TWM451580U - Fixing device - Google Patents

Description

Fixtures

This creation relates to a fixture, in particular a fixture that increases the compression stroke of the spring.

Please refer to FIG. 1 , which shows a conventional fixing device for fixing a heat sink. As shown in Fig. 1, the conventional fixing device 1a includes a spring 10a, a screw 20a, and an O-ring 40a. The conventional fixing device 1a is configured to enable the spring 10a to be received in the receiving space 911 of the fixing post 91. A portion of the screw 22a of the screw 20a is provided with a groove (not shown), so that the O-ring 40a is in the screw. The sleeve 22a is sleeved under the screw 22a and can be fixed to the screw 22a by interference with the groove. Once the O-ring 40a is connected and fixed to the screw 22a, the O-ring 40a can be interfered with the bottom end of the fixing post 91 to prevent the spring 10a and the screw 20a from being detached from the accommodating space 911 due to severe shaking.

Although the spring 10a can be effectively prevented from falling by the above method, since the O-ring 40a is disposed under the fixing post 91, the length of the portion of the screw 22a that originally protrudes from the bottom end of the fixing post 91 (i.e., the portion indicated by L1) becomes shorter. The connecting belt also affects the downward compression distance of the spring 10a. For an electronic device having a limited thickness space, such as an ultra-thin notebook computer or a tablet computer, such a fixing device 1a will not be used.

Therefore, it is necessary to invent a new fixture to solve the aforementioned problems.

The main purpose of this creation is to provide a spring screw fixing device that can increase the compression stroke distance of the spring.

In order to achieve the above object, the fixing device of the present invention is used for fixing a heat dissipating device, and the heat dissipating device comprises a plurality of fixing cylinders, each of which is a hollow cylinder to form an accommodation space inside each of the fixing cylinders. The fixing cylinder has a top end and a bottom end, wherein the top end is provided with a top opening, and the bottom opening is provided with a bottom opening. The fixture includes a spring, a screw and a fixed gasket ring.

The spring is disposed in the accommodating space. The screw includes a screw head and a screw; the screw head has a main body and an interference ring, and the interference ring is disposed around the main body; the screw system is connected with the screw head, and the screw is located in the accommodating space through the top opening and the spring, and the screw is at least One part protrudes from the bottom opening. The fixed gasket ring is sleeved on the main body of the screw head and located on the interference ring, and the fixed gasket ring is connected to the top end of the fixing cylinder to seal the top opening to prevent the spring and the screw from coming off the receiving space.

According to an embodiment of the present invention, the outer edge of the fixed spacer ring of the present invention is provided with a plurality of sharp corners, and the angles of the plurality of sharp corners are all acute angles, so that the fixed gasket ring passes through the plurality of sharp corners to be fixed with the fixed cylinder Top riveted connection.

According to one embodiment of the present invention, the length of the screw projection bottom opening of the present invention is substantially 6.4 millimeters (mm).

Because the creation of this creation is novel, it can provide industrial use, and it has improved efficiency, so it applies for a new patent according to law.

The above and other objects, features and advantages of the present invention will become more apparent and understood.

Please refer to FIG. 2 and FIG. 3 for a schematic structural view of the fixing device of the present invention.

As shown in FIG. 2, in one embodiment of the present invention, the fixture 1 of the present invention is used to fix a heat sink 90 to a circuit board (not shown). The heat sink 90 includes a plurality of fixed cylinders. 91. Each of the fixing cylinders 91 is a hollow cylinder, so that a receiving space 911 is formed inside each of the fixing cylinders 91. The plurality of fixing cylinders 91 each have a top end 912 and a bottom end 913, wherein the top end 912 is provided with a top opening 914, and the bottom end 913 is provided with a bottom opening 915; the top opening 914 is corresponding to the bottom opening 915, and the top opening 914 The sectional plane area is greater than the sectional plane area of the bottom opening 915. In one embodiment of the present invention, the fixture 1 of the present invention includes a spring 10, a screw 20, and a fixed gasket ring 30.

As shown in FIGS. 2 and 3, the spring 10 is disposed in the accommodation space 911.

In one embodiment of the present invention, the screw 20 includes a screw head 21 and a screw 22. The screw head 21 has a main body 211 and an interference ring 212. The interference ring 212 is disposed around the main body 211. The screw 22 is coupled to the screw head 21, which is received in the accommodating space 911 through the top opening 914 of the fixed cylinder 91 and the spring 10, and at least a portion of the screw 22 protrudes from the bottom opening 915 of the fixed cylinder 91. In one embodiment of the present invention, the length of at least a portion of the bottom opening 915 of the screw 22 protruding from the fixed cylinder 91 (ie, L2 shown in FIG. 3) is substantially 6.4 millimeters (mm), but the present invention is not limited thereto.

In one embodiment of the present invention, the fixed shim ring 30 is sleeved to the body 211 of the screw head 21 and above the interference ring 212. The outer edge of the fixed spacer ring 30 is provided with a plurality of sharp corners 31, and the angle of each sharp corner 31 is an acute angle. The plurality of sharp corners 31 are used to facilitate the fixing of the gasket ring 30 with the fixing cylinder 91 The connection is such that the fixed gasket ring 30 can be coupled to the top end 912 of the fixed cylinder 91 and seal the top opening 914 to prevent the spring 10 and the screw 22 from disengaging from the receiving space 911.

As shown in FIG. 2 and FIG. 3, after the fixing device 1 of the present invention is combined with the fixed cylinder 91, the interference between the spacer ring 30 and the interference ring 212 can be prevented to prevent the spring 10 and the screw 22 from opening from the top. The 914 is separated from the accommodation space 911. Further, since the sectional plane area of the spring 10 and the screw head 21 is larger than the area of the bottom opening 915, the possibility that the spring 10 and the screw 22 are separated from the accommodating space 911 by the bottom opening 915 is also prevented. Since the fixing device 1 of the present invention achieves the fixing effect by using the fixed spacer ring 30, and the fixed spacer ring 30 is disposed at the top end 912 of the fixed cylinder 91, the fixing of the spacer ring 30 does not occur after the assembly is completed. It affects the length of the portion of the screw 22 that protrudes from the bottom opening 915 (i.e., the portion shown by L2), and thus the stroke distance at which the spring is compressed downward is not affected thereby, effectively improving the lack of prior art.

In summary, this creation, regardless of its purpose, means and efficacy, is showing its characteristics that are different from the well-known techniques. You are kindly requested to review the examination and express the patent as soon as possible. It is to be noted that the various embodiments described above are merely illustrative for ease of explanation, and the scope of the claims is intended to be limited by the scope of the claims.

1, 1a‧‧‧ fixtures

10, 10a‧‧ ‧ spring

20, 20a‧‧‧ screws

21‧‧‧ screw head

211‧‧‧ Subject

212‧‧‧Interference ring

22, 22a‧‧‧ screw

30‧‧‧Fixed gasket ring

31‧‧‧ sharp corner

40a‧‧‧O-ring

90‧‧‧heating device

91‧‧‧ fixed cylinder

911‧‧‧ accommodation space

912‧‧‧Top

913‧‧‧ bottom

914‧‧‧ top opening

915‧‧‧ bottom opening

Figure 1 is a side cross-sectional view of a prior art fixture.

Figure 2 is an exploded view of the fixture of the present invention.

Figure 3 is a side cross-sectional view of the fixture of the present invention.

1‧‧‧Fixed devices

10‧‧‧ Spring

21‧‧‧ screw head

211‧‧‧ Subject

212‧‧‧Interference ring

22‧‧‧ screw

30‧‧‧Fixed gasket ring

91‧‧‧ fixed cylinder

911‧‧‧ accommodation space

912‧‧‧Top

913‧‧‧ bottom

Claims (4)

A fixing device for fixing a heat dissipating device, the heat dissipating device comprising a plurality of fixing cylinders, each of the fixing cylinders being a hollow cylinder for forming a receiving space in each of the fixing cylinders, the plurality of fixing cylinders each having a top end and a bottom end, the top end is provided with a top opening, and the bottom end is provided with a bottom opening, the fixing device comprises: a spring disposed in the receiving space; a screw comprising: a screw head having a body and an interference a ring, the interference ring is disposed around the body; and a screw is coupled to the screw head, the screw is located in the receiving space through the top opening and the spring, and at least a portion of the screw protrudes from the bottom opening; And a fixed gasket ring is sleeved on the main body and located on the interference ring, and the fixed gasket ring is connected to the top end of the fixing cylinder to seal the top opening to prevent the spring from being separated from the receiving space . The fixing device of claim 1, wherein the outer edge of the fixed gasket ring is provided with a plurality of sharp corners, so that the fixed gasket ring passes through the plurality of sharp corners to rive the top end of the fixed cylinder connection. The fixing device of claim 2, wherein the angle of the plurality of sharp corners is an acute angle. The fixing device of claim 3, wherein the length of the screw protruding from the bottom opening is substantially 6.4 millimeters (mm).