CN217926719U - Assembly part for preventing screw from falling off, anti-falling screw assembly and electronic equipment - Google Patents
Assembly part for preventing screw from falling off, anti-falling screw assembly and electronic equipment Download PDFInfo
- Publication number
- CN217926719U CN217926719U CN202222452968.0U CN202222452968U CN217926719U CN 217926719 U CN217926719 U CN 217926719U CN 202222452968 U CN202222452968 U CN 202222452968U CN 217926719 U CN217926719 U CN 217926719U
- Authority
- CN
- China
- Prior art keywords
- hole
- screw
- threaded section
- assembly
- nut
- 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.)
- Active
Links
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model belongs to the equipment assembly field, and discloses an assembly part for preventing a screw from falling off, an anti-falling screw component and electronic equipment, wherein the screw comprises a nut, an unthreaded section and a threaded section which are connected in sequence, and the outer diameter of the threaded section is larger than that of the unthreaded section; the assembly part is provided with a through hole, the non-threaded section is arranged in the through hole, the threaded section is positioned on one side of the through hole, the nut is positioned on the other side of the through hole, the inner diameter of the through hole is larger than the outer diameter of the non-threaded section and smaller than the outer diameter of the threaded section, and the length of the non-threaded section is larger than the height of the through hole. The utility model discloses not only accessible screw is fixed the assembly part on electronic equipment, moreover after assembly part and electronic equipment separation, still can prevent that the screw from droing and losing from the assembly part.
Description
Technical Field
The utility model relates to an equipment package technical field indicates an assembly part, anticreep screw subassembly and electronic equipment for preventing the screw from droing especially.
Background
The conventional electronic product assembly is fixed by screws, and for example, a battery cover, a rear cover and other cover plates are usually fixed on the housing by screws, so as to achieve detachable connection of the battery cover, the rear cover and other cover plates with the housing. When the cover plate or the rear cover needs to be opened, the screws are screwed out, and the cover plate or the rear cover is detached from the shell. In the existing structure, the screw falls off from the cover plate or the rear cover immediately after the cover plate or the rear cover is opened, and the screw is easy to lose due to small volume of the screw, which brings difficulty to a user to reassemble the electronic product.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an assembly part, anticreep screw subassembly and electronic equipment for preventing the screw from droing, not only simple structure can prevent moreover that the screw from droing and losing from the assembly part.
The utility model provides a technical scheme as follows:
on the one hand, an assembly part for preventing the screw from falling off is provided, the screw is including the nut, the non-threaded section and the screw thread section that connect gradually, the external diameter of screw thread section is greater than the external diameter of non-threaded section, be equipped with the through-hole on the assembly part, the non-threaded section sets up in the through-hole, the screw thread section is located one side of through-hole, the nut is located the opposite side of through-hole, the internal diameter of through-hole is greater than the external diameter of non-threaded section just is less than the external diameter of screw thread section, the length of non-threaded section is greater than the height of through-hole.
In some embodiments, a side of the through hole close to the nut is provided with a chamfer, and a side of the through hole close to the threaded section is a right angle.
In some embodiments, an abutting portion is provided on a side of the fitting away from the nut, a through hole communicated with the through hole is provided in the abutting portion, and an inner diameter of the through hole is larger than an outer diameter of the threaded section.
In some embodiments, a perpendicular distance from a face of the abutment remote from the through hole to a face of the through hole provided with the right angle is greater than a length of the threaded section;
the vertical distance from one surface of the abutting part far away from the through hole to one surface of the through hole provided with the right angle is smaller than the difference between the length of the non-threaded section and the height of the through hole.
In some embodiments, the perpendicular distance from the surface of the abutting part far away from the through hole to the surface of the through hole provided with the right angle is 0.4-0.8 mm larger than the length of the threaded section; and/or;
the difference between the length of the non-threaded section and the height of the through hole is 0.2-0.4 mm greater than the vertical distance from one surface of the abutting part far away from the through hole to one surface of the through hole provided with the right angle.
In some embodiments, the inner diameter of the through hole is 0.1 to 0.2mm larger than the outer diameter of the unthreaded section; and/or;
the inner diameter of the through hole is 0.4-0.6 mm smaller than the outer diameter of the thread section.
In another aspect, an anti-drop screw assembly is also provided, which comprises the assembly for preventing the screw from dropping and the screw according to any one of the above embodiments.
In some embodiments, the screw further comprises a handle disposed on the nut.
In some embodiments, the handle is semi-annular, one end of the handle is rotatably connected with one side of the nut through a rotating shaft, and the other end of the handle is rotatably connected with the other side of the nut through a rotating shaft;
in the using state, the handle rotates to the upper part of the screw cap and is vertical to the top surface of the screw cap;
in the storage state, the handle rotates to one side of the nut and is parallel to the top surface of the nut.
On the other hand, an electronic device is further provided, which includes a housing and the anti-drop screw assembly according to any of the above embodiments, wherein a nut is disposed in the housing, and a threaded section of the screw is threadedly connected to the nut to fix the assembly to the housing.
The technical effects of the utility model reside in that: the assembly part is provided with a through hole, when the screw is arranged on the assembly part, the non-threaded section of the screw is positioned in the through hole, the screw cap of the screw is positioned at one side of the through hole, the threaded section of the screw is positioned at the other side of the through hole, and the outer diameter of the threaded section is larger than the inner diameter of the through hole, so that the threaded section cannot be separated from the through hole, and the screw is prevented from being lost; the inner diameter of the through hole is larger than the outer diameter of the non-threaded section, and the length of the non-threaded section is larger than the height of the through hole, so that the non-threaded section can freely move in the through hole along the axial direction of the screw, and the threaded section can be fully locked with or separated from a nut in the shell of the electronic equipment; the assembly and disassembly of the assembly part and the electronic equipment are facilitated.
Drawings
The invention will be described in further detail with reference to the following drawings and embodiments:
FIG. 1 is a schematic cross-sectional view of a mounting member for preventing a screw from falling off according to an embodiment of the present disclosure before mounting with the screw;
FIG. 2 is a schematic cross-sectional view of a screw and a fitting for preventing the screw from falling off according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a screw provided in an embodiment of the present application;
FIG. 4 is a schematic diagram of a mounting member for preventing a screw from falling off and dimensional reference numbers of the screw after mounting according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 6 is a schematic cross-sectional view of an electronic device provided in an embodiment of the present application;
fig. 7 is a schematic view of an assembly process of an electronic device according to an embodiment of the present application.
The reference numbers illustrate:
10. a screw; 11. a nut; 12. a non-threaded section; 13. a threaded segment; 14. a handle; 20. an assembly member; 21. a through hole; 22. chamfering; 23. right angle; 24. an abutting portion; 241. a through hole; 30. a housing; 31. and a nut.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. Moreover, in the interest of brevity and understanding, only one of the components having the same structure or function is illustrated schematically or designated in some of the drawings. In this document, "a" means not only "only one of this but also a case of" more than one ".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
As shown in fig. 1 to 3, in an assembly for preventing a screw from falling off, a screw 10 includes a nut 11, an unthreaded section 12 and a threaded section 13 which are connected in sequence, and an outer diameter of the threaded section 13 is larger than that of the unthreaded section 12; the assembly part 20 is provided with a through hole 21, the non-threaded section 12 is arranged in the through hole 21, the threaded section 13 is positioned on one side of the through hole 21, the screw cap 11 is positioned on the other side of the through hole 21, the inner diameter of the through hole 21 is larger than the outer diameter of the non-threaded section 12 and smaller than the outer diameter of the threaded section 13, and the length of the non-threaded section 12 is larger than the height of the through hole 21.
In this embodiment, the assembly 20 may be any one of the components that need to be connected to the electronic device, for example, the assembly 20 includes but is not limited to a battery cover, a decoration, a front shell, and the like of the electronic device, the assembly 20 is mounted on the electronic device through the screw 10 to achieve detachable connection between the assembly 20 and the electronic device, and it should be noted that the assembly 20 may also be any one of two components that need to be connected. The present embodiment is designed to prevent the screw 10 from being detached from the assembly member 20 after the assembly member 20 is detached from the electronic device, and to prevent the screw 10 from being detached from the assembly member 20 and lost after the assembly member 20 is detached.
In this embodiment, the screw 10 includes a nut 11, an unthreaded section 12 and a threaded section 13 that are connected in sequence, the unthreaded section 12 and the threaded section 13 constitute a screw rod of the screw 10, the diameter of the nut 11 is greater than the diameters of the unthreaded section 12 and the threaded section 13, the outer diameter of the unthreaded section 12 is less than the outer diameter of the threaded section 13, and the thread diameter (outer diameter) of the threaded section 12 may be a standard size or a non-standard size.
The assembly part 20 is provided with a through hole 21, when the screw 10 is mounted on the assembly part 20, the non-threaded section 12 of the screw 10 is located in the through hole 21, the nut 11 of the screw 10 is located at one side of the through hole 21, the threaded section 13 of the screw 10 is located at the other side of the through hole 21, the inner diameter of the through hole 21 is greater than the outer diameter of the non-threaded section 12, and the length of the non-threaded section 12 is greater than the height of the through hole 21, so that the non-threaded section 12 can freely move in the through hole 21 along the axial direction of the screw 10, and the threaded section 13 can be fully locked with the nut 31 in the electronic device shell 30 or separated from the nut 31. The threaded section 13 has an outer diameter greater than the inner diameter of the through bore 21 so that the threaded section 13 cannot be removed from the through bore 21 and the screw 10 cannot be removed from the fitting 20.
Preferably, the inner diameter of the through hole 21 is smaller than the outer diameter of the threaded section 13 by 0.4 to 0.6mm in order to facilitate the assembly of the screw 10 and the fitting 20 by the external force. If the inner diameter of the through hole 21 is too small compared to the outer diameter of the threaded section 13, the screw 10 is not easily inserted into the through hole 21 of the fitting 20, and if the inner diameter of the through hole 21 is less than 0.3mm compared to the outer diameter of the threaded section 13, the screw 10 is easily removed from the through hole 21 of the fitting 20.
The inner diameter of the through hole 21 is 0.1-0.2 mm larger than the outer diameter of the non-threaded section 12, so that the non-threaded section 12 can freely move up and down in the through hole 21 of the assembly part 20, and the phenomenon that the non-threaded section 12 is easy to break due to too small diameter can be avoided, and the overall strength of the screw 10 is improved.
In some embodiments, as shown in fig. 1 and 2, the side of the through hole 21 adjacent to the nut 11 is provided with a chamfer 22, and the side of the through hole 21 adjacent to the threaded section 13 is provided with a right angle 23. A chamfer 22 is provided on one side of the through hole 21, the chamfer 22 forming a guide to facilitate the entry of the threaded section 13 of the screw 10 into the through hole 21 and thus the mounting of the screw 10. The chamfer 22 in the present embodiment is exemplarily a C-angle of 0.5mm, and of course, the size of the chamfer 22 may be set according to the actual use requirement, and the present embodiment is not limited. The other side of the through hole 21 is left without special treatment as a right angle 23, and the right angle 23 can catch the threaded section 13 of the screw 10 to prevent the screw 10 from being detached from the fitting 20.
In some embodiments, the side of the fitting 20 away from the nut 11 is provided with an abutting portion 24, the abutting portion 24 is provided with a through hole 241 communicating with the through hole 21, and an inner diameter of the through hole 241 is larger than an outer diameter of the threaded section 13, so that the threaded section 13 can freely move in the through hole 241.
Because the length of the non-threaded section 12 is greater than the height of the through hole 21, after the threaded section 13 of the screw 10 is locked with the nut 31 on the electronic device, in order to prevent the assembly 20 from moving up and down relative to the electronic device (or the screw 10), in this embodiment, the assembly 20 is further provided with an abutting section 24, as shown in fig. 7, before installation, the screw 10 is lifted up, so that the threaded section 13 is located in the through hole 241 of the abutting section 24, during installation, the screw 10 is rotated, so that the threaded section 13 of the screw 10 moves down and is locked with the nut 31 in the housing 30 of the electronic device, after locking, the nut 11 of the screw 10 just abuts against the top surface of the assembly 20, and the bottom surface of the abutting section 24 just abuts against the housing 30 of the electronic device, so as to prevent the assembly 20 from moving up and down relative to the electronic device.
Further, the vertical distance from one surface of the abutting part 24 far away from the through hole 21 to one surface of the through hole 21 with the right angle 23 is larger than the length of the threaded section 13; the perpendicular distance from the surface of the abutment 24 remote from the through hole 21 to the surface of the through hole 21 provided with the right angle 23 is smaller than the difference between the length of the unthreaded section 12 and the height of the through hole 21.
As shown in fig. 4, a vertical distance from a surface of the abutting portion 24 away from the through hole 21 to a surface of the through hole 21 provided with the right angle 23 is h, a length of the threaded section 13 is L, and h > L, so that it is ensured that the screw 10 has a space and can be completely withdrawn from the nut 31 in the housing 30 of the electronic device in the process of disassembling, that is, the screw 10 and the housing 30 of the electronic device can be completely separated; generally, h is 0.4-0.8 mm larger than L.
As shown in fig. 4, the difference between the length of the non-threaded section 12 and the height of the through hole 21 is H, where H > H, which ensures that the screw 10 has enough displacement space to sufficiently lock the screw 10 with the nut 31 in the electronic device housing 30 during the assembly process; generally, H is 0.2-0.4 mm larger than H.
The utility model discloses still provide an embodiment of anticreep screw assembly, including the assembly part 20 and the screw 10 that are used for preventing the screw from droing described in above-mentioned embodiment, the structure of assembly part 20 is shown in fig. 1 and 2, and the structure of screw 10 is shown in fig. 3.
The screw 10 comprises a screw cap 11, an unthreaded section 12 and a threaded section 13 which are sequentially connected, the unthreaded section 12 and the threaded section 13 form a screw rod of the screw 10, the diameter of the screw cap 11 is larger than the outer diameters of the unthreaded section 12 and the threaded section 13, and the outer diameter of the unthreaded section 12 is smaller than the outer diameter of the threaded section 13.
When the screw 10 is installed on the assembly member 20, the unthreaded section 12 of the screw 10 is located in the through hole 21 of the assembly member 20, the threaded section 13 of the screw 10 is located on the other side of the through hole 21, and the outer diameter of the threaded section 13 is larger than the inner diameter of the through hole 21, so that the threaded section 13 cannot be disengaged from the through hole 21, and further the screw 10 cannot be disengaged from the assembly member 20.
Further, as shown in fig. 3, the screw 10 further includes a handle 14, and the handle 14 is disposed on the nut 11. In this embodiment, the nut 11 of the screw 10 is partially enlarged, so that the nut 11 has enough space to add a handle 14, when the screw 10 is installed, the screw 10 can be installed in the nut 31 of the electronic device or the screw 10 can be removed from the nut 31 by rotating the handle 14, and the installation and removal of the screw 10 are facilitated without using a tool such as a screwdriver.
The handle 14 may be fixed to the nut 11 or may be rotatable relative to the nut 11. Illustratively, the handle 14 is semi-annular, one end of the handle 14 is rotatably connected with one side of the nut 11 through a rotating shaft, and the other end of the handle 14 is rotatably connected with the other side of the nut 11 through a rotating shaft; in the use state, the handle 14 is rotated above the screw cap 11 and is vertical to the top surface of the screw cap 11; in the storage state, the handle 14 is rotated to one side of the nut 11 and is parallel to the top surface of the nut 11. The handle 14 can be stored when not in use, which not only saves space, but also is more beautiful. The handle 14 is semi-circular and can be conveniently held by a user.
As shown in fig. 7, after the assembly 20 is assembled to the housing 30 of the electronic device, the handle 14 of the screw 10 is rotated to a use state, the screw 10 is smoothly mounted into the nut 31 of the housing 30 by screwing the handle 14 of the screw 10, after the lower surface of the nut 11 of the screw 10 contacts the assembly 20, the assembly 20 is firmly fixed to the housing 30 of the electronic device because the threads of the threaded section 13 are engaged with the nut 31 of the housing 30, and then the handle 14 of the screw 10 is rotated to a storage state. When the user wants to disassemble the assembly member 20, the handle 14 of the screw 10 is adjusted to the use state, and then the screw 10 is unscrewed to separate the assembly member 20 from the housing 30 of the electronic device, and the screw 10 does not fall off the assembly member 20.
The utility model provides an electronic equipment's embodiment, as shown in fig. 1 to 6, including casing 30 and the anticreep screw assembly of above-mentioned embodiment, be equipped with nut 31 in the casing 30, screw 10's screw thread section 13 and nut 31 threaded connection to fix assembly part 20 on casing 30. The nut 31 can be directly fixed in the housing 30 through a hot melting process, the assembly member 20 is fixed on the housing 30 through the screw 10, when the assembly member 20 is disassembled from the housing 30, the screw 10 cannot fall off from the assembly member 20, so as to prevent the screw 10 from losing, meanwhile, the handle 14 is arranged on the screw 10, tools such as a screwdriver and the like are not needed when the screw 10 is installed and disassembled, and the installation and the disassembly of the screw 10 are convenient.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An assembly part for preventing a screw from falling off, wherein the screw comprises a screw cap, an unthreaded section and a threaded section which are connected in sequence, and the outer diameter of the threaded section is larger than that of the unthreaded section; it is characterized in that the preparation method is characterized in that,
the assembly part is provided with a through hole, the non-threaded section is arranged in the through hole, the threaded section is positioned on one side of the through hole, the screw cap is positioned on the other side of the through hole, the inner diameter of the through hole is larger than the outer diameter of the non-threaded section and smaller than the outer diameter of the threaded section, and the length of the non-threaded section is larger than the height of the through hole.
2. A fitting for preventing the removal of screws according to claim 1,
a chamfer is arranged on one side, close to the nut, of the through hole, and a right angle is arranged on one side, close to the threaded section, of the through hole.
3. A fitting for preventing the removal of screws according to claim 2,
one side of the assembly part, which is far away from the nut, is provided with a butting part, a through hole communicated with the through hole is arranged in the butting part, and the inner diameter of the through hole is larger than the outer diameter of the threaded section.
4. A fitting for preventing the removal of screws according to claim 3,
the vertical distance from one surface of the abutting part, which is far away from the through hole, to one surface of the through hole, which is provided with the right angle, is greater than the length of the threaded section;
the vertical distance from one surface of the abutting part, which is far away from the through hole, to one surface of the through hole, which is provided with the right angle, is smaller than the difference between the length of the non-threaded section and the height of the through hole.
5. A fitting for preventing the removal of screws according to claim 4,
the vertical distance from one surface of the abutting part far away from the through hole to one surface of the through hole provided with the right angle is 0.4-0.8 mm larger than the length of the threaded section; and/or;
the difference between the length of the non-threaded section and the height of the through hole is 0.2-0.4 mm greater than the vertical distance from one surface of the abutting part far away from the through hole to one surface of the through hole provided with the right angle.
6. A fitting for preventing the removal of screws according to claim 1,
the inner diameter of the through hole is 0.1-0.2 mm larger than the outer diameter of the non-threaded section; and/or;
the inner diameter of the through hole is 0.4-0.6 mm smaller than the outer diameter of the thread section.
7. An anti-run screw assembly comprising the assembly for preventing a screw from running off of any one of claims 1 to 6 and a screw.
8. The anti-run screw assembly according to claim 7,
the screw further comprises a handle, and the handle is arranged on the screw cap.
9. The anti-run screw assembly according to claim 8,
the handle is in a semi-annular shape, one end of the handle is rotatably connected with one side of the nut through a rotating shaft, and the other end of the handle is rotatably connected with the other side of the nut through a rotating shaft;
in the using state, the handle is rotated to the position above the screw cap and is vertical to the top surface of the screw cap;
in the storage state, the handle rotates to one side of the nut and is parallel to the top surface of the nut.
10. An electronic device comprising a housing and the anti-drop screw assembly of any one of claims 7-9, wherein a nut is disposed within the housing, and wherein the threaded section of the screw is threadably engaged with the nut to secure the assembly to the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222452968.0U CN217926719U (en) | 2022-09-16 | 2022-09-16 | Assembly part for preventing screw from falling off, anti-falling screw assembly and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222452968.0U CN217926719U (en) | 2022-09-16 | 2022-09-16 | Assembly part for preventing screw from falling off, anti-falling screw assembly and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217926719U true CN217926719U (en) | 2022-11-29 |
Family
ID=84173813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222452968.0U Active CN217926719U (en) | 2022-09-16 | 2022-09-16 | Assembly part for preventing screw from falling off, anti-falling screw assembly and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217926719U (en) |
-
2022
- 2022-09-16 CN CN202222452968.0U patent/CN217926719U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217926719U (en) | Assembly part for preventing screw from falling off, anti-falling screw assembly and electronic equipment | |
| CN112171565A (en) | Hexagonal spanner | |
| CN210808898U (en) | Fishing rod seat capable of being adjusted at multiple angles | |
| CN215042663U (en) | Connecting shaft mounting structure of wiper motor | |
| CN112586896A (en) | Stainless steel cabinet body convenient to installation | |
| CN110612958B (en) | Multi-angle adjusting fishing rod seat | |
| CN217363336U (en) | Temperature controller with prevent that heating rod from unscrewing structure to joint | |
| CN210218363U (en) | Wear-resistant pipe connecting nut | |
| CN210919763U (en) | Anti-loosening bolt | |
| CN201884429U (en) | Positioning bolt at free end of screw | |
| CN217207260U (en) | Double-locking structure | |
| CN214331115U (en) | Anti-disassembly bolt | |
| CN211501054U (en) | Shaft movement prevention structure for multi-stage pump transportation process | |
| CN215109979U (en) | Adjustable bolt and bolt spanner | |
| CN217271357U (en) | Anti-drop bolt for oil | |
| CN215214294U (en) | Bolt and car | |
| CN220337247U (en) | Anti-drop nut | |
| CN214034090U (en) | Assembled green building timber | |
| CN211001868U (en) | Joint for aircraft engine with firm installation | |
| CN217122974U (en) | Correcting unit of water pump impeller processing usefulness | |
| CN219045504U (en) | Countersunk head self-drilling screw | |
| CN215444723U (en) | Nut component convenient to disassemble | |
| CN220964231U (en) | Novel U-shaped steel cable clamping device | |
| CN217381245U (en) | Combined anti-loose anti-theft bolt assembly | |
| CN219235207U (en) | Pulley bearing dismounting tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |