CN216934576U - Bench press frame with auto-lock protection function that kick-backs - Google Patents

Abstract

The utility model discloses a bench press frame with self-locking rebound protection function, belonging to the technical field of fitness equipment, comprising a support, wherein the support is sequentially provided with a lying plate, a barbell and a retractor with emergency locking function and automatic recoil function of the pull rope from bottom to top, the retractors are fixed on the support at intervals, the end of the pull rope in the retractor is provided with a pull ring sleeved on a barbell cross bar, the retractor is used as an emergency self-locking device, the retractor can not cause any limitation on the walking path of the barbell when in use, and the barbell can be lowered to any height, thereby fully stimulating muscles, achieving the due exercise effect, meanwhile, the self-rebound force of the retractor in exercise is only enough to recoil the pull rope, so the pulling force of the barbell can be basically ignored, further, no assistance can be provided for a body builder, and if inertia force is generated during exercise, the retractor can self-lock due to over-violent force, to remind and correct the referral gesture.

Description

Bench press frame with auto-lock protection function that kick-backs

Technical Field

The utility model relates to the technical field of fitness equipment, in particular to a bench press frame with a self-locking rebound protection function.

Background

With the rapid development of the fitness industry, the problems in fitness are more and more obvious. For example, the flat-bed bench press frame has no safety protection device, so people need to be protected by the flat-bed bench press frame when the flat-bed bench press frame is used, the barbell suddenly slides off to injure the human body in the body building process or the barbell is lifted and placed back on the flat-bed bench press frame by a body building person when the body building is finished, and the flat-bed bench press frame not only brings low labor cost to a body building room, but also is not suitable for the body building person to use alone at home. Therefore, some flat-plate bench presses with safety protection devices are gradually introduced in the market, such as smith bench presses, a bottom barbell limiting device is used to prevent the barbell from smashing the body when slipping off, but although smith bench presses solve the problem of guarding by a person during bench presses, the path traced by the barbell is limited on a straight line when the person pushes the barbell, the adjustment of the limiting device also limits the maximum position where the barbell can descend, and in barbell pushing, the curved path traced by the barbell and the lowest position where the barbell can descend are of great importance to the exercise effect, so smith bench presses are only suitable for primary fitness users, and the exercise effect of higher fitness enthusiasts cannot be achieved.

In order to solve the above problems, the utility model patent with patent number "201821747806.7" and patent name "a free safety type barbell bench press rack" provides a bench press rack with protection and without limitation of barbell exercise path, which comprises a rack body and a lying board, one end of the lying board is installed on the middle cross bar of the rack body, the other end is installed with a supporting leg, the top ends of two upright posts of the rack body are respectively installed with an electric rope winder, the end of the pull rope of the electric rope winder is sleeved on the barbell through a connecting sleeve, the electric rope winder is provided with a pressure sensor, in order to avoid the barbell from falling suddenly, the added electric rope winder can provide upward pulling force to the barbell, when the pressure sensor senses pressure, the electric rope winder can operate to draw back the barbell, thereby assisting the exerciser to place the barbell on the diagonal bar, and meanwhile, an alarm is added for drawing the attention of the surrounding personnel, furthermore, the electric rope winder can help the exercising personnel in time, but the electric rope winder always provides certain assistance for the exercising personnel due to the upward tension provided by the barbell, so that the exercising effect is greatly reduced during the body building.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides a bench press frame with a self-locking rebound protection function, wherein a retractor is used as an emergency self-locking device, the retractor cannot limit the walking path of a barbell in use, the barbell can be lowered to any height, so that muscles are fully stimulated to achieve a due exercise effect, and meanwhile, the self rebound force of the retractor is only enough for pulling the rope to rewind in exercise, the pulling force of the barbell can be ignored, so that the retractor cannot provide assistance for a body builder, the exercise effect is reduced, and if inertia force is generated in exercise, self-locking can be generated due to overexertion of the retractor to remind and correct a push-up posture.

In order to achieve the purpose, the utility model provides the following scheme: the utility model provides a bench press frame with auto-lock protect function that kick-backs, includes the support, the support from the bottom up is equipped with service creeper, barbell in proper order and has the retractor of urgent locking function and the automatic recoil function of stay cord, fixing of retractor interval is in on the support, the end of stay cord in the retractor is equipped with the cover and establishes pull ring on the barbell whippletree.

Preferably, the coiler includes that inside rotation is connected with the stay cord box of runner, makes the self-locking mechanism of runner locking when the fast revolution and making when the runner is not atress the resilience mechanism of runner gyration, the runner rotates through the pivot to be connected on the stay cord box, the stay cord winding is in on the runner.

Preferably, the rotating wheel is provided with an annular groove for winding the pull rope.

Preferably, the pull rope box comprises a right shell and a left shell which are detachably connected with each other, the rotating wheel is positioned between the right shell and the left shell, and two ends of the rotating shaft are rotatably connected with the left shell and the right shell.

Preferably, the self-locking mechanism comprises an eccentric rotating block and a locking ring fixed on the side wall of the stay rope box; the locking ring and the rotating shaft are arranged concentrically, a ratchet groove is formed in an inner ring of the locking ring, the eccentric rotating block is located in the ratchet groove, a pawl used for being clamped into the ratchet groove when the eccentric rotating block rotates rapidly is arranged on the outer side of the eccentric rotating block, a special-shaped eccentric groove penetrating through the eccentric rotating block is formed in the inner side of the eccentric rotating block, a Y-shaped protrusion is arranged in the special-shaped eccentric groove, the rotating shaft of the rotating wheel is a hollow shaft with a rectangular notch in the end, the hollow shaft sequentially penetrates through the side wall of the rope pulling box and the special-shaped eccentric groove, and two raised protrusions of the Y-shaped protrusion are located in the rectangular notch; and a limiting cover plate for preventing the eccentric rotating block from axially moving is arranged outside the locking ring.

Preferably, the end of the rotating shaft is rotatably connected inside the pull rope box through a bearing.

Preferably, the rebound mechanism comprises a flat spiral spring and a fixed upright post, the fixed upright post is fixed on the inner side wall of the rope pulling box, the inner ring end of the flat spiral spring is fixed on the rotating shaft, and the outer ring end of the flat spiral spring is fixed on the fixed upright post.

Preferably, the pull cord is a steel wire.

Preferably, the support includes the crossbeam base, erects door-shaped frame on the crossbeam base, be equipped with on two stands of door-shaped frame and be used for laying the card of barbell whippletree holds in the palm, the coiler is established respectively the both ends of the top crossbeam of door-shaped frame.

Preferably, the support comprises a cross beam support with ends fixed on the two upright posts of the portal frame and a longitudinal beam base vertically fixed on the cross beam base, the longitudinal beam base is provided with support upright posts, and two ends of the lying plate are respectively fixed on the support upright posts and the cross beam support.

Compared with the prior art, the utility model achieves the following technical effects:

1. the retractor is arranged above the barbell on the horizontal pushing frame, the end of the pull rope of the retractor is sleeved on the cross bar of the barbell through the pull ring, and when the barbell is normally used, the pull rope cannot cause any limitation on the moving path of the cross bar, so the barbell can be flexibly used according to training requirements, and when the barbell is normally used, the retractor cannot limit the maximum position where the barbell can descend, so that the use of a primary fitness person is met, more advanced fitness enthusiasts can also be met, and the growth of the pectoralis major, the brachiocephalic muscle and the deltoid muscle front beam can be fully stimulated; meanwhile, under the emergency locking function of the retractor, once the barbell is released from the hand or is powerless to support the barbell to fall, the retractor can instantly lock the pull rope to enable the barbell to hover in the air, so that body building enthusiasts are prevented from being injured by crashing; the pull rope of the retractor has the automatic rewinding function, so that the knotting of the pull rope can be avoided when the barbell is put back on the bracket; and in the exercise, control barbell makes its removal in quasi-static state, and not utilize inertia to increase and push up quantity, also is vital to the body-building effect, and this bench press frame can be fine reaches this requirement, when the human body utilizes barbell lift inertia to push up, because the atress is too violent and the coiler can take place the auto-lock to can remind and correct the person's of body-building push up posture.

2. The self-locking mechanism of the retractor consists of an eccentric rotating block, a locking ring and a limit baffle; when the eccentric rotating block rotates at a low speed, the centrifugal force is small, and the rotating shaft applies pressure to the Y-shaped protrusion through the rectangular notch, so that the eccentric rotating block makes circular motion along with the rotating shaft; when the eccentric rotating block rotates at a high speed, the centrifugal force is large, and due to the fact that the weight of the eccentric rotating block is uneven, the eccentric rotating block can rotate eccentrically, so that a pawl of the eccentric rotating block can be directly inserted into a ratchet groove in the locking ring, the rectangular notch rotates to the position where two protruding heads of the Y-shaped protrusion are occluded, the whole eccentric rotating block is clamped, and the pull rope is locked; different from the electric winder, the arrangement mode has the advantages that the larger the mass of the barbell is, the larger the generated centrifugal force is, and the shorter the self-locking reaction time is caused.

3. The rebounding mechanism of the retractor comprises a plane spiral spring and a fixed upright post, after the pulling force on the pulling rope is released, the plane spiral spring releases the spring potential energy stored due to the rotation of the rotating wheel, the rotating wheel rotates in the opposite direction, so that the rotating wheel rotates, and the pulling rope is wound on the rotating wheel again; meanwhile, the rectangular notch pushes back the Y-shaped protrusion to make the eccentric rotating block also rotate, so that the pawl is separated from the ratchet groove of the saw.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic structural view of a bench press frame;

fig. 2 is a schematic structural view of the retractor;

fig. 3 is a schematic structural view of a retractor without a check cover;

FIG. 4 is a schematic structural view of the right housing;

FIG. 5 is a schematic structural view of the left housing;

FIG. 6 is a schematic structural view of the rotor;

FIG. 7 is a schematic structural view of a flat spiral spring;

FIG. 8 is a schematic view of the eccentric rotary block;

FIG. 9 is a schematic view of the locking ring;

fig. 10 is a schematic structural view of the retractor after locking.

Description of reference numerals: 1. a support; 2. a lying board; 3. supporting the upright post; 4. a retractor; 5. pulling a rope; 6. a pull ring; 7. a rope pulling box; 8. a right housing; 9. a left housing; 10. a rotating wheel; 11. a rotating shaft; 12. a rectangular notch; 13. an annular groove; 14. an eccentric rotating block; 15. a locking ring; 16. a ratchet groove; 17. a pawl; 18. a special-shaped eccentric groove; 19. a Y-shaped protrusion; 20. an upper raised head; 21. a lower raised head; 22. a limiting cover plate; 23. a flat spiral spring; 24. fixing the upright post; 25. a bearing; 26. a barbell; 27. clamping and supporting; 28. an inner ring end socket; 29. an outer ring end; 30. a beam base; 31. a door-shaped frame; 32. supporting a cross beam; 33. longeron base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The embodiment provides a bench press frame with auto-lock protect function of kick-backing, as shown in fig. 1 to fig. 10, including support 1, support 1 from the bottom up is equipped with service creeper 2 in proper order, barbell 26 and a plurality of coiler 4, and barbell 26 is put on support 1, and coiler 4 has the fixing on support 1 of certain interval, and the end fixedly connected with pull ring 6 of stay cord 5 in coiler 4, and 6 covers of pull ring are established on barbell 26's whippletree, and coiler 4 has urgent locking function and the automatic recoil function of stay cord. Preferably, referring to fig. 1, there are two retractors 4, two retractors 4 are respectively arranged at two ends of the top of the bracket 1, and the pull ring 6 is sleeved at two ends of the bar of the barbell 26. During the use, the body-building person lies flat on service creeper 2, then the whippletree of barbell 26 is held to both hands, take off barbell 26 take exercise the health can, because there is the existence of coiler 4, if the condition of barbell 26 taking off the hand suddenly, barbell 26 pull-down stay cord 5, coiler 4 can promptly lock stay cord 5 to make barbell 26 hover aloft, can not continue the tenesmus, thereby protection body-building person can not injured by a crashing object. When not taking exercise, available both hands put back support 1 with barbell 26 on, also can directly spill the hand, and barbell 26 falls, 4 locking stay cords 5 of coiler, barbell 26 hover aloft, then have a rest after a moment, put back support 1 with barbell 26 again on, then along with barbell 26 rises, coiler 4 can automatic rolling stay cord 5, avoids appearing winding problem.

In this embodiment, as shown in fig. 1 to 10, the coiler 4 includes the stay cord box 7, self-locking mechanism and resilient mounting, be equipped with the runner 10 in the stay cord box 7, the runner 10 rotates through the pivot 11 and connects in the stay cord box 7, stay cord 5 twines on the runner 10, self-locking mechanism can lock the runner 10 in the twinkling of an eye when the stay cord 5 is drawn and is driven the quick rotation of runner 10, make it not rotatory, the length of stay cord 5 is also not changing, thereby hover barbell 26 in half sky, resilient mounting can be when stay cord 5 does not receive the atress, when the runner 10 does not receive stay cord 5 pulling force promptly, make the runner 10 revolve, thereby rewind stay cord 5 onto runner 10, thereby avoid the winding of stay cord 5 to tie a knot.

Further, in the present embodiment, the rotating wheel 10 is provided with the annular groove 13, the pulling rope 5 is wound in the annular groove 13, and the annular groove 13 can prevent the pulling rope 5 from radially separating from the rotating wheel 10.

Further, in this embodiment, the rope pulling box 7 is formed by combining the right casing 8 and the left casing 9, after the right casing 8 and the left casing 9 are combined, the rotating wheel 10 is buckled therein, the rotating wheel 10 is fixed on the rotating shaft 11, and the rotating shaft 11 is rotatably connected to the left casing 9 and the right casing 8.

In this embodiment, as shown in fig. 1 to 10, the self-locking mechanism includes an eccentric rotating block 14 and a locking ring 15; the eccentric rotating block 14 is an oval sheet-shaped structure, the outside of the eccentric rotating block 14 is provided with a pawl 17, the pawl 17 comprises a plurality of pawl teeth, as shown in fig. 3 and 8, the pawl 17 can be provided with three pawl tooth pawls 17; the inner side of the eccentric rotating block 14 is provided with a special-shaped eccentric groove 18 penetrating through the eccentric rotating block 14, the special-shaped eccentric groove 18 is provided with a Y-shaped protrusion 19, the Y-shaped protrusion 19 is far away from the pawl 17, the Y-shaped protrusion 19 comprises an upper protruding head 20 and a lower protruding head 21, the upper protruding head 20 is positioned on one side close to the pawl 17, the lower protruding head 21 is positioned on one side far away from the pawl 17, the overall mass distribution of the eccentric rotating block 14 is uneven, and eccentric rotation can be generated during rapid rotation. The locking ring 15 is an annular thin disc with a circle of ratchet grooves 16 arranged inside, the locking ring 15 is fixed on the right shell 8 of the pull rope box 7 through screws, and the locking ring 15 and the rotating shaft 11 are arranged concentrically. The eccentric rotating block 14 is positioned in the ratchet groove 16, the rotating shaft 11 of the rotating wheel 10 is a hollow shaft, the end of the hollow shaft is provided with a rectangular notch 12, the hollow shaft sequentially penetrates through the right shell 8 and the special-shaped eccentric groove 18, and two raised heads (an upper raised head 20 and a lower raised head 21) of the Y-shaped protrusion 19 are positioned in the rectangular notch 12; the outer fixedly connected with spacing apron 22 of lock ring 15, spacing apron 22 detains eccentric rotatory piece 14 in lock ring 15, prevents that eccentric rotatory piece 14 axial from breaking away from lock ring 15.

Self-locking and rebounding principle: centrifugal force formula F-mr omega²Wherein m is the mass of the rotating block, r is the radius of gyration, and ω is the angular velocity of rotation, the direction pointing from inside to outside. It can be seen that when the eccentric rotary block 14 rotates at a low speed, the centrifugal force is small, and the rotating shaft 11 passes through the rectangular notch 12, the lower protrusion 21 is pressed to make the eccentric rotary block 14 perform a circular motion along with the rotary shaft 11. When the eccentric rotation block 14 rotates at a high speed, the centrifugal force is large, the eccentric rotation block 14 does not rotate circularly along the rotating shaft 11, but rotates eccentrically, and the radius of the eccentric rotation is larger than that of the circular rotation, so that the pawl 17 of the eccentric rotation block 14 is directly inserted into the ratchet groove 16 on the locking ring 15, when the rectangular notch 12 on the rotating shaft 11 rotates to the position meshed with the lower raised head 21 and the upper raised head 20, the whole eccentric rotation block 14 is clamped, the whole device is self-locked, and the state of the self-locking mechanism is shown in fig. 10.

Further, in this embodiment, bearings 25 are disposed in the middle of the right housing 8 and the left housing 9, one end of the rotating shaft 11 is inserted into the bearing 25 of the left housing 9, and the other end of the rotating shaft 11 is inserted into the bearing 25 of the right housing 8 and extends out of the bearing 25 of the right housing 8.

In this embodiment, as shown in fig. 1 to 10, the resilient mechanism includes a spiral spring 23 and a fixed pillar 24, the fixed pillar 24 is fixed to the bottom of the inner sidewall of the left housing 9, an inner ring end 28 of the spiral spring 23 is fixed to the rotating shaft 11, and an outer ring end 29 of the spiral spring 23 is fixed to the fixed pillar 24.

The principle of rope rewinding is as follows: when the pulling force on the pulling rope 5 is released, the spring potential energy stored by the flat spiral spring 23 due to the rotation of the rotating wheel 10 is released, and the rotating wheel 10 rotates in the opposite direction, so that the rotating wheel 10 rotates, and the pulling rope 5 is wound on the rotating wheel 10 again; at the same time, the rectangular notch 12 pushes the upper nose 20, which causes the eccentric rotary block 14 to also rotate, disengaging the pawl 17 from the saw ratchet groove 16.

In this embodiment, as shown in fig. 1 to 10, the pulling rope 5 is a steel wire, which has sufficient strength and does not break due to excessive instantaneous impact.

In this embodiment, the support 1 includes the crossbeam base 30, erects the door-shaped frame 31 on the crossbeam base 30, all is equipped with a card on two stands of door-shaped frame 31 and holds in the palm 27, and barbell 26 whippletree can lay on card holds in the palm 27, and two retractors 4 are fixed on the both ends of the top crossbeam of door-shaped frame 31, and stay cord 5 droops naturally, and 6 covers of pull ring at its end are established at barbell 26 whippletree both ends.

Further, in this embodiment, the support 1 further includes a cross beam support 32, a longitudinal beam base 33 and a support column 3, the cross beam support 32 is fixed on two columns of the door-shaped frame 31 and located below the clamping support 27, a head end of the longitudinal beam base 33 is vertically fixed on the cross beam base 30, the support column 3 is fixed at a tail end of the cross beam base 30, and two ends of the lying plate 2 are respectively installed on the support column 3 and the cross beam support 32.

The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.

Claims (10)

1. The utility model provides a bench press frame with auto-lock protect function that kick-backs, a serial communication port, which comprises a bracket, the support from the bottom up is equipped with service creeper, barbell in proper order and has the retractor of urgent locking function and the automatic recoil function of stay cord, fixing of retractor interval is in on the support, the end of stay cord in the retractor is equipped with the cover and establishes pull ring on the barbell whippletree.

2. The bench press frame with self-locking rebound protection function as claimed in claim 1, wherein the retractor comprises a rope pulling box connected with a rotating wheel in an internal rotation mode, a self-locking mechanism enabling the rotating wheel to be locked when the rotating wheel rotates rapidly, and a rebound mechanism enabling the rotating wheel to rotate when the rotating wheel is not stressed, the rotating wheel is connected to the rope pulling box in a rotating mode through a rotating shaft, and the rope is wound on the rotating wheel.

3. The bench press frame with self-locking rebound protection function as claimed in claim 2, wherein the rotating wheel is provided with an annular groove for winding the pulling rope.

4. The bench press frame with self-locking rebound protection function as claimed in claim 2, wherein the pull rope box comprises a right shell and a left shell which are detachably connected with each other, the rotating wheel is positioned between the right shell and the left shell, and two ends of the rotating shaft are rotatably connected with the left shell and the right shell.

5. The bench press frame with the self-locking rebound protection function as claimed in claim 2, wherein the self-locking mechanism comprises an eccentric rotating block and a locking ring fixed on the side wall of the stay rope box; the locking ring and the rotating shaft are arranged concentrically, a ratchet groove is formed in an inner ring of the locking ring, the eccentric rotating block is located in the ratchet groove, a pawl used for being clamped into the ratchet groove when the eccentric rotating block rotates rapidly is arranged on the outer side of the eccentric rotating block, a special-shaped eccentric groove penetrating through the eccentric rotating block is formed in the inner side of the eccentric rotating block, a Y-shaped protrusion is arranged in the special-shaped eccentric groove, the rotating shaft of the rotating wheel is a hollow shaft with a rectangular notch in the end, the hollow shaft sequentially penetrates through the side wall of the rope pulling box and the special-shaped eccentric groove, and two raised protrusions of the Y-shaped protrusion are located in the rectangular notch; and a limiting cover plate for preventing the eccentric rotating block from axially moving is arranged outside the locking ring.

6. The bench press frame with self-locking rebound protection function as claimed in claim 5, wherein the end of the rotating shaft is rotatably connected inside the pulling rope box through a bearing.

7. The bench press frame with self-locking rebound protection function of claim 2, wherein the rebound mechanism comprises a flat spiral spring and a fixed upright post, the fixed upright post is fixed on the inner side wall of the pull rope box, the inner ring end of the flat spiral spring is fixed on the rotating shaft, and the outer ring end of the flat spiral spring is fixed on the fixed upright post.

8. The bench press frame with self-locking rebound protection function as claimed in claim 1, wherein the pull rope is a steel wire.

9. The bench press frame with self-locking rebound protection function of claim 1, wherein the support comprises a cross beam base, a door-shaped frame erected on the cross beam base, two columns of the door-shaped frame are provided with clamping supports for placing the barbell cross bar, and the retractors are respectively arranged at two ends of a top cross beam of the door-shaped frame.

10. The bench press frame with self-locking rebound protection function of claim 9, wherein the support comprises a cross beam support with ends fixed on two vertical columns of the door-shaped frame, and a longitudinal beam base vertically fixed on the cross beam base, wherein the longitudinal beam base is provided with a support vertical column, and two ends of the lying plate are respectively fixed on the support vertical column and the cross beam support.

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