Bench press training equipment

Abstract

The present application relates to the field of training equipment, and in particular to a bench press training equipment, which includes a base, a first support column is vertically arranged on the base, a second support column is vertically arranged on the other side of the base, a bracket is arranged between the first support column and the second support column, the bracket is hinged to the first support column, a rotation limit mechanism for limiting the rotation angle of the bracket is arranged between the bracket and the first support column, the other end of the bracket is movably mounted on the second support column and a pushing mechanism for pushing the bracket is arranged, and a support plate for users to lie on is arranged below the pushing mechanism. The present application has the effect of being suitable for high-intensity training.

Description

Technical Field

[0001] The present application relates to the field of training equipment, and in particular to a bench press training equipment. Background Art

[0002] At present, with the improvement of living standards, people's requirements for physical fitness are also constantly increasing. Among them, physical training through training equipment has become one of the main ways. Training equipment is a sports equipment used by people with training needs to achieve the effect of auxiliary training and physical fitness.

[0003] Common daily training equipment such as treadmills and butterfly chest expanders all include a fixed end and a movable end connected to the fixed end. The movable end is driven by the user, and the movable end can be hinged to the fixed end to achieve reciprocating motion of the movable end to achieve the effect of muscle training.

[0004] Regarding the above-mentioned related technologies, the inventor believes that there is a defect that the movable end and the fixed end of the training equipment are hinged and generally more flexible, that is, the user can easily drive the movable end to move, but if high-intensity training is required, such as for military training, it cannot effectively achieve the training goals. Summary of the invention

[0005] In order to make the equipment suitable for training with higher intensity requirements, the present application provides a bench press training equipment.

[0006] The bench press training device provided in this application adopts the following technical solution:

[0007] A bench press training device comprises a base, a first support column is vertically arranged on the base, a second support column is vertically arranged on the other side of the base, a bracket is arranged between the first support column and the second support column, the bracket is hinged to the first support column, a rotation limiting mechanism for limiting the rotation angle of the bracket is arranged between the bracket and the first support column, the other end of the bracket is movably mounted on the second support column and is provided with a pushing mechanism for pushing the bracket, and a support plate for a user to lie on is arranged below the pushing mechanism.

[0008] By adopting the above technical solution, the user lies on the support board and lifts the pushing mechanism upwards, and the pushing mechanism drives the bracket to move up and down. At the same time, the bracket limits its own rotation angle through the rotation limit mechanism, so that the user's range of movement when lifting the pushing mechanism is limited, which makes it easier for the user to apply more thrust, thereby improving the training effect.

[0009] Preferably, two ear plates arranged opposite to each other are vertically fixed on the first support column, an outer sleeve which is fixed to one end of the bracket close to the first support column and is clamped and fitted between the two ear plates, an inner sleeve is coaxially arranged inside the outer sleeve, a plurality of connecting plates are evenly fixed between the outer sleeve and the inner sleeve, a limit block made of elastic material is fixed on the connecting plate, a space is left between two adjacent limit blocks, first clearance holes corresponding to the inner sleeve and second clearance holes corresponding to the number of the limit blocks are respectively opened on the two ear plates, a rotating shaft rotatably supported in the two first clearance holes is passed through the inner sleeve, and a limit shaft connected to the two second clearance holes arranged opposite to each other is passed through the space between the two adjacent limit blocks.

[0010] By adopting the above technical solution, the bracket rotates around the rotating shaft, and the space limit axis between two adjacent limit blocks moves, so that the rotation angle of the bracket is within a range. The limit blocks are made of elastic material, so that the limit blocks play a shock-absorbing and buffering role.

[0011] Preferably, the limit block is adapted to the gap between the outer sleeve and the inner sleeve, a clamping groove for the connecting plate to be clamped is provided on the limit block, and grooves adapted to the circumferential surface of the limit shaft are respectively provided at both ends of the limit block along its own axial direction.

[0012] By adopting the above technical solution, a snap-in groove is provided on the limit block, which facilitates the installation of the limit block on the connecting plate. The groove is adapted to the circumferential surface of the limit shaft, which facilitates uniform force on the limit block and helps to increase the service life of the limit block.

[0013] Preferably, a bearing is embedded in the inner sleeve, the outer ring of the bearing is interference fit with the inner sleeve, and the inner ring of the bearing is interference fit with the rotating shaft.

[0014] By adopting the above technical solution, the bearing can replace the rotating shaft to directly contact the inner sleeve, thereby preventing the rotating shaft from being worn by the inner sleeve, which is beneficial to increasing the service life of the rotating shaft.

[0015] Preferably, the limiting block protrudes out of the outer sleeve and is elastically pressed on the ear plate.

[0016] By adopting the above technical solution, the limit block is elastically squeezed on the ear plate, so that there is a certain friction resistance between the limit block and the ear plate. When the user pushes up the pushing mechanism, the friction resistance acts on the bracket, making the bracket difficult to rotate, thereby improving the training intensity.

[0017] Preferably, the bracket includes an extension beam fixed to the outer sleeve and a lifting beam fixed to one end of the extension beam away from the first support column, the lifting beam is movably mounted on the second support column, a counterweight mechanism is arranged on the extension beam, the counterweight mechanism includes a slide rail arranged along the length direction of the extension beam, a counterweight block is arranged on the slide rail, a slider slidably connected to the slide rail is fixed to the counterweight block, and a limiting mechanism for limiting the sliding position of the slider on the slide rail is arranged on the counterweight block.

[0018] By adopting the above technical solution, the user can independently select the training intensity and change the torque by changing the position of the counterweight, so that the user can experience different pulling strengths.

[0019] Preferably, a chamber is provided in the counterweight block, and the limiting mechanism includes a limiting rod arranged in the chamber and slidably connected to the counterweight block in the direction of the slide rail, the upper and lower ends of the limiting rod respectively penetrate the upper and lower inner walls of the counterweight block, a sealing plate for sealing the chamber is fixedly connected to the upper surface of the counterweight block, the limiting rod is penetrated through the sealing plate and slidably connected to the sealing plate, a limiting plate is fixedly connected to the circumferential surface of the limiting rod, the limiting plate is located in the chamber of the counterweight block, a compression spring is also sleeved on the limiting rod, the compression spring is located between the limiting plate and the sealing plate, and a number of sockets for accommodating the insertion of the lower end of the limiting rod are evenly opened on the upper surface of the slide rail along the length direction of the slide rail.

[0020] By adopting the above technical solution, when the user slides the counterweight block, he first grabs the end of the limit rod and lifts the limit rod, thereby causing the limit plate to move toward the closing plate and elastically compressing the compression spring. When the lower end of the limit rod moves to a position corresponding to the insertion hole, the lower end of the limit rod is stably inserted in the insertion hole under the elastic action of the compression spring, thereby limiting the mutual sliding of the slider and the slide rail, so that the slider can be stably maintained at the position corresponding to the slide rail during the lifting process of the bracket.

[0021] Preferably, the limiting mechanism includes a rack fixed on the slide rail along the length direction of the slide rail, an installation cavity is opened in the slide rail, a rotating shaft is arranged in the installation cavity, a driven gear is coaxially fixed on the rotating shaft, a connecting groove for making the driven gear and the rack mesh with each other is opened on one side of the installation cavity, a limiting groove for accommodating the rotating shaft is opened on the lower surface of the installation cavity, a supporting spring for supporting the rotating shaft is arranged in the limiting groove, a plurality of limiting protrusions are fixed on the side of the driven gear facing the limiting groove, a matching groove for accommodating the limiting protrusion is opened on the bottom wall of the installation groove, and a driving mechanism for driving the rotating shaft to move into the limiting groove and making the limiting protrusion and the matching groove mutually engaged is arranged in the counterweight block, when the limiting protrusion and the matching groove are mutually engaged, the driven gear and the rack remain in a meshing state.

[0022] By adopting the above technical scheme, when the counterweight block and the slide rail slide against each other, the driven gear and the rack will be meshed with each other. If the user wants to position the counterweight block at the position of the slide rail, the driving mechanism can be used to press down the rotating shaft, so that the supporting spring can be elastically expanded and contracted, and the side of the driven gear facing the bottom wall of the mounting cavity is in contact with the bottom wall of the mounting cavity, and the limiting protrusion on the driven gear is matched with the matching groove of the bottom wall of the mounting cavity, thereby limiting the free rotation of the driven gear. Although the driven gear moves a certain distance when the limiting protrusion and the matching groove cooperate with each other, the rack and the driven gear are still meshed with each other, and the inability of the driven gear to rotate also limits the continuous sliding of the slider and the slide rail.

[0023] Preferably, the driving mechanism includes a rotating roller rotatably connected to the counterweight block, the axis of the rotating roller and the axis of the limiting rod are perpendicular to each other, the upper end of the limiting rod is always in contact with the outer circumference of the rotating roller, and a section is provided on the outer circumference of the rotating roller along the axial direction of the rotating roller to accommodate the upper end of the rotating shaft so that the supporting spring maintains a natural state, and a driving component is provided at one end of the rotating roller to drive the rotating roller to rotate.

[0024] By adopting the above technical scheme, in the initial state, the upper end of the rotating shaft is located in the cross-section of the rotating roller. When the counterweight block moves to the position where it needs to be fixed, the user drives the rotating roller to rotate through the driving component, so that the upper end of the rotating shaft is guided by the inner wall of the cross-section and abuts against the outer peripheral surface of the rotating roller, thereby driving the rotating shaft to move in the direction of the limiting groove, thereby realizing the mutual alignment of the limiting protrusion and the matching groove; and the rotating roller is arranged in the counterweight block and has a certain weight itself. Not only does it not reduce the overall weight of the counterweight block, but it also has a transmission function. The structure is simple, which greatly improves the user's operation efficiency.

[0025] Preferably, the driving assembly includes a transmission gear coaxially arranged at one end of the rotating roller and a driving gear meshing with the transmission gear, a turntable is fixedly connected to one side of the driving gear, the turntable is rotatably connected to the counterweight block, and a handle is fixedly connected to the side of the turntable away from the driving gear.

[0026] By adopting the above technical solution, when the user moves the counterweight block, he can move the counterweight block by supporting it with the handle. Then, when positioning the counterweight block, the handle can be used to drive the turntable to rotate, and the meshing transmission of the driving gear and the transmission gear can be used to drive the rotating roller to rotate. The structure is simple, the operation efficiency is high, and it is easy to maintain.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By setting a first support column, a second support column, a bracket, a pushing mechanism, a rotation limiting mechanism and a support plate, the user lies on the support plate and lifts the pushing mechanism upward, the pushing mechanism drives the bracket to move up and down, and at the same time the bracket limits its own rotation angle through the rotation limiting mechanism, so that the user's range of motion when lifting the pushing mechanism is limited, which is convenient for the user to apply more thrust, thereby improving the training effect;

[0029] 2. By setting the counterweight mechanism and the limit mechanism, the user can choose the training intensity independently. By changing the position of the counterweight block, the torque is changed, allowing the user to experience different tensile strengths;

[0030] 3. By setting the driving mechanism and driving assembly, the user can more conveniently operate and limit the position of the counterweight mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the bench press training device of Example 1 of the present application;

[0032] Figure 2 This is an exploded view of the embodiment 1 of the present application for illustrating the rotation limiting mechanism;

[0033] Figure 3 This is a schematic diagram of Example 1 of the present application for illustrating the matching relationship between the limit rod and the limit block;

[0034] Figure 4 It is a schematic diagram of the structure of the limit block of Example 1 of the present application;

[0035] Figure 5 is a structural schematic diagram of the counterweight mechanism of Example 1 of the present application;

[0036] Figure 6 is a cross-sectional view of the counterweight mechanism of Example 1 of the present application;

[0037] Figure 7 is a structural schematic diagram of the counterweight mechanism of Example 2 of the present application;

[0038] Figure 8 It is a schematic diagram of the internal structure of the slider installation cavity in Example 2 of the present application;

[0039] Fig. 9 is a schematic diagram of the positional relationship between the driving mechanism and the rotating shaft according to Embodiment 2 of the present application;

[0040] Fig.10 yes Fig. 9 The enlarged detail of point A in the middle shows the positioning structure between the driven gear and the bottom wall of the mounting cavity;

[0041] Fig.11 Schematic diagram of the locking relationship between the limiting protrusion and the matching groove in Example 2 of the present application;

[0042] Fig.12 This is a schematic diagram of the structure inside the housing of Example 2 of the present application;

[0043] Explanation of the reference numerals: 1. base; 10. first support column; 100. ear plate; 1000. first clearance hole; 1001. second clearance hole; 11. second support column; 110. buffer pad; 12. reinforcing beam; 2. bracket; 20. extension beam; 21. lifting beam; 3. pushing mechanism; 30. connecting rod; 31. gripping rod; 32. protective sleeve; 4. rotation limiting mechanism; 40. outer sleeve; 41. connecting plate; 42. inner sleeve; 43. limiting block; 430. clamping groove; 431. groove; 44. bearing; 45. limiting shaft; 46. limiting ring; 47. rotating shaft; 48. first protective cover; 49. second protective cover; 490. clearance groove; 491. nut; 492. cover; 5. support plate; 50 , support leg; 6, counterweight mechanism; 60, slide rail; 600, socket; 61, slider; 610, installation cavity; 611, connecting groove; 612, limiting groove; 613, matching groove; 62, counterweight block; 620, shell; 621, counterweight unit; 622, yielding groove; 63, handrail; 64, anti-drop sheet; 65, chamber; 7, limiting mechanism; 70, limiting rod; 71, sealing plate; 72, limiting sheet; 73, compression spring; 74, mounting cap; 75, rack; 76, rotating shaft; 77, supporting spring; 78, driven gear; 79, limiting protrusion; 8, driving mechanism; 80, rotating roller; 800, section; 9, driving assembly; 90, transmission gear; 91, driving gear; 92, turntable; 93, handle. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-12 This application is described in further detail.

[0045] The embodiment of the present application discloses a bench press training device.

[0046] Example 1

[0047] Reference Figure 1 The bench press training device includes a base 1, on which a set of equipment use units are arranged. Of course, multiple sets can also be arranged according to actual conditions; the equipment use unit includes a first support column 10 vertically fixed to one end of the base 1 and a second support column 11 correspondingly fixed to the other end of the base 1, and two second support columns 11 are arranged in parallel.

[0048] A bracket 2 is arranged between the first support column 10 and the second support column 11, one end of the bracket 2 is mounted on the second support column 11, and a buffer pad 110 is fixedly connected to the top of the second support column 11. The buffer pad 110 is made of rubber material, so that the impact brought by the bracket 2 can be buffered and reduced by the buffer pad 110. The bracket 2 includes an extension beam 20 and a lifting beam 21. The extension beam 20 is vertically fixed to the lifting beam 21, and its fixing point is located at the center position of the lifting beam 21. Both ends of the lifting beam 21 are movably mounted on the second support column 11, and a pushing mechanism 3 for a user to push the bracket 2 is arranged on the side of the lifting beam 21 away from the extension beam 20. The pushing mechanism 3 includes a connecting rod 30 fixedly connected to the lifting beam 21. Two connecting rods 30 are provided and extend in a direction away from the extension beam 20. The two connecting rods 30 are in an eight-shaped opening. A grip rod 31 is fixedly connected to each side of the two connecting rods 30, and a protective cover 32 is sleeved on the grip rod 31.

[0049] An ear plate 100 is vertically fixedly connected to both sides of the top of the first support column 10; a rotation limiting mechanism 4 is connected between the ear plate 100 and the extension beam 20, and the rotation limiting mechanism 4 is used to realize the up and down rotation of the extension beam 20 relative to the ear plate 100, and the rotation limit mechanism 4 is used to limit the rotation stroke of the extension beam 20; a reinforcing beam 12 is also fixedly connected between the two second support columns 11, and a support plate 5 for the user to lie on is provided below the pushing mechanism 3, and one end of the support plate 5 is placed on the reinforcing beam 12. In other examples, the support plate 5 and the reinforcing beam 12 can also be welded and fixed, and a support leg 50 is vertically fixedly connected to the bottom of the other end of the support plate 5, so as to achieve stable support of the support plate 5.

[0050] Specific reference Figure 2 and Figure 3 The rotation limiting mechanism 4 includes an outer sleeve 40 fixedly connected to one end of the extension beam 20. The outer sleeve 40 is a cylindrical structure with openings at both ends. The axial direction of the outer sleeve 40 is perpendicular to the axial direction of the extension beam 20. Three connecting plates 41 are evenly fixedly connected on the inner wall of the outer sleeve 40 toward the axial core direction of the outer sleeve 40. The connecting plates 41 are parallel to the axial direction of the outer sleeve 40. The same inner sleeve 42 is fixedly connected to one end of the three connecting plates 41 away from the outer sleeve 40. The inner sleeve 42 is a cylindrical structure with openings at both ends and coincides with the axis of the outer sleeve 40. A limiting block 43 is respectively clamped at both ends of each connecting plate 41 along the axial direction of the outer sleeve 40. The limiting block 43 is an elastic block.

[0051] Reference Figure 2 and Figure 4The limit block 43 is in a trapezoidal block shape as a whole. The shape and size of the limit block 43 are adapted to the space between the outer sleeve 40 and the inner sleeve 42. The side of the limit block 43 protrudes from the outer sleeve 40, so that the limit block 43 is elastically squeezed on the ear plate 100. A clamping groove 430 for the connecting plate 41 to be clamped is provided on the limit block 43. Convex grooves 431 with arc-shaped cross-sections are respectively provided on both sides of the limit block 43, and a space is left between two adjacent limit blocks 43; a bearing 44 is embedded in the inner sleeve 42, and the outer ring of the bearing 44 is interference fit with the inner sleeve 42.

[0052] Refer again Figure 2 and Figure 3 A first clearance hole 1000 and three second clearance holes 1001 are respectively opened on the two ear plates 100, the first clearance hole 1000 is located in the center, and the three second clearance holes 1001 are evenly arranged around the first clearance hole 1000, and a limiting shaft 45 is respectively penetrated in the three second clearance holes 1001, and the limiting shaft 45 is penetrated in the space between two adjacent limiting blocks 43, so that the limiting shaft 45 has a certain range of movement, and the two ends of the limiting shaft 45 protrude two ear plates 100 on both sides, and the two ends of the same limiting shaft 45 are respectively sleeved with limiting rings 46 for limiting the axial movement of the limiting shaft 45, and the two limiting rings 46 are respectively located at the opposite sides of the two ear plates 100. On one side, a rotating shaft 47 is passed through the bearing 44, and the rotating shaft 47 is interference fit with the inner ring of the bearing 44. A first protective cover 48 is vertically fixed to one end of the rotating shaft 47, and the first protective cover 48 is arranged on the outside of an ear plate 100, and a second protective cover 49 is arranged on the outside of the other ear plate 100. A clearance groove 490 is arranged at the center position of the second protective cover 49, and the rotating shaft 47 vertically passes through the clearance groove 490, and an external thread is arranged on the circumferential surface of the end of the rotating shaft 47, and a nut 491 is arranged in the clearance groove 490, and the nut 491 is threadedly connected to the rotating shaft 47, and a cover 492 is also installed on the clearance groove 490, and the nut 491 is closed in the clearance groove 490 by the cover 492.

[0053] When the extension beam 20 rotates vertically, the limit shaft 45 is only allowed to move in the space between two adjacent limit blocks 43. At the same time, the limit blocks 43 have a certain elasticity and can be elastically deformed, so that the limit shaft 45 is in rigid contact, thereby improving the service life of the limit shaft 45.

[0054] Reference Figure 1 and Figure 5In order to make the training equipment suitable for users with different training intensity requirements, a counterweight mechanism 6 is also provided on the upper surface of each extension beam 20; the counterweight mechanism 6 includes a slide rail 60 fixedly connected to the upper surface of the extension beam 20 along the length direction of the extension beam 20, a slider 61 is slidably connected to the slide rail 60, a counterweight block 62 is fixedly connected to the upper surface of the slider 61, and a handrail 63 is fixedly connected to each side of the counterweight block 62 in the moving direction, so as to facilitate the control of the counterweight block 62 to slide on the slide rail 60, and a limiting mechanism 7 is also provided on the counterweight block 62 to fix the sliding position of the slider 61.

[0055] Reference Figure 5 and Figure 6 The counterweight block 62 has a cylindrical chamber 65, the axial direction of the chamber 65 is perpendicular to the axial direction of the slide rail 60, and the upper part of the chamber 65 is an opening; the limiting mechanism 7 includes a limiting rod 70 coaxially arranged in the chamber 65, the lower end of the limiting rod 70 penetrates the counterweight block 62 and points to the upper surface of the slide rail 60, and the upper end of the limiting rod 70 is higher than the upper surface of the counterweight block 62; the counterweight block 62 is located above the opening of the chamber 65 and is provided with an annular sealing plate 71, which is fixed to the opening of the chamber 65 by a plurality of bolts At the edge of the opening, the upper end of the limit rod 70 passes through the sealing plate 71 and is slidably connected to the sealing plate 71; the circumferential surface of the limit rod 70 is also coaxially fixed with an annular limit plate 72, and the limit plate 72 is located in the chamber 65; the limit rod 70 is also sleeved with a compression spring 73, the upper end of the compression spring 73 abuts against the lower surface of the sealing plate 71, and the lower end of the compression spring 73 abuts against the upper surface of the limit rod 70; and the upper surface of the slide rail 60 is evenly provided with a plurality of sockets 600 for accommodating the lower end of the limit rod 70 along the length direction of the slide rail 60.

[0056] The upper end of the limiting rod 70 is also threadedly connected with a mounting cap 74 , and the longitudinal section of the mounting cap 74 is T-shaped, thereby increasing the gripping area of ​​the hand and the limiting rod 70 and improving the convenience of operating the limiting rod 70 .

[0057] Reference Figure 5 Anti-slipping plates 64 are also provided at both ends of each slide rail 60. The anti-slipping plates 64 are fixed to the upper surface of the extension beam 20, and the size of the anti-slipping plates 64 is larger than the cross-sectional size of the slide rail 60, thereby limiting the separation of the slider 61 from the end of the slide rail 60 and improving the safety of the training equipment during use.

[0058] The implementation principle of Example 1 is as follows: the user lies on the support plate 5, holds the grip bar 31 with both hands, and then pushes the grip bar 31 upward. Under the limiting action of the rotation limit mechanism 4, the extension beam 20 can be rotated upward by a certain angle, and then cannot continue to rotate due to the limiting action of the limit block 43, thereby providing resistance through the limit block 43 to increase the pushing difficulty of the pushing mechanism 3. At the same time, since the limit block 43 protrudes a part of the outer sleeve 40, the limit block 43 is elastically squeezed on the ear plate 100, which increases the rotation resistance of the extension beam 20, thereby increasing the training difficulty; when the user needs to further increase the training intensity, the limit rod 70 can be pulled out of the socket 600 upward, and then the handrail 60 can be held to move the counterweight 62 to the side close to the lifting beam 21, and then the limit rod 70 is released so that the limit rod 70 is reinserted into the corresponding socket 600, thereby fixing the position of the counterweight 62, that is, changing the user's training intensity through torque.

[0059] Example 2

[0060] Reference Figure 7 and Figure 8 The difference between this embodiment and embodiment 1 is that the counterweight block 62 includes a housing 620 and a counterweight unit 621; Figure 8 and Fig. 9 The upper surface of the slider 61 has a mounting cavity 610 formed along the height direction of the slider 61 , and the mounting cavity 610 is formed at one side of the slide rail 60 .

[0061] Refer again Figure 7 and Figure 8 The limiting mechanism 7 includes a rack 75 fixed to the side of the slide rail 60 facing the installation cavity 610, and the length of the rack 75 is the same as the length of the slide rail 60; a connecting groove 611 for accommodating the rack 75 and communicating with the installation cavity 610 is provided on one side of the slider 61, so that when the slider 61 and the slide rail 60 slide against each other, the rack 75 will not interfere with the slider 61; a rotating shaft 76 is vertically provided in the installation cavity 610 along the height direction of the installation cavity 610, and a limiting groove for accommodating the lower end of the rotating shaft 76 is provided on the bottom surface of the installation cavity 610 The limiting groove 612 has a support spring 77 placed in it to support the rotating shaft 76; a driven gear 78 is coaxially fixed to the rotating shaft 76. In the initial state, the rotating shaft 76 is supported by the support spring 77 so that a gap is left between the driven gear 78 and the bottom surface of the mounting cavity 610, and the driven gear 78 is meshed with the rack 75; when the slider 61 and the slide rail 60 slide against each other, the driven gear 78 is driven to rotate freely around the axis of the rotating shaft 76 through the mutual meshing of the rack 75 and the driven gear 78.

[0062] Reference Fig. 9 and Fig.10Six hemispherical limiting protrusions 79 are evenly fixed to the lower surface of the driven gear 78 with the center of the driven gear 78 as the center of the circle, and matching grooves 613 for accommodating the limiting protrusions 79 are opened at positions corresponding to the six limiting protrusions 79 on the bottom surface of the installation cavity 610, and a driving mechanism 8 is also provided in the counterweight block 62 to drive the rotating shaft 76 to move downward so that the limiting protrusions 79 are inserted into the corresponding matching grooves 613 to limit the rotation of the driven gear 78; refer to Fig.10 and Fig.11 It can be seen that the matching state between the limiting protrusion 79 and the matching groove 613 is known.

[0063] Reference Fig. 9 and Fig.10 The counterweight block 62 includes a shell 620 and a counterweight unit 621 inserted into the shell 620; the upper end of the rotating shaft 76 penetrates into the shell 620 and is slidably connected to the shell 620; the driving mechanism 8 includes a rotating roller 80 arranged in the shell 620 and rotatably connected to the inner wall of the shell 620, the rotating roller 80 is located directly above the rotating shaft 76, and the upper end surface of the rotating shaft 76 is always in contact with the outer peripheral surface of the rotating roller 80, and the extension line of the axis of the rotating shaft 76 is perpendicular to and interferes with the axis of the rotating roller 80; the circumferential surface of the rotating roller 80 is provided with a cut surface 800 along the length direction of the rotating roller 80, thereby reducing the local radius of the rotating roller 80, and when the rotating shaft 76 is in the initial state, the upper end of the rotating shaft 76 is against the cut surface 800 area of ​​the rotating roller 80, so that the support spring 77 is in a natural state.

[0064] Reference Figure 7 and Fig.12 A driving assembly 9 for driving the rotating roller 80 to rotate is also provided at one end of the rotating roller 80; the driving assembly 9 includes a transmission gear 90 coaxially fixed to one end of the rotating roller 80, a driving gear 91 meshing with the transmission gear 90 is rotatably connected to the side wall of the housing 620 against which the transmission gear 90 is abutted, a turntable 92 coaxially fixed to the driving gear 91 is provided on the outer wall of the housing 620, and the turntable 92 is rotatably connected to the outer wall of the housing 620; a handle 93 is also fixed to the side of the turntable 92 away from the driving gear 91, so that the user can drive the turntable 92 to rotate through the handle 93, and the meshing transmission of the driving gear 91 and the transmission gear 90 can realize the rotation of the rotating roller 80.

[0065] Reference Fig. 9 A clearance groove 622 is provided on the lower surface of the counterweight unit 621 at the position where the counterweight unit 621 interferes with the rotating roller 80 and the driving assembly 9, so that after the counterweight unit 621 and the shell 620 are plugged into each other, it will not affect the normal operation of the driving mechanism 8. Moreover, the user can also maintain the driving mechanism 8 by disassembling the counterweight unit 621, thereby improving the maintenance efficiency.

[0066] The implementation principle of Example 2 is as follows: when the user uses the counterweight 62, the user can hold the handle 93 and drive the counterweight 62 to slide on the slide rail 60. At this time, the driven gear 78 rotates freely in the installation cavity 610 under the mutual meshing with the rack 75. When the user needs to fix the relative position of the sliding block 61 and the slide rail 60, the user can rotate the handle 93 to drive the turntable 92 to rotate, and drive the rotating roller 80 to rotate through the mutual meshing of the driving gear 91 and the transmission gear 90; when the rotating shaft 76 is in the initial state, the upper end of the rotating shaft 76 is located at the section 800 of the rotating roller 80, and as the rotating roller 80 rotates, the rotating roller 80 rotates. The rotation of 80 causes the rotating shaft 76 to move toward the bottom of the limiting groove 612 under the limitation of the limiting groove 612, and drives the supporting spring 77 to be elastically compressed. At the same time, the limiting protrusion 79 on the lower surface of the driven gear 78 will be stuck in the corresponding matching groove 613, thereby limiting the free rotation of the driven gear 78. At this time, the driven gear 78 also maintains a state of mutual engagement with the rack 75, thereby also limiting the relative sliding of the slider 61 and the slide rail 60. The user only needs to operate the handle 93 to achieve the fixation of the relative position of the counterweight block 62 on the slide rail 60. The operation is simple and the effect is significant.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bench press training device, characterized in that: The invention comprises a base (1), a first support column (10) is vertically arranged on the base (1), a second support column (11) is vertically arranged on the other side of the base (1), a bracket (2) is arranged between the first support column (10) and the second support column (11), the bracket (2) is hinged to the first support column (10), a rotation limiting mechanism (4) for limiting the rotation angle of the bracket (2) is arranged between the bracket (2) and the first support column (10), the other end of the bracket (2) is movably mounted on the second support column (11) and is provided with a pushing mechanism (3) for pushing the bracket (2), and a support plate (5) for a user to lie on is arranged below the pushing mechanism (3); Two ear plates (100) arranged opposite to each other are vertically fixedly connected to the first support column (10); an outer sleeve (40) which is clamped and fitted between the two ear plates (100) is fixedly connected to one end of the bracket (2) close to the first support column (10); an inner sleeve (42) is coaxially arranged inside the outer sleeve (40); a plurality of connecting plates (41) are evenly fixedly connected between the outer sleeve (40) and the inner sleeve (42); a limit block (43) made of elastic material is fixedly connected to the connecting plate (41); and a limit block (43) ... A space is reserved between the blocks (43), first clearance holes (1000) corresponding to the inner sleeve (42) and second clearance holes (1001) corresponding to the number of the limiting blocks (43) are respectively opened on the two ear plates (100), a rotating shaft (47) rotatably supported in the two first clearance holes (1000) is passed through the inner sleeve (42), and a limiting shaft (45) connected to the two second clearance holes (1001) arranged oppositely is passed through the space between two adjacent limiting blocks (43); The limit block (43) is adapted to fit the gap between the outer sleeve (40) and the inner sleeve (42); a clamping groove (430) for clamping the connecting plate is provided on the limit block (43); and grooves (431) adapted to fit the circumferential surface of the limit shaft (45) are respectively provided at both ends of the limit block (43) along its own axial direction; A bearing (44) is embedded in the inner sleeve (42); the outer ring of the bearing (44) is interference fit with the inner sleeve (42); and the inner ring of the bearing (44) is interference fit with the rotating shaft (47).

2. The bench press training device according to claim 1, characterized in that: The limiting block (43) protrudes out of the outer sleeve (40) and is elastically pressed on the ear plate (100).

3. The bench press training apparatus according to claim 1, characterized in that: The bracket (2) comprises an extension beam (20) fixedly connected to the outer sleeve (40) and a lifting beam (21) fixedly connected to one end of the extension beam (20) away from the first support column (10); the lifting beam (21) is movably mounted on the second support column (11); a counterweight mechanism (6) is arranged on the extension beam (20); the counterweight mechanism (6) comprises a slide rail (60) arranged along the length direction of the extension beam (20); a counterweight block (62) is arranged on the slide rail (60); a slider (61) slidably connected to the slide rail (60) is fixedly connected to the counterweight block (62); and a limiting mechanism (7) is arranged on the counterweight block (62) for limiting the sliding position of the slider (61) on the slide rail (60).

4. The bench press training apparatus according to claim 3, characterized in that: The counterweight block (62) is provided with a chamber (65), and the limiting mechanism (7) comprises a limiting rod (70) which is arranged in the chamber (65) and is slidably connected to the counterweight block (62) in the direction of the slide rail (60), the upper and lower ends of the limiting rod (70) respectively penetrate the upper and lower inner walls of the counterweight block (62), a sealing plate (71) for sealing the chamber (65) is fixedly connected to the upper surface of the counterweight block (62), and the limiting rod (70) penetrates the sealing plate (71) and is connected to the sealing plate (71). ) is slidably connected, a limiting plate (72) is fixedly connected to the circumference of the limiting rod (70), the limiting plate (72) is located in the chamber (65) of the counterweight (62), a compression spring (73) is also sleeved on the limiting rod (70), the compression spring (73) is located between the limiting plate (72) and the sealing plate (71), and a plurality of insertion holes (600) for accommodating the lower end of the limiting rod (70) to be inserted are evenly opened on the upper surface of the slide rail (60) along the length direction of the slide rail (60).

5. The bench press training apparatus according to claim 3, characterized in that: The limiting mechanism (7) comprises a rack (75) fixed on the slide rail (60) along the length direction of the slide rail (60); a mounting cavity (610) is provided in the slide rail (60); a rotating shaft (76) is provided in the mounting cavity (610); a driven gear (78) is coaxially fixedly connected to the rotating shaft (76); a connecting groove (611) for enabling the driven gear (78) and the rack (75) to mesh with each other is provided on one side of the mounting cavity (610); a limiting groove (612) for accommodating the rotating shaft (76) is provided on the lower surface of the mounting cavity (610); a supporting member (612) is provided in the limiting groove (612) A support spring (77) supports the rotating shaft (76); a plurality of limiting protrusions (79) are fixedly connected to one side of the driven gear (78) facing the limiting groove (612); a matching groove (613) for accommodating the limiting protrusion (79) is provided on the bottom wall of the installation groove; a driving mechanism (8) is provided in the counterweight (62) for driving the rotating shaft (76) to move into the limiting groove (612) and for engaging the limiting protrusion (79) and the matching groove (613) with each other; when the limiting protrusion (79) and the matching groove (613) are engaged with each other, the driven gear (78) and the rack (75) maintain a meshing state.

6. The bench press training apparatus according to claim 5, characterized in that: The driving mechanism (8) comprises a rotating roller (80) rotatably connected to the counterweight (62); the axis of the rotating roller (80) is perpendicular to the axis of the limiting rod (70); the upper end of the limiting rod (70) always contacts the outer peripheral surface of the rotating roller (80); a section (800) is provided on the outer peripheral surface of the rotating roller (80) along the axial direction of the rotating roller (80) to accommodate the upper end of the rotating shaft (76) so that the supporting spring (77) maintains a natural state; and a driving component (9) is provided at one end of the rotating roller (80) to drive the rotating roller (80) to rotate.

7. The bench press training apparatus according to claim 6, characterized in that: The driving assembly (9) comprises a transmission gear (90) coaxially arranged at one end of the rotating roller (80) and a driving gear (91) meshing with the transmission gear (90); a rotating disk (92) is fixedly connected to one side of the driving gear (91); the rotating disk (92) is rotatably connected to the counterweight (62); and a handle (93) is fixedly connected to the side of the rotating disk (92) away from the driving gear (91).

Images