CN223612960U - A cable fixing structure - Google Patents

Abstract

The application discloses a cable fixing structure which is used for connecting a cable with an equipment shell, wherein a through hole is formed in the equipment shell, the cable fixing structure comprises a plastic sleeve, a clamping part, a connecting disc, a cylinder and a nut, one end of the cable is inserted into the plastic sleeve, the clamping part is embedded into 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 cylinder is arranged on one side of the connecting disc, which is away from the clamping part, and the axial direction of the connecting disc is the same as the axial direction of the connecting disc, the diameter of the cylinder is matched with the diameter of the through hole, the nut is sheathed on the periphery of the cylinder and is in threaded connection with the cylinder, the nut is opposite to the connecting disc in the axial direction of the cylinder, and through holes which are mutually communicated are formed in the clamping part, the connecting disc and the cylinder, and a plurality of through holes form wire holes for wires inside the cable to pass through. The application can fix the cable and the equipment shell more stably, and can ensure that the connection disc is tightly connected with the equipment shell even if the cable is subjected to external force.

Description

Cable fixing structure

Technical Field

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

Background

In a communication device, energy or signal transmission is performed by using a common cable, and two connection modes of the cable are generally adopted, wherein one connection mode is that two ends of the cable can be plugged and pulled to connect devices, and the other connection mode is that one end of the cable is fixed with one device, and the other end of the cable can be plugged and pulled to connect other devices.

In the scheme that the cable is fixed with equipment, a through hole is formed in the shell of the equipment, the cable passes through the through hole and is connected with an electrical structure in the equipment, a plastic sleeve is fixed on the periphery of the cable, an annular groove is formed in the periphery of the plastic sleeve, and the edge of the through hole is clamped into the groove, so that the cable and the equipment shell can be fixed.

However, when the cable is used, the cable is subjected to external force to easily drive the grooves on the plastic sleeve to be separated from the through holes, so that the connection part between the cable and the inside of the equipment is stressed, the connection is unstable, and the use is inconvenient.

Disclosure of utility model

The application mainly aims to provide a cable fixing structure, which aims to solve the problems that a cable is stressed at the joint between the cable and the inside of equipment, the connection is unstable and the use is inconvenient because the cable is easy to drive a groove on a plastic sleeve to be separated from a through hole under the action of external force.

The application provides a cable fixing structure for connecting a cable with an equipment shell, wherein the equipment shell is provided with a through hole, the cable fixing structure comprises a plastic sleeve, a clamping part, a connecting disc, a cylinder and a nut, the plastic sleeve is fixed with the cable, one end of the cable is inserted into the plastic sleeve, the clamping part is embedded into 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 cylinder is arranged on one side of the connecting disc, which is away from the clamping part, and the axial direction of the connecting disc is the same as the axial direction of the connecting disc, the diameter of the cylinder is matched with the aperture of the through hole, the nut is sleeved on the periphery of the cylinder and is in threaded connection with the cylinder, the nut is opposite to the connecting disc in the axial direction of the cylinder, and a plurality of through holes which are mutually communicated are formed in the clamping part, the connecting disc and the cylinder are all provided with wire holes for wires inside the cable to pass through.

Optionally, the clamping part is of a prismatic structure and has the same axial direction as that of the column body; the clamping part comprises a first structure part, a second structure part and a third structure part which are sequentially connected in the axial direction of the column body, wherein the third structure part is connected with the connecting disc, the radial dimension of the second structure part is smaller than that of the first structure part, and the plastic sleeve is attached to the periphery of the first structure part, the periphery of the second structure part and the periphery of the third structure part.

Optionally, the clamping portion is a hexagonal prism.

Optionally, at the position where the plastic sleeve is attached to the clamping part, 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

Optionally, the cable fixing structure further includes a sealing ring, and the sealing ring is disposed on a side of the connecting disc facing the cylinder and has an axial direction identical to an axial direction of the cylinder.

Optionally, an annular accommodating groove is formed around the axial direction of the connecting disc on one side of the connecting disc facing the cylinder, the accommodating groove is located at the periphery of the cylinder, and the sealing ring is arranged in the accommodating groove.

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

Optionally, the extending direction of the wire hole is the same as the axial direction of the column body.

Optionally, a side of the connection pad facing the clamping portion is a projection side, and a projection of the clamping portion on the projection side along an axial direction of the connection pad is located at an inner periphery of an edge of the projection side.

Optionally, one side of the connecting disc, which is away from the column body, is attached to the end part of the plastic sleeve.

According to the cable fixing structure provided by the embodiment of the application, the nut is unscrewed from the cylinder during connection, the cylinder penetrates through the through hole on the equipment shell, so that the connecting disc is abutted against the equipment shell, and then the nut is screwed to the periphery of the cylinder from one side of the cylinder, which is far away from the connecting disc, until the nut and the connecting disc clamp the equipment shell, so that the cable and the equipment shell can be fixed and more stably, and even if the cable is subjected to external force, the connection between the connecting disc and the equipment shell can be ensured to be tight.

Drawings

In order to more clearly illustrate the prior art and the present utility model, the drawings used in the description of the prior art and the embodiments of the present utility model will be briefly described. It will be apparent to those skilled in the art that the drawings in the following description are merely exemplary and that other drawings may be derived from the drawings provided without the inventive effort to those skilled in the art.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, for example, modifications, variations in proportions, or otherwise, used in the practice of the utility model, which are particularly adapted to specific environments without departing from the spirit and scope of the utility model.

Fig. 1 is a schematic cross-sectional view of a part of a cable fixing structure according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a structure at a connection pad according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of the embodiment of FIG. 2;

Fig. 4 is a schematic diagram of the embodiment of fig. 2 from another perspective.

1, A cable; 2, an equipment shell, 21, a through hole, 3, a plastic sleeve, 4, a clamping part, 41, a first structural part, 42, a second structural part, 43, a third structural part, 5, a connecting disc, 51, a containing groove, 6, a column, 7, a nut, 8 and a wire hole.

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed" and the like are to be construed broadly, and for example, "fixed" may be fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, and may be in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The present application will be described in detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic sectional view of a part of a cable fixing structure according to an embodiment of the present application, fig. 2 is a schematic structural view of a connection disc according to an embodiment of the present application, fig. 3 is a sectional view of the embodiment of fig. 2, and fig. 4 is a schematic structural view of another view of the embodiment of fig. 2.

Referring to fig. 1-4, an embodiment of the present application provides a cable fixing structure for connecting a cable 1 with an equipment housing 2, wherein a through hole 21 is provided on the equipment housing 2, the cable fixing structure may include a plastic sleeve 3, a clamping portion 4, a connecting disc 5, a post 6 and a nut 7, the plastic sleeve 3 is fixed with the cable 1, one end of the cable 1 is inserted into the plastic sleeve 3, the clamping portion 4 is embedded into the plastic sleeve 3 and fixed with the plastic sleeve 3, the connecting disc 5 is connected with the clamping portion 4 and is located outside the plastic sleeve 3, a post 6 is disposed on one side of the connecting disc 5 facing away from the clamping portion 4 and axially is the same as the axial direction of the connecting disc 5, wherein the diameter of the post 6 is matched with the aperture of the through hole 21, the nut 7 is sleeved on the periphery of the post 6 and is in threaded connection with the post 6, the nut 7 is opposite to the connecting disc 5 in the axial direction of the post 6, wherein the clamping portion 4, the connecting disc 5 and the post 6 are provided with mutually communicated through holes, and the plurality of through holes form a wire hole 8 for the wires inside the cable 1 to pass through.

According to the cable fixing structure provided by the embodiment of the application, the nut 7 is unscrewed from the column body 6 during connection, the column body 6 passes through the through hole 21 in the equipment shell 2, so that the connecting disc 5 is abutted against the equipment shell 2, and then the nut 7 is screwed to the periphery of the column body 6 from one side of the column body 6 far away from the connecting disc 5 until the nut 7 and the connecting disc 5 clamp the equipment shell 2, so that the cable 1 and the equipment shell 2 are fixed and are more stable, and even if the cable 1 is subjected to external force, the connection between the connecting disc 5 and the equipment shell 2 can be ensured to be tight.

The plurality of through holes forming the wire hole 8 means that a plurality of through holes which are mutually communicated form a larger wire hole 8, and wires inside the cable 1 pass through the plastic sleeve 3 and can enter the inside of the equipment to be connected with electrical structures inside the equipment through the wire hole 8 and the through hole 21.

It should be understood that the nut 7 is opposite to the connection disc 5 in the axial direction of the cylinder 6, and it is understood that when the nut 7 approaches the connection disc 5 in the axial direction of the cylinder 6, a pressing force is formed between the nut 7 and the connection disc 5, so that the nut 7 and the connection disc 5 clamp the device housing 2.

Further, the diameter of the column 6 matches the aperture of the through hole 21, which may be the same as the aperture of the through hole 21 or slightly smaller than the aperture of the through hole 21. So when cylinder 6 inserts through-hole 21, and nut 7 and connection pad 5 press from both sides tight back with equipment shell 2, cylinder 6 can't shake hardly in through-hole 21 for connect more stably, cable 1 fixed effect is better.

In addition, as shown in fig. 1, the connection pads 5 and the cable 1 are respectively located at both ends of the plastic cover 3.

Referring to fig. 1 and 4, in an exemplary embodiment, the clamping portion 4 is of a prismatic structure and has an axial direction identical to that of the cylinder 6, the clamping portion 4 includes a first structure portion 41, a second structure portion 42, and a third structure portion 43 sequentially connected in the axial direction of the cylinder 6, wherein the third structure portion 43 is connected with the connection disc 5, a radial dimension of the second structure portion 42 is smaller than a radial dimension of the first structure portion 42, and the plastic cover 3 is attached to an outer circumference of the first structure portion 41, an outer circumference of the second structure portion 42, and an outer circumference of the third structure portion 43.

Specifically, as shown in fig. 1 and 4, when the clamping portion 4 is of a prismatic structure and the axial direction is the same as the axial direction of the column body 6, and the plastic sleeve 3 is attached to the periphery of the clamping portion 4, the degree of freedom of the clamping portion 4 rotating around the axial direction of the clamping portion is locked, so that the clamping portion 4 cannot rotate around the axial direction of the clamping portion, the situation that sliding wires occur between the clamping portion 4 and the plastic sleeve 3 in the using process is prevented, and the operation of connecting or separating the cable 1 and the equipment housing 2 by screwing the nut 7 is guaranteed not to be influenced.

In addition, as shown in fig. 1, the first structure portion 41 and the third structure portion 43 are both prismatic structures, the second structure portion 42 is cylindrical, and the radial dimension of the second structure portion 42 is smaller than that of the first structure portion 42, so that a part of the structure of the plastic sleeve 3 is clamped between the first structure portion 41 and the third structure portion 43 and is located at the periphery of the second structure portion 42, when the cable 1 is pulled, 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 hardly stressed, the connection stability of the wires and the internal electrical structure of the device is ensured, and the fixing effect of the cable 1 and the device housing 2 is better, wherein all three structure portions are provided with mutually communicated through holes.

Meanwhile, the clamping part 4 can be of an integral prismatic structure, the three structural parts are machined, the three structural parts can be formed only by axially forming annular limiting grooves around the periphery of the clamping part 4, and finally, the position fixing between the clamping part 4 and the plastic sleeve 3 is realized, so that the machining is simple and convenient, and the cost is low. Wherein the plastic sleeve 3 can be formed by injection molding.

It should be understood that the clamping portion 4 has a prismatic structure, that is, the first structure portion 41 and the third structure portion 43 have prismatic structures, and the second structure portion 42 formed after the limit groove is machined has a cylindrical structure.

Referring to fig. 4, in the exemplary embodiment, the clamping portion 4 is a hexagonal prism, it should be understood that the clamping portion 4 may also be a triangular prism, a quadrangular prism, a pentagonal prism, a heptagonal prism, etc. that can prevent relative rotation between the clamping portion 4 and the plastic sleeve 3 around the axial direction of the cylinder 6, and in the preferred embodiment of the present application, the clamping portion 4 may be a hexagonal prism, so that the clamping portion 4 is convenient for processing and has better rotation preventing effect.

Referring to fig. 1, in an exemplary embodiment, at a position where the plastic sleeve 3 is attached to the clamping portion 4, a ratio of a thickness of the plastic sleeve 3 to an outer diameter of the plastic sleeve 3 is a, and 0.15< a <0.3, for example, 0.15,0.2,0.25,0.3 or the like may be mentioned.

Specifically, the plastic sleeve 3 formed by injection molding is too thick and easy to shrink, so that flaws appear on the appearance and practicality of the product, the thickness is too small and is easy to separate from the joint part 4 of the joint, therefore, the ratio of the thickness of the plastic sleeve 3 to the outer diameter of the plastic sleeve 3 needs to be ensured to be a within the range, the shrinkage degree of the finally formed plastic sleeve 3 can be ensured to be smaller, and the plastic sleeve 3 is tightly connected with the joint part 4, so that the fixing effect of the plastic sleeve 3 and the joint part 4 is ensured.

In an exemplary embodiment, the wire hole 8 extends in the same direction as the axial direction of the cylinder 6, and one end of the wire hole 8 is located on the side of the clamping portion 4 facing away from the connection pad 5, and the other end is located on the side of the cylinder 6 facing away from the connection pad 5.

In particular, the wire holes 8 are arranged so that wires within the cable 1 enter and pass through the wire holes 8 to reach the interior of the device.

It should be understood that the via holes on the clamping portion 4, the connecting disc 5 and the column body 6 are all coaxially arranged, and the clamping portion 4, the connecting disc 5 and the column body 6 are sequentially connected, so that the wire hole 8 can be formed by three via holes.

Referring to fig. 1, in an exemplary embodiment, a side of the connection pad 5 facing the clamping portion 4 is a projection side, a projection of the clamping portion 4 on the projection side along an axial direction of the connection pad 5 is located at an inner periphery of an edge of the projection side, and a side of the connection pad 5 facing away from the column 6 is attached to an end portion of the plastic sleeve 3.

As shown in fig. 1, the connecting disc 5 protects the end of the plastic sleeve 3 to a certain extent, prevents moisture, dust and other impurities from entering between the plastic sleeve 3 and the clamping part 4 after long-term use, and prolongs the service life of the cable fixing structure.

In addition, the outer diameter of the connecting disc 5 and the outer diameter of the plastic sleeve 3 can be the same, so that the whole cable fixing structure is more attractive.

In an exemplary embodiment, the cable fixing structure may further include a sealing ring disposed at a side of the connection pad 5 facing the cylinder 6 and having the same axial direction as the cylinder 6.

Specifically, after the nut 7 and the connecting disc 5 clamp the equipment housing 2, the sealing ring is positioned between the connecting disc 5 and the equipment housing 2, and the sealing ring is extruded by the connecting disc 5 and the equipment housing 2 to form a seal, so that the connection area of the cable fixing structure and the equipment housing 2 is sealed, and the waterproof effect is achieved.

Referring to fig. 3, in an exemplary embodiment, a side of the connection disc 5 facing the cylinder 6 is circumferentially provided with an annular receiving groove 51 around an axial direction of the connection disc 5, the receiving groove 51 is located at a periphery of the cylinder 6, and a sealing ring is disposed in the receiving groove 51.

Specifically, after the sealing ring is arranged in the accommodating groove 51, the nut 7 is screwed down to enable the nut 7 and the connecting disc 5 to clamp the equipment shell 2, the sealing ring is extruded into the accommodating groove 51, so that the connection area of the cable fixing structure and the equipment shell 2 is sealed, and a waterproof effect is achieved, meanwhile, the sealing ring is arranged in the accommodating groove 51, so that the whole cable fixing structure is more attractive and tidier, in addition, the sealing ring can be adhered into the accommodating groove 51, and the sealing ring can be effectively prevented from being lost when the cable fixing structure is disassembled.

Further, in the axial direction of the connection disc 5, the thickness of the seal ring is a, the depth of the accommodation groove 51 is b, and a > b. When the sealing ring is positioned in the accommodating groove 51, the sealing ring extends out of the accommodating groove 51 in the axial direction of the cylinder 6, so that the sealing ring is extruded into the accommodating groove 51 when the nut 7 and the connecting disc 5 clamp the equipment shell 2, and the sealing effect of the sealing ring is good.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. A cable fixing structure, characterized in that it is used to connect a cable (1) to a device housing (2), wherein the device housing (2) is provided with a through hole (21), and the cable fixing structure comprises: A plastic sleeve (3) is fixed to the cable (1), and one end of the cable (1) is inserted into the plastic sleeve (3); The snap-fit part (4) is embedded in the plastic sleeve (3) and fixed to the plastic sleeve (3); The connecting plate (5) is connected to the snap-fit part (4) and located outside the plastic sleeve (3); A column (6) is disposed 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), wherein the diameter of the column (6) matches the diameter of the through hole (21); Nut (7) is fitted around the outer periphery of the column (6) and threadedly connected to the column (6). The nut (7) and the connecting disc (5) are axially opposite to each other on the column (6). The snap-fit part (4), the connecting plate (5) and the column (6) are all provided with interconnected through holes, and the multiple through holes form a wire hole (8) for the wires inside the cable (1) to pass through. 2. The cable fixing structure as described in claim 1, wherein the snap-fit part (4) is a prismatic structure and its axial direction is the same as that of the column (6); The snap-fit part (4) includes a first structural part (41), a second structural part (42) and a third structural part (43) connected sequentially in the axial direction of the column (6); The third structural part (43) is connected to the connecting disk (5); The radial dimension of the second structural part (42) is smaller than the radial dimension of the first structural part (41); The plastic sleeve (3) is fitted to the outer periphery of the first structural part (41), the outer periphery of the second structural part (42), and the outer periphery of the third structural part (43). 3. The cable fixing structure as described in claim 2, wherein the snap-fit part (4) is a hexagonal prism. 4. The cable fixing structure as described in claim 2, characterized in that, at the position where the plastic sleeve (3) and the snap-fit part (4) are in contact, the ratio of the thickness of the plastic sleeve (3) to the outer diameter of the plastic sleeve (3) is a, and 0.15 < a < 0.3. 5. The cable fixing structure as described in claim 1, characterized in that the cable fixing structure further comprises: A sealing ring is disposed on the side of the connecting plate (5) facing the column (6) and its axial direction is the same as that of the column (6). 6. The cable fixing structure as described in claim 5, characterized in that an annular receiving groove (51) is provided around the side of the connecting disc (5) facing the column (6) along the axial direction of the connecting disc (5), and the receiving groove (51) is located on the periphery of the column (6). The sealing ring is disposed in the receiving groove (51). 7. The cable fixing structure as described in claim 6, characterized in that, in the axial direction of the connecting disc (5), the thickness of the sealing ring is a, the depth of the receiving groove (51) is b, and a > b. 8. The cable fixing structure as described in 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 fixing structure as claimed in claim 1, characterized in that the side of the connecting disc (5) facing the snap-fit part (4) is the projection side, and the projection of the snap-fit part (4) on the projection side along the axial direction of the connecting disc (5) is located on the inner periphery of the edge of the projection side. 10. The cable fixing structure as described in claim 9, wherein the side of the connecting disc (5) facing away from the column (6) is fitted with the end of the plastic sleeve (3).