CN110787404A

CN110787404A - Telescopic rod transmission structure of horizontal bar

Info

Publication number: CN110787404A
Application number: CN201911062064.3A
Authority: CN
Inventors: 谢昱顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-14
Filing date: 2019-11-01
Publication date: 2020-02-14
Also published as: CN111298358A; CN211215150U; CN110124248A; CN211215149U; CN111298358B; CN211215151U; WO2020248594A1

Abstract

The invention provides a telescopic rod transmission structure of a horizontal bar, which comprises a main body piece, wherein through holes are formed in two ends of the main body piece, telescopic rods on two sides are inserted into the through holes and can axially move along the through holes, the telescopic rods on the two sides are parallel, the telescopic rods and the main body piece are relatively limited in rotation, a gear set for input and output direction changing transmission and a screw rod are arranged in the main body piece, the gear set comprises a main tooth part and a driven tooth part, a threaded connecting part is arranged on each telescopic rod, the screw rod is in threaded connection with the threaded connecting part, the screw rod is connected with the driven tooth part, the main tooth part is connected with an adjusting part, the adjusting part drives the main tooth part to rotate, and. The invention has the advantages that the adjustment is more stable, the self-locking effect is realized under the condition that the adjusting part does not drive to rotate, the telescopic rods can be stably supported without loosening, the telescopic rods at two ends can be synchronously adjusted to stretch, and the adjustment is more labor-saving than the single-section adjustment.

Description

Telescopic rod transmission structure of horizontal bar

Technical Field

The invention relates to the field of fitness equipment, in particular to a telescopic rod transmission structure of a horizontal bar.

Background

The pull-up rod is important for everyone, is particularly beneficial to people for long-term fitness, is more and more convenient for people nowadays, can be used for fitness anytime and anywhere, and is generally used in the market at present in a mode of being fixed between door frames or between walls.

Such as the one disclosed in patent publication No. CN201537346U, which describes a multi-segment screw-connected telescopic tube, the length change being produced by rotation of the telescopic tube.

Also, there is disclosed an indoor multi-functional body-building pole as patent publication No. CN205699053U, including: intermediate lever, threaded rod, iron bar frame, but 90 rotatory hinges, threaded connection structure, dismounting rod, loose joint, through but 90 rotatory hinges and threaded connection cooperation, intermediate lever and threaded rod make it firm through middle fixed screw and interior nut connection, are the loose joint at both ends, link to each other with the axle of dismantling the change through threaded connection and realize the multi-functional body-building pole of detachable, accomplish the motion of indoor multi-functional body-building. However, the operation mode that the body-building rod with the structure needs to be fixed between the door frames or between the walls is inconvenient, the body-building rod can be loosened when being fixed between the door frames or between the walls, and a user can be injured if the body-building rod falls off when in use.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a telescopic rod transmission structure of a horizontal bar, which is more convenient to disassemble and assemble and firmer to fix.

The technical scheme adopted by the invention for solving the technical problems is as follows: the telescopic rod transmission structure of the horizontal bar comprises a main body piece, through holes are arranged at two ends of the main body piece, telescopic rods at two sides are inserted into the through holes and can axially move along the through holes,

the telescopic rods on the two sides are parallel, the telescopic rods and the main body piece are limited in relative rotation,

the main body part is internally provided with a gear set for input and output direction-changing transmission and a screw rod, the gear set comprises a main tooth part and a driven tooth part, the telescopic rod is provided with a threaded connection part, the screw rod is in threaded connection with the threaded connection part,

the lead screw is connected with the driven tooth part, the main tooth part is connected with the adjusting part, the adjusting part drives the main tooth part to rotate, and the rotating axis of the main tooth part is perpendicular to the axis of the lead screw.

The main tooth part comprises first bevel gears, the driven tooth part comprises second bevel gears, the axes of the first bevel gears and the second bevel gears are perpendicular, and the axes of the second bevel gears are horizontal to the axis of the screw rod.

The main tooth portion comprises a circular tooth disc, annular teeth of the circular tooth disc are arranged on one surface of the circular tooth disc and comprise straight teeth/helical teeth, the driven tooth portion comprises a gear shaft, and one end of the gear shaft is provided with corresponding straight teeth/helical teeth.

The screw rod is fixedly connected with a driven tooth part, forward and reverse threads are arranged at two ends of the screw rod, and two ends of the screw rod are respectively connected with a telescopic rod.

The screw rod is connected with two driven tooth parts, one driven tooth part is fixedly connected with the screw rod, the other driven tooth part is rotatably connected with the screw rod, forward and reverse threads are arranged at two ends of the screw rod, and two ends of the screw rod are respectively connected with a telescopic rod.

Two parallel lead screws are arranged in the main body part, each lead screw is fixed with one driven tooth part, and each lead screw is connected with a telescopic rod.

The screw rod is connected with the shaft sleeve/bearing, the outer ring of the shaft sleeve/bearing is limited on the inner wall of the main body part, the threaded connection part on the telescopic rod comprises a nut, and the nut and the shaft sleeve/bearing are coaxial.

The main body piece is provided with a slotted hole, and the adjusting part is exposed from the slotted hole.

The telescopic rod is provided with a sliding groove in the axial direction, the main body part is fixedly connected with the sliding key, and the sliding groove in the telescopic rod slides in a matched manner with the sliding key.

The telescopic rod transmission structure of the horizontal bar comprises a main body piece, through holes are arranged at two ends of the main body piece, telescopic rods at two sides are inserted into the through holes and can axially move along the through holes,

the main body part is internally provided with a gear set for input and output direction-changing transmission and a screw rod, the gear set comprises a first worm wheel/worm connected with the adjusting part and a second worm wheel/worm connected with the screw rod, and the first worm wheel/worm and the second worm wheel/worm are in vertical direction-changing transmission.

Compared with the prior art, the telescopic rod has the advantages that the adjustment is more stable, the self-locking effect is achieved under the condition that the adjusting part does not drive to rotate, and the telescopic rod can be stably supported without loosening.

It can both ends telescopic link synchronous regulation flexible, and is more laborsaving than the regulation of single-stage formula.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the background art and explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a partial exploded view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is a sectional view of the first embodiment;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

FIG. 6 is a sectional view of a second embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is a sectional view of a third embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 at D;

FIG. 10 is a cross-sectional view of a fourth embodiment of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10 at E;

FIG. 12 is a cross-sectional view of a fifth embodiment of the present invention;

fig. 13 is a partial enlarged view of fig. 12 at F.

In the figure: 1, a main body piece; 2, telescoping a rod; 3, a limiting sleeve; 4, sliding a key; 5, a chute; 6 a contact portion; 7 contact surface; 8, anti-skid bulges; 9, a screw rod; 10 a first bevel gear; 11 second bevel gear; 12 shaft sleeves; 13 a nut; 14 slotted holes; 15 an adjusting part; 16 a hand held rotating member; 17 placing grooves; 18 through grooves; 19 a cover; 20 a level gauge; 21 a decorative shell; 22 a first worm gear; 23 a first worm; 24 a second worm gear; 25 second worm.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

In the first to third embodiments, the gear set adopts several connection forms of the first bevel gear 10 and the second bevel gear 11. When the gear set adopts the circular toothed plate and the gear shaft, the connection is also the same as the connection of the first structure to the third structure of the embodiment, so that the combination of the circular toothed plate and the gear shaft adopted by the gear set is not excessively expressed.

The first embodiment is as follows: as shown in fig. 1-5, the present invention comprises a body member 1, and through holes are provided at both ends of the body member 1. Preferably, main part 1 is the tubular structure, and the through-hole runs through whole main part 1, inserts telescopic link 2 in the through-hole of main part 1, and the telescopic link 2 on both sides is parallel, and telescopic link 2 on both sides inserts in the through-hole and can move along the through-hole axial.

The telescopic rod 2 and the main body member 1 are restricted in rotation. Specifically, main part 1 is equipped with bellied feather key 4, is equipped with the spout 5 with feather key 4 looks adaptation on the telescopic link 2, and feather key 4 stretches into in the spout 5 sliding fit. Preferably, the sliding keys 4 are provided at both ends of the body member 1. More preferably, the main body member 1 is connected with a limiting sleeve 3, the limiting sleeve 3 is provided with an integrally formed sliding key 4 protruding inwards, the limiting sleeve 3 is connected with the main body member 1 through a thread, a screw, a rivet, a pin or a fastening plug, and the limiting sleeve 3 is arranged at the through hole of the main body member 1.

The two ends of the telescopic rod 2 can be provided with contact parts 6, the contact parts 6 are provided with contact surfaces 7, and the contact surfaces 7 are provided with anti-skid projections 8. When the telescopic handle is used, the telescopic rod 2 axially stretches, and the contact part 6 at the end part of the telescopic rod 2 is pressed on a door frame or a wall surface.

Be equipped with main tooth portion and lead screw 9 in the main part spare 1, lead screw 9 is parallel with telescopic link 2, is equipped with threaded connection portion on the telescopic link 2, lead screw 9 and threaded connection portion threaded connection, and is preferred, threaded connection portion include one with telescopic link 2 relatively fixed's nut 13. The screw rod 9 is connected with a driven tooth part meshed with the main tooth part.

The main tooth part comprises a first bevel gear 10, the driven tooth part comprises two second bevel gears 11, one second bevel gear 11 is fixedly connected with the screw rod 9, the other second bevel gear 11 is rotatably connected with the screw rod 9, the first bevel gear 10 and the two second bevel gears 11 are meshed, forward and reverse threads are arranged at two ends of the screw rod 9, and the two ends of the screw rod 9 are respectively connected with the telescopic rod 2. The screw rod 9 is in threaded connection with the threaded connection part on the telescopic rod 2, and the screw rod 9 is rotated to enable the telescopic rod 2 to axially extend and retract. And the umbrella tooth structure can be automatically locked, and can change direction and transmit rotation by 90 degrees.

Adopt two second umbrella teeth 11 can support first umbrella tooth 10, prevent to take place offset between first umbrella tooth 10 and the single second umbrella tooth 11 to take place the dead phenomenon of angle card.

The screw rod 9 is connected with a shaft sleeve 12, the outer ring of the shaft sleeve 12 is limited on the inner wall of the main body part 1, and the shaft sleeve 12 is positioned at the side part of the second bevel gear 11 and used for supporting and rotating for smoothing. Preferably, the shaft sleeve 12 and the nut 13 are coaxial, the nut 13 is screwed on the screw rod 9, the end part of the nut 13 is pressed against the telescopic rod 2, and the nut 13 controls the telescopic movement of the telescopic rod 2.

In addition, the main body member 1 is provided with a through groove 18, the main tooth part is inserted from the through groove 18 during assembly, the cover 19 is detachably connected to the main body member 1 to cover the through groove 18, the cover 19 is provided with a slot hole 14, the main tooth part is connected with the adjusting part 15, the adjusting part 15 is exposed from the slot hole 14, and the preferable main tooth part and the adjusting part 15 are integrally formed.

Preferably, the adjusting portion 15 of the main tooth portion can be an adjusting hole, a handheld rotating member 16 matched with the adjusting portion 15 is arranged, the telescopic rod 2 of the exercise rod can be tightly propped against the door frame or the exercise rod can be loosened by inserting the handheld rotating member 16 into the adjusting hole, and the handheld rotating member 16 can be taken down when not in use.

The main body part 1 is provided with a decorative shell 21, and the decorative shell 21 is provided with a placing groove 17 for placing the handheld rotating part 16.

A level gauge 20 is also provided on the ornamental shell 21 to observe whether the exercise bar is balanced when mounted.

Alternatively, the adjusting portion 15 of the main gear may be a knob, which is exposed, and the rotation of the knob can push the telescopic rod 2 of the exercise bar tightly against the door frame or loosen the exercise bar.

Example two: as shown in fig. 6-7, the other structure is the same as the first embodiment, except that the main tooth portion includes a first bevel gear 10, the driven tooth portion is only a second bevel gear 11 fixedly connected to the screw rod, the first bevel gear 10 is engaged with the second bevel gear 11, the screw rod 9 has forward and reverse threads at two ends, and the screw rod 9 has two ends respectively connected to the telescopic rod 2.

Preferably, a shaft sleeve 12 or a bearing is sleeved on the screw rod 9, and the outer ring of the shaft sleeve 12 or the bearing is fixed with the inner wall of the main body part 1. The sleeve 12 or bearing is used to balance the axis of the second bevel gear 11.

Example three: as shown in fig. 8-9, the other structure is the same as the first embodiment, except that the main tooth portion includes a first bevel gear 10, the driven tooth portion includes two second bevel gears 11, two parallel lead screws 9 are provided, each lead screw 9 is provided with a fixed second bevel gear 11, the first bevel gear 10 is engaged with the second bevel gear 11, and each lead screw 9 is connected with a telescopic rod 2.

Example four: as shown in fig. 10-11, the present invention comprises a main body member 1, through holes are provided at both ends of the main body member 1, the telescopic rods 2 at both ends are inserted into the through holes and can move axially along the through holes, the telescopic rods 2 are parallel, the telescopic rods 2 and the main body member 1 are restricted by rotation, contact portions 6 are provided at both ends of the telescopic rods 2, a first worm wheel 22 and a lead screw 9 are provided in the main body member 1, the first worm wheel 22 is connected with an adjusting portion 15, a slot 14 is provided on the main body member 1, the adjusting portion 15 is exposed from the slot 14, the lead screw 9 is parallel to the telescopic rods 2, a threaded connection portion is provided on the telescopic rods 2, the lead screw 9 is in threaded connection with the threaded connection portion, a first worm 23.

Example five: as shown in fig. 12-13, the other structure is the same as the fourth embodiment, except that a second worm 25 and a lead screw 9 are arranged in the main body 1, the second worm 25 is connected with the adjusting part 15, the main body 1 is provided with a slot 14, the adjusting part 15 is exposed from the slot 14, the lead screw 9 is parallel to the telescopic rod 2, the telescopic rod 2 is provided with a threaded connection part, the lead screw 9 is in threaded connection with the threaded connection part, the lead screw 9 is connected with a second worm wheel 24, and the second worm wheel 24 and the second worm 25 are in direction-changing transmission.

In the above embodiment, the threaded connection portion on the screw rod 9 may also be a thread provided in the telescopic rod 2, that is, the telescopic rod 2 is sleeved on the screw rod 9 and is screwed with the screw rod.

The telescopic rod 2 and the main body piece 1 are limited by rotation in various ways, and can also be: 1. the sliding key 4 is arranged on the inner wall of the main body part 1, and the sliding chute 5 is arranged on the telescopic rod 2; 2. the sliding key 4 is arranged on the telescopic rod 2, and the sliding groove 5 is arranged on the inner wall of the main body part 1.

Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The present invention has been described in detail, and the principles and embodiments of the present invention have been described herein using specific examples, which are provided only to assist in understanding the present invention and the core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The telescopic rod transmission structure of the horizontal bar is characterized by comprising a main body piece, through holes are arranged at two ends of the main body piece, telescopic rods at two sides are inserted into the through holes and can axially move along the through holes,

2. The telescopic rod transmission structure of the horizontal bar as claimed in claim 1, wherein the primary tooth portion comprises a first bevel gear, the secondary tooth portion comprises a second bevel gear, the first bevel gear and the second bevel gear are perpendicular to each other in axial center, and the second bevel gear is horizontal to the screw rod in axial center.

3. The structure of claim 1, wherein the main gear comprises a circular gear, the ring gear of the circular gear is disposed on one side of the circular gear, the ring gear comprises straight/helical/spiral teeth, the driven gear comprises a gear shaft, and one end of the gear shaft is provided with a corresponding straight/helical/spiral tooth.

4. The telescopic rod transmission structure of the horizontal bar as claimed in claim 1, wherein the screw rod is fixedly connected with a driven tooth part, the screw rod is provided with forward and reverse threads at two ends, and the two ends of the screw rod are respectively connected with the telescopic rod.

5. The transmission structure of the telescopic rod of the horizontal bar as claimed in claim 1, wherein the screw rod is connected with two driven teeth, one of the driven teeth is fixedly connected with the screw rod, the other driven tooth is rotatably connected with the screw rod, the screw rod is provided with forward and reverse threads at two ends, and the two ends of the screw rod are respectively connected with the telescopic rod.

6. The structure of claim 1, wherein two parallel lead screws are provided in the main body, each lead screw is fixed to one of the driven teeth, and each lead screw is connected to one of the telescopic rods.

7. The structure of claim 1, wherein the screw is connected to a sleeve/bearing, the outer race of the sleeve/bearing is constrained to the inner wall of the body, and the threaded connection on the rod comprises a nut coaxial with the sleeve/bearing.

8. The telescopic rod transmission structure of a horizontal bar as claimed in claim 1, wherein the main body member is provided with a slot hole, and the adjusting portion is exposed from the slot hole.

9. The transmission structure of the telescopic rod of the horizontal bar as claimed in claim 1, wherein the telescopic rod is provided with a sliding groove in the axial direction, the main body member is fixedly connected with the sliding key, and the sliding groove on the telescopic rod is matched with the sliding key to slide.

10. The telescopic rod transmission structure of the horizontal bar is characterized by comprising a main body piece, through holes are arranged at two ends of the main body piece, telescopic rods at two sides are inserted into the through holes and can axially move along the through holes,