CN216651610U - Spiral lifting type bead fork screw assembly - Google Patents

Abstract

The utility model relates to a spiral over-and-under type pearl fork spiral shell subassembly belongs to the field of cosmetics container, and it includes spiral, fork and the pearl that outside-in overlaps in proper order and establish, be equipped with the guide slot on the fork, the spiral inner wall is equipped with the helicla flute, be equipped with the hangers on the pearl, the guide slot and helicla flute are passed simultaneously to the hangers, be equipped with balanced structure between spiral and the fork and/or between spiral and the pearl and/or between fork and the pearl, balanced structure is used for maintaining the torsion balance when spiral, pearl and fork three relative motion. In the process that the user controls the beads to lift, the existence of the balance structure enables the helix and the fork, the helix and the beads and the fork and the beads to have stable torque force feedback to the user when moving relatively, so that the purpose of improving the operation hand feeling is achieved.

Description

Spiral lifting type bead fork screw assembly

Technical Field

The application relates to the field of cosmetic containers, in particular to a spiral lifting type bead fork screw assembly.

Background

In cosmetics, such as lipstick, lipstick and other paste bodies need to be stored and pushed by a bead fork screw assembly.

The bead fork screw assembly in the related technology comprises a screw, a fork and a bead which are sequentially sleeved from outside to inside, wherein one end of the fork is fixedly installed on a base which is held by an operator and used for applying force, the screw and the base rotate relatively, and a cosmetic cream body is positioned in the bead; the spiral inner wall is provided with the helicla flute, is provided with the guide slot on the fork, and the guide slot is crisscross with the helicla flute, is fixed with the lug on the pearl lateral wall, and the lug passes guide slot and helicla flute simultaneously, and when spiral and fork relative rotation, the cell wall of helicla flute carries out the butt to the lug and promotes for the pearl moves along the relative fork of length direction of guide slot, thereby realizes the mobility control to the pearl.

The spiral, the fork and the beads are cylindrical, and the side walls of the spiral, the fork and the beads are sequentially attached to each other due to the fact that the spiral, the fork and the beads are sequentially sleeved, and dynamic surface contact is generated between the inner wall of the spiral and the outer wall of the fork and between the inner wall of the fork and the outer wall of the beads in the process of controlling the beads to ascend and descend. And under actual conditions, stable true circularity and axiality can not all be guaranteed to three's lateral wall face, leads to the pearl lift in-process axiality relatively poor among the three, has great frictional force and frictional force inconsistent each other to cause the user to be difficult to obtain even moment of torsion feedback when rotating spiral and fork, influence and use and feel.

Disclosure of Invention

In order to improve the above problem, the present application provides a spiral over-and-under type pearl fork spiral subassembly.

The application provides a spiral over-and-under type pearl fork spiral shell subassembly adopts following technical scheme:

the spiral lifting type bead fork screw assembly comprises a spiral, a fork and beads, wherein the spiral, the fork and the beads are sequentially sleeved from outside to inside, a guide groove is formed in the fork, a spiral groove is formed in the inner wall of the spiral, a hanging lug is arranged on the beads and penetrates through the guide groove and the spiral groove, a balance structure is arranged between the spiral and the fork and/or between the spiral and the beads and/or between the fork and the beads, and the balance structure is used for maintaining the balance of torsion force when the spiral, the beads and the fork move relatively.

By adopting the technical scheme, in the process that the spiral and the fork rotate relatively, the groove wall of the spiral groove pushes the hanging lug to move along the guide groove, and the existence of the balance structure enables the spiral and the fork and/or the spiral and the bead and/or the fork and the bead to be adjusted adaptively according to the using state of the bead fork screw component when the spiral and the fork and/or the spiral and the bead move relatively, so that a user has stable torque force feedback, and the purpose of improving the operation hand feeling is achieved.

Preferably, the balance structure arranged between the fork and the bead comprises an elastic contact body, the elastic contact body is connected with the bead, and the elastic contact body is in line contact or point contact with the inner wall of the fork.

Preferably, the inner wall of the fork is provided with a guide rib, the elastic contact body comprises a friction rib arranged on a bead, and the guide rib and the friction rib form point contact.

Through adopting above-mentioned technical scheme, the direction rib had both improved the structural strength of fork, and the direction rib is used for constituting the point contact with the friction muscle simultaneously, compares in the mode of face contact that frictional force is littleer.

Preferably, the balance structure arranged between the fork and the bead further comprises a balance ring rib, the balance ring rib is positioned on the outer wall of the bead, and the balance ring rib and the guide rib form point contact.

Through adopting above-mentioned technical scheme, the common butt direction rib of balanced ring muscle and friction muscle can further improve the stability of the relative fork removal in-process of pearl, reduces the swing range of pearl.

Preferably, the bead is connected with a connecting part, the elastic contact body is connected with the bead through the connecting part, and a deformation gap is reserved between the elastic contact body and the bead.

Through adopting above-mentioned technical scheme, under the condition that deformation clearance exists, connecting portion can regard as the cantilever of friction muscle, make the elastic contact body can be relatively independent of the pearl and take place to warp outward, and the shape change of connecting portion and elastic contact body can make the strong and weak of the looks butt effect of elastic contact body and fork change, and the frictional force size between pearl and the fork promptly to required moment of torsion size when can supply the user to adjust the reciprocal motion between the two.

Preferably, the elastic contact body is provided with a buffer notch.

Through adopting above-mentioned technical scheme, elastic contact accessible buffering breach carries out the plasticity of certain range and bends, and carries out certain plasticity to elastic contact and buckle the looks butt degree that can change elastic contact and fork inner wall, reaches the purpose that required torsion is big or small when changing relative motion between fork and the pearl, and simultaneously, the existence of connecting portion has improved the convenient degree and the sensitivity that the friction muscle carries out the plasticity and adjusts.

Preferably, the elastic contact body is in point contact with the inner wall of the fork, the elastic contact body comprises a plurality of reed points, the reed points are arranged on the outer side wall of the bead and are abutted to the inner wall of the fork.

Through adopting above-mentioned technical scheme, the inner wall of fork is applyed to a plurality of reed points butt, is equivalent to the fork and applys coaxial thrust in a plurality of positions on the pearl, compares in face contact or line contact, and the point contact makes the frictional force between fork and the pearl littleer, and because the reed point has a plurality ofly, even the butt state of individual reed point and fork inner wall changes, remaining reed point also can compensate the friction variation to moment stability when reaching the relative motion between improvement pearl and the fork.

Preferably, be line contact between elastic contact body and the fork inner wall, elastic contact body includes the butt muscle, butt muscle and fork inner wall butt.

Through adopting above-mentioned technical scheme, the butt muscle makes to form the effect that whole linearity was exerted pressure between pearl and the fork with the butt state of fork inner wall, and the line of exerting pressure makes to produce the frictional state of butt between pearl and the fork, and the axiality when having improved pearl and fork relative motion to frictional force fluctuation degree between the two is less in the messenger use.

Preferably, the balance structure arranged between the fork and the bead comprises a clamping protrusion and a deformation opening, the fork is communicated with positioning grooves at the head end parts and the tail end parts of the guide grooves, the clamping protrusion is positioned on the groove wall communicated with the guide grooves, and the clamping protrusion abuts against the hanging lugs when the hanging lugs cross the clamping protrusion from the guide grooves to enter the positioning grooves; the deformation opening is opened on the fork and is located by the screens arch.

By adopting the technical scheme, after the hanging lug crosses the clamping bulge and enters the positioning groove, the hanging lug is abutted by the groove wall of the positioning groove and the clamping bulge together, and the clamping bulge forms a certain backstop limiting effect on the hanging lug, so that the hanging lug cannot easily leave the positioning groove, and the position stability of the beads is improved; and when the hangers touched the protruding butt of taking place of screens, the deformation breach can provide great deformability for the protruding department of screens, and the bellied size alright increase of screens during the preparation to make the user rotate the pearl and have obvious beat and feel the feedback when targetting in place, but be unlikely to experience great resistance and bite, reach the effect that improves and feel.

Preferably, the balance structure arranged between the bead and the spiral comprises a balance wedge surface, when the bead ascends, the groove wall of the spiral groove is in point contact with the hanging lug, and when the bead descends, the groove wall of the spiral groove is in surface contact with the balance wedge surface.

Through adopting above-mentioned technical scheme, during the use, at the in-process that rises the pearl, the gravity of pearl is the resistance, and at the in-process that the pearl descends, the gravity of pearl is the boosting power, and the area of increase contact surface is convenient for increase frictional force, can increase the moment of torsion when the pearl descends, and the feeling when reducing the user operation is different.

Preferably, the balance structure arranged between the fork and the spiral comprises a clamping annular rib, the clamping annular rib is coaxially arranged on the outer wall of the fork, and the clamping annular rib is abutted against the inner wall of the spiral.

Preferably, the balance structure arranged between the fork and the spiral further comprises a balance convex ring, the balance convex ring is coaxially arranged on the inner wall of the spiral, and the balance convex ring is abutted to the outer wall of the fork.

Through adopting above-mentioned technical scheme, the joint ring muscle carries out balanced support to spiral and fork jointly with balanced bulge loop, improves the axiality when the two rotates relatively, has also reduced the possibility that takes place the face contact between spiral and the fork.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the setting of the balanced structure between pearl and the fork, at the pearl in the in-process that the fork removed, elastic contact body and balanced annular muscle all rub the butt mutually with the direction muscle, and the butt department is the point contact, and the contact point has a plurality ofly, and clamping-force is applyed to the pearl jointly to a plurality of contact points to have higher atress equilibrium and less frictional force when making the relative fork of pearl remove.

2. Through the setting of the balanced structure between spiral and the fork, at the relative fork pivoted in-process of spiral, the joint ring muscle between fork and the spiral makes the coaxial butt of the two jointly with balanced bulge loop, and butt department is the line contact state, because joint ring muscle and balanced bulge loop encircle in the whole gap of fork and spiral, so at the two pivoted in-process joint ring muscle and balanced bulge loop make the butt power distribution between spiral and the fork stable even.

3. Through the setting of the balanced structure between spiral and the pearl, during the use, at the in-process that rises the pearl, the gravity of pearl is the resistance, and at the in-process that the pearl descends, the gravity of pearl is the boosting power, and the area of increase contact surface is convenient for increase frictional force, and the torsion difference on feeling when reducing user's operation pearl and going up and down.

Drawings

Fig. 1 is an exploded view of a structure for embodying a spiral elevating type bead fork screw assembly according to an embodiment of the present application.

Fig. 2 is a schematic view illustrating a state that a bead is located at an end of the fork away from the base in the first embodiment of the present application.

Fig. 3 is a schematic structural diagram for embodying a fork in the first embodiment of the present application.

Fig. 4 is a schematic structural diagram for embodying beads in the first embodiment of the present application.

FIG. 5 is a schematic structural diagram of a bead according to example II of the present application.

Fig. 6 is a schematic structural diagram for embodying beads in the third embodiment of the present application.

FIG. 7 is a schematic structural diagram of a bead according to example four of the present application.

Description of reference numerals: 1. spiraling; 11. a helical groove; 12. a balancing convex ring; 2. a fork; 21. a guide groove; 211. positioning a groove; 212. a clamping bulge; 213. opening the deformation; 22. clamping the ring rib; 23. a guide rib; 3. beads; 31. hanging a lug; 311. a balancing wedge surface; 32. an elastic contact body; 321. a connecting portion; 322. rubbing ribs; 323. a buffer gap; 324. abutting against the rib; 325. reed points; 33. balancing ring ribs; 4. and (4) a balance structure.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The first embodiment is as follows:

the embodiment of the application discloses spiral over-and-under type pearl fork spiral subassembly, as shown in figure 1, including all being pipy spiral 1, fork 2 and pearl 3, and spiral 1, fork 2 and pearl 3 are in proper order from outside to inside coaxial cover each other establish. One end of the fork 2 is fixedly arranged on the base, the spiral 1 and the fork 2 rotate relatively, the inner side of the bead 3 is used for containing a cosmetic paste, and the relative rotation of the spiral 1 and the fork 2 can control the movement of the bead 3. Balance structures 4 are arranged between the spiral 1 and the fork 2, between the fork 2 and the bead 3 and between the bead 3 and the spiral 1, and the balance structures 4 are used for maintaining the torsion balance when the spiral 1, the bead 3 and the fork 2 move relatively when the user operates.

As shown in figure 1, the spiral 1 and the fork 2 are both cylindrical, and the spiral 1 is coaxially sleeved outside the fork 2. The balance structure 4 between the spiral 1 and the fork 2 comprises a clamping ring rib 22 and a balance convex ring 12, the clamping ring rib 22 and the balance convex ring 12 are positioned between the spiral 1 and the fork 2, and the clamping ring rib 22 and the balance convex ring 12 can be selected to be fixedly connected between the spiral 1 and the fork 2. In the embodiment, the clamping ring rib 22 is coaxially and integrally formed on the outer wall of the fork 2, the balance convex ring 12 is coaxially and integrally formed on the inner wall of the spiral 1, the clamping ring rib 22 is abutted to the inner wall of the spiral 1 in a fitting manner, and the balance convex ring 12 is abutted to the outer wall of the fork 2 in a fitting manner; the snap ring rib 22 is located at the position where the fork 2 is close to the base, and the balance convex ring 12 is located at the position where the spiral 1 is far away from the base. The abutting action between the spiral 1 and the fork 2 of the clamping ring rib 22 and the balancing convex ring 12 enables the two to have higher coaxiality when rotating relatively, and reduces the possibility of relative deflection of the two.

As shown in fig. 1 and 2, two centrosymmetric spiral grooves 11 are formed on the inner wall of the spiral 1, guide grooves 21 are formed on the fork 2 along the length direction of the fork, lugs 31 are integrally formed on the outer wall of the bead 3, and the number of the guide grooves 21 and the number of the lugs 31 are two; the hanging lug 31 penetrates through the guide groove 21 and is inserted into the spiral groove 11, in the process that the spiral 1 and the fork 2 rotate relatively, the groove wall of the spiral groove 11 is abutted to the hanging lug 31 and exerts oblique thrust on the hanging lug, and the guide groove 21 conducts direction guiding and circumferential limiting on the hanging lug 31, namely the guide groove 21 and the spiral groove 11 are matched together to enable the beads 3 to move along the length direction of the fork 2.

As shown in fig. 1 and 2, the balance structure 4 between the spiral 1 and the bead 3 is a balance wedge surface 311, the balance wedge surface 311 is formed on the hanging lug 31, the balance wedge surface 311 faces the groove wall of the spiral groove 11 relatively far away from the base, and the balance wedge surface 311 is parallel to the wall surface of the groove wall. The hanging lug 31 is an oblate cylindrical protrusion, when a user rotates the base to control the bead 3 to move away from the base, the groove wall of the spiral groove 11 close to the base is abutted with the peripheral wall of the hanging lug 31 to apply thrust to the bead 3, the groove wall of the spiral groove 11 at the abutting position is tangent to the side wall of the hanging lug 31, the contact state is almost point contact, and the upward component force of the thrust is required to be larger than the self weight of the bead 3; when the user rotated base control pearl 3 and moved towards the base, because the dead weight of the pearl 3 that is carrying the cosmetics lotion can regard as one of the propulsive force that pearl 3 removed, it has reduced the thrust demand that pearl 3 removed, the cell wall and the balanced scarf 311 laminating contact of helicla flute 11, the stress surface of hangers 31 is whole balanced scarf 311 promptly, the stress surface increases, the friction torque has been improved, the torsion difference when having reduced the user to control 3 two-way movement of pearl promptly, improved and used and felt.

As shown in fig. 1 and 2, the groove walls at the two end portions of the guide groove 21 are respectively communicated with a positioning groove 211, the two positioning grooves 211 of the same guide groove 21 are respectively located on the groove walls at the head end and the tail end of the guide groove 21, the balance structure 4 between the fork 2 and the beads 3 comprises a clamping protrusion 212, the clamping protrusion 212 is integrally formed on the groove wall at the connection portion of one of the guide groove 21 and the positioning groove 211, and the appearance of the clamping protrusion 212 enables the channel width at the connection portion of the guide groove 21 and the positioning groove 211 to be slightly smaller than the radial size of the hanging lug 31. When the beads 3 are moved to the end of the guide groove 21, the user can feel a click feeling for prompting the user that the beads 3 are moved to the proper position and the beads 3 are not easily displaced in the direction of the guide groove 21 in the state where the hanging lugs 31 are located in the positioning grooves 211 when the user moves the click projections 212 into the positioning grooves 211.

As shown in fig. 2 and 3, since the hanging lug 31 and the retaining protrusion 212 can be squeezed in the process of abutting against each other, the balance structure 4 between the fork 2 and the bead 3 includes the deformation opening 213, the deformation opening 213 is opened on the fork 2 and is located between the end surface of the fork 2 and the retaining protrusion 212, the part of the fork 2 located between the deformation opening 213 and the guide groove 21 is deformed when being abutted against by the hanging lug 31, and the deformation opening 213 provides a deformation space for the part, so as to improve the smoothness of the pushing process and the structural durability of the retaining protrusion 212. By means of the deformation opening 213, the detent protrusion 212 can have a larger size, so as to improve the detent strength when the suspension loop 31 enters the detent groove 211, and meanwhile, the requirement for pushing force is low.

As shown in fig. 1, 3 and 4, the balance structure 4 between the fork 2 and the bead 3 is a guide rib 23 and a resilient contact 32, the guide rib 23 is integrally formed on the inner wall of the fork 2, and the resilient contact 32 is located at one end of the bead 3 facing the base. The length direction of direction rib 23 is unanimous with the length direction of fork 2, and elastic contact body 32 includes friction muscle 322 in this embodiment, and friction muscle 322 is for being long banding annular protruding muscle, and its length direction is the circumference of pearl 3, is provided with connecting portion 321 on the pearl 3, and connecting portion 321 is located between friction muscle 322 and the pearl 3 and three integrated into one piece, and friction muscle 322 just is used for with the direct butt of direction rib 23.

As shown in fig. 1 and 3, the balance structure 4 between the fork 2 and the bead 3 further includes a balance ring rib 33, the balance ring rib 33 is coaxially and integrally formed on the outer wall of the bead 3, the balance ring rib 33 is abutted to the inner wall of the fork 2, and the balance ring rib 33 is located at the port close to the end of the bead 3 far away from the base, i.e. the balance ring rib 33 is far away from the friction rib 322. The balance ring rib 33 is also abutted against the guide rib 23, and since the length directions of the balance ring rib 33 and the friction rib 322 are consistent and are perpendicular to the length direction of the guide rib 23, the abutting states of the balance ring rib 33 and the friction rib 23 are point contacts, and since each contact point is located at a position close to the port of the bead 3, the coaxiality of the bead 3 and the fork 2 in the moving process along the guide rib 23 can be maintained together.

As shown in fig. 3 and 4, the friction rib 322 does not form a complete ring, and two buffering gaps 323 are formed on the friction rib 322, so that two connecting portions 321 are also provided; meanwhile, the connection part 321 enables a deformation gap to be formed between the friction rib 322 and the bead 3, the elastic contact body 32 can have a certain range of elastic deformation space in the radial direction of the column due to the existence of the deformation gap and the buffer notch 323, and the size of the friction rib 322 and the connection part 321 is adjusted due to the fact that the material per se has certain plasticity, so that the initial extrusion force between the elastic contact body 32 and the guide rib 23 is changed, namely, the friction force borne by the elastic contact body 32 when the bead 3 is pushed is adjusted according to the requirement of a user. During the sliding of the bead 3 with respect to the fork 2, there is a point contact between the spring contact 32 and the guide rib 23.

As shown in fig. 1 and 4, since the movement of the hanging lug 31 between the guide groove 21 and the positioning groove 211 is accompanied by the rotation of the beads 3, the arrangement position of the guide rib 23 should be ensured so as not to be separated from the elastic contact body 32, i.e., so that the guide rib 23 does not enter the buffering notch 323. In order to make the friction rib 322 evenly transmit the friction force of the bead 3, the connecting part 321 is located in the middle of the friction rib 322, therefore, the hanging lug 31 and the connecting part 321 on the bead 3 are not located on the plain line of the same bead 3, and the hanging lug 31 is not located on the parting surface of the forming mold, so that the guide rib 23 can be more evenly distributed in the fork 2 along the circumferential direction of the fork 2 due to the design, and meanwhile, parting flash generated when the mold is opened can not occur on the hanging lug 31, so that the friction force between the guide rib and the spiral 1 is unstable. In the present embodiment, the number of the guide ribs 23 is four.

In this embodiment, the balance structure 4 between the bead 3 and the fork 2, the balance structure 4 between the fork 2 and the spiral 1, and the balance structure 4 between the spiral 1 and the bead 3 all play roles of balancing torque and improving use hand feeling, so that the three can exist independently, and can also be selectively combined for use.

The implementation principle of the spiral lifting type bead fork screw assembly provided by the embodiment of the application is as follows:

firstly, the beads 3 are inserted into the fork 2 from one end, far away from the base, of the fork 2, the hanging lugs 31 enter the guide grooves 21, then the spiral 1 is sleeved outside the fork 2, the hanging lugs 31 are inserted into the spiral grooves 11, finally, the end portion of the fork 2 is inserted into the base, and the bead fork screw assembly is assembled. When the base is rotated, the fork 2 rotates along with the base, the hanging lug 31 moves along the guide groove 21 under the pushing of the groove wall of the spiral groove 11, the bead 3 cannot continue to move away from the base when the hanging lug 31 enters the positioning groove 211 far away from the base, the bead 3 cannot continue to move close to the base when the hanging lug 31 enters the positioning groove 211 close to the base, and the balance structure 4 at each position in the whole process maintains the moment balance of the relative motion among the spiral 1, the fork 2 and the bead 3.

Example two:

as shown in fig. 5, the difference from the first embodiment is that the elastic contact 32 in the present embodiment includes an abutting rib 324, the abutting rib 324 is an annular convex rib integrally formed on the outer wall of the bead 3, and the length direction of the abutting rib is the circumferential direction of the bead 3; and the inner wall of the fork 2 is not provided with the guide rib 23 (not shown in the figure), when the bead 3 slides in the fork 2, the bead 3 and the fork 2 are in line contact friction through the butt joint of the butt joint rib 324 and the inner wall of the fork 2. The number of the abutting ribs 324 is not limited, and if the number thereof is one, it may be located at the middle portion in the axial direction of the bead 3, and if the number of the abutting ribs 324 is plural, it may be uniformly arranged along the axial direction of the bead 3, and in this embodiment, the number of the abutting ribs 324 is two.

The implementation principle of the spiral 1 lifting type bead fork screw assembly is as follows:

in the process that the bead 3 slides along the fork 2, the abutting state of the abutting ribs 324 and the inner wall of the fork 2 enables the fork 2 to form an integral linear pressure applying effect on the bead 3, the pressure applying line enables the abutting friction state to be generated between the bead 3 and the fork 2, and the abutting ribs 324 are located at different positions in the length direction of the bead 3, so that the coaxiality of the bead 3 and the fork 2 in the relative movement process is improved, and the friction force fluctuation degree between the bead 3 and the fork 2 in the use process is smaller.

Example three:

as shown in fig. 6, the difference from the first or second embodiment is that the elastic contact 32 in this embodiment includes a plurality of spring points 325, the spring points 325 are uniformly formed on the side wall of the bead 3, the connection portion 321 is no longer provided on the bead 3, and the guide rib 23 is not provided on the inner wall of the fork 2. When the bead 3 is positioned in the fork 2 to slide, the reed point 325 is dynamically abutted with the inner wall of the fork 2, namely the bead 3 and the fork 2 form point contact through the reed point 325; in this embodiment, reed points 325 are eight in number and are equally distributed at two different positions along the axis of bead 3. Similar to the embodiment, reed points 325 are distributed such that reed points 325 avoid channel 21 during movement of beads 3.

The implementation principle of the spiral lifting type bead fork screw assembly is as follows:

reed points 325 exist at different axial or circumferential locations on bead 3, subject to multiple points of pressure from fork 2, and transmit this pressure to bead 3, corresponding to fork 2 exerting coaxial thrust on bead 3 at multiple locations, point contact making the friction between fork 2 and bead 3 less and the sliding process more fluid than surface or line contact.

Example four:

as shown in fig. 7, the elastic contact 32 in this embodiment is still a reed point 325, and the reed point 325 abuts against the inner wall of the fork 2 and forms a point contact, but the reed point 325 is no longer disposed on the outer sidewall of the bead 3; one end of the bead 3 is integrally formed with a cantilever structure similar to the connecting portion 321 and the friction rib 322 in the first embodiment, and the reed point 325 is located at the edge of the cantilever structure. The effect of the above arrangement is the same as the effect exerted by the connecting portion 321 in the first embodiment, and is not described herein again.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (12)

1. The utility model provides a spiral over-and-under type pearl fork spiral shell subassembly, includes spiral (1), fork (2) and pearl (3) that outside-in overlaps in proper order and establish, be equipped with guide slot (21) on fork (2), spiral (1) inner wall is equipped with helicla flute (11), be equipped with hangers (31) on pearl (3), guide slot (21) and helicla flute (11), its characterized in that are passed simultaneously in hangers (31): and a balance structure (4) is arranged between the spiral (1) and the fork (2), and/or between the spiral (1) and the bead (3), and/or between the fork (2) and the bead (3), and the balance structure (4) is used for maintaining the torsion balance when the spiral (1), the bead (3) and the fork (2) move relatively.

2. The screw-jack assembly of claim 1, wherein: locate balanced structure (4) between fork (2) and pearl (3) include elastic contact body (32), elastic contact body (32) are connected with pearl (3), elastic contact body (32) and fork (2) inner wall form line contact or point contact.

3. The screw-jack bead pronged assembly according to claim 2, wherein: fork (2) inner wall is equipped with direction muscle strip (23), elastic contact body (32) including locating friction muscle (322) on pearl (3), direction muscle strip (23) and friction muscle (322) form the point contact.

4. The screw-jack assembly of claim 3, wherein: locate balanced structure (4) between fork (2) and pearl (3) still include balanced annular muscle (33), balanced annular muscle (33) are located the outer wall of pearl (3), balanced annular muscle (33) and direction rib (23) form the point contact.

5. The screw-jack assembly of claim 3, wherein: the bead (3) is connected with a connecting part (32), the elastic contact body (32) is connected with the bead (3) through the connecting part (321), and a deformation gap is reserved between the elastic contact body (32) and the bead (3).

6. The screw-jack bead pronged assembly according to claim 5, wherein: the elastic contact body (32) is provided with a buffer notch (323).

7. The screw-jack assembly of claim 2, wherein: be the point contact between elastic contact body (32) and fork (2) inner wall, elastic contact body (32) include reed point (325), reed point (325) are equipped with a plurality ofly and set up on the lateral wall of pearl (3), reed point (325) and fork (2) inner wall looks butt.

8. The screw-jack assembly of claim 2, wherein: be the line contact between elastic contact body (32) and fork (2) inner wall, elastic contact body (32) include butt muscle (324), butt muscle (324) and fork (2) inner wall butt.

9. The screw-jack assembly of any one of claims 1-8, wherein: the balance structure (4) arranged between the fork (2) and the beads (3) comprises clamping protrusions (212) and deformation openings (213), the head end and the tail end of the guide groove (21) on the fork (2) are communicated with positioning grooves (211), the clamping protrusions (212) are positioned on the groove walls of the positioning grooves (211) communicated with the guide groove (21), and the clamping protrusions (212) are abutted to the lugs (31) when the lugs (31) pass through the positioning grooves (21) and enter the positioning grooves (211) after passing over the clamping protrusions (212);

the deformation opening (213) is arranged on the fork (2) and is positioned beside the clamping protrusion (212).

10. The screw-jack assembly of any one of claims 1-8, wherein: the balance structure (4) arranged between the bead (3) and the spiral (1) comprises a balance wedge surface (311), the balance wedge surface (311) is arranged on the hanging lug (31), and the area of the contact surface between the groove wall of the spiral groove (11) and the hanging lug (31) when the bead (3) ascends is smaller than that of the contact surface between the groove wall of the spiral groove (11) and the hanging lug (31) when the bead (3) descends.

11. The screw-jack assembly of any one of claims 1-8, wherein: locate balanced structure (4) between fork (2) and spiral (1) include block ring muscle (22), block ring muscle (22) coaxial setting is in the outer wall of fork (2) or the inner wall of spiral (1), fork (2) are through block ring muscle (22) and spiral (1) butt.

12. The screw-jack assembly of claim 11, wherein: locate balanced structure (4) between fork (2) and spiral (1) still include balanced bulge loop (12), balanced bulge loop (12) coaxial setting is in the inner wall of spiral (1) or the outer wall of fork (2), fork (2) are through balanced bulge loop (12) and spiral (1) butt.

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