Rotary reciprocating motion structure and juicer

Abstract

The utility model relates to the technical field of juicers, in particular to a rotary reciprocating motion structure and a juicer, the rotary reciprocating motion structure comprises a sleeve assembly, a screw assembly, a one-way rotary assembly and a lower one-way rotary assembly, the screw assembly can rotate and reciprocate relative to the sleeve assembly, one end of the sleeve assembly is provided with an upper rotation stop position, and the other end of the sleeve assembly is provided with a lower rotation stop position. When the screw assembly moves to the upper rotation stopping position, the screw assembly is connected with the sleeve assembly and connected to the lower one-way rotating assembly to rotate together, so that the screw assembly and the sleeve assembly can continuously rotate together at the upper rotation stopping position, the other end of the sleeve assembly is provided with a lower rotation stopping position, and when the screw assembly moves to the lower rotation stopping position, the lower one-way rotating assembly rotates together. The screw assembly is connected with the sleeve assembly and connected to the upper one-way rotating assembly to rotate together, so that the screw assembly and the sleeve assembly can continuously rotate together at the lower rotation stop position, continuous rotation at the highest point and the lowest point can be achieved, the juice yield of citrus fruits can be increased, and especially the juicing effect on lemons with tough fibers is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of juicers, in particular to a rotary reciprocating motion structure and a juicer. Background Art

[0002] In the existing juicers, the control of the stroke of the internal transmission parts is mostly achieved by using limit switches. For example, the patent application number is 202221252132.X, and the patent name is a juicer patent. By providing an upper limit switch and a lower limit switch on the base, the lifting rod moves between the upper limit switch and the lower limit switch, so as to prevent the lifting rod from moving out of the range, thereby achieving the control of the lifting rod stroke; however, failure or poor soldering of the connector inside the limit switch, and improper assembly of the limit switch can affect the detection accuracy of the limit switch, thereby affecting the accuracy of the transmission part stroke control, and then affecting the reliability and juice yield of the whole machine. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a rotary reciprocating motion structure and a juicer, which can improve the juice yield of citrus fruits, especially greatly improve the juicing effect of lemons with strong fibers.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0005] A rotary reciprocating motion structure comprises a sleeve assembly, a screw assembly, an upper one-way rotating assembly and a lower one-way rotating assembly, wherein the screw assembly can rotate and reciprocate relative to the sleeve assembly, an upper rotation stop is provided at one end of the sleeve assembly, and a lower rotation stop is provided at the other end of the sleeve assembly, when the screw assembly moves to the upper rotation stop, it is coupled to the sleeve assembly and engaged to the lower one-way rotating assembly to rotate together, when the screw assembly moves to the lower rotation stop, it is coupled to the sleeve assembly and engaged to the upper one-way rotating assembly to rotate together.

[0006] The beneficial effects of the utility model are:

[0007] The present invention provides a sleeve assembly, a screw assembly, an upper one-way rotating assembly and a lower one-way rotating assembly, wherein the screw assembly can rotate and reciprocate relative to the sleeve assembly, an upper rotation stop is provided at one end of the sleeve assembly, and when the screw assembly moves to the upper rotation stop, it is connected to the sleeve assembly and engaged to the lower one-way rotating assembly to rotate together, so that the screw assembly and the sleeve assembly can continuously rotate together at the upper rotation stop, and a lower rotation stop is provided at the other end of the sleeve assembly, and when the screw assembly moves to the lower rotation stop, it is connected to the sleeve assembly and engaged to the upper one-way rotating assembly to rotate together, so that the screw assembly and the sleeve assembly can continuously rotate together at the lower rotation stop, thereby realizing continuous rotation at the highest point and the lowest point, thereby improving the juice yield of citrus fruits, especially greatly improving the juicing effect of lemons with strong fibers; and the present invention adopts a purely mechanical structure, replacing the method of using a limit switch to control the travel of the transmission member in the prior art, so that the reliability of the whole machine can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the screw assembly of the rotary reciprocating motion structure of the utility model at the upper limit position;

[0009] Figure 2 The utility model is a rotary reciprocating motion structure Figure 1 A cross-sectional view of

[0010] Figure 3 It is a structural schematic diagram of the upper limit assembly of the rotary reciprocating motion structure of the utility model;

[0011] Figure 4 The utility model is a rotary reciprocating motion structure Figure 3 A cross-sectional view of

[0012] Figure 5 It is a structural schematic diagram of the lower limit assembly of the rotary reciprocating motion structure of the utility model;

[0013] Figure 6 It is a structural schematic diagram of the sleeve assembly of the rotary reciprocating motion structure of the utility model;

[0014] Figure 7 It is a structural schematic diagram of a threaded pipe of a rotary reciprocating motion structure of the utility model;

[0015] Figure 8 It is a structural schematic diagram of a fixed sleeve of a rotary reciprocating motion structure of the utility model;

[0016] Fig. 9 It is a structural schematic diagram of the upper unidirectional rotating assembly of the rotating reciprocating motion structure of the utility model;

[0017] Fig.10It is a structural schematic diagram of a threaded pipe of a rotary reciprocating motion structure of the utility model;

[0018] Fig.11 It is a structural schematic diagram of a threaded pipe of a rotary reciprocating motion structure of the utility model;

[0019] Fig.12 It is a cross-sectional view of the lower limit assembly and the lower unidirectional rotation assembly of the rotary reciprocating motion structure of the utility model installed together;

[0020] Fig.13 It is a structural schematic diagram of the upper fixing kit of the rotary reciprocating motion structure of the utility model;

[0021] Fig.14 It is a structural schematic diagram of the screw assembly of the rotary reciprocating motion structure of the utility model;

[0022] Fig.15 It is a structural schematic diagram of the screw assembly of the rotary reciprocating motion structure of the utility model at the lower limit position;

[0023] Fig.16 The utility model is a rotary reciprocating motion structure Fig.15 A cross-sectional view of

[0024] Description of labels:

[0025] 1. Sleeve assembly; 11. Threaded tube; 111. Bump; 12. Fixed sleeve; 121. Baffle; 1211. Walking groove; 122. First oil storage tank; 13. Second joint rib; 14. Fourth joint rib; 15. Support ring; 16. Mounting seat; 161. First receiving groove; 1611. Second oil storage groove; 1612. First ball; 162. Second receiving groove; 1621. Third oil storage groove; 1622. Second ball; 17. Through hole;

[0026] 2. Screw assembly; 21. Connecting rod; 22. Threaded seat; 221. Upper rotation stop rib; 222. Lower rotation stop rib;

[0027] 3. Fixing assembly; 31. Upper fixing kit; 311. Limiting groove;

[0028] 4. Upper limit assembly; 41. Upper limit cover; 411. Water storage bottom; 412. Flanging; 413. Water guide pipe; 414. Limit strip; 42. Limit spring; 43. Limit column;

[0029] 5. Lower limit assembly; 51. Lower limit cover; 52. Mounting block; 521. First limit hole;

[0030] 6. Upper one-way rotating assembly; 61. Upper one-way bearing; 62. Upper one-way limiting member; 63. First joint rib;

[0031] 7. Lower one-way rotating assembly; 71. Lower one-way bearing; 72. Lower one-way limit piece. DETAILED DESCRIPTION

[0032] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0033] Please refer to Figure 1 , the first technical solution adopted by the utility model is:

[0034] A rotary reciprocating motion structure comprises a sleeve assembly, a screw assembly, an upper one-way rotating assembly and a lower one-way rotating assembly, wherein the screw assembly can rotate and reciprocate relative to the sleeve assembly, an upper rotation stop is provided at one end of the sleeve assembly, and a lower rotation stop is provided at the other end of the sleeve assembly, when the screw assembly moves to the upper rotation stop, it is coupled to the sleeve assembly and engaged to the lower one-way rotating assembly to rotate together, when the screw assembly moves to the lower rotation stop, it is coupled to the sleeve assembly and engaged to the upper one-way rotating assembly to rotate together.

[0035] From the above description, it can be seen that the beneficial effects of the utility model are:

[0036] The present invention provides a sleeve assembly, a screw assembly, an upper one-way rotating assembly and a lower one-way rotating assembly, wherein the screw assembly can rotate and reciprocate relative to the sleeve assembly, an upper rotation stop is provided at one end of the sleeve assembly, and when the screw assembly moves to the upper rotation stop, it is connected to the sleeve assembly and engaged to the lower one-way rotating assembly to rotate together, so that the screw assembly and the sleeve assembly can continuously rotate together at the upper rotation stop, and a lower rotation stop is provided at the other end of the sleeve assembly, and when the screw assembly moves to the lower rotation stop, it is connected to the sleeve assembly and engaged to the upper one-way rotating assembly to rotate together, so that the screw assembly and the sleeve assembly can continuously rotate together at the lower rotation stop, thereby realizing continuous rotation at the highest point and the lowest point, thereby improving the juice yield of citrus fruits, especially greatly improving the juicing effect of lemons with strong fibers; and the present invention adopts a purely mechanical structure, replacing the method of using a limit switch to control the travel of the transmission member in the prior art, so that the reliability of the whole machine can be greatly improved.

[0037] Furthermore, the lower one-way rotating assembly includes a lower one-way bearing, and the rotation direction of the lower one-way bearing is the same as the rotation direction of the screw assembly when it rotates upward to the stop position.

[0038] Furthermore, the lower one-way rotation assembly also includes a lower one-way limiter, and the lower one-way limiter is used to engage with the sleeve assembly.

[0039] Specifically:

[0040] The sleeve assembly is sleeved on the outside of the lower one-way limit piece, the lower one-way limit piece is sleeved on the outside of the lower one-way bearing and there is an interference fit between the lower one-way limit piece and the lower one-way bearing, the rotation direction of the lower one-way bearing is the same as the rotation direction of the screw assembly when it moves to the upper rotation stop position, when the lower one-way limit piece and the sleeve assembly are connected to each other, the screw assembly moves to the upper rotation stop position and rotates together with the sleeve assembly at the upper rotation stop position.

[0041] A plurality of third engaging ribs are distributed on the outer wall of the lower one-way limiting member, and a plurality of fourth engaging ribs meshing with the third engaging ribs are provided in the inner cavity of the sleeve assembly.

[0042] The shape of the third joining rib may be a right triangle or other shapes.

[0043] The number of the third joining ribs can be reasonably arranged according to actual conditions.

[0044] It can be seen from the above description that by setting a limiting relationship between the lower one-way rotating assembly consisting of the lower one-way bearing and the lower one-way limiting piece and the sleeve assembly, the screw assembly and the sleeve assembly can be separated from the state of rotating together.

[0045] By providing a third engaging rib and providing a plurality of fourth engaging ribs in the inner cavity of the sleeve assembly which are meshed with the third engaging ribs, the rotation can be guided in the direction in which rotation is allowed, thereby achieving complete meshing, so that the two can be easily put together and engaged, and can also be easily separated.

[0046] Furthermore, the sleeve assembly includes a threaded tube, and the screw assembly can rotate and reciprocate relative to the threaded tube.

[0047] Specifically:

[0048] The sleeve assembly includes an internally hollow threaded tube and a fixed sleeve, wherein the opposite ends of the fixed sleeve have openings, a partition is provided between the side walls of the inner cavity of the fixed sleeve, and the partition is arranged at the upper rotation stop position. The partition divides the inner cavity of the fixed sleeve into an upper chamber and a lower chamber, and one end of the threaded tube extends into the lower chamber and is fixedly connected to the lower chamber.

[0049] Furthermore, the screw assembly includes a connecting rod and a threaded seat, the connecting rod is connected to the threaded seat, the threaded seat is provided with an external thread, and the inner cavity side wall of the threaded tube is provided with an internal thread that cooperates with the external thread.

[0050] Furthermore, an upper rotation stop rib is provided on an end surface of the threaded seat close to the upper rotation stop position, and the upper rotation stop rib is used to connect the sleeve assembly.

[0051] Specifically:

[0052] An upper rotation stop rib is provided on one end face of the threaded seat near the upper rotation stop position, and a lower rotation stop rib is provided on one end face of the threaded seat near the lower rotation stop position. A walking through groove is penetrated through the partition and cooperates with the upper rotation stop rib. The distance from the highest point of the upper rotation stop rib to the end face of the threaded seat near the upper rotation stop position is greater than the thickness of the partition. A protrusion is provided on the lower rotation stop position of the inner cavity of the threaded tube and cooperates with the lower rotation stop rib.

[0053] The number of the upper rotation stopping ribs and the lower rotation stopping ribs can be one, two or three, and the number can be reasonably arranged according to actual conditions.

[0054] The upper rotation stopping rib and the lower rotation stopping rib may both be in the shape of a right triangle or a trapezoid or other shapes.

[0055] From the above description, it can be seen that the threaded seat of the screw assembly moves upward along the first rotation direction (i.e., clockwise) in the inner cavity of the threaded tube. After the upper rotation stop rib on the threaded seat moves into the traveling groove and engages with it, the threaded seat can no longer continue to rise and can only rotate in situ. At this time, the threaded seat, the threaded tube and the fixed sleeve rotate together along the first rotation direction (i.e., clockwise); similarly, when the threaded seat of the screw assembly moves downward along the second rotation direction (i.e., counterclockwise) in the inner cavity of the threaded tube, after the lower rotation stop rib on the threaded seat engages with the protrusion, the threaded seat can no longer descend and can only rotate in situ. At this time, the threaded seat, the threaded tube and the fixed sleeve rotate together along the second rotation direction (i.e., counterclockwise).

[0056] Furthermore, the upper one-way rotating assembly includes an upper one-way bearing, and the rotation direction of the upper one-way bearing is the same as the rotation direction of the screw assembly when it rotates downward to the stop position.

[0057] Furthermore, the upper one-way rotation assembly also includes an upper one-way limiter, and the upper one-way limiter is used to engage with the sleeve assembly.

[0058] Specifically:

[0059] The sleeve assembly is sleeved on the outside of the upper one-way limit piece, the upper one-way limit piece is sleeved on the outside of the upper one-way bearing and there is an interference fit between the upper one-way limit piece and the upper one-way bearing, the rotation direction of the upper one-way bearing is the same as the rotation direction of the screw assembly when it moves to the lower rotation stop position, when the upper one-way limit piece and the sleeve assembly are disengaged from each other and the lower one-way limit piece and the sleeve assembly are connected to each other, the screw assembly and the sleeve assembly rotate together at the upper rotation stop position, when the upper one-way limit piece and the sleeve assembly are connected to each other and the lower one-way limit piece and the sleeve assembly are disengaged from each other, the screw assembly and the sleeve assembly rotate together at the lower rotation stop position.

[0060] A plurality of first engaging ribs are distributed on the outer wall of the upper one-way limiting member, and a plurality of second engaging ribs meshing with the first engaging ribs are provided in the inner cavity of the sleeve assembly.

[0061] The shape of the first joining rib may be a right triangle or other shapes.

[0062] The number of the first joining ribs can be reasonably arranged according to actual conditions.

[0063] It can be seen from the above description that by setting a limiting relationship between the upper one-way rotating assembly consisting of the upper one-way bearing and the upper one-way limiting member and the sleeve assembly, the screw assembly and the sleeve assembly can be separated from the state of rotating together.

[0064] By providing a first engaging rib and providing a plurality of second engaging ribs that mesh with the first engaging ribs in the inner cavity of the sleeve assembly, the rotation can be guided in the direction in which rotation is allowed, thereby achieving complete meshing, so that the two can be easily put together and engaged, and can also be easily separated.

[0065] Furthermore, it also includes a fixing assembly, and the sleeve assembly is rotatably connected to the fixing assembly.

[0066] Furthermore, it also includes a lower limit assembly, which is used to resist the lower one-way rotation assembly, and the lower limit assembly is elastically connected to the fixing assembly.

[0067] Furthermore, it also includes an upper limit assembly, which is used to resist the upper unidirectional rotation assembly, and the upper limit assembly is elastically connected to the fixed assembly.

[0068] Specifically:

[0069] The upper limit assembly includes an upper limit cover with an opening at one end and a limit spring, the upper limit cover is sequentially sleeved on the outside of the fixed assembly and the sleeve assembly and abuts against the upper unidirectional rotation assembly, the other end of the screw assembly opposite to one end passes through the upper limit cover, and the opening edge of the upper limit cover is connected to the limit column;

[0070] The lower limit assembly includes a lower limit cover with an opening at one end, the lower limit cover is sleeved outside the sleeve assembly and abuts against the lower one-way rotation assembly, the outer wall of the lower limit cover is connected to a mounting block, and the mounting block is penetrated by a first limit hole;

[0071] A second limiting hole is formed through the fixing assembly, and one end of the limiting column passes through the second limiting hole, the first limiting hole and the limiting spring in sequence to be connected with the locking member.

[0072] The opening edge of the upper limit cover extends outward to form a water storage bottom, one end of the water storage bottom away from the upper limit cover is bent upward to form a flange, and a water guide pipe is connected to the water storage bottom.

[0073] From the above description, it can be seen that the limit spring can pull the upper limit cover and the upper one-way rotating assembly and the lower limit cover and the lower one-way rotating assembly closer to each other, so that the upper one-way rotating assembly and the sleeve assembly are reengaged and the lower one-way rotating assembly and the sleeve assembly are reengaged, so that the screw assembly can reciprocate again after rotating at the highest point or the lowest point.

[0074] Furthermore, a support ring is provided at the position where the sleeve assembly and the fixed assembly rotate relative to each other, and a plurality of mounting seats are provided on one side surface of the support ring along the circumference of the sleeve assembly, and a first receiving groove is formed by an inward groove on the side wall at one end away from the sleeve assembly, and a first ball is provided in the first receiving groove, and the first ball protrudes out of the notch of the first receiving groove.

[0075] From the above description, it can be seen that by setting the first ball, the friction between the sleeve assembly and the side wall of the inner cavity of the fixed assembly can be reduced when the sleeve assembly rotates, so that the screw assembly and the sleeve assembly can rotate together faster, thereby further improving the juice yield of citrus fruits, especially greatly improving the juicing effect of lemons with strong fibers.

[0076] Furthermore, a plurality of through holes are opened along the circumference of the sleeve assembly on the other side surface opposite to the one side surface of the support ring, and the mounting seat is recessed inwardly near one end of the support ring to form a second accommodating groove, and the through holes are arranged in one-to-one correspondence with the second accommodating groove, and a second ball is arranged in the second accommodating groove, and the second ball passes through the through hole and protrudes from the surface of the support ring.

[0077] From the above description, it can be seen that by providing a second ball, which cooperates with the first ball, the friction between the sleeve assembly and the side wall and the bottom of the inner cavity of the fixed assembly can be reduced when the sleeve assembly rotates, so that the screw assembly and the sleeve assembly can rotate together faster, thereby further improving the juice yield of citrus fruits, especially greatly improving the juicing effect of lemons with strong fibers.

[0078] The second technical solution adopted by the utility model is:

[0079] A juicer comprises a shell and the above-mentioned rotary reciprocating motion structure, wherein the rotary reciprocating motion structure is arranged in the inner cavity of the shell.

[0080] Please refer to Figures 1 to 16 As shown, the first embodiment of the utility model is:

[0081] Please refer to Figures 1 to 16 A rotary reciprocating motion structure comprises a sleeve assembly 1, a screw assembly 2, a fixing assembly 3, an upper limit assembly 4, a lower limit assembly 5, an upper unidirectional rotation assembly 6 and a lower unidirectional rotation assembly 7. The interior of the sleeve assembly 1 is hollow, one end of the screw assembly 2 is located in the inner cavity of the sleeve assembly 1, one end of the inner cavity of the sleeve assembly 1 is provided with an upper rotation stop position, and the other end of the inner cavity of the sleeve assembly 1 opposite to one end is provided with a lower rotation stop position, one end of the sleeve assembly 1 is sleeved on the outside of the upper unidirectional rotation assembly 6 and engaged with the upper unidirectional rotation assembly 6, and the other end of the sleeve assembly 1 opposite to one end is sleeved on the outside of the lower unidirectional rotation assembly 7 and engaged with the upper unidirectional rotation assembly 6. The upper and lower one-way rotating components 7 are engaged, the upper rotation stop position and the lower rotation stop position are both located between the upper one-way rotating component 6 and the lower one-way rotating component 7, the upper one-way rotating component 6 is sleeved outside the screw component 2, and the screw component 2 is rotationally connected to the upper one-way rotating component 6, the lower one-way rotating component 7 rotates unidirectionally along a first rotation direction (clockwise in this embodiment), and the upper one-way rotating component 6 rotates unidirectionally along a second rotation direction (counterclockwise in this embodiment), and the second rotation direction is the opposite direction of the first rotation direction, and the fixing component 3 is sleeved outside the sleeve component 1, and the sleeve component 1 is rotationally connected to the fixing component 3;

[0082] Please refer to Figures 1 to 16 , one end of the screw assembly 2 rotates and reciprocates in the inner cavity of the sleeve assembly 1 along the axial direction of the sleeve assembly 1, and the other end of the screw assembly 2 opposite to one end passes through the upper one-way rotating assembly 6 and the upper limit assembly 4 in sequence, and one end of the screw assembly 2 rotates along the first rotation direction, and as the screw assembly 2 gradually moves upward, the upper one-way rotating assembly 6 will be ejected, so that the upper one-way rotating assembly 6 is separated from the sleeve assembly 1, and when one end of the screw assembly 2 moves to the upper rotation stop position, one end of the screw assembly 2 is engaged with the sleeve assembly 1 and rotates together along the first rotation direction, and one end of the screw assembly 2 rotates along the second rotation direction, and as the screw assembly 2 gradually moves downward, the lower one-way rotating assembly 7 will be ejected, so that the lower one-way rotating assembly 7 is separated from the sleeve assembly 1, and when one end of the screw assembly 2 moves to the lower rotation stop position, one end of the screw assembly 2 is engaged with the sleeve assembly 1 and rotates together along the second rotation direction;

[0083] Please refer to Figures 1 to 16The upper limit assembly 4 is sequentially sleeved on the outside of the fixing assembly 3 and one end of the sleeve assembly 1 and the upper limit assembly 4 is abutted against the upper one-way rotation assembly 6. The upper limit assembly 4 is used to make the upper one-way rotation assembly 6 and the sleeve assembly 1 engage again. The lower limit assembly 5 is sleeved on the outside of the other end opposite to one end of the sleeve assembly 1 and the lower limit assembly 5 is abutted against the lower one-way rotation assembly 7. The lower limit assembly 5 is used to make the lower one-way rotation assembly 7 and the sleeve assembly 1 engage again.

[0084] Please refer to Figures 6 to 11 The sleeve assembly 1 includes a threaded tube 11 with a hollow interior and a fixed sleeve 12. Both opposite ends of the fixed sleeve 12 have openings. A partition 121 is provided between the side walls of the inner cavity of the fixed sleeve 12. The partition 121 is arranged at the upper rotation stop position. The partition 121 divides the inner cavity of the fixed sleeve 12 into an upper chamber and a lower chamber. One end of the threaded tube 11 extends into the lower chamber and is fixedly connected to the lower chamber. The upper one-way rotating assembly 6 is located in the upper chamber, and the upper one-way rotating assembly 6 is engaged with the inner side wall of the upper chamber.

[0085] Please refer to Figure 6 The position where the outer wall of the fixed sleeve 12 and the upper limit assembly 4 contact each other is recessed inward to form a first oil storage groove 122;

[0086] Please refer to Fig.14 , the screw assembly 2 includes a connecting rod 21 and a threaded seat 22, the connecting rod 21 is connected to the threaded seat 22, the threaded seat 22 is provided with an external thread, the inner cavity side wall of the threaded tube 11 is provided with an internal thread that cooperates with the threaded seat 22, and the threaded seat 22 is provided with an upper rotation stop rib 221 symmetrically arranged along the circumference of the connecting rod 21 on one end surface of the threaded seat 22 close to the upper rotation stop position, and the two upper rotation stop ribs 221 are inclined along the first rotation direction. The lower rotation stop rib 222 in the shape of a right triangle is provided on one end surface of the threaded seat 22 close to the lower rotation stop position, and the lower rotation stop rib 222 is inclined along the second rotation direction.

[0087] Please refer to Figure 6 , Figure 8 and Fig.10 The partition 121 is penetrated by a running groove 1211 which cooperates with the two upper rotation stop ribs 221. The length of the right-angled short side of the upper rotation stop rib 221 is greater than the thickness of the partition 121. The lower rotation stop position of the inner cavity of the threaded tube 11 is provided with a protrusion 111 which cooperates with the two lower rotation stop ribs 222.

[0088] Please refer to Figure 2 , Figure 4 and Fig.16The upper one-way rotating component 6 includes an upper one-way bearing 61 and an upper one-way limiter 62. One end of the sleeve component 1 is sleeved on the outside of the upper one-way limiter 62 and engaged with the upper one-way limiter 62. The upper one-way limiter 62 is sleeved on the outside of the upper one-way bearing 61 and there is an interference fit between the upper one-way limiter 62 and the upper one-way bearing 61. The upper one-way bearing 61 is sleeved on the outside of the screw component 2.

[0089] Please refer to Fig. 9 A plurality of first engaging ribs 63 in the shape of a right triangle are evenly spaced on the outer wall of the upper one-way limiter 62, and a plurality of second engaging ribs 13 in the shape of a right triangle are provided at one end of the inner cavity of the sleeve assembly 1 and mesh with the first engaging ribs 63.

[0090] Please refer to Figure 2 and Fig.16 The lower one-way rotating component 7 includes a lower one-way bearing 71 and a lower one-way limiter 72. The other end of the sleeve component 1 opposite to one end is sleeved on the outside of the lower one-way limiter 72 and engaged with the lower one-way limiter 72. The lower one-way limiter 72 is sleeved on the outside of the lower one-way bearing 71 and there is an interference fit between the lower one-way limiter 72 and the lower one-way bearing 71.

[0091] Please refer to Fig.10 A plurality of third engaging ribs are evenly spaced on the outer wall of the lower one-way limiting member 72, and a plurality of fourth engaging ribs 14 are meshed with the third engaging ribs and are disposed at the other end of the inner cavity of the sleeve assembly 1 opposite to one end.

[0092] Please refer to Figure 3 and Figure 4 The upper limit assembly 4 includes an upper limit cover 41 with an opening at one end and a limit spring 42. The upper limit cover 41 is sequentially sleeved on the outside of the fixing assembly 3 and one end of the sleeve assembly 1, and the upper limit cover 41 abuts against the upper unidirectional rotation assembly 6. The other end of the screw assembly 2 opposite to one end passes through the upper limit cover 41, and the opening edge of the upper limit cover 41 is connected to the limit column 43;

[0093] Please refer to Figure 5 and Fig.12 The lower limit assembly 5 includes a lower limit cover 51 with an opening at one end, the lower limit cover 51 is sleeved on the outside of the other end of the sleeve assembly 1 opposite to one end and the lower limit cover 51 is in contact with the lower one-way rotation assembly 7, and the outer wall of the lower limit cover 51 is connected to a mounting block 52, and a first limit hole 521 is formed through the mounting block 52;

[0094] Please refer to Figure 5A second limiting hole is formed through the fixing assembly 3, and one end of the limiting column 43 passes through the second limiting hole, the first limiting hole 521 and the limiting spring 42 in sequence to be connected with the locking member.

[0095] In this embodiment, the number of the limiting columns 43 is four, and similarly, the number of the first limiting holes 521 , the second limiting holes and the limiting springs 42 are all four.

[0096] Please refer to Figure 3 The opening edge of the upper limit cover 41 extends outward to form a water storage bottom 411. The end of the water storage bottom 411 away from the upper limit cover 41 is bent upward to form a flange 412. The water storage bottom 411 is connected to a water guide pipe 413. When the rotary reciprocating motion structure designed in this scheme is applied to a juicer, a drainage pipe is provided in the inner cavity of the juicer shell, and a water outlet is provided at the bottom of the inner cavity of the juicer shell. The water inlet end of the drainage pipe is connected to the water outlet end of the water guide pipe 413, and the water outlet end of the drainage pipe is connected to the water outlet. By providing the water guide pipe 413 and the flange 412, if the main engine sealing ring leaks, the main engine can be drained out through the water guide pipe 413 connected to the drainage pipe of the main engine.

[0097] Please refer to Figure 6 , Figure 7 , Fig.10 and Fig.11 A support ring 15 is sleeved on the position where the sleeve assembly 1 and the fixing assembly 3 rotate relative to each other, and mounting seats 16 are arranged at equal intervals on one side surface of the support ring 15 along the circumference of the sleeve assembly 1. The side wall of one end of each mounting seat 16 away from the sleeve assembly 1 is grooved inward to form a first receiving groove 161, and a first ball 1612 is arranged in the first receiving groove 161, and the first ball 1612 protrudes out of the notch of the first receiving groove 161.

[0098] Please refer to 10 and Fig.11 A through hole 17 is formed at equal intervals on the other side of the support ring 15 opposite to one side thereof along the circumference of the sleeve assembly 1. One end of the mounting seat 16 close to the support ring 15 is recessed inward to form a second accommodating groove 162. The through hole 17 and the second accommodating groove 162 are arranged in a one-to-one correspondence. A second ball 1622 is arranged in the second accommodating groove 162. The second ball 1622 passes through the through hole 17 and protrudes from the surface of the support ring 15.

[0099] The supporting surface of the fixing component 3 for supporting the sleeve component 1 can also be designed to be an inclined surface, and a plurality of third receiving grooves are arranged on the inclined surface, and a third ball is arranged in each third receiving groove, and the third ball protrudes out of the notch of the third receiving groove. Such a structure can provide upward and centripetal supporting force at the same time, so that only one circle of balls needs to be designed.

[0100] Please refer to 7 and Fig.10The groove wall of the first accommodating groove 161 is recessed inward to form a second oil storage groove 1611 , and the groove wall of the third accommodating groove is recessed inward to form a third oil storage groove 1621 .

[0101] In this embodiment, the number of the first rolling balls 1612 and the number of the second rolling balls 1622 are both six.

[0102] Please refer to Figure 1 , Figure 2 , Fig.13 , Fig.15 and Fig.16 The fixing assembly 3 includes an upper fixing assembly 31 and a lower fixing assembly, both of which are sleeved on the outside of the sleeve assembly 1, and both of which are rotatably connected to the sleeve assembly 1. The upper limit cover 41 is sleeved on the outside of the upper fixing assembly 31, and the inner cavity side wall of the upper limit cover 41 is provided with a limit strip 414, and the outer side wall of the upper fixing assembly 31 is provided with a limit groove 311 that cooperates with the limit strip 414.

[0103] Please refer to Figures 1 to 16 As shown, the second embodiment of the utility model is:

[0104] A juicer comprises a shell and the rotary reciprocating motion structure of embodiment 1, wherein the rotary reciprocating motion structure is arranged in an inner cavity of the shell.

[0105] In summary, the utility model provides a rotary reciprocating motion structure and a juicer, which are provided with a sleeve assembly, a screw assembly, a fixing assembly, an upper limit assembly, a lower limit assembly, an upper unidirectional rotating assembly and a lower unidirectional rotating assembly. One end of the screw assembly rotates along a first rotation direction, and as the screw assembly gradually moves upward, the upper unidirectional rotating assembly is ejected, so that the upper unidirectional rotating assembly is disengaged from the sleeve assembly. When one end of the screw assembly moves to the upper rotation stop position, one end of the screw assembly is engaged with the sleeve assembly and rotates together along the first rotation direction, and one end of the screw assembly rotates along the second rotation direction, and as the screw assembly gradually moves downward, the lower unidirectional rotating assembly is ejected, so that the lower unidirectional rotating assembly is disengaged from the sleeve assembly. When one end of the screw assembly moves to the lower rotation stop position, one end of the screw assembly is engaged with the sleeve assembly and rotates together along the second rotation direction. The lower limit assembly is sleeved on the outside of the other end of the sleeve assembly opposite to one end, and the lower limit assembly is abutted against the lower one-way rotating assembly. The lower limit assembly is used to make the lower one-way rotating assembly engage with the sleeve assembly again. After the lower one-way rotating assembly engages with the sleeve assembly again, one end of the screw assembly can rotate and move in the first rotation direction again, and this is repeated. Therefore, the screw assembly can rotate with the juicer head to the highest point and continue to rotate at the highest point, and can also descend to the lowest point and continue to rotate at the lowest point. Since it can rotate continuously at the highest and lowest points, it can improve the juice yield of citrus fruits, especially the juicing effect of lemons with strong fibers. The present invention adopts a purely mechanical structure to replace the method of using upper and lower limit switches to control the travel of the transmission parts in the prior art, so that the reliability of the whole machine can be greatly improved.

[0106] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A rotary reciprocating motion structure, characterized in that: It includes a sleeve assembly, a screw assembly, an upper one-way rotating assembly and a lower one-way rotating assembly. The screw assembly can rotate and reciprocate relative to the sleeve assembly. An upper rotation stop is provided at one end of the sleeve assembly, and a lower rotation stop is provided at the other end of the sleeve assembly. When the screw assembly moves to the upper rotation stop, it is connected to the sleeve assembly and engaged to the lower one-way rotating assembly to rotate together. When the screw assembly moves to the lower rotation stop, it is connected to the sleeve assembly and engaged to the upper one-way rotating assembly to rotate together.

2. The rotary reciprocating motion structure according to claim 1, characterized in that: The lower one-way rotating assembly includes a lower one-way bearing, and the rotation direction of the lower one-way bearing is the same as the rotation direction of the screw assembly when it rotates upward to the stop position.

3. The rotary reciprocating motion structure according to claim 2, characterized in that: The lower one-way rotation assembly further includes a lower one-way stopper, and the lower one-way stopper is used to engage with the sleeve assembly.

4. The rotary reciprocating motion structure according to claim 1, characterized in that: The sleeve assembly includes a threaded tube, and the screw assembly can rotate and reciprocate relative to the threaded tube.

5. The rotary reciprocating motion structure according to claim 4, characterized in that: The screw rod assembly comprises a connecting rod and a threaded seat, wherein the connecting rod is connected to the threaded seat, the threaded seat is provided with an external thread, and the inner cavity side wall of the threaded tube is provided with an internal thread that cooperates with the external thread.

6. The rotary reciprocating motion structure according to claim 5, characterized in that: An upper rotation stop rib is provided on an end surface of the threaded seat close to the upper rotation stop position, and the upper rotation stop rib is used to connect the sleeve assembly.

7. The rotary reciprocating motion structure according to claim 1, characterized in that: The upper one-way rotating assembly includes an upper one-way bearing, and the rotation direction of the upper one-way bearing is the same as the rotation direction of the screw assembly when it rotates downward to the stop position.

8. The rotary reciprocating motion structure according to claim 7, characterized in that: The upper one-way rotation assembly further comprises an upper one-way stopper, and the upper one-way stopper is used to engage with the sleeve assembly.

9. The rotary reciprocating motion structure according to claim 1, characterized in that: It also includes a fixing assembly, and the sleeve assembly is rotatably connected to the fixing assembly.

10. The rotary reciprocating motion structure according to claim 9, characterized in that: It also includes a lower limit assembly, which is used to resist the lower one-way rotation assembly and is elastically connected to the fixing assembly.

11. The rotary reciprocating motion structure according to claim 9, characterized in that: It also includes an upper limit assembly, which is used to resist the upper unidirectional rotation assembly, and the upper limit assembly is elastically connected to the fixed assembly.

12. The rotary reciprocating motion structure according to claim 9, characterized in that: A support ring is provided at the position where the sleeve assembly and the fixed assembly rotate relative to each other, and a plurality of mounting seats are provided on one side surface of the support ring along the circumference of the sleeve assembly. A side wall at one end of each mounting seat away from the sleeve assembly is grooved inward to form a first receiving groove, and a first ball is provided in the first receiving groove, and the first ball protrudes out of the notch of the first receiving groove.

13. The rotary reciprocating motion structure according to claim 12, characterized in that: A plurality of through holes are formed on the other side opposite to one side of the support ring along the circumference of the sleeve assembly, and one end of the mounting seat close to the support ring is recessed inward to form a second accommodating groove, and the through holes are arranged in one-to-one correspondence with the second accommodating groove, and a second ball is arranged in the second accommodating groove, and the second ball passes through the through hole and protrudes from the surface of the support ring.

14. A juice extractor, characterized in that: The invention comprises a shell and a rotary reciprocating motion structure according to any one of claims 1 to 13, wherein the rotary reciprocating motion structure is arranged in an inner cavity of the shell.

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