Exercise equipment

Abstract

The exercise device provided by the present invention comprises a main body portion which encloses a receiving cavity with two ends passing through, a transmission rod received in the receiving cavity, a first telescopic rod partially received in the receiving cavity, and a second telescopic rod partially received in the receiving cavity. The first telescopic rod and the second telescopic rod are connected by the transmission rod, so that the first telescopic rod and the second telescopic rod can move towards each other or move away from each other at the same distance at the same time. When adjusting the length of the exercise device, there is no need to adjust the two telescopic rods separately. The operation is simple and the balance of the exercise device can be maintained, thereby improving the safety of the use of the device.

Description

Technical Field

[0001] The invention relates to fitness equipment, in particular to a training device. Background Art

[0002] Pull-ups refer to hanging exercises that rely on one's own strength to overcome one's own body weight and do work upward. In the process of completing a complete pull-up, many back skeletal muscles and upper limb skeletal muscles need to participate in the work. It is a multi-joint compound movement exercise and a good way to exercise the upper limbs.

[0003] In order to facilitate exercise at any time, there are exercise devices on the market that are used to be supported between two vertical surfaces (such as door frames) for fitness users to jump up and grab to perform pull-up exercises. In order to fix the pull-up exercise device on the door frame, the length of the pull-up exercise device needs to be adjusted to ensure that the pull-up exercise device is pressed against the door frame. The general door frame pull-up exercise device includes a hollow main body and adjustable rods arranged at both ends of the main body. The length is generally adjusted by threading the main body and the adjusting rod.

[0004] However, the common thread-adjustable pull-up exercise device requires adjusting the adjustment rods on both sides separately, which is cumbersome to operate and difficult to ensure that the lengths of the two sides are consistent, which is not conducive to maintaining balance. Summary of the invention

[0005] Based on this, it is necessary to propose an exercise device which is easy to operate and can maintain balance.

[0006] The present invention provides an exercise device, comprising: a main body, which is surrounded by a receiving cavity with two ends connected; a transmission rod, which is received in the receiving cavity and can move along the central axis of the receiving cavity; a first telescopic rod, which is partially received in the receiving cavity and fixed to one end of the transmission rod, and the outer surface of the first telescopic rod is provided with a first external thread; a second telescopic rod, which is partially received in the receiving cavity and arranged at the other end of the transmission rod, and the outer surface of the second telescopic rod is provided with a second external thread; a first nut, which is fixed in the receiving cavity and has a first internal thread matched with the first external thread; a second nut, which is fixed in the receiving cavity and has a second internal thread matched with the second external thread; a transmission member, which is fixed to the second telescopic rod Towards one end of the first telescopic rod, the transmission rod passes through the transmission member, and the transmission member rotates with the rotation of the transmission rod; and two stoppers are respectively fixed at the two ends of the main body, the stoppers include a base and a clamping part, the base is fixed to the end of the main body, the clamping part is detachably connected to the base, the first telescopic rod and the second telescopic rod respectively pass through the two stoppers, wherein: the second telescopic rod is a column with a hollow cavity, the transmission rod part is accommodated in the hollow cavity of the second telescopic rod and can move along the central axis of the hollow cavity, the cooperation of the first external thread, the first internal thread, the second external thread and the second internal thread allows the first telescopic rod and the second telescopic rod to move towards or away from each other at the same distance at the same time.

[0007] Furthermore, the first telescopic rod includes a first outer rod extending to the outside of the main body, and the second telescopic rod includes a second outer rod extending to the outside of the main body. The first outer rod and the second outer rod respectively pass through two stoppers. When the clamping part is fixed to the base, the first outer rod and the second outer rod are stationary relative to the main body.

[0008] Furthermore, the first outer rod and the second outer rod are polygonal columns, the clamping portion includes an inner ring and an outer ring, the inner ring is provided with an opening adapted to the outer rod, and the outer ring is fixed to the base by clamping.

[0009] Furthermore, the first outer rod and the second outer rod are hexagonal prisms.

[0010] Furthermore, the first outer rod and the second outer rod are cylinders with longitudinal grooves on their outer surfaces, the clamping portion has convex teeth matched with the longitudinal grooves, and the clamping portion is fixed to the base by clamping.

[0011] Furthermore, the transmission rod is a polygonal column, and the transmission member is provided with a transmission member opening matched with the transmission rod.

[0012] Furthermore, the outer surface of the transmission rod is provided with a transmission rod thread, and the transmission member is provided with a transmission member thread matched with the transmission rod thread.

[0013] Furthermore, the exercise device also includes two pressing parts, which are respectively fixed to the ends of the first outer rod and the second outer rod away from the main body. The pressing parts include a fixing seat connected to the outer rod and an elastic pad arranged on a side of the fixing seat away from the outer rod, and the elastic pad has an arc bent away from the outer rod.

[0014] Furthermore, the outer surface of the first outer rod or the second outer rod is provided with scales for displaying the length of the exercise device.

[0015] The present invention also provides an exercise device, comprising: a main body, which is surrounded by a receiving cavity with two ends connected; a transmission rod, which is received in the receiving cavity and can be extended and retracted in the direction of the central axis of the receiving cavity; a first telescopic rod, which is partially received in the receiving cavity and fixed to one end of the transmission rod, and the outer surface of the first telescopic rod is provided with a first external thread; a second telescopic rod, which is partially received in the receiving cavity and fixed to the other end of the transmission rod, and the outer surface of the second telescopic rod is provided with a second external thread; a first nut, which is fixed in the receiving cavity and has a first internal thread matched with the first external thread; a second nut, which is fixed in the receiving cavity and has a first internal thread matched with the second external thread A second internal thread matched with the external thread; a transmission member, fixed to one end of the second telescopic rod facing the first telescopic rod, the transmission rod passes through the transmission member, and the transmission member rotates with the rotation of the transmission rod; and two stoppers, respectively fixed to the two ends of the main body, the stopper includes a base and a clamping part, the base is fixed to the end of the main body, the clamping part is detachably connected to the base, the first telescopic rod and the second telescopic rod pass through the two stoppers respectively, wherein: the cooperation of the first external thread, the first internal thread, the second external thread and the second internal thread allows the first telescopic rod and the second telescopic rod to move towards or away from each other at the same distance at the same time.

[0016] The exercise device provided by the present invention comprises a main body portion which encloses a receiving cavity with two ends passing through, a transmission rod received in the receiving cavity, a first telescopic rod partially received in the receiving cavity, and a second telescopic rod partially received in the receiving cavity. The first telescopic rod and the second telescopic rod are connected by the transmission rod, so that the first telescopic rod and the second telescopic rod can move towards each other or move away from each other at the same distance at the same time. When adjusting the length of the exercise device, there is no need to adjust the two telescopic rods separately. The operation is simple and the balance of the exercise device can be maintained, thereby improving the safety of the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a combined exercise device provided by an embodiment;

[0019] Figure 2 An exploded schematic diagram of an exercise device provided in accordance with an embodiment;

[0020] Figure 3 for Figure 1 A cross-sectional view of the exercise device shown along line AA'; and

[0021] Figure 4The present invention is an exploded schematic diagram of a rotation-stopping portion of an exercise device provided in one embodiment. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] like Figure 1-3 As shown, an exercise device 100 provided by an embodiment of the present invention comprises a main body 1 having a receiving cavity 10 with two ends through, a transmission rod 2 received in the receiving cavity 10, a first telescopic rod 3 partially received in the receiving cavity 10, and a second telescopic rod 4 partially received in the receiving cavity 10. The first telescopic rod 3 is fixed to one end of the transmission rod 2, and a first external thread 31 is provided on the outer surface of the first telescopic rod 3; the second telescopic rod 4 is provided at the other end of the transmission rod 2, and a second external thread 41 is provided on the outer surface of the second telescopic rod 4.

[0025] The exercise device 100 further includes a first nut 5 and a second nut 6 fixed in the receiving cavity 10, wherein the first nut 5 has a first internal thread 51 matched with the first external thread 31, and the second nut 6 has a second internal thread 61 matched with the second external thread 41. When the first telescopic rod 3 and the second telescopic rod 4 are rotated by force, since the first external thread 31 is engaged with the first internal thread 51, and the second external thread 41 is engaged with the second internal thread 61, the first telescopic rod 3 and the second telescopic rod 4 can move forward or backward in the receiving cavity 10, thereby achieving a telescopic effect.

[0026] In this embodiment, the second telescopic rod 4 is a column having a hollow cavity, and the transmission rod 2 is partially accommodated in the hollow cavity of the second telescopic rod 4 and can move along the central axis of the hollow cavity. The exercise device 100 also includes a transmission member 7 fixed to one end of the second telescopic rod 4 facing the first telescopic rod 3, and the transmission rod 2 passes through the transmission member 7, and the transmission member 7 rotates with the rotation of the transmission rod 2. Specifically, the transmission rod 2 is a multi-prism, such as a hexagonal prism, and the transmission member 7 is provided with a transmission member opening 70 that is compatible with the transmission rod 2. In other embodiments, the transmission rod can also be a column with a transmission rod thread on the outer surface, and the inner wall of the transmission member is provided with a transmission member thread that is compatible with the transmission rod thread. It can be understood that the function of the transmission member 7 is to be driven by the transmission rod 2 to drive the second telescopic rod 4 to rotate with the transmission rod 2.

[0027] The cooperation of the first external thread 31, the first internal thread 51, the second external thread 41 and the second internal thread 61 enables the first telescopic rod 3 and the second telescopic rod 4 to move toward or away from each other at the same time and at equal distances. Specifically, the rotation directions of the first internal thread 51 and the second internal thread 61 are opposite. When the first telescopic rod 3 is rotated by an external force, the transmission rod 2 fixedly connected to the first telescopic rod 3 rotates in the same direction as the first telescopic rod 3, and the transmission rod 2 drives the transmission member 7 connected to the second telescopic rod 4 to rotate, so that the second telescopic rod 4 rotates in the same direction as the first telescopic rod 3. Since the rotation directions of the first internal thread 51 and the second internal thread 61 are opposite, the direction in which the first telescopic rod 3 moves relative to the main body 1 is opposite to the direction in which the second telescopic rod 4 moves relative to the main body 1, thereby achieving the first telescopic rod 3 and the second telescopic rod 4 to move toward or away from each other at the same time and at equal distances. When the second telescopic rod 4 is rotated by an external force, the transmission member 7 fixedly connected to the second telescopic rod 4 rotates in the same direction as the second telescopic rod 4, and the transmission rod 2 is driven by the transmission member 7 to rotate, so that the first telescopic rod 3 and the second telescopic rod 4 rotate in the same direction. Since the rotation directions of the first internal thread 51 and the second internal thread 61 are opposite, the direction in which the first telescopic rod 3 moves relative to the main body 1 is opposite to the direction in which the second telescopic rod 4 moves relative to the main body 1, and the first telescopic rod 3 and the second telescopic rod 4 can also achieve simultaneous and equidistant movement toward or away from each other.

[0028] The exercise device 100 further includes two stoppers 8, which are respectively fixed at both ends of the main body 1. The stoppers 8 include a base 81 and a clamping portion 82. The base 81 is fixed to the end of the main body 1, and the clamping portion 82 is detachably connected to the base 81. The first telescopic rod 3 and the second telescopic rod 4 respectively pass through the two stoppers 8. In this embodiment, the first telescopic rod 3 includes a first outer rod 32 extending to the outside of the main body 1, and the second telescopic rod 4 includes a second outer rod 43 extending to the outside of the main body 1. The first outer rod 32 and the second outer rod 42 respectively pass through the two stoppers 8. When the clamping portion 82 is fixed to the base 81, the first outer rod 32 and the second outer rod 42 are stationary relative to the main body 1. Specifically, the first outer rod 32 and the second outer rod 42 are polygonal prisms, such as hexagonal prisms, and the clamping portion 82 includes an inner ring 821 and an outer ring 822. The inner ring 821 is provided with an opening adapted to the outer rod, and the outer ring 822 is fixed to the base 81 by clamping, for example, the outer ring 822 is provided with a plurality of protruding teeth, and the base 81 is provided with a plurality of sockets corresponding to the protruding teeth, or the base 81 is provided with a plurality of protruding teeth, and the outer ring 822 is provided with a socket corresponding to the protruding teeth, and the protruding teeth are fixed by clamping. In this way, when the exercise device 100 is adjusted to an appropriate length, the telescopic rod is fixed by the anti-rotation device 8, so that the telescopic rod no longer rotates relative to the main body, thereby ensuring the safety of the exercise device 100.

[0029] In other embodiments, the first outer rod and the second outer rod may be cylinders with longitudinal grooves on their outer surfaces, the clamping portion may have convex teeth matched with the longitudinal grooves, and the clamping portion may be fixed to the base by clamping.

[0030] It can be understood that the telescopic rod can be an integrally formed hollow cylinder with one part being the outer rod and the other part being a cylinder with threads on the outer surface, or it can be a cylinder with threads on the outer surface welded and fixed in the outer rod, as long as it is ensured that when the outer rod is rotated under force, the telescopic rod moves forward or backward in the main body.

[0031] In a preferred embodiment, the exercise device 100 further includes two pressing parts 9, which are respectively fixed to the ends of the first outer rod 32 and the second outer rod 42 away from the main body 1, and the pressing parts 9 include a fixing seat 91 connected to the outer rod and an elastic pad 92 arranged on the side of the fixing seat 91 away from the outer rod, and the elastic pad 92 has an arc bent away from the outer rod. Such a design allows the exercise device to gradually flatten the elastic pad 92 when pressing against the facade, exhausting the air between the elastic pad 92 and the facade, so that the elastic pad 92 and the facade reach a negative pressure state, thereby increasing the reliability of the fixing of the elastic pad 92 to the facade.

[0032] The outer surface of the first outer rod or the second outer rod is provided with a scale for displaying the length of the exercise device, so that the user can quickly determine whether the length of the exercise device roughly meets the width of the door frame when using the exercise device on door frames of different widths.

[0033] Another embodiment of the present invention provides an exercise device, comprising: a main body, which is surrounded by a receiving cavity with two ends extending through it; a transmission rod, which is received in the receiving cavity and can be extended and retracted in the direction of the central axis of the receiving cavity; a first telescopic rod, which is partially received in the receiving cavity and fixed to one end of the transmission rod, and the outer surface of the first telescopic rod is provided with a first external thread; a second telescopic rod, which is partially received in the receiving cavity and fixed to the other end of the transmission rod, and the outer surface of the second telescopic rod is provided with a second external thread; a first nut, which is fixed in the receiving cavity and has a first internal thread matching the first external thread; a second nut, which is fixed in the receiving cavity and It has a second internal thread that is compatible with the second external thread; a transmission member, which is fixed to the end of the second telescopic rod facing the first telescopic rod, the transmission rod passes through the transmission member, and the transmission member rotates with the rotation of the transmission rod; and two stoppers, which are respectively fixed to the two ends of the main body, the stopper includes a base and a clamping part, the base is fixed to the end of the main body, the clamping part is detachably connected to the base, the first telescopic rod and the second telescopic rod pass through the two stoppers respectively, wherein: the cooperation of the first external thread, the first internal thread, the second external thread and the second internal thread allows the first telescopic rod and the second telescopic rod to move towards each other or move away from each other at the same distance at the same time.

[0034] Compared with the previous embodiment, this embodiment utilizes the telescopic property of the transmission rod itself, and can also achieve that the telescopic rods fixed at both ends of the transmission rod move toward each other or move away from each other at equal distances at the same time. In this embodiment, the transmission rod is a telescopic member shaped like a radio antenna.

[0035] The exercise device provided by the present invention comprises a main body portion which encloses a receiving cavity with two ends passing through, a transmission rod received in the receiving cavity, a first telescopic rod partially received in the receiving cavity, and a second telescopic rod partially received in the receiving cavity. The first telescopic rod and the second telescopic rod are connected by the transmission rod, so that the first telescopic rod and the second telescopic rod can move towards each other or move away from each other at the same distance at the same time. When adjusting the length of the exercise device, there is no need to adjust the two telescopic rods separately. The operation is simple and the balance of the exercise device can be maintained, thereby improving the safety of the use of the device.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An exercise device, characterized in that: include: A main body portion, which encloses a receiving cavity with two ends connected therethrough; A transmission rod is received in the receiving cavity and can move along the central axis of the receiving cavity; A first telescopic rod, partially received in the receiving cavity and fixed to one end of the transmission rod, wherein the outer surface of the first telescopic rod is provided with a first external thread; A second telescopic rod, partially received in the receiving cavity and disposed at the other end of the transmission rod, wherein the outer surface of the second telescopic rod is provided with a second external thread; A first nut, fixed in the receiving cavity and having a first internal thread matched with the first external thread; A second nut, fixed in the receiving cavity and having a second internal thread matched with the second external thread; a transmission member, fixed to an end of the second telescopic rod facing the first telescopic rod, the transmission rod passing through the transmission member, and the transmission member rotating with the rotation of the transmission rod; and Two stoppers are respectively fixed at two ends of the main body, the stoppers include a base and a clamping portion, the base is fixed to the end of the main body, the clamping portion is detachably connected to the base, the first telescopic rod and the second telescopic rod pass through the two stoppers respectively, wherein: The second telescopic rod is a column with a hollow cavity, the transmission rod portion is accommodated in the hollow cavity of the second telescopic rod and can move along the central axis of the hollow cavity, and the cooperation of the first external thread, the first internal thread, the second external thread and the second internal thread enables the first telescopic rod and the second telescopic rod to move towards or away from each other at the same distance at the same time.

2. The exercise device according to claim 1, characterized in that: The first telescopic rod includes a first outer rod extending to the outside of the main body, and the second telescopic rod includes a second outer rod extending to the outside of the main body. The first outer rod and the second outer rod pass through the two anti-rotation devices respectively. When the clamping portion is fixed to the base, the first outer rod and the second outer rod are stationary relative to the main body.

3. The exercise device according to claim 2, characterized in that: The first outer rod and the second outer rod are polygonal columns, the clamping portion comprises an inner ring and an outer ring, the inner ring is provided with an opening adapted to the outer rod, and the outer ring is fixed to the base by clamping.

4. The exercise device according to claim 3, characterized in that: The first outer rod and the second outer rod are hexagonal prisms.

5. The exercise device according to claim 2, characterized in that: The first outer rod and the second outer rod are cylinders with longitudinal grooves on the outer surfaces, the clamping portion has convex teeth matched with the longitudinal grooves, and the clamping portion is fixed to the base by clamping.

6. The exercise device according to claim 1, characterized in that The transmission rod is a polygonal column, and the transmission member is provided with a transmission member opening matched with the transmission rod.

7. The exercise device according to claim 1, characterized in that: The outer surface of the transmission rod is provided with a transmission rod thread, and the transmission member is provided with a transmission member thread matched with the transmission rod thread.

8. The exercise device according to claim 2, characterized in that: It also includes two pressing parts, which are respectively fixed to the ends of the first outer rod and the second outer rod away from the main body. The pressing part includes a fixing seat connected to the outer rod and an elastic pad arranged on a side of the fixing seat away from the outer rod, and the elastic pad has an arc bent away from the outer rod.

9. The exercise device according to claim 2, characterized in that: The outer surface of the first outer rod or the second outer rod is provided with scales for displaying the length of the exercise device.

10. An exercise device, characterized in that: include: A main body portion, which encloses a receiving cavity with two ends connected therethrough; A transmission rod is received in the receiving cavity and can be extended and retracted in the direction of the central axis of the receiving cavity; A first telescopic rod, partially received in the receiving cavity and fixed to one end of the transmission rod, wherein the outer surface of the first telescopic rod is provided with a first external thread; A second telescopic rod, partially received in the receiving cavity and fixed to the other end of the transmission rod, the outer surface of the second telescopic rod being provided with a second external thread; A first nut, fixed in the receiving cavity and having a first internal thread matched with the first external thread; A second nut, fixed in the receiving cavity and having a second internal thread matched with the second external thread; a transmission member, fixed to an end of the second telescopic rod facing the first telescopic rod, the transmission rod passing through the transmission member, and the transmission member rotating with the rotation of the transmission rod; and Two stoppers are respectively fixed at two ends of the main body, the stoppers include a base and a clamping portion, the base is fixed to the end of the main body, the clamping portion is detachably connected to the base, the first telescopic rod and the second telescopic rod pass through the two stoppers respectively, wherein: The cooperation of the first external thread, the first internal thread, the second external thread and the second internal thread enables the first telescopic rod and the second telescopic rod to move towards each other or move away from each other at the same distance at the same time.

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