Anti-loosening fastening assembly and electronic device

Abstract

This disclosure provides an anti-loosening fastening assembly and electronic device, relating to the field of component assembly. The anti-loosening fastening assembly includes: a positioning member, a first housing, and a second housing. The positioning member includes a nut and a column located below the nut. The column has a first threaded portion and a second threaded portion spaced apart from top to bottom. The first housing has a first positioning hole, at least a portion of the inner wall of which protrudes towards its own axis to form an annular boss. The inner wall of the annular boss is constructed with a first internal thread. The second housing is located below the first housing and has a second positioning hole. The inner wall of the second positioning hole, away from the first housing, is constructed with a second internal thread. In a first state, the positioning member moves relative to the second housing along the first internal thread via the first threaded portion. In a second state, the second threaded portion extends into the second housing and engages with the second internal thread for tightening. After tightening, a preset gap distance remains between the nut and the annular boss. This ensures that the positioning member will not detach from the first housing.

Description

Technical Field

[0001] This disclosure relates to the field of parts assembly, and more particularly to an anti-loosening fastening assembly and electronic equipment. Background Technology

[0002] With the continuous advancement of computer technology, laptops have become increasingly popular due to their compact size. When assembling the upper and lower keyboard shells of laptops, it's crucial to avoid complete detachment of the shells. Current technologies often employ pre-installed gaskets at the mounting points between the upper and lower shells, followed by screwing them in. However, existing production lines cannot simultaneously install both gaskets and screws at the same workstation, leading to reduced assembly efficiency.

[0003] There is an urgent need for a structure that facilitates the assembly of the upper and lower shells at this mounting position, and ensures their relative positioning without them detaching from each other. Summary of the Invention

[0004] This disclosure provides an anti-loosening fastening component and electronic device to at least solve the above-mentioned technical problems existing in the prior art.

[0005] According to a first aspect of this disclosure, an anti-loosening fastening assembly is provided, comprising:

[0006] A positioning component, comprising a nut and a column located below the nut, wherein the column is provided with a first threaded portion and a second threaded portion at intervals from top to bottom;

[0007] A first housing has a first positioning hole, at least a portion of the inner wall of the first positioning hole protrudes toward its own axis to form an annular boss, and the inner sidewall of the annular boss is constructed as a first internal thread;

[0008] A second housing is located below the first housing. The second housing has a second positioning hole, and the inner wall of the second positioning hole is configured as a second internal thread away from the first housing.

[0009] In the first state, the positioning member moves relative to the second housing along the first internal thread via the first threaded portion;

[0010] In the second state, the second threaded part extends into the second housing and engages with the second internal thread for screwing. After screwing in place, a preset gap distance is left between the nut and the annular boss.

[0011] In one embodiment, the first positioning hole has a first groove above the annular boss and a second groove below the annular boss. The opening direction of the first groove is away from the second housing, and the opening direction of the second groove is close to the second housing. The first groove is used to accommodate the nut, and the second groove is used for the first threaded portion to pass through in its own axial direction.

[0012] In one embodiment, the second positioning hole is constructed as a stepped hole along its own axial direction. The stepped hole includes a third groove, a fourth groove, and a first through hole that are sequentially arranged from top to bottom. The second internal thread is formed on the inner wall of the first through hole. The opening directions of the third groove and the fourth groove are both oriented towards the direction close to the first housing.

[0013] A contact plane is formed between the third groove and the fourth groove, and the contact plane is used to limit the farthest distance that the first threaded portion extends into the second housing.

[0014] In one embodiment, the column further has a first smooth rod portion and a second smooth rod portion, the first smooth rod portion being located between the nut and the first threaded portion, and the second smooth rod portion being located between the first threaded portion and the second threaded portion;

[0015] The diameter of the first threaded portion is larger than the diameter of the first smooth rod portion, the diameter of the second threaded portion is larger than the diameter of the second smooth rod portion, and the diameter of the first threaded portion is larger than the diameter of the second threaded portion.

[0016] In one possible implementation, the diameter of the first threaded portion is larger than the maximum inner diameter of the second groove.

[0017] In one embodiment, the inner diameter of the second groove and the third groove are the same, and the inner diameter of the second groove and the third groove is larger than the outer diameter of the first threaded portion.

[0018] In one possible embodiment, the second groove and the third groove together define an adjustment space for the first threaded portion to move or retract;

[0019] The height dimension of the adjustment space along the axial direction of the positioning member is greater than the height dimension of the second threaded portion.

[0020] In one possible implementation, when the second threaded portion is screwed in the opposite direction to the second internal thread to the disengaged state, a preset safety distance is maintained between the first threaded portion and the bottom surface of the second groove.

[0021] In one embodiment, the height dimension of the first guide rod portion is greater than the height dimension of the first threaded portion along the axial direction of the positioning member.

[0022] According to a second aspect of this disclosure, an electronic device is provided, including the anti-loosening fastening assembly as described above.

[0023] The disclosed anti-loosening fastening assembly and electronic device employs a positioning member that can pass through the first housing and extend into the second housing. The first threaded portion of the positioning member can be threadedly engaged with the annular boss of the first housing, rather than the entire structure of the positioning member's cylindrical body being threadedly engaged with the first and / or second housings. The second threaded portion of the positioning member can be threadedly engaged with the inner wall of the second housing. By adopting the above scheme, threaded engagement between the positioning member and both the first and second housings is achieved, where only a portion of the structure is threaded.

[0024] Furthermore, the second threaded part extends into the second housing and engages with the second internal thread for tightening. After tightening, a preset gap distance remains between the nut and the annular boss. This preset gap distance can be understood as the distance between the positioning component and the first housing when the positioning component is tightened through the first and second housings. This safety distance ensures that the positioning component can be adapted to applications with first and second housings of different machining precision. Additionally, when disassembling a laptop casing, positioning structures in other locations are generally removed first, followed by the first and second housings where the positioning component is located. With this preset gap distance, when the positioning component is loosened, there will be no reaction force between the positioning component and the first housing that would cause the positioning component to detach from the first housing. That is, even if the positioning component is loosened, it will not detach from the first housing, thus avoiding the problem of the positioning component being lost or detached from the first housing during laptop casing disassembly.

[0025] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0026] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0027] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0028] Figure 1 This diagram shows a front view of the positioning element in an anti-loosening fastening assembly according to an embodiment of the present disclosure.

[0029] Figure 2 A schematic diagram of the cross-sectional structure of the anti-loosening fastening assembly along the axial section of the positioning member according to an embodiment of the present disclosure is shown.

[0030] Explanation of the labels in the diagram:

[0031] 10-Positioning component; 11-Nut; 12-Pillar; 121-First threaded part; 122-Second threaded part; 123-First smooth rod part; 124-Second smooth rod part; 13-Gap distance;

[0032] 20 - First housing; 21 - First positioning hole; 211 - Annular boss; 212 - First internal thread; 213 - First groove; 214 - Second groove;

[0033] 30 - Second housing; 31 - Second positioning hole; 32 - Abutting surface; 311 - Second internal thread; 312 - Third groove; 313 - Fourth groove; 314 - First through hole. Detailed Implementation

[0034] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0035] With the widespread use of electronic devices, their production efficiency has become a major concern. Many factors influence this efficiency. Electronic devices can include desktop computers, laptops, tablets, and mobile phones.

[0036] For ease of explanation, this disclosure uses a laptop computer as an example to illustrate the solution. Laptop manufacturing typically involves the assembly or disassembly of various components or structures. Low assembly efficiency directly impacts overall laptop production efficiency. Furthermore, when assembling the laptop keyboard's upper and lower shell structures, it's necessary to avoid complete separation of the upper and lower shells. Related technologies employ pre-installing a gasket structure at the mounting position between the upper and lower shells, followed by screwing it into place. However, based on existing production lines, it's impossible to simultaneously install the gasket structure and screws at the same workstation, leading to reduced assembly efficiency.

[0037] For example, a laptop computer generally includes an external structure and an internal structure. The external structure generally includes a casing, a display screen, a keyboard, a touchpad, a power switch, and interfaces. The internal structure generally includes a motherboard, a processor, memory, a hard drive, a graphics card, a sound card, a network card, etc. The casing generally includes an upper shell and a lower shell. The upper shell includes a top shell structure that engages with the display screen, and the lower shell includes an upper shell structure and a lower shell structure that are mounted to the keyboard. The upper shell structure can be understood as the first shell in this embodiment, and the lower shell structure can be understood as the second shell in this embodiment.

[0038] The anti-loosening fastening components and electronic devices provided in this disclosure can improve the assembly efficiency of the first housing and the second housing.

[0039] Specifically, refer to Figure 1 and Figure 2 This disclosure provides an anti-loosening fastening assembly, including a positioning member 10, a first housing 20, and a second housing 30. The positioning member 10 includes a nut 11 and a column 12 located below the nut 11. The column 12 has a first threaded portion 121 and a second threaded portion 122 spaced apart from top to bottom. The first housing 20 has a first positioning hole 21, at least a portion of the inner wall of which protrudes towards its own axis to form an annular boss 211. The inner wall of the annular boss 211 is constructed with a first internal thread 212. The second housing 30 is located below the first housing 20 and has a second positioning hole 31. The inner wall of the second positioning hole 31, away from the first housing 20, is constructed with a second internal thread 311.

[0040] Referring to the structure above, the anti-loosening fastening assembly of this embodiment can have the following two states: In the first state, the positioning member 10 moves relative to the second housing 30 along the first internal thread 212 via the first threaded portion 121. In the second state, the second threaded portion 122 extends into the second housing 30 and engages with the second internal thread 311 for screwing. After screwing in place, a preset gap distance 13 is left between the nut 11 and the annular boss 211.

[0041] The anti-loosening fastening component of this disclosure embodiment can be applied to one of the positioning positions between the first housing 20 and the second housing 30, and may also include other positioning positions between them.

[0042] For example, the first threaded portion 121 is adapted to the first internal thread 212.

[0043] For example, the second threaded portion 122 is adapted to the second internal thread 311.

[0044] For example, the first positioning hole 21 and the second positioning hole 31 are coaxially arranged.

[0045] The present invention does not limit the preset gap distance 13, as long as it is compatible with the fitting installation between the first housing 20, the second housing 30 and the positioning member 10, and does not generate a reaction force relative to the positioning member 10 during the loosening process, so as not to cause the positioning member 10 to fall out of the first housing 20.

[0046] The positioning element 10 can pass through the first housing 20 and extend into the second housing 30. The first threaded portion 121 of the positioning element 10 can be threadedly engaged with the annular boss 211 of the first housing 20, rather than the entire structure of the positioning element 10 column 12 being threadedly engaged with the first housing 20 and / or the second housing 30. The second threaded portion 122 of the positioning element 10 can be threadedly engaged with the inner wall of the second housing 30. Using this scheme, threaded engagement can be achieved where only a portion of the positioning element 10 is threaded with both the first housing 20 and the second housing 30.

[0047] In addition, the second threaded part 122 extends into the second housing 30 and engages with the second internal thread 311 for screwing. After screwing, a preset gap distance 13 is left between the nut 11 and the annular boss 211. This preset gap distance 13 can be understood as the preset gap distance 13 left between the positioning member 10 and the first housing 20 when the positioning member 10 passes through the first housing 20 and the second housing 30 is in a tightened state. This safety distance can ensure that the positioning member 10 is compatible with the applications of the first housing 20 and the second housing 30 with different machining precision. In addition, when disassembling a laptop casing, other positioning structures are usually removed first, and the first casing 20 and the second casing 30 where the positioning member 10 is located are removed last. With the preset gap distance 13, when the positioning member 10 is loosened, no reaction force will be generated between the positioning member 10 and the first casing 20, which would cause the positioning member 10 to fall out of the first casing 20. That is, even if the positioning member 10 is loosened, the positioning member 10 will not fall out of the first casing 20, which can avoid the problem of the positioning member 10 being lost or falling out of the first casing 20 when disassembling the laptop casing.

[0048] In some embodiments, further reference is made to Figure 2 The first positioning hole 21 has a first groove 213 above the annular boss 211, and a second groove 214 below the annular boss 211. The opening direction of the first groove 213 is away from the second housing 30, and the opening direction of the second groove 214 is close to the second housing 30. The first groove 213 is used to accommodate the nut 11, and the second groove 214 is used for the first threaded portion 121 to pass through in its axial direction. The first groove 213 allows the nut 11 to be inserted and accommodated within it, while the second groove 214 allows the column 12 to pass through the first housing 20 and provides axial space for the column 12 to move.

[0049] This application does not limit the shape or structure of the first groove 213 and the second groove 214, as long as they can be matched to the application of this solution.

[0050] For example, the first groove 213 and the second groove 214 may adopt the same type of shape, or the first groove 213 and the second groove 214 may adopt different types of shapes.

[0051] For example, the first groove 213 and the second groove 214 may be of regular shape, or the first groove 213 and the second groove 214 may be of irregular shape.

[0052] In some embodiments, further reference is made to Figure 2 The second positioning hole 31 is constructed as a stepped hole along its own axial direction. The stepped hole includes a third groove 312, a fourth groove 313, and a first through hole 314, which are sequentially arranged from top to bottom. A second internal thread 311 is formed on the inner wall of the first through hole 314. The opening directions of the third groove 312 and the fourth groove 313 are both oriented towards the direction close to the first housing 20. An abutting plane 32 is formed between the third groove 312 and the fourth groove 313. The abutting plane 32 is used to limit the farthest distance that the first threaded portion 121 extends into the second housing 30. In summary, along the direction in which the positioning member 10 extends into the second housing 30, the abutting plane 32 can prevent the positioning member 10 from continuously extending into the second housing 30, thereby limiting the farthest distance that the positioning member 10 extends into the second housing 30.

[0053] This application does not limit the shape or structure of the third groove 312 and the fourth groove 313, as long as they can be matched with the application of this solution.

[0054] For example, the third groove 312 and the fourth groove 313 may adopt the same type of shape, or the third groove 312 and the fourth groove 313 may adopt different types of shapes.

[0055] For example, the third groove 312 and the fourth groove 313 may be of regular shape, or the third groove 312 and the fourth groove 313 may be of irregular shape.

[0056] Based on the fact that an abutting plane 32 is formed between the third groove 312 and the fourth groove 313 in this solution, it can be seen that the opening of the fourth groove 313 is smaller than the opening of the third groove 312, so that an abutting plane 32 can be formed for the positioning member 10 to continuously extend into the second housing 30.

[0057] In some embodiments, the column 12 further includes a first smooth rod portion 123 and a second smooth rod portion 124. The first smooth rod portion 123 is located between the nut 11 and the first threaded portion 121, and the second smooth rod portion 124 is located between the first threaded portion 121 and the second threaded portion 122. The diameter of the first threaded portion 121 is larger than the diameter of the first smooth rod portion 123, the diameter of the second threaded portion 122 is larger than the diameter of the second smooth rod portion 124, and the diameter of the first threaded portion 121 is larger than the diameter of the second threaded portion 122.

[0058] By employing the positioning member 10, which sequentially comprises a nut 11, a first smooth rod portion 123, a first threaded portion 121, a second smooth rod portion 124, and a second threaded portion 122, the first threaded portion 121 and the second threaded portion 122 can be separated, allowing the first threaded portion 121 to mate with the first internal thread 212 and the second threaded portion 122 to mate with the second internal thread 311. This allows the positioning member 10 to preferentially extend into the first housing 20, and in a configuration where the first smooth rod portion 123 and the second smooth rod portion 124 are positioned close to the first threaded portion 121, the first threaded portion 121 will not dislodge from the first housing 20.

[0059] In some embodiments, further reference is made to Figure 2 The diameter of the first threaded portion 121 is larger than the maximum inner diameter of the second groove 214. Figure 2 It is understood that the second groove 214 includes two inner diameter dimensions, one of which is the inner contour boundary dimension, and the other is the maximum inner diameter dimension through which the positioning member 10 passes. Since the first threaded portion 121 is constructed as a rotating thread structure, the positioning member 10 will not retract into the first groove 213 via the second groove 214 when there is no reverse screwing action on the positioning member 10. This prevents the positioning member 10 from coming out of the first housing 20.

[0060] In some embodiments, further reference is made to Figure 2 The second groove 214 and the third groove 312 have the same inner diameter, and the inner diameter of the second groove 214 and the third groove 312 is larger than the outer diameter of the first threaded portion 121. This allows the first threaded portion 121 of the positioning member 10 to be accommodated between the first housing 20 and the second housing 30.

[0061] In some embodiments, further reference is made to Figure 2 The second groove 214 and the third groove 312 together define an adjustment space for the movement or retraction of the first threaded portion 121. Furthermore, the height dimension of the adjustment space along the axial direction of the positioning member 10 is greater than the height dimension of the second threaded portion 122. This adjustment space arrangement further ensures that the positioning member 10 will not dislodge from the first housing 20.

[0062] In some embodiments, further reference is made to Figure 2 When the second threaded portion 122 is screwed in the opposite direction to the second internal thread 311 until it is disengaged, a preset safety distance is maintained between the first threaded portion 121 and the bottom surface of the second groove 214. In this case, based on the actual scenario of laptop disassembly, even if the positioning screws at other positioning positions have been removed, the positioning member 10 of this embodiment will not disengage from the first housing 20 at the location of the first positioning hole 21, thus preventing the loss of the positioning member 10 due to disassembly.

[0063] In some embodiments, further reference is made to Figure 2 Along the axial direction of the positioning member 10, the height dimension of the first smooth rod portion 123 is greater than the height dimension of the first threaded portion 121. This further ensures that the positioning member 10 will not come out of the first housing 20.

[0064] The anti-loosening fastening assembly of the present disclosure can improve the production efficiency of laptop casing installation and also prevent the positioning part 10 from coming off the first casing 20 during disassembly.

[0065] This disclosure also provides an electronic device including the above-described anti-loosening fastening component, which can achieve all the effects of the above-described anti-loosening component, and will not be described in detail here.

[0066] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0068] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A tamper-resistant fastening assembly, characterized by, include: A positioning component, comprising a nut and a column located below the nut, wherein the column is provided with a first threaded portion and a second threaded portion at intervals from top to bottom; A first housing has a first positioning hole, at least a portion of the inner wall of the first positioning hole protruding toward its own axis to form an annular boss, the inner sidewall of the annular boss being constructed with a first internal thread; a keyboard is mounted on the first housing. A second housing is located below the first housing. The second housing has a second positioning hole, and the inner wall of the second positioning hole is configured as a second internal thread away from the first housing. In the first state, the positioning member moves relative to the second housing along the first internal thread via the first threaded portion; In the second state, the second threaded part extends into the second housing and engages with the second internal thread for screwing. After screwing in place, a preset gap distance is left between the nut and the annular boss. The second positioning hole is constructed as a stepped hole along its own axial direction. The stepped hole includes a third groove, a fourth groove, and a first through hole that are sequentially arranged from top to bottom. The second internal thread is formed on the inner wall of the first through hole. The opening directions of the third groove and the fourth groove are both facing towards the direction close to the first housing. A contact plane is formed between the third groove and the fourth groove, and the contact plane is used to limit the farthest distance that the first threaded portion extends into the second housing; The column also has a first smooth rod portion and a second smooth rod portion, wherein the first smooth rod portion is located between the nut and the first threaded portion, and the second smooth rod portion is located between the first threaded portion and the second threaded portion; The diameter of the first threaded portion is larger than the diameter of the first smooth rod portion, the diameter of the second threaded portion is larger than the diameter of the second smooth rod portion, and the diameter of the first threaded portion is larger than the diameter of the second threaded portion; along the axial direction of the positioning member, the height of the first smooth rod portion is larger than the height of the first threaded portion, thereby ensuring that the first threaded portion will not come out of the first housing.

2. The anti-loosening fastening assembly according to claim 1, characterized in that, The first positioning hole has a first groove above the annular boss and a second groove below the annular boss. The opening direction of the first groove is away from the second housing, and the opening direction of the second groove is close to the second housing. The first groove is used to accommodate the nut, and the second groove is used for the first threaded portion to pass through in its own axial direction.

3. The anti-loosening fastening assembly according to claim 2, characterized in that, The inner diameter dimensions of the second groove include: the inner boundary dimension and the maximum inner diameter dimension; The diameter of the first threaded portion is larger than the maximum inner diameter of the second groove.

4. The anti-loosening fastening assembly according to claim 2, characterized in that, The second groove and the third groove have the same inner diameter, and the inner diameter of the second groove and the third groove is larger than the outer diameter of the first threaded portion.

5. The anti-loosening fastening assembly according to claim 4, characterized in that, The second groove and the third groove together define an adjustment space for the movement or retraction of the first threaded portion; The height dimension of the adjustment space along the axial direction of the positioning member is greater than the height dimension of the second threaded portion.

6. The anti-loosening fastening assembly according to claim 4, characterized in that, When the second threaded part is screwed in the opposite direction to the second internal thread until it is disengaged, a preset safety distance is maintained between the first threaded part and the bottom surface of the second groove.

7. An electronic device, characterized in that, Includes the anti-loosening fastening component as described in any one of claims 1-6.

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