CN104125742A - Fixing device and plate assembly - Google Patents

Abstract

A fixing device for fixing the relatively inclined first plate and second plate, including a flexible sleeve and a rod passing through the sleeve, the sleeve is used to be embedded in the first plate, and the rod The component passes obliquely through the first plate and is vertically locked into the second plate, and the sleeve is pressed by the rod to elastically press against the first plate. The cost of the fixture is low and it is suitable for industrial applications. The invention also provides a panel assembly comprising a fixing device.

Description

Fixtures and panel combinations

technical field

The invention relates to a fixing device, in particular to a fixing device for fixing a circuit board.

Background technique

Currently, the circuit board is usually screwed to the housing to achieve a fixed connection between the two. However, in some specific applications, the housing is not in an ideal flat shape, but may be bent in some parts. In this case, the screw cannot pass through the circuit board smoothly and be locked into the screw hole of the bent part of the casing. For this reason, the industry usually adds a bracket between the circuit board and the bent part of the housing. The circuit board is fixed by locking the screw through the circuit board into the bracket, and the other screw is passed through the bracket to lock the bracket. The part bent into the housing is used to realize the fixation between the bracket and the housing. Thus, the fixation between the circuit board and the housing can be achieved through the transition of the bracket. However, since the bracket needs to be specially designed and manufactured in accordance with the structure and shape of the bent portion of the housing, the cost is relatively high, which is not conducive to popularization and application in the industry.

Contents of the invention

Therefore, it is necessary to provide a lower-cost fixing device and a board assembly using the fixing device.

A fixing device for fixing a first plate on a second plate inclined relative to the first plate, comprising a flexible sleeve and a rod passing through the sleeve, the sleeve is used to be embedded in the second plate In the positioning hole of a board, the rod passes obliquely through the first board and compresses the sleeve on the first board, and then locks into the second board.

A panel assembly, comprising the above-mentioned fixing device, a first panel and a second panel.

Since the flexible sleeve is embedded in the first plate, when the rod passes through the first plate and is locked into the second plate, the sleeve can be compressed by the rod and press against the first plate member, thereby exerting pressure on the first plate member toward the second plate member. Thus, through the cooperation of the sleeve and the rod, the fixing between the first plate and the second plate can be realized. Compared with existing brackets, the cost of the sleeve is significantly reduced, which can meet the needs of large-scale industrial applications.

The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a perspective view of a panel assembly according to an embodiment of the present invention.

FIG. 2 is an exploded view of the panel assembly of FIG. 1 .

Fig. 3 is an enlarged view of the fixing device for panel assembly in Fig. 2 .

FIG. 4 is a top view of the first panel of the panel assembly in FIG. 2 .

FIG. 5 is a cross-sectional view of the panel assembly of FIG. 1 .

FIG. 6 is a partial enlarged view of the panel assembly of FIG. 5 .

Figure 7 is a front view of the sleeve of the securing device of Figure 3 prior to deformation.

Description of main component symbols

Panel combination 10 first board 20 positioning hole twenty two positioning hole 22a positioning hole 22b first hole 220 first hole 220a first hole 220b Second opening 222 Second opening 222a Second opening 222b positioning hole twenty four case 30 second plate 40 Oval hole 42 Boss 44 screw hole 440 third board 50 to open 52 Boss 54 Fixtures 60 sleeve 70 casing 72 perforation 720 rim 74 through hole 740 Lever 80 head 82 shaft 84 plug 90 pull wire 92 barb 94

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

Please refer to FIG. 1 , which shows a panel assembly 10 according to an embodiment of the present invention. The panel assembly 10 includes a first panel 20 , a casing 30 and a fixing device 60 for fixing the first panel 20 on the casing 30 .

Please refer to FIGS. 2 and 4 together. In this embodiment, the first board 20 is a circuit board, which has a rectangular flat structure. A positioning hole 22 is defined on one side of the first plate 20 . The positioning hole 22 includes a first opening 220 and a second opening 222 communicating with the first opening 220 . The first opening 220 penetrates laterally through the side of the first plate 20 . The width of the first opening 220 gradually decreases from the side of the first plate 20 toward the second opening 222 . The second opening 222 is substantially circular, and its diameter is greater than the minimum width of the first opening 220 .

Please also refer to FIG. 5 , the housing 30 includes a second plate 40 and a third plate 50 inclined relative to the second plate 40 . A plurality of oval holes 42 are defined on the second plate 40 . A post 44 protrudes upward from the second plate 40 near the third plate 50 . The protrusion 44 is perpendicular to the second plate 40 and corresponds to the positioning hole 22 of the first plate 20 . A screw hole 440 is defined on the top surface of the protrusion 44 for passing the fixing device 60 therethrough. The third plate 50 is obliquely bent from one side of the second plate 40 . In this embodiment, the angle between the third plate 50 and the second plate 40 is greater than 180 degrees and less than 270 degrees. The third board 50 is parallel to the first board 20 . A rectangular opening 52 is defined in a central area of the third plate 50 . The first plate 20 is attached to the third plate 50 during installation, and one side of the first plate 20 extends beyond the third plate 50 so that its positioning hole 22 is aligned with the boss 44 of the second plate . Preferably, several protrusions 54 are also formed on the third plate 50 , and the first plate 20 forms several positioning holes 24 corresponding to the protrusions 54 of the third plate 50 . Since the first plate 20 is attached parallel to the third plate 50, the screws (not shown) can directly pass through the positioning holes 24 of the first plate 20 and be locked into the bosses 54 of the third plate 50. , so as to realize the fixing between the first plate 20 and the third plate 50 .

Please refer to FIGS. 3 and 7 together. The fixing device 60 includes a flexible sleeve 70 and a rod 80 . The sleeve 70 is integrally formed of soft material such as plastic, which can be elastically deformed under external force. The sleeve 70 includes a hollow sleeve 72 and a plurality of rings 74 formed on the outer peripheral surface of the sleeve 72 . A through hole 720 is defined in the casing 72 for the rod 80 to pass through. The outer diameter of the middle portion of the sleeve 72 is smaller than the outer diameters of the upper and lower ends of the sleeve 72 , that is to say, the middle portion of the sleeve 72 shrinks inwardly relative to the upper and lower ends of the sleeve 72 . In this embodiment, the outer diameter of the middle portion of the sleeve 72 is equal to or slightly larger than the diameter of the second opening 222 of the positioning hole 22 . The thickness of the middle part of the casing 72 is equivalent to the thickness of the first plate 20 . The rings 74 are respectively formed on the upper end and the lower end of the sleeve 72 , wherein the middle of the sleeve 72 is exactly located between two adjacent rings 74 . The outer diameter of the ring 74 is larger than the diameter of the second opening 222 of the positioning hole 22 . During assembly, the middle portion of the sleeve 72 of the sleeve 70 is inserted laterally through the first opening 220 of the first plate 20 . During insertion, the middle portion of the sleeve 72 is compressed by the periphery of the first opening 220 to deform. After the middle portion of the sleeve 72 is translated into the second opening 222 , the middle portion of the sleeve 72 recovers or partially recovers and deforms, so as to be embedded in the second opening 222 . Due to the blocking of the ring edges 74 , the first plate 20 is just sandwiched between two adjacent ring edges 74 . Moreover, the smaller width of the first opening 220 can also ensure that the middle part of the sleeve 72 will not slip out of the first opening 220 . Thus, the sleeve 70 is tightly embedded in the first plate 20 .

The rod 80 includes a head 82 and a rod 84 vertically extending downward from the head 82 . The diameter of the head portion 82 is larger than the diameter of the perforation 720 of the sleeve 70 and the diameter of the shank 84 is smaller than the diameter of the perforation 720 . Please refer to FIG. 6 together. When assembling, first place the first panel 20 on the third panel 50 so that the positioning holes 22 are aligned with the protrusions 44 of the second panel 40 . Optionally, the first plate 20 may be pre-fixed on the boss 54 of the third plate 50 by screws, or may be fixed to the third plate 50 after the second plate 40 is locked. Then, the sleeve 70 is embedded in the positioning hole 22 of the first plate 20 . Afterwards, the rod portion 84 of the rod member 80 is inserted into the sleeve 70 toward the through hole 720 of the sleeve 70 . During the inserting process, the orientation of the rod 80 is adjusted so that the rod 84 is aligned with the screw hole 440 of the boss 44 of the second plate 40 . At this time, the rod 80 is inclined relative to the first plate 20 and perpendicular to the second plate 40 , and the sleeve 70 is pressed by the rod 80 to maintain the same oblique orientation relative to the first plate 20 as the rod 80 . . During the inclination process, the sleeve 70 is compressed, and one side of the ring 74 at the upper end is pressed against the top surface of the first plate 20, and the opposite side of the ring 74 at the lower end is pressed against each other. Press against the bottom surface of the first panel 20 . The bottom end of the rod portion 84 of the rod member 80 is finally locked into the screw hole 440 of the boss 44 of the second board member 40 . At this time, the head 82 of the rod 80 presses against the top of the sleeve 70 , so that the first plate 20 is fixed on the second plate 40 through the sleeve 70 . Due to the use of the flexible sleeve 70, its manufacturing cost is lower, so the manufacturing cost of the whole device is also reduced. Moreover, the whole assembly process is also relatively convenient, which can save installation time.

It can be understood that, in some cases, the sleeve 70 may only include the ring edge 74 located above the middle of the sleeve 72 , and no ring edge 74 is formed below the sleeve 72 . During the installation process, this kind of sleeve 70 can also play the role of pressing against the first plate 20, and can still exert an elastic force on the first plate 20 toward the second plate 40, so that the first plate 20 and the second plate 40 The second boards 40 are fixed together.

In addition, in order to further increase the stability of the sleeve 70 , two pins 90 can be formed on the top surface and the bottom surface of the sleeve 70 respectively. Each pin 90 includes a pull wire 92 and a plurality of barbs 94 formed at the end of the pull wire 92 . The collar 74 of the sleeve 70 defines aligned through holes 740 on its non-compressed side. After the first plate 20 and the second plate 40 are locked by the rod 80, the barb 94 of the upper latch 90 is inserted into the through hole 740 on the non-compressed side of the upper ring 74 from top to bottom, and abuts against Press the bottom surface of the non-compressed side of the ring edge 74, thereby stretching the non-compressed side of the ring edge 74 toward the compressed side; hole 740, and presses against the top surface of the non-compressed side of the collar 74, thereby stretching the non-compressed side of the collar 74 toward the compressed side. As a result, the sleeve 70 is reinforced by the pin 90 .

In addition, the positioning hole 22 of the first plate 20 is not limited to the shape described above, and may also have other shapes. As shown in FIG. 4 , for example, the first opening 220a of the positioning hole 22a is circular, and the second opening 222a is approximately semicircular. The diameter of the first opening 220 a is slightly larger than the diameter of the ring edge 74 of the sleeve 70 , so as to facilitate the insertion of the sleeve 70 directly from the inside of the first plate 20 . The diameter of the second opening 222 a is equivalent to the outer diameter of the middle part of the casing 72 . For another example, the first opening 220 b and the second opening 222 b of the positioning hole 22 b are approximately semicircular, and the diameters of both are equivalent to the outer diameter of the middle portion of the sleeve 72 .

Claims (10)

1. A fixing device, which is used to fix the relatively inclined first plate and the second plate, is characterized in that: it includes a flexible sleeve and a rod passing through the sleeve, and the sleeve is used to be embedded in the second plate. In one plate, the rod passes obliquely through the first plate and is vertically locked into the second plate, and the sleeve is pressed by the rod to elastically press against the first plate. 2. The fixing device according to claim 1, characterized in that: the sleeve includes a sleeve and a plurality of rings formed on the outer peripheral surface of the sleeve, the rod is passed through the sleeve, and the first plate is sandwiched between Between two adjacent ring edges. 3. The fixing device as claimed in claim 2, wherein the first sides of the ring edges are pressed against each other to elastically press against the first board. 4. The fastening device of claim 3, further comprising a latch, the latch comprising a pull wire connected to the sleeve and a barb formed on the pull wire, the barb passing through the second side of the loop and abutting against Compressing the second side of the loop thereby stretching the second side of the loop toward the first side. 5. The fixing device as claimed in claim 4, wherein the first side and the second side of the ring are respectively located on opposite sides of the rod. 6. The fixing device according to claim 2, wherein the rod member comprises a head and a rod, the head presses against the sleeve, and the rod passes through the sleeve. 7. A panel combination comprising the fixing device according to any one of claims 1-6, further comprising a first panel and a second panel. 8 . The panel assembly according to claim 7 , further comprising a third panel connected to the second panel, the first panel being parallel to the third panel and attached to the third panel. 9 . The board combination according to claim 8 , wherein the second board forms a protruding post at a position close to the third board, and the rod is locked in the protruding post. 10 . 10. The panel assembly according to claim 8, wherein the first panel is a circuit board, and the second panel and the third panel together form a casing.