Cable fixing mechanism

Abstract

The utility model discloses a cable fixing mechanism, comprising a housing which is provided with a first end and a second end along a butt joint direction, the housing is provided with a mounting hole along the butt joint direction in a penetrating manner, the first end is provided with a limiting part and a connecting part, the limiting part can limit the degree of freedom of a cable end except for moving along the butt joint direction, and the connecting part can be used for connecting the cable end with the mounting hole; one end, close to the cable end, of a cable body of the cable is accommodated in the mounting hole; the fixing device is used for fixing the circuit board, the circuit board is provided with an interface which can be in plug-in fit with the cable end, and the shell can be connected with the fixing device through the connecting part; the cable pressing block is detachably installed at the second end of the shell, the side, facing the installation hole, of the cable pressing block can stretch into the installation hole and abut against the part, close to the cable end, of the cable body, and the cable pressing block can limit the cable body in the installation hole so as to limit the freedom degree of movement of the cable end in the butt joint direction. According to the utility model, the reliable butt joint of the cable end and the interface of the circuit board can be ensured, and the stability and speed of data transmission are ensured.

Description

Technical Field

[0001] The utility model relates to the field of cable fixing devices, in particular to a cable fixing mechanism. Background Art

[0002] The SFF-8643 interface cable is a high-speed data cable. The interface SFF-8643 it uses is a 36-pin "high-density SAS" connector. It complies with the latest SAS3.0 specification, can achieve HDSAS internal interconnection, and supports 12Gb / s data transmission protocol. It is easy to plug and unplug and easy to use.

[0003] The plug-in fixing method between the SFF-8643 interfaces is snap-on fixing, which has the disadvantages of unstable connection between the cable and the SFF-8643 interface on the PCBA end and easy loosening. In the test plug-in and unplugging during the product production stage and the bumps during the product transportation process, it is more likely to cause the interface connection between the cable end and the circuit board to loosen. The loosening of the interface between the cable end and the circuit board will affect the stability of data transmission and even cause data loss, equipment crash, etc. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a cable fixing mechanism, which can ensure the reliable connection between the cable end and the circuit board interface, and ensure the stability and speed of data transmission.

[0005] A cable fixing mechanism according to an embodiment of the utility model comprises: a shell having a first end and a second end along a mating direction, the shell having a mounting hole penetrating along the mating direction and a limiting portion and a connecting portion being arranged at the first end, the cable end of the cable can extend into the limiting portion and be at least partially placed in the limiting portion, the limiting portion can limit the freedom of the cable end except for movement along the mating direction, and an end of the cable body of the cable close to the cable end is accommodated in the mounting hole; a fixing device for fixing a circuit board, the circuit board being provided with an interface that can be plugged and matched with the cable end, the shell being connected to the fixing device through the connecting portion; a wire pressing block detachably mounted on the second end of the shell, the wire pressing block can extend into the mounting hole on a side facing the mounting hole and press the portion of the cable body close to the cable end, the wire pressing block can limit the cable body in the mounting hole to limit the freedom of movement of the cable end along the mating direction.

[0006] At least the following beneficial effects are achieved: when in use, the cable end of the cable can be pushed into the limiting portion from the first end to the second end of the shell along the docking direction, and the cable end is at least partially placed in the limiting portion. The limiting portion can limit the five degrees of freedom of the cable end except for the movement along the docking direction. At this time, the end of the cable body connected to the cable end is located in the mounting hole, and then the wire pressing block is installed at the second end of the shell, and the wire pressing block limits the part of the cable body close to the cable end in the mounting hole. The fixing effect can also be enhanced by adding elastic materials such as sponges, thereby limiting the freedom of the cable end to move along the docking direction, and realizing the limitation of the six degrees of freedom of the cable end. After completing the above steps, the cable end and the interface on the circuit board can be plugged into each other, and then the shell is connected to the fixing device through the connecting part. The mechanism of the utility model can further limit the position of the cable end and the position of the cable body through the connecting part structure and the wire pressing block structure after completing the plugging of the interface between the cable end and the circuit board. Therefore, the utility model can ensure the reliable docking of the interface between the cable end and the circuit board, and ensure the stability and speed of data transmission.

[0007] According to some embodiments of the utility model, the connecting portion is located outside the mounting hole and includes at least two connecting columns and at least two fastening bolts, each of the connecting columns is provided with a through hole extending along the docking direction, and the fixing device is provided with a plurality of first threaded holes corresponding one by one to the through holes, and the fastening bolts can pass through the corresponding through holes and be locked in the corresponding first threaded holes.

[0008] According to some embodiments of the utility model, an avoidance gap is arranged between adjacent connecting columns, a slot is opened in the mounting hole along its own axis, the mounting hole, the limiting portion and the avoidance gap are interconnected, the width of the avoidance gap is greater than the outer diameter of the cable body, the cable body can enter the mounting hole after passing through the avoidance gap and the slot, and the wire pressing block can extend into the mounting hole from the slot position on one side of the mounting hole and press the portion of the cable body close to the cable end.

[0009] According to some embodiments of the utility model, the fixing device includes: a base plate for supporting the circuit board; a cover plate buckled on the base plate to cover the circuit board; a fixing seat installed on the cover plate and located at a position corresponding to the interface of the circuit board, the first threaded hole is opened on the fixing seat, and the shell can be connected to the first threaded hole through the fastening bolt.

[0010] According to some embodiments of the utility model, the fixing seat is provided with a groove extending along the docking direction at a position corresponding to each of the first threaded holes, the shape of the groove matches the shape of the connecting column, and the connecting column can be embedded in the groove along the docking direction.

[0011] According to some embodiments of the present invention, the limiting portion is located inside the shell and at one end of the mounting hole.

[0012] According to some embodiments of the utility model, the limiting portion has a first step surface and a second step surface both arranged perpendicular to the docking direction, the second step surface is closer to the first end than the first step surface, when at least a portion of the cable end is placed in the limiting portion, the spring sheet of the cable end abuts against the inner wall of the limiting portion, and the spring sheet is located on the side of the second step surface close to the first end, and one end of the cable end connected to the cable body abuts against the first step surface.

[0013] According to some embodiments of the utility model, a protrusion is provided on the middle part of the wire pressing block on the side facing the mounting hole, and the protrusion extends along the docking direction. The protrusion can press the cable body, and a connecting bolt is also installed on the wire pressing block. A second threaded hole is provided on the shell corresponding to the position of the connecting bolt, and the connecting bolt can be threadedly matched with the second threaded hole.

[0014] According to some embodiments of the present invention, the shell is made of metal.

[0015] According to some embodiments of the present invention, the cable is a SFF-8643 interface cable.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0019] Figure 2 arts Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of an embodiment of the utility model in which a cable is inserted into a housing;

[0021] Figure 4 for Figure 3 A schematic cross-sectional structure diagram of ;

[0022] Figure 5 It is a structural schematic diagram of a cable in the prior art;

[0023] Figure 6 for Figure 3 Schematic diagram of the structure after hiding the cables;

[0024] Figure 7 for Figure 1 A schematic cross-sectional view of the interface between the cable and the circuit board;

[0025] Figure 8 for Figure 7 Schematic diagram of the local enlarged structure at point B in the middle.

[0026] Figure Number:

[0027] The housing 100, the first end 110, the second end 120, the mounting hole 130, the limiting portion 140, the first step surface 141, the second step surface 142, the connecting portion 150, the connecting column 151, and the fastening bolt 152;

[0028] Cable 200, cable end 210, cable body 220, spring piece 230;

[0029] The fixing device 300, the bottom plate 310, the cover plate 320, the fixing seat 330, and the groove 331;

[0030] Circuit board 400, interface 410;

[0031] The wire pressing block 500, the protrusion 510, and the connecting bolt 520;

[0032] Avoidance clearance 600. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the description involving orientation, such as the orientation or positional relationship indicated by the docking direction, etc., is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figures 1 to 8 The utility model discloses a cable fixing mechanism, including a housing 100 , a fixing device 300 and a wire pressing block 500 .

[0038] The housing 100 has a first end 110 and a second end 120 along the mating direction, a mounting hole 130 is passed through the housing 100 along the mating direction, and a limiting portion 140 and a connecting portion 150 are provided at the first end 110, the cable end 210 of the cable 200 can extend into the limiting portion 140 and be at least partially placed in the limiting portion 140, the limiting portion 140 can limit the freedom of the cable end 210 except for moving along the mating direction, the cable body 220 of the cable 200 close to the cable end 210 is accommodated in the mounting hole 130, and the fixing device 300 is used to A fixed circuit board 400 is provided with an interface 410 which can be plugged into and matched with the cable end 210. The housing 100 can be connected to the fixing device 300 through the connecting portion 150. The wire pressing block 500 can be detachably mounted on the second end 120 of the housing 100. The wire pressing block 500 can extend into the mounting hole 130 on the side facing the mounting hole 130 and press against the portion of the cable body 220 close to the cable end 210. The wire pressing block 500 can restrict the cable body 220 within the mounting hole 130 to limit the freedom of movement of the cable end 210 along the docking direction.

[0039] It can be understood that when in use, the cable end 210 of the cable 200 can be pushed into the limiting portion 140 from the first end 110 to the second end 120 of the shell 100 along the docking direction, and the cable end 210 is at least partially placed in the limiting portion 140. The limiting portion 140 can limit the five degrees of freedom of the cable end 210 except for the movement along the docking direction. At this time, the end of the cable body 220 connected to the cable end 210 is located in the mounting hole 130, and then, the wire pressing block 500 is installed at the second end 120 of the shell 100, and the wire pressing block 500 limits the part of the cable body 220 close to the cable end 210 in the mounting hole 130. The fixing effect can also be enhanced by adding elastic materials such as sponges, thereby limiting the freedom of movement of the cable end 210 along the docking direction, thereby achieving the limitation of the six degrees of freedom of the cable end 210. After completing the above steps, the cable end 210 and the interface 410 on the circuit board 400 can be plugged into each other, and then the housing 100 is connected to the fixing device 300 through the connecting portion 150. The mechanism of the utility model can further limit the position of the cable end 210 and the position of the cable body 220 through the connecting portion 150 structure and the wire pressing block 500 structure after completing the plugging of the cable end 210 and the interface 410 of the circuit board 400, so that the utility model can ensure the reliable docking of the cable end 210 and the interface 410 of the circuit board 400, and ensure the stability and rate of data transmission.

[0040] It should be noted that the docking direction in the present invention is the direction in which the cable end 210 and the interface 410 of the circuit board 400 are plugged into each other. This direction can be set according to actual conditions and can be the up and down direction or the left and right direction, and is not specifically limited here.

[0041] Reference Figure 3 , Figure 4 and Figure 6 In the embodiment of the utility model, the connection part 150 is located outside the mounting hole 130 and includes at least two connection columns 151 and at least two fastening bolts 152. Each connection column 151 is provided with a through hole extending along the docking direction (not shown in the figure), and the fixing device 300 is provided with a plurality of first threaded holes (not shown in the figure) corresponding to the through holes. The fastening bolts 152 can pass through the corresponding through holes and be locked in the corresponding first threaded holes. By setting the connection column 151 structure, the fastening bolts 152 can be connected to the fixing device 300 in a position, so as to prevent the cable end 210 from moving or even poorly plugged after the cable end 210 is plugged into the interface 410 of the circuit board 400. Locking by the fastening bolts 152 is efficient and convenient. In some embodiments of the utility model, the number of the connection column 151 and the fastening bolts 152 can be set to two.

[0042] Reference Figure 6 In the embodiment of the utility model, an avoidance gap 600 is provided between adjacent connecting columns 151, a notch is provided along the axial direction of the mounting hole 130, the mounting hole 130, the limiting portion 140 and the avoidance gap 600 are mutually connected, and the width of the avoidance gap 600 is greater than the outer diameter of the cable body 220. The cable body 220 can enter the mounting hole 130 after passing through the avoidance gap 600 and the notch, and the wire pressing block 500 can extend into the mounting hole 130 from the notch position on the side facing the mounting hole 130 and press the portion of the cable body 220 close to the cable end 210. The above structure facilitates the placement of the cable body 220 in the mounting hole 130. When the cable body 220 is placed in the mounting hole 130, the cable end 210 can be moved along the docking direction with the cable body 220 by simply pulling the cable body 220 in the docking direction and finally placing the cable end 210 in the limiting portion 140.

[0043] like Figure 1 and Figure 2 As shown, the fixing device 300 in the embodiment of the utility model includes a bottom plate 310, a cover plate 320 and a fixing seat 330. The bottom plate 310 is used to support the circuit board 400, and the cover plate 320 is buckled on the bottom plate 310 to cover the circuit board 400. Of course, the interface 410 on the circuit board 400 is exposed. The fixing seat 330 is installed on the cover plate 320 and is located at a position corresponding to the interface 410 of the circuit board 400. The first threaded hole is opened on the fixing seat 330, and the housing 100 can be connected to the first threaded hole by a fastening bolt 152. The fixing seat 330 can be set to a detachable connection mode with the cover plate 320, so that the utility model can be easily adapted to interfaces 410 of circuit boards 400 of different models and cable terminals 210 of different models.

[0044] Reference Figure 2 In the embodiment of the utility model, the fixing seat 330 is provided with a groove 331 extending along the docking direction at the position corresponding to each first threaded hole, and the shape of the groove 331 matches the shape of the connecting column 151, and the connecting column 151 can be embedded in the groove 331 along the docking direction. The groove 331 can provide guidance and limit for the connecting column 151, and even achieve the effect of blind insertion, which facilitates the rapid connection of the housing 100 and the fixing device 300 and prevents the relative movement or rotation of the two after the connection.

[0045] like Figure 4 As shown, it can be understood that the limiting portion 140 in the embodiment of the utility model can be arranged to be located inside the housing 100 and at one end of the mounting hole 130 , so that the cable end 210 can be naturally restricted by the limiting portion 140 after being inserted into the mounting hole 130 .

[0046] Further references Figure 4The limiting portion 140 in the embodiment of the utility model has a first step surface 141 and a second step surface 142 which are both arranged perpendicular to the docking direction. The second step surface 142 is closer to the first end 110 than the first step surface 141. When at least a part of the cable end 210 is placed in the limiting portion 140, the spring piece 230 of the cable end 210 abuts against the inner wall of the limiting portion 140, and the spring piece 230 is located on the side of the second step surface 142 close to the first end 110, and one end of the cable end 210 connected to the cable body 220 abuts against the first step surface 141. It should be noted that the cable 200 including the cable end 210, the cable body 220 and the spring piece 230 is a conventional structure of the cable 200 in the prior art. By arranging the first step surface 141 and the second step surface 142 in the limiting portion 140, the position of the cable end 210 can be more reliably limited. Figure 6 As shown, the limiting portion 140 is provided with five surfaces respectively attached to the cable end 210 to limit the five degrees of freedom of the cable end 210. Specifically, the limiting portion 140 is Figure 4 The upper and lower surfaces of the cable end 210 are respectively attached to the upper and lower surfaces of the cable end 210, and the limiting portion 140 is Figure 4 The front and rear directions shown are respectively in contact with the front and rear surfaces of the cable end 210, and the first step surface 141 of the limiting portion 140 is in contact with the rear surface of the cable end 210. It should be noted that the remaining degree of freedom of the cable end 210 can be limited when the pressing block 500 presses the cable body 220.

[0047] like Figure 6 As shown, a protrusion 510 is provided in the middle of the wire pressing block 500 in the embodiment of the utility model on the side facing the mounting hole 130, so that the overall cross-section of the wire pressing block 500 is T-shaped, and the protrusion 510 extends along the docking direction. The protrusion 510 can press the cable body 220, and a connecting bolt 520 is also installed on the wire pressing block 500. A second threaded hole (not shown in the figure) is provided at the position corresponding to the connecting bolt 520 of the shell 100, and the connecting bolt 520 can be threadedly matched with the second threaded hole, so as to fix the cable body 220.

[0048] It is understandable that the housing 100 in the embodiment of the present invention may be made of metal. Of course, other materials applicable to the present invention may also be used.

[0049] In addition, it should be noted that the cable 200 mentioned in the present invention may be a SFF-8643 interface cable. Of course, other similar type cables may also be positioned using the mechanism in the present invention.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A cable fixing mechanism, characterized in that: include: A shell having a first end and a second end along a mating direction, a mounting hole penetrating the shell along the mating direction and a limiting portion and a connecting portion being arranged at the first end, a cable end of the cable being able to extend into the limiting portion and at least partially being placed in the limiting portion, the limiting portion being able to limit the freedom of the cable end except for movement along the mating direction, and an end of the cable body of the cable close to the cable end being accommodated in the mounting hole; A fixing device, used for fixing a circuit board, wherein the circuit board is provided with an interface which can be plugged and matched with the cable end, and the housing can be connected to the fixing device through the connecting portion; A wire pressing block is detachably mounted on the second end of the shell, and the side of the wire pressing block facing the mounting hole can extend into the mounting hole and press the portion of the cable body close to the cable end. The wire pressing block can restrict the cable body within the mounting hole to limit the freedom of movement of the cable end along the docking direction.

2. A cable fixing mechanism according to claim 1, characterized in that: The connecting portion is located outside the mounting hole and includes at least two connecting columns and at least two fastening bolts, each of the connecting columns is provided with a through hole extending along the docking direction, and the fixing device is provided with a plurality of first threaded holes corresponding one to one with the through holes, and the fastening bolts can pass through the corresponding through holes and be locked in the corresponding first threaded holes.

3. A cable fixing mechanism according to claim 2, characterized in that: An avoidance gap is arranged between adjacent connecting columns, and a slot is opened in the mounting hole along its own axis. The mounting hole, the limiting portion and the avoidance gap are interconnected, and the width of the avoidance gap is greater than the outer diameter of the cable body. The cable body can enter the mounting hole after passing through the avoidance gap and the slot, and the wire pressing block can extend into the mounting hole from the slot position on one side of the mounting hole and press the portion of the cable body close to the cable end.

4. A cable fixing mechanism according to claim 2, characterized in that: The fixing device comprises: A bottom plate, used for supporting the circuit board; A cover plate, buckled on the bottom plate to cover the circuit board; A fixing seat is installed on the cover plate and is located at a position corresponding to the interface of the circuit board. The first threaded hole is opened on the fixing seat, and the shell can be connected to the first threaded hole through the fastening bolt.

5. A cable fixing mechanism according to claim 4, characterized in that: The fixing seat is provided with a groove extending along the docking direction at a position corresponding to each of the first threaded holes. The shape of the groove matches the shape of the connecting column. The connecting column can be embedded in the groove along the docking direction.

6. A cable fixing mechanism according to claim 1, characterized in that: The limiting portion is located in the housing and at one end of the mounting hole.

7. A cable fixing mechanism according to claim 6, characterized in that: The limiting portion has a first step surface and a second step surface both arranged perpendicular to the docking direction, and the second step surface is closer to the first end than the first step surface. When at least a portion of the cable end is placed in the limiting portion, the spring sheet of the cable end abuts against the inner wall of the limiting portion, and the spring sheet is located on the side of the second step surface close to the first end, and one end of the cable end connected to the cable body abuts against the first step surface.

8. The cable fixing mechanism according to claim 1, characterized in that: A protrusion is provided in the middle of the wire pressing block on the side facing the mounting hole, and the protrusion extends along the docking direction. The protrusion can press the cable body. A connecting bolt is also installed on the wire pressing block. A second threaded hole is provided in the shell corresponding to the position of the connecting bolt, and the connecting bolt can be threadedly matched with the second threaded hole.

9. The cable fixing mechanism according to claim 1, characterized in that: The shell is made of metal.

10. The cable fixing mechanism according to claim 1, characterized in that: The cable is a SFF-8643 interface cable.

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