CN117145852A - Locking plastic thread structure - Google Patents
Locking plastic thread structure Download PDFInfo
- Publication number
- CN117145852A CN117145852A CN202311437960.XA CN202311437960A CN117145852A CN 117145852 A CN117145852 A CN 117145852A CN 202311437960 A CN202311437960 A CN 202311437960A CN 117145852 A CN117145852 A CN 117145852A
- Authority
- CN
- China
- Prior art keywords
- metal insert
- hexagonal
- thread
- external
- columnar metal
- 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.)
- Granted
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 claims description 63
- 229910052751 metal Inorganic materials 0.000 claims description 63
- 239000000463 material Substances 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011295 pitch Substances 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/30—Locking exclusively by special shape of the screw-thread
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/02—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws divided longitudinally
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention belongs to the technical field of mechanical connection, and particularly relates to an anti-loosening plastic thread structure which comprises an internal thread member and an external thread member, wherein the internal thread member and the external thread member are in threaded connection with each other, the external thread member is made of plastic, the thread pitch of the external thread member is smaller than that of the internal thread member, the difference between the thread pitch of the external thread member and that of the internal thread member is 0.1mm-0.6mm, the thread pitch of the external thread member is 0.8mm, and the thread pitch of the internal thread member is 0.9mm. Because the pitch of the internal thread component and the external thread component are different, the thread tooth parts of the internal thread component and the external thread component interfere, which means that the external thread component made of plastic can deform, the friction force between tooth surfaces is increased, and the anti-loose effect is achieved.
Description
Technical Field
The invention belongs to the technical field of mechanical connection, and particularly relates to an anti-loosening plastic thread structure.
Background
In an automobile actuator, the main structure is a motor and worm gear pair, and an adjusting screw is arranged at the top end of a motor shaft and is mainly used for adjusting the axial movement clearance of the motor shaft, so that the clearance is ensured to be in a certain range, and the clearance is overlarge and the movement is too large, so that noise is caused; the gap is too small, the motor current is too large, and the motor generates too much heat, so that the service life is influenced. Most of the existing copper screws on the market have the defects that:
1. the metal shaft and copper are easy to wear;
2. the copper screw is easy to fall off;
3. when the motor shaft is in contact with the copper screw, the noise is particularly loud;
4. when the copper screw is added with the screw glue, the copper screw cannot be adjusted after being worn, so that the axial gap is gradually increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a locking plastic thread structure.
In order to solve the technical problems, the invention provides a locking plastic thread structure which comprises an internal thread component and an external thread component, wherein the internal thread component and the external thread component are in threaded connection, the external thread component is made of plastic, the thread pitch of the external thread component is smaller than that of the internal thread component, the thread pitch difference between the external thread component and the internal thread component is 0.1mm-0.6mm, the thread pitch of the external thread component is 0.8mm, and the thread pitch of the internal thread component is 0.9mm.
Preferably, the plastic used to make the externally threaded member is selected to be PA46 material, and the externally threaded member may be injection molded with a mold and then ground.
Preferably, a cylindrical metal insert is also included, the cylindrical metal insert being embedded within the externally threaded member.
Preferably, the cylindrical metal insert further comprises an outer hexagonal part and an inner hexagonal part, wherein the first end of the cylindrical metal insert is embedded into the inner side of the outer threaded member but can be inserted and removed, the second end of the cylindrical metal insert extends out of the outer threaded member, and the distance from the end of the cylindrical metal insert extending out of the outer threaded member is 1/5 of the length of the cylindrical metal insert; the first and second ends of the cylindrical metal insert are provided with an inner hexagonal portion and an outer hexagonal portion, respectively, for replacing the screwing of the male screw member.
Preferably, the cylindrical metal insert is provided with a hexagonal sliding column, the middle part of the cylindrical metal insert is provided with a hexagonal through hole, the hexagonal through hole of the cylindrical metal insert is provided with the hexagonal sliding column in a sliding manner, one end of the hexagonal sliding column, which slides out of the cylindrical metal insert, replaces an outer hexagonal part, and the hexagonal sliding column is positioned between one end of the cylindrical metal insert and the cylindrical metal insert to form an inner hexagonal part.
Preferably, the inside of the externally threaded member is provided with a filling groove into which the hexagonal spool is inserted.
Preferably, the cylindrical metal insert further comprises a filling block, the filling block positioned on one side of the hexagonal sliding column is arranged on the hexagonal through hole of the cylindrical metal insert in a sliding mode, and the filling block is suitable for supplementing a gap between the inner hexagonal part and the filling groove.
Preferably, four bar-shaped columns are uniformly protruded at intervals on the side edges of the columnar metal insert, and the inner sides of the external thread members are recessed with bar-shaped grooves which are the same in number and matched with the bar-shaped columns.
Preferably, the hexagonal sliding column slides towards the first end of the columnar metal insert to be completely slid out and separated, and the hexagonal sliding column slides towards the second end of the columnar metal insert to be limited by a preset distance, so that the hexagonal sliding column cannot be completely slid out and separated from the second end of the columnar metal insert.
On the basis of overcoming the defects of the prior art, the invention has the following beneficial effects:
1. because the pitch of the internal thread component and the external thread component are different, the thread tooth parts of the internal thread component and the external thread component interfere, which means that the external thread component made of plastic can deform, the friction force between tooth surfaces is increased, and the anti-loose effect is achieved.
2. The external thread member made of the PA46 material provides excellent mechanical property, excellent wear resistance, low friction and excellent fluidity under high temperature condition, and has more convenient processing and flexible special design.
3. The external hexagonal part and the internal hexagonal part replace the external threaded component to be screwed, so that the phenomenon of slipping and abrasion of the external threaded component made of plastic is avoided, and meanwhile, the stability and the bearing capacity of the columnar metal insert are improved.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a schematic view of the internally threaded member and externally threaded member of the present invention.
FIG. 3 is a schematic view of a columnar metal insert of the present invention.
FIG. 4 is a schematic representation of a filler block of the present invention corresponding to a filler groove in an externally threaded member, wherein the externally threaded member is represented by a cross-sectional line.
Fig. 5 is a schematic view of the hexagonal slide column of the present invention pushing out the packing.
The marks in the drawings provided by the invention are as follows: 1-internal screw thread component, 2-external screw thread component, 2 a-filling groove, 3-column metal insert, 3 a-external hexagonal part, 3 b-internal hexagonal part, 30-hexagonal slide column and 4-filling block.
Detailed Description
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 devices or elements 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.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it should be understood that the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not form a conflict with each other.
Example 1: the anti-loosening plastic thread structure comprises an internal thread member 1 and an external thread member 2, wherein the internal thread member 1 and the external thread member 2 are in threaded connection with each other, the external thread member 2 is made of plastic, the thread pitch of the external thread member 2 is smaller than that of the internal thread member 1, the thread pitch difference between the thread pitch of the external thread member 2 and that of the internal thread member 1 is 0.1mm-0.6mm, the thread pitch of the external thread member 2 is 0.8mm, and the thread pitch of the internal thread member 1 is 0.9mm; because of different pitches, the thread teeth of the internal thread member 1 and the thread teeth of the external thread member 2 interfere, which means that the external thread member 2 made of plastic can deform, namely, reverse acting force is generated through self deformation stress, so that filling extrusion is not needed to be carried out by using screw glue, meanwhile, the friction force between tooth surfaces is increased, and the anti-loosening effect is achieved.
As a preferred embodiment, the plastic used for manufacturing the external thread member 2 is PA46 material, and the external thread member 2 can be manufactured by injection molding with a mold and polishing; the PA46 material has good wear resistance, the working temperature can reach 150 ℃, and the effect of reducing noise can be achieved.
Example 2: on the basis of the embodiment 1, as shown in fig. 1, the external thread member further comprises a columnar metal insert 3, wherein the columnar metal insert 3 is embedded in the external thread member 2; the plastic external screw thread member 2 is compensated for toughness by a metal insert, and the bearing capacity and various aspects are improved, but the plastic external screw thread member 2 is not directly contacted with the internal screw thread member 1.
As shown in fig. 3, the cylindrical metal insert 3 further comprises an outer hexagonal part 3a and an inner hexagonal part 3b, wherein a first end of the cylindrical metal insert 3 is embedded into but can be inserted and removed from the inner side of the external threaded member 2, a second end of the cylindrical metal insert 3 extends out of the external threaded member 2, and the distance from the cylindrical metal insert 3 to the end of the external threaded member 2 is 1/5 of the length of the cylindrical metal insert 3, so that the cylindrical metal insert 3 can be recovered or directly taken out by stripping the external threaded member 2; the first end and the second end of the columnar metal insert 3 are respectively provided with an inner hexagonal part 3b and an outer hexagonal part 3a for replacing screwing the external screw member 2, the positions of the inner hexagonal part 3b and the outer hexagonal part 3a are replaced when the columnar metal insert 3 is disassembled, and screwing is performed on the inner hexagonal part 3b or the outer hexagonal part 3a by using different tool cooperation, so that the use modes are diversified.
As shown in fig. 4, the sliding device further comprises a hexagonal sliding column 30, a hexagonal through hole is formed in the middle of the columnar metal insert 3, the hexagonal sliding column 30 is slidably arranged on the hexagonal through hole of the columnar metal insert 3, one end of the hexagonal sliding column 30, which is outside the columnar metal insert 3, replaces the outer hexagonal part 3a, an inner hexagonal part 3b is formed between one end of the hexagonal sliding column 30, which is located in the columnar metal insert 3, and the columnar metal insert 3, the hexagonal sliding column 30 can conveniently replace the outer hexagonal part 3a and the inner hexagonal part 3b, and if the hexagonal sliding column 30 extends out of the first end of the columnar metal insert 3, the hexagonal sliding column 30 replaces the outer hexagonal part 3a for use, and vice versa.
As shown in fig. 4, a filling groove 2a into which the hexagonal slide column 30 is inserted is formed in the inner side of the externally threaded member 2, and when the columnar metal insert 3 is fitted into the inner side of the externally threaded member 2, one end of the hexagonal slide column 30 is inserted into the filling groove 2a, and at this time, an inner hexagonal portion 3b is formed between the other end of the hexagonal slide column 30 and the columnar metal insert 3, thereby avoiding high-frequency vibration from being reciprocally transmitted in the cavity.
As shown in fig. 4 and 5, the filling block 4 is further included, the filling block 4 located at one side of the hexagonal sliding column 30 is slidably disposed on the hexagonal through hole of the columnar metal insert 3, the filling block 4 is suitable for supplementing a gap between the inner hexagonal part 3b and the filling groove 2a, when the inner hexagonal part 3b corresponds to the filling groove 2a, the filling block 4 is used for filling, so that the cavity can be reduced, the hexagonal sliding column 30 is pushed to push the filling block 4 out of the columnar metal insert 3, and when the outer hexagonal part 3a corresponds to the filling groove 2a, the filling block 4 can be taken out and recovered or filled into the inner hexagonal part 3b.
As a preferred example, the columnar metal insert 3 has four bar-shaped columns uniformly protruded at intervals on the side thereof, and the inside of the externally threaded member 2 is recessed with the same number of bar-shaped grooves which are engaged with the bar-shaped columns, whereby stability is increased by the bar-shaped grooves and the bar-shaped columns.
As a preferred embodiment, the hexagonal sliding pillar 30 slides toward the first end of the cylindrical metal insert 3 to be completely slid out and separated, and the hexagonal sliding pillar 30 slides toward the second end of the cylindrical metal insert 3 to be limited by a predetermined distance, so that it cannot be completely slid out and separated from the second end of the cylindrical metal insert 3.
It is apparent that the above described embodiments are only some, but not all, embodiments of the present invention, which merely represent preferred embodiments of the present invention, which are described more specifically and in detail, but are not to be construed as limiting the scope of the invention.
It should be noted that modifications, numbers, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the invention, and therefore, based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a locking plastic thread structure, is including internal screw thread component (1) and external screw thread component (2), internal screw thread component (1) and external screw thread component (2) interconnect threaded connection, its characterized in that: the external thread member (2) is made of plastic, and the thread pitch of the external thread member (2) is smaller than that of the internal thread member (1);
the plastic used to make the externally threaded member (2) is selected to be PA46 material;
the novel screw thread structure further comprises a columnar metal insert (3), and the columnar metal insert (3) is embedded into the external screw thread member (2).
2. A locking plastic thread structure as claimed in claim 1, wherein: the cylindrical metal insert is characterized by further comprising an outer hexagonal part (3 a) and an inner hexagonal part (3 b), wherein the first end of the cylindrical metal insert (3) is embedded into the inner side of the external threaded member (2) but can be inserted and pulled out, and the second end of the cylindrical metal insert (3) extends out of the external threaded member (2); the first end and the second end of the columnar metal insert (3) are respectively provided with an inner hexagonal part (3 b) and an outer hexagonal part (3 a).
3. A locking plastic thread structure as claimed in claim 2, wherein: the hexagonal sliding column is characterized by further comprising a hexagonal sliding column (30), the hexagonal sliding column (30) is arranged on the columnar metal insert (3) in a sliding manner, one end of the hexagonal sliding column (30) which slides out of the columnar metal insert (3) replaces an outer hexagonal part (3 a), and an inner hexagonal part (3 b) is formed between one end of the hexagonal sliding column (30) which is positioned in the columnar metal insert (3) and the columnar metal insert (3).
4. A locking plastic thread structure according to claim 3, wherein: a filling groove (2 a) into which the hexagonal slide column (30) is inserted is formed in the inner side of the external thread member (2).
5. The locking plastic thread structure as recited in claim 4, wherein: the cylindrical metal insert (3) is provided with a filling block (4) on one side of the hexagonal sliding column (30) in a sliding manner, and the filling block (4) is suitable for supplementing a gap between the inner hexagonal part (3 b) and the filling groove (2 a).
6. A locking plastic thread structure as claimed in claim 2, wherein: the side of the columnar metal insert (3) is provided with a bar-shaped column in a protruding mode, and the inner side of the external thread component (2) is recessed with a bar-shaped groove matched with the bar-shaped column.
7. A locking plastic thread structure according to claim 3, wherein: the hexagonal sliding column (30) slides towards the first end of the columnar metal insert (3) and can be completely slid out and separated, and the hexagonal sliding column (30) slides towards the second end of the columnar metal insert (3) with a limit of a preset distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311437960.XA CN117145852B (en) | 2023-11-01 | 2023-11-01 | Locking plastic thread structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311437960.XA CN117145852B (en) | 2023-11-01 | 2023-11-01 | Locking plastic thread structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117145852A true CN117145852A (en) | 2023-12-01 |
| CN117145852B CN117145852B (en) | 2024-01-16 |
Family
ID=88912507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311437960.XA Active CN117145852B (en) | 2023-11-01 | 2023-11-01 | Locking plastic thread structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117145852B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6927986U (en) * | 1968-07-15 | 1973-01-25 | Standard Pressed Steel Co | SELF-LOCKING THREADED INSERT. |
| CN1352734A (en) * | 1999-06-22 | 2002-06-05 | 永久技术股份有限公司 | Locking nut, bolt and clip systems and assembles |
| CN102678714A (en) * | 2012-05-28 | 2012-09-19 | 赵群燕 | Dismountable riveted structure |
| CN205503680U (en) * | 2016-01-26 | 2016-08-24 | 上海兆果五金制品有限公司 | Car fastener for inserts of moulding plastics |
| TW201823597A (en) * | 2016-12-29 | 2018-07-01 | 詮豐精密工具股份有限公司 | Threaded-engaging structure |
| CN210686590U (en) * | 2019-06-25 | 2020-06-05 | 雍珊麟 | Threaded fastener and threaded connection structure |
| CN111288068A (en) * | 2018-12-06 | 2020-06-16 | 苏州迈特科技有限公司 | Interference type anti-loose self-locking structural part |
| CN211623914U (en) * | 2019-12-13 | 2020-10-02 | 芜湖恒信汽车内饰制造有限公司 | BOSS column structure with internal and external thread metal inserts |
| CN215928073U (en) * | 2021-05-07 | 2022-03-01 | Kme特殊产品有限责任两合公司 | Metal cast plate, threaded insert and metal cast plate system |
-
2023
- 2023-11-01 CN CN202311437960.XA patent/CN117145852B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6927986U (en) * | 1968-07-15 | 1973-01-25 | Standard Pressed Steel Co | SELF-LOCKING THREADED INSERT. |
| CN1352734A (en) * | 1999-06-22 | 2002-06-05 | 永久技术股份有限公司 | Locking nut, bolt and clip systems and assembles |
| CN102678714A (en) * | 2012-05-28 | 2012-09-19 | 赵群燕 | Dismountable riveted structure |
| CN205503680U (en) * | 2016-01-26 | 2016-08-24 | 上海兆果五金制品有限公司 | Car fastener for inserts of moulding plastics |
| TW201823597A (en) * | 2016-12-29 | 2018-07-01 | 詮豐精密工具股份有限公司 | Threaded-engaging structure |
| CN111288068A (en) * | 2018-12-06 | 2020-06-16 | 苏州迈特科技有限公司 | Interference type anti-loose self-locking structural part |
| CN210686590U (en) * | 2019-06-25 | 2020-06-05 | 雍珊麟 | Threaded fastener and threaded connection structure |
| CN211623914U (en) * | 2019-12-13 | 2020-10-02 | 芜湖恒信汽车内饰制造有限公司 | BOSS column structure with internal and external thread metal inserts |
| CN215928073U (en) * | 2021-05-07 | 2022-03-01 | Kme特殊产品有限责任两合公司 | Metal cast plate, threaded insert and metal cast plate system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117145852B (en) | 2024-01-16 |
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