Forcing device for movable arm connecting rod of fitness equipment

Abstract

The utility model discloses a fitness equipment swing arm connecting rod forcing device which comprises a support, a swing arm, a connecting rod assembly and a counterweight assembly, a base is arranged at the bottom of the support, the top of the swing arm is rotatably connected with the top of the support, the connecting rod assembly comprises a first connecting rod and a second connecting rod, a connecting rod seat is arranged in the middle of one side of the swing arm, and the connecting rod seat is connected with the first connecting rod. One end of the first connecting rod is rotationally connected with the connecting rod seat, the other end of the first connecting rod is provided with a hanging piece device, one end of the second connecting rod is rotationally connected with the top of the support, and the other end of the second connecting rod is rotationally connected with the middle of the first connecting rod; one end of the first installation frame is fixedly connected with the top of the movable arm, and the balancing weight is installed at the other end of the first installation frame. According to the utility model, in the moving process of the movable arm, the force which needs to be applied to the movable arm by a body builder is almost not changed, so that the good body building effect of the body building equipment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to a force-adding device for the boom linkage of fitness equipment. Background Technology

[0002] As people pay increasing attention to their health, more and more people are joining the fitness movement. Fitness equipment is essential when exercising in gyms or at home. This equipment provides resistance, helping users push their strength limits to achieve muscle building or body sculpting. Many modern fitness machines use pulling or pushing mechanisms to exercise muscles such as the arms, back, and shoulders. These machines typically have one or two movable arms, with a weight at one end. To exercise, users push the other end of the arm, causing it to rotate on the machine. The drawback of this type of machine is that the force required to rotate the arm decreases as it rotates, resulting in less than ideal training effectiveness. Utility Model Content

[0003] The purpose of this invention is to provide a force-adding device for the moving arm linkage of fitness equipment, which ensures that the force applied to the moving arm by the exerciser remains almost unchanged during the movement of the moving arm, thereby ensuring the good fitness effect of the fitness equipment.

[0004] To achieve the above and other related objectives, this utility model provides a force-adding device for a fitness equipment's movable arm linkage, comprising: a support, a movable arm, a linkage assembly, and a counterweight assembly. The support has a base at its bottom; the top of the movable arm is rotatably connected to the top of the support, and a handle is provided at the bottom of the movable arm; the linkage assembly includes a first linkage and a second linkage, a linkage seat is provided at the middle of the movable arm on the side away from the support, one end of the first linkage is rotatably connected to the linkage seat, and the other end of the first linkage has a hanging plate device for mounting barbell plates; one end of the second linkage is rotatably connected to the top of the support, and the other end of the second linkage is rotatably connected to the middle of the first linkage; the counterweight assembly includes a counterweight block and a first mounting bracket, one end of the first mounting bracket is fixedly connected to the top of the movable arm on the side away from the support, and the counterweight block is mounted on the other end of the first mounting bracket, located above the side of the support away from the movable arm.

[0005] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, a wing plate is provided on each side of the bottom of the support, and the two wing plates are fixedly connected to the base by bolts.

[0006] In one example of the arm linkage force-adding device for fitness equipment of this utility model, the support includes a first support plate, a second support plate, a third support plate, a fourth support plate, and a fifth support plate. The bottom of the first support plate is fixedly connected to the base. The two ends of the second support plate are respectively fixedly connected to the top of the first support plate and the bottom of the third support plate. The two ends of the fourth support plate are respectively fixedly connected to the top of the third support plate and the bottom of the fifth support plate. The second support plate and the fourth support plate are located in the vertical direction, and the fourth support plate is located above the second support plate. The third support plate is located above the first support plate, and the fifth support plate is located above the third support plate.

[0007] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, the acute angle formed by the first support plate and the base is 50-60°, the first support plate and the third support plate are symmetrically arranged at both ends of the second support plate, the obtuse angle formed by the second support plate and the third support plate is 140-150°, and the obtuse angle formed by the fourth support plate and the fifth support plate is 150-160°.

[0008] In one example of the arm linkage force-adding device for fitness equipment of this utility model, the arm includes a first arm plate, a second arm plate, and a third arm plate. The two ends of the second arm plate are fixedly connected to the top end of the first arm plate and the bottom end of the third arm plate, respectively. The top end of the third arm plate is rotatably connected to the top end of the fifth support plate. The first arm plate, the second arm plate, and the third arm plate cooperate with the third support plate, the fourth support plate, and the fifth support plate, respectively.

[0009] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, the top of the fifth support plate is provided with a first bearing bracket on one end facing the third moving arm plate. Two first bearings are rotatably mounted on the first bearing bracket. The top of the third moving arm plate is fixed to the two first bearings through a first bushing.

[0010] In one example of the motion arm linkage force-adding device of the fitness equipment of this utility model, the linkage seat is disposed on the top of the third support plate, and a bearing seat is provided on each of the two side walls of the linkage seat. A second bearing is provided on each of the two bearing seats. The end of the first linkage is connected to the two second bearings through a rotating shaft.

[0011] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, a first limiting plate is provided on the side of the linkage seat away from the third support plate, and the first limiting plate cooperates with the first linkage.

[0012] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, a first mounting rod is provided through the middle of the first connecting rod, the first mounting rod is fixedly connected to the first connecting rod, one end of the second connecting rod is rotatably connected to the end of the first mounting rod, and the other end of the second connecting rod is rotatably connected to one side plate of the first bearing bracket.

[0013] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, the bottom end of the fifth support plate is provided with a second limiting plate, the second limiting plate is provided with a second limiting hole, the second connecting rod passes through the second limiting hole, and the second limiting hole matches the range of motion of the second connecting rod.

[0014] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, the hanging plate device includes a hanging plate rod and a sleeve. The sleeve is fixedly installed at the end of the first connecting rod away from the connecting rod seat. The hanging plate rod passes through the sleeve and is fixedly connected by bolts. A protective plate is sleeved on the end of the sleeve facing the hanging plate rod.

[0015] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, one end of the first mounting frame is fixedly connected to the surface of the third moving arm plate away from the fifth support plate, and the other end of the first mounting frame extends upward toward the fifth support plate. The counterweight includes a plurality of counterweight plates, and the plurality of counterweight plates are fixed to the end of the first mounting frame by two first bolts.

[0016] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, a pad is provided on the side of the third support plate facing the first moving arm plate, and the pad cooperates with the first moving arm plate.

[0017] In one example of the arm linkage force-adding device for fitness equipment of this utility model, an auxiliary handle is provided in the middle of the side wall of the first support plate.

[0018] This utility model relates to a force-adding device for a moving arm linkage on fitness equipment. The device is fixedly mounted on the equipment via a base. Users can attach weight plates of appropriate weight to the plate holder as needed. During exercise, the user holds the handle and pushes, causing the moving arm to rotate. The top of the moving arm rotates around the top of the support frame. During this movement, the end of the first link rotates around the link seat, while the two ends of the second link rotate around the middle of the first link and the top of the support frame, respectively. This changes the relative position of the plate holder on the moving arm, thereby altering the center of gravity. This ensures that the force applied to the moving arm by the user remains almost constant, thus guaranteeing the optimal fitness effect of the equipment. Attached Figure Description

[0019] Figure 1This is a perspective view of an embodiment of the force-adding device for the movable arm linkage of the fitness equipment of this utility model;

[0020] Figure 2 Side view of an embodiment of the arm linkage force-applying device for fitness equipment of this utility model. Figure 1 ;

[0021] Figure 3 Side view of an embodiment of the arm linkage force-applying device for fitness equipment of this utility model. Figure 2 ;

[0022] Figure 4 This is a partial structural schematic diagram of an embodiment of the force-adding device for the movable arm linkage of the fitness equipment of this utility model;

[0023] Figure 5 This is a schematic diagram of the hanging plate assembly in one embodiment of the arm linkage force-adding device for fitness equipment of this utility model.

[0024] Component designation:

[0025] 100. Bracket; 110. Base; 120. First bracket plate; 121. Auxiliary handle; 130. Second bracket plate; 140. Third bracket plate; 141. Pad; 150. Fourth bracket plate; 160. Fifth bracket plate; 161. First bearing bracket; 162. Second limiting plate; 163. Second limiting hole; 200. Boom; 210. First boom plate; 220. Second boom plate; 230. Third boom plate; 231. First shaft 300. Linkage assembly; 310. First link; 311. Rotating shaft; 312. First mounting rod; 320. Second link; 330. Linkage seat; 331. Bearing seat; 332. First limiting plate; 400. Counterweight assembly; 410. Counterweight block; 411. Counterweight plate; 412. First bolt; 420. First mounting bracket; 500. Hanging plate device; 510. Hanging plate rod; 520. Sleeve; 530. Protective plate; 600. Handle. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0027] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0028] Please see Figures 1 to 4 This utility model provides a force-adding device for a fitness equipment's movable arm linkage, comprising: a support 100, a movable arm 200, a linkage assembly 300, and a counterweight assembly 400. The support 100 has a base 110 at its bottom, and the top of the movable arm 200 is rotatably connected to the top of the support 100. The bottom of the movable arm 200 has a handle 600. The linkage assembly 300 includes a first linkage 310 and a second linkage 320. A linkage seat 330 is provided in the middle of the side of the movable arm 200 away from the support 100. One end of the first linkage 310 is rotatably connected to the linkage seat 330, and the other end of the first linkage 310 is provided with a hanging plate device 500 for mounting barbell plates. One end of the second linkage 320 is rotatably connected to the top of the support 100, and the other end of the second linkage 320 is rotatably connected to the middle of the first linkage 310. The counterweight assembly 400 includes a counterweight block 410 and a first mounting bracket 420. One end of the first mounting bracket 420 is fixedly connected to the top of the boom 200 on the side away from the support 100. The counterweight block 410 is mounted on the other end of the first mounting bracket 420. The counterweight block 410 is located above the support 100 on the side away from the boom 200.

[0029] This utility model is fixedly installed on fitness equipment via a base 110. Users can install weight plates of appropriate weight on the plate mounting device 500 according to their needs. During exercise, users need to hold the handle 600 and push it forcefully. The handle 600 will drive the movable arm 200 to move, causing the top of the movable arm 200 to rotate around the top of the support 100. During the movement of the movable arm 200, the end of the first connecting rod 310 will rotate around the connecting rod seat 330, and the two ends of the second connecting rod 320 will rotate around the middle of the first connecting rod 310 and the top of the support 100, respectively. This changes the relative position of the plate mounting device 500 on the movable arm 200, thereby changing the center of gravity of the movable arm 200. This ensures that the force applied by the user to the movable arm 200 remains almost unchanged, thus guaranteeing the good fitness effect of the fitness equipment.

[0030] In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, a wing plate is provided on each side of the bottom of the support 100, and the two wing plates are respectively fixedly connected to the base 110 by bolts.

[0031] Please see Figure 2 and Figure 3 In one example of the arm linkage force-adding device for fitness equipment of this utility model, the support 100 includes a first support plate 120, a second support plate 130, a third support plate 140, a fourth support plate 150, and a fifth support plate 160. The bottom of the first support plate 120 is fixedly connected to the base 110. The two ends of the second support plate 130 are fixedly connected to the top of the first support plate 120 and the bottom of the third support plate 140, respectively. The two ends of the fourth support plate 150 are fixedly connected to the top of the third support plate 140 and the bottom of the fifth support plate 160, respectively. The second support plate 130 and the fourth support plate 150 are located in the vertical direction, and the fourth support plate 150 is located above the second support plate 130. The third support plate 140 is located above the first support plate 120, and the fifth support plate 160 is located above the third support plate 140. The acute angle formed by the first support plate 120 and the base 110 is 50-60°. The first support plate 120 and the third support plate 140 are symmetrically arranged at both ends of the second support plate 130. The obtuse angle formed by the second support plate 130 and the third support plate 140 is 140-150°. The obtuse angle formed by the fourth support plate 150 and the fifth support plate 160 is 150-160°.

[0032] Please see Figures 2 to 4In one example of the arm linkage force-adding device for fitness equipment of this utility model, the arm 200 includes a first arm plate 210, a second arm plate 220, and a third arm plate 230. The two ends of the second arm plate 220 are fixedly connected to the top end of the first arm plate 210 and the bottom end of the third arm plate 230, respectively. The top end of the third arm plate 230 is rotatably connected to the top end of the fifth support plate 160. The first arm plate 210, the second arm plate 220, and the third arm plate 230 cooperate with the third support plate 140, the fourth support plate 150, and the fifth support plate 160, respectively. The top of the fifth support plate 160 has two first bearing brackets 161 on both sides facing the third arm plate 230. Two first bearings are rotatably mounted on the first bearing brackets 161. The top end of the third arm plate 230 is fixedly mounted to the two first bearings via a first bushing 231. The connecting rod seat 330 is disposed on the top of the third support plate 140. A bearing seat 331 is provided on each of the two side walls of the connecting rod seat 330, and a second bearing is provided on each of the two bearing seats 331. The end of the first connecting rod 310 is connected to the two second bearings via a rotating shaft 311. A first limiting plate 332 is provided on the side of the connecting rod seat 330 away from the third support plate 140. The first limiting plate 332 cooperates with the first connecting rod 310. The first limiting plate 332 is used to limit the movement of the first connecting rod 310, providing protection and preventing excessive movement of the first connecting rod 310.

[0033] Please see Figure 4 In one example of the arm linkage force-adding device of this utility model fitness equipment, a first mounting rod 312 passes through the middle of the first connecting rod 310. The first mounting rod 312 is fixedly connected to the first connecting rod 310. One end of the second connecting rod 320 is rotatably connected to the end of the first mounting rod 312, and the other end of the second connecting rod 320 is rotatably connected to one side plate of the first bearing bracket 161. A second limiting plate 162 is provided at the bottom of the fifth support plate 160. A second limiting hole 163 is provided on the second limiting plate 162. The second connecting rod 320 passes through the second limiting hole 163, and the second limiting hole 163 matches the range of motion of the second connecting rod 320. The second limiting hole 163 is used to limit the range of motion of the second connecting rod 320 to prevent the second connecting rod 320 from over-running. The second limiting plate 163 can also protect the second connecting rod 320.

[0034] Please see Figure 5In one example of the arm linkage force-adding device of this utility model fitness equipment, the hanging plate device 500 includes a hanging plate rod 510 and a sleeve 520. The sleeve 520 is fixedly installed at the end of the first connecting rod 310 away from the connecting rod seat 330. The hanging plate rod 510 passes through the sleeve 520 and is fixedly connected by bolts. A protective plate 530 is sleeved on the end of the sleeve 520 facing the hanging plate rod 510. The hanging plate rod 510 is used to hang barbell plates. After the barbell plates are hung, they are fixed by fastening accessories, such as fastening nuts. The fastening accessories are not shown in the attached drawings. It should be noted that the above method of installing and fixing barbell plates is prior art and will not be described in detail here.

[0035] Please refer to 4. In one example of the force-adding device for the moving arm linkage of the fitness equipment of this utility model, one end of the first mounting bracket 420 is fixedly connected to the surface of the third moving arm plate 230 away from the fifth support plate 160, and the other end of the first mounting bracket 420 extends upward toward the fifth support plate 160. The counterweight block 410 includes a plurality of counterweight plates 411, and the plurality of counterweight plates 411 are fixed to the end of the first mounting bracket 420 by two first bolts 412.

[0036] Please see Figure 1 and Figure 2 In one example of the arm linkage force-adding device for fitness equipment of this utility model, a pad 141 is provided on the side of the third support plate 140 facing the first arm plate 210, and the pad 141 cooperates with the first arm plate 210. An auxiliary handle 121 is provided in the middle of the side wall of the first support plate 120. The pad 141 has a buffering and protective function, and the auxiliary handle 121 is used for the auxiliary installation of the support 100.

[0037] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A power arm linkage force adding device for a fitness equipment, characterized in that, The utility model provides a barbell, including: Support, the bottom of support is equipped with base; Moving arm, the top of moving arm is rotatoryly connected with the top of support, the bottom of moving arm is equipped with handle; Connecting rod assembly, connecting rod assembly includes first connecting rod and second connecting rod, the middle part of moving arm is equipped with connecting rod seat far from the side of support, one end of first connecting rod is rotatoryly connected with connecting rod seat, the other end of first connecting rod is equipped with hanging piece device, hanging piece device is used to install barbell piece, one end of second connecting rod is rotatoryly connected with the top of support, the other end of second connecting rod is rotatoryly connected with the middle part of first connecting rod; Counterweight assembly, counterweight assembly includes counterweight and first mounting frame, one end of first mounting frame is fixedly connected with the top of moving arm far from the side of support, counterweight is installed in the other end of first mounting frame, and counterweight is located above the side of support far from moving arm.

2. The exercise machine arm link force enhancing device as claimed in claim 1, wherein, Support includes first support plate, second support plate, third support plate, fourth support plate and fifth support plate, the bottom of first support plate is fixedly connected with base, the top end of first support plate and the bottom end of third support plate are fixedly connected with the both ends of second support plate respectively, the top end of third support plate and the bottom end of fifth support plate are fixedly connected with the both ends of fourth support plate respectively, second support plate and fourth support plate are located in vertical direction, and fourth support plate is located on the upside of second support plate, third support plate is located above first support plate, and fifth support plate is located above third support plate.

3. The exercise machine arm linkage force enhancement device of claim 2 wherein, The acute angle formed by first support plate and base is 50-60 DEG, first support plate and third support plate are symmetrically arranged at the both ends of second support plate, the obtuse angle formed by second support plate and third support plate is 140-150 DEG, and the obtuse angle formed by fourth support plate and fifth support plate is 150-160 DEG.

4. The exercise machine arm linkage force enhancing device of claim 2 wherein, Moving arm includes first moving arm plate, second moving arm plate and third moving arm plate, the top end of first moving arm plate and the bottom end of third moving arm plate are fixedly connected with the both ends of second moving arm plate respectively, the top end of third moving arm plate is rotatoryly connected with the top end of fifth support plate, and first moving arm plate, second moving arm plate and third moving arm plate are matched with third support plate, fourth support plate and fifth support plate respectively.

5. The exercise machine arm linkage force enhancement device of claim 4 wherein, The both sides of the top of fifth support plate are equipped with first bearing frame towards one end of third moving arm plate, two first bearings are rotatoryly installed on first bearing frame, and the top end of third moving arm plate is fixedly installed with two first bearings through first shaft sleeve.

6. The exercise machine arm linkage force enhancement device of claim 5 wherein, Connecting rod seat is arranged on the top of third support plate, one bearing seat is arranged on the both side walls of connecting rod seat respectively, one second bearing is arranged on two bearing seats respectively, the end of first connecting rod is installed and connected with two second bearings through pivot, and first limiting plate is arranged on the side of connecting rod seat far from third support plate, and first limiting plate is matched with first connecting rod.

7. The exercise machine arm linkage force enhancement device of claim 5 wherein, The middle part of the first connecting rod is provided with a first mounting rod, the first mounting rod is fixedly connected with the first connecting rod, one end of the second connecting rod is rotatably connected with the end of the first mounting rod, and the other end of the second connecting rod is rotatably connected with one side plate of the first bearing frame.

8. The exercise machine linkage force enhancement device of claim 2 wherein, The bottom end of the fifth support plate is provided with a second limiting plate, the second limiting plate is provided with a second limiting hole, the second connecting rod is arranged in the second limiting hole, and the second limiting hole is matched with the movement range of the second connecting rod.

9. The exercise machine linkage force enhancement device of claim 2 wherein, The hanging piece device comprises a hanging piece rod and a sleeve, the sleeve is fixedly installed at one end of the first connecting rod away from the connecting rod base, the hanging piece rod is arranged in the sleeve and fixedly connected through bolts, and the end of the sleeve towards the hanging piece rod is provided with a protective plate.

10. The exercise machine linkage force enhancement device of claim 4 wherein, One end of the first mounting frame is fixedly connected with the surface of the third movable arm plate away from the fifth support plate, the other end of the first mounting frame extends upwards of the fifth support plate, and the counterweight comprises a plurality of counterweight plates, and the plurality of counterweight plates are fixedly arranged at the end of the first mounting frame through two first bolts.

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