CN115066278B

CN115066278B - Intelligent chest expander for body-building

Info

Publication number: CN115066278B
Application number: CN202080005256.5A
Authority: CN
Inventors: 杨燕梅; 吴彪; 罗家文; 吴松坤
Original assignee: Shenzhen Osmartlink Technology Co Ltd
Current assignee: Shenzhen Osmartlink Technology Co Ltd
Priority date: 2020-10-20
Filing date: 2020-12-24
Publication date: 2023-09-19
Anticipated expiration: 2040-12-24
Also published as: EP4011462C0; US20220118305A1; EP4011462A4; KR20220054239A; EP4011462B1; CN115066278A; EP4011462A1; JP2023502185A; KR102617242B1; JP7333820B2

Abstract

An intelligent chest expander for body building comprises an elastic rope (110), a motion sensing detection device (10), a fixed pulley assembly (130) and an adjustor (140). The elastic rope (110) has elasticity, and the motion sensing detection device (10) is arranged at one end of the elastic rope (110). The regulator (140) includes casing (141) and wrapping post (142), and wrapping post (142) are located casing (141), and the other end of bungee cord (110) penetrates in casing (141) to around locating behind wrapping post (142), wear out from casing (141), behind fixed pulley subassembly (130) with casing (141) fixed connection are walked around to the other end of bungee cord (110).

Description

Intelligent chest expander for body-building

Technical Field

The application relates to the technical field of fitness equipment, in particular to an intelligent chest expander for fitness.

Background

The body-building intelligent chest expander can help people to exercise muscles, help to shape body curves and effectively improve physical quality, so that the intelligent chest expander is deeply favored by wide body-building lovers, and is composed of two handles and an elastic rope body. Because the body-building intelligent chest expander has the characteristics of small occupied area, portability and the like, the indoor body-building equipment can perform whole body exercises such as strength, flexibility, stretching and the like by a sporter at any time and any place, and is very high in freedom degree. However, when the existing body-building intelligent chest expander is used for exercise of a sporter, data statistics cannot be carried out for the exercise process of the sporter, and the intelligent degree is not high. And when the length of the elastic rope is adjusted, the adjusting buckle has shearing force on the elastic rope, and the elastic rope is easy to break after long-time use.

Disclosure of Invention

The present disclosure is directed to solving at least one of the technical problems existing in the prior art.

The intelligent chest expander for body building according to the embodiment of the application comprises a bungee cord, a motion sensing detection device, a fixed pulley component and an adjustor. The elastic rope is elastic, the motion sensing detection device is arranged at one end of the elastic rope, a battery, a circuit board and a tension sensor are arranged in the motion sensing detection device, the motion sensing detection device further comprises a protection shell, a containing cavity is formed in the protection shell, the circuit board is arranged in the containing cavity, the battery and the tension sensor are electrically connected with the circuit board, the regulator comprises a shell and a winding column, the winding column is arranged in the shell, the other end of the elastic rope penetrates into the shell and winds around the winding column, then penetrates out of the shell, and the other end of the elastic rope bypasses the fixed pulley assembly and then is fixedly connected with the shell.

According to the intelligent chest expander for body building, the winding post is arranged in the shell, the elastic rope is wound on the winding post, when a user sends one part of the elastic rope into the shell of the regulator, the elastic rope can move relative to the winding post, and due to limited space in the shell, the other part of the elastic rope is extruded from the shell under the driving of the elastic rope, so that the distance between the regulator and one end of the elastic rope can be regulated, and the length of the intelligent chest expander can be regulated; when the intelligent chest expander is used, the two parts of the elastic rope are respectively stressed by tension, and the larger the tension is, the larger the winding force of the elastic rope on the winding column is, so that the elastic rope can be positioned. In addition, through setting up tension sensor in the one end of elastic cord, can detect the pulling force that elastic cord bore to can monitor, record user's training condition, the user of being convenient for carries out the fine planning to training.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic view of a construction of an intelligent chest expander according to an embodiment of the present application;

FIG. 2 is a schematic view of the structure of the lower casing of the intelligent chest expander according to an embodiment of the present application;

FIG. 3 is a schematic structural view of an upper case of the intelligent chest expander according to an embodiment of the present application

FIG. 4 is a cross-sectional view of a housing of the intelligent chest expander according to an embodiment of the present application;

FIG. 5 is a schematic view of a motion sensing device of an intelligent chest expander according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a protective housing of the intelligent chest expander according to an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of the protective case of the intelligent chest expander according to another view angle of the protective case of the intelligent chest expander in accordance with an embodiment of the present application;

FIG. 8 is a schematic view of the structure of the connection housing of the intelligent chest expander according to an embodiment of the present application;

FIG. 9 is a schematic view showing a partial structure of a motion sensing device of the intelligent chest expander according to an embodiment of the present application;

FIG. 10 is a schematic view of a smart chest expander for exercise according to an embodiment of the present application;

FIG. 11 is a schematic illustration of a bungee cord and regulator according to an embodiment of the present application;

FIG. 12 is an exploded view of a part of the construction of the intelligent chest expander according to an embodiment of the present application;

fig. 13 is a schematic view of the structure of the lower case and the winding post according to an embodiment of the present application;

FIG. 14 is an exploded view of a part of the construction of the intelligent chest expander according to an embodiment of the present application;

FIG. 15 is a schematic view of the gear and ratchet assembly according to an embodiment of the present application;

FIG. 16 is a schematic view of the structure of the gear separated from the ratchet teeth according to the embodiment of the present application;

FIG. 17 is an exploded view of the upper and lower shells according to an embodiment of the present application;

FIG. 18 is a schematic view of an assembly of a toggle handle, a ratchet-and-ratchet assembly, a winding post, and a connecting post in accordance with an embodiment of the present application;

FIG. 19 is an exploded view of a toggle handle, ratchet-and-pawl assembly, winding post, and connecting post in accordance with an embodiment of the present application;

FIG. 20 is a schematic view of a first lower housing, a second lower housing and a toggle handle according to an embodiment of the present application;

FIG. 21 is a schematic view of an intelligent chest expander according to an embodiment of the present application;

FIG. 22 is a schematic diagram of a key according to an embodiment of the present application;

FIG. 23 is a schematic view of a housing according to an embodiment of the application;

FIG. 24 is a schematic diagram of a motion sensing detection device according to an embodiment of the present application;

FIG. 25 is a schematic diagram of a motion sensing detection device according to an embodiment of the application;

fig. 26 is a schematic view of a plug connector according to an embodiment of the present application.

Reference numerals:

intelligent chest expander 100, bungee cord 110, battery 121, tension sensor 124,

the connection housing 125, the boss 1251, the limit slot 1252,

a first cavity 1261, a second cavity 1262, a support rib 1263, a slot 1264, a limit rib 1265,

the fixed sheave assembly 130, the adjuster 140,

the shell 141, the hard framework 1411, the reinforcing ribs 1412, the wire passing channel 1413, the straight line segment 1414, the widened segment 1415, the soft rubber layer 1416, the wire outlet 145, the winding post 142,

the upper case 143, the positioning groove 1431, the first clamping portion 1432,

the lower housing 144, the second clamping portion 1441, the screw post 1442, the mounting cavity 1443, the first lower housing 4121; a second lower case 4122; a through hole 4123;

a ratchet assembly 43; a positioning column 4111; screw posts 4112; a gear 431;

ratchet teeth 432; a main body 4321; engagement portion 4322; a protrusion 4323; perforation 4324;

toggle handle 433; a connection part 4331; a toggle 4332; a reset member 434; a mounting portion 4341;

a connecting column 50; the avoidance groove 51; a first connection end 52; a second connection end 53; a step 54; pull ring 90;

a motion sensing detection device 10; a protective case 11; a first protective housing 12; a second protective case 13; a housing chamber 14; a key hole 15; a circuit board 16; a switch 17; a limit projection 19;

A key 20; a pressing portion 21; a pressure transmitting section 22; a first sealing portion 23; a pressing surface 24; a first sealing bevel 25; a second sealing ramp 26; a plug 28; a plug hole 29; a sealing plug 30; a fixing portion 31; a connection portion 32; a second seal portion 33; a stopper 34; and a seal ring 35.

Detailed Description

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present disclosure and are not to be construed as limiting the present disclosure.

An intelligent chest expander 100 for exercise according to an embodiment of the present application is described below with reference to FIGS. 1-9.

As shown in fig. 1, the intelligent chest expander 100 for exercise according to an embodiment of the present application includes a bungee cord 110, a motion sensing and detecting device 10, a fixed sheave assembly 130, and an adjustor 140.

Specifically, the elastic cord 110 has elasticity, the motion sensing device 10 is disposed at one end of the elastic cord 110, and the battery 121, the circuit board 16 and the tension sensor 124 are disposed in the motion sensing device 10, and the battery 121 and the tension sensor 124 are electrically connected to the circuit board 16. It should be noted that, the tension sensor 124 may be used to detect the tension borne by the elastic cord 110, the tension sensor 124 transmits the detected data to the electrical components on the circuit board 16, and the corresponding electrical components convert the information detected by the tension sensor 124 into an information form readable by the user through data conversion, so that the user can know the tension applied to the intelligent chest expander 100. In addition, the tension sensor 124 can also cooperate with the elastic resistance of the elastic cord 110 to adjust the overall length of the intelligent chest expander 100, so that the length of the intelligent chest expander 100 can meet the requirements of different users. In addition, it should be noted that the battery 121 may supply power to the tension sensor 124 and the electrical components on the circuit board 16.

As shown in fig. 2 to 4, the regulator 140 includes a housing 141 and a winding post 142, and the winding post 142 is positioned in the housing 141. The other end of the elastic cord 110 penetrates into the housing 141 and is wound around the winding post 142, then penetrates out of the housing 141, and the other end of the elastic cord 110 is fixedly connected with the housing 141 after bypassing the fixed pulley assembly 130, and the winding path of the elastic cord 110 is shown by an arrow in fig. 2. It should be noted that, after the other end of the elastic cord 110 is threaded out from the housing 141, it passes through the fixed pulley assembly 130 and is connected to the housing 141, so that the length of the elastic cord 110 can be automatically adjusted, and the lengths of the elastic cords 110 on both sides of the fixed pulley assembly 130 can be balanced.

It can be appreciated that the regulator 140 can divide the elastic cord 110 into two parts, wherein one part is from one end of the elastic cord 110 to the regulator 140, and the motion sensing detection device 10 is arranged on the part, so that a user can apply a pulling force to the elastic cord 110 by pulling the motion sensing detection device 10 during training, and meanwhile, the motion sensing detection device 10 can detect the pulling force; another portion is from the other end of the bungee cord 110 to the adjuster 140, where the bungee cord 110 is passed around the fixed pulley assembly 130 and a user may apply tension to the bungee cord 110 by pulling the fixed pulley assembly 130 during training.

When the intelligent chest expander 100 is used, the two parts of the elastic rope 110 are respectively stressed by tension, under the action of the tension, the elastic rope 110 is wound on the winding post 142, and the larger the tension is, the larger the winding force of the elastic rope 110 on the winding post 142 is, so that the relative position between the elastic rope 110 and the winding post 142 is difficult to change, and the winding post 142 has a positioning effect on the elastic rope 110. When the intelligent chest expander 100 is in a natural state, the elastic rope 110 is not acted by external force, the elastic rope 110 is wound on the winding posts 142 in a natural state, no acting force exists between the winding posts 142 and the elastic rope 110, when a user sends a part of the elastic rope 110 into the shell 141 of the regulator 140, the elastic rope 110 can move relative to the winding posts 142, and as the space in the shell 141 is limited, another part of the elastic rope 110 is extruded from the shell 141 under the driving of the elastic rope 110, so that the distance between the regulator 140 and one end of the elastic rope 110 can be regulated, and the length of the intelligent chest expander 100 can be regulated.

Of course, it is also understood that when the intelligent tensioner 100 is in the natural state, the user applies force to the elastic cord 110 located at one side of the regulator 140, and the user drives the regulator 140 to move along the elastic cord 110, at this time, the elastic cord 110 can move around the winding post 142, and the length of the elastic cord 110 located at one side of the regulator 140 and the length of the elastic cord 110 located at the other side of the regulator 140 are all in the changed state, i.e. the entire length of the intelligent tensioner 100 can be adjusted at this time.

According to the intelligent chest expander 100 for body building in the embodiment of the application, the winding post 142 is arranged in the shell 141, the elastic rope 110 is wound on the winding post 142, when a user sends a part of the elastic rope 110 into the shell 141 of the regulator 140, the elastic rope 110 can move relative to the winding post 142, and due to limited space in the shell 141, the other part of the elastic rope 110 is extruded from the shell 141 under the driving of the elastic rope 110, so that the distance between the regulator 140 and one end of the elastic rope 110 can be regulated, and the length of the intelligent chest expander 100 can be regulated; when the intelligent chest expander 100 is used, the two parts of the elastic rope 110 are respectively stressed by tension, and the larger the tension is, the larger the winding force of the elastic rope on the winding post is, so that the elastic rope 110 can be positioned. In addition, by arranging the tension sensor 124 at one end of the elastic rope 110, the tension born by the elastic rope 110 can be detected, so that the training condition of the user can be monitored and recorded, and the user can plan the training in a fine way.

As shown in fig. 3, the housing 141 may be a two-shot molded part and includes a hard frame 1411 and a soft gel layer 1416 coated on the hard frame 1411. It should be noted that, the double-shot injection molding is an injection molding mode in the secondary injection molding, and in the process of the secondary injection molding, injection molding materials can be different colors, so that the observation of a molding structure is facilitated, and the product quality is facilitated to be improved. The molding process of the double-color injection molding is simple, and the hard framework 1411 can provide a strong supporting force for the shell 141, so that the overall structural strength of the shell 141 can be improved. In addition, as shown in fig. 2 and 3, the rigid frame 1411 extends toward the interior of the housing 141 with the reinforcing bars 1412 defining the cord passage 1413, and the portion of the bungee cord 110 located within the housing 141 is located within the cord passage 1413. On the one hand, by defining the cord passage 1413 with a rigid structure, the strand of the bungee cord 110 within the housing 141 can be effectively defined, thereby facilitating the positioning of the regulator 140; on the other hand, the reinforcing rib 1412 also has a supporting function, and can effectively reinforce the overall strength of the case 141.

According to some embodiments of the present application, as shown in fig. 2 and 3, the wire passing channel 1413 may include a straight line segment 1414 and a widened segment 1415, the straight line segment 1414 extending along a straight line, the straight line segment 1414 being in communication with the widened segment 1415, the widened segment 1415 having a minimum width wider than a maximum width of the straight line segment 1414, and the wire winding post 142 being disposed within the widened segment 1415. It should be noted that the straight segment 1414 may define the direction of the elastic cord 110 inside the case 141; when the elastic cord 110 is wound on the winding post 142, the widened section 1415 needs to occupy a larger space, and the widened section 1415 can be used for accommodating the elastic cord 110 wound on the winding post 142, so that the relative position of the shell 141 and the elastic cord 110 can be conveniently adjusted. Further, for convenience of adjustment, when the elastic cord 110 is wound around the winding post 142, the elastic cord 110 may be wound around one turn.

As shown in fig. 4, for convenience in mounting the elastic cord 110 inside the case 141, the case 141 may include an upper case 143 and a lower case 144 in some embodiments. Wherein, the upper case 143 and the lower case 144 are connected to define a mounting cavity 1443, one end of the winding post 142 is connected to the lower case 144, a positioning groove 1431 is formed in the upper case 143, and the other end of the winding post 142 is positioned in the positioning groove 1431. It should be noted that, by setting the positioning groove 1431 and setting the free end of the winding post 142 in the positioning groove 1431, on one hand, the winding post 142 can be limited by using the positioning groove 1431, and on the other hand, the winding post 142 can be supported by using the groove wall of the positioning groove 1431, so as to prevent the winding post 142 from tilting and bending when receiving the tension of the elastic cord 110.

To facilitate securing the upper and lower shells 143, 144 together, in some embodiments, as shown in fig. 4, the lower shell 144 has screw posts 1442, the screw posts 1442 extending toward the upper shell 143, the screws threaded through the upper shell 143 and into the screw posts 1442, so that the upper and lower shells 143, 144 can be assembled together. Whereby the upper case 143 and the lower case 144 can be fixed with screws. To facilitate the fixation of the screw, the screw may be fixed by a screw post 1442 provided on the lower case 144, so that the screw may be fixed by the screw post 1442.

Note that, the fixing manner of the upper case 143 and the lower case 144 is not limited to this, as long as it can fixedly connect the upper case 143 and the lower case 144 together, for example, in some examples, as shown in fig. 2 and 3, the upper case 143 has a first clamping portion 1432, the lower case 144 has a second clamping portion 1441, the first clamping portion 1432 is clamped with the second clamping portion 1441, and one of the first clamping portion 1432 and the second clamping portion 1441 is a clamping groove, and the other is a clamping hook. Further, the first clamping portion 1432 and the second clamping portion 1441 may be a plurality of first clamping portions 1432 and a plurality of second clamping portions 1441 respectively. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

According to some embodiments of the present application, as shown in fig. 5, the motion sensing device 10 may include a connection housing 125 and a protection housing 11, the connection housing 125 is connected to the protection housing 11, the connection housing 125 is connected to one end of the elastic string 110, and the circuit board 16, the battery 121, and the tension sensor 124 are provided in the protection housing 11. Therefore, interference between the parts in the connecting shell 125 and the inside of the protective shell 11 is avoided, and meanwhile, when the parts in the protective shell 11 are disassembled and maintained, the parts in the connecting shell 125 cannot be influenced, so that the whole service life of the intelligent chest expander 100 can be prolonged.

As shown in fig. 9, in some examples, the protective case 11 has a first cavity 1261 and a second cavity 1262 therein, the battery 121 and the circuit board 16 are located in the first cavity 1261, the tension sensor 124 is located in the second cavity 1262, and a support rib 1263 is provided in the second cavity 1262, and the support rib 1263 is used for supporting the tension sensor 124. Thereby, the assembling stability of the tension sensor 124 can be improved, and thus the detection accuracy of the tension sensor 124 can be improved.

To facilitate the connection of the protective case 11 and the connection case 125 together, in the example shown in fig. 5-8, the end of the connection case 125 facing the protective case 11 has a protrusion 1251, the end of the protective case 11 facing the connection case 125 has a groove 1264, and when the connection case 125 is rotationally snap-coupled with the protective case 11, the protrusion 1251 is rotationally snapped into the groove 1264 following the connection case 125. It will be appreciated that the protrusions 1251 may extend in the direction of the rotational snap fit of the protective shell 11, with the protrusions 1251 rotating into the slots 1264 while the connection shell 125 rotates relative to the protective shell 11 when the connection shell 125 is mounted to the protective shell 11. When the protrusion 1251 is mated with the groove 1264, the connection shell 125 is assembled with the protection shell 11.

Further, in order to prevent the protrusion 1251 from being separated from the groove body 1264, as shown in fig. 7 and 8, the free end of the protrusion 1251 is provided with a limit groove 1252, the inner bottom wall of the groove body 1264 is provided with a limit convex strip 1265, and the limit convex strip 1265 is embedded in the limit groove 1252. Therefore, the protrusion 1251 can be stably limited in the groove body 1264 by clamping the limit convex strips 1265 in the limit groove 1252, so that the assembly stability of the connection shell 125 and the protection shell 11 can be improved, and the connection shell 125 and the protection shell 11 can be prevented from being separated by accident.

The regulator 140 further comprises a winder, the elastic cord 110 is wound in the winder, the other end of the elastic cord 110 penetrates into the shell 141 and is wound on the winder and then penetrates out of the shell 141, and the other end of the elastic cord 110 is fixedly connected with the shell 141 after bypassing the fixed pulley assembly 130.

The cord reel is adapted to control the storage of the intelligent tensioner 100 into the cord reel or the release of the bungee cord 110 from the cord reel to adjust the natural length of the intelligent tensioner 100. When the overall length of the intelligent chest expander 100 needs to be adjusted, the elastic cord 110 can be released by controlling the reel, or the elastic cord 110 can be stored, so that the overall length of the intelligent chest expander 100 can be adjusted. Thus, not only can the structure of the regulator 140 be simplified, but also the wearing of the elastic cord 110 by the clamping component can be avoided, thereby protecting the elastic cord 110 and prolonging the service life of the elastic cord 110. In addition, the reel may be selectively configured to have a level adjustment, for example, the reel may release or store the elastic cord 110 in a predetermined length ratio, that is, the reel may release or store the elastic cord 110 in the same length each time the length of the elastic cord 110 is adjusted.

According to some embodiments of the present application, as shown in fig. 2 and 3, the wire passing channel 1413 includes a straight line segment 1414 and a widened segment 1415, the straight line segment 1414 extends along a straight line, the straight line segment 1414 communicates with the widened segment 1415, the minimum width of the widened segment 1415 is wider than the maximum width of the straight line segment 1414, and the wire winder is disposed in the widened segment 1415. It should be noted that, the straight section 1414 may limit the trend of the elastic cord 110 in the housing 141, and the widened section 1415 may accommodate a reel, so as to facilitate setting the reel to adjust the relative position of the housing 141 and the elastic cord 110.

To facilitate mounting of the bungee cord 110 inside the housing 141, in some embodiments, the housing 141 includes an upper shell 143 and a lower shell 144. Wherein the upper case 143 and the lower case 144 are coupled to define a mounting chamber 1443, a reel may be disposed in the mounting chamber 1443. Thus, when the reel is mounted inside the case 141, the reel may be first placed inside the lower case 144, then the upper case 143 is fastened, and then the upper case 143 and the lower case 144 are fixedly connected, so that the reel may be fixed inside the case 141.

Referring to fig. 4 to 8, in some embodiments, the case 141 has a wire outlet hole 145, the elastic cord 110 is penetrated into the wire outlet hole 145, and the wire outlet hole 145 has rounded corners. It should be noted that, during the use of the elastic cord 110, the elastic cord 110 is suitable for friction and interference with the housing 141, which may reduce the structural strength of the elastic cord 110, thereby affecting the safety of the elastic cord 110. Like this, go out through wire hole 145 and be equipped with the fillet, the fillet is applicable to and contradicts with elastic cord 110 to can reduce the friction between casing 141 and the elastic cord 110, promote intelligent chest expander 100's structural strength, and then promote intelligent chest expander 100's security and stability. Further, the radius of the rounded corner is set to 3-6mm, so that the rounded corner can be more fitted to the elastic cord 110, and thus friction between the case 141 and the elastic cord 110 can be further reduced. Moreover, the relatively small radius of the rounded corners enables the rounded corners to be more matched with the shell 141, so that the production efficiency of the shell 141 is improved.

As shown in fig. 12-20, the regulator 140 may also include a ratchet assembly 43. The ratchet assembly 43 is coupled to the housing 141, and the ratchet assembly 43 is used to selectively fix the spool 142 or release the spool 142 to adjust the length of the intelligent tensioner 100.

As shown in fig. 12-19, the ratchet assembly 43 may include a gear 431, a ratchet 432, and a toggle handle 433, where the gear 431 is disposed on the winding post 142, and the gear 431 rotates coaxially with the winding post 142, the ratchet 432 is meshed with the gear 431, and the toggle handle 433 is disposed outside the housing 141 for being toggled by a user, and the toggle handle 433 is fixedly connected with the ratchet 432. When the toggle handle 433 is toggled, the toggle handle 433 drives the ratchet 432 to rotate, the ratchet 432 is separated from the gear 431, the spool 142 is rotatable, and the elastic cord 110 is movable around the spool 142 to adjust the distance between one end of the elastic cord 110 and the regulator 140. By setting the toggle handle 433, the length of the intelligent chest expander 100 can be adjusted with the user, and the structural stability of the ratchet assembly 43 is good when the adjustment is not needed.

For example, the ratchet 432 and the gear 431 each have a plurality of teeth disposed at intervals, when the toggle handle 433 is in an initial state, at least one tooth of the ratchet 432 is stopped between two adjacent teeth of the gear 431, and at least one tooth of the gear 431 is stopped between two adjacent teeth of the ratchet 432, so that the ratchet 432 and the gear 431 can be mutually limited, and since the gear 431 and the winding post 142 rotate coaxially, the winding rod can not rotate, the toggle handle 433 can separate the gear 431 and the ratchet 432 from each other, so that the winding rod can rotate, thereby realizing the length adjustment of the intelligent chest expander 100, and the step adjustment of the intelligent chest expander 100 is realized through the arrangement of the gear 431 and the ratchet 432. Of course, in other embodiments, the ratchet assembly 43 assembly may also have a pawl or the like structure to provide stepless adjustment of the ratchet assembly 43. In the description of the present application, "plurality" means two or more.

In some embodiments, the ratchet assembly 43 further comprises: a return member 434, the return member 434 being connected to the ratchet 432 to drive the ratchet 432 into constant engagement with the gear 431. Thus, after the user adjusts the length of the intelligent chest expander 100, the user does not need to control the toggle handle 433 to reset, and the operation steps of the user are reduced. For example, the reset member 434 may have a mounting post, and the reset member 434 may be coupled to the mounting post to drive the driving ratchet 432 into constant engagement with the gear 431.

According to an embodiment of the present application, as shown in fig. 15, a connection post 50 is connected between a ratchet 432 and a toggle handle 433, and a plurality of ribs are provided on the connection post 50 to improve structural reliability, the ribs are spaced apart along a circumferential direction of the connection post 50, for example, a plurality of escape grooves 51 spaced apart along a circumferential direction of a through hole 4324 may be provided on the ratchet 432, a plurality of escape grooves 51 corresponding to the protrusions 4323 may be provided on the ratchet 432, the protrusions 4323 may extend into the escape grooves 51, and when the connection post 50 rotates, the arrangement of the escape grooves 51 may enable the protrusions 4323 to move together, so that reliability of the connection post 50 driving the ratchet 432 to rotate may be improved. Alternatively, the coupling post 50 has a plurality of escape grooves 51, and the ratchet 432 has protrusions 4323, which are not limited thereto.

The reset element 434 is a torsion spring, the torsion spring is sleeved on the connecting column 50, one end of the torsion spring is abutted against the shell 141, and the other end of the torsion spring is abutted against the toggle handle 433. Through the setting of torsional spring, can make the toggle handle 433 slowly reset under the effort of torsional spring, reduce the operation steps of user's adjustment intelligence chest expander 100. For example, the torsion spring may have a mounting portion 4341 extending toward the case 141, the case 141 may have a mounting hole or a mounting groove, and the mounting portion 4341 may protrude into the mounting hole or the mounting groove to improve the reliability of the installation of the torsion spring with the case 141.

For example, when the tap handle 433 is in an initial state, referring to fig. 15, the ratchet 432 and the gear 431 are restricted from each other, and the winding post 142 does not rotate when the user pulls the intelligent chest expander 100. When the user wants to adjust the length of the intelligent chest expander 100, the user can toggle the toggle handle 433, the reset piece 434 can rotate along with the toggle handle 433, and meanwhile, the connecting column 50 of the toggle handle 433 can drive the ratchet 432 to move so as to separate the ratchet 432 from the gear, and in combination with fig. 16, the ratchet 432 can not limit the gear 431 at this time, so that the winding column 142 can rotate, the user can rotate the winding column 142 by pulling the elastic rope 110 and the like, and meanwhile, the elastic rope 110 can be wound or released, so that the length of the intelligent chest expander 100 can be changed, and the length of the intelligent chest expander 100 can be adjusted. When the user stops to toggle the toggle handle 433, under the action of the reset piece 434, the toggle handle 433 can be slowly reset until the initial state is restored, and the ratchet 432 and the gear 431 are mutually limited, so that the winding post 142 cannot rotate, and thus, the length adjustment of the intelligent chest expander 100 is completed.

In some embodiments, the toggle handle 433 includes a connection portion 4331 and a toggle portion 4332 connected to the connection portion 4331, where the connection portion 4331 is connected to the ratchet 432, and the toggle portion 4332 is in a strip shape, so that a user can conveniently toggle, and meanwhile, the connection portion 4331 may be in a circular shape, so that the connection portion 4331 is distinguished from the ratchet 432 in shape, and thus the user can conveniently operate the device.

For example, both ends of the intelligent chest expander 100 may have pull rings 90, a user may insert his or her hands into one of the pull rings 90, and the other end of the pull ring 90 may be tied to the ankle for exercise. Alternatively, a user may extend his or her hand into pull ring 90 at one of its ends, and the user may attach one of its ends to an object having a greater weight to perform exercise. Of course, the intelligent chest expander 100 can also have a plurality of using methods, which are not limited herein.

In some examples, as shown in fig. 14-16, the ratchet 432 includes a body portion 4321 and an engagement portion 4322 connected to the body portion 4321, the body portion 4321 being connected to the tap handle 433, the engagement portion 4322 engaging with the gear 431 to ensure reliability of restriction between the ratchet 432 and the gear 431. The main body 4321 may have a through hole 4324, and the connection post 50 may be inserted through the through hole 4324 to enable the connection post 50 to be assembled with the ratchet 432, so that the connection post 50 drives the ratchet 432 to rotate, and meanwhile, the installation reliability of the connection post 50 and the ratchet 432 may be improved.

According to one embodiment of the present application, the ratchet 432 and the tap handle 433 are integrally formed to simplify steps, facilitate assembly, improve assembly efficiency, and have a stable and reliable structure. Or the ratchet 432 can be connected with the toggle handle 433 through a screw, so that the consistency of the movement of the ratchet 432 and the toggle handle 433 can be effectively ensured in the above manner. Of course, the ratchet 432 and the toggle handle 433 can be engaged in various manners, which is not limited herein.

In some embodiments, referring to fig. 17, the case 141 may include an upper case 143 and a lower case 144, the upper case 143 and the lower case 144 being connected, one end of the winding post 142 being connected to the lower case 144, and the other end of the winding post 142 extending toward the upper case 143, so that the smart chest expander 100 can be easily disassembled and assembled.

The upper case 143 may have a positioning groove (not shown) in which the other end of the winding post 142 is positioned, so that the reliability of the connection of the winding post 142 with the upper case 143 may be improved. Of course, the upper shell 143 or the lower shell 144 may also have a positioning post 4111, and the winding post 142 may be sleeved on the positioning post 4111, so that, on one hand, positioning and installation may be facilitated, and connection is stable, and on the other hand, when the winding post 142 rotates, the positioning post 4111 may prevent the winding post 142 from generating displacement in an axial direction to be separated from the upper shell 143.

In some embodiments, a plurality of screw posts 4112 are provided in the upper housing 143, the screw posts 4112 extend toward the lower housing 144, the upper housing 143 and the lower housing 144 may be connected by screws, which may be connected to the screw posts 4112, for example, the lower housing 144 may also be provided with a plurality of screw posts 4112 to further improve the mounting reliability, and screws may be inserted through the screw posts 4112 of the upper housing 143 and the screw posts 4112 of the lower housing 144 to fix them. Alternatively, the upper case 143 and the lower case 144 are coupled by snap-fit. Of course, in other embodiments, the upper shell 143 and the lower shell 144 may be mounted in a variety of ways, which are not limited herein.

For example, in conjunction with fig. 14 and 20, the lower case 144 may further include a first lower case 4121 and a second lower case 4122, and the first lower case 4121 and the second lower case 4122 may be fixed by a plurality of fasteners 80 to secure mounting reliability of both. The second lower housing 4122 is disposed between the toggle handle 433 and the first lower housing 4121, and the connecting post 50 may have a first connecting end 52 and a second connecting end 53, and the first connecting end 52 may extend into the through hole 4123 of the second lower housing 4122, so as to improve the installation reliability of the lower housing 144 and the connecting post 50. The diameter of the first connection end 52 may be smaller than that of the second connection end 53 to form the stepped portion 54, so that, on one hand, the diameter of the through-hole 4123 may be reduced to ensure structural reliability of the lower case 144, and on the other hand, the stepped portion 54 may avoid the bottom wall of the through-hole 4123 to prevent friction caused by the contact of the second lower case 4122 with the connection post 50. The avoidance groove 51 may be disposed at the second connection end 53, and the second connection end 53 thus disposed has better structural reliability.

The following describes the motion sensing apparatus 10 of the intelligent chest expander 100 according to the embodiment of the present application with reference to fig. 21 to 26, and the motion sensing apparatus 10 can be applied to the intelligent chest expander 100 so that the motion state of the user using the intelligent chest expander 100 can be detected.

As shown in conjunction with fig. 21, 22 and 24, the motion sensing detection apparatus 10 may mainly include: the protection shell 11, the circuit board 16, the switch 17 and the button 20, wherein, be formed with the relatively airtight chamber 14 of acceping in the protection shell 11, still set up on the surface of protection shell 11 and hold the button hole 15 that the chamber 14 is linked together, circuit board 16 and switch 17 are all installed and are set up in the relatively airtight chamber 14 of acceping of protection shell 11, protection shell 11 can be made by the material of relative hardness, so set up, protection shell 11 not only can prevent that external foreign matter from getting into and acceping in the chamber 14 and damaging circuit board 16 and switch 17, and when motion sensing device 10 receives external force impact, protection shell 11 can protect circuit board 16 and switch 17 from damaging, thereby can promote motion sensing device 10's structural reliability, and then can prolong motion sensing device 10's life.

As shown in fig. 24, the circuit board 16 may be used for motion sensing detection, the switch 17 may be disposed on the circuit board 16, and the switch 17 may correspond to the key hole 15, where the switch 17 may selectively control the opening or closing of the circuit board 16, specifically, when the intelligent chest expander 100 is in a use state, a user may control the switch 17 to open the circuit board 16, so as to enable the user to perform sensing detection on the motion, and when the user does not use the intelligent chest expander 100, the user may control the switch 17 to close, so that the circuit board 16 stops working.

As shown in fig. 22, the key 20 is an elastic key, and the key 20 is disposed in the key hole 15, and the key 20 may mainly include: the pressing part 22, the pressure transmitting part 22 and the first sealing part 23, the pressing part 22 is provided with a pressing surface 24, the first sealing part 23 is arranged at the peripheral edge of the pressing part 22, the first sealing part 23 can be in sealing fit with the peripheral wall of the button hole 15, the pressure transmitting part 22 is arranged in the first sealing part 23, and the pressing part 22 is matched with the switch 17 through the pressure transmitting part 22, when a user presses the pressing surface 24 of the pressing part 22, the pressing part 22 elastically deforms towards the side close to the pressure transmitting part 22, the pressure transmitting part 22 is pressed, the pressed pressure transmitting part 22 elastically deforms towards the side of the switch 17, so that the switch 17 is triggered, the switch 17 is controlled to open or close the circuit board 16, after the user stops applying force to the pressing part 22, the pressing part 22 and the pressure transmitting part 22 rebound towards the initial position, so that the next pressing operation of the user can be provided, the control of the switch 17 by the user is simple and direct, the structure of the button 20 is stable and reliable, and the reliability of the button 20 can be ensured after the user presses the button 20 for a plurality of times.

Further, as shown in fig. 22 and 23, by sealing the first sealing portion 23 and the peripheral wall of the key hole 15, the gap between the key hole 15 and the key 20 can be sealed, and the circuit board 16 and the switch 17 can be isolated from the outside, so that water or foreign matters from the outside can be effectively prevented from entering the accommodating cavity 14 through the gap between the key 20 and the key hole 15, and damage to components in the accommodating cavity 14 can be caused, and thus the reliability of the motion sensing detection device 10 can be further improved on the premise that the normal operation of the key 20 is not affected.

Therefore, through the sealing fit between the first sealing part 23 of the key 20 and the peripheral wall of the key hole 15, external water can be effectively prevented from entering the accommodating cavity 14 of the protective shell 11 through the key hole 15, so that the waterproof performance of the motion sensing detection device 10 can be improved, and the reliability of the motion sensing detection device 10 can be improved.

As shown in fig. 22 and 23, one of a sealing groove and a sealing protrusion is provided at the first sealing portion 23, the protective housing 11 is provided with the other of the sealing groove and the sealing protrusion at the key hole 15, and the sealing protrusion is fitted in the sealing groove, so that when the key 20 is arranged in the key hole 15, the sealing protrusion can extend into the sealing groove, and the sealing protrusion can be mutually abutted with the sealing groove, thus not only completing the connection fixation of the key 20 in the key hole 15, but also improving the sealing performance between the key 20 and the key hole 15, thereby effectively preventing external water from flowing into the accommodating cavity 14 from between the key 20 and the key hole 15, and further improving the structural reliability of the motion sensing detection device 10. In addition, such an abutment fit is simple and convenient, and does not require any auxiliary tools, the structure and production of the motion sensing detection device 10 can be simplified.

As shown in fig. 22 and 23, the surface of the sealing protrusion facing the accommodating cavity 14 is a first sealing inclined plane 25, the side wall of the sealing groove facing the accommodating cavity 14 is a second sealing inclined plane 26, the first sealing inclined plane 25 and the second sealing inclined plane 26 are in sealing fit, after the sealing protrusion extends into the sealing groove and is in mutual abutting fit with the sealing groove, the first sealing inclined plane 25 of the sealing protrusion and the second sealing inclined plane 26 of the sealing groove are tightly attached to each other, so that the sealing performance between the lifting key 20 and the key hole 15 can be further improved, the waterproof performance of the motion sensing detection device 10 can be further improved, and the reliability of the motion sensing detection device 10 can be further improved.

Referring to fig. 24, a light emitting element is disposed on the circuit board 16, the light emitting element corresponds to the key hole 15, the key 20 is a light transmitting element to transmit light of the light emitting element, and when the user presses the key 20 to control opening and closing of the circuit board 16, the light emitting element on the circuit board 16 can prompt the user whether the opening or closing control of the circuit board 16 is successful, and can prompt the user about the current working state of the circuit board 16, for example: when the luminous element emits light, the circuit board 16 is in a working state, when the luminous element is extinguished, the circuit board 16 is in a closing state, when a user starts to use the intelligent chest expander 100, the key 20 can be pressed, so that the key 20 triggers the switch 17 to open the circuit board 16, the luminous element emits light, the user can be prompted to successfully open the circuit board 16 by the light emission of the luminous element, when the user stops using the intelligent chest expander 100, the key 20 can be pressed, the key 20 triggers the switch 17 to close the circuit board 16, so that the luminous element is extinguished, the user can be prompted to successfully close the circuit board 16 by the extinction of the luminous element, and thus the structural reliability of the motion sensing detection device 10 can be improved.

Further, since the key 20 is a light-transmitting member, the user can directly observe the light emission and extinction of the light-emitting member through the key 20, so that the user can more intuitively observe the opening or closing of the circuit board 16, and the use experience of the user can be improved. The key 20 may be made of transparent rubber, so that not only the light transmittance of the key 20 can be ensured, but also the key 20 can be ensured to have good elasticity, thereby facilitating the pressing operation of the key 20 by the user and the resetting of the key 20.

As shown in fig. 24 and 25, the protective case 11 is provided with a plugging hole 29, and the motion sensing device 10 further includes: the plug connector 28 and the sealing plug 30, the plug connector 28 sets up in the circuit board 16, and the plug connector 28 sets up with the switch 17 interval, the plug connector 28 corresponds the inboard that sets up at spliced eye 29, sealing plug 30 openly installs in spliced eye 29 department, plug connector 28 and circuit board 16 mutually support, in order to accomplish the corresponding function of motion sensing detection device 10, sealing plug 30 can seal spliced eye 29, thereby can prevent external water from getting into through spliced eye 29 and acceping in the chamber 14, cause the damage to the part in the chamber 14, in addition, sealing plug 30 can the installation setting of switching is in spliced eye 29 department, in this way sealing plug 30 can be under the prerequisite of effective sealed spliced eye 29, the convenience of customers opens sealing plug 30, maintain the change to plug connector 28, can optimize the structural design of motion sensing detection device 10, thereby can promote user's use experience.

As shown in connection with fig. 25 and 26, the sealing plug 30 may also mainly include: the fixing part 31, the connecting part 32 and the second sealing part 33, the connecting part 32 is connected between the fixing part 31 and the second sealing part 33, the fixing part 31 is fixed in the accommodating cavity 14, the second sealing part 33 can be sealed at the plug hole 29 in an opening and closing mode, the sealing plug 30 can be installed and fixed through the installation and fixing arrangement of the fixing part 31 in the accommodating cavity 14, the plug hole 29 can be sealed through the second sealing part 33, external water and foreign matters can be effectively prevented from entering the accommodating cavity 14 from the plug hole 29, and therefore the waterproofness of the motion sensing detection device 10 can be further improved, wherein a buckle is arranged at the end part of the sealing plug 30 far away from the connecting part 32, and a user can install and detach the sealing plug 30 through the buckle, so that the second sealing part 33 can be sealed at the plug hole 29 in an opening and closing mode, and the use experience of the user can be improved. In addition, the fixing portion 31, the connecting portion 32 and the second sealing portion 33 may be integrally formed, so that not only the production process may be simplified, but also the structural strength of the sealing plug 30 may be improved.

As shown in connection with fig. 25 and 26, the sealing plug 30 may also mainly include: the spacing portion 34, spacing portion 34 sets up in the one side of second sealing portion 33 towards plug connector 28 to spacing portion 34 can set up with connecting portion 32 interval, spacing portion 34 and plug connector 28 spacing cooperation, spacing portion 34 can play spacing fixed effect to plug connector 28, thereby can make the installation setting of plug connector 28 more stable firm, can prevent that the user from exerting great force to motion sensing detection device 10 when using motion sensing detection device 10 and causing the not hard up or the whereabouts of plug connector 28, can further promote motion sensing detection device 10's structural reliability. In addition, the spacing between the limiting part 34 and the connecting part 32 can further make the gravity distribution of the sealing plug 30 more uniform, so that the stability of the sealing plug 30 can be improved.

As shown in connection with fig. 21, the protective case 11 may mainly include: the first protection casing 12 and the second protection casing 13, the first protection casing 12 and the second protection casing 13 are arranged in a aligned mode, and the first protection casing 12 and the second protection casing 13 can define the accommodating cavity 14, so that the installation and the arrangement of the protection casing 11 can be facilitated, the protection casing 11 can be conveniently opened by a user, the components in the accommodating cavity 14 can be maintained or replaced, the use experience of the user can be improved, and further, as a gap possibly exists between the first protection casing 12 and the second protection casing 13 at the connecting position, the sealing ring 35 used for sealing is arranged at the edge around the accommodating cavity 14 of the first protection casing 12 and the second protection casing 13, the edge of the accommodating cavity 14 can be effectively sealed, external water is prevented from entering the accommodating cavity 14 from the edge of the accommodating cavity 14, the components in the accommodating cavity 14 are damaged, the waterproof performance of the protection casing 11 can be further improved, and the structural reliability of the motion sensing detection device 10 can be further improved.

As shown in fig. 21 and 24, one of the first and second protective cases 12 and 13 is provided with a receiving groove around the edge of the receiving chamber 14, and the other of the first and second protective cases 12 and 13 is provided with a limiting projection 19, a seal ring 35 is provided in the receiving groove, and the limiting projection 19 can extend into the receiving groove, so that not only the seal ring 35 can be limited and fixed, but also the connection and fixation of the first and second protective cases 12 and 13 can be realized, in addition, the seal ring 35 can seal the gap between the limiting projection 19 and the limiting groove, can prevent external water and foreign matters from entering the receiving chamber 14 from the gap between the limiting projection 19 and the limiting groove, and damage the components in the receiving chamber 14, can further promote the waterproofness of the protective case 11, and can further promote the structural reliability of the motion sensing detection device 10.

Referring to fig. 21, the intelligent chest expander 100 according to the present application may mainly include: the elastic rope and the motion sensing detection device 10 can be arranged at the end part of the elastic rope, and the user can sense and detect the use condition of the elastic rope, so that the use experience of the user can be improved.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. An intelligent chest expander for body building, which is characterized by comprising:

a bungee cord having elasticity;

the motion sensing detection device is arranged at one end of the elastic rope, a battery, a circuit board and a tension sensor are arranged in the motion sensing detection device, the motion sensing detection device further comprises a protective shell, a containing cavity is formed in the protective shell, the circuit board is arranged in the containing cavity, and the battery and the tension sensor are electrically connected with the circuit board;

a fixed pulley assembly;

the regulator comprises a shell and a winding post, wherein the winding post is positioned in the shell, the other end of the elastic rope penetrates into the shell and passes out of the shell after winding the winding post, and the other end of the elastic rope bypasses the fixed pulley assembly and is fixedly connected with the shell, so that when one part of the elastic rope is fed into the shell of the regulator, the elastic rope moves relative to the winding post and the other part of the elastic rope is extruded from the shell.

2. The intelligent chest expander of claim 1, wherein the housing is a two-shot molded part and comprises: the hard framework extends towards the inside of the shell, the reinforcing ribs define a wire passing channel, and the part of the elastic rope located in the shell is located in the wire passing channel.

3. The intelligent chest expander for body building according to claim 2, wherein the wire passing channel comprises a straight line section and a widened section, the straight line section extends along a straight line, the straight line section is communicated with the widened section, the minimum width of the widened section is wider than the maximum width of the straight line section, and the winding post is arranged in the widened section.

4. The intelligent chest expander for exercise according to claim 1, wherein the housing comprises an upper shell and a lower shell, the upper shell and the lower shell being connected to define a mounting cavity,

one end of the winding post is connected with the lower shell, a positioning groove is formed in the upper shell, and the other end of the winding post is located in the positioning groove.

5. The intelligent chest expander of claim 4 wherein the lower housing has a screw post extending toward the upper housing, the upper housing and lower housing being connected by a screw, the screw being connected to the screw post;

or, the upper shell is provided with a first clamping part, the lower shell is provided with a second clamping part, the first clamping part is clamped with the second clamping part, one of the first clamping part and the second clamping part is a clamping groove, and the other is a clamping hook.

6. The intelligent chest expander of claim 4, wherein the middle portion of the upper housing is convex toward the exterior of the mounting chamber;

the middle part of the lower shell protrudes towards the outside of the mounting cavity.

7. The intelligent chest expander for body building according to claim 1, wherein the shell is provided with an outlet hole, the elastic rope is arranged in the outlet hole in a penetrating mode, a round angle is arranged at the outlet hole, and the radius of the round angle is 3-6mm.

8. The intelligent chest expander for exercise according to claim 1, wherein the regulator further comprises a reel, the elastic cord is wound in the reel, the other end of the elastic cord penetrates into the housing and is wound in the reel and then is threaded out of the housing, and the reel is adapted to control the intelligent chest expander to be stored in the reel or to release the elastic cord from the reel so as to regulate the natural length of the intelligent chest expander.

9. The intelligent chest expander of claim 1, wherein the regulator further comprises a ratchet assembly coupled to the housing, the ratchet assembly for securing the spool or releasing the spool.

10. The intelligent chest expander of claim 9, wherein the ratchet assembly comprises:

the gear is arranged on the wrapping post and coaxially rotates with the wrapping post;

a ratchet engaged with the gear;

the toggle handle is arranged outside the shell and is used for being toggled by a user, and the toggle handle is fixedly connected with the ratchet;

when the toggle handle is toggled, the toggle handle drives the ratchet to rotate, the ratchet is separated from the gear, the winding post is rotatable, and the elastic rope is movable around the winding post so as to adjust the distance between one end of the elastic rope and the regulator.

11. The intelligent chest expander of claim 10 wherein the ratchet assembly further comprises:

and the reset piece is connected with the ratchet so as to drive the ratchet to be in constant mesh with the gear.

12. The intelligent chest expander for body building according to claim 11, wherein a connecting column is connected between the ratchet and the toggle handle, a plurality of ribs are arranged on the connecting column, and the ribs are spaced along the circumferential direction of the connecting column;

The reset piece is a torsion spring, the torsion spring is sleeved on the connecting column, one end of the torsion spring is abutted to the shell, and the other end of the torsion spring is abutted to the toggle handle.

13. The intelligent chest expander of claim 10, wherein the toggle handle comprises a connecting portion and a toggle portion connected to the connecting portion, the connecting portion is connected to the ratchet, and the toggle portion is in a strip shape.

14. The intelligent chest expander of claim 10 wherein the ratchet comprises a body portion and an engagement portion connected to the body portion, the body portion being connected to the toggle handle, the engagement portion being engaged with the gear.

15. The intelligent chest expander for exercise according to claim 10, wherein the ratchet teeth and the toggle handle are integrally formed,

or the ratchet is connected with the toggle handle through a screw.

16. The intelligent chest expander for body building according to claim 1, wherein the protective housing is further provided with a key hole communicated with the accommodating cavity;

the motion sensing detection device further includes:

the switch is arranged on the circuit board and corresponds to the key hole;

The button, the button be elasticity button and set up in the button hole, the button includes: the pressing part is provided with a pressing surface, the first sealing part is arranged at the peripheral edge of the pressing part and is in sealing fit with the peripheral wall of the key hole, and the pressing part is arranged in the first sealing part and is matched with the switch through the pressing part.

17. The intelligent chest expander of claim 16, wherein the first seal portion is provided with one of a seal groove and a seal protrusion, the protective housing is provided with the other of a seal groove and a seal protrusion at the key hole, and the seal protrusion fits within the seal groove.

18. The intelligent chest expander for exercise according to claim 17, wherein a side surface of the sealing protrusion facing the accommodating cavity is a first sealing inclined surface, a side wall of the sealing groove facing the accommodating cavity is a second sealing inclined surface, and the first sealing inclined surface is in sealing fit with the second sealing inclined surface.

19. The intelligent chest expander for fitness according to claim 16, wherein a light emitting element is arranged on the circuit board, the light emitting element corresponds to the button hole, and the button is a light transmitting element so as to transmit light of the light emitting element.

20. The intelligent chest expander for exercise according to claim 16, wherein the protective housing is provided with a socket;

the motion sensing detection device further includes: the plug connector is arranged on the circuit board and is arranged with the switch at intervals, the plug connector is correspondingly arranged on the inner side of the plug hole, and the sealing plug is arranged at the plug hole in an openable and closable manner.

21. The intelligent chest expander of claim 20 wherein the sealing plug comprises: the connecting part is connected between the fixing part and the second sealing part, the fixing part is fixed in the accommodating cavity, and the second sealing part can be sealed at the plug hole in an openable and closable manner.

22. The intelligent chest expander of claim 21 wherein the sealing plug further comprises: the limiting part is arranged on one side, facing the plug connector, of the second sealing part and is arranged at intervals with the connecting part, and the limiting part is in limiting fit with the plug connector.

23. The intelligent chest expander of claim 16, wherein the protective housing comprises: the first protection shell body and the second protection shell body are arranged in a aligned mode and define the accommodating cavity, and sealing rings used for sealing are arranged at the edges of the first protection shell body and the second protection shell body around the accommodating cavity.

24. The intelligent chest expander of claim 23, wherein one of the first and second protective casings includes a receiving groove around an edge of the receiving chamber and the other includes a limiting protrusion, and the sealing ring is disposed in the receiving groove and the limiting protrusion extends into the receiving groove to limit the sealing ring.