CN117426661A - Transmission screw and juicer - Google Patents
Transmission screw and juicer Download PDFInfo
- Publication number
- CN117426661A CN117426661A CN202210835900.2A CN202210835900A CN117426661A CN 117426661 A CN117426661 A CN 117426661A CN 202210835900 A CN202210835900 A CN 202210835900A CN 117426661 A CN117426661 A CN 117426661A
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- China
- Prior art keywords
- drive screw
- thread
- spring wire
- thread groove
- metal spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 54
- 239000002184 metal Substances 0.000 claims abstract description 73
- 239000004033 plastic Substances 0.000 claims abstract description 39
- 229920003023 plastic Polymers 0.000 claims abstract description 39
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 74
- 235000013399 edible fruits Nutrition 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 235000005979 Citrus limon Nutrition 0.000 description 3
- 244000248349 Citrus limon Species 0.000 description 2
- 241000675108 Citrus tangerina Species 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J19/00—Household machines for straining foodstuffs; Household implements for mashing or straining foodstuffs
- A47J19/02—Citrus fruit squeezers; Other fruit juice extracting devices
- A47J19/025—Citrus fruit squeezers; Other fruit juice extracting devices including a pressing screw
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention relates to a drive screw, which is characterized in that: comprising a plastic rod having an externally threaded section; the spiral metal spring wire is clamped in the thread groove of the external thread section in a screwing way; the width of the thread groove is matched with the width of the metal spring wire, and the depth of the thread groove is smaller than the thickness of the metal spring wire, so that the metal spring wire screwed and clamped in the thread groove is exposed out of the thread groove to form a transmission thread. The transmission thread formed by the metal spring wire is made of metal, so that the strength and the wear resistance of the transmission thread are improved, the transmission thread is not easy to wear after long-time use, the transmission thread is not easy to slide in the transmission process, and the transmission stability of the transmission screw is ensured. The invention also relates to a juicer with the driving screw.
Description
Technical Field
The invention relates to a drive screw for mechanical transmission and a juice extractor with a drive screw.
Background
Screw rods are commonly used in various mechanical transmission systems, and are also used in juicers, the juice extracting machine is driven by a rotating built-in screw rod to move and be matched with another juice extracting head to roll and finish juice extracting, for example, a juicer disclosed in Chinese patent application No. CN201710466647.7 (publication No. CN 107149380A) comprises a shell, a juice cup, a cup cover, an upper juice extracting head, a lower juice extracting head, a screw rod and a motor, wherein the upper juice extracting head is arranged in the cup cover, the top end of the screw rod extends into the juice cup, the lower juice extracting head is arranged at the top end of the screw rod, the juice cup is arranged on the shell, the motor is arranged in the shell and moves up and down in the shell, a sleeve is arranged at the periphery of the screw rod, a nut is movably arranged in the sleeve, but the nut cannot rotate with the sleeve, the screw rod is matched with the nut in a threaded manner, an upper spring is arranged above the nut, a lower spring is arranged below the nut, and both the upper spring and the lower spring are arranged in the sleeve, and the upper spring and the lower spring are propped against the nut.
Also, as disclosed in chinese patent application CN201910836379.2 (publication No. CN110393424 a), such a juicer is disclosed, and includes a casing, a rotating handle, a juice extracting cover, a juice extracting rod and a juice receiving box, wherein the upper end of the casing is provided with a feed hopper, a juice extracting cylinder communicated with the feed hopper is disposed inside the casing, the outer side of the casing is provided with a juice extracting cover communicated with the juice extracting cylinder, a pressure head matched with the juice extracting cover is disposed in the juice extracting cylinder, one end of the pressure head is connected with the juice extracting rod, one side of the juice extracting cylinder far away from the juice extracting cover is provided with a driven gear, the driven gear is in threaded fit with the juice extracting rod (the juice extracting rod is a threaded rod), the outer side of the casing is provided with a rotating handle, one end of the rotating shaft is connected with the rotating handle, the other end of the rotating shaft is in rotary connection with a side wall of the casing, a driving gear matched with the driven gear is disposed in the casing, the upper end of the juice receiving box is communicated with the juice extracting cover through the juice receiving pipe, and the lower end of the juice receiving box is provided with a juice extracting pipe.
The screw rod can be divided into two types according to the material, one is a metal screw rod made of metal material, and has the advantages of high strength and good wear resistance, and the defects of heavy weight and high cost are overcome. The other plastic screw is formed by plastic molding, and has the advantages of low cost and light weight, and the defects of low strength and poor wear resistance.
For this purpose, the existing screw can be further improved.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a drive screw which is reasonable in structure, good in wear resistance of the threaded portion of the screw, light in overall weight and low in cost, aiming at the state of the art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a drive screw, characterized in that: comprising a plastic rod having an externally threaded section; the spiral metal spring wire is clamped in the thread groove of the external thread section in a screwing way; the width of the thread groove is matched with the width of the metal spring wire, and the depth of the thread groove is smaller than the thickness of the metal spring wire, so that the metal spring wire screwed and clamped in the thread groove is exposed out of the thread groove to form a transmission thread.
The plastic rod is characterized by further improving the plastic rod, and further comprising a limiting joint which is connected to the end part of the plastic rod and limits and constrains the metal spring wire; the reverse rotation separation of the metal spring wire from the thread groove of the plastic rod is avoided, and particularly, the limit joint is provided with a blocking part blocking the position of the inlet end of the thread groove, so that the reverse rotation separation of the metal spring wire from the thread groove of the plastic rod can be effectively avoided, and the whole structure design is reasonable. Of course, other means of restraining the wire may be used, such as locating a stop pin at the exit of the thread groove.
For the convenience spacing joint is connected with the plastic rod, above-mentioned plastic rod still has the linkage segment, and the linkage segment is located the outer end of external screw thread section, spacing joint is fixed on the linkage segment. The limit joint can be fixed on the connecting section in a threaded connection mode, or fixed on the connecting section in a bolt mode, or fixed on the connecting section in an adhesive and welding mode.
As an improvement, the inner end of the limit joint is provided with a jack, and the connecting section is inserted into and fixed in the jack. The connecting section is inserted into the jack at the inner end of the limit joint and fixed, the contact area between the limit joint and the connecting section is increased, and the limit joint is more firmly connected with the connecting section.
In order to firmly connect the limiting joint and the connecting section, the limiting joint is preferably fixed on the connecting section in an injection molding mode. Therefore, the limiting joint and the connecting section are integrally formed together, and the limiting joint is firmly fixed on the connecting section, so that the limiting joint and the connecting section are not easy to separate relatively under the action of larger external force.
Still further improve, the shaping has the locating hole on the above-mentioned linkage segment perisporium, limit joint is moulded plastics and is fixed under the state on the linkage segment, limit joint's hole wall shaping goes out and inserts the spliced pole in the locating hole. The formed plug post is inserted into the positioning hole of the connecting section between the formed limit joint and the connecting section, so that the limit joint and the connecting section are tightly combined together, and are not easy to separate even under the action of large torsion.
Still further improved, a metal mandrel is arranged in the plastic rod. Because the plastic rod as the main body is made of plastic, the strength is not very high, the structure can strengthen the integral strength of the transmission screw through the arrangement of the metal mandrel, and the transmission screw cannot be broken under the torsion effect.
Preferably, the metal mandrel is injection molded as an insert with the plastic rod. The structure is convenient to fix with the plastic rod, and meanwhile, the metal core shaft and the plastic rod are firmly combined.
Preferably, a metal mandrel is arranged in the plastic rod, the metal mandrel is arranged to strengthen the integral strength of the transmission screw, the cross section of the metal mandrel is polygonal, and the metal mandrel is simultaneously inserted into and fixed in the jack of the limit joint at the end part of the plastic rod. The structure ensures that the metal mandrel and the plastic rod are not easy to rotate relatively under the action of torsion.
Preferably, the cross section of the metal spring wire is rectangular, and the cross section of the thread groove is U-shaped. The structure can enable the metal spring wire to be in plane contact with the thread groove, enable the metal spring wire to be stably positioned in the thread groove, enable the cross section of the transmission thread to be U-shaped, and enable the transmission effect to be better.
Compared with the prior art, the driving screw has the advantages that: the main body of the transmission screw is a plastic rod, and compared with a metal screw, the transmission screw has the advantages of light weight, convenience in processing and low cost; in order to make up the defect of low strength of the transmission thread of the plastic screw, the transmission screw is also provided with a metal spring wire which is screwed and clamped in a thread groove of the external thread section, and the depth of the thread groove is smaller than the thickness of the metal spring wire, so that the outer surface of the metal spring wire which is screwed and clamped in the thread groove is exposed out of the thread groove to form the transmission thread; the groove width of the thread groove is matched with the width of the metal spring wire, so that the metal spring wire is prevented from shaking relative to the thread groove, and the transmission thread is more stable.
Axial limiting constraint is carried out on the metal spring by combining with a limiting joint connected to the end part of the plastic rod
The second technical problem to be solved by the invention is to provide a juicer which has reasonable structure, long service life, good wear resistance and labor-saving operation and is particularly suitable for juicing fruits such as oranges, tangerines, lemons and the like.
The invention solves the second technical problem by adopting the technical proposal that: a juicer includes a housing; the top of the juice extracting head is transversely provided with a plug rod for mounting fruits; the juice squeezing cover is connected to the shell and provided with an arc-shaped concave squeezing cavity, and the juice squeezing head can be accommodated in the squeezing cavity; the method is characterized in that: the juicer also comprises the driving screw, the driving screw is arranged in the shell, can rotate around the axis of the driving screw and can move back and forth, the rear end of the driving screw is connected with the rocking handle, and the juicer head is connected with the front end of the driving screw and can rotate and move back and forth along with the front end of the driving screw.
Under the normal use state of the juicer, the inserted link and the driving screw are transversely arranged or horizontally arranged, and the forward and backward movement is the movement in the transverse direction.
Compared with the prior art, the juicer has the advantages that: the power of the juicer is hand, so that the cost is lower compared with that of an electric juicer; the arrangement of the inserted link can better mount fruits on the juice extracting head, when in juice extracting, the rocking handle drives the transmission screw to drive, under the action of screw thread, the transmission screw moves forward while rotating, the juice extracting head is driven to move gradually close to the juice extracting cover while rotating, the juice extracting process is rotary extrusion, juice extracting is more complete, and the juice yield is high; the transmission thread formed by the metal spring wire is made of metal, so that the strength and wear resistance of the transmission thread are improved, the transmission thread is not easy to wear after long-time use, the wire is not easy to slide in the transmission process, and the transmission stability of the transmission screw is ensured; a labor-saving lever is formed between the rocking handle and the transmission screw, so that the juicing operation is labor-saving; when in juice extraction, orange and lemon are cut in half, then the pulp end is mounted on the inserted link, the peel faces outwards (towards the juice extraction cover), the fixation of the fruit is completed, the fruit is not required to be taken out, and the juice extraction operation is more convenient.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a drive screw;
FIG. 2 is a cross-sectional view of an embodiment of a drive screw;
FIG. 3 is an exploded perspective view of an embodiment of a drive screw;
FIG. 4 is a second perspective exploded view of an embodiment of a drive screw;
FIG. 5 is a schematic perspective view of an embodiment of the juice extractor (juice extractor lid open position);
FIG. 6 is a schematic perspective view of an embodiment of the juice extractor (juice extractor lid closed);
fig. 7 is a perspective view of a transmission part of an embodiment of the juice extractor.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1-4, is a preferred embodiment of the drive screw.
A drive screw, comprising
A plastic rod 1 having an external thread section 11;
the spiral metal spring wire 2 is clamped in the thread groove 111 of the external thread section 11 in a screwing mode, the groove width D of the thread groove 111 is matched with the width D of the metal spring wire 2, and the groove width D of the thread groove 111 is slightly larger than the width D of the spring wire 2, so that the metal spring wire 2 can be clamped in the thread groove 111 in a tight fit mode to be optimal; the depth H of the thread groove 111 is smaller than the thickness H of the metal spring wire 2, so that the outer surface of the metal spring wire 2 screwed and clamped in the thread groove 111 is exposed out of the thread groove 111 to form a transmission thread S;
the limiting joint 3, the cross section of the limiting joint 3 is flat, and is conveniently connected with the juicing head 6, the limiting joint 3 is connected at the end part of the plastic rod 1 and limits and constrains the metal spring wire 2, specifically, the limiting joint 3 is provided with a blocking part 32 blocking the position of the inlet end 112 of the thread groove 111, namely, the inlet end 112 of the outermost end of the thread groove 111 is blocked, and preferably, the blocking part 32 is also in contact with the outer end surface of the metal spring wire 2, so that the metal spring wire 2 can be effectively prevented from reversely rotating and running out from the inlet end 112 of the outermost end of the thread groove 111.
The plastic rod 1 is also provided with a connecting section 12, the connecting section 12 is positioned at the outer end of the external thread section 11, and the limit joint 3 is fixed on the connecting section 12. The inner end of the limit joint 3 is provided with a jack 31, and the connecting section 12 is inserted into and fixed in the jack 31. The limit joint 3 is fixed on the connecting section 12 in a two-shot injection molding mode. The connecting section 12 is formed with a positioning hole 121 on the peripheral wall, and the inner hole wall of the limiting joint 3 is formed with a plug 311 inserted into the positioning hole 121 in a state that the limiting joint 3 is secondarily injection-molded on the connecting section 12.
A metal mandrel 4 is arranged in the plastic rod 1, and the metal mandrel 4 is simultaneously inserted into and fixed in the insertion hole 31 of the limit joint 3. The metal core shaft 4 is used as an insert to be injection molded with the plastic rod 1, namely, the metal core shaft 4 is used as an insert to be placed in a mold, and after injection molding, the plastic rod 1 is directly molded on the periphery of the metal core shaft 4. The cross section of the metal mandrel 4 is polygonal.
The metal spring wire 2 is a rectangular spring, that is, the cross section of the metal wire of the metal spring wire 2 is rectangular, and the groove shape of the thread groove 111 is U-shaped.
The main body of the transmission screw is a plastic rod 1, and compared with a metal screw, the transmission screw has the advantages of light weight, convenience in processing and low cost; in order to make up the defect of low transmission thread strength of the plastic screw, the transmission screw is also provided with a metal spring wire 2 which is screwed and clamped in a thread groove 111 of the external thread section 11, and the depth H of the thread groove 111 is smaller than the thickness H of the metal spring wire 2, so that the metal spring wire 2 screwed and clamped in the thread groove 111 can be exposed out of the thread groove 111 to form a transmission thread S, the transmission thread S is made of metal, the strength and the wear resistance of the transmission thread S are improved, the transmission thread S is not easy to wear after long-time use, the wire is not easy to slide in the transmission process, and the transmission stability of the transmission screw is ensured; and the metal spring wire 2 is axially limited and restrained by the end limiting joint 3 connected to the plastic rod 1, the groove width D of the thread groove 111 is matched with the width D of the metal spring wire 2, the metal spring wire 2 is prevented from being separated from the thread groove 111 of the plastic rod 1, and the whole structure is reasonable in design.
As shown in fig. 5 to 7, is a preferred embodiment of the juice extractor.
A juice extractor includes
A housing 5;
the juice extractor head 6, the top of the juice extractor head 6 is transversely provided with a plug rod 61 for mounting fruits;
a juice extracting cover 7 connected to the casing 5, wherein the juice extracting cover 7 has an arc concave pressing cavity 71, and the juice extracting head 6 can be accommodated in the pressing cavity 71;
the driving screw is arranged in the casing 5, can rotate around the axis of the driving screw and can move back and forth, the driving screw thread S of the driving screw can be in direct threaded fit with the casing 5, namely, a threaded hole 51 which is directly arranged in the casing 5 and is matched with the driving screw thread S, the driving screw thread S of the driving screw can be in threaded fit with a clamping piece in the casing 5, such as a clamping block or a clamping opening or other components which are arranged in the casing 5 and are clamped with the driving screw thread S, the rear end of the driving screw is connected with the rocking handle 8, and the juice squeezing head 6 is connected with the front end of the limiting joint 3 and can rotate and move back and forth along with the front end of the limiting joint.
The power of the juicer is hand, so that the cost is lower compared with that of an electric juicer; the arrangement of the inserted link 61 can better mount fruits on the juice extracting head 6, when extracting juice, the rocking handle 8 drives the transmission screw to drive, under the action of screw thread, the transmission screw moves forward while rotating, the juice extracting head 6 is driven to move gradually close to the juice extracting cover 7 while rotating, the juice extracting process is rotary extrusion, the juice extracting is more complete, and the juice yield is high; the transmission thread S formed by the metal spring wires 2 is made of metal, so that the strength and the wear resistance of the transmission thread S are improved, the transmission thread S is not easy to wear after long-time use, the wire is not easy to slide in the transmission process, and the transmission stability of the transmission screw is ensured; a labor-saving lever is formed between the rocking handle 8 and the transmission screw, and the juicing operation is labor-saving.
When in juice extraction, orange, tangerine and lemon are cut in half, then the pulp end is mounted on the inserted link 61, the peel faces outwards (towards the juice extraction cover), the fixation of the fruit is completed, the fruit is not required to be taken out, and the juice extraction operation is more convenient. After the juice is squeezed, the juice squeezing cover 7 is opened, and the fruit peel mounted on the insert rod 61 is taken out, so that the juice is squeezed.
It should be noted that, in the description of the present embodiment, the directions or positional relationships indicated by the terms "front, rear", "left, right", "inner, outer", "upper, lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Claims (10)
1. A drive screw, characterized in that: comprising
A plastic rod (1) having an external thread section (11);
a spiral metal spring wire (2) which is screwed and clamped in a thread groove (111) of the external thread section (11); the groove width (D) of the thread groove (111) is matched with the width (D) of the metal spring wire (2), and the depth (H) of the thread groove (111) is smaller than the thickness (H) of the metal spring wire (2), so that the metal spring wire (2) screwed and clamped in the thread groove (111) is exposed out of the thread groove (111) to form a transmission thread (S).
2. The drive screw as set forth in claim 1, wherein: the device also comprises a limit joint (3) which is connected with the end part of the plastic rod (1) and limits and restrains the metal spring wire (2).
3. The drive screw as set forth in claim 2, wherein: the plastic rod (1) is further provided with a connecting section (12), the connecting section (12) is located at the outer end of the external thread section (11), the limiting joint (3) is fixed on the connecting section (12), the inner end of the limiting joint (3) is provided with a jack (31), and the connecting section (12) is inserted into and fixed in the jack (31).
4. A drive screw as claimed in claim 3, wherein: the limiting joint (3) is fixed on the connecting section (12) in an injection molding mode.
5. The drive screw as set forth in claim 4, wherein: the connecting section (12) is provided with a positioning hole (121) in a forming mode, and the limiting joint (3) is fixed on the connecting section (12) in an injection molding mode, and an inserting column (311) inserted into the positioning hole (121) is formed on the inner hole wall of the limiting joint (3).
6. The drive screw as set forth in claim 1, wherein: a metal mandrel (4) is arranged in the plastic rod (1).
7. The drive screw as set forth in claim 6, wherein: the metal core shaft (4) is injection molded with the plastic rod (1) as an insert.
8. The drive screw as set forth in claim 1, wherein: the plastic rod (1) is internally provided with a metal mandrel (4), the cross section of the metal mandrel (4) is polygonal, and the metal mandrel (4) is simultaneously inserted into and fixed in an inserting hole (31) of a limit joint (3) at the end part of the plastic rod (1).
9. The drive screw as set forth in claim 1, wherein: the cross section of the metal spring wire (2) is rectangular, and the cross section of the thread groove (111) is U-shaped.
10. A juice extractor includes
A housing (5);
the top of the juice extracting head (6) is transversely provided with a plug rod (61) for mounting fruits;
a juice extracting cover (7) connected to the shell (5), wherein the juice extracting cover (7) is provided with an arc-shaped concave pressing cavity (71), and the juice extracting head (6) can be accommodated in the pressing cavity (71);
the method is characterized in that: and also comprises
The drive screw according to any one of the preceding claims 1-9, said drive screw being provided in the housing (5) rotatable about its own axis and movable back and forth, the rear end of the drive screw being connected to the rocking handle (8), said juice extracting head (6) being connected to the front end of the drive screw and being rotatable therewith and movable back and forth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210835900.2A CN117426661A (en) | 2022-07-15 | 2022-07-15 | Transmission screw and juicer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210835900.2A CN117426661A (en) | 2022-07-15 | 2022-07-15 | Transmission screw and juicer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117426661A true CN117426661A (en) | 2024-01-23 |
Family
ID=89544969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210835900.2A Pending CN117426661A (en) | 2022-07-15 | 2022-07-15 | Transmission screw and juicer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117426661A (en) |
-
2022
- 2022-07-15 CN CN202210835900.2A patent/CN117426661A/en active Pending
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