CN219623053U - Combined lock screw for automobile - Google Patents

Combined lock screw for automobile Download PDF

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Publication number
CN219623053U
CN219623053U CN202321159513.8U CN202321159513U CN219623053U CN 219623053 U CN219623053 U CN 219623053U CN 202321159513 U CN202321159513 U CN 202321159513U CN 219623053 U CN219623053 U CN 219623053U
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CN
China
Prior art keywords
screw
hole
nut
cylindrical section
limiting sleeve
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Active
Application number
CN202321159513.8U
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Chinese (zh)
Inventor
张素奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lishui Haoyu Fasteners Co ltd
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Lishui Haoyu Fasteners Co ltd
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Priority to CN202321159513.8U priority Critical patent/CN219623053U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Abstract

The utility model discloses a combined anti-loose screw for an automobile, which comprises a first screw, a second screw and a nut, wherein a through hole is formed in the first screw, the upper end of the through hole is a screw hole, the through hole below the screw hole is a round hole, the bottom of the through hole is also provided with a reducing part, a plurality of notches are further arrayed on the first screw at the periphery of the round hole, a limiting sleeve is inserted in the round hole, the bottom of the limiting sleeve is limited by the reducing part, the periphery of the limiting sleeve is elastically connected with a plurality of buckles corresponding to the notches, the nut is screwed on the first screw, one end of the nut is provided with a ring, an elastic ring is arranged in the ring, the second screw is provided with a thread section and a cylindrical section, the second screw is screwed in from the top end of the first screw, the cylindrical section of the second screw is clamped into the limiting sleeve, the buckles extend out of the first screw from the corresponding notches under the extrusion of the cylindrical section.

Description

Combined lock screw for automobile
Technical Field
The utility model relates to a combined type locking screw for an automobile.
Background
Many parts in the car all need to utilize screw and nut to fix to the car frame, because the car is difficult to take place the vibration in the running process, along with the long-time operation of car, these screw easily take place not hard up and make the part pine take off, and then lead to the car to produce various abnormal sound, greatly influence driver and the experience of personnel by bus.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a combined type lock screw for an automobile.
The technical scheme of the utility model is as follows: a combined anti-loosening screw for an automobile comprises a first screw, a second screw and a nut;
the first screw is internally provided with a through hole extending along the axial direction of the first screw, the upper end of the through hole is a screw hole, the through hole below the screw hole is a round hole with a smooth inner wall, the bottom of the through hole is also provided with a reduced diameter part with a limiting effect, the first screw at the periphery of the round hole is also provided with a plurality of notches in an array, a limiting sleeve is inserted in the round hole, the bottom of the limiting sleeve is limited by the reduced diameter part, and the periphery of the limiting sleeve is elastically connected with a plurality of buckles corresponding to the notches;
the nut is in threaded connection with the first screw, one end of the nut, facing the nut of the first screw, is provided with a circle of convex ring, the convex ring is a thin-wall convex ring, an elastic ring is arranged in the convex ring, and when the first screw and the nut are fastened on the connecting piece, the convex ring is extruded and deformed to enable the elastic ring to be hooped on the first screw;
the second screw is provided with a threaded section corresponding to the threaded hole and a cylindrical section corresponding to the limiting sleeve, the second screw is screwed in from the top end of the first screw, the cylindrical section of the second screw is clamped into the limiting sleeve, each buckle extends out of the first screw from each corresponding notch under the extrusion of the cylindrical section, and each buckle is abutted with one end of the nut, far away from the first screw, of the nut to limit the nut.
Further, the limiting sleeve is provided with a plurality of windows, each buckle is arranged on the window, the bottom of each buckle is connected with the limiting sleeve into a whole, the protruding portion of each buckle faces the inner side of the limiting sleeve, so that the limiting sleeve is conveniently inserted into the first screw, and when the cylindrical section of the second screw is inserted, each protrusion enables each buckle to be turned outwards under the action of the cylindrical section.
Specifically, one end of each buckle bulge outside the first screw is triangular.
Further, a clamping groove corresponding to the buckle is formed in one end, far away from the nut of the first screw, of the nut, and the section of the clamping groove is triangular.
Further, the inner diameter of the elastic ring is larger than the outer diameter of the first screw.
Further, the inner diameter of the screw hole in the through hole is larger than the inner diameter of the round hole.
Further, the outer diameter of the cylindrical section of the second screw corresponds to the inner diameter of the limit sleeve, and the limit sleeve is abutted between the inner wall of the round hole and the outer wall of the cylindrical section.
Further, the end of the cylindrical section of the second screw is in a frustum shape.
Further, after the second screw is screwed into the first screw, the end of the cylindrical section of the second screw is flush with the end of the reduced diameter portion of the first screw.
Furthermore, a guide groove is further formed in the through hole, and a guide lug corresponding to the guide groove is further arranged on the outer side of the limiting sleeve.
The beneficial effects of the utility model are as follows: after the nut is fastened, the deformed convex rings, the deformed elastic rings and the deformed buckles perform double limiting on the two ends of the nut, the first screw and the first nut are not easy to loosen under long-time vibration, and the nut is reliable and durable; the second screw falls into the first screw, so that the strength of the hollow first screw is not greatly reduced; in addition, after the screw and the nut are disassembled, only the stop collar and the deformed nut of the convex ring are required to be replaced, and the first screw and the second screw with complex structures can be reused, so that the maintenance cost can be reduced to a certain extent.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model after the first screw and the second screw are connected;
fig. 3 is a top view of the present utility model after the first screw and the second screw are coupled.
In the figure: the nut comprises a first screw 1, a second screw 2, a nut 3, a diameter-reducing part 4, a limit sleeve 5, a buckle 6, a convex ring 7 and an elastic ring 8.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
Referring to fig. 1 to 3, a combination type lock screw for an automobile comprises a first screw 1, a second screw 2 and a nut 3;
the first screw 1 is internally provided with a through hole extending along the axial direction of the first screw 1, the upper end of the through hole is a screw hole, the through hole below the screw hole is a round hole with a smooth inner wall, the bottom of the through hole is also provided with a reducing part 4 with a limiting effect, the first screw 1 at the periphery of the round hole is also provided with a plurality of notches in an array manner, a limiting sleeve 5 is inserted in the round hole, the bottom of the limiting sleeve is limited by the reducing part 4, and the periphery of the limiting sleeve 5 is elastically connected with a plurality of buckles 6 corresponding to the notches;
the nut 3 is in threaded connection with the first screw 1, one end of the nut 3, facing the nut of the first screw 1, is provided with a circle of convex ring 7, the convex ring 7 is a thin-wall convex ring, an elastic ring 8 is arranged in the convex ring 7, and when the first screw 1 and the nut 3 are fastened on a connecting piece, the convex ring 7 is extruded and deformed to enable the elastic ring 8 to be hooped on the first screw 1, so that the nut 3 is prevented from loosening due to vibration;
the second screw 2 is provided with a thread section corresponding to the screw hole and a cylindrical section corresponding to the limit sleeve 5, the second screw 2 is screwed in from the top end of the first screw 1, the cylindrical section of the second screw is clamped into the limit sleeve 5, each buckle 6 extends out of the first screw 1 from each corresponding notch under the extrusion of the cylindrical section, and each buckle 6 is abutted with one end of the nut 3, which is far away from the first screw 1, so as to limit the nut 3, and further prevent the first screw 1 and the nut 3 from loosening.
The beneficial effects of the structure are as follows: after the nut 3 is fastened, the deformed convex ring 7, the deformed elastic ring 8 and the deformed clamping buckle 6 perform double limiting on the two ends of the nut 3, and the first screw 1 and the nut 3 are not easy to loosen under long-time vibration, so that the nut is reliable and durable; the second screw 2 falls into the first screw 1, so that the strength of the hollow first screw 1 is not greatly reduced; in addition, after the screws and the nuts are dismounted, only the deformed nuts of the limiting sleeve 5 and the convex ring 7 are required to be replaced, and the first screw 1 and the second screw 2 with complex structures can be reused, so that the maintenance cost can be reduced to a certain extent.
In another embodiment, as shown in fig. 2, the stop collar 5 has a plurality of windows, each of the buckles 6 is disposed on the window and the bottom of the buckle is integrally connected with the stop collar 5, and the protruding portion of each of the buckles 6 is disposed towards the inner side of the stop collar 5, so that the stop collar 5 is inserted into the first screw 1, and when the cylindrical section of the second screw 2 is inserted, each of the protrusions causes each of the buckles 6 to turn outwards under the action of the cylindrical section.
Specifically, the limiting sleeve 5 and each buckle 6 are of an engineering plastic or stainless steel integrated structure.
In another embodiment, as shown in fig. 2, an end of each of the buckles 6 protruding outside the first screw 1 is triangular.
In another embodiment, as shown in fig. 1, one end of the nut 3 away from the nut of the first screw 1 is provided with a clamping groove corresponding to the buckle 6, and the cross section of the clamping groove is triangular, so that the buckle 6 can more firmly limit the nut 3.
In another embodiment, the inner diameter of the elastic ring 8 is larger than the outer diameter of the first screw 1, so as to avoid the elastic ring 8 from being damaged by the external thread of the first screw 1 when the nut 3 is screwed with the first screw 1.
In another embodiment, the inner diameter of the screw hole in the through hole is larger than the inner diameter of the round hole, so that the stop collar 5 can be smoothly inserted.
In another embodiment, the outer diameter of the cylindrical section of the second screw 2 corresponds to the inner diameter of the limit sleeve 5, and the limit sleeve 5 is abutted between the inner wall of the round hole and the outer wall of the cylindrical section.
In another embodiment, as shown in fig. 2, the end of the cylindrical section of the second screw 2 is in a frustum shape, so as to facilitate the smooth insertion into the stop collar 5.
In another embodiment, as shown in fig. 1, after the second screw 2 is screwed into the first screw 1, the end of the cylindrical section of the second screw 2 is flush with the end of the reduced diameter portion 4 of the first screw 1.
In another embodiment, a guiding groove is further provided in the through hole, and a guiding bump corresponding to the guiding groove is further provided on the outer side of the stop collar 5, so that each buckle 6 is disposed corresponding to each notch after the stop collar 5 is inserted.

Claims (10)

1. The combined anti-loosening screw for the automobile is characterized by comprising a first screw (1), a second screw (2) and a nut (3);
the novel screw comprises a first screw (1), a second screw (1) and a limiting sleeve, wherein the first screw (1) is internally provided with a through hole extending along the axial direction of the first screw (1), the upper end of the through hole is a screw hole, the through hole below the screw hole is a round hole with a smooth inner wall, the bottom of the through hole is also provided with a reducing part (4) with a limiting effect, the first screw (1) at the periphery of the round hole is also provided with a plurality of notches in an array, a limiting sleeve (5) is inserted in the round hole, the bottom of the limiting sleeve is limited by the reducing part (4), and the periphery of the limiting sleeve (5) is elastically connected with a plurality of buckles (6) corresponding to the notches;
the nut (3) is in threaded connection with the first screw (1), one end of the nut (3) facing the nut of the first screw (1) is provided with a circle of convex ring (7), the convex ring (7) is a thin-wall convex ring, an elastic ring (8) is arranged in the convex ring (7), and when the first screw (1) and the nut (3) are fastened on a connecting piece, the convex ring (7) is extruded and deformed to enable the elastic ring (8) to be hooped on the first screw (1);
the second screw (2) is provided with a threaded section corresponding to the threaded hole and a cylindrical section corresponding to the limiting sleeve (5), the second screw (2) is screwed in from the top end of the first screw (1) and is clamped into the limiting sleeve (5) by the cylindrical section, each buckle (6) stretches out of the first screw (1) from each corresponding notch under the extrusion of the cylindrical section, and each buckle (6) is abutted with one end of the nut (3) away from the nut of the first screw (1) to limit the nut (3).
2. The combined lock screw for the automobile according to claim 1, wherein the limiting sleeve (5) is provided with a plurality of windows, each buckle (6) is arranged on the window, the bottom of each buckle is connected with the limiting sleeve (5) into a whole, the protruding part of each buckle (6) faces the inner side of the limiting sleeve (5), and when the cylindrical section of the second screw (2) is inserted, each protrusion enables each buckle (6) to be turned outwards under the action of the cylindrical section.
3. A combination lock screw for a vehicle according to claim 2, wherein one end of each of the buckles (6) protruding outside the first screw (1) is triangular.
4. A combined locking screw for automobile according to claim 3, characterized in that the end of the nut (3) far from the nut of the first screw (1) is provided with a clamping groove corresponding to the buckle (6), and the section of the clamping groove is triangular.
5. A combination lock screw for a vehicle as claimed in claim 4, characterized in that the inner diameter of the elastic ring (8) is larger than the outer diameter of the first screw (1).
6. The combination lock screw for an automobile as claimed in claim 5, wherein the inner diameter of the screw hole in the through hole is larger than the inner diameter of the circular hole.
7. The combined locking screw for the automobile according to claim 6, wherein the outer diameter of the cylindrical section of the second screw (2) corresponds to the inner diameter of the limit sleeve (5), and the limit sleeve (5) is abutted between the inner wall of the round hole and the outer wall of the cylindrical section.
8. A combination lock screw for an automobile according to claim 7, wherein the cylindrical section of the second screw (2) has a truncated cone shape at its end.
9. A combination lock screw for an automobile according to claim 8, wherein after the second screw (2) is screwed into the first screw (1), the end of the cylindrical section of the second screw (2) is flush with the end of the reduced diameter portion (4) of the first screw (1).
10. The combined lock screw for the automobile according to claim 9, wherein a guide groove is further formed in the through hole, and a guide projection corresponding to the guide groove is further formed on the outer side of the limit sleeve (5).
CN202321159513.8U 2023-05-15 2023-05-15 Combined lock screw for automobile Active CN219623053U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321159513.8U CN219623053U (en) 2023-05-15 2023-05-15 Combined lock screw for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321159513.8U CN219623053U (en) 2023-05-15 2023-05-15 Combined lock screw for automobile

Publications (1)

Publication Number Publication Date
CN219623053U true CN219623053U (en) 2023-09-01

Family

ID=87775351

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321159513.8U Active CN219623053U (en) 2023-05-15 2023-05-15 Combined lock screw for automobile

Country Status (1)

Country Link
CN (1) CN219623053U (en)

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