CN217813277U

CN217813277U - Joint and ladder applying same

Info

Publication number: CN217813277U
Application number: CN202123450121.0U
Authority: CN
Inventors: 姚柏松; 朱雪林; 刘卫强
Original assignee: Jiangsu Zhou Jijie Lntelligent Technology Co ltd
Current assignee: Jiangsu Zhou Jijie Lntelligent Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-11-15
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a joint and applied this articulated ladder belongs to ladder technical field, has solved the inconvenient problem of prior art joint unblock and locking. Including the inner joint, the inner joint on articulated have an outer joint, inner joint and outer joint on be equipped with the loose axle that runs through both, loose axle one end be equipped with the connecting piece, the connecting piece on be equipped with the locking axle, the outer joint goes up circumference and is equipped with at least one through-hole that can supply the locking axle to pass, the inner joint on circumference be equipped with at least one locking hole that can supply the locking axle to penetrate, the connecting piece can drive the locking axle and pass the locking downthehole locking with inner joint and outer joint circumferential direction dead, inner joint and outer joint between still be equipped with and make the locking axle have the first elastic mechanism to the downthehole motion trend of locking all the time, the locking hole outside be equipped with limit stop and second elastic mechanism, second elastic mechanism make limit stop have the trend that stretches out locking hole passageway region all the time.

Description

Joint and ladder applying same

Technical Field

The utility model belongs to the technical field of the ladder, particularly, relate to a joint and use this articulated ladder.

Background

The ladder belongs to daily life appliances, is bordered by two long thick rods, crosses the horizontal pole that is fit for the climbing in the middle for climb, can divide into lift single ladder and lift double ladder. Because the whole length of the ladder is relatively fixed, the joints of the ladder are required to be rotated to adjust the angle.

The joint can be a joint component of a ladder, and can also be applied to other fields, such as folding stools, folding chairs, handrails of corridor passageways and the like. Generally, after the joint is rotated to a proper angle, locking is required. The joint after the rotation is locked in the cooperation of the ball-jumping shaft and the two shafts of the positioning shaft in the prior art, however, the unlocking and locking operations are unchanged, the ball-jumping shaft which plays a key role is difficult to process, the assembly is time-consuming and long-lasting, the cost is high, and the joint is not beneficial to mass production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide a joint and applied this articular ladder convenient to unblock and locking.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a joint, includes the inner joint, the inner joint on articulated have outer joint, inner joint and outer joint on be equipped with the loose axle that runs through both, loose axle one end be equipped with the connecting piece, the connecting piece on be equipped with the locking axle, outer joint on circumference be equipped with at least one through-hole that can supply the locking axle to pass, the inner joint on circumference be equipped with at least one locking hole that can supply the locking axle to penetrate, the connecting piece can drive the locking axle and pass into in the locking hole with inner joint and outer joint circumferential direction lock dead, inner joint and outer joint between still be equipped with and make the locking axle have the first elastic mechanism to the downthehole motion trend of locking all the time, the locking hole outside be equipped with limit stop and second elastic mechanism, second elastic mechanism make limit stop have the trend that stretches out locking hole passageway region all the time, the locking axle leave behind the locking hole limit stop can restrict the locking axle and pass this locking hole again, locking axle circumferential direction make limit stop overcome second elastic mechanism and act on to the internal contraction.

The locking shaft penetrates through a through hole in the outer joint and a locking hole in the inner joint at the same time, the movable shaft penetrates through the inner joint and the outer joint at the same time, and the inner joint and the outer joint can be locked in circumferential rotation in a matched mode. The locking shaft can be taken out of the locking hole by pulling the connecting piece, the inner joint and the outer joint can be unlocked and rotated, the rotating connecting piece can drive the locking shaft to rotate in the circumferential direction, the locking shaft can be pushed against the second elastic mechanism from the side part of the limiting block by rotating in the circumferential direction, the limiting block contracts and then is driven to reset by utilizing the elastic action of the first elastic mechanism, the movable shaft resets and drives the connecting piece and the locking shaft to move, the locking shaft can be inserted into the locking hole to lock the inner joint and the outer joint again, the unlocking function can be realized by only pulling the connecting piece, the limiting block is stretched out by utilizing the second elastic mechanism after unlocking, the automatic locking is prevented, the required angle of the adjustment of the outer joint and the inner joint can be directly rotated, the operation is simple, the locking effect is good, the parts are easy to process, the assembly is simple, and the production efficiency can be improved.

In the joint, the limit stop is provided with a guide structure which can overcome the elastic force of the second elastic mechanism to contract inwards when the side part of the limit stop is pressed. The guide structure can be a guide arc surface or a guide inclined surface.

In the joint, the outer side of the locking hole is provided with the mounting seat, the mounting seat is internally provided with a mounting groove for mounting the limit stop, the mounting groove can be used for the limit stop to extend out of or retract into the locking hole passage area, and the mounting seat is provided with a limiting part which can limit the limit stop to be separated from the mounting groove.

The mounting groove can supply the activity of limit stop, and spacing portion can prevent limit stop to drive circumferential direction or break away from by the locking axle.

In the joint, the limit stop comprises a locking part which can extend out of or retract into the locking hole channel region and an anti-falling part which can prevent the limit stop from being separated from the mounting seat, the guide structure is arranged on the locking part, and the anti-falling part can be abutted against the limiting part after the locking part extends out.

The locking portion stretches out and can prevent the locking shaft from inserting into the locking hole, and is spacing to locking shaft axial, and after the locking portion retracts, the locking shaft can insert the locking hole and spacing to inner joint and outer joint circumferential direction. The anti-falling part is used for being matched with the limiting part and preventing the anti-falling part from being separated from the mounting seat after being subjected to the elastic action of the second elastic mechanism.

In the joint, the second elastic mechanism comprises a second spring arranged in the mounting groove, one end of the second spring abuts against the inner wall of the mounting seat, and the other end of the second spring abuts against the limit stop.

During practical application, can set up the erection column in the mounting groove and install the second spring, prevent that the second spring from breaking away from, perhaps can be directly with second spring both ends respectively with mount pad inner wall and limit stop fixed connection, former convenient to detach and change increase of service life, the latter then is more firm, and stability is higher.

In the joint, the loose axle on be equipped with the step, outer joint on be equipped with solid fixed ring, first elastic mechanism including setting up the first spring on the loose axle, first spring one end offset with solid fixed ring, the other end offsets with the step, first spring can make the loose axle have the trend that drives the downthehole motion of locking axial locking all the time. The first spring can interact with the movable shaft by arranging the step.

In the joint, the outer joint is provided with 2 through holes, the inner joint is provided with 4 locking holes, and the locking shaft can enable the inner joint and the outer joint to rotate circumferentially and be locked when penetrating through the through holes in the outer joint and the locking holes in the inner joint.

More locking holes are formed in the inner joint relative to the outer joint along the circumferential rotation path of the locking shaft, different locking angles can be adjusted by rotating the locking shaft, and the ladder can be folded into various shapes such as a folded shape, an A-shaped shape or a straight shape.

In the joint, the two locking shafts are symmetrically arranged by taking the movable shaft as a center. By arranging two locking shafts which are symmetrical by taking the movable shaft as a center, the stability of the joint in a locking state can be improved.

In the joint, one side of the movable shaft, which is far away from the connecting piece, is provided with a limiting structure which can limit the movable shaft to axially and movably separate from the outer joint.

The limiting structure can be a limiting block, a limiting disc or a limiting rod, and the limiting condition can be met as long as the outer diameter of the limiting structure is larger than the inner diameter of the cavity where the movable shaft is located.

In the joint, a handle which is convenient for pushing the movable shaft to move towards the direction close to the connecting piece is arranged at one end of the movable shaft, which is far away from the connecting piece.

The handle is convenient for push the movable shaft to move in the direction close to the connecting piece, the connecting piece can drive the locking shaft to move, and both sides of the outer joint can be quickly adjusted.

Another object of the utility model is to provide an use ladder of above-mentioned joint.

Compared with the prior art, the utility model discloses utilize locking shaft and loose axle to pass interior joint and outer joint simultaneously, rotate the locking to interior joint and outer joint, utilize the elastic action of first elastic mechanism to drive the loose axle and reset, the loose axle resets and drives connecting piece and locking shaft motion, the locking shaft can be inserted the locking hole and lock again to interior joint and outer joint, only need to stimulate the connecting piece can realize the unblock function, utilize the second elastic mechanism to stretch out limit stop after the unblock, prevent its automatic locking, can directly rotate outer joint and interior joint and adjust the required angle, easy operation and locking effect are good, and each part is processed easily, the equipment is simple, can improve production efficiency; the limit stop block is provided with the guide structure, so that the locking shaft can be conveniently ejected into the mounting groove; the limit stop is prevented from being separated from the mounting groove by the matching of the limit part and the anti-falling part; a plurality of locking holes are formed in the inner joint to meet the requirement of being adjustable in various angles.

Drawings

Fig. 1 is a schematic perspective view of the first embodiment of the present invention;

fig. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the present invention after the structure of the part is hidden;

FIG. 4 is a schematic perspective view of the hidden part of FIG. 3;

FIG. 5 is a schematic view of a part of the structure of the present invention;

FIG. 6 is a schematic illustration of the hidden portion of the structure of FIG. 5;

in the figure, 1, the inner joint; 2. an outer joint; 21. a fixing ring; 3. a movable shaft; 31. a step; 4. a connecting member; 5. a lock shaft; 6. a locking hole; 7. a first spring; 8. a limit stop block; 81. a lock section; 82. an anti-drop part; 9. a second spring; 10. a guide structure; 11. a mounting seat; 111. a limiting part; 12. mounting grooves; 13. a limiting structure; 14. a handle; 15. and a through hole.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-6, the utility model discloses an interior joint 1, interior joint 1 on articulated have outer joint 2, interior joint 1 and outer joint 2 on be equipped with the loose axle 3 that runs through both, 3 one end of loose axle be equipped with connecting piece 4, connecting piece 4 on be equipped with locking axle 5, outer joint 2 on the circumference be equipped with at least one through-hole 15 that can supply locking axle 5 to pass, interior joint 1 on the circumference be equipped with at least one locking hole 6 that can supply locking axle 5 to penetrate, connecting piece 4 can drive locking axle 5 and penetrate interior joint 1 and outer joint 2 circumferential direction lock die in the locking hole 6, interior joint 1 and outer joint 2 between still be equipped with and make locking axle 5 have the first elastic mechanism to the locking hole 6 internal motion trend all the time, the locking hole 6 outside be equipped with limit stop 8 and second elastic mechanism, second elastic mechanism make limit stop 8 have the trend that stretches out locking hole 6 passageway region all the time, locking axle 5 leave behind locking hole 6 the limit stop 8 can restrict this locking axle 5 and contract again the effect of second elastic mechanism makes this limit stop 8 overcome this circumferential direction and rotate.

Utilize locking axle 5 to pass through-hole 15 on outer joint 2 and the locking hole 6 on the inner joint 1 simultaneously, the loose axle passes inner joint and outer joint simultaneously, and both cooperations can be to inner joint 1 and outer joint 2 circumferential direction locking. Pulling connecting piece 4 can take locking axle 5 out from locking hole 6, interior joint 1 can the unblock with outer joint 2 and rotate, it can drive 5 circumferential direction of locking axle to rotate connecting piece 4, 5 circumferential direction of locking axle can follow 8 sides of limit stop and push it to second elastic mechanism, after 8 shrink of limit stop, utilize first elastic mechanism elastic action to drive loose axle 3 and reset, loose axle 3 resets and drives connecting piece 4 and locking axle 5 motion, locking axle 5 can insert locking hole 6 and lock to interior joint 1 and outer joint 2 once more, only need pulling connecting piece 4 can realize the unblock function, utilize second elastic mechanism to stretch out limit stop 8 after the unblock, prevent its automatic locking, can directly rotate outer joint 2 and interior joint 1 and adjust required angle, easy operation and locking effect are good, and each part processing is easy, the equipment is simple, can improve production efficiency.

The limit stop 8 is provided with a guide structure 10 which can overcome the elastic force of the second elastic mechanism and contract inwards when the side part of the limit stop is pressed. The guide structure 10 may be a guide arc or a guide slope.

The locking hole 6 outside be equipped with mount pad 11, mount pad 11 in be equipped with the mounting groove 12 that is used for installing limit stop 8, mounting groove 12 can supply limit stop 8 to stretch out or retract to locking hole 6 access area, mount pad 11 on be equipped with and to restrict limit stop 8 rather than the spacing portion 111 that breaks away from.

The mounting groove 12 can be used for the movement of the limit stop 8, and the limit part 111 can prevent the limit stop 8 from being driven by the locking shaft 5 to rotate circumferentially or be separated from the locking shaft.

The limit stop 8 comprises a locking part 81 capable of extending out of or retracting into the passage area of the locking hole 6 and a retaining part 82 capable of preventing the limit stop from being separated from the mounting seat 11, the guide structure 10 is arranged on the locking part 81, and the retaining part 82 can be abutted against the limiting part 111 after the locking part 81 extends out.

The locking portion 81 stretches out and can prevent the locking shaft 5 from inserting into the locking hole 6, and is spacing to the locking shaft 5 axial, and after the locking portion 81 retracts, the locking shaft 5 can insert into the locking hole 6 and is spacing to inner joint 1 and outer joint 2 circumferential direction. The anti-falling part 82 is used for matching with the limiting part 111 and preventing the anti-falling part from being separated from the mounting seat 11 after being subjected to the elastic force of the second elastic mechanism.

The second elastic mechanism comprises a second spring 9 arranged in the mounting groove 12, one end of the second spring 9 abuts against the inner wall of the mounting seat 11, and the other end of the second spring abuts against the limit stop 8.

During practical application, can set up the erection column in mounting groove 12 and install second spring 9, prevent that second spring 9 from breaking away from, perhaps can directly be with second spring 9 both ends respectively with 11 inner walls of mount pad and 8 fixed connection of limit stop, the former convenient to detach and change, increase of service life, the latter is then more firm, and stability is higher.

The loose axle 3 on be equipped with step 31, outer joint 2 on be equipped with solid fixed ring 21, first elastic mechanism including setting up first spring 7 on the loose axle 3, 7 one end of first spring offset with solid fixed ring 21, the other end offsets with step 31, first spring 7 can make loose axle 3 have the trend that drives 5 to the internal motion of locking hole 6 all the time. It is achieved by providing a step 31 that the first spring 7 can interact with the movable shaft 3.

Outer joint 2 on be equipped with 2 through-holes 15, inner joint 1 on be equipped with 4 locking holes 6, locking axle 5 can make inner joint 1 and outer joint 2 circumferential direction locking when passing through-hole 15 on outer joint 2 and locking hole 6 on inner joint 1 simultaneously. More locking holes 6 are formed in the inner joint 1 relative to the outer joint 2 along the circumferential rotation path of the locking shaft 5, different locking angles can be adjusted by rotating the locking shaft 5, and the ladder can be folded into various shapes such as a folded shape, an A-shaped shape or a straight shape.

The two locking shafts 5 are symmetrically arranged by taking the movable shaft 3 as a center. By providing two locking shafts 5 that are symmetrical about the movable shaft 3, the stability of the joint in the locked state can be improved.

And a limiting structure 13 capable of limiting the axial movement separation of the movable shaft 3 and the outer joint 2 is arranged on one side of the movable shaft 3, which is far away from the connecting piece 4. The limiting structure 13 can be a limiting block, a limiting disc or a limiting rod, and the limiting condition can be met as long as the outer diameter of the limiting structure is larger than the inner diameter of the cavity where the movable shaft 3 is located.

And a handle 14 which is convenient for pushing the movable shaft 3 to move towards the direction close to the connecting piece 4 is arranged at one end of the movable shaft 3 far away from the connecting piece 4. The handle 14 is convenient for promote the activity axle 3 to the direction motion of being close to connecting piece 4, and the activity of connecting piece 4 can drive the activity of locking axle 5, has realized that outer joint 2 both sides all can quick adjustment.

The utility model discloses the theory of operation: the joint is applied to a ladder or other scenes, the handle 14 is pushed or the connecting piece 4 is pulled, the movable shaft 3 overcomes the elasticity of the first spring 7 and moves to one side close to the connecting piece 4, the movable shaft 3 moves to drive the connecting piece 4 to move, the connecting piece 4 moves to drive the locking shaft 5 to break away from the locking hole 6 on the inner joint 1, the limit stop 8 extends out of the mounting groove 12 under the action force of the second spring 9, the locking shaft 5 is prevented from being reset and inserted back into the locking hole 6 on the inner joint 1, the inner joint 1 and the outer joint 2 can be rotated at the moment, after the movable shaft rotates to a certain angle, the locking shaft 5 presses the side part of the next limit stop 8 and pushes the limit stop 8 into the mounting groove 12, the first spring 7 can reset to drive the movable shaft 3 to reset, the movable shaft 3 resets to drive the connecting piece 4 to move, the connecting piece 4 moves to drive the locking shaft 5 to be inserted into the locking hole 6, locking is realized again, single adjustment of the joint angle is completed, if adjustment is needed, the handle 14 can be continuously pushed or the connecting piece 4 can be pushed, and the inner joint 1 and the outer joint 2 can be unlocked.

The utility model discloses utilize locking shaft 5 and loose axle 3 to pass interior joint 1 and outer joint 2 simultaneously, rotate the locking to interior joint 1 and outer joint 2, utilize first elastic mechanism elastic action to drive loose axle 3 and reset, loose axle 3 resets and drives connecting piece 4 and locking shaft 5 motion, locking shaft 5 can insert locking hole 6 and lock to interior joint 1 and outer joint 2 once more, only need to stimulate connecting piece 4 can realize the unblock function, utilize the second elastic mechanism to stretch out limit stop 8 after the unblock, prevent its automatic locking, can directly rotate outer joint 2 and interior joint 1 and adjust required angle, easy operation and locking effect are good, and each part processing is easy, the equipment is simple, can improve production efficiency; the limit stop 8 is provided with a guide structure 10, so that the locking shaft 5 can be conveniently pushed into the mounting groove 12; the limit stop 8 is prevented from being separated from the mounting groove 12 by the matching of the limit part 111 and the anti-falling part 82; a plurality of locking holes 6 are arranged on the inner joint 1 to meet the requirement of being adjustable at various angles.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A joint, characterized by: comprises an inner joint (1), an outer joint (2) is hinged on the inner joint (1), a movable shaft (3) penetrating through the inner joint (1) and the outer joint (2) is arranged on the inner joint (1), a connecting piece (4) is arranged at one end of the movable shaft (3), a locking shaft (5) is arranged on the connecting piece (4), at least one through hole (15) allowing the locking shaft (5) to pass through is arranged on the outer joint (2) in the circumferential direction, at least one locking hole (6) allowing the locking shaft (5) to penetrate through is arranged on the inner joint (1) in the circumferential direction, the connecting piece (4) can drive the locking shaft (5) to penetrate into the locking hole (6) to lock the inner joint (1) and the outer joint (2) in the circumferential rotation direction, a first elastic mechanism capable of enabling the locking shaft (5) to have the trend of moving towards the locking hole (6) all the time is arranged between the inner joint (1) and the outer joint (2), a limit block (8) and a second elastic mechanism capable of enabling the locking shaft (5) to penetrate into the locking hole (6) to have the limit block (8) which limits the limit mechanism (6) to extend out of the locking hole (6) all the limit passage (6), the locking shaft (5) rotates in the circumferential direction to enable the limit stop (8) to overcome the action of the second elastic mechanism to contract inwards.

2. The joint of claim 1, wherein: the limit stop (8) is provided with a guide structure (10) which can overcome the elastic force of the second elastic mechanism to contract inwards when the side part of the limit stop is pressed.

3. A joint according to claim 1 or 2, wherein: locking hole (6) outside be equipped with mount pad (11), mount pad (11) in be equipped with mounting groove (12) that are used for installing limit stop (8), mounting groove (12) can supply limit stop (8) to stretch out or retract to locking hole (6) access area, mount pad (11) on be equipped with and to restrict limit stop (8) rather than spacing portion (111) that break away from.

4. The joint of claim 2, wherein: the limit stop (8) comprises a locking part (81) capable of extending out of or retracting into a channel region of the locking hole (6) and an anti-falling part (82) capable of preventing the anti-falling part from being separated from the mounting seat (11), the guide structure (10) is arranged on the locking part (81), and the anti-falling part (82) can abut against the limiting part (111) after the locking part (81) extends out.

5. A joint according to claim 3, wherein: the second elastic mechanism comprises a second spring (9) arranged in the mounting groove (12), one end of the second spring (9) is abutted against the inner wall of the mounting seat (11), and the other end of the second spring is abutted against the limit stop (8).

6. A joint according to claim 1 or 2, wherein: loose axle (3) on be equipped with step (31), outer joint (2) on be equipped with solid fixed ring (21), first elastic mechanism including setting up first spring (7) on loose axle (3), first spring (7) one end offset with solid fixed ring (21), the other end offsets with step (31), first spring (7) can make loose axle (3) have the trend that drives locking axle (5) to locking hole (6) internal motion all the time.

7. A joint according to claim 1 or 2, wherein: outer joint (2) on be equipped with 2 through-holes (15), inner joint (1) on be equipped with 4 locking holes (6), locking axle (5) can make inner joint (1) and outer joint (2) circumferential direction locking when passing through-hole (15) on outer joint (2) and locking hole (6) on inner joint (1) simultaneously.

8. A joint according to claim 1 or 2, wherein: the two locking shafts (5) are symmetrically arranged by taking the movable shaft (3) as a center.

9. A joint according to claim 1 or 2, wherein: and a limiting structure (13) capable of limiting the axial movement separation of the movable shaft (3) and the outer joint (2) is arranged on one side of the movable shaft (3) far away from the connecting piece (4).

10. A joint according to claim 1 or 2, wherein: and a handle (14) which is convenient for pushing the movable shaft (3) to move towards the direction close to the connecting piece (4) is arranged at one end of the movable shaft (3) far away from the connecting piece (4).

11. A ladder employing the joint of claim 1 or 2.