CN212817908U

CN212817908U - Chest-developer

Info

Publication number: CN212817908U
Application number: CN202021583541.9U
Authority: CN
Inventors: 杨代梁; 吴彪; 罗家文; 何双喜; 吴松坤; 李帅
Original assignee: Shenzhen Osmartlink Technology Co Ltd
Current assignee: Shenzhen Osmartlink Technology Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-30
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a chest expander, chest expander include that pulling force rope and motion detect sensing structure. The pull rope comprises a main body section, a first end and a second end, wherein the first end and the second end are arranged at two opposite ends of the main body section; the motion detection sensing structure is arranged at the first end and/or the second end of the main body segment and is used for being in signal connection with an external terminal. Set up motion detection sensing structure on at least one in the first end of the relative both ends of pulling force rope main part section and the second end, the training data when motion detection sensing structure can detect out the exerciser and use the chest expander. The motion detection sensing structure can also upload detected training data to an external terminal connected with a signal of the motion detection sensing structure, so that the training data can be more visually presented to a body builder, the body builder can know the training condition of the body builder at any time, and a reasonable training plan can be made for body building.

Description

Chest-developer

Technical Field

The utility model relates to the technical field of fitness equipment, in particular to chest expander.

Background

Chest developer is a common fitness equipment, and is commonly used by fitness people to perform muscle strength training. However, the conventional chest expander is only a simple rubber tension rope, and the problem that a exerciser cannot reasonably plan the training intensity because the training data such as the tension and the number of times of using the chest expander each time cannot be acquired exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a chest expander aims at acquireing training data and uploads to external terminal.

In order to achieve the above object, the utility model provides a chest expander, the chest expander includes:

the pull rope comprises a main body section, a first end and a second end, wherein the first end and the second end are arranged at two opposite ends of the main body section; and

the motion detection sensing structure is arranged at the first end and/or the second end of the main body segment and is used for being in signal connection with an external terminal.

In one embodiment of the present invention, the chest expander further comprises two wrist straps, one of the wrist straps is connected to the first end of the main body segment, the other of the wrist straps is connected to the second end of the main body segment,

the motion detecting sensing structure is connected between the first end of the body segment and the wristband;

and/or the motion detection sensing arrangement is connected to the second end of the body segment and the wristband.

In an embodiment of the present invention, the motion detection sensing structure includes:

the sensing shell is fixedly connected with the second end of the main body section; and

a sensing assembly located within the sensing housing, the sensing assembly comprising: a battery, a main board, a sensor and an adapter,

the battery, the mainboard, sensor electric connection, the mainboard is used for in external terminal signal connection, the adaptor connect in the sensing shell to at least part stretches out outside the sensing shell, the adaptor is located the structure in the sensing shell with the sensor butt response, the adaptor is located the structure outside the sensing shell with the wrist strap is connected.

In an embodiment of the present invention, the sensing housing includes:

the shell comprises a shell main body, a shell body and a shell cover, wherein an accommodating cavity is formed in the shell main body; and

the partition plate is arranged in the accommodating cavity and divides the accommodating cavity into an induction cavity and a connecting cavity, the sensing assembly is arranged in the induction cavity, and the second end of the main body section is fixedly connected with the connecting cavity.

The utility model discloses an in one embodiment, the battery the mainboard the sensor is followed the extending direction interval of adaptor sets up the response intracavity, the sensor with the adaptor is located the response of structure butt in the sensing shell.

In an embodiment of the present invention, the sensor and the side portion of the adaptor butt sensing butt abut against the inner wall of the sensing cavity.

The utility model discloses an in one embodiment, the adaptor includes butt portion and switching portion, the butt portion arrange in the sensing shell, and with the sensor butt response, switching portion one end connect in butt portion, the other end with wrist strap fixed connection, the cross-section of switching portion is less than the cross-section of butt portion.

In an embodiment of the present invention, the motion detection sensing structure further includes a switch, the switch is at least partially embedded in the side of the sensing housing, and the switch is connected to the main board.

The utility model discloses an in the embodiment, the chest expander is still including setting up motion detection sensing structure with connecting piece between the wrist strap, the one end of connecting piece with adaptor fixed connection, the other end connect in the wrist strap, motion detection sensing structure passes through the connecting piece with the connection can be dismantled to the wrist strap.

In an embodiment of the present invention, the outer side surface of the wrist strap is provided with a ring buckle, one end of the connecting member is fixedly connected to the adaptor, and the other end of the connecting member is connected to the ring buckle.

The utility model discloses technical scheme sets up motion detection sensing structure through adopting to serve in the first end at the relative both ends of pulling force rope main part section and the at least one of second end, and motion detection sensing structure can detect out the training data when body-building person uses the chest expander. The motion detection sensing structure can also upload detected training data to an external terminal connected with a signal of the motion detection sensing structure, so that the training data can be more visually presented to a body builder, the body builder can know the training condition of the body builder at any time, and a reasonable training plan can be made for body building.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of a partial cross-sectional structure of an embodiment of the chest expander of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a schematic structural view of another embodiment of the chest expander of the present invention;

fig. 5 is a schematic structural view of another embodiment of the chest expander of the present invention.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 5, in an embodiment of the present invention, there is provided a chest expander 100, the chest expander 100 includes a tension rope 30 and a motion detection sensing structure 70, the motion detection sensing structure 70 is used for signal connection with an external terminal. Wherein the tensile cord 30 comprises a main body segment 31 and a first end 33 and a second end 35 disposed at two opposite ends of the main body segment 31, and the motion detection sensing structure 70 is disposed at the first end 33 and/or the second end 35 of the main body segment 31 (for convenience of description, the motion detection sensing structure 70 is disposed at the second end 35 for exemplary description, it is understood that the motion detection sensing structure 70 may also be disposed at the first end 33, or both the first end 33 and the second end 35 may be disposed at the same time).

The utility model discloses technical scheme sets up motion detection sensing structure 70 through the adoption at the second end 35 of 30 main part sections 31 of pulling force rope, and motion detection sensing structure 70 can detect out the training data that produces when the exerciser uses chest expander 100 to the exerciser knows the training condition of oneself, and can make more corresponding training plan in follow-up. Motion detection sensing structure 70 can also upload the training data that detects to the external terminal who links to each other with motion detection sensing structure 70 signal to more audio-visual the presenting for the exerciser with the training data, let the exerciser know the training condition of oneself at any time, and then can make reasonable training plan and carry out body-building. The terminal can also comprise an APP (application) and the like associated with the chest expander 100, the APP can generate a training plan suitable for the body builder according to the training situation of the body builder, and the body builder can be stimulated to exercise and build body through the modes of setting a training data ranking list or establishing a body builder communication community and the like. The training data may include the amount of tension used during exercise per use of the chest developer 100 and the number of times the chest developer 100 is stretched. The motion detection sensing structure 70 can better acquire relevant fitness training data, so that the body builders can master the motion data at any time, and the aim of more scientifically exercising the body is fulfilled.

Referring to fig. 5, when the motion detection sensor structure 70 of the chest expander 100 is disposed at the first end 33 and the second end 35 of the main body 31, the motion detection sensor structure 70 can more accurately detect the training data generated at the first end 33 and the second end 35 of the main body 31, respectively, so that the exerciser can know the training data of different parts of his body (for example, one end is sleeved on the wrist and the other end is sleeved on the ankle, so as to obtain the data of the hand and the foot at the same time), and can make a more targeted training plan subsequently. Motion detection sensing structure 70 can also upload the training data that detects to the external terminal who links to each other with motion detection sensing structure 70 signal to more audio-visual the presenting for the exerciser with the training data, let the exerciser know the training condition of oneself at any time, and then can make reasonable training plan and carry out body-building. The terminal can also be provided with an APP (application) and the like associated with the chest expander 100, the APP can generate a training plan suitable for the body builder according to the training condition of the body builder, and the exercise of the body builder can be stimulated by setting a training data ranking list or establishing a communication community of the body builder and the like. The training data may include tension values and the number of times of stretching used each time during the exercise. The motion detection sensing structure 70 can better acquire relevant fitness training data, so that the body builders can master the motion data at any time, and the aim of more scientifically exercising the body is fulfilled.

Referring to fig. 1-4, in one embodiment of the present application, the chest expander 100 further comprises two wristbands 91, one wristband 91 attached to the first end 33 of the body segment 31, the other wristband 91 attached to the second end 35 of the body segment 31, and the motion detecting sensing structure 70 attached between the wristband 91 and the second end 35 of the body segment 31. The wrist bands 91 at the two ends of the main body segment 31 can be directly sleeved on the wrist or ankle, thereby solving the problem that the grip of the chest expander 100 is separated from the control due to the lack of body strength when the existing chest expander 100 is used. Simultaneously, embolia wrist and ankle respectively with two wrist straps 91 and use, can utilize chest expander 100 that this application provided to train hand strength and shank strength simultaneously, reached better training effect.

It can be understood that, in use, the chest expander 100 provided by the present invention can use both wristbands 91 by being inserted into the wrist or ankle, or directly use both wristbands 91 by holding the wristbands 91 with the palm. The chest expander 100 can also be used by putting one wrist band 91 on the ankle or fixing the wrist band with the sole, and putting the other wrist band 91 on the wrist or holding the wrist with the palm. The chest expander 100 can be used even by inserting one wrist band 91 into a fixing rod or the like and inserting the other wrist band 91 into the wrist or ankle, or by holding the wrist or ankle with the palm. Furthermore, the utility model provides a chest expander 100 can also combine sport equipment such as prala hand-bar to use, perhaps utilizes instrument cooperations such as door anchor, outdoor rope to use, for example, through the sponge head one end with the door anchor as for outdoors, passes the lasso of door anchor with chest expander 100, utilizes the resistance between door and the sponge head to carry out the pulling force training. Here, the specific usage and usage scenario of the chest expander 100 are not further limited.

Referring to fig. 1-4, in one embodiment of the present application, a motion detection sensing arrangement 70 includes a sensing housing 71 and a sensing assembly 73. The sensing housing 71 is fixedly connected to the second end 35 of the main body section 31; the sensing assembly 73 is located within the sensing housing 71.

The sensing assembly 73 may further include a battery 731, a motherboard 733, a sensor 735, and an adapter 737. Battery 731, motherboard 733, and sensor 735 are electrically connected. The battery 731, the main board 733, and the sensor 735 are electrically connected to each other, so that the battery 731 supplies power to the main board 733 and the sensor 735 to ensure the operation of the motion detection sensing structure 70. The battery 731 can be further configured as a rechargeable battery 731, which is more energy-saving and environment-friendly.

The main board 733 is in signal connection with an external terminal, and uploads the training data detected by the sensor 735 to the external terminal, where the uploading mode may be a bluetooth transmission mode, a wireless transmission mode, or the like, and the training data detected by the sensor 735 may be uploaded to the external terminal without further limitation.

The adaptor 737 is connected to the sensing shell 71 and extends out of the sensing shell 71 at least partially, the structure of the adaptor 737 inside the sensing shell 71 is in contact sensing with the sensor 735, and the structure of the adaptor 737 outside the sensing shell 71 is connected with the wrist strap 91. Wrist strap 91 is connected to adaptor 737 one end, one end and sensor 735 butt response, make the user embolia wrist strap 91 with wrist or ankle, or when directly holding wrist strap 91 and moving, adaptor 737 can be along with wrist strap 91's action motion owing to receive exogenic action, drag the surface with sensor 735 butt response, make the resistance strain gauge that sets up on sensor 735 surface take place faint deformation, resistance strain gauge deformation back, its resistance will change, sensor 735 is through converting resistance change into the signal of telecommunication, the training data that can monitor and obtain the body-builder, and can convey the training data that obtains to external terminal with detecting. The conversion element can be a sensor shaft to detect the tension training data generated by the chest developer 100 using the motion detection sensing structure 70.

It is understood that the above-mentioned embodiments of the motion detection sensing structure are only exemplary embodiments, and it is also within the scope of the present application to use a multifunctional sensor such as a gyroscope or a balance to detect other data (for example, to detect a body posture).

Referring to fig. 1 to 4, in an embodiment of the present application, the sensing housing 71 may further include a housing main body 711 and a partition plate 713. The housing main body is internally provided with a containing cavity, the partition plate 713 is arranged in the containing cavity and divides the containing cavity into a sensing cavity and a connecting cavity, the sensing assembly 73 is arranged in the sensing cavity, and the second end 35 of the main body section 31 is fixedly connected to the connecting cavity. Placing the sensing assembly 73 and the second end 35 in the sensing cavity and the connecting cavity, respectively, can prevent the second end 35 placed in the sensing housing 71 from damaging the electronic components in the sensing assembly 73, thereby extending the service life of the motion detecting sensing structure 70.

In order to save the assembly space, referring to fig. 1 and 2, the battery 731, the main board 733, and the sensor 735 may be further disposed in the sensing cavity at intervals along the extending direction of the adaptor 737, and the sensor 735 may be sensed in contact with the structure of the adaptor 737 in the sensing housing 71. The side surfaces of the battery 731, the main plate 733, and the sensor 735 facing the inner wall of the sensing cavity can be abutted against the inner wall of the sensing cavity during assembly, so that the situation that the battery 731, the main plate 733, and the sensor 735 in the sensing cavity shake to damage electronic elements such as the battery 731, the main plate 733, and the sensor 735 when the chest expander 100 is used can be avoided.

Referring to fig. 1 to 4, the sensing housing 71 may further include a fourth opening 71a for the tensile cord 30 to pass through, and the second end 35 of the tensile cord 30 is fixed in the connecting cavity through the fourth opening 71 a. A rope end can also be arranged at the second end 35 of the tensile rope 30, and the second end 35 is arranged in the rope end. The diameter of the fourth opening 71a may be set to be smaller than the diameter of the string head, and the tensile string 30 is fixedly connected to the sensing housing 71 by placing the second end 35 with the string head in the connecting cavity. The arrangement of the rope end enables the second end 35 to be fixed in the connecting cavity more firmly and not easy to slide out of the connecting cavity. The rope end can be made of plastic or metal and the like. It will be readily appreciated that the body segment 31 of the tensile cord 30 may also be connected to the sensing housing 71 by placing the second end 35 in the connection cavity by tying a knot at the second end 35 of the body segment 31. The connection of the second end 35 to the sensing housing 71 is not further limited as long as the tensile cord 30 can be prevented from sliding out of the fourth opening 71 a.

Referring to fig. 1-4, in one embodiment of the present application, the side portion of the sensor 735 that is sensed against the interface 737 abuts against the inner wall of the sensing chamber. The side of responding to with adaptor 737 butt can guarantee with the inner wall part butt in response chamber that adaptor 737 is when dragging sensor 735, and sensor 735 can not take place to rock, not only can guarantee the accuracy of the training data that detects, can also guarantee that the electronic component among the sensing component 73 can not take place to damage.

Referring to fig. 1 to 4, in an embodiment of the present disclosure, the adaptor 737 includes an abutting portion 7371 and an adaptor portion 7373, the abutting portion 7371 is disposed in the sensor housing 71 and abuts against and senses the sensor 735, one end of the adaptor portion 7373 is connected to the abutting portion 7371, the other end of the adaptor portion 7373 is fixedly connected to the wrist strap 91, and a cross section of the adaptor portion 7373 is smaller than a cross section of the abutting portion 7371. The adaptor 737 is provided as the adaptor 7373 and the abutting portion 7371, and the abutting portion 7371 is provided to be larger than the adaptor 7373 in cross section in the abutting sensing with the sensor 735, so that the abutting sensing area of the adaptor 737 and the sensor 735 is increased, and the abutting fixing of the adaptor 737 and the sensor 735 is more firm.

Referring to fig. 1 to 4, in an embodiment of the present invention, the motion detection sensing structure 70 further includes a switch 75 at least partially embedded in a side surface of the sensing shell 71, and the switch 75 is connected to the main board 733. When the chest expander 100 is not used or the exerciser does not detect the training data, the switch 75 can be used to turn off the motion detection sensing structure 70, and when the chest expander is used, the switch 75 can be used to turn on the motion detection sensing structure 70, so as to avoid consuming the power of the battery 731 when the chest expander is not used, thereby achieving the effect of saving energy. Furthermore, turning off the motion detection sensing structure 70 is beneficial to reducing the loss of electronic components in the motion detection sensing structure 70, so as to prolong the service life of the motion detection sensing structure 70. The switch 75 may be a physical key or a touch key, and it is within the scope of the present application as long as the switch can be electrically connected to the motherboard 733.

Referring to fig. 1 to 4, in an exemplary embodiment of the present application, the chest expander 100 further comprises a connecting member 97 disposed between the motion detecting and sensing structure 70 and the wrist strap 91, one end of the connecting member 97 is fixedly connected to the adaptor 737, the other end is connected to the wrist strap 91, and the motion detecting and sensing structure 70 is detachably connected to the wrist strap 91 through the connecting member 97. The motion detection sensing structure 70 and the wrist strap 91 may further be detachably connected by a screw, a snap, or a hinge, for example, the connecting member 97 may be a climbing buckle, a screw nut, a screw buckle, or the like. Make body-building person when using chest expander 100, can will separate wrist strap 91 and motion detection sensing structure 70 through connecting piece 97 to more change wrist strap 91 into the size that is fit for oneself wrist size, more accord with body-building person's actual demand, make body-building person move more comfortablely.

In order to facilitate the connection between the connecting member 97 and the wrist strap 91, in an embodiment of the present application, a ring buckle 93 may be further disposed on an outer side of the wrist strap 91, one end of the connecting member 97 is fixedly connected to the adaptor 737, and the other end of the connecting member 97 is connected to the ring buckle 93, and the ring buckle 93 may be a D-shaped buckle or other structure facilitating the fixing of the connecting member 97.

Referring to fig. 1 and 3, when the motion detection sensing structure 70 is disposed at only one end of the main body segment (i.e., the second end 35 described above), in order to further facilitate the use of the exerciser, an adjustment structure 10 may be further disposed on the main body segment 31, and the adjustment structure 10 is used for adjusting the use length of the tensile cord 30. The adjusting structure 10 is disposed on the main body segment 31 and fixedly connected to the first end 33, and the length of the adjusting structure 10 can be adjusted by adjusting the second end 35 of the main body segment 31, so as to adjust the length of the tensile cord 30. The setting of adjusting structure 10 can let body-building person according to the body data of self or user demand, adjusts tensile rope 30 to suitable own use length, need not change chest expander 100 frequently when the body-building, has practiced thrift body-building person's time, has reduced body-building person's body-building burden, has improved body-building experience.

Referring to fig. 1 and 3, in an embodiment of the present invention, the adjusting structure 10 includes an adjusting housing 11 and an adjusting assembly 13. Wherein, the adjusting shell 11 is formed with an accommodating cavity therein, and the adjusting shell 11 is further provided with a first opening 11a and a second opening 11 b. The adjusting assembly 13 includes a supporting member 133, a clamping member 135 and an adjusting button 131, the supporting member 133 and the clamping member 135 are disposed in the accommodating cavity, the adjusting button 131 is movably connected to the adjusting housing 11, and the supporting member 133 is connected to the adjusting button 131.

An accommodating cavity is formed in the adjusting shell 11, and the adjusting shell 11 is provided with a first opening 11a and a second opening 11b which are communicated with the accommodating cavity. The first opening 11a and the second opening 11b can be penetrated by the main body section 31, so that the main body section 31 can penetrate the adjustment housing 11.

The adjusting assembly 13 includes a supporting member 133, a clamping member 135 and an adjusting button 131, the supporting member 133 and the clamping member 135 are disposed in the accommodating cavity, the adjusting button 131 is movably connected to the adjusting housing 11, and the supporting member 133 is connected to the adjusting button 131. The adjusting button 131 is movably connected to the adjusting housing 11, and when moving, the adjusting button can drive the supporting member 133 to approach or separate from the clamping member 135, and a wire passage for the tension rope 30 to pass through is further formed between the clamping member 135 and the supporting member 133.

By using the adjustment housing 11 and the adjustment assembly 13, the supporting member 133 and the clamping member 135 of the adjustment assembly 13 are used to clamp the body segment 31 to lock and release the entire tension cord 30. When not in use, the main body section 31 passing through the adjustment housing 11 between the first opening 11a and the second opening 11b is fixed by the support member 133 and the clamp member 135 in cooperation. When the body-building person needs to use the utility model provides an adjust structure 10 and adjust tensile rope 30's use length, press and adjust button 131, can make and adjust button 131 and drive support piece 133 and keep away from holder 135, let form the wire passing channel who supplies main part section 31 to pass between holder 135 and the support piece 133, at this moment, body-building person can freely adjust tensile rope 30's use length. After the adjustment is completed, the adjustment button 131 is released, so that the adjustment button 131 is reset, and the supporting member 133 is driven to approach the clamping member 135, so that the main body segment 31 is clamped and fixed by the supporting member 133 and the clamping member 135. The arrangement of the adjusting structure 10 enables the body-building people to adjust the use length of the tension rope 30 according to their own needs, which more meets the actual needs of the body-building people. In addition, the chest expander 100 does not need to be frequently replaced during body building, so that the time of the body builders is saved, the body building burden of the body builders is reduced, and the body building experience is improved.

Referring to fig. 1 and 3, in an embodiment of the present application, the clamping member 135 is provided with a clamping protrusion 1351 protruding toward the supporting member 133, the clamping protrusion 1351 and the supporting member 133 abut against opposite sides of the main body segment 31, and the clamping protrusion 1351 can cooperate with the supporting member 133 to abut and fix the main body segment 31 in the adjusting housing 11, so as to prevent the tensile cord 30 from sliding during use and affecting the use.

The surfaces of the clamping protrusion 1351 and the supporting member 133 may be further configured as a smooth curved surface, and the surfaces of the clamping protrusion 1351 and the supporting member 133 may be configured as a smooth curved surface to prevent the tensile cord 30 from being worn during the use of the adjusting structure 10.

Referring to fig. 1, a pulley assembly 50 may be further provided on the chest expander 100, the pulley 51 assembly including a pulley 51, a pulley cover 53 and a connecting shaft 55. The pulley cover 53 is connected to both sides of the pulley 51, and forms a passage for the main body segment 31 to pass through with the pulley 51, the main body segment 31 passes through the first opening 11a, and finally passes through the third opening 11c into the adjusting housing 11, and the first end 33 of the tension rope 30 is connected and fixed with the adjusting housing 11. A coupling shaft 55 is provided at the top of the pulley cover 53 for coupling the wrist band 91 and the pulley cover 53. The arrangement of the pulley 51 enables the body-building people to adjust the length of the tension rope 30 more conveniently by using the adjusting structure 10. Design of wrist strap 91 makes the body-builder use the utility model provides a pulling force is more convenient when taking exercise, better putting forth effort.

A cord lock 95 may be further provided between the assembly of the pulley 51 and the adjustment structure 10, see fig. 1 in particular. The rope buckle 95 is correspondingly provided with an opening for the tension rope 30 to pass through, the tension rope 30 penetrating through the adjusting structure 10 through the first opening 11a and the second opening 11b passes through the opening on the rope buckle 95, then passes through a channel between the pulley cover 53 and the pulley 51, then passes through another opening on the rope buckle 95, finally enters the adjusting shell 11 from the third opening 11c, and fixedly connects the main body section 31 to the adjusting shell 11. The cord fastener 95 is disposed between the pulley 51 assembly and the adjustment structure 10 to hold the tensile cord 30 together, thereby preventing the tensile cord 30 from being scattered too much and hindering the use.

Referring to fig. 1, in an embodiment of the present application, a connection member 97 is further provided between the pulley 51 assembly and the wrist strap 91, and the pulley 51 assembly may be detachably connected to the wrist strap 91 through the connection member 97. The pulley 51 assembly and the wrist strap 91 may be detachably connected by a screw connection, a snap connection, a hinge connection, etc., for example, the connecting member 97 may be a climbing buckle, a screw nut, a screw buckle, etc. The connecting piece 97 and the first setting make body-building person when using chest expander 100, can change wrist strap 91 for the wrist strap 91 that is fit for oneself wrist size, more accord with body-building person's actual demand, make body-building person's motion more comfortable.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A chest expander, said chest expander comprising:

2. The chest expander of claim 1 further comprising two wrist straps, one said wrist strap being attached to a first end of said body segment and the other said wrist strap being attached to a second end of said body segment,

3. The chest expander of claim 2 wherein said motion sensing structure comprises:

a sensing housing fixedly connected to the first end and/or the second end of the main body section; and

4. The chest expander of claim 3, wherein said sensor housing comprises:

the partition plate is arranged in the accommodating cavity and divides the accommodating cavity into an induction cavity and a connecting cavity, the sensing assembly is arranged in the induction cavity, and the first end and/or the second end of the main body section are/is fixedly connected with the connecting cavity.

5. The chest expander of claim 4 wherein said battery, said main board, said sensors are spaced apart along the extension of said adapter in said sensing chamber, said sensors sensing against structure of said adapter within said sensing housing.

6. The chest expander of claim 4 wherein said side portion of said sensor sensing abutment with said adaptor abuts an inner wall of said sensing chamber.

7. The chest expander of claim 4 wherein said adapter comprises an abutment portion and an adapter portion, said abutment portion being disposed within said sensor housing and being responsive to abutment with said sensor, said adapter portion being connected at one end to said abutment portion and at the other end fixedly connected to said wrist strap, said adapter portion having a cross-section smaller than a cross-section of said abutment portion.

8. The chest expander of any one of claims 3 through 7, wherein said motion detection sensing structure further comprises a switch at least partially embedded in a side surface of said sensing housing, said switch being connected to said main board.

9. The chest expander of any one of claims 3 to 7, further comprising a connecting member disposed between said motion detecting sensor structure and said wrist strap, said connecting member having one end fixedly connected to said adaptor and another end connected to said wrist strap, said motion detecting sensor structure being detachably connected to said wrist strap through said connecting member.

10. A chest expander as claimed in claim 9, wherein said outer side of said wrist strap is provided with a buckle, one end of said connecting member being fixedly connected to said adaptor member and the other end being connected to said buckle.