic member 3 begins to contract due to its own elasticity. The contraction force acts on the connecting member 4, so that the connecting member 4 has a rotational force, which can drive the rotating swing arm 2 to lift upward, so as to achieve the effect of assisting the user in picking up heavy objects.

[0045] Specifically, refer to Figure 1 and Figure 2The connecting member 4 has at least one fixed end 41 and one elastic end 42, and the fixed end 41 and the elastic end 42 are formed by the connecting member 4 body extending in two directions with the hinge point as the origin, and the angle between the extending directions of the fixed end 41 and the elastic end 42 is an obtuse angle. Among them, the fixed end 41 is fixed to the rotating swing arm 2, and the elastic end 42 is connected and matched with the elastic member 3. When in use, the contraction force of the elastic member 3 acts on the elastic end 42, pulling the connecting member 4 to rotate as a whole, providing torque to the fixed end 41, driving the rotating swing arm 2 to lift, so as to provide assistance to the wearer.

[0046] In this embodiment, the connecting member 4 is an integrally formed structure to enhance the overall structural strength, and a hollow structure is provided on the surface of the connecting member 4 to achieve the purpose of light weight and material saving.

[0047] Preferably, the connector 4 is provided with an inserting portion at the fixed end 41, and a corresponding inserting groove is provided at the end of the rotating swing arm 2, and the inserting portion is plugged into and matched with the inserting groove to assemble the connector 4 and the rotating swing arm 2, and the two are further fixed by bolts.

[0048] Further, refer to Figure 1 and Figure 2 The elastic member 3 has at least one movable end 31 connected to the elastic force acting end 42 of the connecting member 4, and an adjusting end 32 movably arranged on the main body support portion 1. At the same time, an adjusting locking mechanism 5 is arranged on the main body support portion 1, which is used to adjust and lock the position of the adjusting end 32 of the elastic member 3 on the main body support portion 1. By adjusting the locking mechanism 5 to make the adjusting end 32 of the elastic member 3 close to or away from the hinge point of the connecting member 4, the stretching degree of the elastic member 3 during the rotation of the connecting member 4 can be changed, thereby adjusting the elastic force of the elastic member 3 and changing the power assisting amount of the power assisting arm.

[0049] In this embodiment, the elastic member 3 is preferably an elastic band. The elastic band has the characteristics of being light and durable, and the elastic band does not generate noise and has low vibration during the expansion and contraction process. In addition, the elastic band has good flexibility, is easy to install, and can maintain elasticity even if a certain amount of bending occurs.

[0050] Reference Figure 2 and Figure 3 The main support portion 1 includes a hollow rod body 11 and two extension plates 12. One end of the hollow rod body 11 is located at the shoulder of the human body, and the other end is located at the waist of the human body. The end of the hollow rod body 11 located at the shoulder of the human body extends in a direction away from the other end to form four mounting plates 19. The four mounting plates 19 are opposite to each other in two pairs and are coplanar in two pairs. The two coplanar mounting plates 19 form a mounting surface for installing the extension plates 12. The two extension plates 12 are respectively installed on the two mounting surfaces.

[0051] At the same time, the two extension plates 12 extend in a direction close to the human shoulder joint, and the connector 4 is hinged between the ends of the two extension plates 12 away from the hollow rod body 11, so that the hinge point of the connector 4 is closer to the human shoulder joint, improving the adaptability of the rotating swing arm 2 when it rotates synchronously with the human arm. In addition, the elastic member 3 is arranged on the hollow rod body 11, and the extension plate 12 makes the hinge point of the connector 4 away from the elastic member 3, so as to increase the force torque of the elastic member 3 and improve the power-assisting effect.

[0052] Further, refer to Figure 2 and Figure 3 , a first sliding cavity 13 is provided in the hollow rod body 11, and an opening 14 is formed at the end of the hollow rod body 11 near the mounting plate 19, the opening 14 is communicated with the first sliding cavity 13, the adjustment end 32 of the elastic member 3 is slidably disposed in the first sliding cavity 13, and is connected to the adjustment locking mechanism 5, the movable end 31 of the elastic member 3 extends from the opening 14, and is connected to the elastic force application end 42 of the connecting member 4. The hollow rod body 11 can form an isolation and protection effect on the elastic member 3, preventing the elastic member 3 from being exposed and abraded during use, or hooking other structures and affecting use, making the external structure neat and beautiful; at the same time, the inner wall of the first sliding cavity 13 can limit the telescopic path of the elastic member 3, preventing the elastic member 3 from being entangled, etc., and improving the stability of the elastic member 3 when it is repeatedly telescoped.

[0053] Further, refer to Figure 1 and Figure 3 The connecting member 4 is provided with an escape opening 43, which extends from the hinge point of the connecting member 4 to the elastic force acting end 42, and the connecting member 4 is provided with a mounting roller 6 at the elastic force acting end 42. The elastic member 3 has two ends A and B, and the A end is arranged in the first sliding cavity 13. The B end extends from the opening 14 through the escape opening 43, bypasses the mounting roller 6, and turns back to extend into the first sliding cavity 13, and is connected to the adjustment locking mechanism 5 together with the A end;

[0054] The elastic member 3 belt body forms a U-shaped structure, and the A and B ends of the elastic member 3 belt body are arranged together on the main body support part 1 to form the adjustment end 32 of the elastic member 3, and the belt body wound around the installation roller 6 forms the movable end 31 of the elastic member 3. The elastic member 3 belt body is wound around the installation roller 6, and there is no need to set an additional connection or fixing structure between the elastic member 3 and the connecting member 4, which effectively reduces the difficulty of installation between the elastic member 3 and the connecting member 4, and the structure is simple and stable.

[0055] When in use, the wearer raises or lowers his arm to drive the rotating swing arm 2 to move, thereby driving the connecting member 4 to rotate, and the elastic member 3 is stretched or contracted synchronously, and swings in the avoidance opening 43 in the direction close to or away from the hinge point of the connecting member 4, so as to reduce the friction between the elastic member 3 and the connecting member 4, thereby reducing the wear of the elastic member 3 during use. In addition, both ends of the elastic member 3 belt body are hidden in the hollow rod body 11, so that the exposed part of the elastic member 3 extending from the opening 14 is complete, beautiful and neat, and the structure is more reliable.

[0056] Further, refer to Figure 3 , four mounting plates 19 are distributed around the opening 14, wherein a limiting roller 8 is rotatably mounted between two mounting plates 19 with opposite plate surfaces, and the axis of the limiting roller 8 is parallel to the axis of the hinge shaft of the connecting member 4, and the two limiting rollers 8 are respectively close to both sides of the opening 14, and the movable end 31 of the elastic member 3 passes between the two limiting rollers 8. When the connecting member 4 rotates to make the movable end 31 of the elastic member 3 deviate from the axis of the hollow rod body 11, the elastic member 3 abuts against the outer circumferential surface of the corresponding limiting roller 8, so as to reduce the wear caused by the swing of the elastic member 3 and improve the durability of the elastic member 3.

[0057] Preferably, the limiting roller 8 is configured as an I-shaped structure, that is, a groove is formed on the outer circumferential surface of the limiting roller 8 along the circumferential direction, and the elastic member 3 extends into the groove when swinging to further limit the elastic member 3 and improve the stability of the elastic member 3 during extension and swinging.

[0058] Further, refer to Figure 1 and Figure 2 The adjustment locking mechanism 5 includes a tensioning member 51 and a locking seat 52. The tensioning member 51 is connected to the adjustment end 32 of the elastic member 3, and the tensioning member 51 has an active amount for pulling the adjustment end 32 of the elastic member 3 to move. The locking seat 52 is arranged on the main body support part 1 and is used to lock the position of the tensioning member 51.

[0059] The tensioning member 51 is used to pull the adjusting end 32 of the elastic member 3 to change the tensioning degree of the elastic member 3, and the locking seat 52 is used to lock the tensioning member 51 to maintain the position of the adjusting end 32 of the elastic member 3, so as to adjust and maintain the tensioning degree of the elastic member 3, adjust the pulling force of the elastic member 3 on the connecting member 4, and then adjust the power assisting degree of the power assisting arm.

[0060] Further, refer to Figure 2The locking seat 52 includes a seat body 521 and at least one movable portion 522. The seat body 521 is fixedly mounted on the main support portion 1. The movable portion 522 is rotatably mounted on the seat body 521. The movable portion 522 has an end surface 523 that cooperates with the seat body 521 to clamp the tensioning member 51. The tensioning member 51 is arranged between the movable portion 522 and the seat body 521. The movable portion 522 is rotated so that its end surface 523 presses the tensioning member 51 against the seat body 521 to achieve locking of the tensioning member 51.

[0061] At the same time, the hollow rod body 11 is located at the seat body 521 and has a through hole 15 connected to the first sliding cavity 13. The end of the tensioning member 51 away from the elastic member 3 passes through the through hole 15, extends outward from the locking seat 52, and extends outward to be pulled by hand to adjust the position of the adjustment end 32 of the elastic member 3.

[0062] When the assisting force needs to be increased, the movable part 522 is rotated to make its end face 523 away from the seat body 521, the tensioning member 51 is released, and the tensioning member 51 is manually pulled to drive the adjusting end 32 of the elastic member 3 to move, so that the adjusting end 32 of the elastic member 3 is away from the movable end 31 of the elastic member 3. After the adjusting end 32 of the elastic member 3 is adjusted to a suitable position, the movable part 522 is rotated to make its end face 523 and the seat body 521 clamp the tensioning member 51, thereby maintaining the position of the adjusting end 32 of the elastic member 3, so as to achieve the purpose of stretching the elastic member 3 and increasing the assisting force of the elastic member 3.

[0063] When the assisting force needs to be reduced, the movable part 522 is rotated to move its end face 523 away from the seat body 521, and the tensioning member 51 is released to quickly release the assisting force. At this time, the elastic member 3 is reset under the action of its own elastic force and pulls the tensioning member 51 to move. When the adjusting end 32 of the elastic member 3 is reset to the desired position, the movable part 522 is rotated again to lock the tensioning member 51.

[0064] Preferably, a plurality of protrusions are formed on the end surface 523 of the movable portion 522. The protrusions can increase the friction between the end surface 523 and the tensioning member 51, thereby improving the locking effect.

[0065] In this embodiment, the tensioning member 51 is preferably a flexible drawstring, which is easy to implement, reduces the difficulty of setting the tensioning member 51, and facilitates the assembly of the overall structure.

[0066] At the same time, in order to facilitate the connection between the elastic member 3 and the tensioning member 51 , a connecting block 7 is provided at the connection between the elastic member 3 and the tensioning member 51 , and the A and B ends of the elastic member 3 and the tensioning member 51 are fixed to the connecting block 7 .

[0067] Further, refer to Figure 2The hollow rod body 11 includes a first rod body 111 and a second rod body 112, and the seat body 521 is sleeved on the ends of the first rod body 111 and the second rod body 112 that are close to each other to coaxially connect the first rod body 111 and the second rod body 112. The first sliding cavity 13 is opened in the first rod body 111, and the insertion opening 15 is formed by the gap between the first rod body 111 and the second rod body 112. The split design facilitates the assembly of the elastic member 3 and the tension member 51. The tension member 51 can be pulled out of the first rod body 111 and passed through the seat body 521, and then the first rod body 111 and the second rod body 112 are connected, which reduces the difficulty of assembly and improves the assembly efficiency. In other embodiments, the first rod body 111 and the second rod body 112 can also be integrally formed, and a insertion opening 15 is opened in the rod body. When assembling, the tension member 51 can be pulled out from the insertion opening 15.

[0068] Further, refer to Figure 2 The outer wall of the second rod body 112 is provided with a limit block 16, and the limit block 16 is provided with an L-shaped limit hole 17 for the tension member 51 to pass through, and the inner wall and the opening of the limit hole 17 are both configured as arc surfaces. The side wall of the limit hole 17 limits the moving path of the tension member 51, ensuring that the moving path of the tension member 51 located at the seat body 521 remains stable, thereby improving the matching accuracy between the tension member 51 and the seat body 521.

[0069] Preferably, the limit block 16 is close to the waist of the human body, so that the human hand can grab and pull the tensioning member 51. Moreover, the wearer can directly adjust the power size by using the tensioning member 51 without taking off the power arm, which simplifies the power adjustment steps and further improves the convenience of power adjustment.

[0070] The implementation principle of a passive power-assisting arm disclosed in the embodiment of the present application is as follows: after the locking seat 52 unlocks the tensioning member 51, the tensioning member 51 is pulled to drive the adjustment end 32 of the elastic member 3 to move in the first sliding cavity 13, thereby stretching the elastic member 3, and then locking the tensioning member 51 through the locking seat 52 to increase and maintain the elastic force of the elastic member 3, thereby increasing the power-assisting force; when the power-assisting force needs to be reduced, it is only necessary to unlock the locking seat 52, and the tensioning member 51 automatically resets under the elastic force of the elastic member 3, and when it is adjusted to a suitable position, the tensioning member 51 is locked again through the locking seat 52. The tensioning member 51 cooperates with the locking seat 52 to adjust the power-assisting force, and the adjustment process is simple and quick.

[0071] The present application also discloses a wearable device, referring to Figure 4, including at least one of the above passive power-assisting arms, and also including a waist belt 02 and a shoulder strap 01 connected to each other, the two ends of the main support part 1 are respectively connected to the waist belt 02 and the shoulder strap 01, the shoulder strap 01 is worn on the shoulders of the human body, and the waist belt 02 is tied around the waist of the human body to wear the power-assisting arm on the body. In this embodiment, the wearable device includes two of the above passive power-assisting arms, which are respectively used to assist the arms on both sides.

[0072] Specifically, refer to Figure 4 and Figure 5 The end of the second rod 112 away from the first rod 111 is provided with an adjustment seat 9, the second rod 112 is plugged into the adjustment seat 9 and fixed by bolts, the adjustment seat 9 is slidably penetrated by an extension rod 18, the extension rod 18 is coaxially arranged with the second rod 112, one end of the extension rod 18 is fixed to the waist belt 02, and the other end passes through the adjustment seat 9 and extends into the second rod 112. By adjusting the length of the extension rod 18 outside the second rod 112, the distance between the rotating swing arm 2 and the waist belt 02 can be adjusted to match wearers of different physiques and improve the adaptability of the wearable device.

[0073] At the same time, a locking screw 91 is screwed onto the adjustment seat 9, and the locking screw 91 is arranged along the radial direction of the extension rod 18. A locking block 92 is arranged at one end of the locking screw 91 close to the extension rod 18, and the side of the locking block 92 away from the locking screw 91 is attached to the surface of the extension rod 18. The locking screw 91 is rotated to move the locking screw 91 along the radial direction of the extension rod 18, and the distance between the locking block 92 and the extension rod 18 is adjusted to lock or release the extension rod 18, so as to adjust or fix the position of the extension rod 18.

[0074] The implementation principle of a wearable device disclosed in the embodiment of the present application is:

[0075] Turn the locking screw 91 and move it away from the extension rod 18 to unlock it. Change the extended length of the extension rod 18 according to the wearer's body size to adjust the position of the rotating swing arm 2 relative to the shoulder, thereby ensuring that the hinge point of the connecting piece 4 is close to the wearer's shoulder joint, thereby improving the adaptability of the power-assisting arm and thus improving the power-assisting effect.

[0076] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A passive power-assisting arm, characterized in that: include: Main body support portion (1); The connecting member (4) is rotatably mounted on the main body support portion (1) and has at least one fixed end (41) and one elastic force application end (42), wherein the fixed end (41) and the elastic force application end (42) are formed by the connecting member (4) body extending in two directions with the hinge point as the origin, and the angle between the extending directions of the fixed end (41) and the elastic force application end (42) is an obtuse angle; A rotating swing arm (2) fixed to a fixed end (41); An elastic member (3), wherein the movable end (31) of the elastic member (3) is connected to the elastic force acting end (42) and is used to pull the rotating swing arm (2) to rotate, and the adjusting end (32) of the elastic member (3) is movably arranged on the main body support portion (1); an adjustment locking mechanism (5) disposed on the main body support portion (1) and used to adjust and lock the position of the adjustment end (32) of the elastic member (3) on the main body support portion (1) so as to adjust the magnitude of the assisting force; the elastic member (3) extends from the elastic force acting end (42) to the adjustment locking mechanism (5); The main body support portion (1) is formed with a first sliding cavity (13) for accommodating the elastic member (3), and an opening (14) is formed at one end of the main body support portion (1) close to the connecting member (4), and the opening (14) is in communication with the first sliding cavity (13); The connecting member (4) is provided with a mounting roller (6) at the elastic force acting end (42), and a connecting block (7) for mounting the elastic member (3) is movably provided in the main body support portion (1); The elastic member (3) has two end portions A and B. The end portion A of the elastic member (3) is arranged in the first sliding cavity (13). The end portion B of the elastic member (3) extends from the opening (14), bypasses the mounting roller (6), and extends into the first sliding cavity (13). The end portions A and B of the elastic member (3) are both fixed to the connecting block (7), and the elastic member (3) has a U-shaped structure. The main body support portion is provided with at least one limiting roller at the opening, and when the movable end (31) of the elastic member (3) deviates from the main body support portion (1), the elastic member (3) abuts against the outer circumferential surface of the limiting roller (8); The adjustment locking mechanism (5) comprises a tensioning member (51) and a locking seat (52); the tensioning member (51) is connected to the adjustment end (32) of the elastic member (3); the tensioning member (51) has an active amount for pulling the adjustment end (32) of the elastic member (3) to move so that the adjustment end (32) of the elastic member (3) is away from the active end (31) of the elastic member (3); and the locking seat (52) is used to lock the position of the tensioning member (51); the tensioning member (51) is a flexible pull rope.

2. A passive power-assisting arm according to claim 1, characterized in that: The locking seat (52) comprises a seat body (521) and at least one movable portion (522); the seat body (521) is mounted on the main body support portion (1); the movable portion (522) is movably arranged on the seat body (521); and the movable portion (522) has at least one end surface (523) that cooperates with the seat body (521) to clamp the tensioning member (51).

3. A passive power-assisting arm according to claim 2, characterized in that: The end surface (523) is formed with a plurality of protrusions.

4. The passive power-assisting arm according to claim 1, characterized in that: The main body support portion (1) is formed with a penetration opening (15), and the penetration opening (15) is connected to the first sliding cavity (13) so as to allow the tensioning member (51) to extend from the first sliding cavity (13).

5. A wearable device, comprising a waist belt (02) and a shoulder strap (01), wherein the shoulder strap (01) is connected to the waist belt (02), the shoulder strap (01) is used to be worn on the shoulders of a human body, and the waist belt (02) is used to be tied around the waist of a human body, characterized in that: A passive power-assist arm comprising the embodiment of any one of claims 1 to 4, further comprising an extension rod (18) and an adjustment seat (9), wherein the adjustment seat (9) is fixed to a main support portion (1), the extension rod (18) is passed through the adjustment seat (9), one end of the extension rod (18) is fixed to a waist belt (02), and the other end extends into the main support portion (1), the adjustment seat (9) is provided with a locking screw (91) for locking the position of the extension rod (18), and the end of the main support portion (1) away from the extension rod (18) is fixed to the shoulder strap (01).

6. A wearable device according to claim 5, characterized in that: A locking block (92) is provided at the end of the locking screw (91) close to the extension rod (18); the locking block (92) is fitted to the extension rod (18); and the locking screw (91) drives the locking block (92) to move in a direction close to or away from the extension rod (18).

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