CN214512465U

CN214512465U - Adjustable chest developer

Info

Publication number: CN214512465U
Application number: CN202120512144.0U
Authority: CN
Inventors: 王长冲
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-10-29
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses an adjustable chest expander, which comprises a fixing device which can be connected with the outside, a shell which is connected with the fixing device, a stay cord mechanism which is arranged in the shell and a handheld part which extends out of the shell, wherein the stay cord mechanism at least comprises a first coil spring unit, a second coil spring unit and a sleeve which is used for winding the stay cord, and the center of the sleeve extends to form a left lengthening section; the second coil spring unit comprises a second coil spring sleeved on the left lengthened section and one end of the second coil spring is connected with the left lengthened section, and a first locking mechanism connected with the other end of the second coil spring; when the first locking mechanism locks or unlocks the other end of the second coil spring, the first coil spring and the second coil spring of the first coil spring unit can be used in combination to adjust the amount of force required to pull the cord. The utility model discloses a design of a plurality of wind spring units, the user can superpose as required and use different wind spring units, and a plurality of pulling forces are adjustable in size, and same chest expander can adapt to different users, uses more in a flexible way, convenient, and pulling force is adjusted easy operation.

Description

Adjustable chest developer

Technical Field

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

Background

Along with the attention of people to the body, more and more people use simple apparatus to exercise the body at home, and the chest expander is used flexibly and receives extensive attention because of small floor area. However, the currently marketed chest developer has a single function, cannot realize adjustment of different pulling forces, and cannot adapt to different users.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an adjustable chest expander which can adjust the tension and is convenient to adjust and suitable for different people.

The utility model provides a technical scheme that its technical problem adopted is: an adjustable chest expander comprises a fixing device which can be connected with the outside, a shell which is connected with the fixing device, a rope pulling mechanism which is arranged in the shell, and a handheld part which extends out of the shell, wherein the rope pulling mechanism at least comprises a first coil spring unit, a second coil spring unit and a sleeve which is used for winding a pulling rope, and the center of the sleeve extends to form a left lengthened section; the second coil spring unit comprises a second coil spring sleeved on the left lengthened section and one end of the second coil spring is connected with the left lengthened section, and a first locking mechanism connected with the other end of the second coil spring; when the first locking mechanism locks or unlocks the other end of the second coil spring, the first coil spring and the second coil spring of the first coil spring unit may be used in combination to adjust the amount of force required to pull the cord.

The utility model discloses utilize the stack of first coil spring unit and second coil spring unit to use, can carry out tensile regulation according to the user demand of difference, it is nimble convenient to use, and it is convenient to adjust easy operation, and the structural layout of first coil spring unit and second coil spring unit is reasonable moreover, and is whole small.

Furthermore, the rope pulling mechanism further comprises a third coil spring unit, the center of the sleeve extends towards two sides to form a right lengthened section and a left lengthened section respectively, and the third coil spring unit comprises a third coil spring and a second locking mechanism, wherein the third coil spring is sleeved on the right lengthened section, one end of the third coil spring is connected with the third coil spring, and the second locking mechanism is connected with the other end of the third coil spring; when the second locking mechanism locks or unlocks the other end of the third coil spring, the first coil spring, the second coil spring, and the third coil spring can be used in combination to adjust the amount of force required to pull the cord. Through first coil spring unit exclusive use, first coil spring unit stack second coil spring unit uses, and first coil spring unit stack third coil spring unit uses, perhaps first coil spring unit stack second coil spring unit and third coil spring unit use, can reach multiple use scene, use different user demands, it is nimble convenient to use.

Furthermore, the first locking mechanism comprises a first cover body sleeved outside the second coil spring and connected with the second coil spring, first clamping teeth arranged at intervals along the circumferential direction of the first cover body, and a first lock button unit matched with the first clamping teeth, and the first lock button unit is rotated by applying external force and can be switched between a locking state and an unlocking state with the first clamping teeth. The first locking mechanism is simple in structural design and convenient to operate.

Furthermore, the first lock button unit comprises lock teeth which can be clamped between adjacent first clamp teeth, a first body which is rotationally connected with the shell, and a first torsion spring which is connected with the first body, wherein a first knob is arranged on the first body, and the first knob extends out of the shell. The first knob extends out of the shell, so that a user can conveniently adjust and operate the first knob.

Furthermore, the first torsion spring is in a shape of a Chinese character 'ji', and the other end of the first torsion spring is rotationally connected with the shell; a first stroke groove for the first knob to extend out is formed in the shell, one end of the first torsion spring is installed in the position right opposite to the middle of the first stroke groove, and the other end of the first torsion spring is concentrically connected with the first knob. The arrangement of the first stroke groove limits the moving distance of the first knob, the structural design of the first torsion spring enables operation to be convenient and labor-saving, and switching between the two positions is simple and effective.

Further, be equipped with the boss on the first body, be connected with the locating part on the casing, when exerting external force on first knob and rotate first body, the boss is restricted between casing and locating part, and supports the locating part and rotate.

Furthermore, the first body is provided with an identification part for judging whether the lock teeth are clamped into the adjacent first clamping teeth. The setting of sign portion facilitates the user directly perceived judgement and adjusts the quantity that increases or reduce the coil spring, convenient to use.

Furthermore, cracking parts for clamping the second coil spring and the third coil spring are respectively arranged on the left elongated section and the right elongated section.

Further, be equipped with the mounting bracket in the casing, it forms the hollow cylinder that is used for installing the sleeve to reach the projection that is used for rotating to connect the stay cord guide, first coil spring is located inside the hollow cylinder.

Further, the fixing device is of a sucker structure and is connected with the shell in a rotating mode.

The utility model has the advantages that: through the design of a plurality of spring units, the user can superpose different spring units of use as required, and a plurality of pulling forces size is adjustable, and same chest expander can adapt to different users, uses more nimble, convenient, and pulling force is adjusted easy operation.

Drawings

Fig. 1 is a perspective view of the present invention (with the fixing device removed).

Fig. 2 is a perspective view of the present invention (with the fixture and a portion of the housing removed).

Fig. 3 is a perspective view of the present invention (excluding the cord pulling mechanism and the handle).

Fig. 4 is a first perspective view of the present invention (with the cord mechanism, handle and portions of the housing removed).

Fig. 5 is a second perspective view of the present invention (excluding the cord mechanism, the handle and a portion of the housing).

Fig. 6 is a partial schematic view of the first, second and third coil spring units according to the present invention.

Fig. 7 is a schematic view of the structure of the housing and the first lock button unit of the present invention.

Fig. 8 is a schematic structural diagram of the first lock button unit of the present invention.

Fig. 9 is an exploded schematic view of the present invention.

Fig. 10 is a schematic structural view of the fixing device, the mounting frame and the mounting sleeve according to the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution 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 shall belong to the protection scope of the present invention.

As shown in fig. 1 to 10, an adjustable chest expander comprises a fixing device 1 which can be connected with the outside, a housing 2 connected with the fixing device 1, a rope pulling mechanism 3 arranged in the housing 2, and a hand-held part 4 extending from the housing 2. In the present embodiment, the fixing device 1 is a suction cup structure, which is rotatably connected to the housing 2.

The rope mechanism 3 includes at least a first coil spring unit 5, a second coil spring unit 6, a third coil spring unit 8, and a sleeve 7 for winding the rope 71. The center of the sleeve 7 extends towards two sides to form a left extension section 72 and a right extension section 73 respectively, and the second coil spring unit 6 comprises a second coil spring 61 which is sleeved on the left extension section 72 and is connected with one end thereof, and a first locking mechanism 62 which is connected with the other end of the second coil spring 61. The third coil spring unit 8 includes a third coil spring 81 fitted over the right elongated section 73 and having one end connected thereto, and a second locking mechanism 82 connected to the other end of the third coil spring 81.

When the first latch mechanism 62 unlocks the other end of the second coil spring 61, an external force is applied to the handle 4 to pull the cord mechanism 3, the sleeve 7 rotates, and only the first coil spring 51 is pulled.

When the first locking mechanism 62 locks the other end of the second coil spring 61, an external force is applied to the handle 4 to pull the cord mechanism 3, the sleeve 7 rotates, the first coil spring 51 and the second coil spring 61 are pulled, and the tension superposition increases.

When the second locking mechanism 82 locks the other end of the third coil spring 81 at the same time as the first locking mechanism 62 locks the second coil spring 61, an external force is applied to the hand-held portion 4 to pull the cord mechanism 3, the sleeve 7 rotates, and the first coil spring 51, the second coil spring 61 and the third coil spring 81 are pulled at the same time, with the three pulling forces superimposed.

Thereby the user can carry out the flexibility according to self needs and adjust.

Specifically, as shown in fig. 9 and 10, a mounting bracket 22 is provided in the housing 2, the mounting bracket 22 is annular, a hollow cylinder 221 for mounting the sleeve 7 and a boss 222 for rotatably connecting the cord guide 711 are formed on one side surface of the mounting bracket 22, the first coil spring 51 is disposed inside the hollow cylinder 221, one end of the first coil spring is clamped in a notch 223 of an inner ring of the hollow cylinder 221, and the other end of the first coil spring is clamped in the center of the sleeve 7.

The left extension section 72 and the right extension section 73 of the sleeve 7 are respectively provided with a split part, wherein the first split part 721 on the left extension section 72 is used for clamping and fixing one end of the second coil spring 61, and the second split part 731 on the right extension section 73 is used for clamping and fixing one end of the third coil spring 81.

The first locking mechanism 62 comprises a first cover body 63 which is sleeved outside the second coil spring 61 and connected with one end of the second coil spring 61, a first blocking plate 631 which can be spliced with the first cover body 63, a circle of first latch teeth 64 which are arranged at intervals along the circumferential direction of the first cover body 63, and a first locking button unit 65 which can be matched with the first latch teeth 64.

The first lock button unit 65 includes lock teeth 651 that can be caught between adjacent first catching teeth 64, a first body 652 rotatably coupled to the housing 2, and a first torsion spring 653 coupled to the first body 652, the first torsion spring 653 having a zigzag shape with one end fitted over a cylinder of the first body 652 and the other end rotatably coupled to the housing 2. The first body 652 is further provided with a first knob 654, and after assembly, the first knob 654 extends out of the housing 2, which is convenient for operation.

More specifically, the housing 2 is formed with a first stroke groove 23 for defining a moving distance of the first knob 654, and one end of the first torsion spring 653 is installed at a position opposite to the middle of the first stroke groove 23, and the other end thereof is concentrically installed and connected to the first knob 654.

In addition, in order to facilitate intuitive judgment of whether to superimpose the tension of the second coil spring 61 or to release the tension of the second coil spring 61 by using the tension of the first coil spring 51, the first body 652 may be provided with a mark 656 for judging whether the lock teeth 651 are engaged with the adjacent first teeth, and the mark 656 may include a plus sign "+" and a minus sign "-".

The first body 652 is provided with a boss 655, the limiting member 21 is connected to the housing 2, and the boss 655 is limited between the housing 2 and the limiting member 21, that is, when the first body 652 rotates, the limiting member 21 abuts against the boss 655.

The first lock button unit 65 is rotated by applying an external force, more specifically, the first knob 654 is rotated, the first body 652 is rotated by the first torsion spring 653, the lock tooth 651 is driven to move, and due to the shape design of the first torsion spring 653, the lock tooth 651 can be disengaged from the first latch tooth 64, or can be clamped between two adjacent first latch teeth 64, that is, the first lock button unit 65 is switched between the locked state and the unlocked state with the first latch tooth 64.

The third coil spring unit 8 has the same structure as the second coil spring unit 6, is disposed on the other side of the mounting bracket 22, and includes a third coil spring 81 sleeved on the right elongated section 73 and having one end connected thereto, and a second locking mechanism 82 connected to the other end of the third coil spring 81. The second locking mechanism 82 comprises a second cover body 83 which is sleeved outside the third coil spring 81 and connected with one end of the third coil spring 81, a second blocking plate 831 which can be spliced with the second cover body 83, a circle of second latch teeth 84 which are arranged at intervals along the circumferential direction of the second cover body 83, and a second locking button unit 85 which can be matched with the second latch teeth 84. The detailed structure is not described again.

When the utility model is used, if the user with smaller strength only needs to use the first coil spring 51 to do exercise, the first lock button unit 65 and the second lock button unit 85 are rotated to minus sign "-", and the lock tooth 651 is separated from the first latch tooth 64; when the second coil spring 61 needs to be superposed for use, the first lock unit 65 is rotated to plus "+", at this time, the lock teeth 651 are clamped between the first latch teeth 64, the first cover 63 cannot rotate, and one end of the second coil spring 61 is limited by the first cover 63, so that the first coil spring 51 and the second coil spring 61 are superposed for use; when the third coil spring 81 is also required to be used in superposition, the second lock button unit 85 is rotated to plus "+", and the first coil spring 51, the second coil spring 61, and the third coil spring 81 are used in superposition. Of course, the second coil spring 61 and the third coil spring 81 can be set to have different pulling forces, and only the first coil spring 51 and the third coil spring 81 are superposed for use, so that the use is more flexible and diversified.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims

1. The utility model provides a chest expander with adjustable, includes fixing device (1) that can link to each other with the external world, casing (2) that link to each other with fixing device (1), locates stay cord mechanism (3) in casing (2), and handheld portion (4) that stretch out from casing (2), its characterized in that: the pull rope mechanism (3) at least comprises a first coil spring unit (5), a second coil spring unit (6) and a sleeve (7) for winding a pull rope (71), wherein the center of the sleeve (7) extends to form a left lengthened section (72); the second coil spring unit (6) comprises a second coil spring (61) which is sleeved on the left lengthened section (72) and one end of which is connected with the left lengthened section, and a first locking mechanism (62) which is connected with the other end of the second coil spring (61); when the first locking mechanism (62) locks or unlocks the other end of the second coil spring (61), the first coil spring (51) and the second coil spring (61) of the first coil spring unit (5) can be used in combination to adjust the force required to pull the pulling rope (71).

2. The adjustable chest expander as claimed in claim 1, wherein: the rope pulling mechanism (3) further comprises a third coil spring unit (8), the center of the sleeve (7) extends towards two sides to form a right lengthened section (73) and a left lengthened section (72), and the third coil spring unit (8) comprises a third coil spring (81) and a second locking mechanism (82), wherein one end of the third coil spring (81) is connected with the third coil spring (81) in a sleeved mode on the right lengthened section (73), and the other end of the second locking mechanism is connected with the other end of the third coil spring (81); when the second locking mechanism (82) locks or unlocks the other end of the third coil spring (81), the first coil spring (51), the second coil spring (61), and the third coil spring (81) can be used in combination to adjust the force required to pull the pull rope (71).

3. The adjustable chest expander as claimed in claim 1, wherein: the first locking mechanism (62) comprises a first cover body (63) sleeved outside the second coil spring (61) and connected with the second coil spring (61), first clamping teeth (64) distributed at intervals along the circumferential direction of the first cover body (63), and a first locking button unit (65) matched with the first clamping teeth (64), and the first locking button unit (65) can be rotated by applying external force and can be switched between a locking state and an unlocking state of the first clamping teeth (64).

4. The adjustable chest expander of claim 3, wherein: the first lock button unit (65) comprises lock teeth (651) which can be clamped between adjacent first clamp teeth (64), a first body (652) which is rotatably connected with the shell (2), and a first torsion spring (653) which is connected with the first body (652), wherein a first knob (654) is arranged on the first body (652), and the first knob (654) extends out of the shell (2).

5. The adjustable chest expander of claim 4, wherein: the first torsion spring (653) is in a shape of a Chinese character 'ji', and the other end of the first torsion spring is rotationally connected with the shell (2); a first stroke groove (23) for the first knob (654) to extend out is formed on the shell (2), one end of the first torsion spring (653) is installed at the position right opposite to the middle of the first stroke groove (23), and the other end of the first torsion spring is concentrically connected with the first knob (654).

6. The adjustable chest expander of claim 4, wherein: the first body (652) is provided with a boss (655), the shell (2) is connected with the limiting piece (21), and when the first body (652) is rotated by applying external force on the first knob (654), the boss (655) is limited between the shell (2) and the limiting piece (21) and rotates against the limiting piece (21).

7. The adjustable chest expander of claim 4, wherein: the first body (652) is provided with an identification part (656) for judging whether the lock tooth (651) is clamped into the adjacent first latch.

8. The adjustable chest expander as claimed in claim 2, wherein: and the left elongated section (72) and the right elongated section (73) are respectively provided with a cracking part (721, 731) for clamping the second coil spring (61) and the third coil spring (81).

9. The adjustable chest expander as claimed in claim 1, wherein: the casing (2) is internally provided with a mounting frame (22) which forms a hollow cylinder (221) used for mounting the sleeve (7) and a convex column (222) used for rotatably connecting the pull rope guide (711), and the first coil spring (51) is arranged inside the hollow cylinder (221).

10. The adjustable chest expander as claimed in claim 1, wherein: the fixing device (1) is of a sucker structure and is connected with the shell (2) in a rotating mode.