Cable fixing structure of electric contact element

Abstract

The utility model discloses a cable fixing structure of an electric contact element, which comprises a cable, the electric contact element and a fastener, and is characterized in that the cable is provided with two first contact surfaces; a fixing hole used for installing a cable is formed in the electric contact piece, the fixing hole is sunken outwards in the radial direction to form a groove, two step faces are formed in the groove, and the two step faces are sequentially arranged in the axial direction of the fixing hole. The fastening piece is arranged in the electric contact piece, the lower end of the fastening piece abuts against one side of the cable, a part of the cable is contained in the groove, and the two first contact faces abut against the two step faces respectively. The utility model provides a cable fixing structure of an electric contact element, which is provided with a groove, so that when a cable is subjected to axial tension in a fixing hole of the electric contact element, a fastener can limit the cable in the radial direction, and meanwhile, a step surface of the groove can limit the cable in the axial direction, so that the cable is firmly fixed on the electric contact element.

Description

Technical Field

[0001] The utility model relates to the technical field of cable fixing tools, in particular to an electric contact cable fixing structure. Background Art

[0002] Various electronic devices are generally provided with interfaces for plugging in electrical cables, optical cables and other cables. In order to fix the cables in a specified position to ensure the operation and use of the electronic device, a common method is to use a metal clip to restrain the cables. However, the force used by traditional metal clips to clamp and fix the cables is relatively small, and it is difficult to fix the cables firmly. When excessive tension is applied to the cable, the connection between the cable and the electronic device is easily disconnected, resulting in unstable signal transmission. Utility Model Content

[0003] In view of this, an object of the present invention is to provide an electrical contact cable fixing structure.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An electrical contact cable fixing structure, comprising:

[0006] A cable, wherein the cable is formed with two first contact surfaces;

[0007] An electrical contact, wherein the electrical contact is provided with a fixing hole for installing the cable, the fixing hole is recessed radially outward to form a groove, two step surfaces are formed in the groove, and the two step surfaces are sequentially arranged along the axial direction of the fixing hole;

[0008] A fastener is arranged in the electrical contact, the lower end of the fastener abuts against one side of the cable, a part of the cable is accommodated in the groove, and the two first contact surfaces abut against the two step surfaces respectively.

[0009] In the above-mentioned electrical contact cable fixing structure, a mounting hole is provided on the electrical contact, the mounting hole is arranged along the radial direction of the fixing hole, the mounting hole is connected to the fixing hole, and the fastener is arranged in the mounting hole.

[0010] In the above-mentioned electrical contact cable fixing structure, the groove is arranged directly opposite to the mounting hole.

[0011] In the above-mentioned electrical contact cable fixing structure, the mounting hole is threadedly connected to the fastener.

[0012] The above-mentioned electrical contact cable fixing structure, wherein the cable comprises: a cable conductor and a cable sheath, the cable sheath is sleeved on the outside of the cable conductor, the cable conductor extends into the fixing hole, and the two first contact surfaces are formed on the cable conductor.

[0013] The above-mentioned electrical contact cable fixing structure, wherein the cable conductor has an extension portion and two bent portions, the two bent portions are respectively connected to the two ends of the extension portion, the lower end of the fastener abuts against one side of the extension portion, and the other side of the extension portion abuts against the bottom of the groove, and the two bent portions abut against the two step surfaces respectively along the axial direction.

[0014] In the above-mentioned electrical contact cable fixing structure, second contact surfaces are respectively formed on the inner sides of the two bending portions, and the two second contact surfaces are respectively against the two sides of the fastener.

[0015] Due to the adoption of the above technology, the utility model has the following positive effects compared with the prior art:

[0016] The utility model provides an electrical contact cable fixing structure, which provides a groove so that when the cable is subjected to axial tension in the fixing hole of the electrical contact, the fastener provides radial limitation for the cable, and the stepped surface of the groove can also provide axial limitation for the cable, thereby firmly fixing the cable on the electrical contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cable fixing structure of the electric contact piece of the utility model.

[0018] Figure 2 It is a cross-sectional view of the electrical contact of the utility model.

[0019] Figure 3 It is a partial cross-sectional view of the electric contact cable fixing structure of the utility model.

[0020] Figure 4 It is a force diagram of the cable of the utility model.

[0021] In the accompanying drawings: 1. cable; 2. first contact surface; 3. electrical contact; 4. fixing hole; 5. groove; 6. step surface; 7. fastener; 8. mounting hole; 9. cable conductor; 10. cable sheath; 11. extension portion; 12. bending portion; 13. second contact surface. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention. Figure 1 It is a schematic diagram of the cable fixing structure of the electrical contact of the utility model; Figure 2 It is a cross-sectional view of the electrical contact of the utility model; Figure 3 It is a partial cross-sectional view of the electric contact cable fixing structure of the utility model; Figure 4 This is the force diagram of the cable of the utility model, see Figures 1 to 4As shown, an electrical contact cable fixing structure of a preferred embodiment is shown, comprising: a cable 1, an electrical contact 3 and a fastener 7, wherein the cable 1 is formed with two first contact surfaces 2; a fixing hole 4 for installing the cable 1 is opened on the electrical contact 3, and the inner wall of the fixing hole 4 is recessed radially outward to form a groove 5, and two step surfaces 6 are formed in the groove 5, and the two step surfaces 6 are arranged in sequence along the axial direction of the fixing hole; the fastener 7 is arranged in the electrical contact 3, and the lower end of the fastener 7 is against one side of the cable 1, a part of the cable 1 is accommodated in the groove 5, and the two first contact surfaces 2 are respectively against the two step surfaces 6.

[0023] In a preferred embodiment, a mounting hole 8 is provided on the electrical contact 3 , the mounting hole 8 is arranged along the radial direction of the fixing hole 4 , the mounting hole 8 is communicated with the fixing hole 4 , and the fastener 7 is arranged in the mounting hole 8 .

[0024] In a preferred embodiment, the groove 5 is arranged opposite to the mounting hole 8 .

[0025] In a preferred embodiment, the inner contour of the groove 5 is cylindrical, and further, the axis of the groove 5 is colinear with the axis of the mounting hole 8 .

[0026] In a preferred embodiment, the fastener 7 is a set screw.

[0027] In a preferred embodiment, an internal thread is provided in the mounting hole 8 , and the mounting hole 8 is threadedly connected to the fastener 7 .

[0028] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention.

[0029] The utility model also has the following implementation methods based on the above:

[0030] In a further embodiment of the utility model, the cable 1 includes: a cable conductor 9 and a cable sheath 10, the cable sheath 10 is sleeved on the outside of the cable conductor 9, the cable conductor 9 extends into the fixing hole 4, and two first contact surfaces 2 are formed on the cable conductor 9.

[0031] In a further embodiment of the present invention, see Figure 3 As shown, a portion of the cable conductor 9 is deformed by the downward pressure of the fastener 7 and is bent and accommodated in the groove 5 .

[0032] In a further embodiment of the utility model, the cable conductor 9 has an extension portion 11 and two bent portions 12, the two bent portions 12 are respectively connected to the two ends of the extension portion 11, the lower end of the fastener 7 abuts against one side of the extension portion 11, and the other side of the extension portion 11 abuts against the bottom of the groove 5, and the two bent portions 12 abut against the two step surfaces 6 along the axial direction.

[0033] In a further embodiment of the present invention, the extension portion 11 and the two bent portions 12 are integrally connected and present a "concave" shape.

[0034] In a further embodiment of the present invention, the two first contact surfaces 2 are respectively formed on the outer sides of the two bending portions 12 .

[0035] In a further embodiment of the present invention, two second contact surfaces 14 are respectively formed on the inner sides of the two bending portions 12 , and the two second contact surfaces 14 are respectively against two sides of the fastener 7 .

[0036] In a further embodiment of the present invention, see Figure 4 As shown, the friction coefficient between the cable conductor 9 and the electrical contact 3 is μ, the pressure of the extension 11 indicated by the arrow from the top to the bottom of the fastener 7 is N, the static friction between the extension 11 and the bottom of the groove 5 is F1=uN, and the pressure of the bending portion 12 indicated by the arrow from the lower right to the upper left is F R分1R The pressure indicated by the arrow from upper left to lower right is F R分2R The static friction between the bending portion 12 and the side wall of the groove 5 is F2 = μF R分1R and F3=μF R分2R , then the maximum tensile force that cable 1 can withstand as indicated by the arrow from left to right is approximately F=F1+F2+F3.

[0037] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical contact cable fixing structure, characterized in that: include: A cable, wherein the cable is formed with two first contact surfaces; An electrical contact, wherein the electrical contact is provided with a fixing hole for installing the cable, the fixing hole is recessed radially outward to form a groove, two step surfaces are formed in the groove, and the two step surfaces are sequentially arranged along the axial direction of the fixing hole; A fastener, wherein the fastener is disposed in the electrical contact, the lower end of the fastener abuts against one side of the cable, a portion of the cable is accommodated in the groove, and the two first contact surfaces abut against the two step surfaces respectively; The cable comprises: a cable conductor and a cable sheath, wherein the cable sheath is sleeved on the outside of the cable conductor, the cable conductor extends into the fixing hole, and the two first contact surfaces are formed on the cable conductor.

2. The electrical contact cable fixing structure according to claim 1, characterized in that: The electrical contact piece is provided with a mounting hole, the mounting hole is arranged along the radial direction of the fixing hole, the mounting hole is communicated with the fixing hole, and the fastener is arranged in the mounting hole.

3. The electrical contact cable fixing structure according to claim 2, characterized in that: The groove is arranged opposite to the mounting hole.

4. The electrical contact cable fixing structure according to claim 2, characterized in that: The mounting hole is threadedly connected to the fastener.

5. The electrical contact cable fixing structure according to claim 1, characterized in that: The cable conductor has an extension portion and two bent portions, the two bent portions are respectively connected to the two ends of the extension portion, the lower end of the fastener abuts against one side of the extension portion, and the other side of the extension portion abuts against the bottom of the groove, and the two bent portions abut against the two step surfaces along the axial direction.

6. The electrical contact cable fixing structure according to claim 5, characterized in that: A second contact surface is formed on the inner sides of the two bending portions respectively, and the two second contact surfaces are respectively against two sides of the fastener.

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