Screw rotating structure and juicer

By designing a polygonal groove and inclined rib contact method in the screw body, the tearing problem of the screw rotating structure under large load is solved, surface contact and grease storage are achieved, and the durability and stability of the screw rotating structure are improved.

CN223392264UActive Publication Date: 2025-09-30FUJIAN MEIZHIKOU TECH CO LTD
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Patent Information

Application Number
CN202422648480.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-09-30
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

Existing screw rotating structures are easily broken under heavy loads, especially due to the point contact between the output shaft and the screw body and the weakness of the plastic material.

Method used

The screw body is designed to be recessed to form a polygonal chute. The output shaft has the same cross-sectional shape as the chute, and ribs are provided on the side walls of the chute. The contact surface between the ribs and the output shaft is an inclined surface to achieve surface-to-surface contact. The inner angle of the chute is an arc angle, and an oil storage tank is provided to store grease.

Benefits of technology

The surface-to-surface contact and oil storage tank design prevents the screw body from cracking under heavy loads, thereby improving the durability and stability of the screw rotation structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of screw rotation, in particular to a screw rotation structure and a juicer, which comprise a screw body and an output shaft, one end face of the screw body sinks inwards to form a sliding groove for the output shaft to rotate and move, the section of the sliding groove is polygonal, and the section of the output shaft is the same as the section of the sliding groove in shape. Two ribs are arranged on each side wall of the sliding groove, the contact faces of the ribs and the output shaft are inclined faces so that face-to-face contact can be formed between the output shaft and the ribs when the output shaft rotates, it can be guaranteed that the output shaft can be attached to the inclined faces of the ribs when the output shaft drives the screw body to rotate, the contact between the output shaft and the screw body is face contact, and the screw body can be prevented from being damaged. In this way, the screw body can be prevented from being cracked under the large load.
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Description

Technical Field

[0001] The utility model relates to the technical field of screw rotation, in particular to a screw rotation structure and a juicer. Background Art

[0002] In existing screw rotation structures, the inner hole on the screw body for the output shaft to rotate and move is generally designed as a square hole. Due to the mold molding process and assembly clearance requirements, the square hole is designed using a square hole plus clearance plus draft method. However, the contact between the output shaft and the square hole of this transmission is point contact, and the screw body is generally a plastic part, which can easily cause significant damage to the plastic screw body. At the same time, the initial square hole where the output shaft and the screw body fit is large, while the output shaft is small. The inner hole of the plastic screw body is very likely to be cracked under heavy load. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a screw rotating structure and a juicer, which can prevent the screw body from being broken when under heavy load.

[0004] In order to solve the above technical problems, the first technical solution adopted by the present invention is:

[0005] A screw rotation structure includes a screw body and an output shaft. One end surface of the screw body is recessed inward to form a slide groove for the output shaft to rotate and move. The cross-sectional shape of the slide groove is polygonal. The cross-sectional shape of the output shaft is the same as that of the slide groove. Two ribs are provided on each side wall of the slide groove. The contact surface between the rib and the output shaft is an inclined surface so that surface-to-surface contact is formed between the output shaft and the rib when the output shaft rotates.

[0006] Furthermore, the inner angle of the chute is an arc angle.

[0007] Furthermore, a distance is provided between two ribs on the same side wall of the slide, and an oil storage tank is formed between the two ribs and the side wall.

[0008] Furthermore, the angle formed by the inclined surfaces of two mutually adjacent ribs on two adjacent side walls of the sliding groove is greater than the inner angle of the output shaft.

[0009] Furthermore, the cross-sectional shape of the rib is triangular.

[0010] Furthermore, the diameter of the chute gradually decreases from one end surface to the other end surface of the screw body.

[0011] Furthermore, the cross-sectional shape of the output shaft and the cross-sectional shape of the slide groove are both regular quadrilaterals.

[0012] The second technical solution adopted by the utility model is:

[0013] A juicer comprises a shell and the above-mentioned screw rotating structure, wherein the screw rotating structure is arranged in the inner cavity of the shell.

[0014] Furthermore, a sleeve part is also provided in the shell, and the screw body includes a connecting rod and a threaded seat. The connecting rod is connected to the threaded seat, and the threaded seat is provided with an external thread. The side wall of the inner cavity of the sleeve part is provided with an internal thread that cooperates with the external thread. An upper rotation stop is provided on one end face of the threaded seat along the circumference of the connecting rod, and the upper rotation stop is used to connect the upper rotation stop position of the sleeve part.

[0015] Furthermore, a lower rotation stopper is provided on the other end surface opposite to one end surface of the threaded seat along the circumference of the connecting rod, and the lower rotation stopper is used to connect to the lower rotation stop position of the sleeve member.

[0016] The beneficial effects of the present invention are:

[0017] This solution forms a sliding groove for the output shaft to rotate and move by inwardly recessing one end surface of the screw body. The cross-sectional shape of the sliding groove is polygonal, and the cross-sectional shape of the output shaft is the same as that of the sliding groove. Two ribs are provided on each side wall of the sliding groove. The contact surface between the ribs and the output shaft is an inclined surface so that surface-to-surface contact is formed between the output shaft and the ribs when the output shaft rotates. This can ensure that the output shaft can simultaneously fit the inclined surface of the ribs when driving the screw body to rotate, so that the contact between the output shaft and the screw body is surface contact, which can prevent the screw body from being cracked under heavy load. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the top view of the screw rotating structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the top view of the screw rotating structure of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the screw body and output shaft of the screw rotating structure of the present invention;

[0021] Figure 4 This is a structural diagram of the screw body of the screw rotating structure of the utility model;

[0022] Description of labels:

[0023] 1. Screw body; 11. Slide groove; 111. Arc angle; 112. Oil storage tank; 12. Rib; 13. Connecting rod; 14. Threaded seat; 141. Upper rotation stop; 142. Lower rotation stop;

[0024] 2. Output shaft. DETAILED DESCRIPTION

[0025] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0026] Please refer to Figure 1 , the first technical solution adopted by the utility model is:

[0027] A screw rotation structure includes a screw body and an output shaft. One end surface of the screw body is recessed inward to form a slide groove for the output shaft to rotate and move. The cross-sectional shape of the slide groove is polygonal. The cross-sectional shape of the output shaft is the same as that of the slide groove. Two ribs are provided on each side wall of the slide groove. The contact surface between the rib and the output shaft is an inclined surface so that surface-to-surface contact is formed between the output shaft and the rib when the output shaft rotates.

[0028] From the above description, it can be seen that the beneficial effects of the present invention are:

[0029] This solution forms a sliding groove for the output shaft to rotate and move by inwardly recessing one end surface of the screw body. The cross-sectional shape of the sliding groove is polygonal, and the cross-sectional shape of the output shaft is the same as that of the sliding groove. Two ribs are provided on each side wall of the sliding groove. The contact surface between the ribs and the output shaft is an inclined surface so that surface-to-surface contact is formed between the output shaft and the ribs when the output shaft rotates. This can ensure that the output shaft can simultaneously fit the inclined surface of the ribs when driving the screw body to rotate, so that the contact between the output shaft and the screw body is surface contact, which can prevent the screw body from being cracked under heavy load.

[0030] Furthermore, the inner angle of the chute is an arc angle.

[0031] From the above description, it can be seen that if the inner corner of the chute is not rounded, stress concentration is very likely to occur at the right angle position, so the inner corner position of the chute will become the weakest cracking point. Therefore, designing the inner corner of the chute as an arc angle can further prevent the screw body from being cracked under heavy load.

[0032] Furthermore, a distance is provided between two ribs on the same side wall of the slide, and an oil storage tank is formed between the two ribs and the side wall.

[0033] From the above description, it can be seen that, under the premise of ensuring that the contact between the output shaft and the screw body is surface contact, an oil storage groove can be formed between the ribs and the side walls for storing grease, so that the grease will not be pushed away during the rotation of the output shaft, and the lubrication between the output shaft and the slide groove is always maintained, which can further prevent the screw body from being cracked under heavy load.

[0034] Furthermore, the angle formed by the inclined surfaces of two mutually adjacent ribs on two adjacent side walls of the sliding groove is greater than the inner angle of the output shaft.

[0035] Furthermore, the cross-sectional shape of the rib is triangular.

[0036] Furthermore, the diameter of the chute gradually decreases from one end surface to the other end surface of the screw body.

[0037] Furthermore, the cross-sectional shape of the output shaft and the cross-sectional shape of the slide groove are both regular quadrilaterals.

[0038] Please refer to Figures 1 to 4 , the second technical solution adopted by the utility model is:

[0039] A juicer comprises a shell and the above-mentioned screw rotating structure, wherein the screw rotating structure is arranged in the inner cavity of the shell.

[0040] Furthermore, a sleeve part is also provided in the shell, and the screw body includes a connecting rod and a threaded seat. The connecting rod is connected to the threaded seat, and the threaded seat is provided with an external thread. The side wall of the inner cavity of the sleeve part is provided with an internal thread that cooperates with the external thread. An upper rotation stop is provided on one end face of the threaded seat along the circumference of the connecting rod, and the upper rotation stop is used to connect the upper rotation stop position of the sleeve part.

[0041] Furthermore, a lower rotation stopper is provided on the other end surface opposite to one end surface of the threaded seat along the circumference of the connecting rod, and the lower rotation stopper is used to connect to the lower rotation stop position of the sleeve member.

[0042] Please refer to Figures 1 to 3 As shown, the first embodiment of the present utility model is:

[0043] Please refer to Figures 1 to 3 , a screw rotation structure, characterized in that it includes a screw body 1 and an output shaft 2, the screw body 1 is made of plastic, the output shaft 2 is made of stainless steel, one end surface of the screw body 1 is recessed inward to form a slide groove 11 for the output shaft 2 to rotate and move, the cross-sectional shape of the slide groove 11 is polygonal, the cross-sectional shape of the output shaft 2 is the same as the cross-sectional shape of the slide groove 11, and two ribs 12 are provided on each side wall of the slide groove 11, and the contact surface between the rib 12 and the output shaft 2 is an inclined surface so that surface-to-surface contact is formed between the output shaft 2 and the rib 12 when the output shaft 2 rotates.

[0044] Please refer to Figure 1 and Figure 2 The inner angle of the slide groove 11 is an arc angle 111.

[0045] Please refer to Figure 1 and Figure 2A distance is provided between the two ribs 12 on the same side wall of the slide 11, and an oil storage tank 112 is formed between the two ribs 12 and the side wall.

[0046] Please refer to Figure 2 The angle formed by the inclined surfaces of the two ribs 12 close to each other on the two adjacent side walls of the chute 11 ( Figure 2 is greater than the internal angle of the output shaft 2.

[0047] The cross-sectional shape of the rib 12 is a right triangle, and the cross-sectional shape of the rib 12 may also be a right trapezoid.

[0048] The diameter of the chute 11 gradually decreases from one end surface to the other end surface of the screw body 1 .

[0049] Please refer to Figure 1 The cross-sectional shape of the output shaft 2 and the cross-sectional shape of the slide groove 11 are both regular quadrilaterals. The cross-sectional shape of the output shaft 2 and the cross-sectional shape of the slide groove 11 can also be a regular triangle, a regular pentagon, a regular hexagon, etc.; the output shaft 2 can also be a shaft with a flat position, a shaft with a key / pin, or a spline shaft, etc.

[0050] Please refer to Figure 1 In this embodiment, the cross-sectional shapes of the output shaft 2 and the chute 11 are both regular quadrilaterals.

[0051] If the cross-sectional shapes of the output shaft 2 and the chute 11 are both regular quadrilaterals, the total number of ribs 12 in the chute 11 is eight, and the chute 11 has four arc corners 111; when the output shaft 2 rotates forward, the four surfaces of the output shaft 2 abut against four of the eight ribs 12, and when the output shaft 2 rotates reversely, the output shaft 2 abuts against the other four of the eight ribs 12, thereby achieving surface-to-surface contact between the output shaft 2 and the chute 11.

[0052] Please refer to Figures 1 to 4 As shown, the second embodiment of the present utility model is:

[0053] Please refer to Figures 1 to 3 A juicer includes a shell and a screw rotating structure, wherein the screw rotating structure is arranged in an inner cavity of the shell.

[0054] Please refer to Figure 4A sleeve member is also provided in the shell, and the screw body 1 includes a connecting rod 13 and a threaded seat 14. The connecting rod 13 is connected to the threaded seat 14. The threaded seat 14 is provided with an external thread, and the side wall of the inner cavity of the sleeve member is provided with an internal thread that cooperates with the external thread. An upper rotation stop member 141 (a triangular rib can be used) is provided on one end surface of the threaded seat 14 along the circumference of the connecting rod 13. The upper rotation stop member 141 is used to connect the upper rotation stop position of the sleeve member, so as to realize that the screw body 1 only rotates but does not rise or fall.

[0055] A lower rotation stopper 142 (which can be a triangular rib) is provided on the other end face of the threaded seat 14 along the circumference of the connecting rod 13. The lower rotation stopper 142 is used to connect the lower rotation stop position of the sleeve member to achieve the screw body 1 rotating without lifting.

[0056] To sum up, the utility model provides a screw rotation structure and a juicer, which form a slide groove for the output shaft to rotate and move by forming an inward depression on one end surface of the screw body. The cross-sectional shape of the slide groove is polygonal, and the cross-sectional shape of the output shaft is the same as the cross-sectional shape of the slide groove. Two ribs are provided on each side wall of the slide groove, and the contact surface between the rib and the output shaft is an inclined surface so that surface-to-surface contact is formed between the output shaft and the rib when the output shaft rotates. This can ensure that the output shaft can simultaneously fit the inclined surface of the rib when driving the screw body to rotate, so that the contact between the output shaft and the screw body is surface contact, thereby preventing the screw body from being cracked under a large load.

[0057] The above description is merely 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 description 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 screw rotating structure, characterized in that: It includes a screw body and an output shaft. One end surface of the screw body is recessed inward to form a slide groove for the output shaft to rotate and move. The cross-sectional shape of the slide groove is polygonal. The cross-sectional shape of the output shaft is the same as that of the slide groove. Two ribs are provided on each side wall of the slide groove. The contact surface between the rib and the output shaft is an inclined surface so that surface-to-surface contact is formed between the output shaft and the rib when the output shaft rotates.

2. The screw rotating structure according to claim 1, characterized in that: The inner angle of the chute is an arc angle.

3. The screw rotating structure according to claim 1, characterized in that: A distance is provided between two ribs on the same side wall of the slide, and an oil storage tank is formed between the two ribs and the side wall.

4. The screw rotating structure according to claim 1, characterized in that: The angle formed by the inclined surfaces of the two mutually adjacent ribs on the two adjacent side walls of the sliding groove is greater than the inner angle of the output shaft.

5. The screw rotating structure according to claim 1, characterized in that: The cross-section of the rib is triangular.

6. The screw rotating structure according to claim 1, characterized in that: The diameter of the chute gradually decreases from one end surface to the other end surface of the screw body.

7. The screw rotating structure according to claim 1, characterized in that: The cross-sectional shape of the output shaft and the cross-sectional shape of the sliding groove are both regular quadrilaterals.

8. A juicer, characterized in that: The invention comprises a shell and the screw rotating structure according to any one of claims 1 to 7, wherein the screw rotating structure is arranged in the inner cavity of the shell.

9. The juicer according to claim 8, characterized in that A sleeve part is also provided in the shell, and the screw body includes a connecting rod and a threaded seat. The connecting rod is connected to the threaded seat, and the threaded seat is provided with an external thread. The side wall of the inner cavity of the sleeve part is provided with an internal thread that cooperates with the external thread. An upper rotation stop is provided on one end surface of the threaded seat along the circumference of the connecting rod, and the upper rotation stop is used to connect the upper rotation stop position of the sleeve part.

10. The juicer according to claim 9, characterized in that A lower rotation stopper is provided on the other end surface opposite to one end surface of the threaded seat along the circumference of the connecting rod, and the lower rotation stopper is used to connect to the lower rotation stop position of the sleeve member.