CN216169639U - Chest expander - Google Patents

Abstract

The utility model discloses a chest expander which comprises a rotating piece, wherein a magnetic adsorption block is movably arranged on one side of the rotating piece, the rotating piece and the magnetic adsorption block are mutually adsorbed to generate resistance, and the rotating piece and the magnetic adsorption block move relatively to change the overlapping area of the rotating piece and the magnetic adsorption block, so that the resistance generated by the rotating piece and the magnetic adsorption block is adjusted. The utility model provides a chest expander, which is simple in structure and convenient for a user to operate by movably arranging a magnetic adsorption block on a bottom shell and changing the distance between an adjusting structure and a rotating piece so as to adjust the resistance between the rotating piece and the magnetic adsorption block. Change the distance between magnetic adsorption piece and the rotation piece through rotatory knob, and then convert the resistance value that the user needs to the accurate resistance value of adjusting of demand according to the user.

Description

Chest expander

Technical Field

The utility model belongs to the technical field of fitness equipment, and particularly relates to a chest expander.

Background

With the continuous improvement of living standard, people pay more and more attention to physical exercise, so more and more fitness equipment appears in our lives. Especially, home fitness equipment is gradually favored by people, and people can be trained to a certain extent in environments with small space such as home or office based on miniaturization of products and simplification of operation.

The chest developer is an appliance suitable for mass body building and exercising. The user sets different resistance values according to the training requirements of the user, and mainly trains muscles of different parts on the body. Particularly, the chest developer can be used for chest training, arm training and the like, and good body shape is shaped, so that the effect of body building in a gymnasium is achieved.

Among the prior art, generally be provided with resistance device in the chest expander, the user pulls the stay cord, and resistance device provides certain resistance for the stay cord for the in-process that the user pulled the stay cord reaches the purpose of taking exercise. However, resistance adjustment in the existing chest expander generates resistance through mutual magnetic adsorption, the adjustment of the resistance size is realized through relative rotation of the rotary disc and the magnetic field, the structure of the resistance is complex through a rotating mode, and the resistance value cannot be accurately adjusted according to the requirements of users.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of complex structure and inaccurate adjustment of a resistance device in the chest expander in the background art, the utility model provides the chest expander for solving the problem of complex structure of the resistance device.

In order to achieve the purpose, the chest expander has the following specific technical scheme:

the utility model provides a chest expander, includes and rotates the piece, rotates the mobilizable magnetic adsorption piece that is provided with in a side, rotates the piece and adsorbs the piece mutual adsorption production resistance with magnetism, rotates the piece and adsorbs the overlapping area that the piece relative movement changes rotation piece and magnetism adsorbs the piece with magnetism to adjust and rotate the size that piece and magnetism adsorbed the piece and produce the resistance.

Furthermore, be provided with on the magnetic adsorption piece and adjust the structure, adjust the structure and be used for adjusting the distance between magnetic adsorption piece and the rotation piece.

Further, adjust the structure and include the sleeve, the sleeve rotates and is connected with the screw rod, is provided with the internal thread on the sleeve inner wall, sleeve and screw rod screw-thread fit.

Furthermore, one end of the screw rod is connected with a connecting column, and an adjusting knob is arranged on the connecting column.

Furthermore, a reinforcing plate is arranged on the side wall of the sleeve, and one end of the reinforcing plate is fixedly connected with the side wall of the magnetic adsorption block.

Further, the rotating piece is a rotary disc, and the magnetic adsorption block is of a fan-shaped structure, so that the overlapping area of the rotating piece and the magnetic adsorption block is changed by moving the magnetic adsorption block.

Further, the rotating piece is arranged on the bottom shell, and the magnetic adsorption block moves in the bottom shell.

Furthermore, the magnetic adsorption block is provided with a guide block, the bottom shell is provided with a limiting groove, and the guide block is in sliding fit with the limiting groove.

Furthermore, a cover body is buckled on the bottom shell, guide blocks are arranged on two end faces of the magnetic adsorption block, limiting grooves are formed in the fixing blocks, and the fixing blocks are respectively fixed on the bottom shell and the cover body.

Further, the rotation piece sets up on line wheel, and the stay cord is around establishing on line wheel, and the stay cord drives and rotates the piece and rotate.

The chest expander provided by the utility model has the following advantages:

the utility model provides a chest expander, wherein the distance between a magnetic adsorption block and a rotating piece is changed by movably arranging the magnetic adsorption block on a bottom shell, so that the resistance between the rotating piece and the magnetic adsorption block is adjusted, and a resistance device for adjusting the resistance is simple in structure and convenient to operate by a user.

Change the distance between magnetic adsorption piece and the rotation piece through rotatory knob, and then convert the resistance value that the user needs to the accurate resistance value of adjusting of demand according to the user.

Drawings

Fig. 1 is a schematic structural view of the whole chest expander of the present invention;

fig. 2 is a side view of the chest expander of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a partial structure diagram of the chest expander of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

fig. 6 is a schematic structural view of a bottom case of the chest expander of the present invention;

fig. 7 is a schematic structural view of a cover body in the chest expander of the present invention;

fig. 8 is a schematic structural view of an adjustment structure in the chest expander of the present invention;

fig. 9 is a partial schematic view of the resistance device in the chest expander of the present invention;

fig. 10 is a schematic view showing the structure of the mounting plate and the magnet assembly in the chest expander according to the present invention;

fig. 11 is a sectional view taken along the direction C-C in fig. 10.

The notation in the figure is:

1. a platform main body; 11. a bottom case; 111. a first limit groove; 12. a cover body; 121. a wire outlet hole; 122. a second limit groove; 123. mounting a column; 124. fixing grooves; 2. a wire wheel; 21. a one-way bearing; 3. pulling a rope; 31. a handle; 4. a rotating member; 5. a resistance device; 51. a magnetic adsorption block; 511. a guide block; 512. mounting holes; 52. a reinforcing plate; 53. a sleeve; 54. an adjustment structure; 541. a screw; 542. connecting columns; 543. adjusting a knob; 55. mounting a plate; 551. mounting grooves; 56. and a magnet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the utility model. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The utility model provides a chest expander which comprises a platform main body 1, wherein a drawable pull rope 3 is arranged on the platform main body 1, and a user stands on the platform main body 1 and can achieve the effect of training strength by drawing the pull rope 3. The use environment of the platform main body 1 is not limited at all, and the chest developer can be placed anywhere with a flat surface.

As shown in fig. 1, the platform main body 1 includes a bottom shell 11, the bottom shell 11 has an opening, and a cover 12 is fastened to the opening of the bottom shell 11. Be provided with line wheel 2 on the drain pan 11, be provided with resistance means 5 on the line wheel 2, on stay cord 3 twined to line wheel 2, through pull stay cord 3, resistance means 5 produced the resistance to line wheel 2 to the user stimulates stay cord 3 to receive the resistance effect, in order to reach the purpose of training.

During specific use, place the chest expander in service environment, user's both feet trample to platform main part 1 on, require adjustment resistance device 5 according to user's training to adjust the resistance size and satisfy different user's user demand.

As shown in fig. 2 to 5, the reel 2 is provided with the rotating member 4, the platform cylinder 1 is provided with the magnetic adsorption block 51, the magnetic adsorption block 51 can adjust the contact area with the rotating member 4, and the resistance of the pull rope 3 can be adjusted by changing the contact area between the rotating member 4 and the magnetic adsorption block 51.

Further, the rotatable setting of rotating 4 is on line wheel 2, and rotating 4 generally sets up to the carousel, and the area of contact size through magnetic adsorption piece 51 and carousel changes the resistance size, and then provides the resistance source for stay cord 3.

Specifically, be provided with the mount pad on the drain pan 11, drain pan 11 rotates and is connected with line wheel 2, is provided with one-way bearing 21 in the line wheel 2, and line wheel 2 rotates with rotating 4 and connects, sets up the torsional spring in the mount pad to pulling stay cord 3, stay cord 3 rotates on line wheel 2, and the automatic of stay cord 3 is retrieved to the torsional spring. When the in-process of pulling stay cord 3, line wheel 2 drives the carousel and rotates, and magnetism adsorbs piece 51 and produces the magnetic field on rotating 4, and magnetism adsorbs piece 51 and provides the resistance for the carousel, because the carousel receives the resistance effect, the user pull stay cord 3 the in-process can experience certain resistance to the effect of the realization exercise health.

As shown in fig. 6, the magnetic absorption block 51 is provided with an adjusting structure 54, and the adjusting structure 54 is used for adjusting the distance between the magnetic absorption block 51 and the turntable so as to adjust the magnitude of the resistance. The carousel is discoid structure, is provided with the storage tank on the magnetic adsorption piece 51, and the carousel can remove in the storage tank to through the distance of adjusting the carousel in the storage tank to the resistance size that the control magnetic adsorption piece 51 produced the carousel.

As shown in fig. 9, the turntable and the magnetic adsorption block 51 move relatively, so that the overlapping area of the accommodating groove and the magnetic adsorption block 51 changes. The magnetic force generated by the magnetic adsorption block 51 and the turntable is changed by changing the overlapping area of the magnetic adsorption block 51 and the turntable.

Specifically, the turntable is made of magnetic metal, such as iron, steel, etc., and the magnet 56 is disposed on the magnetic adsorption block 51, so that the magnet 56 on the magnetic adsorption block 51 and the magnetic material interact with each other to generate a magnetic field, and the magnetic adsorption block 51 provides resistance to the turntable. The contact area between the rotary disc and the magnetic adsorption block 51 is changed, and the magnetic force generated by the interaction between the rotary disc and the magnetic adsorption block is further changed, so that the purpose of adjusting the resistance of the pull rope 3 is achieved.

Further, the shape of the magnetic attraction block 51 is set to be a sector shape, and in order to adapt to the shape of the turntable, the sector-shaped magnetic attraction block 51 and the turntable can maximize the contact area between the turntable and the magnetic attraction block 51 during the relative movement, so that the sector-shaped magnetic attraction block and the turntable interact with each other, and at a certain same position, the sector-shaped contact area and the circular contact area are the largest, and the generated magnetic force is the largest.

Of course, the shape of the magnetic adsorption block 51 may also be square, oval, diamond, etc., and the shape of the turntable may be adapted to the shape of the magnetic adsorption block 51, which is not specifically limited herein, and different shapes may be set according to different requirements.

Further, the present invention provides that the maximum resistance output of the resistance device 5 in some embodiments can be adjusted according to the requirements of the application. The physical quality is different according to individual differences of different users. The magnetic force of the magnetic adsorption block 51 can be adjusted to meet the exercise requirements of different users. Replaceable magnetic assemblies are provided to output different values of resistance depending on the training intensity of the user.

Further, the magnetic adsorption block 51 has a hollow cavity, the hollow cavity is divided into two parts by the storage groove, a first cavity and a second cavity are formed, the first cavity and the second cavity are symmetrically arranged, an opening is formed at one end of the first cavity and one end of the second cavity, the magnetic assemblies are respectively arranged in the first cavity and the second cavity, a magnetic field is formed between the first cavity and the second cavity, and the rotary disc moves in the storage groove between the first cavity and the second cavity, so that different resistance output values are changed through the size of the magnetic force.

As shown in fig. 10 and 11, the magnetic assembly includes a mounting plate 55, the shape of the mounting plate 55 is matched with the shape of the magnetic absorption block 51, and the shape of the magnetic absorption block 51 in the above embodiment is configured as a fan shape, preferably, the mounting plate 55 is configured as a fan shape, so that the mounting plate 55 is inserted into the magnetic absorption block 51 to be matched with the shape of the first chamber and the second chamber formed by the magnetic absorption block 51.

Of course, the shape of the mounting plate 55 is not limited to a fan shape, and may be set to be square, oval, diamond, etc., and the shape of the mounting plate 55 is only required to be matched with the shapes of the first chamber and the second chamber, which is not specifically limited herein, and different shapes may be set according to different requirements.

Further, a mounting groove 551 is provided on the mounting plate 55, and a magnet 56 is provided in the mounting groove 551, so that the mounting plate 55 fitted with the magnet 56 has magnetism, so that the magnetic adsorption block 51 has magnetism, and when the turntable of magnetic material moves in the accommodating groove, the magnitude of the resistance is changed.

Specifically, the number of the mounting grooves 551 may be one, two or more, and is not limited specifically herein, the number of the magnets 56 may be one, two or more, the number of the magnets 56 may be the same as or different from the number of the mounting grooves 551, and the magnets may be replaced arbitrarily according to the user's needs.

Wherein, not only the quantity of magnet 56 can increase and decrease according to user's demand, the magnetism of single magnet 56 can also be changed according to user's demand to satisfy different user's training demand.

Specifically, the mounting groove 551 is circular, the magnet 56 is circular, and when the magnet 56 is mounted in the mounting groove 551, the magnet 56 protrudes out of the mounting groove 551, so that the magnet 56 can be replaced by a user.

Further, the form of fitting the magnet 56 and the mounting groove 551 is not particularly limited herein as long as the magnet 56 can be mounted in the mounting groove 551.

After the user selects the number of the magnets 56 and the magnetic force value of the selected magnet 56 according to the requirement of the training, one end of the mounting plate 55 is inserted into the opening of the first chamber or the second chamber, the mounting plate 55 is pushed until the mounting plate 55 is completely inserted into the first chamber or the second chamber, and at this time, the assembly of the magnetic assembly and the magnetic adsorption block 51 is completed.

In order to further maximize the magnetic force that magnetic component and carousel produced, the effect of reinforcing magnetic attraction, mounting hole 512 has been seted up on the cell body lateral wall of storage tank, the position that sets up of mounting hole 512 and mounting panel 55 go up mounting groove 551 sets up the position corresponding, thereby insert mounting panel 55 in first cavity or the second cavity, the magnet 56 and the mounting hole 512 of protruding mounting panel 55 terminal surface cooperate, thereby make magnet 56 set up on the cell body lateral wall of storage tank, thereby realize the effect of mutual magnetic attraction between carousel and the magnetic adsorption piece 51.

Specifically, the upper side and the lower side of the groove body of the accommodating groove are correspondingly provided with mounting holes 512, the bottom surface of the first cavity is provided with the mounting holes 512, the top surface of the second cavity is provided with the mounting holes 512, when the mounting plate 55 is inserted into the first cavity, the mounting plate 55 on one side of the magnet 56 is inserted downwards, and the magnet 56 is matched with the mounting holes 512 arranged on the bottom surface of the first cavity. Similarly, when the mounting plate 55 is inserted into the second chamber, the mounting plate 55 on the side where the magnet 56 is disposed is inserted upward so that the magnet 56 is fitted into the mounting hole 512 provided on the top surface of the second chamber. Magnet 56 is set up simultaneously to the cell body both sides wall of the storage tank of the magnetic adsorption piece 51 that so sets up, and during carousel and storage tank relative movement, both sides all contacted with magnet 56 about the carousel for magnetic force that magnetic component produced the carousel is the biggest, and then adsorption effect is best.

Further, the contact area between the turntable and the magnetic adsorption block 51 can be changed by the relative movement of the turntable and the magnetic adsorption block, so that the adjustment of the resistance is realized. The turntable and the magnetic adsorption block 51 can be fixedly arranged by moving, and the magnetic adsorption block 51 moves relative to the turntable; the magnetic adsorption block 51 may be fixed, and the turntable and the magnetic adsorption block 51 may be moved relatively; it is also possible to provide both the turntable and the magnetic adsorption block 51 movable, and to produce a relative positional change. The turntable provided by the embodiment is rotatably arranged on the bottom shell 11, the radial direction of the turntable does not move, and the change of the output resistance value is realized by adjusting the distance between the magnetic adsorption block 51 and the turntable.

Specifically, in some embodiments of the present invention, the turntable is rotatably disposed on the bottom case 11, the turntable is not movable, and a user can adjust the distance between the turntable and the magnetic adsorption block 51 by adjusting the movement of the magnetic adsorption block 51, so as to adjust the resistance output value between the turntable and the magnetic adsorption block 51.

Further, an adjusting structure 54 is disposed on the magnetic adsorption block 51, and the magnetic adsorption block 51 is moved on the bottom case 11 by driving the adjusting structure 54.

Specifically, the adjusting structure 54 includes a sleeve 53, the sleeve 53 is rotatably connected with a screw 541, the sleeve 53 and the screw 541 are in threaded fit, the screw 541 is rotated, and the sleeve 53 is driven to move, so that the screw 541 and the sleeve 53 move relatively.

Further, one side and the sleeve 53 fixed connection of magnetic adsorption piece 51, screw 541 drive sleeve 53 remove to drive magnetic adsorption piece 51 and remove, when sleeve 53 stall, the distance between carousel and the magnetic adsorption piece 51 is fixed, thereby the resistance value that carousel and magnetic adsorption piece 51 produced is fixed, and then the carousel rotates, and the pulling stay cord 3 produces fixed resistance value.

As shown in fig. 8, a connection column 542 is disposed at one end of the screw 541, the connection column 542 is connected to the adjustment knob 543, and the screw 541 is driven to rotate by rotating the adjustment knob 543, so as to move the sleeve 53, and further adjust the magnetic absorption block 51 to move on the bottom case 11.

Specifically, adjustment structure 54 is installed on drain pan 11, has seted up the through-hole on the lateral wall of drain pan 11, and spliced pole 542 runs through the through-hole setting, and one side of spliced pole 542 sets up adjust knob 543, and adjust knob 543 sets up on the outer wall of drain pan 11 to the relative rotation of user rotation adjust knob 543, drive screw 541 and sleeve 53 realizes the removal between magnetic adsorption piece 51 and the carousel.

Further, a reinforcing plate 52 is disposed on a side wall of the sleeve 53, and a lightening hole is disposed on the reinforcing plate 52, so as to increase the strength of the sleeve 53 and prevent the sleeve 53 from being broken during the rotation of the screw 541.

As shown in fig. 6 and 7, the bottom case 11 and the cover 12 are respectively provided with a limiting groove, specifically, the bottom case 11 is provided with a first limiting groove 111, the cover 12 is provided with a second limiting groove 122, the first limiting groove 111 and the second limiting groove 122 are used for limiting the radial movement of the magnetic adsorption block 51, in a specific use process, the upper end surface and the lower end surface of the magnetic adsorption block 51 are respectively provided with a guide block 511, and the guide block 511 is slidably connected with the limiting groove, so that the guide block 511 moves in the first limiting groove 111 and the second limiting groove 122.

Specifically, the first limiting groove 111 and the second limiting groove 122 are disposed on the fixing block, the fixing blocks are disposed on the bottom case 11 and the cover 12, and the limiting grooves are disposed on the fixing blocks along the radial direction. The number of the limiting grooves is matched with that of the guide blocks 511, specifically, the number of the guide blocks 511 can be set to be one, two or more, the guide blocks 511 are long blocks, and the guide blocks 511 are arranged at equal intervals, so that the movement of the magnetic adsorption block 51 is better limited.

Further, the rotating shaft on the rotating disc protrudes out of the rotating disc, and when the cover 12 is fastened to the bottom case 11, the fixing groove 124 is formed in the cover 12, and the rotating shaft is arranged on the fixing groove 124 to better fix the cover 12 and the bottom case 11.

Further, a plurality of mounting posts 123 are arranged on the cover 12, a plurality of mounting holes 512 are arranged at positions corresponding to the mounting posts 123 on the bottom case 11, and the bottom case 11 and the cover 12 are fixedly connected through screws, so that the whole assembly of the chest expander is realized.

The pull rope 3 provided by the utility model is provided with the handle 31, so that a user can pull the pull rope 3 through the handle 31 in the using process, and more conveniently pull the pull rope 3 to exercise.

The chest expander that embodiment provided above, through mobilizable setting magnetic adsorption piece on the drain pan, change the magnetic adsorption piece and rotate the distance between the piece to adjust the size of rotating the piece and the resistance between the magnetic adsorption piece, simple structure, convenient to use person operates. Change the distance between magnetic adsorption piece and the rotation piece through rotatory knob, and then convert the resistance value that the user needs to the accurate resistance value of adjusting of demand according to the user.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The utility model provides a chest expander, its characterized in that, including rotating the piece, rotates the mobilizable magnetic adsorption piece that is provided with in piece one side, rotates the piece and adsorbs the piece mutual absorption and produce the resistance with the magnetism, rotates the piece and adsorbs the relative movement of piece with the magnetism and changes the overlapping area who rotates piece and magnetic adsorption piece to adjust and rotate the size that piece and magnetic adsorption piece produced the resistance.

2. The chest expander according to claim 1, wherein the magnetic absorption block is provided with an adjusting structure for adjusting a distance between the magnetic absorption block and the rotation member.

3. A chest expander as claimed in claim 2 wherein the adjustment structure comprises a sleeve to which a threaded rod is rotatably connected, the sleeve having internal threads on an inner wall thereof, the sleeve and threaded rod being threadedly engaged.

4. A chest expander as claimed in claim 3 wherein the threaded rod is connected at one end to a connecting post, the connecting post being provided with an adjustment knob.

5. A chest expander as claimed in claim 3, wherein a reinforcing plate is provided on the side wall of the sleeve, and one end of the reinforcing plate is fixedly connected to the side wall of the magnetic adsorption block.

6. The chest expander according to claim 1, wherein the rotary member is a rotary plate and the magnetic adsorption blocks are of a fan-shaped structure, so that moving the magnetic adsorption blocks changes an overlapping area of the rotary member and the magnetic adsorption blocks.

7. The chest expander according to claim 1, wherein the rotary member is provided on the bottom case, and the magnetic attraction block moves in the bottom case.

8. The chest expander as claimed in claim 7, wherein the magnetic absorption block is provided with a guide block, the bottom casing is provided with a limit groove, and the guide block and the limit groove are in sliding fit.

9. The chest expander as claimed in claim 8, wherein the bottom casing is fastened with the cover, the magnetic absorption block is provided with guide blocks at both end surfaces thereof, the limit grooves are provided on the fixing blocks, and the fixing blocks are respectively fixed on the bottom casing and the cover.

10. The chest expander of claim 1 wherein the rotatable member is disposed on a pulley, and the pull cord is wound around the pulley, the pull cord rotating the rotatable member.

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