CN210583477U

CN210583477U - Body-building chest-developer

Info

Publication number: CN210583477U
Application number: CN201921206503.9U
Authority: CN
Inventors: 胡平
Original assignee: Ningbo Jielun Sports Equipment Co Ltd
Current assignee: Ningbo Jielun Sports Equipment Co Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-05-22
Anticipated expiration: 2029-07-29

Abstract

The utility model provides a body-building chest expander, it has solved technical problem such as prior art handle can't adjust length. The body-building chest expander comprises at least two elastic ropes, wherein one end of each elastic rope penetrates through a connector and then is connected with the other end of each elastic rope through a handle piece, the handle piece is any one of a fixed handle and an adjustable handle, and at least one handle piece is an adjustable handle; the fixed handle be the cylinder, adjustable handle include the sleeve and insert the post, the sleeve on be equipped with two at least locating holes, insert and be equipped with at least one elastic column that can block into the locating hole on the post. Has the advantages that: the adjustable handle is adjustable in length and detachable, so that the application range is enlarged.

Description

Body-building chest-developer

Technical Field

The utility model belongs to the technical field of body-building apparatus, especially, relate to a body-building chest expander.

Background

The body-building chest expander is a common body-building apparatus, and exercises the body by applying the acting force during pulling so as to increase the muscle strength. The existing chest developer is generally composed of a steel wire spring and a wooden handle connected to two ends of the steel wire spring. However, the handle of the chest expander cannot be adjusted in length.

Disclosure of Invention

The utility model aims at the above problem, provide a reasonable in design, simple structure, handle spare adjustable length's body-building chest expander.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the body-building chest expander comprises at least two elastic ropes, wherein one end of each elastic rope penetrates through a connector and then is connected with the other end of each elastic rope through a handle piece, the handle piece is any one of a fixed handle and an adjustable handle, and at least one handle piece is an adjustable handle; the fixed handle be the cylinder, adjustable handle include the sleeve and insert the post, the sleeve on be equipped with two at least locating holes, insert and be equipped with at least one elastic column that can block into the locating hole on the post. The adjustable handle is adjustable in length and detachable, so that the application range is enlarged.

In the body-building chest expander, at least one guide strip extending axially is arranged on the circumferential inner side of the sleeve, and guide grooves corresponding to the guide strips are arranged on the circumferential outer side of the inserting column. Through the cooperation of gib block and guide way, the dismouting of adjustable handle is more convenient.

In the body-building chest expander, the guide strip is arranged on one side opposite to the positioning hole, and the guide groove is arranged on one side opposite to the elastic column.

In foretell body-building chest expander, the connector include interconnect's base and lid, the base on be equipped with a location section of thick bamboo that the bungee quantity is unanimous, the lid on be equipped with the reference column that sets up with a location section of thick bamboo mutual correspondence, the reference column insert a location section of thick bamboo and with a location section of thick bamboo interference fit, the connector on be equipped with four at least through-holes that supply the bungee to penetrate and wear out. The base and the cover body are connected with each other through interference fit of the positioning cylinder and the positioning column, and the connection mode is simple and reliable.

In the body-building chest expander, the base is provided with the first positioning step, the cover body is provided with the second positioning step, and when the base is connected with the cover body, the first positioning step is abutted against the second positioning step. The first positioning step and the second positioning step are arranged to facilitate positioning of the base and the cover body.

In the body-building chest expander, the base is provided with the sub-holes positioned at two sides of the positioning cylinder, the cover body is provided with the arc-shaped depressions positioned at two sides of the positioning column, and the sub-holes and the arc-shaped depressions which correspond to each other form the through holes. The elastic rope penetrates into the connector from the through hole on one side of the positioning cylinder and bypasses the positioning cylinder and then penetrates out of the connector from the through hole on the other side of the positioning cylinder, so that the positioning cylinder simultaneously plays a role in connecting the base and the cover body and a role in bypassing the elastic rope, and the structure is simplified.

In the body-building chest expander, the number of the elastic ropes is four, and the elastic ropes are uniformly distributed along the circumferential direction of the connecting piece, wherein two handle pieces are fixed handles, and the other two handle pieces are adjustable handles.

Compared with the prior art, the body-building chest expander has the advantages that:

1. the length of the adjustable handle is adjustable and detachable, so that the application range is enlarged;

2. through the matching of the guide strip and the guide groove, the adjustable handle is more convenient to assemble and disassemble;

3. the base and the cover body are connected with each other through interference fit of the positioning cylinder and the positioning column, and the connection mode is simple and reliable;

4. the first positioning step and the second positioning step are arranged to facilitate positioning of the base and the cover body.

Drawings

Fig. 1 provides a schematic structural diagram of the present invention.

Fig. 2 provides an exploded view of the structure of the connector of the present invention.

Fig. 3 provides a schematic structural diagram of the adjustable handle of the present invention.

Fig. 4 provides a schematic structural view of the sleeve of the present invention.

Fig. 5 provides a schematic structural view of the plug post of the present invention.

In the figure, the elastic cord 1, the connector 2, the base 21, the positioning cylinder 22, the first positioning step 23, the cover 24, the positioning column 25, the fixed handle 3, the adjustable handle 4, the sleeve 41, the positioning hole 42, the guide strip 43, the inserting column 44, the elastic column 45, the guide groove 46, the branch hole 51 and the arc-shaped recess 52.

Detailed Description

In order to make the technical problems, technical solutions and advantages solved by the present invention more apparent, the present invention will be further explained below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the described embodiments, and on the contrary, the present invention includes all modifications, variations and equivalents falling within the scope of the appended claims.

As shown in fig. 1 and 3, the body-building chest expander comprises at least two elastic ropes 1, wherein one end of each elastic rope 1 passes through a connector 2 and then is connected with the other end of each elastic rope 1 through a handle piece, the handle piece is any one of a fixed handle 3 and an adjustable handle 4, and at least one handle piece is the adjustable handle 4; the fixed handle 3 is a cylinder, the adjustable handle 4 comprises a sleeve 41 and an insert column 44, the sleeve 41 is provided with at least two positioning holes 42, and the insert column 44 is provided with at least one elastic column 45 which can be clamped into the positioning holes 42; the elastic ropes 1 are four in number and are evenly distributed along the circumferential direction of the connecting piece, two of the handle pieces are fixed handles 3, the other two handle pieces are adjustable handles 4, the two fixed handles 3 are arranged adjacently, and the two adjustable handles 4 are arranged adjacently. The adjustable handle 4 is adjustable in length and detachable, so that the application range is enlarged.

As shown in fig. 4-5, the sleeve 41 is provided with at least one axially extending guide strip 43 on the circumferential inner side, the insertion post 44 is provided with a guide groove 46 on the circumferential outer side corresponding to the guide strip 43, the guide strip 43 is disposed on the opposite side of the positioning hole 42, and the guide groove 46 is disposed on the opposite side of the elastic post 45. Through the cooperation of gib block 43 and guide way 46, the dismouting of adjustable handle 4 is more convenient.

As shown in fig. 2, the connector 2 includes a base 21 and a cover 24 that are connected to each other, the base 21 is provided with positioning cylinders 22 whose number is the same as that of the elastic ropes 1, the cover 24 is provided with positioning columns 25 that are arranged corresponding to the positioning cylinders 22, the positioning columns 25 are inserted into the positioning cylinders 22 and are in interference fit with the positioning cylinders 22, and the connector 2 is provided with at least four through holes through which the elastic ropes 1 pass in and out; for example, when the quantity of stretch cord 1 is two, the through-hole quantity is four, and one of them stretch cord 1 penetrates behind the through-hole of number one and then wears out from No. two through-holes, and another stretch cord 1 penetrates behind the through-hole of number three and then wears out from No. four through-holes.

The base 21 is provided with a first positioning step 23, the cover body 24 is provided with a second positioning step, and when the base 21 and the cover body 24 are connected with each other, the first positioning step 23 is abutted against the second positioning step; the base 21 is provided with branch holes 51 located at two sides of the positioning cylinder 22, the cover 24 is provided with arc-shaped recesses 52 located at two sides of the positioning column 25, and the corresponding branch holes 51 and the arc-shaped recesses 52 form through holes. The base 21 and the cover body 24 are connected with each other through the interference fit of the positioning cylinder 22 and the positioning column 25, and the connection mode is simple and reliable; the first positioning step 23 and the second positioning step are arranged to facilitate the positioning of the base 21 and the cover 24; the elastic rope 1 penetrates into the connector 2 from the through hole on one side of the positioning cylinder 22 and bypasses the positioning cylinder 22, and then penetrates out of the connector 2 from the through hole on the other side of the positioning cylinder 22, therefore, the positioning cylinder 22 simultaneously plays a role in connecting the base 21 and the cover body 24 and a role in bypassing the elastic rope 1, and the structure is simplified.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of elastic cord 1, connector 2, base 21, positioning cylinder 22, first positioning step 23, cover 24, positioning column 25, fixed handle 3, adjustable handle 4, sleeve 41, positioning hole 42, guide strip 43, insertion column 44, elastic column 45, guide groove 46, branch hole 51, arc-shaped recess 52, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A body-building chest expander comprises at least two elastic ropes (1), wherein one end of each elastic rope (1) penetrates through a connector (2) and then is connected with the other end of each elastic rope (1) through a handle piece, the body-building chest expander is characterized in that the handle piece is any one of a fixed handle (3) and an adjustable handle (4), and at least one handle piece is the adjustable handle (4); fixed handle (3) be the cylinder, adjustable handle (4) include sleeve (41) and insert post (44), sleeve (41) on be equipped with two at least locating holes (42), insert post (44) on be equipped with at least one can block into elasticity post (45) of locating hole (42).

2. Exercise chest developer according to claim 1, wherein the sleeve (41) is provided with at least one axially extending guide strip (43) on the circumferential inner side and the stud (44) is provided with guide grooves (46) on the circumferential outer side corresponding to the guide strip (43).

3. Exercise chest developer according to claim 2, wherein the guide strip (43) is arranged on the opposite side of the positioning hole (42) and the guide groove (46) is arranged on the opposite side of the elastic column (45).

4. The fitness chest developer according to claim 1, wherein the connector (2) comprises a base (21) and a cover (24) which are connected with each other, the base (21) is provided with positioning cylinders (22) which are the same as the number of the elastic ropes (1), the cover (24) is provided with positioning columns (25) which are arranged corresponding to the positioning cylinders (22), the positioning columns (25) are inserted into the positioning cylinders (22) and are in interference fit with the positioning cylinders (22), and the connector (2) is provided with at least four through holes for the elastic ropes (1) to penetrate into and out of.

5. A fitness chest developer according to claim 4, wherein the base (21) is provided with a first positioning step (23) and the cover (24) is provided with a second positioning step, and the first positioning step (23) abuts against the second positioning step when the base (21) and the cover (24) are connected with each other.

6. A fitness chest developer according to claim 5, wherein the base (21) is provided with branch holes (51) at both sides of the positioning cylinder (22), the cover (24) is provided with arc-shaped recesses (52) at both sides of the positioning column (25), and the corresponding branch holes (51) and arc-shaped recesses (52) form the through holes.

7. An exercise chest developer according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein the number of the elastic cords (1) is four and the elastic cords are evenly distributed along the circumference of the connecting piece, two of the handle pieces are fixed handles (3) and the other two are adjustable handles (4).