Cable fixing structure

Abstract

The utility model discloses a cable fixing structure which is used for connecting a cable with an equipment shell, a through hole is formed in the equipment shell, the cable fixing structure comprises a plastic sleeve, a clamping part, a connecting disc, a column body and a nut, the plastic sleeve is fixed to the cable, and one end of the cable is inserted into the plastic sleeve; the clamping part is embedded in the plastic sleeve and is fixed with the plastic sleeve; the connecting disc is connected with the clamping part and is positioned outside the plastic sleeve; the column body is arranged on the side, away from the clamping part, of the connecting disc, the axial direction of the column body is the same as that of the connecting disc, and the diameter of the column body is matched with the hole diameter of the through hole; the nut is sleeved on the periphery of the column body and is in threaded connection with the column body; the nut is opposite to the connecting disc in the axial direction of the column body; the clamping part, the connecting disc and the column body are all provided with via holes which are communicated with one another, and the multiple via holes form a wire hole for a wire in the cable to penetrate through. The cable and the equipment shell can be fixed more stably, and even if the cable is subjected to external force, it can be guaranteed that the connecting disc and the equipment shell are tightly connected.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electrical connection, in particular to a cable fixing structure. BACKGROUND

[0002] In a communication device, a cable is usually used for energy or signal transmission, and the connection mode of the cable is usually one of the following two modes: one mode is that both ends of the cable can be plugged in and out to connect devices; the other mode is that one end of the cable is fixed to a device, and the other end can be plugged in and out to connect other devices.

[0003] In the above-mentioned scheme in which the cable is fixed to a device, a through hole is arranged on the shell of the device, the cable passes through the through hole and is connected to an electrical structure in the device, a plastic sleeve is fixed to the outer periphery of the cable, an annular groove is arranged on the outer periphery of the plastic sleeve, and the edge of the through hole is clamped into the groove, so that the cable and the shell of the device can be fixed.

[0004] However, in use, the recess on the plastic sleeve is easily separated from the through hole under the action of an external force, so that the connection between the cable and the internal connection of the device is stressed, the connection is unstable, and the use is inconvenient. CONTENT OF THE INVENTION

[0005] The main purpose of the application is to provide a cable fixing structure, which aims to solve the problem that the recess on the plastic sleeve is easily separated from the through hole under the action of an external force, so that the connection between the cable and the internal connection of the device is stressed, the connection is unstable, and the use is inconvenient.

[0006] To achieve the above-mentioned purpose, the application provides a cable fixing structure for connecting a cable and a device shell, a through hole is arranged on the device shell, the cable fixing structure comprises a plastic sleeve, a clamping part, a connecting disc, a column and a nut, the plastic sleeve is fixed to the cable, one end of the cable is inserted into the plastic sleeve; the clamping part is embedded in the plastic sleeve and is fixed to the plastic sleeve; the connecting disc is connected to the clamping part and is located outside the plastic sleeve; the column is arranged on the side of the connecting disc away from the clamping part and has the same axial direction as the connecting disc, wherein the diameter of the column matches the hole diameter of the through hole; the nut is sleeved on the outer periphery of the column and is threadedly connected to the column, the nut and the connecting disc are opposite in the axial direction of the column; wherein the clamping part, the connecting disc and the column are all provided with through holes that are in communication with each other, and a plurality of through holes constitute a wire hole for the wires inside the cable to pass through.

[0007] Optionally, the clamping portion is a prism structure and has the same axial direction as the column; the clamping portion comprises a first structure portion, a second structure portion and a third structure portion connected in sequence in the axial direction of the column; the third structure portion is connected with the connecting disc; the radial dimension of the second structure portion is smaller than the radial dimension of the first structure portion; the plastic sleeve is attached to the outer periphery of the first structure portion, the outer periphery of the second structure portion and the outer periphery of the third structure portion.

[0008] Optionally, the clamping portion is a hexagonal prism.

[0009] Optionally, at the position where the plastic sleeve is attached to the clamping portion, the ratio of the thickness of the plastic sleeve to the outer diameter of the plastic sleeve is a, and 0.15 < a < 0.3.

[0010] Optionally, the cable fixing structure further comprises a sealing ring, which is arranged on the side of the connecting disc facing the column and has the same axial direction as the column.

[0011] Optionally, an annular accommodating groove is formed on the side of the connecting disc facing the column and surrounding the axial direction of the connecting disc, and the accommodating groove is located at the periphery of the column; the sealing ring is arranged in the accommodating groove.

[0012] Optionally, in the axial direction of the connecting disc, the thickness of the sealing ring is a, and the depth of the accommodating groove is b, and a > b.

[0013] Optionally, the extension direction of the wire hole is the same as the axial direction of the column.

[0014] Optionally, the side of the connecting disc facing the clamping portion is a projection side, and the projection of the clamping portion on the projection side in the axial direction of the connecting disc is located within the inner periphery of the edge of the projection side.

[0015] Optionally, the side of the connecting disc away from the column is attached to the end of the plastic sleeve.

[0016] The cable fixing structure provided in the embodiments of the present application can fix the cable and the equipment shell more stably, and ensure that the connecting disc is tightly connected with the equipment shell even if the cable is subjected to external force. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the prior art and the present application, the drawings needed in the description of the prior art and the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0018] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the present application. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0019] Figure 1 Part structure section view schematic diagram of a cable fixing structure provided by the embodiment of the present application;

[0020] Figure 2 Structure schematic diagram of the connecting disc of the embodiment of the present application;

[0021] Figure 3 Structure schematic diagram of the embodiment of the present application; Figure 2 Sectional view of the embodiment of the present application;

[0022] Figure 4 Structure schematic diagram of another view of the embodiment of the present application; Figure 2

[0023] In the figure: 1, cable; 2, equipment shell; 21, through hole; 3, plastic sleeve; 4, clamping part; 41, first structure part; 42, second structure part; 43, third structure part; 5, connecting disc; 51, accommodating groove; 6, column; 7, nut; 8, wire hole.

[0024] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] ​It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications will also change accordingly.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing", etc. should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements or mutual action relationship of two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In addition, if the present application embodiments involve "first", "second", etc. description, the "first", "second", etc. description is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0029] The present application will be described in detail below with reference to the drawings and embodiments.

[0030] Figure 1 Part of the structure section view of a cable fixing structure provided in the embodiments of the present application; Figure 2 The structure schematic view of the connecting disc in the embodiments of the present application; Figure 3 The structure schematic view of the connecting disc in the embodiments of the present application; Figure 2 The section view of the embodiments in the present application; Figure 4 The structure schematic view of the connecting disc in the embodiments of the present application; Figure 2 The structure schematic view of the connecting disc in the embodiments of the present application;

[0031] Reference Figures 1 to 4This application provides a cable fixing structure for connecting a cable 1 to a device housing 2. The device housing 2 has a through hole 21. The cable fixing structure may include a plastic sleeve 3, a snap-fit ​​part 4, a connecting plate 5, a column 6, and a nut 7. The plastic sleeve 3 is fixed to the cable 1, with one end of the cable 1 inserted into the plastic sleeve 3. The snap-fit ​​part 4 is embedded in the plastic sleeve 3 and fixed to it. The connecting plate 5 is connected to the snap-fit ​​part 4 and located outside the plastic sleeve 3. The column 6 is located on the side of the connecting plate 5 away from the snap-fit ​​part 4 and its axial direction is the same as that of the connecting plate 5. The diameter of the column 6 matches the diameter of the through hole 21. The nut 7 is sleeved on the outer circumference of the column 6 and threadedly connected to it. The nut 7 and the connecting plate 5 are opposite each other in the axial direction of the column 6. The snap-fit ​​part 4, the connecting plate 5, and the column 6 are all provided with interconnected through holes. Multiple through holes form a wire hole 8 for the wires inside the cable 1 to pass through.

[0032] The cable fixing structure proposed in this application involves unscrewing the nut 7 from the column 6 during connection, and having the column 6 pass through the through hole 21 on the equipment housing 2, so that the connecting plate 5 abuts against the equipment housing 2. Then, the nut 7 is screwed from the side of the column 6 away from the connecting plate 5 to the outer circumference of the column 6 and continuously tightened until the nut 7 and the connecting plate 5 clamp the equipment housing 2. In this way, the cable 1 can be fixed to the equipment housing 2 and the fixation is more stable. Even if the cable 1 is subjected to external force, the connection between the connecting plate 5 and the equipment housing 2 can be guaranteed to be tight.

[0033] The multiple vias forming a wire hole 8 means that multiple interconnected vias form a larger wire hole 8, through which the wires inside the cable 1 can pass through the plastic sleeve 3, the wire hole 8, and the through hole 21 to enter the equipment and connect with the electrical structure inside the equipment.

[0034] It should be understood that the nut 7 and the connecting disc 5 are opposite each other in the axial direction of the column 6. It can be understood that when the nut 7 approaches the connecting disc 5 along the axial direction of the column 6, the nut 7 will form a compressive force between the nut 7 and the connecting disc 5, so that the nut 7 and the connecting disc 5 can clamp the equipment housing 2.

[0035] Furthermore, the diameter of the column 6 matches the diameter of the through hole 21; it can be the same as the diameter of the through hole 21 or slightly smaller. Thus, when the column 6 is inserted into the through hole 21, and the nut 7 and connecting disc 5 clamp the equipment housing 2, the column 6 is almost immobile within the through hole 21, resulting in a more stable connection and better cable 1 fixation.

[0036] In addition, such as Figure 1 As shown, the connecting plate 5 and the cable 1 are located at both ends of the plastic sleeve 3.

[0037] refer to Figure 1 and Figure 4In the example embodiment, the clamping portion 4 is a prism structure and has the same axial direction as the cylinder 6; the clamping portion 4 comprises a first structure portion 41, a second structure portion 42 and a third structure portion 43 connected in sequence in the axial direction of the cylinder 6; the third structure portion 43 is connected with the connecting disc 5; the radial dimension of the second structure portion 42 is smaller than that of the first structure portion 42; the plastic sleeve 3 is attached to the outer periphery of the first structure portion 41, the second structure portion 42 and the third structure portion 43.

[0038] Specifically, as shown in Figure 1 With Figure 4 When the clamping portion 4 is a prism structure and has the same axial direction as the cylinder 6, and the plastic sleeve 3 is attached to the outer periphery of the clamping portion 4, the freedom of the clamping portion 4 rotating around its own axial direction is locked, so that the clamping portion 4 cannot rotate around its own axial direction, preventing the clamping portion 4 from slipping between the plastic sleeve 3 during use, ensuring that the operation of the threaded nut 7 connecting or separating the cable 1 and the equipment shell 2 will not be affected.

[0039] In addition, as shown in Figure 1 The first structure portion 41 and the third structure portion 43 are both prism structures, the second structure portion 42 is a cylindrical structure, and the radial dimension of the second structure portion 42 is smaller than that of the first structure portion 42, so that part of the structure of the plastic sleeve 3 will be clamped between the first structure portion 41 and the third structure portion 43, and located at the outer periphery of the second structure portion 42. When the cable 1 is subjected to tension, the plastic sleeve 3 is in contact with the first structure portion 41 and cannot be pulled away from the clamping portion 4, so that the internal wires of the cable 1 are almost not subjected to force, ensuring the stability of the connection between the wires and the internal electrical structure of the equipment, and further improving the fixing effect of the cable 1 and the equipment shell 2; the three structure portions all have through holes that are in communication with each other.

[0040] Meanwhile, the clamping portion 4 can be a whole prism structure, and the above three structure portions can be formed by machining a ring-shaped limiting groove around the outer periphery of the clamping portion 4 in its own axial direction, so as to finally realize the position fixation between the clamping portion 4 and the plastic sleeve 3, which is simple to process and has low cost. The plastic sleeve 3 can be formed by injection molding.

[0041] It should be understood that the clamping portion 4 being a prism structure means that the first structure portion 41 and the third structure portion 43 are prism structures, and the second structure portion 42 formed after machining the limiting groove is a cylindrical structure.

[0042] Reference Figure 4In the example embodiment, the clamping portion 4 is a hexagonal prism; it should be understood that the clamping portion 4 can also be a triangular prism, a quadrangular prism, a pentagonal prism, a heptagonal prism, etc., all of which can prevent relative rotation between the clamping portion 4 and the plastic sleeve 3 about the axis of the column 6; in the preferred embodiment of the present application, the clamping portion 4 can be a hexagonal prism, so that the clamping portion 4 is easy to process and has a better anti-rotation effect.

[0043] Reference Figure 1 In the example embodiment, the ratio of the thickness of the plastic sleeve 3 to the outer diameter of the plastic sleeve 3 at the position where the plastic sleeve 3 is attached to the clamping portion 4 is a, and 0.15 < a < 0.3, for example, it can be 0.15, 0.2, 0.25, 0.3, etc.

[0044] Specifically, the plastic sleeve 3 formed by injection molding is prone to shrinkage if the thickness is too large, resulting in defects in appearance and practicability of the product, and if the thickness is too small, it is easy to separate from the attached clamping portion 4, so the ratio of the thickness of the plastic sleeve 3 to the outer diameter of the plastic sleeve 3 needs to be within the above range, so that the shrinkage of the finally formed plastic sleeve 3 is small, and the connection between the plastic sleeve 3 and the clamping portion 4 is tight, thereby ensuring the fixing effect of the plastic sleeve 3 and the clamping portion 4.

[0045] In the example embodiment, the extension direction of the wire hole 8 is the same as the axial direction of the column 6; one end of the wire hole 8 is located on the side of the clamping portion 4 away from the connecting disc 5, and the other end is located on the side of the column 6 away from the connecting disc 5.

[0046] Specifically, the wire hole 8 is thus arranged to allow the wires in the cable 1 to enter and pass through the wire hole 8 to reach the inside of the equipment.

[0047] It should be understood that the through holes on the clamping portion 4, the connecting disc 5 and the column 6 are coaxially arranged, and the clamping portion 4, the connecting disc 5 and the column 6 are connected in sequence, so that the three through holes form the above-mentioned wire hole 8.

[0048] Reference Figure 1 In the example embodiment, the side of the connecting disc 5 facing the clamping portion 4 is the projection side, and the projection of the clamping portion 4 on the projection side along the axial direction of the connecting disc 5 is located within the inner periphery of the edge of the projection side; the side of the connecting disc 5 away from the column 6 is attached to the end of the plastic sleeve 3.

[0049] As Figure 1 shown, the connecting disc 5 thus protects the end of the plastic sleeve 3 to some extent, preventing moisture or dust and other impurities from entering between the plastic sleeve 3 and the clamping portion 4 during long-term use, thereby improving the service life of the cable fixing structure.

[0050] In addition, the outer diameter of the connecting disc 5 can be the same as the outer diameter of the plastic sleeve 3, so that the overall cable fixing structure is more aesthetically pleasing.

[0051] In the example embodiment, the cable fixing structure can further comprise a sealing ring, which is arranged on the side of the connecting disc 5 facing the column 6 and has the same axial direction as the column 6.

[0052] Specifically, when the nut 7 and the connecting disc 5 clamp the device shell 2, the sealing ring is arranged between the connecting disc 5 and the device shell 2, and the sealing ring is pressed by the connecting disc 5 and the device shell 2 to form a seal, thereby sealing the connection area between the cable fixing structure and the device shell 2 and achieving the waterproof effect.

[0053] Reference Figure 3 In the example embodiment, the side of the connecting disc 5 facing the column 6 is provided with an annular accommodating groove 51 around the axial direction of the connecting disc 5, and the accommodating groove 51 is located at the periphery of the column 6; the sealing ring is arranged in the accommodating groove 51.

[0054] Specifically, after the sealing ring is arranged in the accommodating groove 51, the nut 7 is tightened to clamp the device shell 2 by the nut 7 and the connecting disc 5, and the sealing ring is pressed into the accommodating groove 51, thereby sealing the connection area between the cable fixing structure and the device shell 2 and achieving the waterproof effect; at the same time, the sealing ring is arranged in the accommodating groove 51, so that the cable fixing structure is more beautiful and neat as a whole, and in addition, the sealing ring can be pasted into the accommodating groove 51, which can effectively prevent the sealing ring from being lost when the cable fixing structure is disassembled.

[0055] Further, in the axial direction of the connecting disc 5, the thickness of the sealing ring is a, and the depth of the accommodating groove 51 is b, and a > b. In this way, when the sealing ring is arranged in the accommodating groove 51, the sealing ring extends out of the accommodating groove 51 in the axial direction of the column 6, so that when the nut 7 and the connecting disc 5 clamp the device shell 2, the sealing ring is pressed into the accommodating groove 51, and the sealing effect of the sealing ring is good.

[0056] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cable fixing structure characterized by comprising: A cable fixing structure for connecting a cable (1) with a device shell (2) provided with a through hole (21) includes: a plastic sleeve (3) fixed with the cable (1), one end of the cable (1) inserted into the plastic sleeve (3); a clamping portion (4) embedded in the plastic sleeve (3) and fixed with the plastic sleeve (3); a connecting disc (5) connected with the clamping portion (4) and located outside the plastic sleeve (3); a column (6) provided on a side of the connecting disc (5) away from the clamping portion (4) and having the same axial direction as the connecting disc (5), wherein the diameter of the column (6) matches the hole diameter of the through hole (21); a nut (7) sleeved on the outer periphery of the column (6) and threadedly connected with the column (6), the nut (7) opposite to the connecting disc (5) in the axial direction of the column (6); wherein the clamping portion (4), the connecting disc (5) and the column (6) are all provided with through holes in communication with each other, and a plurality of the through holes form a wire hole (8) for the wire inside the cable (1) to pass through.

2. The cable securing structure of claim 1, wherein, The clamping portion (4) is a prismatic structure and has the same axial direction as the column (6); The clamping portion (4) includes a first structure portion (41), a second structure portion (42) and a third structure portion (43) connected in sequence in the axial direction of the column (6); wherein the third structure portion (43) is connected with the connecting disc (5); The radial dimension of the second structure portion (42) is smaller than that of the first structure portion (41); The plastic sleeve (3) is attached to the outer periphery of the first structure portion (41), the outer periphery of the second structure portion (42) and the outer periphery of the third structure portion (43).

3. The cable securing structure of claim 2, wherein, The clamping portion (4) is a hexagonal prism.

4. The cable securing structure of claim 2, wherein At the position where the plastic sleeve (3) is attached to the clamping portion (4), the ratio of the thickness of the plastic sleeve (3) to the outer diameter of the plastic sleeve (3) is a, and 0.15 5. The cable securing structure of claim 1, wherein, The cable fixing structure further includes: a sealing ring provided on a side of the connecting disc (5) facing the column (6) and having the same axial direction as the column (6).

6. The cable securing structure of claim 5, wherein, An annular accommodating groove (51) is formed on the side of the connecting disc (5) facing the column (6) and surrounding the axial direction of the connecting disc (5), and the accommodating groove (51) is located at the periphery of the column (6); The sealing ring is arranged in the accommodating groove (51).

7. The cable securing structure of claim 6, wherein, In the axial direction of the connecting disc (5), the thickness of the sealing ring is a, and the depth of the accommodating groove (51) is b, and a > b.

8. The cable securing structure of claim 1, wherein, The extending direction of the wire hole (8) is the same as the axial direction of the column (6).

9. The cable securing structure of claim 1, wherein, The side of the connecting disc (5) facing the clamping portion (4) is a projection side, and the projection of the clamping portion (4) on the projection side in the axial direction of the connecting disc (5) is located within the edge inner periphery of the projection side.

10. The cable securing structure of claim 9, wherein, The side of the connecting disc (5) away from the column (6) is attached to the end of the plastic sleeve (3).

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