TWI887701B - Nut structure and locking structure of casing assembly - Google Patents

Abstract

A nut structure and a locking structure of casing assembly are provided. The nut structure has a nut body having a screw hole, a first end-surface and a second end-surface paralleled and arranged opposite to each other. The screw hole is arranged from the first end-surface toward the second end-surface and forming a stopping surface at a bottom thereof. An internal thread is arranged on an inner wall of the screw hole. The stopping surface is perpendicular to a forming direction of the screw hole and located between the internal thread and the second end-surface. The nut structure is therefore stopping a bolt locked into the screw hole by the stopping surface to control a locking depth of the bolt, and avoiding the nut deformed, moved or the thread breaking, and avoiding a casing deformed or the nut separated from the casing when the nut structure buried in the casing.

Description

Nut structure and locking structure of housing assembly

The present invention relates to a nut, in particular to a nut structure having a stop surface to control the bolt locking depth, which can be embedded in a plastic shell and can prevent the plastic shell from deforming or separating from the plastic shell when the bolt is locked.

The combination of nuts and bolts is widely used in various fields. The main method is to penetrate the screw hole of the nut through the screw rod of the bolt, and screw the external thread on the screw rod and the internal thread in the screw hole together, so that the nut can move longitudinally relative to the bolt or the bolt can move longitudinally relative to the nut. However, since the general screw hole completely penetrates the nut, when the bolt is screwed with the nut, if the two are continuously screwed in, the thread of the external thread or the internal thread will break and become unusable, especially when screwing plastic bolts and plastic nuts.

In addition, in electronic device components, in order to facilitate assembly and disassembly for repair, maintenance or replacement of parts, most of the shells are designed to be two-piece for assembly, and the assembly methods are mainly divided into two types: snap-on and locking. In order to achieve lightweight and reduce weight and cost, two-piece shells are mostly made of plastic molding. Therefore, when locking assembly is adopted, the metal nut is embedded in the groove of the plastic shell by embedding injection, hot melting or metal die-casting, and matched with metal bolts to ensure stability and durability. When the metal bolt and the metal nut are locked so that the bolt head of the metal bolt contacts the plastic housing, if the metal bolt is continuously tightened inward, the metal nut will be forced to disengage from the groove upward, or the plastic housing will be deformed by creep. Therefore, the known solution is mostly to add a metal bushing to disperse the stress generated during locking. However, the use of a metal bushing will not only increase the production cost and assembly process, but also as components such as electronic devices gradually become thinner and lighter, it is often impossible to set an additional metal bushing in a limited space.

In view of this, the inventor has focused on the above shortcomings of the existing technology and has conducted in-depth research and applied theoretical knowledge to try his best to solve the above problems, which has become the goal of the inventor's improvement.

The main purpose of the nut structure of the present invention is to enable the nut structure to stop the end of the bolt locked into the screw hole through the stop surface to control the locking depth of the bolt, thereby preventing the bolt from continuing to be screwed in and causing the nut to deform, shift under force or break the thread.

The main purpose of the locking structure of the housing assembly of the present invention is to prevent the nut structure embedded in the first housing from deforming the first housing and the second housing or causing the nut structure to separate from the receiving groove of the first housing when the bolt is locked.

The present invention provides a nut structure, including a nut body, the nut body having a screw hole and a first end face and a second end face that are parallel to each other and arranged oppositely, the screw hole is arranged from the first end face toward the second end face, a stop surface is formed at the bottom of the screw hole, an inner thread is arranged on the inner wall of the screw hole, and the stop surface is located between the inner thread and the second end face and is perpendicular to the setting direction of the screw hole.

In one embodiment of the present invention, the nut body has a through hole, which is arranged from the second end surface toward the first end surface and connected to the screw hole.

In one embodiment of the present invention, the through hole and the screw hole are coaxially arranged.

In one embodiment of the present invention, the diameter of the through hole is smaller than the diameter of the screw hole.

In one embodiment of the present invention, a groove is provided on the outer wall of the nut body.

The present invention provides a locking structure of a housing assembly, comprising a first housing, a nut structure, a second housing and a bolt. The first housing has a receiving groove. The nut structure comprises a nut body. The nut body has a screw hole and a first end face and a second end face which are parallel to each other and arranged opposite to each other. The screw hole is arranged from the first end face toward the second end face. A stopper surface is formed at the bottom of the screw hole. An inner thread is provided on the inner wall of the screw hole. The stopper surface is located between the inner thread and the second end face and is perpendicular to the screw hole. The screw hole is arranged in a direction such that the nut structure is closely embedded in the receiving groove. The second housing is arranged corresponding to the first housing. The second housing has a through hole corresponding to the screw hole. The bolt passes through the through hole and can be detachably locked to the nut structure. The bolt includes a column and a bolt head. The bolt head has an abutment surface. The column extends vertically from the abutment surface. The outer wall at the end of the column is formed with an outer thread that can be screwed with the inner thread. When the bolt is locked to the nut structure, the abutment surface abuts against the second housing, and the column abuts against the stop surface.

In one embodiment of the present invention, the nut structure is embedded in the receiving groove of the first shell by embedding injection, hot melting or metal die-casting.

In one embodiment of the present invention, the sum of the depth of the through hole and the depth of the screw hole is greater than or equal to the length of the column.

In one embodiment of the present invention, the second housing has a groove, and the through hole is located at the bottom of the groove so that the bolt head can be accommodated in the groove.

In one embodiment of the present invention, a groove is provided on the outer wall of the nut body, and a strip is formed on the inner wall of the receiving groove, and the strip is tightly embedded in the groove.

In summary, the nut structure of the present invention forms a stop surface in the screw hole, and the stop surface is located between the inner thread and the second end surface and perpendicular to the setting direction of the screw hole, so that when the bolt is locked in the screw hole of the nut, the stop surface can stop the end surface of the bolt to control the locking depth of the bolt, thereby preventing the bolt from continuing to be screwed in and causing deformation of the nut, displacement due to force or collapse of the thread.

The locking structure of the housing assembly of the present invention forms a stop surface in the screw hole, and the stop surface is located between the inner thread and the second end surface and perpendicular to the setting direction of the screw hole, so that when the bolt is locked in the screw hole of the nut, the end surface of the bolt can be stopped by the stop surface, so as to avoid excessive tightening and causing deformation of the first housing and the second housing, or the nut structure to separate from the receiving groove of the first housing.

100: Nut structure

101: Nut body

110: screw hole

111: Stop surface

112: Internal thread

120: First end face

130: Second end face

140: Groove

150: Perforation

200: First shell

210, 501: accommodating tank

211: Welt

220: Card slot

300: Second shell

310:Through hole

320: Groove

400: Bolts

410: Column

411: External thread

420: Bolt

421: Butt surface

500: Connector

502:Fixing hole

A: Installation interface

B: Hanging rope

C: Hanging objects

Figure 1 is a three-dimensional appearance diagram of the nut structure of the present invention.

Figure 2 is a cross-sectional view of the nut structure of the present invention.

Figure 3 is a three-dimensional exploded view of the locking structure of the housing assembly of the present invention.

Figure 4 is a partial enlargement of Figure 3.

Figure 5 is a diagram showing the locking structure of the housing assembly of the present invention in use (I).

Figure 6 is a diagram showing the locking structure of the housing assembly of the present invention in use (Part 2).

Figure 7 is a three-dimensional external view of the locking structure of the housing assembly of the present invention.

Figure 8 is a schematic diagram of the application of the nut structure of the present invention.

In the description of the present invention, it should be understood that the terms "front side", "rear side", "left side", "right side", "front end", "rear end", "end", "longitudinal", "lateral", "vertical", "top", "bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the attached drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limiting condition of the present invention.

As used herein, terms such as "first", "second", "third", "fourth", and "fifth" describe various elements, components, regions, layers, and/or parts, which should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or part from another. Unless the context clearly indicates otherwise, the terms such as "first", "second", "third", "fourth", and "fifth" used herein do not imply a sequence or order.

The detailed description and technical contents of the present invention will be described below with accompanying drawings. However, the attached drawings are for illustrative purposes only and are not used to limit the present invention.

The present invention provides a nut structure 100 for being embedded in a plastic shell (such as the first shell 200 described below) and being locked by a bolt 400. Of course, the nut structure 100 of the present invention can be embedded in different materials by different methods, such as embedded injection, hot melting or metal die-casting, which will not be described in detail here. Please refer to Figures 1 and 2, the nut structure 100 of the present invention includes a nut body 101.

In the present embodiment, the nut body 101 is a cylindrical metal part, but the present invention is not limited thereto. The outer diameter of the nut body 101 is a fixed value, that is, the nut body 101 is a columnar body with only a single outer diameter. The nut body 101 has a screw hole 110 and a first end face 120 and a second end face 130 that are parallel to each other and arranged opposite to each other. Specifically, the first end face 120 and the second end face 130 are respectively located at two ends of the nut body 101, and the screw hole 110 is arranged to extend from the first end face 120 toward the second end face 130 into the interior of the nut body 101. In addition, in order to increase the bonding strength between the nut body 101 and the plastic shell when it is embedded in the plastic shell, a groove 140 surrounding the internal thread 112 described later can be provided on the outer wall of the nut body 101, so that when the nut body 101 is embedded in the plastic shell by injection molding or hot melting, the plastic shell can closely cover the outer wall of the nut body 101 and the groove 140, thereby playing a role of stopping and limiting to prevent separation.

A stop surface 111 is formed at the bottom of the screw hole 110. The nut body 101 is provided with an internal thread 112 surrounded by a groove 140 on the inner wall of the screw hole 110. The stop surface 111 is located between the internal thread 112 and the second end surface 130, and is perpendicular to the setting direction of the screw hole 110. Specifically, the internal thread 112 in this embodiment is only provided on a part of the inner wall of the screw hole 110, that is, the internal thread 112 is formed inward from the first end surface 120 but does not extend to the stop surface 111, but in other embodiments, the internal thread 112 can also be provided on the entire inner wall of the screw hole 110.

Thus, by forming a stop surface 111 at the bottom of the screw hole 110, and the stop surface 111 is located between the internal thread 112 and the second end surface 130 and perpendicular to the setting direction of the screw hole 110, when the bolt 400 is locked in the screw hole 110 of the nut, the stop surface 111 can stop the end surface of the bolt 400 to control the locking depth of the bolt 400, thereby preventing the bolt 400 from continuing to be screwed in and causing the nut structure 100 and the plastic shell to be deformed, displaced by force, or the thread to be broken. When the nut structure 100 is embedded in the plastic shell, it can also prevent the plastic shell from being deformed or the nut structure 100 from being separated from the plastic shell due to over-tightening. Therefore, the present invention only needs to adjust the depth of the screw hole 110 (i.e. the distance from the first end surface 120 to the stop surface 111) according to the bolt 400 to be used, so as to effectively control the locking depth of the bolt 400.

To further explain, the nut body 101 also has a through hole 150. The through hole 150 is set from the second end face 130 to the first end face 120 and extends into the interior of the nut body 101, thereby connecting to the screw hole 110. More specifically, the through hole 150 and the screw hole 110 are coaxially arranged, and the diameter of the through hole 150 is smaller than the diameter of the screw hole 110. This can facilitate the discharge of metal debris and waste materials during the processing of the screw hole 110, the stop surface 111 and the internal thread 112. It should be noted that since the through hole 150 is set to facilitate the discharge of metal debris generated during mechanical processing, the setting of the through hole 150 is not a necessary feature of the nut structure 100 of the present invention.

Please refer to Figures 3 to 7. The present invention also provides a locking structure for a housing assembly, including a first housing 200, at least one nut structure 100 as described above, a second housing 300, and at least one bolt 400.

In this embodiment, the first housing 200 and the second housing 300 are both integrally formed by plastic injection molding, but the present invention is not limited thereto. The first housing 200 has at least one receiving groove 210. The nut structure 100 is embedded in the receiving groove 210 of the first housing 200 by embedding injection or hot melting, thereby preventing the nut structure 100 from being separated from the receiving groove 210 of the first housing 200. Specifically, when the nut structure 100 is embedded in the receiving groove 210 by embedding injection or hot melting, a strip 211 is formed on the inner wall of the receiving groove 210 corresponding to the groove 140, so that the strip 211 is embedded in the groove 140 to achieve a positioning effect of close fitting and fixing.

The second housing 300 is configured to correspond to the first housing 200. In the present embodiment, the second housing 300 is covered in a slot 220 of the first housing 200, but the present invention is not limited thereto. For example, the second housing 300 and the first housing 200 may also be of the same size, depending on the design requirements. The second housing 300 has at least one through hole 310 corresponding to the size and position of the screw hole 110, so that the screw hole 110 can be connected to the outside of the first housing 200 and the second housing 300 through the through hole 310. In addition, the second housing 300 has a groove 320. The through hole 310 is located at the bottom of the groove 320, so that the bolt head 420 of the bolt 400 can be accommodated in the groove 320 when the bolt 400 is locked without protruding from the surface of the second housing 300. It should be noted that the provision of the groove 320 is not necessary, for example, the abutment surface 421 of the bolt 400 described later may also directly abut against the surface of the second housing 300.

In this embodiment, the nut structure 100 and the bolt 400 are metal parts. The bolt 400 is penetrated by the through hole 310 and can be detachably locked to the nut structure 100. Specifically, the bolt 400 includes a column 410 and a bolt head 420. The bolt head 420 in this embodiment is in the shape of a pancake, but the present invention is not limited thereto. For example, the bolt head 420 can also be a hexagonal body or an octagonal body... etc. The bottom of the bolt head 420 has a contact surface 421. The column 410 is cylindrical and extends vertically from the center of the contact surface 421. In this embodiment, the outer wall at the end of the column 410 is formed with an outer thread 411 that can be threaded with the inner thread 112 of the nut structure 100, but the present invention is not limited thereto. For example, the outer thread 411 can also be formed on the entire outer wall of the column 410.

Thus, when the bolt 400 is locked in the nut structure 100, the abutting surface 421 of the bolt head 420 abuts against the second housing 300, and at the same time, the end surface of the column 410 abuts against the stop surface 111. Therefore, even if the bolt 400 continues to be rotated, the end surface of the column 410 is stopped by the stop surface 111, so that the bolt 400 can only slip and idle and cannot continue to be screwed in, thereby preventing the bolt 400 from being over-tightened and causing the first housing 200 and the second housing 300 to be deformed, or causing the nut structure 100 to be forced upward and separated from the receiving groove 210 of the first housing 200.

It should be noted that the number of the receiving groove 210, the through hole 310, the nut structure 100 and the bolt 400 in this embodiment is one, but the present invention is not limited thereto. For example, the number of the receiving groove 210, the through hole 310, the nut structure 100 and the bolt 400 can also be more than two, depending on the locking requirements of the design.

To further explain, in this embodiment, the sum of the depth of the through hole 310 and the depth of the screw hole 110 is slightly greater than or equal to the length of the column 410. Thus, when the bolt 400 is locked to the nut structure 100 and the abutting surface 421 of the bolt head 420 abuts against the second housing 300, it can be ensured that the end surface of the column 410 abuts against the stop surface 111 at the same time. Specifically, if the sum of the depth of the through hole 310 and the depth of the screw hole 110 is equal to the length of the column 410, when the abutting surface 421 of the bolt head 420 abuts against the second housing 300, the end surface of the column 410 will just abut against the stop surface 111. If the sum of the depth of the through hole 310 and the depth of the screw hole 110 is slightly greater than the length of the column 410, the first housing 200 and the second housing 300 can be clamped by the pressing force when the bolt 400 and the nut structure 100 are locked, so that the two are slightly deformed and the abutting surface 421 of the bolt head 420 and the end surface of the column 410 are simultaneously abutted against the second housing 300 and the stop surface 111.

Please refer to FIG. 8, which is a schematic diagram of one of the application methods of the nut structure 100 of the present invention. It is mainly used in combination with a connecting seat 500 installed on a mounting interface A. The details are as follows: The connecting seat 500 shown in FIG. 8 is a rectangular body, but the present invention is not limited to this. The connecting seat 500 can be a plastic material or a metal material, and the nut structure 100 of the present invention is embedded in the connecting seat 500 by embedding injection, hot melting or metal die-casting, but the material of the connecting seat 500 of the present invention and the embedding method of the nut structure 100 are not limited to the upper cover.

Specifically, the connecting seat 500 has at least one receiving groove 501 which is the same as the aforementioned first housing 200, that is, the receiving groove 501 of the connecting seat 500 also has a strip (not numbered in the figure) which is tightly embedded in the groove 140, thereby playing a role in positioning and fixing to prevent the nut structure 100 from being separated from the receiving groove 501 of the connecting seat 500. It should be noted that the number of receiving grooves 501 and nut structures 100 can be determined according to needs, and the present invention does not impose any restrictions on this.

Furthermore, the connector 500 shown in FIG. 8 has a plurality of fixing holes 502 for a plurality of screws to pass through, thereby fixing the connector 500 on the mounting interface A, but the fixing method of the connector and the mounting interface A is not limited to this. The mounting interface A can be a wall, a ceiling, a partition or sheet metal, etc. However, it should be noted that the above is only used as an example to facilitate the understanding of those with ordinary knowledge in this field, and is not a limitation of the present invention.

Thus, by fixing the connecting seat 500 on the mounting interface A and locking the corresponding bolt 400 into the screw hole 110 of the nut structure 100, so that the end face of the bolt 400 abuts against the stop surface 111 of the nut structure 100, the bolt 400 can be stably locked to the nut structure 100 for use as a hook, without causing deformation of the nut structure 100 or the connecting seat 500, and the nut structure 100 will not be separated from the receiving groove 501 due to force. As shown in FIG8, the bolt 400 used as a hook can be hung by hanging a rope B to hang a hanging object C connected to the rope B.

The nut structure 100 of the present invention forms a stop surface 111 in the screw hole 110, and the stop surface 111 is located between the inner thread 112 and the second end surface 130 and is perpendicular to the setting direction of the screw hole 110, so that when the bolt 400 is locked in the screw hole 110 of the nut, the end surface of the bolt 400 can be stopped by the stop surface 111 to control the locking depth of the bolt 400, thereby preventing the bolt 400 from continuing to be screwed in and causing the nut structure 100 and the plastic shell to be deformed or displaced by force, or even the thread is broken; and when the nut structure 100 is embedded in the plastic shell, it can also prevent the plastic shell from being deformed or the nut structure 100 from being separated from the plastic shell due to over-tightening.

The locking structure of the housing assembly of the present invention forms a stop surface 111 in the screw hole 110, and the stop surface 111 is located between the internal thread 112 and the second end surface 130 and is perpendicular to the setting direction of the screw hole 110, so that when the bolt 400 is locked in the screw hole 110 of the nut, the stop surface 111 can stop the end surface of the bolt 400, thereby avoiding excessive tightening to cause deformation of the first housing 200 and the second housing 300, or the nut structure 100 is separated from the receiving groove 210 of the first housing 200.

In summary, the present invention has industrial applicability, novelty and advancement. The present invention may have other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may evolve various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the patent applied for the present invention.

100: Nut structure

101: Nut body

110: screw hole

111: Stop surface

112: Internal thread

120: First end face

130: Second end face

140: Groove

150: Perforation

Claims (9)

A nut structure is used to be closely embedded in a plastic shell. The nut structure includes a nut body, which has a first end face and a second end face that are parallel to each other and arranged opposite to each other. The nut structure is characterized in that: the outer diameter of the nut body is a fixed value, the nut body is columnar and has a screw hole, the screw hole is arranged from the first end face toward the second end face, a stop surface is formed at the bottom of the screw hole, the inner wall of the screw hole is provided with an internal thread, the stop surface is located between the internal thread and the second end face and is perpendicular to the setting direction of the screw hole, the outer wall of the nut body is provided with a groove surrounding the internal thread, and the plastic shell closely covers the outer wall of the nut body and the groove. A nut structure as described in claim 1, wherein the nut body has a through hole, which is arranged from the second end face toward the first end face and connected to the screw hole. A nut structure as described in claim 2, wherein the through hole and the screw hole are coaxially arranged. A nut structure as described in claim 2, wherein the diameter of the through hole is smaller than the diameter of the screw hole. A locking structure of a housing assembly, comprising: A first housing, having a receiving groove; A nut structure as described in any one of claims 1 to 4, which is closely embedded in the receiving groove; A second housing, which is arranged corresponding to the first housing, and the second housing has a through hole corresponding to the screw hole; and A bolt, which passes through the through hole and can be detachably locked to the nut structure, the bolt comprising a column and a bolt head, the bolt head having an abutment surface, the column extending vertically from the abutment surface, and the outer wall of the end of the column forming an outer thread capable of being threaded with the inner thread; Wherein when the bolt is locked to the nut structure, the abutment surface abuts against the second housing, and the column abuts against the stop surface. The locking structure of the shell assembly as described in claim 5, wherein the nut structure is tightly embedded in the receiving groove of the first shell by embedded injection, hot melting or metal die-casting. A locking structure for a shell assembly as described in claim 5, wherein the sum of the depth of the through hole and the depth of the screw hole is greater than or equal to the length of the column. A locking structure of a shell assembly as described in claim 5, wherein the second shell has a groove, and the through hole is located at the bottom of the groove so that the bolt head can be accommodated in the groove. As described in claim 5, the locking structure of the shell assembly, wherein the inner wall of the accommodating groove is formed with a molding, and the molding is tightly embedded in the groove.

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