CN212327294U

CN212327294U - Chest expander extension spring for sports equipment

Info

Publication number: CN212327294U
Application number: CN202020985616.XU
Authority: CN
Inventors: 来庆伟
Original assignee: Tianjin Jinghai Haoda Spring Manufacturing Co ltd
Current assignee: Tianjin Jinghai Haoda Spring Manufacturing Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-01-12
Anticipated expiration: 2030-06-03

Abstract

The utility model relates to a chest expander technical field just discloses a chest expander extension spring for sport equipment, including extension spring, extension spring's both ends fixedly connected with transition piece, the first lantern ring of one side fixedly connected with of transition piece. The utility model discloses a threaded connection between screw cap and the external screw thread and the position restriction of position sleeve, make extension spring, the first lantern ring, the transition piece, extension spring mechanism and support frame fixed mounting are constituteed to the connecting rod together, when follow-up user need increase and decrease extension spring, only need twist screw cap and external screw thread to rotate and break away from, alright make extension spring mechanism follow the inside dismantlement of support frame, realize adjusting device power intensity purpose, easy operation is convenient, the pull out ware that the extension spring is detachable relatively has, practicality and flexibility promote by a wide margin, and cup joint for utilizing the ring structure activity and realize dismantling the function pull out ware, the joint strength between the device movable structure also obtains promoting.

Description

Chest expander extension spring for sports equipment

Technical Field

The utility model relates to a chest expander technical field specifically is a chest expander extension spring for sport equipment.

Background

The chest developer is an apparatus suitable for public body building and exercising, and the chest developer has the advantages of: the biceps brachii muscle is a muscle with two muscle heads, and mainly has the function of arm bending, and when arm bending is performed, the triceps brachii muscle is also used, and only when some forearm lifting motions are performed, such as high-position chest developer bending or reverse high-position chest developer toy, the brachial muscle can be fully exercised, in addition, the main muscle brachial flexor on the upper part of the forearm plays a lot of roles in arm bending, and the brachial flexor can be strengthened by the lateral bending of the chest developer.

But the chest expander that now commonly used still goes out to have some problem pieces to solve in the in-service use, mainly be that extension spring and the structure of gripping are connected and generally adopt non-detachable mounting structure in the current chest expander, this kind of mode is though guarantee chest expander active structure connects the stability, but lose the function that tensile strength adjusted, the practicality receives certain restriction, and also some utilize the annular structure activity to cup joint the realization and can dismantle the function now, but the mode activity that the annular structure activity cup jointed is too big, there is the potential safety hazard that fatigue deformation breaks away from, to above-mentioned problem, we provide a chest expander extension spring for sports equipment.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a chest expander extension spring for sports equipment has solved the problem that above-mentioned background art provided.

The utility model provides a following technical scheme: the utility model provides a chest expander extension spring for sport equipment, includes extension spring, extension spring's both ends fixedly connected with transition piece, the first lantern ring of one side fixedly connected with of transition piece, the second lantern ring has been cup jointed in the inboard activity of first lantern ring, one side fixedly connected with connecting rod of the second lantern ring, the support frame has been cup jointed in the surface activity at connecting rod middle part, the fixed cover in one side of support frame inside has been cup jointed and has been held the pole, the one end activity of connecting rod is cup jointed in the inside of support frame and the surface has seted up the external screw thread, the surperficial threaded connection of external screw thread has the thread lid.

And carefully selecting, wherein the side surface of one side of the support frame is movably connected with a positioning sleeve, and the positioning sleeve is fixedly sleeved on the surface of the other end of the connecting rod.

Carefully selecting, one side of the threaded cover is provided with an isolation belt, and the isolation belt is fixedly sleeved inside the support frame.

Carefully, the inside activity of connecting rod has cup jointed the anticreep pole, and the top threaded connection of anticreep pole at the top of support frame one side, the bottom activity of anticreep pole cup joints the bottom in support frame one side.

Carefully selecting, the fixed surface of holding the pole has cup jointed the cushion collar, and the surface of cushion collar has seted up anti-skidding line.

Preferably, the diameter of the interior of the second collar is greater than the wall thickness of the first collar, and the diameter of the interior of the first collar is greater than the diameter of the interior of the second collar.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model discloses a threaded connection between screw cap and the external screw thread and the position restriction of position sleeve, make extension spring, the first lantern ring, the transition piece, extension spring mechanism and support frame fixed mounting are constituteed to the connecting rod together, it is follow-up when user's needs increase and decrease extension spring, only need twist screw cap and external screw thread to rotate and break away from, alright make extension spring mechanism follow the inside dismantlement of support frame, realize the purpose of adjusting device strength of force, easy operation is convenient, relatively current extension spring detachable chest expander that can not be dismantled, practicality and flexibility all promote by a wide margin, and cup joint for utilizing the ring structure activity and realize dismantling the function chest expander, the joint strength between the device movable structure also obtains promoting.

2. The utility model discloses an anticreep pole cup joints with the connecting rod activity and again with the inboard threaded connection of support frame, realizes the anticreep protection to the connecting rod, avoids screw cap and external screw thread to break away from because fatigue wear, leads to the phenomenon of connecting rod and the separation of the first lantern ring of drive and support frame, further improves the security of device.

Drawings

FIG. 1 is a schematic cross-sectional view of the structural support frame of the present invention;

FIG. 2 is an enlarged schematic view of the point A in the structure of FIG. 1 of the present invention;

fig. 3 is a schematic perspective view of the structural extension spring of the present invention;

fig. 4 is a perspective view of the structural connecting rod of the present invention.

In the figure: 1. an extension spring; 2. a transition block; 3. a first collar; 4. a second collar; 5. a connecting rod; 6. a support frame; 7. a holding rod; 8. a threaded cap; 9. a positioning sleeve; 10. an anti-drop rod; 11. an external thread; 12. an isolation zone; 13. a buffer sleeve.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-4, a tension spring of a tension device for sports equipment comprises an extension spring 1, two ends of the extension spring 1 are fixedly connected with a transition block 2, one side of the transition block 2 is fixedly connected with a first collar 3, the inner side of the first collar 3 is movably sleeved with a second collar 4, the diameter value of the inner part of the second collar 4 is larger than the wall thickness value of the first collar 3, the diameter value of the inner part of the first collar 3 is larger than the diameter value of the inner part of the second collar 4, the first collar 3 and the second collar 4 are connected to facilitate the subsequent tension angle adjustment of the extension spring 1, the use comfort of the device is ensured, one side of the second collar 4 is fixedly connected with a connecting rod 5, the inner part of the connecting rod 5 is movably sleeved with an anti-falling rod 10, the top end of the anti-falling rod 10 is in threaded connection with the top of one side of a support frame 6, the bottom, the anti-falling protection of the connecting rod 5 is realized by movably sleeving the anti-falling rod 10 with the connecting rod 5 and then connecting the anti-falling rod with the inner side thread of the support frame 6, the phenomenon that the connecting rod 5 is separated from the support frame 6 due to fatigue wear caused by the separation of the threaded cover 8 and the external thread 11 is avoided, the safety of the device is further improved, the support frame 6 is movably sleeved on the surface of the middle part of the connecting rod 5, the positioning sleeve 9 is movably connected to the side surface of one side of the support frame 6, the positioning sleeve 9 is fixedly sleeved on the surface of the other end of the connecting rod 5, the positioning sleeve 9 limits the distance of the connecting rod 5 in the support frame 6, the structural interference in the subsequent use process caused by too much protrusion is avoided, the holding rod 7 is fixedly sleeved on one side inside the support frame 6, the buffer sleeve 13 is fixedly sleeved on the surface of the holding rod 7, the anti-sliding grains are arranged on the surface of the buffer sleeve 13, and the comfort and, one end of the connecting rod 5 is movably sleeved inside the support frame 6, the surface of the connecting rod is provided with an external thread 11, the surface of the external thread 11 is in threaded connection with a threaded cover 8, one side of the threaded cover 8 is provided with an isolation belt 12, the isolation belt 12 is fixedly sleeved inside the support frame 6, the extension spring mechanism consisting of the extension spring 1, the first sleeve ring 3, the transition block 2 and the connecting rod 5 is fixedly installed together with the support frame 6 through the threaded connection between the threaded cover 8 and the external thread 11 and the position limitation of the positioning sleeve 9, the extension spring mechanism can be detached from the inside of the support frame 6 only by screwing and separating the threaded cover 8 and the external thread 11 when a user needs to increase or decrease the extension spring, the purpose of adjusting the force intensity of the device is realized, the operation is simple and convenient, compared with the traditional tension device with the undetachable extension spring, the, compared with the chest developer which realizes the detachable function by utilizing the movable sleeve of the annular structure, the chest developer has the advantages that the connection strength between the movable structures of the chest developer is also improved, and the isolation belt 12 provides an isolation structure between the holding rod 7 and the connecting rod 5, so that the chest developer is further convenient to use.

The working principle is as follows: during the use, when user's arm strength is not strong, twist earlier and change anticreep pole 10 that extension spring 1 both sides set up, make anticreep pole 10 break away from the inside of support frame 6 and four connecting rods 5, then twist and change screw cap 8, make the separation of screw cap 8 and connecting rod 5 one end, break away from connecting rod 5 from the inside of support frame 6 again, from this alright dismantle single extension spring 1 of device inside, and extension spring 1 specifically dismantles quantity and confirms according to actual user's arm strength ability, what need explain that the dismantlement direction needs be according to edge first back central principle, dismantle the back, reappear the inside that passes non-dismantled connecting rod 5 with anticreep pole 10 and support frame 6 and reset threaded connection, grip the holding rod 7 among the support frame 6 afterwards and expand extension spring 1 and normally carry out the body-building, can.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Simultaneously in the utility model discloses an in the drawing, fill the pattern and just do not do any other injecions for distinguishing the picture layer.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a chest expander extension spring for sports equipment, includes extension spring (1), its characterized in that: the utility model discloses a quick-witted support, including extension spring (1), both ends fixedly connected with transition piece (2), the first lantern ring (3) of one side fixedly connected with of transition piece (2), the second lantern ring (4) have been cup jointed in the inboard activity of the first lantern ring (3), one side fixedly connected with connecting rod (5) of the second lantern ring (4), support frame (6) have been cup jointed in the surface activity at connecting rod (5) middle part, the fixed cover in one side of support frame (6) inside has been cup jointed and has been held pole (7), external screw thread (11) have been seted up on the inside and surface of support frame (6) in the one end activity of connecting rod (5), the surperficial threaded connection of external screw thread (11) has screw cap (.

2. The tension spring of a tension device for sports equipment as claimed in claim 1, wherein: the side surface of one side of the support frame (6) is movably connected with a positioning sleeve (9), and the positioning sleeve (9) is fixedly sleeved on the surface of the other end of the connecting rod (5).

3. The tension spring of a tension device for sports equipment as claimed in claim 1, wherein: one side of the threaded cover (8) is provided with an isolation belt (12), and the isolation belt (12) is fixedly sleeved in the support frame (6).

4. The tension spring of a tension device for sports equipment as claimed in claim 1, wherein: the inside activity of connecting rod (5) has cup jointed anticreep pole (10), and the top threaded connection of anticreep pole (10) is at the top of support frame (6) one side, the bottom activity of anticreep pole (10) cup joints the bottom in support frame (6) one side.

5. The tension spring of a tension device for sports equipment as claimed in claim 1, wherein: the surface of the holding rod (7) is fixedly sleeved with a buffer sleeve (13), and the surface of the buffer sleeve (13) is provided with anti-skid grains.

6. The tension spring of a tension device for sports equipment as claimed in claim 1, wherein: the diameter value of the inside of the second lantern ring (4) is greater than the wall thickness value of the first lantern ring (3), and the diameter value of the inside of the first lantern ring (3) is greater than the diameter value of the inside of the second lantern ring (4).