CN112245875A - Anti-strain straight arm chest clamping device with semi-automatic counterweight adjustment function - Google Patents
Anti-strain straight arm chest clamping device with semi-automatic counterweight adjustment function Download PDFInfo
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- CN112245875A CN112245875A CN202011201409.1A CN202011201409A CN112245875A CN 112245875 A CN112245875 A CN 112245875A CN 202011201409 A CN202011201409 A CN 202011201409A CN 112245875 A CN112245875 A CN 112245875A
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- fixedly connected
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/062—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces
- A63B21/0626—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces with substantially vertical guiding means
- A63B21/0628—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces with substantially vertical guiding means for vertical array of weights
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/02—Exercising apparatus specially adapted for particular parts of the body for the abdomen, the spinal column or the torso muscles related to shoulders (e.g. chest muscles)
- A63B23/0233—Muscles of the back, e.g. by an extension of the body against a resistance, reverse crunch
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
- A63B23/1245—Primarily by articulating the shoulder joint
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/0054—Features for injury prevention on an apparatus, e.g. shock absorbers
Abstract
The invention relates to the related field of fitness equipment, and discloses a semi-automatic counterweight-adjusting anti-pulling straight-arm chest clamping device which comprises a main body, wherein a load cavity is arranged in the main body, a transmission cavity is communicated and arranged at the left side of the load cavity, a pull ring is fixedly connected to the lower end wall of the load cavity, a counterweight frame positioned at the upper side of the pull ring is connected in the load cavity in a sliding fit manner, a pull rope with a downward opening is arranged in the counterweight frame, the number of the counter weights which can be driven by the counter weight frame can be automatically adjusted by stepping on and pressing the pull ring and is sequentially increased, when the balance weight reaches the maximum, the sliding block can be reset to the initial position by stepping on the pull ring again so as to lead the device to return to the initial state, thereby realizing that a user can adjust the balance weight without leaving the device when using the device, from this it is more convenient relatively, can effectively prevent the user from pulling the muscle that the power of loosing suddenly and cause when using this device through the friction of friction wheel to the rope and the cooperation between centrifugal slider and the spacing chamber of centrifugation.
Description
Technical Field
The invention relates to the related field of fitness equipment, in particular to a pull-injury-preventing straight-arm chest clamping device capable of semi-automatically adjusting a balance weight.
Background
The straight arm chest clamps are fitness equipment capable of effectively exercising pectoralis major muscles, back muscles and shoulder muscles of fitness enthusiasts, and exercise effects with different requirements are achieved by changing counter weights, most of the straight arm chest clamps in the prior art achieve the function by plugging and unplugging fixing pins fixed on counter weights for counter weights by users, the process is relatively complicated, and the users need to get up and bend down each time of adjustment, and the straight arm chest clamps are relatively inconvenient; on the other hand, when the user suddenly releases force during the use of the straight arm chest clip, the muscle strain phenomenon is easy to occur.
Disclosure of Invention
The invention aims to provide a pull-injury-preventing straight-arm chest clamping device capable of semi-automatically adjusting a balance weight, which can overcome the defects in the prior art, so that the practicability of the device is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a semi-automatic counterweight-adjusting anti-pulling straight-arm chest clamping device, which comprises a main body, wherein a weight cavity is arranged in the main body, a transmission cavity is communicated and arranged at the left side of the weight cavity, a pull ring is fixedly connected to the lower end wall of the weight cavity, a counterweight frame positioned on the upper side of the pull ring is connected in a sliding fit manner in the weight cavity, a pull rope with a downward opening is arranged in the counterweight frame, a counterweight adjusting cavity is communicated and arranged at the left side of the pull rope, a power cavity is arranged on the upper side of the counterweight adjusting cavity, a threaded cavity is communicated and arranged on the upper side of the threaded cavity, an auxiliary transmission cavity with a leftward opening is arranged on the upper end surface of the pull ring, a positioning bolt is fixedly connected to the upper end surface of the pull ring, five counterweight blocks which are connected with the positioning bolt in a sliding fit manner are arranged in the pull rope in an initial state, a, the auxiliary transmission gear shaft is fixedly connected with an auxiliary transmission gear which is positioned in the auxiliary transmission cavity and is partially arranged in the load bearing cavity, a thread shaft sleeve which is in spline fit connection with the auxiliary transmission gear shaft is connected in the thread cavity in a threaded fit manner, the lower end wall of the power cavity is connected with a one-way shaft which extends upwards into the power cavity and downwards into the balance weight adjusting cavity in a rotating fit manner, a transmission shaft sleeve is arranged on the upper side of the one-way shaft, a shaft sleeve cavity with a downward opening is arranged in the transmission shaft sleeve, an auxiliary transmission shaft sleeve which extends downwards into the power cavity is connected in the shaft sleeve cavity in a spline fit manner, a one-way bearing cavity with a downward opening is arranged in the auxiliary transmission shaft sleeve, a shaft sleeve reset spring is fixedly connected between the upper end surface of the auxiliary transmission shaft and the lower end wall of the shaft sleeve cavity, a one-way bearing is arranged on the outer side of the upper, the outer terminal surface of one-way bearing with the meshing of one-way bearing chamber, fixedly connected with is located on the one-way shaft the transmission friction pulley of one-way bearing downside, the terminal fixedly connected with one-way bearing that resets of one-way shaft downside, reset one-way bearing be equipped with outward with the outer terminal surface meshing's of one-way bearing straight-teeth gear that resets, the straight-teeth gear that resets down the terminal surface with the first torsional spring of fixedly connected with between the terminal wall under the counter weight regulation chamber.
On the basis of the technical scheme, a second torsion spring positioned on the right side of the first torsion spring is fixedly connected to the lower end wall of the counterweight adjusting cavity, a transmission trigger rotating rod is fixedly connected to the tail end of the upper side of the second torsion spring, a butt strip extending to the reset straight gear butt is fixedly connected to the transmission trigger rotating rod, a driven friction wheel shaft extending downwards into the counterweight adjusting cavity and connected with the lower end wall of the power cavity in a rotating fit manner is connected to the upper end wall of the power cavity in a rotating fit manner, a driven friction wheel abutted against the transmission friction wheel is fixedly connected to the driven friction wheel shaft, a sliding block positioned in the counterweight adjusting cavity is connected to the one-way shaft in a threaded fit manner, a wire wheel cavity is arranged in the sliding block, a sliding cavity penetrating through the wire wheel cavity and penetrating from front to back is arranged in the sliding block, and the sliding cavity is connected with the driven friction wheel, the line wheel intracavity be equipped with driven friction wheel shaft spline fit connects's line wheel, be equipped with the opening right in the slider and be located the locating pin chamber on line wheel chamber right side, under the initial condition, locating pin intracavity sliding fit is connected with and extends to the top right locating pin in the locating hole, locating pin left end face with fixedly connected with reset spring between the locating pin chamber left end wall, locating pin left end face with fixedly connected with locating pin stay cord between the line wheel, terminal surface fixedly connected with is located under the slider driven friction wheel shaft right side and with the corresponding trigger lever of transmission trigger bull stick.
On the basis of the technical scheme, a transmission line shaft is connected to the upper end wall of the transmission cavity in a rotating fit manner, a third torsion spring is fixedly connected between the lower end of the lower side of the transmission line shaft and the lower end face of the transmission cavity, a transmission line wheel is fixedly connected to the transmission line shaft, a transmission straight gear positioned on the upper side of the transmission line wheel is connected to the transmission line shaft in a rotating fit manner, a transmission wheel cavity is arranged in the transmission straight gear, a transmission wheel limiting cavity is communicated with the right end wall of the transmission wheel cavity, a transmission wheel fixedly connected with the transmission line wheel shaft is arranged in the transmission wheel cavity, a limiting slide block cavity with a right opening is arranged in the transmission wheel, a limiting slide block extending rightwards to abut against the end wall of the transmission wheel limiting cavity is connected to the limiting slide block cavity in a sliding fit manner, and a slide block reset spring is, heavy burden chamber upside intercommunication be equipped with the balancing weight sets up and the ascending rope chamber of opening as central symmetry, rope chamber left and right sides intercommunication be equipped with the rope chamber is the friction pulley chamber that center and symmetry set up, running fit is connected with the friction wheel axle on the wall of friction pulley chamber rear end, both sides intercommunication is equipped with the spacing chamber of centrifugation that the friction wheel axle set up as central symmetry about the friction wheel chamber, the main part downside is equipped with the pull ring, the pull ring with fixedly connected with stay cord between the transmission line wheel.
On the basis of the technical scheme, the front end of the friction wheel shaft is fixedly connected with a friction wheel, the friction wheel shaft is fixedly connected with a centrifugal wheel positioned at the rear side of the friction wheel, in an initial state, a centrifugal slider cavity which is vertically symmetrical by taking the friction wheel shaft as a center and has an opening pointing to the direction far away from the center of the friction wheel shaft is arranged in the centrifugal wheel, a centrifugal slider corresponding to the centrifugal limit cavity is connected in the centrifugal slider cavity in a sliding fit manner, a centrifugal spring is fixedly connected between the end surface of the centrifugal slider close to the center of the friction wheel shaft and the end wall of the centrifugal slider cavity close to the center of the friction wheel shaft, the upper end surface of the main body is fixedly connected with a hinge shaft which is symmetrically arranged front and back by taking the counterweight block as a center, a hinge rod is hinged on the hinge shaft, and a rope penetrating through the rope cavity, the rope with the friction pulley butt, the terminal fixedly connected with bull stick in left side of terminal surface under the hinge bar, the terminal fixedly connected with grab handle of bull stick downside, be equipped with in the one-way axle upwards extend to with vice driving sleeve fixed connection and downwardly extending to with the transmission shaft that the straight-teeth gear that resets offsets, just the outer terminal surface of transmission shaft with the one-way axle butt.
The invention has the beneficial effects that: can independently adjust balancing weight quantity that the weight frame can drive and increase progressively in proper order through stepping on the pressure to the pull ring, when the counter weight reaches the biggest, can make the slider reset to initial position and then make this device get back to initial condition through stepping on the pressure pull ring once more, with this realized that the user can not leave the device when using this device and go to carry out the counter weight and adjust, from this relatively more convenient, can effectively prevent the muscle that the user suddenly pine power and cause when using this device from pulling through the friction of friction wheel pair rope and the cooperation between centrifugal slider and the spacing chamber of centrifugation.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic view of the whole structure of the anti-pulling straight arm chest clamping device with the semi-automatic counterweight adjusting function.
Fig. 2 is a schematic sectional view of the structure in the direction of a-a in fig. 1.
Fig. 3 is an enlarged schematic view of B in fig. 1.
Fig. 4 is an enlarged schematic view of the structure at C in fig. 1.
Fig. 5 is an enlarged schematic view of the structure at D in fig. 1.
Fig. 6 is an enlarged schematic view of E in fig. 1.
Fig. 7 is a sectional view of fig. 3 taken along the direction F-F.
Fig. 8 is an enlarged schematic view of G in fig. 4.
Detailed Description
The invention will now be described in detail with reference to fig. 1-8, wherein for ease of description the orientations described below are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
With reference to fig. 1-8, the anti-pulling straight arm chest clamping device with semi-automatic counterweight adjustment comprises a main body 10, a weight cavity 15 is arranged in the main body 10, a transmission cavity 25 is arranged on the left side of the weight cavity 15 in a communicating manner, a pull ring 19 is fixedly connected to the lower end wall of the weight cavity 15, a weight frame 17 located on the upper side of the pull ring 19 is connected in the weight cavity 15 in a sliding fit manner, a pull rope 20 with a downward opening is arranged in the weight frame 17, a counterweight adjustment cavity 71 is arranged on the left side of the pull rope 20 in a communicating manner, a power cavity 31 is arranged on the upper side of the counterweight adjustment cavity 71, a thread cavity 33 is arranged on the upper side of the power cavity 31 in a communicating manner, an auxiliary transmission cavity 28 with a leftward opening is arranged on the upper side of the thread cavity 33, a positioning bolt 61 is fixedly connected to the upper end surface of the pull, be equipped with the locating hole 53 that the opening is left in the balancing weight 18, running fit is connected with the vice drive gear axle 29 that downwardly extends to in the screw thread chamber 33 on the vice drive gear axle 28 upper end wall, fixedly connected with is located in vice drive chamber 28 and the part is arranged in the vice drive gear 30 in the heavy burden chamber 15 on the vice drive gear axle 29, screw thread chamber 33 internal thread fit is connected with the screw thread axle sleeve 32 that vice drive gear axle 29 spline fit is connected, power chamber 31 lower extreme wall running fit is connected with upwards extend to in the power chamber 31 and downwardly extending to the one-way shaft 47 in the counter weight regulation chamber 71, one-way shaft 47 upside is equipped with driving sleeve 34, be equipped with the downward axle sleeve chamber 35 of opening in the driving sleeve 34, the spline fit is connected with downwardly extending to the vice driving sleeve 37 in the power chamber 31 in the axle sleeve chamber 35, a one-way bearing cavity 72 with a downward opening is arranged in the auxiliary transmission shaft sleeve 37, a shaft sleeve return spring 36 is fixedly connected between the upper end surface of the auxiliary transmission shaft sleeve 37 and the lower end wall of the shaft sleeve cavity 35, the outer side of the tail end of the upper side of the one-way shaft 47 is provided with a one-way bearing 38, the one-way bearing 38 is abutted against the one-way shaft 47 and has certain friction with the one-way shaft 47, the outer end face of the one-way bearing 38 is engaged with the one-way bearing cavity 72, a transmission friction wheel 73 positioned at the lower side of the one-way bearing 38 is fixedly connected to the one-way shaft 47, a reset one-way bearing 59 is fixedly connected with the tail end of the lower side of the one-way shaft 47, a reset straight gear 57 meshed with the outer end face of the reset one-way bearing 59 is arranged outside the reset one-way bearing 59, a first torsion spring 58 is fixedly connected between the lower end surface of the reset straight gear 57 and the lower end wall of the counterweight adjusting cavity 71.
In addition, in one embodiment, a second torsion spring 56 located on the right side of the first torsion spring 58 is fixedly connected to the lower end wall of the counterweight adjusting cavity 71, a transmission trigger rotating rod 54 is fixedly connected to the upper end of the second torsion spring 56, a butt strip 55 extending to the butt of the return straight gear 57 is fixedly connected to the transmission trigger rotating rod 54, a driven friction wheel shaft 45 extending downwards into the counterweight adjusting cavity 71 and connected with the lower end wall of the power cavity 31 in a rotating fit manner is connected to the upper end wall of the power cavity 31 in a rotating fit manner, a driven friction wheel 39 abutted to the transmission friction wheel 73 is fixedly connected to the driven friction wheel shaft 45, a sliding block 48 located in the counterweight adjusting cavity 71 is connected to the one-way shaft 47 in a threaded fit manner, a pulley cavity 49 is arranged in the sliding block 48, a sliding cavity 46 penetrating through the pulley cavity 49 and penetrating back and forth is arranged in the sliding block 48, the sliding cavity 46 is connected with the driven friction wheel shaft 45 in a sliding fit mode, a wire wheel 44 connected with the driven friction wheel shaft 45 in a spline fit mode is arranged in the wire wheel cavity 49, a positioning pin cavity 74 with an opening facing right and located on the right side of the wire wheel cavity 49 is arranged in the sliding block 48, in an initial state, the positioning pin cavity 74 is connected with a positioning pin 40 extending rightwards to the uppermost side in the positioning hole 53 in a sliding fit mode, a reset spring 42 is fixedly connected between the left end face of the positioning pin 40 and the left end wall of the positioning pin cavity 74, a positioning pin pull rope 41 is fixedly connected between the left end face of the positioning pin 40 and the wire wheel 44, and a trigger rod 43 located on the right side of the driven friction wheel shaft 45 and corresponding to the transmission trigger rotating rod 54 is fixedly connected to.
In addition, in an embodiment, a transmission line wheel shaft 52 is connected to the upper end wall of the transmission cavity 25 in a rotating fit manner, a third torsion spring 50 is fixedly connected between the lower end of the transmission line wheel shaft 52 and the lower end surface of the transmission cavity 25, a transmission line wheel 51 is fixedly connected to the transmission line wheel shaft 52, a transmission straight gear 26 located on the upper side of the transmission line wheel 51 is connected to the transmission line wheel shaft 52 in a rotating fit manner, a transmission wheel cavity 66 is arranged in the transmission straight gear 26, a transmission wheel limiting cavity 67 is communicated with the right end wall of the transmission wheel cavity 66, a transmission wheel 27 fixedly connected with the transmission line wheel shaft 52 is arranged in the transmission wheel cavity 66, a limiting slider cavity 69 with a rightward opening is arranged in the transmission wheel 27, a limiting slider 68 which extends rightwards to abut against the end wall of the transmission wheel limiting cavity 67 is connected to the limiting slider cavity 69 in a sliding fit manner, and a slider reset is fixedly connected between the Spring 70, heavy burden chamber 15 upside intercommunication be equipped with use balancing weight 18 sets up and the ascending rope chamber 24 of opening as central symmetry, rope chamber 24 left and right sides intercommunication be equipped with rope chamber 24 is the friction pulley chamber 21 of center and symmetry setting, the cooperation of rotating on the wall of friction pulley chamber 21 rear end is connected with friction pulley shaft 23, the both sides intercommunication is equipped with friction pulley shaft 23 is the spacing chamber 62 of centrifugation that central symmetry set up about friction pulley chamber 21, the main part 10 downside is equipped with pull ring 19, pull ring 19 with fixedly connected with stay cord 20 between the transmission line wheel 51.
In addition, in one embodiment, a friction wheel 22 is fixedly connected to the front end of the friction wheel shaft 23, a centrifugal wheel 75 located at the rear side of the friction wheel 22 is fixedly connected to the friction wheel shaft 23, in an initial state, a centrifugal slider cavity 65 which is vertically symmetrical with the friction wheel shaft 23 as the center and has an opening pointing in a direction away from the center of the friction wheel shaft 23 is arranged in the centrifugal wheel 75, a centrifugal slider 63 corresponding to the centrifugal limit cavity 62 is connected in the centrifugal slider cavity 65 in a sliding fit manner, a centrifugal spring 64 is fixedly connected between the end surface of the centrifugal slider 63 close to the center of the friction wheel shaft 23 and the end wall of the centrifugal slider cavity 65 close to the center of the friction wheel shaft 23, a hinge shaft 14 which is symmetrically arranged front and back with the counterweight block 18 as the center is fixedly connected to the upper end surface of the main body 10, and a hinge, terminal surface under the articulated arm 13 with fixedly connected with runs through between the weight rest 17 up end rope 16 in rope chamber 24, rope 16 with friction pulley 22 butt, the terminal fixedly connected with bull stick 12 in left side of terminal surface under the articulated arm 13, the terminal fixedly connected with grab handle 11 of bull stick 12 downside, be equipped with in the one-way axle 47 upwards extend to with vice transmission shaft sleeve 37 fixed connection and downwardly extending to with the transmission shaft 76 that the straight-teeth gear 57 that resets offsets, just the outer terminal surface of transmission shaft 76 with the one-way axle 47 butt.
The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.
As shown in fig. 1-8, in the initial state of the apparatus of the present invention, the positioning pin 40 abuts against the positioning hole 53 in the first weight member 18 of the upper layer, and the slider 48 is located at the top end of the upper side of the screw thread of the one-way shaft 47.
Sequence of mechanical actions of the whole device:
when the device starts to work, a user sits on the device, straightens hands and holds the grab handles 11 on two sides to start direct chest-clamping movement, at the moment, the grab handles 11 rotate oppositely to drive the rotating rod 12 to rotate so as to drive the hinge rod 13 to rotate, the hinge rod 13 rotates to drive the rope 16 so as to drive the counterweight frame 17 to move upwards, the device defaults that the initial counterweight is a counterweight block 18, and the counterweight frame 17 moves upwards to drive the counterweight block 18 to move upwards synchronously;
when a user needs to properly increase the movement counterweight of the device according to the self condition, the right foot needs to extend into the pull ring 19 and perform a pressing action downwards, at the moment, the pull ring 19 moves downwards and pulls the pull rope 20, the transmission line wheel 51 starts to rotate under the pulling action influence of the pull rope 20, the transmission line wheel 51 rotates to drive the transmission line shaft 52 to rotate, the third torsion spring 50 starts to contract inwards under the torsion action influence of the transmission line wheel shaft 52, the transmission line wheel shaft 52 rotates to drive the transmission wheel 27 to rotate so as to drive the transmission straight gear 26 to rotate through the limiting slide block 68, the transmission straight gear 26 rotates to drive the auxiliary transmission gear 30 to rotate so as to drive the auxiliary transmission gear shaft 29 to rotate, and the auxiliary transmission gear shaft 29 rotates to drive the threaded shaft sleeve 32 to rotate and simultaneously move downwards;
when the threaded shaft sleeve 32 moves downwards, the threaded shaft sleeve 32 abuts against the upper end face of the transmission shaft sleeve 34 and drives the transmission shaft sleeve 34 to rotate along the same direction and move downwards so as to drive the auxiliary transmission shaft sleeve 37 to rotate along the same direction, the shaft sleeve return spring 36 is influenced by the downward thrust of the transmission shaft sleeve 34 to compress downwards, the auxiliary transmission shaft sleeve 37 rotates to drive the one-way bearing 38 to rotate so as to drive the transmission shaft 76 to rotate, the transmission shaft 76 rotates to drive the one-way shaft 47 to rotate so as to drive the driven friction wheel 39 to rotate through the transmission friction wheel 73, the driven friction wheel 39 rotates to drive the pulley 44 to rotate so as to drive the positioning pin 40 to move leftwards through the return spring 42 until the positioning pin 40 is separated from the embedding of the positioning hole 53, the return spring 42 is driven by the rotation of the one-way shaft 47 to move leftwards by the positioning, meanwhile, the one-way shaft 47 rotates to drive the reset one-way bearing 59 to rotate and drive the reset spur gear 57 to rotate, and the first torsion spring 58 is influenced by the torsion of the reset spur gear 57 and is compressed inwards;
when a user steps on the pull ring 19 to the maximum limit, the downward stepping action of the pull ring 19 is withdrawn, at the moment, the third torsion spring 50 restores the natural state to expand outwards and drives the transmission line wheel shaft 52 to rotate, and further drives the transmission shaft sleeve 34 to reset upwards, in the process, the abutting strip 55 is always abutted against the outer end face of the reset straight gear 57 and the reset one-way bearing 59 is added, so that the reset straight gear 57 is still and still, the energy storage state of the first torsion spring 58 cannot be influenced, in addition, in the process of resetting the threaded shaft sleeve 32, the reset spring 42 restores the natural state and extends rightwards to the positioning pin 40 to enter the positioning hole 53 of the next balancing weight 18 to be embedded with the positioning pin, and in each repeated stepping action of the pull ring 19, the balancing weight of one balancing weight 18 is increased, and the realization of the device for increasing;
when the counterweight reaches the maximum and the user can not adapt to the gravity load, the pull ring 19 is pressed again, at this time, the slide block 48 moves downwards to drive the trigger rod 43 to move downwards and abut against the transmission trigger rotating rod 54, the transmission trigger rotating rod 54 rotates under the influence of the downward thrust of the trigger rod 43, the second torsion spring 56 contracts inwards under the influence of the torsion force of the transmission trigger rotating rod 54, the transmission trigger rotating rod 54 rotates to drive the abutting strip 55 to rotate to be separated from the abutting state with the reset spur gear 57, at this time, the first torsion spring 58 is not limited any more and starts to expand outwards and drive the one-way shaft 47 to rotate so as to drive the slide block 48 to move upwards, finally, the slide block 48 moves to the top end of the thread of the one-way shaft 47, the positioning pin 40 is embedded with the one-way bearing 38 on the, in the process, the transmission spur gear 26 rotates to break through the limiting effect of the limiting slide block 68 on the transmission wheel limiting cavity 67 without influencing the motion state of the transmission spur gear 26 per se;
when the body force of a user is weak or other accidents cause that enough force cannot be applied to the grab handle 11, the weight rack 17 tends to fall rapidly, the rope 16 is dragged by the weight rack 17 to drive the friction wheel 22 to rotate, the friction wheel 22 rotates to drive the friction wheel shaft 23 to rotate so as to drive the centrifugal wheel 75 to rotate, the centrifugal wheel 75 rotates to drive the centrifugal slider 63 to rotate, meanwhile, the centrifugal slider 63 is influenced by the centrifugal action and slides towards the center direction of the friction wheel shaft 23 to be embedded with the centrifugal limiting cavity 62, at the moment, the rope 16 is buffered by the friction action of the friction wheel 22, and the rapid falling motion tendency of the weight rack 17 is further counteracted, so that the effect of preventing pulling injury when the user carelessly loses force is achieved.
The invention has the beneficial effects that: can independently adjust balancing weight quantity that the weight frame can drive and increase progressively in proper order through stepping on the pressure to the pull ring, when the counter weight reaches the biggest, can make the slider reset to initial position and then make this device get back to initial condition through stepping on the pressure pull ring once more, with this realized that the user can not leave the device when using this device and go to carry out the counter weight and adjust, from this relatively more convenient, can effectively prevent the muscle that the user suddenly pine power and cause when using this device from pulling through the friction of friction wheel pair rope and the cooperation between centrifugal slider and the spacing chamber of centrifugation.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a semi-automatic adjustment counter weight prevent pulling straight arm chest expander, includes the main part, its characterized in that: be equipped with the burden chamber in the main part, burden chamber left side intercommunication is equipped with the transmission chamber, fixedly connected with pull ring on the end wall under the burden chamber, burden intracavity sliding fit is connected with and is located the counter weight frame of pull ring upside, be equipped with the decurrent stay cord of opening in the counter weight frame, stay cord left side intercommunication is equipped with the counter weight and adjusts the chamber, counter weight is adjusted the chamber upside and is equipped with the power chamber, power chamber upside intercommunication is equipped with the screw thread chamber, screw thread chamber upside is equipped with the vice transmission chamber of opening left, pull ring up end fixedly connected with locating pin, under the initial state, be equipped with in the stay cord five with the balancing weight that locating pin sliding fit is connected, be equipped with the locating hole of opening left in the balancing weight, running fit is connected with down on the vice transmission chamber up end wall and is extended vice transmission gear shaft in the screw thread chamber, on the vice transmission gear shaft fixedly connected with be located vice The gear, the screw thread fit is connected with the screw thread axle sleeve that is connected with the auxiliary drive gear axle spline fit in the screw thread cavity, the power cavity lower end wall is connected with the unidirectional axle that extends upwards in the power cavity and downwards in the counterweight adjusting cavity in a running fit manner, the unidirectional axle upside is provided with the drive axle sleeve, the drive axle sleeve is provided with the axle sleeve cavity with the downward opening, the auxiliary drive axle sleeve that extends downwards in the power cavity is connected in the axle sleeve cavity spline fit in the axle sleeve cavity, the auxiliary drive axle sleeve is provided with the unidirectional bearing cavity with the downward opening in the auxiliary drive axle sleeve, the axle sleeve reset spring is fixedly connected between the upper end surface of the auxiliary drive axle sleeve and the lower end wall of the axle sleeve cavity, the outer side of the tail end of the upper side of the unidirectional axle is provided with the unidirectional bearing, the unidirectional bearing is abutted against the unidirectional axle and has a certain, fixedly connected with is located on the one-way shaft transmission friction pulley of one-way bearing downside, the terminal fixedly connected with one-way bearing that resets of one-way shaft downside, reset one-way bearing be equipped with outward with the outer terminal surface meshing's of one-way bearing that resets straight-tooth gear, the terminal surface under the straight-tooth gear that resets with fixedly connected with torsional spring between the lower terminal wall of counter weight regulation chamber.
2. The anti-pulling straight-arm chest expander with the semi-automatic counterweight adjusting function as claimed in claim 1, wherein: the counterweight adjusting cavity is characterized in that a second torsion spring located on the right side of the first torsion spring is fixedly connected to the lower end wall of the counterweight adjusting cavity, a transmission triggering rotating rod is fixedly connected to the tail end of the upper side of the second torsion spring, a butt strip extending to the butt of the reset straight gear butt is fixedly connected to the transmission triggering rotating rod, a driven friction wheel shaft extending downwards into the counterweight adjusting cavity and connected with the lower end wall of the power cavity in a rotating fit manner is connected to the upper end wall of the power cavity in a rotating fit manner, a driven friction wheel abutted against the transmission friction wheel is fixedly connected to the driven friction wheel shaft, a sliding block located in the counterweight adjusting cavity is connected to the one-way shaft in a threaded fit manner, a wire wheel cavity is arranged in the sliding block, a sliding cavity penetrating through the wire wheel cavity and penetrating through the front and back is arranged in the sliding block, the sliding cavity is connected with the driven friction wheel shaft in a sliding fit, be equipped with the opening right in the slider and be located the locating pin chamber on line wheel chamber right side, under the initial condition, locating pin intracavity sliding fit is connected with and extends to the top right locating pin in the locating hole, the locating pin left end face with fixedly connected with reset spring between the locating pin chamber left end wall, the locating pin left end face with fixedly connected with locating pin stay cord between the line wheel, terminal surface fixedly connected with is located under the slider the driven friction shaft right side and with the corresponding trigger lever of bull stick is triggered in the transmission.
3. The anti-pulling straight-arm chest expander with the semi-automatic counterweight adjusting function as claimed in claim 1, wherein: the upper end wall of the transmission cavity is connected with a transmission line shaft in a rotating fit manner, a third torsion spring is fixedly connected between the lower end of the transmission line shaft and the lower end surface of the transmission cavity, the transmission line shaft is fixedly connected with a transmission line wheel, the transmission line shaft is connected with a transmission straight gear positioned on the upper side of the transmission line wheel in a rotating fit manner, a transmission wheel cavity is arranged in the transmission straight gear, the right end wall of the transmission wheel cavity is communicated with a transmission wheel limiting cavity, a transmission wheel fixedly connected with the transmission line wheel shaft is arranged in the transmission wheel cavity, a limiting slide block cavity with a right opening is arranged in the transmission wheel, a limiting slide block extending rightwards to abut against the end wall of the transmission wheel limiting cavity is connected in a sliding fit manner in the limiting slide block cavity, and a slide block reset spring is fixedly connected between the left, heavy burden chamber upside intercommunication be equipped with the balancing weight sets up and the ascending rope chamber of opening as central symmetry, rope chamber left and right sides intercommunication be equipped with the rope chamber is the friction pulley chamber that center and symmetry set up, running fit is connected with the friction wheel axle on the wall of friction pulley chamber rear end, both sides intercommunication is equipped with the spacing chamber of centrifugation that the friction wheel axle set up as central symmetry about the friction wheel chamber, the main part downside is equipped with the pull ring, the pull ring with fixedly connected with stay cord between the transmission line wheel.
4. The anti-pulling straight-arm chest expander with the semi-automatic counterweight adjusting function as claimed in claim 3, wherein: a friction wheel is fixedly connected to the tail end of the front side of the friction wheel shaft, a centrifugal wheel positioned on the rear side of the friction wheel is fixedly connected to the friction wheel shaft, a centrifugal slider cavity which is vertically symmetrical with the friction wheel shaft as a center and has an opening pointing to the direction far away from the center of the friction wheel shaft is arranged in the centrifugal wheel in an initial state, a centrifugal slider corresponding to the centrifugal limiting cavity is connected in the centrifugal slider cavity in a sliding fit manner, a centrifugal spring is fixedly connected between the end surface of the centrifugal slider close to the center of the friction wheel shaft and the end wall of the centrifugal slider cavity close to the center of the friction wheel shaft, a hinge shaft which is symmetrically arranged front and back with the balancing weight as a center is fixedly connected to the upper end surface of the main body, a hinge rod is hinged to the hinge shaft, and a rope penetrating through the rope cavity, the rope with the friction pulley butt, the terminal fixedly connected with bull stick in left side of terminal surface under the hinge bar, the terminal fixedly connected with grab handle of bull stick downside, be equipped with in the one-way axle upwards extend to with vice driving sleeve fixed connection and downwardly extending to with the transmission shaft that the straight-teeth gear that resets offsets, just the outer terminal surface of transmission shaft with the one-way axle butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201409.1A CN112245875A (en) | 2020-11-02 | 2020-11-02 | Anti-strain straight arm chest clamping device with semi-automatic counterweight adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201409.1A CN112245875A (en) | 2020-11-02 | 2020-11-02 | Anti-strain straight arm chest clamping device with semi-automatic counterweight adjustment function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112245875A true CN112245875A (en) | 2021-01-22 |
Family
ID=74268683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011201409.1A Withdrawn CN112245875A (en) | 2020-11-02 | 2020-11-02 | Anti-strain straight arm chest clamping device with semi-automatic counterweight adjustment function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112245875A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101602A (en) * | 2021-04-28 | 2021-07-13 | 邵阳学院 | High-tension dorsal muscle trainer for physical education |
| CN113996005A (en) * | 2021-10-25 | 2022-02-01 | 温州职业技术学院 | Arm strength lifting training device for physical education teaching |
| CN115070333A (en) * | 2022-08-19 | 2022-09-20 | 长治市三耐铸业有限公司 | Matching device for overturning of positioner |
-
2020
- 2020-11-02 CN CN202011201409.1A patent/CN112245875A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113101602A (en) * | 2021-04-28 | 2021-07-13 | 邵阳学院 | High-tension dorsal muscle trainer for physical education |
| CN113996005A (en) * | 2021-10-25 | 2022-02-01 | 温州职业技术学院 | Arm strength lifting training device for physical education teaching |
| CN115070333A (en) * | 2022-08-19 | 2022-09-20 | 长治市三耐铸业有限公司 | Matching device for overturning of positioner |
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Application publication date: 20210122 |