Parallel bars with high use safety and convenient height adjustment

Abstract

The utility model relates to parallel bars with high use safety and convenient height adjustment, a supporting rod is used for supporting a transverse bar, the supporting rod comprises a supporting rod and a supporting pipe, the supporting rod is inserted into the supporting pipe and is in linear sliding connection with the supporting pipe, a plurality of vertically arranged height adjusting insertion holes are formed in the supporting rod, a through hole is formed in the supporting pipe, and the height adjusting insertion holes are communicated with the through hole. The via hole is selectively coaxial with one of the height adjusting jacks; each supporting rod is provided with an insertion unit, the radial movement of the acute angle turning on the leaf spring relative to the guide cylinder is controlled through the control rod, and the compression and resetting of the compression spring are matched, so that the insertion part is kept in a retraction state or an extension state, and then the insertion with or separation from the coaxial via hole and the height adjusting insertion hole is realized, and the height of the parallel bars is conveniently adjusted. According to the technical scheme, the structural reliability is high, the operation safety coefficient is high, and the structural integrity is easily kept in the using process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of parallel bars sports equipment, and particularly relates to a parallel bar convenient to adjust height and high in use safety. BACKGROUND

[0002] Some of the prior art parallel bars have height adjustment functions to adapt to users of different heights. The height adjustment structure of the parallel bar generally comprises the following types: the first type is to screw a screw into two support rods that slide relative to each other, such as the Chinese utility model patent with the publication number CN203425439U; the second type is to insert a plug rod into two support rods that slide relative to each other, such as the Chinese utility model patent with the publication number CN209221405U; and the third type is to realize the total height of two screw-connected support rods through a screw rod and rotation limiting.

[0003] The defects of the first type and the third type are as follows: for a parallel bar used outdoors for a long time, the screw joint is bound to rust, which makes the threaded connection prone to the problem of being difficult to rotate due to rust. If the torque applied to the threaded connection by the hand is large, the hand or wrist may be injured, so the height adjustment function of the parallel bar can only be a decoration after a period of use.

[0004] The defect of the second type is as follows: in order to facilitate the insertion of the plug rod, there is a gap between the plug rod and the insertion hole. The existence of the gap makes it easier to pull out the plug rod, which provides the operability for intentionally damaging individuals to pull out the plug rod, thereby causing a great safety hazard of the parallel bar. SUMMARY

[0005] The utility model solves the technical problems of the prior art and provides a parallel bar convenient to adjust height and high in use safety.

[0006] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0007] The utility model provides a kind of high security and easy to adjust height's double bar, including 2 horizontal and mutually parallel horizontal bars, each horizontal bar is supported by 2 vertical struts, and the strut includes support rod and support tube, support rod is inserted in support tube and is linear sliding connection with support tube, support rod is equipped with several vertical arrangement height-adjusting insertion hole, support tube is equipped with through hole, through hole is selectively coaxial with one height-adjusting insertion hole;Each described strut is equipped with insertion unit, and insertion unit includes guide installation cylinder, insertion rod, control rod, leaf spring, compression spring and end cap, guide installation cylinder includes guide cylinder and installation flange, limit hole is equipped on the circumferential wall of guide cylinder, end cap is fixed at installation flange, and installation flange is fixedly connected with support tube;Insertion rod includes leaf spring installation cavity, guide limit ring II and insertion part;Insertion rod is horizontally slidingly connected with guide installation cylinder, and compression spring is sleeved on insertion part and is located between guide limit ring II and end cap;Leaf spring is placed in leaf spring installation cavity, and one end of leaf spring is fixedly connected with insertion rod, and leaf spring includes acute angle elbow;Control rod is used to control the radial movement of acute angle elbow on leaf spring relative to guide cylinder;When insertion part is in extended position, insertion part is inserted with coaxial through hole and height-adjusting insertion hole simultaneously, and compression spring is compressed, and acute angle elbow of leaf spring is placed in limit hole;When insertion part is in retracted position, insertion part is separated from the insertion of through hole and height-adjusting insertion hole, and compression spring resets, and acute angle elbow of leaf spring is located in the inner chamber of guide cylinder.

[0008] Further, the insertion rod includes a barrel portion, a guide limit ring I, a leaf spring installation cavity, a guide limit ring II, and an insertion portion in sequence; the guide limit ring I is used to abut and limit with the cavity inner surface of the overhanging end of the guide cylinder; the control rod includes a rod portion and a pin provided at one end of the rod portion, the pin is eccentrically arranged with the rod portion, and the rod portion is rotationally connected with the barrel portion; the leaf spring includes a flat plate I, an acute angle elbow, a flat plate III, a right angle elbow, and a flat plate II in sequence, the flat plate I and the flat plate III are parallel to each other, the flat plate III and the flat plate III are perpendicular to each other, and a long circular hole is provided on the flat plate I; the long circular hole is slidingly connected with the pin, and when the rod portion is rotated, the long circular hole adapts to the eccentric movement of the pin.

[0009] Further, the control rod further includes a large head portion, the large head portion is separately arranged at two ends of the rod portion with the pin, and the large head portion is located outside the guide installation cylinder.

[0010] Further, a copper sleeve is arranged between the support rod and the support tube.

[0011] Further, a guide groove in the vertical direction is arranged on the support rod, and a guide screw is fixedly arranged on the support tube, and the guide screw and the guide groove are matched to provide a guide for the vertical sliding of the support rod and the support tube.

[0012] The utility model can achieve the following beneficial effects:

[0013] By controlling the radial movement of the sharp-angled bend on the leaf spring relative to the guide tube through a joystick and coordinating the compression and resetting of the compression spring, the connector remains retracted or extended, facilitating adjustment of the parallel bars' height. This structural reliability is high, requiring minimal control effort, and is less likely to cause hand or wrist injuries to the operator, resulting in a high operational safety factor. Disassembly of this technical solution requires the use of tools, making the connector less susceptible to manual removal by vandals, ensuring structural integrity is maintained during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of an embodiment of the present utility model.

[0015] Figure 2 It is a front view of an embodiment of the present utility model.

[0016] Figure 3 It is a side view of an embodiment of the present utility model.

[0017] Figure 4 yes Figure 2 AA cross-sectional view.

[0018] Figure 5 yes Figure 3 Magnified view of part B.

[0019] Figure 6 yes Figure 2 Magnified view of section C.

[0020] Figure 7 yes Figure 2 Magnified view of section D in the middle.

[0021] Figure 8 It is a front view of the plug-in unit in the embodiment of the present utility model.

[0022] Figure 9 It is a main sectional view of the plug-in unit in the embodiment of the present utility model.

[0023] Figure 10 It is an exploded view of the plug-in unit in the embodiment of the present utility model.

[0024] Figure 11 It is a three-dimensional diagram of the guide installation cylinder in the plug-in unit of the embodiment of the utility model.

[0025] Figure 12 It is a front view of the leaf spring in the plug-in unit of the embodiment of the present utility model.

[0026] Figure 13 This is a state change diagram of the plug-in unit in the embodiment of the present utility model.

[0027] In the figure: 1-crossbar, 2- elbow, 3- support rod, 301- guide slot, 302- height adjustment jack, 4- support tube, 401- through hole, 5- plug-in unit, 501- control lever, 5011- large head, 5012- rod, 5013- pin, 502- plug-in rod, 5021- barrel, 5022- guide limit ring I, 5023- leaf spring mounting cavity, 5024- guide limit ring II, 5025- plug-in part; 503- guide mounting barrel, 5031- guide barrel, 5032- mounting flange, 5033- limit hole, 50331- limit wall, 504- nut, 505- leaf spring, 5051- flat plate I, 5052- long circular hole, 5053- flat plate II, 5054- right angle bend, 5055- flat plate III, 5056- acute angle bend, 506- compression spring, 507- end cover, 5071- through hole T, 6- base, 7- copper sleeve, 8- guide screw. DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail below in combination with the drawings and specific embodiments.

[0029] A kind of double bar of high security of use is convenient to adjust height, and same as prior art is as follows: including 2 horizontal and mutually parallel crossbars 1, each crossbar 1 is supported by 2 vertical support rods, support rod is connected with base 6;Support rod includes support rod 3 and support tube 4, support rod 3 is fixedly connected with crossbar 1 by elbow 2, support rod 3 is inserted in support tube 4 and is linearly slidably connected with support tube 4, support rod 3 is equipped with several vertical arrangement height adjustment jacks 302, support tube 4 is equipped with through hole 401, through hole 401 selectively coaxial with one of height adjustment jacks 302.

[0030] Different from prior art is as follows:

[0031] In order to facilitate the relative sliding of support rod 3 and support tube 4, copper sleeve 7 is arranged between support rod 3 and support tube 4.In addition, vertical guide slot 301 is arranged on support rod 3, guide screw 8 is fixedly arranged on support tube 4, and guide screw 8 and guide slot 301 are matched to provide guide for the vertical sliding of support rod 3 and support tube 4.

[0032] Plug-in unit 5 is arranged on each support rod, and plug-in unit 5 includes control lever 501, plug-in rod 502, guide mounting barrel 503, leaf spring 505, compression spring 506 and end cover 507.

[0033] Control lever 501 includes large head 5011, rod 5012 and pin 5013 (in order to facilitate installation, large head 5011 and rod 5012 are arranged as split type), large head 5011 and pin 5013 are separately arranged at both ends of rod 5012, and pin 5013 is arranged eccentrically with rod 5012.

[0034] The plug-in rod 502 comprises, in sequence, a cylinder portion 5021, a guide limiting ring I 5022, a leaf spring mounting cavity 5023, a guide limiting ring II 5024 and a plug-in portion 5025.

[0035] The guide mounting cylinder 503 comprises a guide cylinder 5031 and a mounting flange 5032, and the circumferential wall of the guide cylinder 5031 is provided with a limiting hole 5033.

[0036] The leaf spring 505 comprises, in sequence, a flat plate I 5051, an acute angle elbow 5056, a flat plate III 5055, a right angle elbow 5054 and a flat plate II 5053, the flat plate I 5051 is parallel to the flat plate III 5055, the flat plate III 5055 is perpendicular to the flat plate III 5055, and the flat plate I 5051 is provided with an oblong hole 5052.

[0037] The end cover 507 is provided with a through hole T5071.

[0038] The plug-in rod 502 is horizontally and slidingly connected with the guide mounting cylinder 503, specifically, the guide limiting ring I 5022 and the guide limiting ring II 5024 of the plug-in rod 502 are slidingly connected with the inner cavity wall of the guide cylinder 5031; the cylinder portion 5021 of the plug-in rod 502 is located at the side away from the mounting flange 5032 and extends out of the guide cylinder 5031; the guide limiting ring I 5022 is used for abutting and limiting with the inner cavity surface of the overhanging end of the guide cylinder 5031; the end cover 507 is fixed at the mounting flange 5032, the plug-in portion 5025 of the plug-in rod 502 passes through the through hole T5071 of the end cover 507; the compression spring 506 is sleeved on the plug-in portion 5025 and located between the guide limiting ring II 5024 and the end cover 507; the rod portion 5012 of the control rod 501 is rotationally connected with the cylinder portion 5021, the big head portion 5011 is located outside the guide mounting cylinder 503, and the pin 5013 is located in the leaf spring mounting cavity 5023 of the plug-in rod 502; the leaf spring 505 is placed in the leaf spring mounting cavity 5023, the flat plate II 5053 of the leaf spring 505 is fixedly connected with the plug-in rod 502, the acute angle elbow 5056 faces the limiting hole 5033 on the circumferential wall of the guide cylinder 5031, the oblong hole 5052 on the flat plate I 5051 is slidingly connected with the pin 5013, when the rod portion 5012 is rotated, the oblong hole 5052 adapts to the eccentric movement of the pin 5013, the nut 504 is fixed at the overhanging end of the pin 5013, and the nut 504 and the rod portion 5012 jointly limit the movement of the flat plate I 5051 along the pin 5013 in the axial direction.

[0039] When installing, first place the leaf spring 505 in the leaf spring installation cavity 5023 of the plug-in rod 502 and fix it with the plug-in rod 502; then pass the rod part 5012 through the barrel part 5021 of the plug-in rod 502, pass the pin 5013 through the long round hole 5052 on the flat plate I 5051, and then fix the nut 504 on the pin 5013; push the assembled part into the inner cavity of the guide cylinder 5031 from the opening of the installation flange 5032 of the guide installation cylinder 503, and pay attention to matching the position of the acute angle bend 5056 of the leaf spring 505 with the position of the limiting hole 5033 when installing, and stop pushing in when the acute angle bend 5056 is clamped on the limiting wall 50331 of the limiting hole 5033; then, put the compression spring 506 on the plug-in part 5025, and fix the end cover 507 on the installation flange 5032; then, fix the large head part 5011 with the rod part 5012. After assembling, plug the plug-in part 5025 with the coaxial via hole 401 and the height adjustment jack 302 at the same time, fix the installation flange 5032 with the support pipe 4, and realize the fixed connection between the entire plug-in unit 5 and the support pipe 4. When installing, pay attention to facing the limiting hole 5033 towards the ground to avoid rainwater entering.

[0040] The original state is that the compression spring 506 is in a compressed state, and when the height of the horizontal bar 1 needs to be adjusted:

[0041] 1. First, manually support the horizontal bar 1, and then rotate the two control rods 501 of the horizontal bar 1 to the 180° position one by one, the eccentrically arranged pin 5013 pulls the acute angle bend 5056 out of the limiting hole 5033, and under the action of the restoring force of the compression spring 506, the plug-in part 5025 is pulled to the retracted position and is disconnected from the plug-in with the via hole 401 and the height adjustment jack 302;

[0042] 2. Then adjust the height of the horizontal bar 1 (the height scale matching the height adjustment jack 302 can be arranged on the support rod 3), that is, select the coaxial via hole 401 and the target height adjustment jack 302;

[0043] 3. Push the control rod 501 to make the compression spring 506 in a compressed state, and then rotate the two control rods 501 of the horizontal bar 1 to the 0° position, the eccentrically arranged pin 5013 pulls the acute angle bend 5056 into the limiting hole 5033, and realizes the plug-in of the plug-in part 5025 with the coaxial via hole 401 and the target height adjustment jack 302.

Claims

1. A parallel bar with high safety and easy height adjustment, comprising two horizontal and mutually parallel horizontal bars (1), each horizontal bar (1) being supported by two vertical support rods, the support rods comprising a support rod (3) and a support tube (4), the support rod (3) being inserted into the support tube (4) and connected to the support tube (4) in a linear sliding manner, the support rod (3) being provided with a plurality of vertically arranged height adjustment sockets (302), the support tube (4) being provided with a through hole (401), the through hole (401) being selectively coaxial with one of the height adjustment sockets (302); the characteristics thereof are: Each of the support rods is provided with a plug-in unit (5), the plug-in unit (5) comprising a guide mounting cylinder (503), a plug-in rod (502), a control rod (501), a leaf spring (505), a compression spring (506) and an end cover (507), the guide mounting cylinder (503) comprising a guide cylinder (5031) and a mounting flange (5032), a limiting hole (5033) being provided on the circumferential wall of the guide cylinder (5031), and the end cover (507) being fixed on the mounting flange. The flange (5032) is fixedly connected to the support tube (4); the plug-in rod (502) includes a leaf spring installation cavity (5023), a guide limit ring II (5024) and a plug-in portion (5025); the plug-in rod (502) is horizontally slidably connected to the guide installation cylinder (503), and the compression spring (506) is sleeved on the plug-in portion (5025) and is located between the guide limit ring II (5024) and the end cover (507); The spring (505) is placed in the leaf spring installation cavity (5023), one end of the leaf spring (505) is fixedly connected to the plug rod (502), and the leaf spring (505) includes an acute angle bend (5056); the control rod (501) is used to control the radial movement of the acute angle bend (5056) on the leaf spring (505) relative to the guide cylinder (5031); when the plug-in portion (5025) is in the extended position, the plug-in portion (5025) is simultaneously in contact with the coaxial through hole (401 ) and the height adjustment socket (302), the compression spring (506) is compressed, and the sharp-angled bend (5056) of the leaf spring (505) is placed in the limiting hole (5033); when the plug-in portion (5025) is in the retracted position, the plug-in portion (5025) is disengaged from the plug-in connection with the through hole (401) and the height adjustment socket (302), the compression spring (506) is reset, and the sharp-angled bend (5056) of the leaf spring (505) is located in the inner cavity of the guide cylinder (5031).

2. The parallel bars with high safety and easy height adjustment according to claim 1, characterized in that: The plug-in rod (502) comprises a barrel (5021), a guide limiting ring I (5022), a leaf spring mounting cavity (5023), a guide limiting ring II (5024) and a plug-in portion (5025) in sequence; the guide limiting ring I (5022) is used to abut against the inner surface of the cavity at the overhanging end of the guide barrel (5031) for limiting position; the control rod (501) comprises a rod (5012) and a pin (5013) arranged at one end of the rod (5012); the pin (5013) is eccentrically arranged with the rod (5012), and the rod (5012) is rotationally connected to the barrel (5021). The leaf spring (505) includes a flat plate I (5051), an acute-angle bend (5056), a flat plate III (5055), a right-angle bend (5054), and a flat plate II (5053) in sequence. Flat plate I (5051) and flat plate III (5055) are parallel to each other, and flat plate III (5055) and flat plate III (5055) are perpendicular to each other. Flat plate I (5051) is provided with an oblong hole (5052). The oblong hole (5052) is slidably connected to the pin (5013). When the rod portion (5012) is rotated, the oblong hole (5052) adapts to the eccentric movement of the pin (5013).

3. The parallel bars with high safety and convenient height adjustment according to claim 2, characterized in that: The control rod (501) further comprises a large head portion (5011), the large head portion (5011) and the pin (5013) being respectively arranged at two ends of the rod portion (5012), and the large head portion (5011) being located outside the guide mounting cylinder (503).

4. The parallel bars with high safety and convenient height adjustment according to claim 1, characterized in that: A copper sleeve (7) is provided between the support rod (3) and the support tube (4).

5. The parallel bars with high safety and convenient height adjustment according to claim 1 are characterized by: The support rod (3) is provided with a guide groove (301) along the vertical direction, and the support tube (4) is fixedly provided with a guide screw (8), and the guide screw (8) matches the guide groove (301) to provide guidance for the vertical sliding of the support rod (3) and the support tube (4).

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