Rotary lock pin structure

Abstract

The utility model discloses a rotary type lock pin structure, which comprises a rotating shaft pivoted on an armrest frame and a lock pin assembly connected with the rotating shaft, the lock pin assembly comprises a connecting rod hinged with the rotating shaft and a lock pin hinged with the connecting rod, the lock pin is movably inserted on the side wall of the armrest frame and can protrude out of the side wall of the armrest frame, and the lock pin is connected with the connecting rod. A plurality of lock holes which are distributed up and down are formed in stand columns of the anti-gravity treadmill, armrest frames are arranged in the stand columns in a matched mode, lock pins can be inserted into the lock holes, a swing frame is connected with a pair of rotating shafts, and the pair of rotating shafts respectively drive lock pin assemblies on the left side and the right side. According to the swing frame, the handrail and the pair of stand columns can be conveniently unlocked and locked at the same time. Moreover, the armrest frame is provided with a limiting block, so that the rotation amplitude of the swing frame can be limited, and the user can smoothly adjust the height of the armrest.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical rehabilitation equipment, and specifically relates to an anti-gravity treadmill. BACKGROUND

[0002] The anti-gravity treadmill uses an air cushion to reduce the weight of the exerciser, thereby avoiding injuries during physical exercise. The anti-gravity treadmill is mainly applied to early rehabilitation training of patients after orthopedic and neurological surgery, rehabilitation training of obese, diabetic, and elderly patients with lower limb diseases, joint function training of athletes without damage to the heart, lungs, and muscles, aerobic training conditioning, and recovery training of diseases related to aging.

[0003] The main frame of the anti-gravity treadmill includes a pair of columns, a treadmill connected to the pair of columns, a handrail arranged on the pair of columns, and an air cushion located above the treadmill. To accommodate users of different heights, a locking mechanism is provided between the handrail and the columns. When unlocked, the handrail can be raised and lowered along the pair of columns. When locked, the handrail is stabilized on the pair of columns. SUMMARY

[0004] The utility model solves the technical problem of how the locking mechanism conveniently unlocks the handrail and the pair of columns simultaneously and locks them simultaneously.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a rotary lock pin structure, including a rotating shaft pivotally connected to a handrail frame, a lock pin assembly connected to the rotating shaft, the lock pin assembly including a connecting rod hingedly connected to the rotating shaft and a lock pin hingedly connected to the connecting rod, the lock pin being movably inserted into the side wall of the handrail frame and being able to protrude outward from the side wall of the handrail frame, the columns of the anti-gravity treadmill being provided with a plurality of lock holes distributed vertically, the handrail frame being fitted in the columns, the lock pin being able to be inserted into the lock holes, a swing frame being located between and connected to the pair of rotating shafts, the left rotating shaft of the pair of rotating shafts being used to drive the left lock pin assembly, the left lock pin assembly being able to be locked on the left column, and the right rotating shaft of the pair of rotating shafts being used to drive the right lock pin assembly, the right lock pin assembly being able to be locked on the right column.

[0006] According to the above technical scheme, the user swings the swing frame downward or upward, simultaneously driving the pair of rotating shafts to rotate, and the left lock pin assembly and the right lock pin assembly are unlocked simultaneously. The user raises or lowers the handrail frame to adjust the height of the handrail, and after finishing, the swing frame is reset, simultaneously driving the pair of rotating shafts to rotate in the opposite direction, the lock pin of the left lock pin assembly being inserted into the lock hole of the left column, and the lock pin of the right lock pin assembly being inserted into the lock hole of the right column, the position of the handrail frame and the handrail being locked.

[0007] The rotating shaft is pivotally connected to the vertical plate, the vertical plate is provided with a vertical plate tension spring seat, the swing frame is provided with a swing frame tension spring seat, and the swing frame tension spring seat and the vertical plate tension spring seat are provided with a tension spring.

[0008] The vertical plate is fixedly provided with a limiting block, the limiting block comprises a first limiting surface and a second limiting surface, the swing frame is lowered to abut against the first limiting surface, and the swing frame is raised to abut against the second limiting surface.

[0009] The swing frame comprises a pair of side plates and a connecting rod connected to the pair of side plates, and the pair of side plates are fixedly connected to the pair of rotating shafts in a one-to-one mode.

[0010] The end surface of the rotating shaft is provided with a threaded hole, and the side plate is fixedly connected to the rotating shaft through a fastening bolt matched with the threaded hole.

[0011] The side plate is provided with a bending structure, and the bending structure is provided with a handle. The user can swing the swing frame by using the handle, or can swing the swing frame by using the connecting rod, and the operation is convenient.

[0012] The rotating type lock pin structure can conveniently unlock the handrail and the pair of vertical columns at the same time, and can also lock the handrail and the pair of vertical columns at the same time. In addition, the handrail frame is provided with the limiting block, the rotation range of the swing frame can be limited, and the height of the handrail can be conveniently adjusted by the user. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described in connection with the drawings:

[0014] Figure 1 It is the handrail schematic view of the counterweight running track;

[0015] Figure 2 It is Figure 1 It is the enlarged view of A in the middle;

[0016] Figure 3 It is the schematic view of another view of the counterweight running track handrail;

[0017] Figure 4 It is Figure 3 It is the enlarged view of B in the middle.

[0018] Explanation of symbols in the drawing:

[0019] 10, handrail frame; 11, vertical plate; 12, vertical plate tension spring seat; 13, limiting block; 131, first limiting surface; 132, second limiting surface; 14, handrail;

[0020] 20, rotating shaft; 21, connecting rod; 22, lock pin;

[0021] 30, stand; 31, lock hole;

[0022] 40, swing frame; 41, swing frame tension spring seat; 42, side plate; 43, connecting rod; 44, fastening bolt; 45, bending structure; 46, handle. DETAILED DESCRIPTION

[0023] In combination Figures 1 to 4 A rotating lock pin structure, comprising rotating shafts 20 pivoted on a handrail frame 10, lock pin assemblies connected with the rotating shafts, the lock pin assemblies comprising connecting rods 21 hinged with the rotating shafts, lock pins 22 hinged with the connecting rods, the lock pins movably inserted in the side walls of the handrail frame and capable of protruding outward from the side walls of the handrail frame, a plurality of lock holes 31 distributed in an up-down manner on a stand 30 of an anti-gravity treadmill, the handrail frame being fitted in the stand, the lock pins being capable of being inserted into the lock holes, a swing frame 40 located between and connected with a pair of the rotating shafts, a left rotating shaft in the pair of the rotating shafts being used to drive a left lock pin assembly, the left lock pin assembly being capable of being locked on a left stand, a right rotating shaft in the pair of the rotating shafts being used to drive a right lock pin assembly, the right lock pin assembly being capable of being locked on a right stand.

[0024] As Figure 2 The handrail frame 10 is provided with a vertical plate 11, the rotating shafts 20 are pivoted on the vertical plate, the vertical plate is provided with a vertical plate tension spring seat 12, the swing frame 40 is provided with a swing frame tension spring seat 41, and a tension spring is arranged between the swing frame tension spring seat and the vertical plate tension spring seat.

[0025] The vertical plate 11 is fixedly installed with a limiting block 13, the limiting block comprises a first limiting surface 131 and a second limiting surface 132, the swing frame 40 is capable of abutting against the first limiting surface when it swings downward, and capable of abutting against the second limiting surface when it swings upward.

[0026] The swing frame 40 comprises a pair of side plates 42 and a connecting rod 43 connecting the pair of side plates, and the pair of side plates are fixedly connected with the pair of rotating shafts 20 in a one-to-one manner.

[0027] The end surface of the rotating shaft 20 is provided with a threaded hole, and the side plate 42 is fixedly connected with the rotating shaft through a fastening bolt 44 matched with the threaded hole.

[0028] As Figure 2 The side plate 42 is provided with a bending structure 45, and the bending structure is provided with a handle 46.

[0029] The user holds the handle 46 or the connecting rod 43, swings the swing frame 40 upward, drives the pair of rotating shafts 20 to rotate, and the left locking pin assembly and the right locking pin assembly are unlocked at the same time. When the side plate 42 of the swing frame 40 abuts against the second limiting surface 132 of the limiting block 13, the swing frame 40 reaches the highest position. The user raises or lowers the handrail frame 10, adjusts the height of the handrail 14, and after finishing, resets the swing frame 40 under the assistance of the tension spring, swings the swing frame downward, drives the pair of rotating shafts 20 to rotate reversely, the locking pin 22 of the left locking pin assembly is inserted into the lock hole 31 of the left stand column, the locking pin of the right locking pin assembly is inserted into the lock hole of the right stand column, and the position of the handrail frame 10 and the handrail 14 is locked. When the side plate 42 of the swing frame 40 abuts against the first limiting surface 131 of the limiting block 13, the swing frame 40 reaches the lowest position.

[0030] The above merely describes the preferred embodiments of the present application, and for those skilled in the art, the specific implementation manners and application scopes can be changed according to the thought of the present application, and the content of the description should not be understood as the limitation of the present application.

Claims

1. A rotary locking pin structure, comprising a rotating shaft (20) pivotally connected to a handrail frame (10), and a locking pin assembly connected to the rotating shaft, the locking pin assembly comprising a connecting rod (21) hinged to the rotating shaft, and a locking pin (22) hinged to the connecting rod, the locking pin being movably inserted into the side wall of the handrail frame and capable of protruding outward from the side wall of the handrail frame, the upright (30) of the anti-gravity running platform being provided with a plurality of vertically distributed locking holes (31), the handrail frame fitting into the upright, and the locking pin being able to be inserted into the locking holes, characterized in that: A swing frame (40) is located between and connected to a pair of rotating shafts. The left rotating shaft of the pair of rotating shafts is used to drive the left locking pin assembly, which can be locked onto the left column. The right rotating shaft of the pair of rotating shafts is used to drive the right locking pin assembly, which can be locked onto the right column.

2. The rotary locking pin structure as described in claim 1, characterized in that: The handrail (10) is provided with a vertical plate (11), the rotating shaft (20) is pivotally connected to the vertical plate, the vertical plate is provided with a vertical plate tension spring seat (12), the swing frame (40) is provided with a swing frame tension spring seat (41), and a tension spring is provided between the swing frame tension spring seat and the vertical plate tension spring seat.

3. The rotary locking pin structure as described in claim 2, characterized in that: A limiting block (13) is fixedly installed on the upright plate (11). The limiting block includes a first limiting surface (131) and a second limiting surface (132). When the swing frame (40) swings down, it can abut against the first limiting surface. When the swing frame swings up, it can abut against the second limiting surface.

4. The rotary locking pin structure as described in claim 1, characterized in that: The swing frame (40) includes a pair of side plates (42) and a connecting rod (43) connecting the pair of side plates. The pair of side plates are fixedly connected to a pair of rotating shafts (20) in a one-to-one manner.

5. The rotary locking pin structure as described in claim 4, characterized in that: The end face of the rotating shaft (20) is provided with a threaded hole, and the side plate (42) is fixedly connected to the rotating shaft by a fastening bolt (44) that mates with the threaded hole.

6. The rotary locking pin structure as described in claim 4, characterized in that: The side plate (42) is provided with a bending structure (45), and a handle (46) is provided on the bending structure.

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