TWI721337B - Assembly device - Google Patents

Abstract

An assembly device includes a screw, an elastic component and a first assembly. The screw includes a head portion, a support portion and an assembly portion. The head portion and the assembly portion are respectively connected to two opposite sides of the support portion. The support portion passes through the elastic component. The elastic component includes a first side and a second side opposite to each other. The first side contacts the head portion. The first assembly includes a hole. The support portion passes through the hole. The head portion and the assembly portion are respectively located at two opposite sides of the first assembly. The second side contacts the first assembly. A maximum outer diameter of the assembly portion in a radial direction is larger than a minimum inner diameter of the hole.

Description

Assembly device

The invention relates to an assembling device, especially an assembling device with screws.

Today's server systems often use captive screws to assemble various modules. Since the floating screws are directly riveted to the module, the loss of floating screws can be avoided. Furthermore, when assembling the module, the assembler does not need to spend extra time to match the specifications and dimensions of the screws and screw holes. In addition, floating screws often use softer threads to tightly lock into the female threads, and are matched with springs to strengthen the locking torque of the floating screws.

However, the unit price of floating screws is more expensive than ordinary screws. Moreover, once the floating screw is riveted, it is found that the screw and the screw hole are skewed and poorly aligned, or the specification and size of the screw are found to be wrong after the floating screw is riveted, it is necessary to remove the riveting part of the floating screw from the module . However, the disassembled floating screws can no longer be re-assembled and used, so the floating screws can only be scrapped. In addition, because the thread of the floating screw is relatively soft, if the screw is not properly aligned with the screw hole and the screw is reluctantly locked in, it is easy to cause the thread to break. Finally, the spring stroke of the floating screw is also limited by the length of the housing, and it is prone to the problem of insufficient spring restoring force.

The present invention provides an assembling device to solve the problems of high unit price of floating screws in the prior art. Once the floating screws are fixed to the assembly, they cannot be disassembled and used repeatedly, they are easy to collapse and the spring restoring force is insufficient.

The assembly device disclosed in an embodiment of the present invention includes a screw, an elastic member, and a first assembly member. The screw includes a head, a bearing section and an assembly section. The head and the assembly section are connected to opposite sides of the supporting section. The supporting section penetrates the elastic piece. The elastic member includes a first side and a second side opposite to each other. The first side rests against the head. The first assembly includes an opening. The supporting section runs through the opening. The head and the assembly section are located on opposite sides of the first assembly. The second side abuts against the first assembly. A maximum outer diameter of the assembly section in a radial direction is greater than a minimum inner diameter of the opening.

The assembly device disclosed in another embodiment of the present invention includes a screw, an elastic member, a first assembly member, and a second assembly member. The screw includes a head, a bearing section and an assembly section. The head and the assembly section are connected to opposite sides of the supporting section. The supporting section penetrates the elastic piece. The elastic member includes a first side and a second side opposite to each other. The first side rests against the head. The first assembly includes an opening. The supporting section runs through the opening. The head and the assembly section are located on opposite sides of the first assembly. The second side abuts against the first assembly. The second assembly includes an assembly hole. The assembly section is detachably assembled to the second assembly part through the assembly hole. A maximum outer diameter of the assembly section in a radial direction is greater than a minimum inner diameter of the opening. The head exerts a force on the elastic part, so that the elastic part is compressed toward the first assembly part.

According to the assembling device disclosed in the above embodiment, the maximum outer diameter of the assembling section in the radial direction is greater than the minimum inner diameter of the opening, and the supporting section penetrates the opening of the first assembly so that the head and the assembling section are located in the first assembly. Opposite sides of the piece. In this way, the screw can only move relative to the first assembly within the range of the supporting section through the opening, which can achieve the technical feature of the prior art that the floating screw is not easily lost from the first assembly in a cheaper manner.

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

An embodiment of the present invention will be described below. First, please refer to FIG. 1 to FIG. 2. Fig. 1 is a side cross-sectional view of an assembling device according to an embodiment of the present invention. Fig. 2 is an exploded side sectional view of the assembling device of Fig. 1;

The assembling device 10 of this embodiment is, for example, a server module with its own screws. The assembling device 10 includes a screw 100, an elastic member 200 and a first assembly member 300. The screw 100 includes a head 110, a supporting section 120 and an assembly section 130. The head 110 and the assembling section 130 are connected to opposite sides of the supporting section 120. The elastic member 200 is, for example, a compression spring and is sleeved on the screw 100 so that the supporting section 120 penetrates the elastic member 200. The elastic member 200 includes a first side 210 and a second side 220 opposite to each other. The first side 210 abuts the head 110. The first assembly 300 includes an opening 310. The supporting section 120 penetrates through the opening 310 so that the head 110 and the assembly section 130 are located on opposite sides of the first assembly 300. The second side 220 abuts against the first assembly 300. In this way, the first side 210 and the second side 220 of the elastic member 200 are respectively restricted by the head 110 and the first assembly member 300 in a long axis direction L of the screw 100, and the elastic member 200 is located between the head 110 and The range between the first assembly 300. In this embodiment and some embodiments of the present invention, a portion of the head 110 exceeds the opening 310. In this embodiment, the head 110 completely exceeds the opening 310, and a maximum outer diameter D1 of the assembly section 130 in a radial direction R is greater than a minimum inner diameter D2 of the opening 310. In this way, the displacement of the screw 100 in the long axis direction L is restricted by the head 110 and the assembly section 130, and only the supporting section 120 can move freely in the long axis direction L through the opening 310.

Please refer to Figure 1 to Figure 3. Fig. 3 is a schematic side sectional view of the assembling section of the assembling device of Fig. 1 being screwed into the opening of the first assembling part. In this embodiment and some embodiments of the present invention, the assembly section 130 includes a male thread 131. The first assembly 300 further includes a first female thread 320. The first female thread 320 is located in the opening 310 of the first assembly 300. The male thread 131 and the first female thread 320 are both a universal metric screw thread (ISO metric screw thread), and one of the male threads 131 has a nominal outer diameter (nominal outer diameter) Dn and a pitch (pitch) P respectively equal to the first female thread. One of the threads 320 has a nominal outer diameter Dn and a pitch P. This means that the male thread 131 and the first female thread 320 are thread specifications that match each other. In this way, the screw 100 can be screwed into the first female thread 320 of the first assembly 300 through the male thread 131 of the assembly section 130. The maximum outer diameter D1 of the assembly section 130 is equal to the nominal outer diameter Dn of the male thread 131 and is greater than the minimum inner diameter D2 of the opening 310, so that after the assembly section 130 completely penetrates the first assembly 300, the screw 100 is in the long axis direction The displacement of L is restricted by the head 110 and the assembly section 130, and only the supporting section 120 can move freely in the long axis direction L through the opening 310. Since the maximum outer diameter D1 is greater than the minimum inner diameter D2, after the male thread 131 is screwed in and passes through the first female thread 320, the technical feature that the screw 100 is not easily lost from the first assembly 300 in the prior art can be achieved. In addition, when assembling the first assembly 300, the assembler does not need to spend extra time to check whether the specifications and dimensions of the screw 100 are correct. In other embodiments, the male thread and the first female thread can also be inch threads, as long as the assembly section can be screwed into the first female thread of the first assembly through the male thread, and the supporting section penetrates the first assembly part. Just make a hole. In other embodiments, the opening of the first assembly part may not be provided with the first female thread, and the head of the screw and the assembly section can be connected to the supporting member by welding, for example, after the supporting section penetrates through the opening. Opposite sides of the segment to achieve the effect of limiting the displacement of the screw in the direction of the long axis.

Please refer to Figure 1 to Figure 2. In this embodiment and some embodiments of the present invention, a radial width D3 of the head 110 is greater than a radial width D4 of the elastic member 200. The head 110 includes an abutting surface 111, and the abutting surface 111 faces the first assembly 300. The first side 210 of the elastic member 200 abuts against the abutting surface 111 of the head 110. Since the radial width D3 of the head 110 is larger than the radial width D4 of the elastic member 200, it can be ensured that the first side 210 of the elastic member 200 can completely abut the abutting surface 111, and the elastic member 200 can abut The face 111 exerts a more average restoring force on the head 110, but it is not limited to this. In other embodiments, part of the elastic element may be located outside the range of the head, as long as the restoring force of the elastic element does not cause the elastic element to skew and cause the elastic element to exert uneven force on the head.

Then please refer to Figure 4. 4 is a schematic side sectional view of the assembling device according to the second embodiment of the present invention. The following will only describe the differences between the second 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 supporting section 120 includes a pair of core portions 121 and a main body portion 122. The centering portion 121 is located between the head 110 and the main body 122. The centering portion 121 includes a circumferential surface 1211. The elastic member 200 further includes an inner surface 230. The inner surface 230 of the elastic member 200 is attached to the circumferential surface 1211 of the centering portion 121. In this way, the displacement of the first side 210 of the elastic member 200 in the radial direction R can be restricted, and the elastic member 200 is ensured to be aligned with the screw 100, so that the elastic member 200 applies a more even restoring force to the head 110 through the abutting surface 111. In other embodiments, there may be no centering part, as long as the elastic member can align the screw and apply a more even restoring force to the head.

Then please refer to Figure 5. FIG. 5 is a schematic side sectional view of an assembling device according to another embodiment of the present invention. The following will only describe 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 first assembly 300 further includes a first bending portion 340. The first bending portion 340 extends along the long axis direction L of the screw 100 and forms a wall surface of the opening 310. In this way, the abutting area between the supporting section 120 and the first assembly 300 can be increased, so that the screw 100 is less likely to shake in the first assembly 300. When the assembly section 130 is screwed into the first assembly 300 through the male thread 131, the first bent portion 340 can also ensure that the length of the first female thread 320 is sufficient. Generally speaking, the so-called sufficient length of the first female thread 320 means that the first female thread 320 can preferably have more than three turns, and it is less likely to cause the male thread 131 or the first female thread 320 to collapse when the screw 100 is screwed. After the first bent portion 340 ensures that the length of the first female thread 320 is sufficient, the thickness D5 of the first assembly 300 can be made thinner without considering the length of the first female thread 320, but it is not limited thereto. In other embodiments, the first bending portion may not be provided, as long as the thickness of the first assembly can ensure that the length of the first female thread is sufficient.

Then please refer to Figure 6. Fig. 6 is a schematic side sectional view of an assembling device according to still another embodiment of the present invention. The following will only describe 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 first assembly 300 further includes a top surface 330, and the top surface 330 includes a recess 331. The opening 310 is located in the recess 331, and the head 110 is located in the recess 331. That is, the screw 100 is locked to the first assembly 300 in a countersunk design. In this way, the screw 100 does not protrude from the first assembly 300, and it will not interfere with the head 110 of the screw 100 when the first assembly 300 is moved or other components are assembled outside the top surface 330. This is limited. In some embodiments, if the head does not interfere with other parts, the first assembly part can also be free of depressions.

In FIG. 1, the elastic member 200 is, for example, a compression spring (compression spring), but it is not limited to this. Refer to Figure 7. FIG. 7 is a three-dimensional schematic diagram of an elastic member of an assembling device according to another embodiment of the present invention. The following will only describe 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 elastic member 200' may also be a compression spring with ground end, that is, both ends of the elastic member 200' are grounded. As a result, the first side 210' and the second side 220' of the elastic member 200' can be relatively flat against the head 110 (shown in FIG. 1) and the first assembly 300 (shown in FIG. 1), respectively ), so that the elastic element 200' will not be too skewed and the elastic element 200' can apply a restoring force to the head 110 and the first assembly 300 more evenly.

Then please refer to Figure 8. FIG. 8 is a schematic side sectional view of an assembling device according to another embodiment of the present invention. The following will only describe 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 assembling device 10 further includes a second assembling member 400. The second assembly 400 is, for example, a server rack. The second assembly 400 includes an assembly hole 410 and a second female thread 420. The second female thread 420 is located in the assembly hole 410 of the second assembly 400, and the second female thread 420 is a general metric thread. A nominal outer diameter Dn and pitch P of the second female thread 420 are respectively equal to the nominal outer diameter Dn and pitch P of the male thread 131. This means that the male thread 131 and the second female thread 420 are thread specifications that match each other. In this way, the assembly section 130 can be screwed into the assembly hole 410 through the male thread 131. The assembly section 130 is detachably assembled to the second assembly part 400 through the assembly hole 410. The first assembly 300 can be assembled on the second assembly 400 through the screw 100. The assembled head 110 exerts a force on the elastic member 200 so that the elastic member 200 is compressed toward the first assembly member 300. The elastic member 200 is compressed between the head 110 and the first assembly member 300 by receiving a compressive force. Since the first side 210 of the elastic member 200 abuts the head 110 and the second side 220 abuts the first assembly 300, and the screw 100 bites the second female thread 420 of the second assembly 400 through the male thread 131, so that The elastic member 200 can increase the locking force of the screw 100, and the first assembly 300 is not easily separated from the second assembly 400. In other embodiments, the male thread and the second female thread can also be inch threads, as long as the assembly section can be screwed into the second female thread of the second assembly through the male thread, and the first assembly and the second assembly No relative displacement is required.

In this embodiment and some embodiments of the present invention, the length and wire diameter of the elastic member 200 can be selected freely, without being limited by the length of the floating screw housing as in the prior art. In this way, the length and wire diameter of the elastic element 200 can be selected according to the actual restoring force of the elastic element 200 required. Generally speaking, selecting a spring with a thicker wire diameter can make the elastic member 200 still maintain a compact length after being completely compressed. This compact length can ensure that the user will not over-lock the screw 100 to the second assembly 400 and prevent the male thread 131 or the second female thread 420 from chipping. In addition, since the spring specifications of the floating screws in the prior art cannot be freely selected, and considering that the springs of the floating screws in the prior art may not have sufficient restoring force, the floating screws need to be selected with a smaller hardness than the general specifications to make the floating screws It can be tightly locked on the second assembly. In this embodiment and some of the embodiments of the present invention, since the restoring force of the elastic member 200 is larger than that of the spring of the floating screw in the prior art, the screw 100 may adopt the hardness of the general specification. In this way, the screw 100 can avoid the problem that the screw thread is soft and easily collapsed.

Please refer to Figure 9 next. FIG. 9 is a schematic side sectional view of an assembling device according to another embodiment of the present invention. The following will only describe 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 assembly 400 further includes a second bending portion 430. The second bending portion 430 extends along the long axis direction L of the screw 100 and forms a wall surface of the assembly hole 410. In this way, when the assembly section 130 is screwed into the second assembly 400 through the male thread 131, the second bending portion 430 can ensure that the length of the second female thread 420 is sufficient. Generally speaking, the so-called sufficient length of the second female thread 420 means that the second female thread 420 is preferably capable of more than three turns, which is less likely to cause the male thread 131 or the second female thread 420 to collapse when the screw 100 is screwed. After the second bent portion 430 ensures that the length of the second female thread 420 is sufficient, the thickness D6 of the second assembly 400 can be made thinner without considering the length of the second female thread 420, but is not limited thereto. In other embodiments, the second bending part may not be provided, as long as the length of the second assembly can ensure that the length of the second female thread is sufficient.

According to the assembling device of the above embodiment, because the head part exceeds the opening, and the maximum outer diameter of the assembly section in the radial direction is greater than the minimum inner diameter of the opening. In this way, the displacement of the screw in the long axis direction is restricted by the head and the assembly section, and only the supporting section can move freely in the long axis direction through the opening. In this way, the technical feature of the prior art that the screw is not easily lost from the first assembly can be achieved. In addition, when assembling the first assembly, the assembler does not need to spend extra time to check whether the specifications and dimensions of the screws are correct.

In some embodiments, the male thread and the first female thread are thread specifications that match each other. In this way, the screw can be screwed into the first female thread of the first assembly through the male thread of the assembly section, and the assembly section can completely pass through the first assembly.

In some embodiments, the radial width of the head is larger than the radial width of the elastic member, so it can be ensured that the first side of the elastic member can completely abut the abutment surface, and the elastic member can penetrate the abutment surface The head exerts a more even restoring force.

In some embodiments, the inner surface of the elastic member is attached to the circumferential surface of the centering portion. In this way, the displacement of the first side of the elastic element in the radial direction can be restricted, and the elastic element is ensured to be aligned with the screw, so that the elastic element exerts a more even restoring force by abutting against the head.

In some embodiments, the first bending portion can increase the abutting area between the supporting section and the first assembly, so that the screw is less likely to shake in the first assembly. The first bending part can also ensure that the length of the first female thread is sufficient, and it is less likely to cause the male thread or the first female thread to collapse when the screw is screwed. After the first bending portion ensures that the length of the first female thread is sufficient, the thickness of the first assembly can be made thinner without considering the length of the first female thread.

In some embodiments, the screw is locked to the first assembly in a countersunk design. In this way, the screw does not protrude from the first assembly, and will not interfere with the head of the screw when the first assembly is moved or other components are assembled outside the top surface.

In some embodiments, the elastic element can also be a flat-head compression spring, that is, both ends of the elastic element are ground flat. In this way, the first side and the second side of the elastic element can abut against the head and the first assembly part relatively flatly, so that the elastic element is not too skewed and the elastic element can evenly align the head and the first assembly. An assembly applies a restoring force.

In some embodiments, the male thread and the second female thread have thread specifications that match each other. In this way, the assembly section can be screwed into the assembly hole through the male thread. The assembly section is detachably assembled to the second assembly part through the assembly hole. The first assembly can be assembled on the second assembly through screws. The assembled head exerts a force on the elastic part, so that the elastic part is compressed toward the first assembly part. The elastic piece can increase the screw's locking force, and the first assembly piece is not easily separated from the second assembly piece

In some embodiments, the length and wire diameter of the elastic element can be selected according to the actual restoring force of the elastic element. Generally speaking, selecting a spring with a thicker wire diameter can make the elastic member still maintain a compact length after being fully compressed. This compact length can ensure that the user will not over-lock the screw to the second assembly, and prevent the male thread or the second female thread from chipping. In addition, since the spring specifications of the floating screws in the prior art cannot be freely selected, and considering that the springs of the floating screws in the prior art may not have sufficient restoring force, the floating screws need to be selected with a smaller hardness than the general specifications to make the floating screws It can be tightly locked on the second assembly. In some embodiments, since the restoring force of the elastic member is larger than that of the spring of the floating screw in the prior art, the hardness of the screw may be of a general specification. In this way, the screw can avoid the problem of easy fracture due to the soft thread.

In some embodiments, the second bending portion can ensure that the length of the second female thread is sufficient, and it is less likely to cause the male thread or the second female thread to collapse when the screw is screwed. After the second bending portion ensures that the length of the second female thread is sufficient, the thickness of the second assembly can be made thinner without considering the length of the second female thread.

Although the present invention is disclosed in the foregoing embodiments as above, it is not intended to limit the present invention. Anyone familiar with similar art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of patent protection for inventions shall be determined by the scope of patent applications attached to this specification.

10: assembly device 100: screw 110: head 111: abutment surface 120: bearing section 121: centering section 1211: circumferential surface 122: main body 130: assembly section 131: male thread 200, 200': elastic member 210 , 210': first side 220, 220': second side 230: inner side 300: first assembly 310: opening 320: first female thread 330: top surface 331: recess 340: first bending part 400 : Second assembly 410: Assembly hole 420: Second female thread 430: Second bending part D1: Maximum outer diameter D2: Minimum inner diameter D3, D4: Radial width D5, D6: Thickness Dn: Nominal outer diameter P: Pitch R: Radial direction L: Long axis direction

Fig. 1 is a schematic side sectional view of an assembling device according to an embodiment of the present invention. Fig. 2 is an exploded side sectional view of the assembling device of Fig. 1; Fig. 3 is a schematic side sectional view of the assembling section of the assembling device of Fig. 1 being screwed into the opening of the first assembling part. 4 is a schematic side sectional view of the assembling device according to the second embodiment of the present invention. FIG. 5 is a schematic side sectional view of an assembling device according to another embodiment of the present invention. Fig. 6 is a schematic side sectional view of an assembling device according to still another embodiment of the present invention. FIG. 7 is a three-dimensional schematic diagram of an elastic member of an assembling device according to another embodiment of the present invention. FIG. 8 is a schematic side sectional view of an assembling device according to another embodiment of the present invention. FIG. 9 is a schematic side sectional view of an assembling device according to another embodiment of the present invention.

100: Screw

130: assembly section

131: male thread

400: second assembly

410: Assembly hole

420: second female thread

430: second bending part

D6: Thickness

L: Long axis direction

Claims (9)

An assembly device includes: a screw, including a head, a supporting section, and an assembly section. The head and the assembly section are connected to opposite sides of the supporting section, and the supporting section includes a pair of cores. And a main body, the centered portion is located between the head and the main body, the centered portion includes a circumferential surface; an elastic member, the supporting section penetrates the elastic member, the elastic member includes an opposite first One side, a second side, and an inner side surface, the inner side surface of the elastic member is attached to the circumferential surface of the centering portion, and the first side abuts against the head; and a first assembly including a An opening, the supporting section penetrates the opening, the head and the assembly section are located on opposite sides of the first assembly, and the second side abuts against the first assembly; wherein, the assembly section has a diameter A maximum outer diameter in the direction is greater than a minimum inner diameter of the opening. The assembling device described in claim 1, wherein the assembling section includes a male thread, and the first assembling part further includes a first female thread, and the first female thread is located in the opening of the first assembling part , The male thread and the first female thread are both a universal metric screw thread (ISO metric screw thread), a nominal outer diameter (nominal outer diameter) and pitch (pitch) of the male thread are respectively equal to the first female thread One of the nominal outer diameter and pitch. The assembling device described in claim 1, wherein a radial width of the head is greater than a radial width of the elastic member, the head includes an abutment surface, the abutment surface faces the first assembly The first side of the elastic member abuts against the abutting surface of the head. The assembling device described in claim 1, wherein the first assembling part further includes a first bending portion, and the first bending portion extends along a long axis direction of the screw and is shaped Make a wall of the opening. According to the assembling device described in claim 1, wherein the first assembly further includes a top surface, the top surface includes a recess, the opening is located in the recess, and the head is located in the recess. According to the assembling device described in item 1 of the scope of patent application, the elastic member is a compression spring. An assembly device includes: a screw, including a head, a supporting section, and an assembly section. The head and the assembly section are connected to opposite sides of the supporting section, and the supporting section includes a pair of cores. And a main body, the centered portion is located between the head and the main body, the centered portion includes a circumferential surface; an elastic member, the supporting section penetrates the elastic member, the elastic member includes an opposite first One side, a second side, and an inner side surface, the inner side surface of the elastic member is attached to the circumferential surface of the centering portion, and the first side abuts against the head; a first assembly including an opening The supporting section penetrates the opening, the head and the assembling section are located on opposite sides of the first assembling part, and the second side abuts against the first assembling part; and a second assembling part, including a An assembly hole, the assembly section is detachably assembled to the second assembly part through the assembly hole; wherein, a maximum outer diameter of the assembly section in a radial direction is greater than a minimum inner diameter of the opening, and the head faces The elastic member applies a force so that the elastic member is compressed toward the first assembly member. The assembling device described in claim 7, wherein the assembling section includes a male thread, the first assembly further includes a first female thread, and the first female thread is located in the opening of the first assembly , The second assembly further includes a second female thread, the second female thread In the assembly hole of the second assembly, the male thread, the first female thread, and the second female thread are all a universal metric thread, and a nominal outer diameter and pitch of the male thread are respectively equal to the first The nominal outer diameter and pitch of the female thread are respectively equal to the nominal outer diameter and pitch of the second female thread. According to the assembling device described in claim 7, wherein the second assembling part further includes a second bending portion, the second bending portion extends along a long axis direction of the screw and forms one of the assembling holes Wall surface.

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