Right angle cable plug shield

Abstract

The utility model belongs to cable plug field, specifically disclose right angle formula cable plug shield case, including the sleeve body for the cable core passes, the sleeve body includes mutually perpendicular and the intercommunication first section and second section, the inner wall of first section is established with the expansion chamber of the port opposite second section, the side of expansion chamber away from the port of first section extends to the inner wall of second section and forms first inclined part, and first inclined part is used for guiding cable core to enter expansion chamber, the side of expansion chamber near the port of first section extends to the inner wall of first section and forms second inclined part, and second inclined part is used for guiding cable core to follow the axial wire of first section, this scheme has realized the length of the cable plug in the direction of insertion to avoid increasing, also avoid the cable in shield case because of the overall or local excessive bending and lead to the deformation of the cable inside conductor, in addition still avoid the cable and be damaged because of excessive deformation, to eliminate the related electric safety hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of cable plugs, and in particular to a right-angle cable plug shield. Background Technology

[0002] Cables are common wires used for transmitting electrical signals, and they mainly consist of two parts: the plug and the cable itself. The cable itself is primarily composed of several cores, a grounding shield (specifically a copper mesh shield), an outer layer, and other layers. The cores together form the cable core, which is protected from damage by the outer layer and from electromagnetic interference by the grounding shield, giving the cable good electromagnetic interference resistance. The plug, as the other major part of the cable, lacks a grounding shield. To achieve similar electromagnetic interference resistance, a conductive shield is often installed inside the plug, electrically connected to the grounding shield. The cable core passes through this shield, which blocks electromagnetic interference, thus providing it with good electromagnetic interference resistance as well.

[0003] In practical use, plugs come in various specifications and structures depending on different application scenarios and performance requirements. Right-angle plugs are a common and widely used type of cable plug. Right-angle plugs save on the length of space required for installation in the insertion direction, allowing them to be used in confined spaces and other practical environments. Correspondingly, the shield inside a right-angle plug is also arranged at a right angle along its axis. Furthermore, due to dimensional limitations on the distance between the end face of one end of the right-angle plug and the axis of the opposite end, the distance between the end face of one end of the shield and the axis of the opposite end is also subject to dimensional limitations. When a relatively thick (i.e., relatively large outer diameter) cable core is installed inside the shielding cover, the distance between the outer circumference of the cable core and the inner circumference of the shielding cover is relatively reduced. Due to the reduced distance inside the shielding cover, the maximum bending radius that the internal space of the shielding cover can provide is also reduced. This results in a relatively smaller bending radius of the cable core inside the shielding cover, and it will bend sharply at the corners of the shielding cover, causing excessive bending at that point. This leads to deformation of the conductor of the cable core (i.e., the conductor inside the wire core), affecting the transmission effect and efficiency of the cable core. At the same time, the cable may also be damaged due to excessive deformation, posing related electrical safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a right-angle cable plug shield, which avoids increasing the length of the cable plug in the insertion direction to meet the relevant external size standards. It also prevents the cable from deforming the conductor inside the cable due to excessive bending inside the shield, ensuring good transmission effect and efficiency. In addition, it also prevents the cable from being damaged due to excessive deformation, thereby eliminating related electrical safety hazards.

[0005] The technical solution provided by this utility model is as follows: a right-angle cable plug shield, including a sleeve for the cable core to pass through. The sleeve includes a first segment and a second segment that are perpendicular to each other and connected. An expansion chamber is formed on the inner wall of the first segment, facing the port of the second segment. The side of the expansion chamber away from the port of the first segment extends obliquely to the inner wall of the second segment to form a first oblique portion, which is used to guide the cable core into the expansion chamber. The side of the expansion chamber adjacent to the port of the first segment extends obliquely to the inner wall of the first segment to form a second oblique portion, which is used to guide the cable core to run along the axis of the first segment.

[0006] In the aforementioned right-angle cable plug shield, the angle between the first inclined portion and the axis of the second segment is 45°.

[0007] In the aforementioned right-angle cable plug shield, the angle between the second inclined portion and the axis of the first segment is 78°.

[0008] In the aforementioned right-angle cable plug shield, the sleeve includes two L-shaped semi-grooves, each with a port at its end. The inner cavities of the two semi-grooves are open to each other and interconnected to form the sleeve structure.

[0009] Both of the two semi-grooves have an outwardly expanding cavity on their inner walls. The sides of the outwardly expanding cavities adjacent to the ports are inclined. The two outwardly expanding cavities face each other and are connected to form the expansion chamber, as well as the first inclined portion and the second inclined portion.

[0010] In the aforementioned right-angle cable plug shield, the two half-grooves are the first half-grooves and the second half-grooves, and the first half-grooves and the second half-grooves are interlocked.

[0011] In the aforementioned right-angle cable plug shield, the outer side of the first half-groove is in contact with the inner side of the second half-groove.

[0012] In the aforementioned right-angle cable plug shield, barbs are provided on both sides of the first half-groove and on the first inclined portion. The second half-groove has a locking hole corresponding to the barb, and the barb is engaged in the corresponding locking hole.

[0013] In the aforementioned right-angle cable plug shield, both the first half-groove and the second half-groove are provided with stress relief parts that extend through both the inner and outer sides, and both stress relief parts are located between the second inclined part and the port of the first segment.

[0014] In the aforementioned right-angle cable plug shield, there are two stress relief parts, both of which are parallel to the axis of the first segment; the two stress relief parts are spaced apart from each other.

[0015] In the aforementioned right-angle cable plug shield, the inner diameter of the port of the first segment is smaller than the inner diameter of the port of the second segment.

[0016] The beneficial effects of this utility model after adopting the above technical solution are as follows:

[0017] The shielding cover inside the right-angle plug of this technical solution adopts a sleeve structure, dividing the shielding cover into a first segment and a second segment. The first and second segments are perpendicular to each other and connected, with their junction forming the vertical corner of the shielding cover. The expansion chamber is located on the inner wall of the first segment, directly opposite the port of the second segment, i.e., the expansion chamber is located on one side of the vertical corner. The expansion chamber increases the internal space of the shielding cover, indirectly increasing the maximum bending radius that the internal space of the shielding cover can provide. After the cable core enters the expansion chamber, the bending radius of the cable core within the shielding cover increases, preventing the cable core from bending violently as a whole (i.e., a smaller bending radius). The first inclined portion on the expansion chamber extends beyond the vertical corner to the inner wall of the second segment. The first inclined portion becomes the inclined corner at the junction of the first and second segments, replacing the vertical corner. The cable core abuts against the first inclined portion within the second segment and is guided into the expansion chamber by the first inclined portion, preventing the cable core from bending vertically towards the first segment at the corner of the shielding cover and preventing the local curvature of the cable core from increasing. The second inclined portion of the expansion chamber extends obliquely to the inner wall of the first segment. The cable core within the expansion chamber is guided into the first segment via this second inclined portion, and passes through the port of the first segment along its axis. This ensures the cable core enters and exits the shielding cover vertically, while avoiding increasing the distance between the end face of one end of the shielding cover and the axis of the opposite end. This maintains a constant distance between the end face of one end of the right-angle plug and the axis of the opposite end. This technical solution avoids increasing the length of the cable plug in the insertion direction, ensuring the cable plug conforms to external size standards and has a compact structure. Furthermore, by optimizing the internal wiring, it effectively avoids excessive cable bending. This not only prevents conductor deformation and cable damage, thereby improving the integrity and efficiency of signal transmission, but also fundamentally eliminates electrical safety hazards caused by insulation damage. Attached Figure Description

[0018] Figure 1 This is a front view of the fully assembled right-angle cable plug shielding cover according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the front structure of a half-assembled right-angle cable plug shield according to an embodiment of the present invention.

[0020] Figure 3 This is an exploded front view of the right-angle cable plug shielding cover according to an embodiment of this utility model;

[0021] Figure 4 This is a side view of the fully assembled right-angle cable plug shielding cover according to an embodiment of the present invention;

[0022] Figure 5 This is a side view of a half-assembled right-angle cable plug shield according to an embodiment of the present invention.

[0023] Figure 6 This is a semi-assembled front view of a right-angle cable plug shield according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the fully assembled back structure of a right-angle cable plug shield according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the rear structure of a semi-assembled right-angle cable plug shield according to an embodiment of the present invention.

[0026] Reference numerals: 1. Sleeve; 2. First segment; 3. Second segment; 4. Expanded chamber;

[0027] 11. First half-groove; 111. Barb; 12. Second half-groove; 121. Locking hole;

[0028] 31. Stress relief section; 41. First inclined section; 42. Second inclined section; 43. Outward expansion cavity. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below with reference to specific embodiments, but this does not constitute any limitation on this utility model.

[0030] Example:

[0031] like Figure 1-8 As shown, a right-angle cable plug shield includes a sleeve 1 for the cable core to pass through. The sleeve 1 includes a first segment 2 and a second segment 3 that are perpendicular to each other and connected. An expansion chamber 4 is formed on the inner wall of the first segment 2, which faces the port of the second segment 3. The side of the expansion chamber 4 away from the port of the first segment 2 extends obliquely to the inner wall of the second segment 3 to form a first inclined portion 41, which is used to guide the cable core into the expansion chamber 4. The side of the expansion chamber 4 adjacent to the port of the first segment 2 extends obliquely to the inner wall of the first segment 2 to form a second inclined portion 42, which is used to guide the cable core to run along the axis of the first segment 2.

[0032] The specific working principle is as follows: In this embodiment, the shielding cover inside the right-angle plug adopts a sleeve structure, dividing the shielding cover into a first segment 2 and a second segment 3. The first segment 2 and the second segment 3 are perpendicular to each other and connected. The junction of the two is the vertical corner of the shielding cover. The expansion chamber 4 is opened on the inner wall of the first segment 2 and is directly opposite the port of the second segment 3, that is, the expansion chamber 4 is located on one side of the vertical corner. In this embodiment, the structural design of the expansion chamber 4 expands the internal space of the shielding cover, which indirectly increases the maximum bending radius that the internal space of the shielding cover can provide. After the cable core enters the expansion chamber 4, the bending radius of the cable core inside the shielding cover becomes larger, thereby avoiding severe bending of the cable core as a whole (i.e., a smaller bending radius). The first inclined part 41 on the expansion chamber 4 extends beyond the vertical corner to the inner wall of the second segment 3. The first inclined part 41 becomes the inclined corner at the junction of the first segment 2 and the second segment 3, replacing the vertical corner. The cable core abuts against the first inclined portion 41 within the second segment 3, and is guided into the expansion chamber 4 via the first inclined portion 41. This prevents the cable core from bending vertically towards the first segment 2 at the corner of the shield, thus preventing a local increase in the bending curvature of the cable core. The second inclined portion 42 of the expansion chamber 4 extends obliquely to the inner wall of the first segment 2. The cable core within the expansion chamber 4 is guided into the first segment 2 via the second inclined portion, and passes through the port of the first segment 2 along its axis. This ensures that the cable core enters and exits the shield vertically, while avoiding increasing the distance between the end face of one end of the shield and the axis of the opposite end, thus maintaining a constant distance between the end face of one end of the right-angle plug and the axis of the opposite end. This technical solution avoids increasing the length of the cable plug in the insertion direction, ensuring that the cable plug conforms to external size standards and has a compact structure. Furthermore, by optimizing the internal wiring, it effectively avoids excessive bending of the cable. This not only prevents conductor deformation and cable damage, thereby improving the integrity and efficiency of signal transmission, but also fundamentally eliminates electrical safety hazards caused by insulation damage.

[0033] Preferably, the angle between the first inclined portion 41 and the axis of the second segment 3 is 45°.

[0034] In practical applications, the first inclined portion 41 has an inclination angle of 45° in the lateral direction, making the angle between the first inclined portion 41 and the inner wall of the second segment 3 135°, and the angle between the first inclined portion 41 and the side wall of the expansion chamber 4 also 135°. That is, the degree of bending at the two angles is the same, and the bending degree is minimized together to achieve balance. The above design changes the bending shape of the cable core from a single sharp vertical bend to two relatively gentle bends when it abuts the first inclined portion 41, thereby effectively avoiding excessive local bending of the cable core.

[0035] Another preferred embodiment is that the angle between the second inclined portion 42 and the axis of the first segment 2 is 78°.

[0036] In this embodiment, the second inclined portion 42 has an inclination of 168° in the vertical direction, so that the second inclined portion 42 can smoothly transition with the inner wall of the first segment 2 and the side wall of the expansion chamber 4, respectively, to avoid the cable core from bending violently at the position where the expansion chamber 4 enters the first segment 2, and at the same time guide the cable core to run along the axis of the first segment 2.

[0037] In practical applications, shielding covers rely on the skin effect of high-conductivity materials to block high-frequency electromagnetic waves, and commonly used materials include copper and aluminum.

[0038] It should be noted that the grounding shield can be either directly grounded or indirectly grounded; this embodiment does not impose too many restrictions on this.

[0039] The sleeve 1 serves as the main body of the shielding sleeve. Its specific structure includes two L-shaped semi-grooves, each with a port at its end. The inner cavities of the two semi-grooves are open to each other and connected to form the sleeve structure.

[0040] The inner walls of the two semi-grooves are provided with outward expansion cavities 43. The sides of the adjacent ports of the outward expansion cavities 43 are inclined. The two outward expansion cavities 43 face each other and are connected to form an expansion chamber 4, as well as a first inclined part 41 and a second inclined part 42.

[0041] Sleeve 1 is mainly composed of two interconnected half-grooves. During installation, the cable core is placed into the inner cavity of one half-groove, and the cable core is bent according to the axis at both ends of the inner cavity and the outward expansion cavity 43. After bending, the inner cavity of the other half-groove is aligned with the cable core, and finally the two half-grooves are connected, surrounding the cable core circumferentially, thus completing the installation of sleeve 1. During this installation process, the operator can observe and control the degree of bending of the cable core throughout. Compared to the installation method that relies solely on feel to insert and remove the cable core from sleeve 1, the cable core will not unknowingly bend excessively during installation, improving installation quality and yield.

[0042] The inner sides of both half-grooves abut against the outer side of the cable's grounding shield to achieve a conductive connection and thus resist electromagnetic interference. Correspondingly, the inner side of the first segment 2 abuts against the outer side of the cable's grounding shield to achieve a conductive connection between the sleeve 1 and the grounding shield.

[0043] In this embodiment, the two half-grooves are the first half-grooves 11 and the second half-grooves 12, and the first half-grooves 11 and the second half-grooves 12 are engaged.

[0044] The first half-groove 11 and the second half-groove 12 are connected by a snap-fit ​​method, which gives the half-groove the advantages of low cost and high operability in processing and installation.

[0045] In specific connections, the first half-groove 11 and the second half-groove 12 can be connected in various ways. In addition to snap-fit, they can also be replaced by adhesive, riveting, ultrasonic welding or laser welding. This embodiment does not impose too many restrictions on this.

[0046] Preferably, the outer side of the first half-groove 11 is fitted with the inner side of the second half-groove 12.

[0047] Since the first half-groove 11 and the second half-groove 12 are connected by a snap-fit, a seam will be formed at the junction of the two. The outer side of the first half-groove 11 abuts against the inner side of the second half-groove 12, which is equivalent to the edge of the first half-groove 11 abutting against the inner side of the second half-groove 12. In other words, the junction of the first half-groove 11 and the second half-groove 12 is moved to the inner side of the second half-groove 12. Correspondingly, the seam is also moved to the inside of the second half-groove 12, that is, hidden inside the cylinder. This prevents the seam from being exposed on the outer surface of the cylinder, so that a small amount of electromagnetic waves on the outer surface of the cylinder cannot pass through the seam into the shielding cover, thereby preventing electromagnetic waves from interfering with the cable core through the seam and improving the anti-electromagnetic wave interference performance.

[0048] The specific structure of the first half-groove 11 and the second half-groove 12 is as follows: several barbs 111 are provided on the opposite sides of both ends of the first half-groove 11 and on the first inclined part 41. Several locking holes 121 are provided on the second half-groove 12. The several locking holes 121 correspond one-to-one with the several barbs 111, and the barbs 111 are locked in the corresponding locking holes 121.

[0049] In this embodiment, the barb 111 and the first half-groove 11 are integrally formed by sheet metal stamping.

[0050] In specific implementation, the barb 111 is provided on the edge of the first half-groove 11 in the form of a planar block structure, or a protrusion of the same planar block shape is stamped on the first half-groove 11. The three adjacent sides of the protrusion are separated from the first half-groove 11, and the remaining side of the protrusion is connected to the first half-groove 11. When the outer contour of the protrusion is curved, the curved edge of the protrusion is separated from the first half-groove 11, and the first and second ends of the curved edge of the protrusion are arranged at intervals, forming a connecting part between the first and second ends of the curved edge of the protrusion. The connecting part is integrally formed with the first half-groove 11. In specific installation, the planar block barb 111 (or protrusion) is first inserted into the buckle, and then the planar block barb 111 (or protrusion) is folded over by external force so that it becomes hook-shaped in the buckle hole 121 and is locked in the buckle hole 121 in a hook-shaped state.

[0051] In some embodiments, hook-shaped external components can also be fixed to the first half-groove 11 by means of adhesive or welding to form barbs 111 on the first half-groove 11.

[0052] It should be noted that when the cable core abuts against the first inclined part 41, the first inclined part 41 guides the cable core to turn by the reaction force on the cable core, so the first inclined part 41 needs to have greater pressure resistance. Therefore, the first inclined part 41 is provided with a barb 111 to engage with the locking hole 121 to enhance the connection strength at this point and prevent the first inclined part 41 from expanding or cracking due to the compression of the cable core.

[0053] In another preferred embodiment, both the first half-groove 11 and the second half-groove 12 are provided with stress relief parts 31 that extend through both the inner and outer sides; both stress relief parts 31 are located between the second inclined part 42 and the port of the first segment 2.

[0054] In actual installation, when the barb 111 is engaged in the locking hole 121, it will twist and deform the first half-groove 11 and the second half-groove 12 until their junction area fits together. The stress relief part 31 is provided so that the first half-groove 11 and the second half-groove 12 will release the internal stress of the first half-groove 11 and the second half-groove 12 through the corresponding deformation of the stress relief part 31 during the twisting and deformation process, thereby preventing the shielding cover from deforming as a whole and thus preventing the grounding shielding layer from being damaged due to the overall deformation of the shielding cover.

[0055] The stress relief section 31 has a specific structure in which two stress relief sections 31 are provided, both of which are parallel to the axis of the first segment 2; the two stress relief sections 31 are arranged at intervals.

[0056] During the process of the first half-groove 11 and the second half-groove 12 being fastened into the sleeve 1, the tooling restricts the joints on both sides of the first segment 2. When the first segment 2 is pressed, the edges of the joints on both sides of the first segment 2 are prevented from expanding outward. However, this also causes stress to concentrate in the middle of the first half-groove 11 and the second half-groove 12 and spread along the axial direction of the first segment 2. Therefore, the stress relief part 31 is arranged in a strip shape. The stress relief part 31 with the strip structure is parallel to the axis of the first segment 2. By matching the shape of the stress relief part 31 with the shape of the stress concentration distribution area, more of the concentrated stress on the first segment 2 can be released under the deformation of the stress relief part 31, thus preventing the first half-groove 11 and the second half-groove 12 from cracking along the axial direction of the first segment 2 due to stress.

[0057] If a single stress relief section 31 is provided, its width may be too small, making deformation of both the first half-groove 11 and the second half-groove 12 difficult, thus causing axial cracking along the first segment 2; or its width may be too large, leading to a decrease in the overall strength of the first segment 2, thereby affecting the connection strength of the first segment 2 during crimping. Preferably, two stress relief sections 31 are provided, symmetrical about the axis of the first segment 2 and spaced apart from each other. In practical applications, a combination of two stress relief sections with smaller widths is used to avoid both insufficient connection strength of the first segment 2 due to the large width of a single stress relief section 31 and axial cracking of the first half-groove 11 and the second half-groove 12 due to the small width of a single stress relief section 31.

[0058] In the specific design, the stress relief part 31 is an elongated hole.

[0059] In some embodiments, the stress relief part 31 may also be replaced by a hole-shaped or arc-shaped structure, and this embodiment does not impose too many restrictions on this.

[0060] In addition, the inner diameter of the port of the first segment 2 is smaller than the inner diameter of the port of the second segment 3, so as to facilitate crimping onto the grounding shield layer of the cable.

[0061] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A right-angle cable plug shield, comprising a sleeve for a cable core to pass through, said sleeve comprising a first segment and a second segment that are perpendicular to and communicate with each other, characterized in that, An expansion chamber is formed on the inner wall of the first segment, facing the port of the second segment. The side of the expansion chamber away from the port of the first segment extends obliquely to the inner wall of the second segment to form a first oblique portion, which is used to guide the cable core into the expansion chamber. The side of the expansion chamber adjacent to the port of the first segment extends obliquely to the inner wall of the first segment to form a second oblique portion, which is used to guide the cable core to run along the axis of the first segment.

2. The right-angle cable plug shielding cover according to claim 1, characterized in that, The angle between the first inclined portion and the axis of the second segment is 45°.

3. The right-angle cable plug shielding cover according to claim 1, characterized in that, The angle between the second inclined portion and the axis of the first segment is 78°.

4. The right-angle cable plug shielding cover according to any one of claims 1-3, characterized in that, The sleeve includes two L-shaped semi-grooves, each with a port at its end. The inner cavities of the two semi-grooves are open to each other and interconnected to form the sleeve structure. Both of the two semi-grooves have an outwardly expanding cavity on their inner walls. The sides of the outwardly expanding cavities adjacent to the ports are inclined. The two outwardly expanding cavities face each other and are connected to form the expansion chamber, as well as the first inclined portion and the second inclined portion.

5. The right-angle cable plug shielding cover according to claim 4, characterized in that, The two half-slots are the first half-slot and the second half-slot, and the first half-slot and the second half-slot are engaged.

6. The right-angle cable plug shielding cover according to claim 5, characterized in that, The outer side of the first half-groove is in contact with the inner side of the second half-groove.

7. The right-angle cable plug shielding cover according to claim 5, characterized in that, The first half-groove has barbs on both sides of its two ends and on the first inclined portion. The second half-groove has a locking hole corresponding to the barb, and the barb is engaged in the corresponding locking hole.

8. The right-angle cable plug shielding cover according to claim 7, characterized in that, Both the first and second half-grooves are provided with stress relief parts that extend through both the inner and outer sides, and both stress relief parts are located between the second inclined part and the port of the first segment.

9. The right-angle cable plug shielding cover according to claim 8, characterized in that, The stress relief section is provided in two parts, both of which are parallel to the axis of the first segment; the two stress relief sections are arranged at intervals.

10. The right-angle cable plug shield according to any one of claims 1-3, characterized in that, The inner diameter of the port of the first segment is smaller than the inner diameter of the port of the second segment.

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