CN212318517U

CN212318517U - Telescopic rotating shaft

Info

Publication number: CN212318517U
Application number: CN202020959525.9U
Authority: CN
Inventors: 罗元月
Original assignee: Shaoguan Guangkong Mechanical Transmission Technology Co ltd
Current assignee: Hubei Duoliduo Transmission Shaft Co.,Ltd.
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-01-08
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a telescopic rotating shaft, which comprises an outer barrel, a main shaft is arranged at two ends of the outer barrel in a penetrating way, a plurality of first guide grooves are sequentially arranged on the outer wall of the main shaft along the circumference, a first sleeve is sleeved on the main shaft, a fixing ring is fixedly arranged on the inner wall of the outer barrel and is sleeved on the first sleeve, a first lug which can be matched with the first guide grooves is arranged on the inner wall of the first sleeve, a locking mechanism which can lock the main shaft is arranged on the inner wall of the outer barrel, a driving mechanism which can drive the locking mechanism is arranged on the first sleeve, an unlocking mechanism which can unlock the locking mechanism is arranged on the outer wall of the outer barrel, the main shaft can be locked on the outer barrel only by rotating the main shaft after the length is adjusted, the driving shaft can be normally used after the main shaft is locked, thus the same driving shaft can be suitable for assembly bodies with different sizes, and when the size of the assembly body has errors, the assembly body can be normally arranged on the assembly body.

Description

Telescopic rotating shaft

Technical Field

The utility model relates to a transmission field, in particular to pivot that can stretch out and draw back.

Background

In the prior art, the transmission shaft is generally fixed in length and cannot be lengthened or shortened, and during actual assembly, once errors occur, the transmission shaft cannot be assembled and can only be installed on an assembly body with the same standard size, so that when the assembly body with different sizes needs to be assembled, another transmission shaft with different sizes needs to be purchased, and the assembly is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pivot that can stretch out and draw back.

In order to achieve the above purpose, the utility model adopts the following scheme:

a telescopic rotating shaft comprises an outer barrel, a main shaft penetrates through two ends of the outer barrel, a plurality of first guide grooves are sequentially arranged on the outer wall of the main shaft along the circumference, a first sleeve is sleeved on the main shaft, a fixing ring is fixedly arranged on the inner wall of the outer barrel and sleeved on the first sleeve, a first lug capable of being matched with the first guide grooves is arranged on the inner wall of the first sleeve, a locking mechanism capable of locking the main shaft is arranged on the inner wall of the outer barrel, a driving mechanism capable of driving the locking mechanism is arranged on the first sleeve, an unlocking mechanism capable of unlocking the locking mechanism is arranged on the outer wall of the outer barrel, the length of the transmission shaft can be changed, the main shaft can be locked on the outer barrel only by rotating the main shaft after the length is adjusted, the transmission shaft can be normally practical after the main shaft is locked, and therefore, the same transmission shaft can be suitable for assembly bodies with different sizes, and when the size of the assembly body has errors, the assembly body can be normally arranged on the assembly body.

Furthermore, locking mechanical system is including the symmetry setting second guide way on the urceolus inner wall first sleeve bilateral symmetry is equipped with the ring be equipped with the second lug that can stretch into in the second guide way on the outer wall of ring be equipped with logical groove on the inner wall of ring it is equipped with trapezoidal piece to lead to the inslot be equipped with first spring between trapezoidal piece and the logical groove trapezoidal piece one end is equipped with the box be equipped with the fixture block in the box be equipped with the second spring between fixture block and the box the inclined plane of trapezoidal piece is connected with actuating mechanism, and the main shaft just can rotate with the urceolus synchronization when the fixture block card advances in the first guide way.

Furthermore, the fixture block is provided with first teeth at the bottom, second teeth capable of being matched with the first teeth are arranged in the first guide groove, the inclined plate capable of extruding the trapezoidal block is arranged in the through groove, and after the first teeth are meshed with the second teeth, the main shaft cannot move any more, so that the length of the main shaft can be fixed.

Preferably, the driving mechanism comprises a threaded hole penetrating through the circular ring, a threaded rod is connected to the threaded hole in a threaded manner, one-way gears are symmetrically arranged on the outer wall of the threaded rod, and third teeth capable of being meshed with the one-way gears are arranged on the first sleeve.

Furthermore, the one-way gear comprises a circular plate fixed on the outer wall of the threaded rod, a plurality of grooves are sequentially formed in the outer wall of the circular plate along the circumference, fourth teeth are connected in the grooves, and a fourth spring is arranged between the fourth teeth and the grooves.

Furthermore, the unlocking mechanism comprises a clamping block on which a T-shaped block is arranged, the T-shaped block extends out of the outer barrel, when the T-shaped block is lifted, the main shaft can be unlocked, and the length can be adjusted again.

To sum up, the utility model discloses for its beneficial effect of prior art is:

the utility model discloses can change the length of transmission shaft, only need to rotate the main shaft moreover after having adjusted length and just enable the main shaft locking on the urceolus, just can normal practical by the locking rear drive axle when the main shaft, just so can make the same transmission shaft be applicable to not unidimensional assembly body, the size of assembly body error appearance makes can both be normal install in the assembly body moreover.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is an enlarged view of the present invention at a-a in fig. 2.

The drawings indicate the description: 1. an outer cylinder; 2. a main shaft; 3. a first guide groove; 4. a first sleeve; 5. a fixing ring; 6. a first bump; 20. a locking mechanism; 40. a drive mechanism; 60. an unlocking mechanism; 21. a second guide groove; 22. a circular ring; 23. a second bump; 24. a through groove; 25. a trapezoidal block; 26. a first spring; 27. a box; 28. a clamping block; 29. a second spring; 40. a drive mechanism; 11. a first tooth; 12. a second tooth; 100. a sloping plate; 41. a threaded hole; 42. a threaded rod; 43. a one-way gear; 44. a third tooth; 91. a circular plate; 92. a groove; 93. a fourth tooth; 94. a fourth spring; 61. and a T-shaped block.

Detailed Description

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:

as shown in fig. 1 to 4, a pivot that can stretch out and draw back, including urceolus 1 main shaft 2 is worn to be equipped with at 1 both ends of urceolus be equipped with a plurality of first guide ways 3 along the circumference in proper order on the outer wall of main shaft 2 the cover is equipped with first sleeve 4 on the main shaft 2 fixed solid fixed ring 5 and the cover of being equipped with on 1 inner wall of urceolus is established on first sleeve 4 be equipped with on the inner wall of first sleeve 4 can with the first lug 6 of first guide way 3 complex be equipped with the locking mechanical system 20 that can lock main shaft 2 on 1 inner wall of urceolus be equipped with the actuating mechanism 40 that can drive locking mechanical system 20 on 4 the outer wall of urceolus 1 is equipped with the release mechanism 60 that can unblock locking mechanical system 20.

The utility model discloses well locking mechanical system 20's an embodiment: the locking mechanism 20 comprises second guide grooves 21 symmetrically arranged on the inner wall of the outer cylinder 1, rings 22 are symmetrically arranged on two sides of the first sleeve 4, a second lug 23 capable of extending into the second guide groove 21 is arranged on the outer wall of the ring 22, a through groove 24 is arranged on the inner wall of the ring 22, a trapezoidal block 25 is arranged in the through groove 24, a first spring 26 is arranged between the trapezoidal block 25 and the through groove 24, a box 27 is arranged at one end of the trapezoidal block 25, a clamping block 28 is arranged in the box 27, a second spring 29 is arranged between the clamping block 28 and the box 27, the inclined plane of the trapezoidal block 25 is connected with a driving mechanism 40, the clamping block 28 is provided with a first tooth 11 at the bottom, a second tooth 12 capable of being matched with the first tooth 11 is arranged in the first guide groove 3, and an inclined plate 100 capable of extruding the trapezoidal block 25 is arranged in the through groove 24, the penetration degree of the main shaft extending out of the outer cylinder can be adjusted by pulling the main shaft, the transmission shaft is fixed on the rotating body, the length of the transmission shaft is fixed, and then the outer cylinder is rotated.

The utility model discloses an embodiment of well actuating mechanism 40: the driving mechanism 40 comprises a threaded hole 41 formed through the ring 22, a threaded rod 42 is connected to the threaded hole 41 in a threaded manner, one-way gears 43 are symmetrically arranged on the outer wall of the threaded rod 42, a third tooth 44 capable of being meshed with the one-way gears 43 is arranged on the first sleeve 4, when the outer cylinder is rotated to drive the screw rod to rotate by the one-way gear, the circular rings are drawn together after the screw rod rotates, when the inclined plate touches the first sleeve, the trapezoidal block is extruded to move downwards, and the clamping block can slide on the outer wall of the main shaft during rotation and can not enter the first guide groove, therefore, the box can be retracted into the box, and when the box is rotated by a quarter of a circle, the box meets one of the first guide grooves, under the action of the second spring, the clamping block can be clamped into the first guide groove, and meanwhile, the first tooth is meshed with the second tooth, so that the spindle can be fixed.

The utility model discloses well one-way gear 43's an embodiment: the one-way gear 43 includes a circular plate 91 fixed to an outer wall of the threaded rod 42, a plurality of grooves 92 are sequentially formed in the outer wall of the circular plate 91 along a circumference, a fourth tooth 93 is connected to and connected to the inside of the groove 92, and a fourth spring 94 is disposed between the fourth tooth 93 and the groove 92.

The utility model discloses an embodiment of well release mechanism 60: the unlocking mechanism 60 comprises a T-shaped block 61 arranged on the clamping block 28, the T-shaped block 61 extends out of the outer barrel 1, and when the length of the transmission shaft needs to be adjusted again, the main shaft can be unlocked by lifting the T-shaped block upwards.

When in use: the penetration that the main shaft stretches out the urceolus just can be adjusted to the pulling main shaft, fix the transmission shaft on the adapter body, at this moment, equal to the length of transmission shaft fixed, rotate the urceolus again, it drives the screw rod rotation at one-way gear to rotate when rotating the urceolus, after the screw rod rotates, the ring will be drawn close, and will begin to extrude the trapezoidal piece when the swash plate touches first sleeve and make the trapezoidal piece move down, and because the fixture block can slide on the outer wall of main shaft when rotating, can not get into first guide way, so can indent the box in, can meet one of them first guide way after rotating the quarter circle, can make the fixture block card go into first guide way under the effect of second spring, make first tooth and second tooth meshing simultaneously, just so can fix the main shaft, when the length of transmission shaft needs to adjust again, the T type piece is upwards just can unlock the main shaft.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only illustrative of the principles of the present invention, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and changes fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pivot that can stretch out and draw back, is including urceolus (1) main shaft (2), its characterized in that are worn to be equipped with at urceolus (1) both ends: be equipped with a plurality of first guide way (3) along the circumference in proper order on the outer wall of main shaft (2) the cover is equipped with first sleeve (4) on main shaft (2) fixedly on urceolus (1) inner wall be equipped with solid fixed ring (5) and cover and establish on first sleeve (4) be equipped with on the inner wall of first sleeve (4) can with first guide way (3) complex first lug (6) be equipped with locking mechanical system (20) that can lock main shaft (2) on urceolus (1) inner wall be equipped with actuating mechanism (40) that can drive locking mechanical system (20) on first sleeve (4) be equipped with on urceolus (1) outer wall and can unblock release mechanism (60) locking mechanical system (20).

2. A telescopic shaft according to claim 1, wherein the locking means (20) comprises second guide grooves (21) symmetrically arranged on the inner wall of the outer cylinder (1), two sides of the first sleeve (4) are symmetrically provided with circular rings (22), the outer wall of each circular ring (22) is provided with a second convex block (23) which can extend into the second guide groove (21), a through groove (24) is arranged on the inner wall of the circular ring (22), a trapezoidal block (25) is arranged in the through groove (24), a first spring (26) is arranged between the trapezoidal block (25) and the through groove (24), one end of the trapezoidal block (25) is provided with a box (27), a clamping block (28) is arranged in the box (27), a second spring (29) is arranged between the clamping block (28) and the box (27), and the inclined surface of the trapezoidal block (25) is connected with a driving mechanism (40).

3. A telescopic shaft according to claim 2, wherein the latch (28) has a first tooth (11) at the bottom, a second tooth (12) capable of engaging with the first tooth (11) is provided in the first guide groove (3), and a tilted plate (100) capable of pressing the trapezoidal block (25) is provided in the through groove (24).

4. A telescopic shaft according to claim 2, wherein the driving mechanism (40) comprises a threaded hole (41) formed in the ring (22), a threaded rod (42) is connected to the threaded hole (41) in a threaded manner, one-way gears (43) are symmetrically arranged on the outer wall of the threaded rod (42), and third teeth (44) capable of meshing with the one-way gears (43) are arranged on the first sleeve (4).

5. A telescopic shaft according to claim 4, wherein the one-way gear (43) comprises a circular plate (91) fixed on the outer wall of the threaded rod (42), a plurality of grooves (92) are sequentially arranged on the outer wall of the circular plate (91) along the circumference, a fourth tooth (93) is connected in the groove (92), and a fourth spring (94) is arranged between the fourth tooth (93) and the groove (92).

6. A telescopic shaft according to claim 2, wherein the unlocking mechanism (60) comprises a T-shaped block (61) arranged on the latch (28), and the T-shaped block (61) extends out of the outer cylinder (1).