TWI693009B - Fastening device - Google Patents

Abstract

A mounting device includes a body component, a pivot, a limit component and a latch. The pivot includes a head, a shaft and a screw. The head and the screw are respectively connected to the two opposite sides of the shaft. The screw is screwed to the body component. The limit component contacts the head. The latch includes a handle and a hook. The handle is connected to the hook. The hook includes a first stopping part and a second stopping part. The first stopping part is connected to the second stopping part. The first stopping part includes a hole. The latch is connected to the shaft of the pivot via the hole and is rotatable with respect to the shaft. The first stopping part and the second stopping part together form a stopping slot therebetween. The latch pivots by taking the shaft as a pivot center and contacts a pin via the stopping slot.

Description

Fastening device

The invention relates to a buckling device, in particular to a buckling device which uses a stopper to prevent the rotation shaft from loosening and the latch hook is rotatably connected to the rotation shaft relative to the rotation shaft.

In computer equipment, manufacturers often install a fan in the fan bracket to cool down the parts in the computer case. In order to fix the fan bracket in the computer case, the manufacturer has a latch hook on the fan bracket. Most of the latch hooks are fixed by step screws, and the latch hooks can use the step screws as the rotating shaft. The latch hook also has a circular arc slot. During the rotation of the latch hook, the latch hook can use the circular arc slot to abut against the support member of the computer casing, and the latch hook can move relative to the support member through the circular arc slot. When the latch hook fully abuts the supporting member through the arc groove, the fan bracket can be fixed in the computer case. When the latch does not rest on the support, the fan bracket can move freely within the computer case. Since the user only needs to rotate the latch hook to install or remove the fan bracket, the fan bracket can achieve the function of hot plugging.

However, the latch hook may cause the step screw to rotate together during the rotation, and the latch hook may cause the step screw to loosen. Once the step screw is loose, even the fan bracket will also loosen inside the computer case. The blades of the fan bracket may not be able to face the parts, so that the cooling effect of the fan on the parts is reduced. If the temperature of the parts continues to rise, the parts may not function properly, which may make the computer equipment unable to function.

The present invention is to provide a buckling device, so as to solve the problem that the rotating shaft is easy to be loosened by the latch hook in the prior art.

The fastening device disclosed in an embodiment of the present invention includes a body part, a rotating shaft, a limiting part and a latch hook. The rotating shaft includes a head, a shaft portion and a threaded portion. The head part and the screw part are respectively connected to opposite sides of the shaft part. The threaded portion is locked to the body piece. The stopper rests against the head. The latch hook includes a handle and a hook portion. The handle is connected to the hook. The hook portion includes a first stop portion and a second stop portion. The first stop portion is connected to the second stop portion. The first stop portion includes a shaft hole. The latch hook is connected to the shaft portion of the rotating shaft through the shaft hole and the latch hook rotates relative to the body member. The first stop portion and the second stop portion together surround a stop groove. The latch hook rotates with the shaft as the center of rotation, and abuts against a fixed pin through the stop groove.

According to the fastening device disclosed in the above embodiment, since the rotation shaft of the fastening device is locked on the body member by the threaded portion and the rotation shaft is abutted by the limiting member, when the latch hook rotates, the rotation shaft does not loosen from the body member Off. The rotating shaft remains fixed on the body part, so the latch hook can also be kept against the fixing pin without being loosened. In this way, there will be no relative movement between the body part and the fixing pin, so the position of the body part is fixed.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principles of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

The following will describe one embodiment of the present invention. Please refer to FIG. 1 to FIG. 2 first. FIG. 1 is an exploded perspective view of a fastening device, a fixing plate and a fixing pin according to an embodiment of the invention. FIG. 2 is a perspective assembly diagram of the fastening device, the fixing plate and the fixing pin of FIG. 1.

The fastening device 10 of this embodiment is, for example, a fan bracket. The fastening device 10 includes a main body 100, a rotating shaft 200, a limiting member 300 and a latch 400. The main body 100 includes a threaded hole 110. The rotating shaft 200 includes a head portion 210, a shaft portion 220, and a threaded portion 230. The head portion 210 and the screw portion 230 are respectively connected to opposite sides of the shaft portion 220. The threaded portion 230 is locked to the threaded hole 110 of the body member 100, and the rotating shaft 200 is thus connected to the body member 100. In this embodiment and some embodiments of the present invention, the limiting member 300 is, for example, a cross-shaped columnar body, but it is not limited thereto. In other embodiments, the limiting member may be a regular polygonal column. The stopper 300 abuts the head 210 and restricts the rotation shaft 200 from moving in the direction X of the stopper 300. The latch hook 400 includes a handle 410 and a hook portion 420. The handle 410 is connected to the hook 420. The hook portion 420 includes a first stop portion 421 and a second stop portion 422. The first stop portion 421 is connected to the second stop portion 422. In this embodiment and some embodiments of the present invention, the hook portion 420 is connected to the handle 410 by the first stop portion 421, but it is not limited thereto. In other embodiments, the hook portion may be connected to the handle by the second stop portion. In this embodiment, the first stop portion 421 includes a shaft hole 4211. The latch hook 400 is connected to the shaft portion 220 of the rotating shaft 200 through the shaft hole 4211 so that the rotating shaft 200 is located in the shaft hole 4211 of the latch hook 400. The user can use the handle 410 to rotate the latch 400, and the latch 400 rotates relative to the body 100 through the rotating shaft 200. The first stop portion 421 and the second stop portion 422 together surround a stop groove 423. The latch 400 rotates with the shaft portion 220 as the center of rotation, and abuts a fixing pin 22 on a fixing plate 20 through the stop groove 423, where the fixing plate 20 is, for example, a computer casing. After the latch hook 400 abuts on the fixing pin 22, there will be no relative movement between the fastening device 10 and the fixing pin 22, and the fastening device 10 can be fixed on the fixing plate 20.

Next, please refer to FIG. 3, which is a schematic side sectional view of the fastening device, the fixing plate, and the fixing pin of FIG. 2. In this embodiment and some embodiments of the present invention, since the head 210 is abutted by the limiting member 300, the movement of the rotating shaft 200 in the direction of the limiting member 300 is restricted. In this way, the rotating shaft 200 locked to the threaded hole 110 of the body member 100 will not be detached from the body member 100, thereby ensuring that the connection relationship between the body member 100, the rotating shaft 200, and the latch hook 400 is maintained, but not as limit. Please refer to FIG. 4 to FIG. 5. FIG. 4 is a schematic side sectional view of the fastening device, the fixing plate and the fixing pin according to the next embodiment of the invention. FIG. 5 is a partially enlarged exploded schematic view of the fastening device of FIG. 4. The following only describes the differences between the next embodiment of the present invention and some of the foregoing embodiments, and the remaining similarities will be omitted. In this embodiment and some embodiments of the present invention, the limiting member 300 is, for example, a cylinder. The head 210 includes a first assembling portion 211, and the limiting member 300 includes a second assembling portion 310. The first assembling part 211 and the second assembling part 310 have an assembling structure matching each other. The first assembly portion 211 is, for example, a hexagonal recess, and the second assembly portion 310 is, for example, a hexagonal bump, but not limited to this. In other embodiments, the first assembly part may be a hexagonal bump, an elongated groove or a quadrilateral cavity, and the second assembly part may be a hexagonal hole, an elongated convex block or a quadrilateral projection, as long as the first The first assembly part and the second assembly part can be assembled in cooperation with each other. In this embodiment and some embodiments of the present invention, the limiting member 300 is assembled on the first assembling portion 211 through the second assembling portion 310 to restrict the rotation shaft 200 from withdrawing from the main body 100. In this way, both the axial displacement and the rotational displacement of the rotating shaft 200 are limited by the limiting member 300, and the rotating shaft 200 can be more firmly fixed on the body member 100 without being loosened from the body member 100.

Then refer to Figure 3. In this embodiment and some embodiments of the present invention, in the radial direction of the rotating shaft 200, the area of the shaft portion 220 is larger than the area of the screw portion 230. In this way, the side of the shaft portion 220 close to the threaded portion 230 can be abutted on the body member 100, so that the rotation shaft 200 is not easily displaced in the axial direction relative to the body member 100, but it is not limited thereto. In other embodiments, the area of the shaft portion in the radial direction may also be equal to or smaller than the area of the threaded portion, and it may be difficult for the rotating shaft to be relatively displaced relative to the body member by, for example, abutting the abutment member.

Then please refer to FIG. 3 and FIG. 6. 6 is a front view of the latch hook and the fixing pin of the fastening device of FIG. 1. In this embodiment and some embodiments of the present invention, the latch 400 further includes a locking portion 430. The locking portion 430 is connected to the hook portion 420, and the locking portion 430 is located in the shaft hole 4211 of the hook portion 420. The locking portion 430 includes a locking hole 431. The diameter width D1 of the shaft portion 220 is equal to the diameter width D2 of the locking hole 431 of the locking portion 430. The latch hook 400 can rotate relative to the shaft portion 220 through the locking portion 430, but not limited thereto. In other embodiments, the diameter of the shaft portion may be smaller than the diameter of the locking portion, and the bearing is installed between the locking portion and the shaft portion, as long as the user can easily rotate the latch through the handle.

In this embodiment and some embodiments of the invention, the area of the head 210 is larger than the area of the shaft 220 in the radial direction of the rotating shaft 200. The head 210 abuts against the part of the locking portion 430. In this way, in the axial direction of the rotating shaft 200, the displacement of the locking portion 430 toward the head 210 is restricted by the head 210. The latch 400 is not easy to generate relative displacement with respect to the main body 100 in a direction away from the screw portion 230, but it is not limited thereto. In other embodiments, the area of the head may also be equal to or smaller than the area of the shaft portion, and the latch hook may be restricted to move away from the threaded portion relative to the body member by, for example, abutting the abutment member .

In this embodiment and some embodiments of the present invention, in the axial direction of the rotating shaft 200, the latch hook 400 abuts the body member 100. In this way, the displacement of the latch hook 400 toward the threaded portion 230 is restricted by the body member 100. The latch 400 is not easily displaced relative to the main body 100 in the direction of the threaded portion 230, but it is not limited thereto. In other embodiments, the latch hook may also abut against, for example, a top member, as long as the latch hook can be restricted to move away from the head relative to the body member.

Then refer to Figure 6. In this example and some embodiments of the present invention, the stop groove 423 of the latch hook 400 is in the form of one end closed. That is, the first stop portion 421 includes a first end 4212. The second stop portion 422 includes a second end 4221. The first end 4212 of the first stop portion 421 is connected to the second end 4221 of the second stop portion 422. In this way, when the user installs the stop groove 423 of the latch hook 400 to the fixing pin 22 through the handle 410, the first end 4212 of the first stop portion 421 and the second end 4221 of the second stop portion 422 can Limiting the angle at which the user rotates the handle 410 is too large to ensure that the fastening device 10 (shown in FIG. 1) is installed in an appropriate position.

In this embodiment and some embodiments of the invention, the first stop portion 421 includes a first starting end 4213. The second stop portion 422 includes a second start end 4222. The distance D3 from the first start end 4213 of the first stop portion 421 to the second start end 4222 of the second stop portion 422 is greater than the diameter width D4 of the fixing pin 22. In this way, the fixing pin 22 is easier to slide between the first start end 4213 of the first stop portion 421 and the second start end 4222 of the second stop portion 422, and the fixing pin 22 can pass through the first stop portion 421 Between the first start end 4213 and the second start end 4222 of the second stop portion 422 to enter the first end 4212 of the first stop portion 421 and the second end 4221 of the second stop portion 422, but not limited thereto . In other embodiments, the distance from the first start end of the first stop portion to the second start end of the second stop portion may also be equal to the diameter width of the fixing pin, and the fixing pin may reduce friction by, for example, lubricating oil , As long as the fixing pin can smoothly slide between the first start end of the first stop portion and the second start end of the second stop portion.

In this embodiment and some embodiments of the invention, the stop groove 423 is an arc groove. When the user rotates the latch hook 400 through the handle 410, the latch hook 400 can slide against the fixing pin 22 through the stop groove 423. Since the stop groove 423 is a circular arc groove, the latch hook 400 can be more firmly disposed on the fixing pin 22 through the curvature of the stop groove 423, but it is not limited to this. In other embodiments, the stop groove may also be a straight groove or a curved groove, as long as the latch hook can be firmly installed on the fixing pin through the stop groove.

In this embodiment and some embodiments of the present invention, an engagement slot S is provided between the first end 4212 of the first stop portion 421 and the second end 4221 of the second stop portion 422. That is, the first stop portion 421 includes a first stop surface 4214, and the first stop surface 4214 faces the second stop portion 422. The second stop portion 422 includes a second stop surface 4223a, and the second stop surface 4223a faces the first stop portion 421. The second stop surface 4223a includes a bump P. In this embodiment and some embodiments of the present invention, the convex point P of the second stop surface 4223a is, for example, a sharp point, and the absolute value of the curvature radius of the convex point P is significantly smaller than the absolute value of the curvature radius of the surrounding plane, But not limited to this. In other embodiments, the convex point on the second stop surface may also be an arc convex point, as long as the absolute value of the radius of curvature of the convex point is significantly smaller than the absolute value of the radius of curvature of the surrounding plane. In this embodiment and some embodiments of the present invention, the engaging groove S is used to receive the fixing pin 22 through the bump P, so that the fixing pin 22 is not easily detached from the engaging groove S, but it is not limited thereto. Please refer to FIG. 7, which is a front view of a latch hook and a fixing pin of a fastening device according to another embodiment of the invention. The following only describes the differences between another embodiment of the present invention and some of the foregoing embodiments, and the remaining similarities will be omitted. In this embodiment and some embodiments of the present invention, the second stop portion 422 includes a second stop surface 4223b, and the second stop surface 4223b includes an arc slope A, that is, the second stop surface 4223b It is an arc-shaped continuous plane. The latch 400 is provided on the fixing pin 22 so as to pass through the slope of the arc-shaped slope A of the stop groove 423 without being separated from the fixing pin 22.

Then please refer to FIG. 1 to FIG. 2. In this embodiment and some embodiments of the present invention, the fastening device 10 further includes a screw 500 and a side plate 600, and the limiting member 300 is connected to the side plate 600, but not limited thereto. In other embodiments, the limiting member may also be a single element, as long as it is relatively fixed to the fixing plate. In this embodiment and some embodiments of the invention, the screw 500 is locked to the main body 100 and the side plate 600. In this way, the body 100 does not move relative to the side plate 600, but it is not limited thereto. In other embodiments, the fastening device can also be fixed on the side plate by means of buckle or sticking. In this embodiment and some embodiments of the present invention, the side plate 600 includes a first convex portion 610, and the latch 400 further includes a second convex portion 440. The first convex portion 610 faces and is close to the second convex portion 440. When the fixing pin 22 is located at the first end 4212 of the first stop portion 421 and the second end 3222 of the second stop portion 422, the first convex portion 610 abuts the second convex portion 440. In this way, the first convex portion 610 abuts against the second convex portion 440 can prevent the user from turning the handle 410 excessively, ensuring that the user does not damage the structure of the latch hook 400 or the fixing pin 22 due to excessive force, but this is not used limit. In other embodiments, other feedback methods, such as sound reminders or visual reminders, may also be used to inform the user that the rotation limit of the latch hook has been reached, so as to prevent the user from excessively rotating the latch hook.

According to the fastening device of the above embodiment, since the head is abutted by the limiting member, the movement of the rotating shaft in the direction of the limiting member is restricted. In this way, the rotating shaft locked on the body member will not detach from the body member, thereby ensuring that the connection relationship between the body member, the rotating shaft and the latch hook is maintained.

The head may further include a first assembly part, and the position-limiting member may further include a second assembly part. The limiting member is assembled on the first assembling portion through the second assembling portion, thereby restricting the rotation shaft from withdrawing from the main body member. In this way, both the axial displacement and the rotational displacement of the rotating shaft are limited by the limiting member, and the rotating shaft can be more firmly fixed on the body member without being loosened from the body member.

In the radial direction of the rotating shaft, the area of the shaft portion can also be larger than the area of the screw portion. In this way, the side of the shaft portion close to the threaded portion can bear against the body member, so that the rotation shaft is less likely to be displaced in the axial direction relative to the body member.

The latch hook further includes a locking portion connected to the hook portion and located in the shaft hole of the hook portion. Since the diameter width of the shaft portion is equal to the diameter width of the locking portion, the latch hook can rotate relative to the shaft portion through the locking portion.

In the radial direction of the rotating shaft, the area of the head may also be larger than the area of the shaft. The head rests against part of the locking part. In this way, the displacement of the locking portion toward the head is restricted by the head. The latch hook is not easy to produce relative displacement with respect to the body member in a direction away from the threaded portion.

In the axial direction of the rotating shaft, the latch hook can also bear against the body piece. In this way, the displacement of the latch hook to the threaded portion is restricted by the body member. The latch hook is not easily displaced relative to the body member in the direction of the threaded portion.

The first end of the first stop can also be connected to the second end of the second stop. That is, the stop groove of the latch hook may be in the form of one end closed. In this way, the stop groove can limit the angle at which the user turns the handle to be too large, and ensure that the fastening device is installed in an appropriate position.

The distance from the first start end of the first stop portion to the second start end of the second stop portion may also be greater than the diameter width of the fixing pin. In this way, the fixing pin is easier to slide between the first start end of the first stop portion and the second start end of the second stop portion, and the fixing pin can pass through the first start end and the second stop of the first stop portion Between the second start end of the stop portion, the first end of the first stop portion and the second end of the second stop portion are entered.

The stop groove can also be a circular arc groove, so that the latch hook can be more firmly set on the fixing pin through the arc of the stop groove.

An engagement groove may also be provided between the first end of the first stop portion and the second end of the second stop portion, that is, the second stop surface includes a convex point. The engaging groove is used for accommodating the fixing pin through the convex point, so that the fixing pin is not easy to be separated from the engaging groove.

The fastening device further includes a screw and a side plate, and the screw is locked on the main body and the side plate. In this way, the main body will not be displaced relative to the side plate. The side plate further includes a first convex portion, and the latch hook further includes a second convex portion. When the user excessively rotates the handle of the latch hook, the first convex portion abuts the second convex portion, ensuring that the user does not damage the structure of the latch hook or the fixing pin due to excessive force.

Although the present invention is disclosed as above with the foregoing embodiments, it is not intended to limit the present invention. Any person familiar with similar arts can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of patent protection for inventions shall be subject to the scope defined in the patent application scope attached to this specification.

10: Fastening device 20: fixed plate 22: fixed pin 100: body parts 110: threaded hole 200: shaft 210: head 211: First Assembly Department 220: Shaft 230: threaded part 300: limit piece 310: Second Assembly Department 400: latch hook 410: handle 420: Hook 421: First stop 4211: Shaft hole 4212: the first end 4213: The first beginning 4214: first stop surface 422: Second stop 4221: second end 4222: the second beginning 4223a, 4223b: second stop surface 423: Stop groove 430: Locking part 431: Locking hole 440: Second convex part 500: screw 600: side panel 610: The first convex D1, D2, D4: diameter width X: direction D3: Distance S: snap groove P: bump A: Curved slope

FIG. 1 is an exploded perspective view of a fastening device, a fixing plate and a fixing pin according to an embodiment of the invention. FIG. 2 is a perspective assembly diagram of the fastening device, the fixing plate and the fixing pin of FIG. 1. 3 is a schematic side sectional view of the fastening device, the fixing plate and the fixing pin of FIG. 2. 4 is a schematic side cross-sectional view of a fastening device, a fixing plate and a fixing pin according to a second embodiment of the invention. FIG. 5 is a partially enlarged exploded schematic view of the fastening device of FIG. 4. 6 is a front view of the latch hook and the fixing pin of the fastening device of FIG. 1. 7 is a front view of the latch hook and the fixing pin of the fastening device according to another embodiment of the invention.

100: body parts

110: threaded hole

200: shaft

210: head

220: Shaft

230: threaded part

300: limit piece

400: latch hook

4211: Shaft hole

430: Locking part

431: Locking hole

D1, D2: diameter width

X: direction

Claims (10)

A buckling device includes: a body part; a rotating shaft including a head, a shaft part and a threaded part, the head and the threaded part are respectively connected to opposite sides of the shaft part, and the threaded part is locked to The body part; a limiting part, the limiting part abuts the head; and a latch hook, including a handle and a hook part, the handle is connected to the hook part, the hook part includes a first stop part and A second stop portion, the first stop portion is connected to the second stop portion, the first stop portion includes a shaft hole, the latch hook is connected to the shaft portion of the rotating shaft through the shaft hole, and the latch The hook rotates relative to the body part, the first stop portion and the second stop portion together surround a stop groove, and the latch hook rotates around the shaft portion as a rotation center, and abuts through the stop groove On a fixed pin. The fastening device as described in item 1 of the patent application, wherein the head includes a first assembly part, the limiter includes a second assembly part, and the first assembly part and the second assembly part cooperate with each other The assembly structure. The snap-fit device as described in item 1 of the patent application scope, wherein the area of the shaft portion is larger than the area of the screw portion in the radial direction of the rotating shaft. The buckling device as described in item 1 of the patent application scope, wherein the latch hook further includes a locking portion, the locking portion is connected to the hook portion, the locking portion is located in the shaft hole of the hook portion, the The diameter width of the shaft portion is equal to the diameter width of the locking portion. The snap-fit device as described in item 4 of the patent application scope, wherein the area of the head in the radial direction of the rotating shaft is larger than the area of the shaft, and the head abuts against the part of the locking portion. The fastening device as described in item 1 of the patent application scope, wherein the latch hook abuts the body member. The fastening device as described in item 1 of the patent application, wherein the first stop portion includes a first end, the second stop portion includes a second end, and the first end of the first stop portion The second end connected to the second stop portion. The fastening device as described in item 7 of the patent application scope further includes a screw and a side plate, the screw is locked to the body member and the side plate, the side plate includes a first convex portion, and the latch hook further includes a first Two convex parts, the first convex part faces and is close to the second convex part, when the fixing pin is located at the first end of the first stop part and the second end of the second stop part, the The first convex portion abuts the second convex portion. The fastening device as described in item 1 of the patent application scope, wherein the first stop portion includes a first start end, the second stop portion includes a second start end, and the first start end of the first stop portion The distance from the second start end of the second stopper is greater than the diameter width of the fixing pin. The buckling device as described in item 1 of the patent application, wherein the first stop portion includes a first stop surface, the first stop surface faces the second stop portion, and the second stop portion includes A second stop surface, the second stop surface faces the first stop portion, and the second stop surface includes a convex point.

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