CN110735866A - Adjustable movement self-locking system - Google Patents

Abstract

The invention provides an adjustable movement self-locking system, which includes an outer sleeve structure, a moving part, a clamping part and a switch structure; the outer sleeve structure is provided with a accommodating space, and the moving part is nested and installed in the accommodating space. the accommodating space includes an engaging guide portion, and the inner wall surface of the engaging guide portion forms a locking action surface; the engaging piece is slidably installed in the engaging guide portion, and a paddle is connected to the engaging piece; The switch structure is fixedly connected or slidably connected with the outer sleeve structure, and the switch structure drives the paddle to deform, recover or move, and drives the engaging piece to slide in the engaging guide portion, so as to realize the locking state and the unlocking state of the engaging piece. transition between two states. In the present invention, the switch structure is used to simultaneously control a plurality of engaging parts to lock the moving parts, and the braking effect is good; in addition, the switch can be selected in various forms such as manual, electric, or a combination thereof, which greatly improves the adaptability to the use environment. .

Description

Adjustable movement self-locking system

technical field

The invention relates to the field of braking equipment, in particular to an adjustable movement self-locking system.

Background technique

The electromagnetic braking device provided by the patent document CN105584951B includes a brake shoe capable of sliding contact with the body to be braked, an armature supporting the brake shoe, and a plurality of brake springs that press the armature to apply a force in the braking direction to the brake shoe . The electromagnet body that resists the force of the brake spring to electromagnetically attract the armature and drives the brake shoe in the direction away from the braked body. The formed laminated compression rubber is compressed when the armature moves in the braking direction and acts as a reaction force of the brake spring. According to this patent document, noise such as collision noise during braking can be stably suppressed for a long period of time. However, in the application occasions where the external magnetic field strength is large and the magnetic field changes are complicated, the pure electromagnetic braking structure lacks sufficient action stability.

SUMMARY OF THE INVENTION

In view of the defects in the prior art, the purpose of the present invention is to provide an adjustable movement self-locking system.

According to the adjustable movement self-locking system provided by the present invention, it includes an outer sleeve structure, a moving part, an engaging part and a switch structure;

The outer sleeve structure is provided with an accommodating space, and the moving part is nested and installed in the accommodating space; the accommodating space includes a snap-fit guide portion, and the inner wall surface of the snap-fit guide portion forms a locking action surface;

The engaging piece is slidably installed in the engaging guide portion, and a paddle is connected to the snapping piece; the switch structure is fixedly or slidably connected with the outer sleeve structure, and the switch structure drives the paddle to deform, recover or move, and drives the card The engaging piece slides in the engaging guide part to realize the transition of the engaging piece between the locked state and the unlocked state:

In the locked state, the engaging piece is in contact with the moving piece and the locking surface at the same time; in the unlocked state, the engaging piece only contacts with the moving piece, or only with the locking surface.

Preferably, the paddle includes an elastic paddle, the elastic paddle is provided with a driving hole, the switch structure includes a switch stud, and the radial position of the switch stud on the outer sleeve structure can be adjusted; the distal end of the switch stud forming a support hole end that can be inserted into the drive hole and cause elastic deformation or recovery of the elastic paddle; or,

The paddle includes a first permanent magnet, the switch structure includes a rigid body or a second permanent magnet, and the switch structure drives the first permanent magnet to move.

Preferably, the outer sleeve structure includes a sleeve main body and a sleeve fitting, and the sleeve main body, the sleeve fitting and the switch structure are connected in sequence;

The sleeve fitting is provided with a displacement guide hole, the displacement guide hole reaches the inner space of the accommodating space, and the paddle penetrates the displacement guide hole in the length extension direction, and can generate an axial direction relative to the displacement guide hole. swipe in the direction.

Preferably, the switch structure comprises a piece of piezoelectric material or a piece of magnetostrictive material; or,

An electrostatic electrode group is formed between the distal end of the switch structure and the paddle.

Preferably, a wire hub is also arranged on the outer sleeve structure, and an electromagnetic coil is arranged on the wire hub;

The switch structure is fixedly installed or slidably installed in an axial through hole on the wire hub, and the paddle includes a magnet portion.

Preferably, the switch structure is screwed into the axial through hole of the wire hub, and the radial position of the switch structure on the outer sleeve structure can be adjusted;

A permanent magnet is arranged on the pick, and the permanent magnet forms a magnet portion; the switch structure includes an iron core portion.

Preferably, a guide sleeve is also included, the outer sleeve structure is detachably assembled in the guide sleeve, and the shaft joint penetrates the accommodating space on the outer sleeve structure and then reaches the second axial opening of the guide sleeve.

Preferably, one or more switch structures are circumferentially arranged on the outer sleeve structure, and the switch structures are in one-to-one correspondence with the paddles;

A single paddle is connected with a plurality of engaging parts, and the multiple engaging parts are located in different engaging guide parts.

Preferably, the engaging guide portion includes any of the following structures:

-- 360-degree continuous openings in the circumferential direction;

--Slotted structure discontinuously arranged in the circumferential direction.

Preferably, the shape of the driving hole is a C shape or a diamond shape;

Snaps include ball structures, square blocks or wedge blocks.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, the switch structure is used to control multiple engaging parts to lock the moving parts at the same time, and the braking effect is good; in addition, the switch can be selected in various forms such as manual, electric or a combination, which greatly improves the use environment. adaptability.

2. The present invention can satisfy the functions of realizing electromagnetic braking and manual braking at the same time. In the environment of unexpected power failure or strong external interference magnetic field, braking can still be realized through the manual rotary switch structure, which improves the safety of use.

3. The structure of the present invention is compact, and the overall size can be reduced. On the one hand, it can reduce the production cost, and on the other hand, it can also adapt to the application in a narrow space.

4. The present invention has reasonable design, reliable strength, and can be applied to large load conditions.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

1 is a schematic structural diagram of an adjustable motion self-locking system in an embodiment;

Fig. 2 is a partial enlarged view of the outer sleeve structure in the embodiment;

3 is a schematic structural diagram of an adjustable motion self-locking system in a variation;

Fig. 4 is a partial enlarged view of the structure of the outer sleeve in the case of no power supply in the modified example;

FIG. 5 is a partial enlarged view of the structure of the outer sleeve under the condition of electrification in the modified example.

The figure shows:

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

As shown in FIG. 1 and FIG. 2, in the embodiment, the adjustable movement self-locking system provided by the present invention includes an outer sleeve structure, a moving part 5, an engaging part 7 and a switch structure 4; the outer sleeve structure is provided with There is an accommodating space 8, and the moving part 5 is nested and installed in the accommodating space 8; the accommodating space 8 includes an engaging guide portion 9, and the inner wall surface of the engaging guide portion 9 forms a locking surface 10; the engaging element 7 is slidably installed in the engaging guide portion 9, and a plurality of engaging pieces 7 are connected with elastic paddles 6; the switch structure 4 is fixedly connected or slidingly connected with the outer sleeve structure, and the switch structure 4 drives the elastic paddles 6 Deformation or recovery, drive the engaging member 7 to slide in the engaging guide portion 9, and realize the transition of the engaging member 7 between the locked state and the unlocked state. In the locked state, the engaging member 7 7 is in contact with the moving part 5 and the locking surface 10 at the same time; in the unlocked state, the engaging part 7 only contacts the moving part 5 or only the locking surface 10 . In the embodiment, one elastic pick 6 is connected with a plurality of engaging members 7 , and the multiple engaging members 7 are located in different engaging guide portions 9 . Preferably, the engaging member 7 is a ball structure, such as a steel ball, an iron ball, a ceramic ball, etc.; of course, preferably, the engaging member 7 can also be a square block, a wedge-shaped block, or the like. Preferably, the adjustable movement self-locking system further includes a guide sleeve 1 , the outer sleeve structure is detachably assembled in the guide sleeve 1 , and the moving member 5 penetrates through the accommodating space 8 on the outer sleeve structure and reaches the guide sleeve 1 in the second axial opening 16 . Preferably, one or more switch structures 4 are arranged on the outer sleeve structure in the circumferential direction, and the switch structures 4 correspond to the elastic paddles 6 one-to-one. Preferably, the engaging guide portion 9 refers to the part where the size of the engaging member 7 changes in the moving direction, and the engaging member 7 can produce a transition between loose and tight states relative to the moving member 5 during the movement of the engaging member 7, in other words In other words, there is an included angle between the lengthwise extending direction of the locking action surface 10 and the axial direction of the outer sleeve structure. Specifically, it may be a 360-degree continuous conical opening in the circumferential direction, or it may be a slot structure in which groove depths are intermittently arranged in the circumferential direction. Since there can be a plurality of engaging guide portions 9, the above two structures can also exist simultaneously.

In practical applications, the moving member 5 can be a shaft structure as shown in FIG. 1, or a rotating shaft or a turntable structure. For the rotating shaft or the turntable structure, the corresponding engaging guide portion 9 is in the circumferential direction (the circumferential direction). The slotted structure has a changing groove depth in the direction of the rotation track of the moving member 5 (corresponding to the circumferential direction). Preferably, the sliding process of the engaging member 7 in the engaging guide portion 9 can be not only the approach or distance between the two engaging members 7, but also the movement of the entire elastic paddle 6 in one direction at the same time. Only one of the engaging pieces 7 is engaged to realize one-way self-locking.

The elastic paddle 6 is provided with a driving hole 11, the switch structure 4 includes a switch stud, the radial position of the switch stud on the outer sleeve structure can be adjusted, and the distal end of the switch stud forms a support hole end, the support The hole end can be inserted into the drive hole 11 and cause elastic deformation or recovery of the elastic paddle 6 . Preferably, the shape of the driving hole 11 is a C shape or a diamond shape.

In a variation, the elastic paddle 6 may also be other types of paddles. For example, the paddle includes a first permanent magnet, the switch structure 4 includes a rigid body or a second permanent magnet, and the switch structure 4 drives the first permanent magnet. A permanent magnet moves. Example of a specific implementation process: 1) Two paddles containing the first permanent magnet are arranged opposite each other, and the two first permanent magnets are attracted to each other, so that when the switch structure 4 is not in action, the engaging member 7 is in the position of moving the moving member 5 . In the locked state, at this time, the two first permanent magnets are magnetically connected and there may be a certain gap. The switch structure 4 is a rigid body. When moving radially inward, the gap is opened, so that the two cards The combined part 7 moves back to complete the unlocking of the moving part 5 . 2) The two paddles containing the first permanent magnets are arranged opposite each other, and through the mutual repulsion of the two first permanent magnets, when the switch structure 4 does not act, the engaging member 7 is in a state of unlocking the moving member 5, and the switch The structure 4 is a second permanent magnet. When moving radially inward, the two first permanent magnets are attracted, so that the engaging member 7 locks the moving member 5 . Of course, the selection of different structures corresponding to different working processes can also be determined according to the actual situation.

The outer sleeve structure includes a sleeve main body 2 and a sleeve fitting 3, the sleeve main body 2, the sleeve fitting 3 and the switch structure 4 are connected in sequence; the sleeve fitting 3 is provided with a displacement guide hole 12, and the displacement guide The guide hole 12 reaches the inner space of the accommodating space 8 , and the elastic pick 6 penetrates the displacement guide hole 12 in the longitudinal extension direction, and can slide relative to the displacement guide hole 12 in the axial direction.

The switch structure 4 includes a piezoelectric material piece or a magnetostrictive material piece; or, an electrostatic electrode group is formed between the distal end of the switch structure 4 and the elastic pick 6 . When the switch structure 4 is a piezoelectric material piece, if the piezoelectric material piece is energized or powered off, its length will change, thereby driving the elastic paddle 6 to elastically deform or recover to complete the locking or unlocking of the engaging piece 7 . Similarly, when the switch structure 4 is a magnetostrictive material, its length can be changed by a magnetic field. When an electrostatic electrode group is formed between the distal end of the switch structure 4 and the elastic paddle 6, the two are not in direct contact, and the elastic paddle 6 is elastically deformed or restored by passing the same charge or opposite charge.

As shown in FIG. 3 , in the modified example, the outer sleeve structure is further provided with a wire hub 13 , the wire hub 13 is provided with an electromagnetic coil 14 , and the switch structure 4 is fixedly installed or slidably installed on the wire hub 13 in the axial direction In the through hole, the elastic pick 6 includes a magnet portion. Preferably, the switch structure 4 is screwed into the axial through hole of the wire hub 13, and the radial position of the switch structure 4 on the outer sleeve structure can be adjusted. Preferably, a permanent magnet 15 is provided on the elastic pick 6, and the permanent magnet 15 forms a magnet portion; the switch structure 4 includes an iron core portion. Preferably, the wire hub 13 is installed on the sleeve fitting 3 . In practical applications, as shown in FIG. 4 , when the electromagnetic coil 14 is not energized, the switch structure 4 can be manually rotated. Under the extrusion of the switch structure 4 , the elastic paddle 6 is bent to the side where the moving part 5 is located. , and at the same time pull the engaging pieces 7 at both ends inward to lock the moving piece 5 . When the switch structure 4 is unscrewed in reverse, the paddle is elastically deformed or restored, and at the same time, the engaging member 7 is pushed away from both sides, and the moving member 5 is loosened. As shown in FIG. 5 , when the electromagnetic coil 14 is energized, the switch structure 4 is rotated out a little to act as an iron core, and the electromagnetic coil 14 forms an electromagnet structure. A small piece of permanent magnet 15 is embedded. By rotating the switch structure 4, the distance between the switch structure 4 and the permanent magnet 15 on the elastic paddle 6 is adjusted to ensure that the initial magnetic attraction force cannot deform or restore the elastic paddle 6. When the electromagnetic coil 14 is energized, the electromagnetic attraction force attracts the permanent magnet 15. The magnet 15 drives the elastic paddle 6 to bend, pulls the engaging piece 7 to move inward, locks the moving piece 5, and automatically resets under the action of elastic force after power off, and the moving piece 5 moves freely.

The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various variations or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be arbitrarily combined with each other without conflict.

Claims (10)

1. The adjustable motion self-locking system is characterized by comprising an outer sleeve structure, a motion piece (5), a clamping piece (7) and a switch structure (4);

   the outer sleeve is structurally provided with an accommodating space (8), and the moving part (5) is nested in the accommodating space (8); the accommodating space (8) comprises an engagement guide part (9), and the inner wall surface of the engagement guide part (9) forms a locking action surface (10);

   the clamping piece (7) is slidably arranged in the clamping guide part (9), and the clamping piece (7) is connected with a shifting sheet; the switch structure (4) is fixedly connected or slidably connected with the outer sleeve structure, the switch structure (4) drives the shifting sheet to deform, recover or move to drive the clamping piece (7) to slide in the clamping guide part (9), and the switching of the clamping piece (7) between the locking state and the unlocking state is realized:

   in the locking state, the clamping piece (7) is simultaneously contacted with the moving piece (5) and the locking action surface (10); in the unlocked state, the engaging piece (7) is in contact with only the moving piece (5) or only the lock acting surface (10).
2. 2. The adjustable motion self-locking system according to claim 1, wherein the shifting piece comprises an elastic shifting piece (6), a driving hole (11) is arranged on the elastic shifting piece (6), the switch structure (4) comprises a switch stud, and the radial position of the switch stud on the outer sleeve structure can be adjusted; the far end of the switch stud forms a support hole end which can be inserted into the driving hole (11) and causes the elastic shifting piece (6) to elastically deform or recover; or,

   the plectrum contains th permanent magnet, switch structure (4) contain rigid body or second permanent magnet, and switch structure (4) drive th permanent magnet motion.
3. 3. The adjustable motion self-locking system according to claim 1, wherein the outer sleeve structure comprises a sleeve body (2) and a sleeve fitting (3), and the sleeve body (2), the sleeve fitting (3) and the switch structure (4) are connected in sequence;

   the sleeve fitting (3) is provided with a displacement guide hole (12), the displacement guide hole (12) reaches the inner space of the accommodating space (8), and the shifting piece penetrates through the displacement guide hole (12) in the length extending direction and can slide in the axial direction relative to the displacement guide hole (12).
4. 4. The adjustable motion self-locking system according to claim 1, wherein the switch structure (4) comprises a piece of piezoelectric material or a piece of magnetostrictive material; or,

   an electrostatic electrode group is formed between the far end of the switch structure (4) and the poking sheet.
5. 5. The adjustable motion self-locking system according to claim 1, wherein the outer sleeve is further structurally provided with a wire hub (13), and the wire hub (13) is provided with an electromagnetic coil (14);

   the switch structure (4) is fixedly or slidably mounted in an axial through hole in the wire hub (13), and the poking piece comprises a magnet part.
6. 6. The adjustable kinematic self-locking system according to claim 5, characterized in that the switch structure (4) is screwed in an axial through hole of the hub (13), the radial position of the switch structure (4) on the outer sleeve structure being adjustable;

   the plectrum is provided with a permanent magnet (15), and the permanent magnet (15) forms a magnet part; the switch structure (4) comprises a core of iron.
7. 7. The adjustable motion self-locking system according to claim 1, further comprising a guide sleeve (1), wherein the outer sleeve structure is detachably assembled in the guide sleeve (1), and the pivot joint penetrates through the accommodating space (8) on the outer sleeve structure and then reaches the second axial opening (16) of the guide sleeve (1).
8. 8. The adjustable motion self-locking system according to claim 1, wherein or more switch structures (4) are circumferentially arranged on the outer sleeve structure, the switch structures (4) corresponding to the plectrum ;

   a plurality of clamping pieces (7) are connected to the single poking piece, and the clamping pieces (7) are located in different clamping guide parts (9).
9. 9. The adjustable motion self-locking system according to claim 8, wherein the engaging guide (9) comprises any of structures:

   -an aperture that is continuous 360 degrees in the circumferential direction;

   -a grooved structure arranged intermittently in the circumferential direction.
10. 10. The adjustable kinematic self-locking system according to claim 2, characterized in that the driving hole (11) is C-shaped or diamond-shaped;

    the clamping piece (7) comprises a ball structure, a square block or a wedge-shaped block.

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