CN212817812U

CN212817812U - Novel chest expander for physical training

Info

Publication number: CN212817812U
Application number: CN202021235873.8U
Authority: CN
Inventors: 王政; 段俊青
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-30
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a novel chest expander for physical training, the telescopic power tool comprises a sleeve, the inside body of pegging graft of sleeve, the body comprises chest expander A, chest expander B and stretch cord, the stretch cord can be dismantled and connect on chest expander A and chest expander B, chest expander A comprises upper cover and box body, the spout has been seted up to the box body inner wall side, fixed mounting has the slide bar on the spout, can dismantle on the slide bar and be connected with the couple, fixed connection has the stretch cord on the couple, chest expander A internally mounted has the stopper, the stopper is located the head end of spout, fixed mounting has the connecting rod on the slide bar, the welding has the handle on the connecting rod runs through box body and connecting rod, set up threaded hole on the box body, threaded hole perpendicular sliding connection has screw and screw to run through the upper cover. The utility model discloses an add the sleeve, avoid the stretch cord to damage self safety because of self reason bursts apart, increased the practicality of device.

Description

Novel chest expander for physical training

Technical Field

The utility model relates to a physical training field specifically is a novel chest expander is used in physical training.

Background

The chest developer is one kind of exerciser suitable for public health exercise. The advantage of using the chest developer to do exercise is that: the biceps brachii muscle is a muscle with two muscle heads, and mainly has the function of arm bending, while arm bending, another muscle-triceps brachii muscle is also used, and only when some forearm lifting motions are performed, such as high-position chest expander bending or reverse high-position chest expander toy, the brachial muscle can be fully exercised, besides, the main muscle brachioradialis muscle on the upper part of the forearm plays a lot of roles in arm bending, and the brachioradialis muscle can be strengthened by lateral bending of the chest expander.

Patent CN201711390522.7, the invention discloses a chest expander, which comprises two handles and an elastic rope, wherein two ends of the elastic rope are respectively fixed on the two handles; a fixed rod is also arranged between the two handles; a cavity is arranged in the fixed rod, and through holes communicated with the cavity are formed in both ends of the fixed rod; the telescopic assemblies are connected in the two through holes in a sliding mode and comprise a first telescopic rod and a second telescopic rod, one end of the second telescopic rod penetrates through the through holes and is located in the cavity, one end, away from the fixed rod, of the second telescopic rod is sleeved with the first telescopic rod, an accommodating cavity for accommodating the first telescopic rod is formed in the second telescopic rod, and one ends, away from the second telescopic rod, of the two first telescopic rods are connected with the two handles respectively; all be equipped with the recess on the outer wall of first telescopic link and second telescopic link, be equipped with flexible control assembly in the recess, flexible control assembly includes the pivot, is used for controlling the one-way intermittent type nature motion, limiting plate and the torsional spring that the pivot turned to. The chest expander in this scheme can effectively avoid elastic rope to contract fast and restore after tensile.

The utility model has the following disadvantages: 1. when the chest expander is exercised for a long time, the muscle adaptation back, the effect of chest expander will reduce, can't increase the effect of chest expander through adjusting the radical of stretch cord.

2. In normal exercise, the elastic rope can be burst due to over-force or the elastic rope, and the elastic rope can be bounced to the human body to cause injury.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel chest expander for physical training has solved the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel chest expander for physical training comprises a sleeve, a body is inserted in the sleeve and consists of a chest expander A, a chest expander B and an elastic rope, the elastic rope is detachably connected with the chest expander A and the chest expander B, the chest expander A consists of an upper cover and a box body, a sliding groove is arranged on the inner wall side of the box body, a sliding rod is fixedly arranged on the sliding groove, a hook is detachably connected on the sliding rod, the hook is fixedly connected with an elastic rope, the chest expander A is internally provided with a limiting block which is positioned at the head end of the sliding chute, the slide bar is fixedly provided with a connecting rod which penetrates through the box body and is welded with a handle, the handle outside cover is equipped with the protective sheath, box body head end side is seted up flutedly, set up threaded hole on the box body, the downthehole perpendicular sliding connection of threaded hole has screw and screw to run through the upper cover.

As a preferred embodiment of the present invention, the shape and size of the sleeve are matched with the shape and size of the body.

As a preferred embodiment of the present invention, the chest expander a and the chest expander B have the same structure.

As a preferred embodiment of the present invention, the upper cover of the chest expander a is provided with four groups of screws in a running-through manner, and the screw thread engraved on the outer wall of the screw matches with the screw thread engraved on the inner wall of the threaded hole.

As a preferred embodiment of the utility model, the material of handle is steel, the material of protective sheath is natural rubber.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model provides a novel chest expander for physical training, which needs to add the number of elastic ropes after muscles adapt to the chest expander, then the chest developer is pulled open by using larger force to exercise the muscles on the body, four groups of screws which are vertically and slidably connected in the threaded holes are rotated, when the screw is loosened, the upper cover is taken down from the box body, the chest expander A is detached, a new elastic rope is added at the moment, the elastic rope is fixedly connected to the hook, the new hook is hung on the slide bar, the number of the elastic ropes can be added through the physical quality of the user, after the elastic ropes are hung, the upper cover is placed on the box body, the four groups of screws are rotated into the threaded holes again to achieve a fixed state, the chest expander B is disassembled in the same step, the elastic ropes and the hooks are added, through the addition of the elastic ropes, when the exerciser is used for physical exercise, the pulling force required for pulling the chest developer is increased, so that muscles can be better exercised.

The utility model provides a novel chest expander for physical training, after adjusting the elastic rope radical, the pulling chest expander, the handle of chest expander is steel, steel material plasticity is better, intensity is high, it is corrosion-resistant, the handle outside cover is equipped with the protective sheath, the material of protective sheath is natural rubber, natural rubber increases the surface roughness of handle, increases the frictional force of handle, more is fit for pulling the chest expander, the handle welds on the connecting rod, the connecting rod is fixed on the slide bar, the slide bar is located the spout and can dismantle on the slide bar and be connected with the couple, fixedly connect with the elastic rope on the couple, when pulling the chest expander, the slide bar slides in the spout, through stopper spacing, the elastic rope atress is tensile, the pulling force is big, the tensile degree of elastic rope is big, the elastic rope is too violent with power or the elastic rope self reason can lead to bursting apart, danger is big, peg graft the sleeve on the body, when the elastic rope is broken by stretching or the elastic rope is popped out from the grooves of the chest expander A and the chest expander B, the elastic rope can be generated inside the sleeve, the human body cannot be damaged, and the practicability of the device is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a front view of the novel chest expander for physical training;

fig. 2 is a partial internal view of the novel chest expander for physical training of the utility model;

fig. 3 is the utility model provides a partial expanded view of the novel chest expander for physical training.

In the figure: 1. sleeve 2, chest expander A3, chest expander B4, elastic rope 5, hook 6, slide bar 7, chute 8, stopper 9, connecting rod 10, handle 11, body 12, protective sleeve 13, screw hole 14, groove 16, upper cover 17, box body

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: a novel chest expander for physical training comprises a sleeve 1, a body 11 is inserted in the sleeve 1, the body 11 is composed of a chest expander A2, chest expander B3 and stretch cord 4 are constituteed, stretch cord 4 can dismantle the connection on chest expander A2 and chest expander B3, chest expander A2 comprises upper cover 16 and box body 17, box body 17 inner wall side is opened and is equipped with spout 7, fixed mounting has slide bar 6 on the spout 7, can dismantle on the slide bar 6 and be connected with couple 5, fixed connection has stretch cord 4 on the couple 5, chest expander A2 internally mounted has stopper 8, stopper 8 is located the head end of spout 7, fixed mounting has connecting rod 9 on the slide bar 6, connecting rod 9 runs through box body 17 and the welding has handle 10 on connecting rod 9, handle 10 outside cover is equipped with protective sheath 12, box body 17 head end side is seted up flutedly 15, threaded hole 14 has been seted up on the box body 17, perpendicular sliding connection has screw 13 and screw 13 to run through upper cover 16 in threaded hole 14.

Wherein, the shape and the size of the sleeve 1 are matched with the shape and the size of the body 11.

In this embodiment, as shown in fig. 1, when the elastic cord is broken or the elastic cord is ejected from the grooves 15 of the chest-developer a2 or the chest-developer B3, the elastic cord may be broken inside the sleeve 1, and the human body may not be harmed.

Wherein, the chest expander A2 is consistent with the chest expander B3 in composition structure.

In this embodiment, as shown in fig. 1, 2 and 3, the elastic cord 4 needs to be stretched by applying force to both ends simultaneously, and both structures are consistent, and by rotating the screw 13, the number of the elastic cord 4 is added or reduced in the chest-developer a2 and the chest-developer B3 for exercise.

Four groups of screws 13 are arranged on an upper cover 16 of the chest expander A2 in a penetrating manner, and the threads carved on the outer wall of each screw 13 are matched with the threads carved on the inner wall of each threaded hole 14.

In this embodiment, as shown in fig. 1 and 3, four sets of screws 13 vertically slidably connected in the threaded holes 14 are rotated, after the screws 13 are loosened, the upper cover 16 is taken down from the box body 17, the chest expander a2 is detached, a new elastic cord 4 is added at this time, the elastic cord 4 is fixedly connected to the hook 5, the new hook 5 is hung on the slide bar 6, the number of the elastic cords 4 can be added through the body quality of the user, after the elastic cord 4 is hung, the upper cover 16 is placed on the box body 17, and the four sets of screws 13 are rotated into the threaded holes 14 again to achieve a fixed state.

The handle 10 is made of steel, and the protective sleeve 12 is made of natural rubber.

In this embodiment, as shown in fig. 1 and fig. 2, the handle 10 of the chest expander is made of steel, the steel material has good plasticity, high strength and corrosion resistance, the protective sleeve 12 is sleeved outside the handle 10, the protective sleeve 12 is made of natural rubber, the natural rubber increases the surface roughness of the handle 10, increases the friction force of the handle 10, and is more suitable for pulling the chest expander.

The working principle is as follows: after the muscle adapts to the chest expander, the number of the elastic ropes 4 needs to be added, then the chest expander is pulled open by using larger force to exercise the muscle on the body, four groups of screws 13 which are vertically and slidably connected in the threaded holes 14 are rotated, after the screws 13 are loosened, the upper cover 16 is taken down from the box body 17, the chest expander A2 is detached, at the moment, new elastic ropes 4 are added, the elastic ropes 4 are fixedly connected to the hooks 5, the new hooks 5 are hung on the sliding rod 6, the number of the elastic ropes 4 can be added through the physical quality of the user, after the elastic ropes 4 are hung, the upper cover 16 is placed on the box body 17, the four groups of screws 13 are rotated into the threaded holes 14 again to achieve a fixed state, then the chest expander B3 is carried out in the same step, the elastic ropes 4 and the hooks 5 are added, through the increase of the elastic ropes 4, when the physical detachment exercise is carried out, the tension which needs to pull open is increased, therefore, the muscle can be better, after 4 elastic ropes are adjusted, the pulling chest expander is pulled, the handle 10 of the chest expander is made of steel, the plasticity of a steel material is good, the strength is high, the resistance to corrosion is high, the outer side of the handle 10 is sleeved with a protective sleeve 12, the protective sleeve 12 is made of natural rubber, the surface roughness of the handle 10 is increased by the natural rubber, the friction force of the handle 10 is increased, the pulling chest expander is more suitable for pulling, the handle 10 is welded on a connecting rod 9, the connecting rod 9 is fixedly installed on a sliding rod 6, the sliding rod 6 is located in a sliding groove 7, a hook 5 is detachably connected onto the sliding rod 6, the elastic ropes 4 are fixedly connected onto the hook 5, when the chest expander is pulled, the sliding rod 6 slides in the sliding groove 7 and is limited by a limiting block 8, the elastic ropes 4 are stressed and stretched, the larger the pulling force is, the larger the stretching degree of the elastic ropes 4 is, the sleeve 1 is inserted on the body 11, and when the elastic rope 4 is broken or the elastic rope 4 pops out from the grooves 15 of the chest expander A2 and the chest expander B3, the elastic rope can be generated inside the sleeve 1, the human body cannot be damaged, and the practicability of the device is improved.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a novel chest expander for physical training, includes sleeve (1), its characterized in that: the sleeve (1) is internally spliced with a body (11), the body (11) consists of a chest expander A (2), a chest expander B (3) and an elastic rope (4), the elastic rope (4) can be detachably connected to the chest expander A (2) and the chest expander B (3), the chest expander A (2) consists of an upper cover (16) and a box body (17), a sliding groove (7) is formed in the side of the inner wall of the box body (17), a sliding rod (6) is fixedly mounted on the sliding groove (7), a hook (5) is detachably connected to the sliding rod (6), the elastic rope (4) is fixedly connected to the hook (5), a limit block (8) is mounted inside the chest expander A (2), the limit block (8) is located at the head end of the sliding groove (7), a connecting rod (9) is fixedly mounted on the sliding rod (6), the connecting rod (9) penetrates through the box body (17) and the connecting rod (9) and is welded with a handle (10), handle (10) outside cover is equipped with protective sheath (12), box body (17) head end side is seted up flutedly (15), set up threaded hole (14) on box body (17), perpendicular sliding connection has screw (13) and screw (13) to run through upper cover (16) in screw hole (14).

2. A novel chest expander for physical training as claimed in claim 1, wherein: the shape and the size of the sleeve (1) are matched with the shape and the size of the body (11).

3. A novel chest expander for physical training as claimed in claim 1, wherein: the chest expander A (2) and the chest expander B (3) are consistent in composition structure.

4. A novel chest expander for physical training as claimed in claim 1, wherein: four groups of screws (13) are arranged on an upper cover (16) of the chest expander A (2) in a penetrating mode, and threads carved on the outer wall of each screw (13) are matched with threads carved on the inner wall of each threaded hole (14).

5. A novel chest expander for physical training as claimed in claim 1, wherein: the handle (10) is made of steel, and the protective sleeve (12) is made of natural rubber.