CN218345139U - Non-clamping-jaw cap-rotating slipping mechanism, cap-rotating and cap-opening and closing device - Google Patents

Abstract

The utility model provides a no clamping jaw's spiral cover mechanism of skidding, spiral cover and switch cover device, no clamping jaw's spiral cover mechanism of skidding includes the rotating part, still includes: further comprising: the rotary part is suitable for being connected with an external driving device and is used for driving the clamping part to rotate; the clamping part is suitable for being clamped and limited from the middle of the top of the rotary cover so as to control the rotary cover to rotate under the driving of the rotary part; the lower extreme of rotating part is connected with the upper end of joint portion, and it configures to when joint portion receives when the reverse torsion of spiral cover exceeds predetermined value, the rotating part with the junction of joint portion can take place to skid. The utility model also provides a spiral cover and a switch cover equipment. Through the utility model discloses for the device of switch lid can be compacter, and simple structure facilitates the use.

Description

Non-clamping-jaw cap-rotating slipping mechanism, cap-rotating and cap-opening and closing device

Technical Field

The utility model relates to a spiral cover equipment technical field particularly, relates to a mechanism, spiral cover and switch cover device are slipped to spiral cover of no clamping jaw.

Background

The automatic rotary cover screwing action is an industrial and medical detection auxiliary means, so that the labor cost of a plurality of enterprises is saved, the key effect is achieved during the two-year epidemic situation prevention and control, the direct contact between collection personnel and case samples is avoided, and the safety is improved. At present, various cap screwing modes exist in the market, the cap screwing device is widely applied to the fields of medical detection, medicine, various production canning and the like, the prior techniques of the same type are generally applied to the aspect of medical detection, the integrated electric claw or pneumatic clamping jaw products are generally adopted for the cap opening and closing actions of the techniques of the same type to realize the holding and cap screwing of the outer ring of the threaded pipe cap, the size is large, the integration level is low, the weight is large, the cap screwing device is not practical for valuable spaces of laboratories or medical instruments with narrow space limits, the integrated electric claw or pneumatic clamping jaw is adopted, only the cap opening and closing actions of screw sampling pipes with different numbers of turns can be considered in terms of mechanism size and efficiency, the problem of synchronous cap opening and closing actions of screw sampling pipes with different numbers of turns is solved, the cap opening and clamping functions need to have better performance and moment feedback functions, many movement execution structural components need to be added for realizing the same cap opening and clamping functions, and the fault rate can be improved accordingly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a mechanism, spiral cover and switch cover device skid on spiral cover of no clamping jaw, simple structure, the operation is convenient, aims at improving above-mentioned problem.

The utility model adopts the following scheme: the utility model provides a no clamping jaw's spiral cover mechanism of skidding, includes the rotating part, still includes: the rotary part is suitable for being connected with an external driving device and comprises a rotary body used for driving the clamping part to rotate, and the rotary body is provided with a spherical boss; the clamping part comprises a rotary shaft head, and the rotary shaft head comprises a clamping structure and a wedge-shaped boss, wherein the clamping structure is suitable for being clamped and limited from the middle of the top of the rotary cover; the spherical boss is connected with the wedge-shaped boss and is configured to be capable of slipping when the reverse torque force of the screw cap on the clamping portion exceeds a preset value.

Furthermore, the rotating part also comprises a rotating connecting shaft, a rotating inner head and an elastic part, one end of the rotating connecting shaft is suitable for being connected with an external driving device, and the other end of the rotating connecting shaft is connected with the rotating inner head; the other end of the rotating inner head is connected with the rotating body, and the elastic piece is arranged between the rotating body and the rotating inner head; the rotator is kept away from the tip of rotatory inner head is provided with a plurality of around circumference evenly distributed's spherical boss, just spherical boss is suitable for joint portion to connect.

Furthermore, a sliding groove is formed in the rotating inner head, the rotating inner head is connected with the rotating body through a rotating clamping pin, and the rotating clamping pin is arranged in the sliding groove, so that the rotating body can move relative to the rotating inner head.

Furthermore, both sides of the wedge-shaped boss are provided with inclined surfaces, the spherical boss is inserted into a gap between two adjacent wedge-shaped bosses, and the spherical boss is configured to slide along the inclined surfaces of the wedge-shaped bosses when the upward torque force is larger than the downward pressure of the elastic member.

Further, the elastic part is a spring, and at least one gasket is arranged between the elastic part and the rotating inner head.

Further, an outer shell is arranged outside the elastic piece, and the outer shell is fixed on the rotating shaft head through an elastic clamping pin.

Furthermore, the clamping structure comprises a clamping groove, a plurality of abdicating grooves and a screw cover limiting boss, wherein the abdicating grooves are uniformly distributed around the circumference, the clamping groove is suitable for clamping the clamping convex points on the screw cover, and the abdicating grooves are suitable for the clamping convex points to enter or depart from the clamping groove; the spiral cover limiting boss is suitable for being matched with a rotary tool arranged on the spiral cover so as to drive the spiral cover to rotate.

The utility model also provides a spiral cover is suitable for the aforesaid the spiral cover skidding mechanism of no clamping jaw, the top of spiral cover is provided with and is suitable for joint structure male recess, just be provided with in the recess be used for with chucking groove and the groove assorted screens bump of stepping down, the outside setting of recess be used for with spiral cover restriction boss assorted rotatory frock position.

The utility model also provides a switch cover device, including drive arrangement and the aforesaid the spiral cover of no clamping jaw mechanism of skidding, drive arrangement connects the rotating part is used for the drive the rotating part rotates.

By adopting the above technical scheme, the utility model discloses can gain following technological effect: 1. the clamping part is matched with the rotary cover, and the clamping jaw is not used, so that the structure is more compact, and the rotary cover is suitable for smaller space; 2. through the cooperation of spherical convex block, wedge and elastic component, formed the structure of skidding for at the in-process of closing the lid, after having screwed, because resistance moment is greater than the overdraft of spring, make spherical convex block and wedge skid, prevent to continue to rotate and lead to the fact the injury down to the spiral cover. 3. Adopt peculiar two-way mechanism that skids to can be according to the screw thread depth of spiral cover or screw thread quantity adjustment moment, compare in the mechanism that skids of friction, more have the quantifiability, controllability, the structure is compacter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of an assembly structure of a cap-screwing slipping mechanism without a clamping jaw and a cap-screwing according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a gridless screw cap slipping mechanism according to an embodiment of the present invention;

fig. 3 is a partial schematic structural view of a slipping structure of a gridless cap screwing slipping mechanism according to an embodiment of the present invention:

fig. 4 is a schematic structural view of a rotary shaft head of a non-clamping-jaw cap-screwing slipping mechanism according to an embodiment of the present invention:

fig. 5 is another schematic structural diagram of the rotary shaft head of the non-clamping-jaw cap-screwing slipping mechanism of the embodiment of the present invention:

fig. 6 is a schematic structural diagram of a rotator of a gridless cap screwing slipping mechanism according to an embodiment of the present invention:

fig. 7 is a schematic structural view of a screw cap of a gridless screw cap slipping mechanism according to an embodiment of the present invention

Icon: the rotary clamping device comprises a rotary connecting shaft 1, a clamping spring 2, a rotary clamping pin 3, a rotary inner head 4, a shell 5, a gasket 6, a rotary body 7, a spring 8, an elastic clamping pin 9, a rotary shaft head 10, a wedge-shaped boss 11, an inclined plane 111, a spherical boss 12, a rotary tool position 13, a clamping convex point 14, a rotary cover limiting boss 15, an abdicating groove 16, a clamping groove 17 and a rotary cover 18.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

With reference to fig. 1 to 3, a first embodiment of the present invention provides a cap opening and closing device, which includes a driving device and a cap-screwing slipping mechanism without a clamping jaw. Here, the cap-turning slipping mechanism without a gripper includes a rotating portion, and further includes: the rotary part is suitable for being connected with an external driving device and is used for driving the clamping part to rotate; the clamping part is suitable for being clamped and limited from the middle of the top of the screw cap 18 so as to control the screw cap 18 to rotate under the driving of the rotating part; the lower extreme of rotating part is connected with the upper end of joint portion, and it is configured as when joint portion receives the reverse torsion of spiral cover 18 exceeds predetermined value, the rotating part with the junction of joint portion can take place to skid.

In this embodiment, drive arrangement connects the rotating part for the drive rotating part rotates, and drive arrangement can be the motor, connects the rotating part through the shaft coupling.

The cap 18 may be a can or a cap on a bottle used in the fields of medical testing, pharmaceuticals, various types of production and canning, etc., and the embodiment is described by taking a bottle with threads or screw threads and a cap 18 as an example, which is specially designed to match with a non-jaw cap 18 slipping mechanism.

Referring to fig. 2, the rotating portion includes a rotating connecting shaft 1, a rotating inner head 4, a rotating body 7 and an elastic member, one end of the rotating connecting shaft 1 is adapted to be connected to an external driving device, and the other end is connected to the rotating inner head 4; the other end of the rotary inner head 4 is connected with a rotary body 7, and an elastic piece is arranged between the rotary body 7 and the rotary inner head 4; the tip that the rotatory inner head 4 is kept away from to rotator 7 is provided with a plurality of around the spherical boss 12 of circumference evenly distributed, and spherical boss 12 is suitable for joint portion to connect. One end of the rotary connecting shaft 1 can be arranged into a D-shaped structure, so that the rotary connecting shaft is conveniently connected and matched with a driving device; the other end is hollow and is provided with two pin holes. The rotary inner head 4 is used for connecting the rotary body 7 and the rotary connecting shaft 1, is hollow, has an upper end suitable for being inserted into the rotary connecting shaft 1 and is fixedly connected with the rotary bayonet lock 3, and the rotary bayonet lock 3 is fixed by the snap spring 2, so that the disassembly and the assembly are convenient; the lower end of the elastic body is provided with a circle of convex step part used for limiting the elastic body. One end of the rotator 7 is inserted into the rotary inner head 4 to be connected with the rotary inner head 4, and the other end is used for connecting the clamping part. The bottom surface of the end of the rotator 7 connected with the clamping part is provided with a plurality of spherical bosses 12 which are uniformly distributed around the circumference, and the number of the spherical bosses 12 can be 4, 6 or more. Preferably, the inner rotary head 4 is provided with a sliding groove, the inner rotary head 4 is connected with the rotary body 7 through the rotary bayonet lock 3, and the rotary bayonet lock 3 is arranged in the sliding groove, so that the rotary body 7 can be displaced in the inner rotary head 4. Here, the rotary inner head 4 and the rotary body 7 are connected through an elastic body, and the rotary body 7 can adjust the height according to the magnitude of the received vertical pressure by arranging the sliding groove, so that the buffer effect can be achieved when the cap is opened and closed, and the sliding effect can be achieved by matching with a sliding structure, thereby preventing the screw threads or the screw threads of the screw cap 18 or the bottle body from being damaged. The elastic body may be provided as a spring 8.

Referring to fig. 2 to 6, in this embodiment, the fastening portion includes a rotating shaft head 10, one end of the rotating shaft head 10 is provided with a plurality of wedge-shaped bosses 11 connected to the spherical bosses 12 on the rotating body 7 and distributed uniformly around the circumference, and the other end of the rotating shaft head is provided with a fastening structure adapted to be fastened into the screw cap 18. The spherical boss 12 on the rotating body 7 and the wedge-shaped boss 11 arranged on the rotating shaft head 10 jointly form a slipping structure; here, both sides of each wedge boss 11 are provided with inclined surfaces 111, and the ball boss 12 is inserted into a gap between two adjacent wedge bosses 11, and the ball boss 12 is configured to slide along the inclined surfaces 111 of the wedge bosses 11 when receiving an upward twisting force greater than a downward pressure of the elastic member. That is, here, the slipping structure includes the lower end of the rotating body 7 and the upper end of the rotating spindle head 10, when the mechanism rotates to perform the cap opening and closing operation, when the cap 18 and the bottle body are locked by screwing to a certain degree, the reverse torque force applied to the clamping portion becomes large, at this time, because the spherical boss 12 contacts with the inclined plane 111, the component force opposite to the rotating direction and the upward component force are applied, when the upward component force of the reverse torque force makes the spherical boss 12 overcome the downward pressure of the spring 8, the spherical boss 12 will slide upward along the inclined plane 111 of the wedge-shaped boss 11, when the spherical boss 12 moves to the highest point, the spherical boss 12 enters the gap of the next wedge-shaped boss 11, i.e. completing one-time slipping, after the rotation is continued, the clamping portion can not rotate the cap 18 any more, and the thread and thread on the cap 18 or the bottle body are effectively prevented from being damaged by the continued rotation. Inclined surfaces 111 may be provided on both sides of the wedge boss 11 so that a slipping effect can be achieved in both forward and reverse rotations. Of course, in other embodiments, only one ramp 111 may be provided, so that the mechanism can only achieve one-way slip. In this embodiment, the torque applied to the snap-fit portion is the maximum resistance of the screw-on cap 18 and the bottle body to the bottom.

With continued reference to fig. 2 to 5, the clamping structure includes a clamping groove 17, a plurality of relief grooves 16 uniformly distributed around the circumference, and a screw cap limiting boss 15, wherein the clamping groove 17 is suitable for clamping the clamping salient points 14 on the screw cap 18, and the relief grooves 16 are suitable for the clamping salient points 14 to enter or leave the clamping groove 17; the screw cap limiting boss 15 is suitable for being matched with a rotary tool position 13 arranged on a screw cap 18 to drive the screw cap 18 to rotate. Specifically, the heights of the clamping groove 17, the abdicating groove 16 and the screw cap limiting boss 15 are different, wherein the clamping groove 17 is arranged in the middle of the abdicating groove 16 and the screw cap limiting boss 15; the rotary cover limiting lug bosses 15 are distributed along the outer circumference of the rotary shaft head 10, the abdicating groove 16 and the clamping groove 17 are arranged on a cylindrical block of the rotary shaft head 10 protruding the axis of the rotary shaft head, the clamping groove 17 is a groove position recessed around the cylindrical block for one circle, and the abdicating groove 16 is arranged on the surface of the cylindrical block and is arranged along the axial direction; in the process of inserting the screw cap 18, the abdicating groove 16 and the clamping groove 17 firstly enter the groove of the screw cap 18, and then the screw cap limiting boss 15 is in contact fit with the rotating tool position 13 of the screw cap 18; can be earlier like this through chucking groove 17 chucking, and through spiral cover restriction boss 15 drive rotatory frock position 13 rotation, in joint structure and spiral cover 18 cooperation process, screens bump 14 enters into chucking groove 17 through the groove 16 of stepping down, rethread rotates spiral cover 18 or rotates the joint structure and makes screens bump 14 enter into chucking groove 17 and accomplish the chucking, later block rotatory frock position 13 through spiral cover restriction boss 15 in order to realize drive function, when spiral cover 18 breaks away from with the joint structure, can pass through reverse rotation spiral cover 18, so that screens bump 14 and the groove 16 of stepping down are on same straight line, thereby make screens bump 14 deviate from the groove 16 of stepping down, accomplish the separation. Of course, the receding groove 16, the screw cap limiting boss 15, the clamping boss 14 and the rotating tool position 13 may be distributed in a staggered manner, so as to prevent the clamping boss 14 from entering the receding groove 16 due to the fact that the top surface of the rotating tool position 13 abuts against the screw cap limiting boss 15 during insertion. In this embodiment, the number of the yielding groove 16, the number of the rotary tool position 13 and the number of the rotary cover limiting bosses 15 can be set to be 4 along the circumference, and the groove positions are arranged in a staggered manner, so that the insertion and the extraction are smooth. Of course, the number of the abdicating groove 16, the rotating tooling position 13 and the cap screwing limiting boss 15 may be other values, which are all within the protection scope of the present invention.

In another preferred embodiment, shown in connection with fig. 2, at least one spacer 6 is arranged between the spring 8 and the rotating inner head 4. The shim 6 is here provided for controlling a predetermined slip torque, and when a large torque is required, the shim 6 can be increased and vice versa. Be provided with the multiple to the thickness of gasket 6, conveniently carry out accurate regulation to ensure that spiral cover 18 can cover tightly and can not harm the screw tooth. Under the structure, the slip mechanism can continuously rotate aiming at the bottles with different turns until the cap is closed. Here, the number of the spacers 6 to be placed can be determined according to the number of the threads or the number of the thread turns of the bottle body which are engaged with the screw cap 18, so that the bottle body can be adapted to different specifications.

In another preferred embodiment, the elastic element is externally provided with a housing 5, the housing 5 being fixed to the head 10 of the swivel shaft by means of elastic bayonet pins 9. Here, an inner step is provided above the inside of the housing 5, and is used for being matched with the step part of the rotary inner head 4 for limiting, and the housing 5 can be used for protecting an elastic part or parts inside the elastic part. Meanwhile, the elastic clamping pins 9 are arranged, so that the disassembly is convenient, and the efficiency is higher when the quantity of the adjusting gaskets 6 is disassembled. The elastic bayonet lock 9 can be a hollow cylindrical bayonet lock made of a plastic material, and a sawtooth-shaped opening is arranged on the side face of the bayonet lock, so that the bayonet lock can be compressed when being pressed by a vertical middle shaft, the diameter of the bayonet lock is reduced, the bayonet lock is inserted into pin holes formed in the rotary shaft head 10 and the shell 5, and the diameter of the elastic bayonet lock 9 is slightly larger than that of the pin holes, so that the elastic bayonet lock can be firmly clamped in the pin holes.

Referring to fig. 7, a second embodiment of the present invention provides a screw cap 18, where the screw cap 18 is adapted to match with the above-mentioned clamping portion, the screw cap 18 is used for being locked on the bottle or the can in a rotating manner, a groove is provided in the middle of the top of the screw cap 18, and a rotating tool position 13 is provided around the groove; the recess gets into with the convex cylinder piece that is suitable for the joint structure to evenly be provided with a plurality of screens bump 14 in the recess, screens bump 14 are suitable for the card to go to the groove of stepping down 16 of joint portion, and when stepping down groove 16 chucking screens bump 14 simultaneously, chucking groove 17 also can be with rotatory frock position 13 chucking, thereby can drive spiral cover 18 rotatory. Through the cooperation that sets up spiral cover 18 and the mechanism of skidding, realized the effect of no clamping jaw switch, simultaneously because the mechanism of skidding is direct card in the centre of spiral cover 18 for the diameter of the mechanism of skidding can be smaller, and need not to be greater than spiral cover 18, and this kind of structure makes the volume reduction of whole setting, and can realize the inseparable range the same with the bottle, more has the practicality.

The utility model discloses a theory of operation does: the rotary connecting shaft 1 is directly connected with a motor through a coupler to provide execution power for the screw cap 18, and the functions of the rotary connecting shaft mainly include the processes of cap opening and cap closing:

(1) Uncovering: the whole slipping mechanism can be matched with an external lifting structure to descend, the spring 8 is compressed, a clamping structure of the rotary shaft head 10 is inserted into the spiral cover 18, the spiral cover 18 has elasticity, the rotary shaft head 10 can enter from any position of the spiral cover 18, clamping convex points 14 of the spiral cover 18 are directly pushed into the clamping grooves 17, the whole spiral cover 18 is clamped, the rotary cover limiting boss 15 is matched with the rotary tool position 13 to open the cover in a counterclockwise rotation mode, the spiral cover 18 with different screw pitches in the cover opening process is matched with the corresponding lifting speed of the lifting structure, and the clamping convex points 14 enter the clamping grooves 17, so that the spiral cover 18 can be firmly clamped and lifted at the moment to wait for closing the cover.

And (3) closing the cover: the cap is closed at the descending speed corresponding to the matching of the screw caps 18 with different screw pitches with the lifting structure, meanwhile, the spring 8 is compressed, the cap limiting boss 15 is matched with the rotating tool position 13 to rotate clockwise to close the cap, the rotating body 7 generates a downward pressure due to the compression of the spring 8, the spherical boss 12 generates a certain downward pressure on the wedge-shaped boss 11 under the effect of the downward pressure of the rotating body 7, so that the moment of the whole slipping mechanism in the rotating process is limited to a certain degree, the slipping can be realized when the cap 18 is tightly closed and the contact surface of the rotating body 7 and the rotating shaft head 10 is limited to exceed the moment, the slipping moment can be limited by increasing the quantity of the gaskets 6, the moment limitation of the whole slipping mechanism is adjusted, the cap can be tightly closed, the slipping mechanism can continuously rotate for bottle bodies with different turns under the structure until the cap is closed, and the slipping can occur when the cap is continuously rotated after being tightly closed. When the clamping convex points 14 move to the yielding groove 16 after slipping, the whole slipping mechanism rises to enable the screw cover 18 to be separated from the slipping mechanism, and closing of the cover is completed, meanwhile, the clamping convex points 17 of the screw cover 18 just rotate to the yielding groove 16, the slipping mechanism is driven to rise again, the clamping convex points 17 slide out through the yielding groove 16, and separation of the screw cover 18 and the clamping structure is completed.

By adopting the technical scheme, the utility model discloses can gain following technological effect: 1. the clamping part is matched with the rotary cover 18, so that the use of the clamping jaw is omitted, the clamp is suitable for smaller space, and compared with the mode that the rotary cover 18 is directly clamped by a clamping claw, the clamp has higher compatibility and more compact structure, moving parts are reduced, and the stability is improved; 2. through the cooperation of spherical boss 12, wedge and elastic component, formed the structure of skidding for in the in-process of closing the lid, after screwing, because resistance moment is greater than the overdraft of spring 8, make spherical boss 12 and wedge skid, prevent to continue to rotate down to cause the injury to spiral cover 18. 3. A special bidirectional slipping mechanism is adopted, the torque can be adjusted according to the number of threads or screw teeth of the screw cap 18, and compared with a friction slipping mechanism, the bidirectional slipping mechanism is more quantifiable, controllable and more compact in structure; 4. the slip torque is adjusted by increasing or reducing the gaskets 6, the operation is simple, the cost is low, and compared with a friction slip mechanism, the friction slip mechanism is more quantifiable, controllable and more compact in structure.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

Claims (9)

1. The utility model provides a no clamping jaw's spiral cover mechanism of skidding, includes the rotating part, its characterized in that still includes: a clamping part, wherein,

the rotating part is suitable for being connected with an external driving device and comprises a rotating body used for driving the clamping part to rotate, and the rotating body is provided with a spherical boss;

the clamping part comprises a rotary shaft head, and the rotary shaft head comprises a clamping structure and a wedge-shaped boss, wherein the clamping structure is suitable for being clamped and limited from the middle of the top of the rotary cover;

the spherical boss is connected with the wedge-shaped boss and is configured to slip with the wedge-shaped boss when the reverse torque force of the screw cap on the clamping part exceeds a preset value.

2. The cap-spinning slipping mechanism of claim 1, wherein the rotating part further comprises a rotating connecting shaft, a rotating inner head and an elastic member, one end of the rotating connecting shaft is adapted to be connected to an external driving device, and the other end is connected to the rotating inner head; the other end of the rotating inner head is connected with the rotating body, and the elastic piece is arranged between the rotating body and the rotating inner head; the rotator is kept away from the tip of rotatory inner head is provided with a plurality of around circumference evenly distributed's spherical boss, just spherical boss is suitable for and is connected with joint portion.

3. The cap-spinning slippage mechanism of claim 2, wherein said rotating inner head is provided with a sliding slot, said rotating inner head is connected to said rotating body by a rotating detent, and said rotating detent is disposed in said sliding slot, such that said rotating body is displaceable relative to said rotating inner head.

4. The gridless screw cap slippage mechanism of claim 2 wherein said wedge boss is beveled on both sides and said ball boss is inserted into the gap between two adjacent wedge bosses, said ball boss being configured to slide along the beveled surfaces of said wedge bosses when subjected to an upward torque force greater than the downward pressure of said elastic member.

5. A jaw-less cap-spinning slip mechanism as claimed in claim 2, wherein said resilient member is a spring having at least one spacer disposed between it and said rotating inner head.

6. A jaw-less cap-spinning slip mechanism as claimed in claim 2, wherein said resilient member is externally provided with a housing, said housing being secured to said rotatable spindle head by a resilient bayonet lock.

7. The gridless cap screwing slippage mechanism of claim 2, wherein said snap-fit structure comprises a gripping groove and a plurality of relief grooves evenly distributed around the circumference and a cap screwing limiting boss, said gripping groove is adapted to grip a detent bump on a cap screw, said relief grooves are adapted to allow said detent bump to enter or exit said gripping groove; the spiral cover limiting boss is suitable for being matched with a rotary tool arranged on the spiral cover so as to drive the spiral cover to rotate.

8. A spiral cover, characterized by, be suitable for to match the no clamping jaw spiral cover skidding mechanism of claim 7, the top of spiral cover is provided with be suitable for joint structure male recess, and be provided with in the recess be used for with chucking groove and the groove assorted screens bump of stepping down, the outside setting of recess be used for with spiral cover restriction boss assorted rotatory frock position.

9. A closure opening and closing device comprising a jaw-free closure slipping mechanism according to any one of claims 1 to 7 and drive means connected to said rotatable portion for driving rotation of said rotatable portion.

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