Cable connecting piece

Abstract

The invention relates to the technical field of power transmission equipment, in particular to a cable connecting piece which is used for being connected with a cable connector sleeved with a corrugated pipe, an annular protruding part coaxial with a cavity axis is arranged in an end sleeve body to divide a containing cavity, an axial stopping shoulder part is formed on the first side, and the end of the corrugated pipe obtains a definite axial reference; a corrugated pipe locking structure in the first containing section is matched with an annular groove in the periphery of the corrugated pipe in a locking mode, and axial and circumferential positioning of the corrugated pipe is achieved. The end sleeve body and the bending joint body are detachably connected through the connection coupling structure and jointly define a through cavity from the first accommodating section to the bending channel through the second accommodating section, and continuous guiding of steering leading-out is kept; a cable locking piece is arranged in a cable locking cavity formed by the second containing section and the cavity section on the inner side of the connecting end of the bending connector body, the periphery of the cable is clamped in the radial direction, and the axial position of the cable is limited.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power transmission equipment, in particular to a cable connecting piece. BACKGROUND

[0002] In cable wiring protection, cables are often matched with plastic corrugated pipes to improve wear resistance and bending resistance; to realize turning and leading out, a joint with a bending channel is often used in combination with a cable clamping mechanism on site. The existing products usually separate the "corrugated pipe end positioning / retaining" and "cable end clamping / sealing" in different parts or different cavity sections, and the assembly sequence, stress link and pre-tightening amount of the two are difficult to synchronize; under the conditions of bending butt joint or external force traction, the situation that only one side is effectively locked and the other side produces axial movement, retreats into the groove or relative displacement often occurs, resulting in unstable coaxiality and attitude of the leading-out path, and easily forming problems such as false locking, rework and maintenance difficulty.

[0003] At the same time, the existing corrugated pipe end often relies on the cooperation of a ring, a jaw or a simple step with the annular groove on the outer periphery of the corrugated pipe, and the axial stop and circumferential limiting are insufficient; the common gland + elastic sleeve at the cable end has large uneven circumferential stress and large anti-pullout dispersion under the superposition of small cavity, tolerance and assembly deviation. Since the locking structures at both ends are independent of each other, the through channel between the bending joint and the straight section is difficult to maintain a stable geometric relationship during assembly and stress process, and there is a risk of deviation of the leading-out direction, local compression of the cable outer sheath or drift of the sealing state; under the conditions of vibration, temperature difference and contaminated environment, the above problems are further amplified, affecting batch consistency and long-term operation reliability.

[0004] In addition, the assembly site relies on visual and tactile feeling for the in-place state, and lacks perceptible prompts; under the conditions of oil stains or compact workstations, the operation bearing surface on the outer surface of the joint is insufficient, and the tightening and disassembly is limited; for cables with shielding layers, the leading-out of the shielding / grounding is often an additional part or temporary contact, and the contact continuity and stability are difficult to guarantee due to space and deformation. In summary, the existing technology still has obvious deficiencies in the aspects of realizing the cooperative locking of the corrugated pipe end and the cable end in the same connecting piece, suppressing relative displacement under the conditions of bending butt joint and stress state, and maintaining the stable geometric relationship of the through channel and the assembly consistency. SUMMARY

[0005] (I) The technical problem to be solved by the present application is that in the combined application of the cable-bellows, the existing connector is difficult to simultaneously realize the cooperative locking and relative displacement inhibition of the bellows end and the cable end in the same structure: on the one hand, there is a lack of clear and stable axial stop reference between the bellows end and the connector, which is prone to retreat or movement under the conditions of bending butt joint, external force, vibration, temperature difference and the like; on the other hand, the cable end lacks a definable clamping chamber and a clamping interface at the joint interface, so that the coaxiality and geometric relationship of the through channel are difficult to maintain stable during assembly and operation, thereby leading to the deviation of the lead-out posture, poor assembly consistency and insufficient long-term operation reliability.

[0006] (II) Technical solution In order to solve the above technical problems, the present application provides a cable connector for connecting a cable joint sleeved with a bellows, comprising: an end sleeve body having a through accommodating cavity, an annular protrusion coaxial with the cavity axis is arranged in the accommodating cavity, and the accommodating cavity is divided into adjacent first and second accommodating sections along the axial direction; the annular protrusion forms an axial stop shoulder for the bellows end on the side facing the first accommodating section, so that the bellows end obtains a clear axial reference and retreat boundary, and the retreat and movement under the conditions of bending butt joint and stress are inhibited; the first accommodating section is provided with a bellows locking structure matched with the outer periphery of the bellows connection end, and the bellows locking structure is used for locking and matching with the annular groove of the bellows; cooperated with the stop shoulder, the axial and circumferential composite constraint of the bellows is formed, and the end positioning stability is improved; a bending joint body having a bending channel extending along the inside thereof; the end sleeve body and the bending joint body are detachably connected through a connecting coupling structure, and after being connected, the two jointly define a through chamber from the first accommodating section through the second accommodating section and extending into the bending channel; it is convenient to complete the turning and lead-out in a limited space, while maintaining the geometric continuity and coaxial relationship of the lead-out channel, and the assembly and maintenance are friendly; a cable locking chamber is jointly defined by the second accommodating section and the connecting end inside cavity section of the bending joint body, a cable locking piece for clamping the outer periphery of the cable is arranged in the cable locking chamber, the outer periphery of the cable is clamped at the joint interface, a clear clamping interface and position constraint are established, so as to inhibit the relative displacement of the cable under the conditions of bending butt joint and external force, reduce the lead-out posture change and outer sheath abrasion; The constraint of the above-mentioned bellows end and cable end forms a cooperative locking link in the same connector, so that the assembly sequence and stress link are consistent, the assembly consistency and operation reliability are improved; Under the field environment of vibration, temperature difference and pollution, stable stop and clamping interface helps to reduce state drift and failure risk, improve long-term service life and batch consistency.

[0007] According to one embodiment of the present application, the bellows locking structure comprises: A locking seat sleeve constitutes at least part of the circumferential side wall of the first accommodating section, and a plurality of windows extending in the axial direction are arranged on the circumferential wall of the locking seat sleeve; An elastic clamping member is arranged on the inner side of the circumferential wall of the first accommodating section and is clamped with the locking seat sleeve, and the elastic clamping member comprises a plurality of elastic clamping teeth corresponding to the windows one by one, each elastic clamping tooth comprising an outer positioning protrusion and an inner sharp clamping tooth; The outer positioning protrusion penetrates into the corresponding window and is positioned and matched with the window; the inner sharp clamping tooth protrudes radially into the first accommodating section, comprising a lead-in slope in the direction of the bellows insertion and a retreat-preventing surface opposite to the insertion direction, for clamping with the annular groove on the outer periphery of the bellows; the elastic clamping tooth can be elastically displaced radially at the window.

[0008] The cooperation makes the bellows end guided into by the lead-in slope in the direction of the insertion force, the elastic clamping tooth elastically displaced radially at the window, and the self-locking engagement of the slope-slope formed by the retreat-preventing surface and the annular groove side wall of the bellows after the bellows peak is crossed, to complete the quick locking of "one-way insertion and reverse retreat prevention"; the plurality of clamping teeth correspond to the circumferentially distributed windows, providing multi-point annular stress and axial anti-pulling path, reducing the load of a single tooth and inhibiting local damage; the positioning cooperation of the outer positioning protrusion and the window defines the working stroke and the rotation angle of the clamping tooth, avoiding the retraction failure of the tooth body under tension, and improving the positioning at the same time as the assembly guide; the locking seat sleeve constitutes the circumferential side wall of the first accommodating section, making the locking mechanism coaxial and rigid with the cavity, reducing the influence of assembly deviation on locking consistency from the source; the elastic displacement of the clamping tooth at the window has self-adaptive ability to the size drift caused by the outer diameter tolerance, roundness deviation and temperature difference of the bellows, maintaining a low peak insertion force during the insertion stage, and forming a stable axial stop and circumferential limit during the locking stage, so as to keep the bellows end in place and prevent the stability under the bending butt joint and vibration working conditions.

[0009] According to one embodiment of the present application, the outer positioning protrusion and the window are provided with a preset assembly gap in the axial direction in the assembly state, so that the locking seat sleeve and the elastic clamping member can move relative to each other between the stretched position and the folded position; The end of the window away from the second accommodating section is provided with a stop window edge; The outer positioning protrusion comprises a first protrusion section and a second protrusion section arranged axially adjacent, wherein the first protrusion section has a greater protruding height than the second protrusion section, and the second protrusion section is arranged axially away from the second accommodating section and corresponds to the stop window edge; When the locking seat sleeve and the elastic clamping member are in the stretched position, the second protrusion section is partially or completely inserted into the stop window edge to limit the radial displacement of the elastic clamping teeth. When the locking seat sleeve and the elastic clamping member are in the folded position, the second protrusion section is exposed from the stop window edge to allow the elastic clamping teeth to be radially displaced.

[0010] The preset assembly gap gives the locking seat sleeve and the elastic clamping member an axial stroke interval, so that the two form two working conditions of stretching / folding based on the windowed end: when in the stretched position, the second protrusion section away from the second accommodating section is limited by the windowed distal end (the stop window edge), and the radial expansion of the elastic clamping teeth is prohibited, so the clamping teeth always sit in the circumferential groove of the corrugated pipe; under the action of external pulling, bending or vibration load, the stop surface of the clamping teeth only bears contact pressure with the groove side wall, and will not step out of the groove, thereby maintaining the one-way locking state. When the press end sleeve body and the bending joint side enter the folded position, the second protrusion section is exposed relative to the stop window edge, and the expansion limiting of the clamping teeth at the windowed end is released; at this time, under the combined action of axial pulling force and tooth-groove slope reaction force, the clamping teeth can be radially expanded under control, and the stop surface can climb over the groove step to realize the lossless release of the corrugated pipe and the trigger release of the end sleeve body. The dual-state limiting and unlimiting mechanism clearly decouples the normal locking and maintenance unlocking: in the normal state, the geometric stop inhibits false retreat, maintaining stable engagement against vibration and impact; when disassembly and replacement are needed, the trigger release is triggered with a short stroke, the release path is determined, the stress distribution is controllable, the tooth tip and the groove edge wear are reduced, and the consistency and reusability of repeated assembly are improved.

[0011] According to an embodiment of the present application, the stop shoulder is provided with a ring-shaped elastic member, which abuts against the axial end surface of the elastic clamping member towards the second accommodating section and is axially compressed in the folded position.

[0012] The annular elastic member is arranged at the stop shoulder and abuts against the axial end surface of the elastic locking member, so that the locking mechanism forms axial preloading in the normal state and points to the stretched position, and the second protruding section is stably kept in the positioning relationship with the distal end of the window, thereby inhibiting the clearance movement and accidental release caused by vibration, temperature difference and tolerance accumulation; when the mechanism is pressed to turn into the folded position, the annular elastic member is axially compressed, a repeatable energy storage and reset force is provided, the mechanism is pushed back to the stretched position after the external force is released, and the geometric limit of the outward expansion of the clamping tooth is restored, thereby ensuring the continuous effectiveness of the one-way stop; meanwhile, the axial elastic coupling shares the impact load in the conversion process, smooths the mechanical response, reduces the meshing abrasion of the tooth tip and the corrugated pipe groove, absorbs the tolerance of assembly deviation and size drift, and is beneficial to the stability and consistency of the locking-unlocking cycle.

[0013] According to an embodiment of the present application, the corrugated pipe locking structure comprises: The body base section and the clamping ring section are arranged at the first accommodating section and are threadedly connected to each other, and the inner side of the clamping ring section is provided with a limiting shoulder; An annular elastic sleeve is clamped between the body base section and the clamping ring section, and the inner periphery of the annular elastic sleeve is provided with sharp clamping teeth in the circumferential direction; When the body base section and the clamping ring section are threadedly screwed to the end stop position, the limiting shoulder and the body base section axially compress the annular elastic sleeve, so that the sharp clamping teeth are radially inwardly biased and locked with the circumferential groove of the outer periphery of the corrugated pipe.

[0014] Through the end stop type threaded clamping of the clamping ring section and the body base section, the limiting shoulder axially compresses the annular elastic sleeve at the end stop position, so that the inner periphery of the elastic sleeve is continuously meshed and circumferentially covered with the circumferential groove of the corrugated pipe in the coupling deformation of axial compression and radial inward bias, thereby achieving the anti-pull locking and establishing a circumferential continuous sealing band at the tooth-corrugated valley / peak, thereby inhibiting the entry of external water vapor and dust into the first accommodating section along the corrugation; the elastic material has self-adaptive ability to assembly tolerance, outer diameter fluctuation and ovality, can maintain stable pre-tightening under temperature difference, vibration and long-term load, and reduces the local indentation and loose migration of hard contact structure; the end stop structure limits the pre-tightening amount within a repeatable assembly window, reduces the dependence on the operator's feeling, and improves the batch consistency; the circumferential compression and covering of the clamped type also isolate and block the through cavity caused by bending, thereby reducing the probability of migration of moisture and pollutants to the cable locking chamber, thereby balancing the locking reliability and protection integrity, and being beneficial to the repeatable reset during subsequent disassembly and maintenance.

[0015] According to an embodiment of the present application, the cable locking member comprises: An annular elastic sleeve is arranged in the cable locking chamber, and the inner periphery of the annular elastic sleeve defines a cable passage; A ring clamping member is sleeved on the outer periphery of the ring elastic sleeve. The ring clamping member is provided with a plurality of radially retractable toothed portions spaced circumferentially, and each toothed portion has an inwardly retracted end facing the first receiving section. The annular protrusion forms a compression slope on the side facing the second accommodating section, and the compression slope mates with the inward ends of each toothed portion. When the bending connector body and the second accommodating section are aligned to the end position, the axial accommodating space of the cable locking chamber is compressed, thereby applying axial pressure to the cable locking member, causing the inward ends of the multiple teethed portions to be guided radially inward along the compression slope, so that the annular elastic sleeve is uniformly subjected to circumferential force to produce radial inward deformation, reduce the inner diameter of the cable channel, and circumferentially clamp the outer periphery of the cable.

[0016] By converting the axial compression applied during "end-stop" into multi-point synchronous radial inward contraction via the extrusion ramp, the toothed parts are arranged discretely along the circumference, causing the annular clamping element to form an approximately continuous circumferential contraction of the annular elastic sleeve. Under internal pressure, the elastic sleeve uniformly adheres to the cable sheath, which not only improves pull-out resistance but also suppresses eccentric clamping and local crushing. The assembly force is precisely defined by the limitation of the axial accommodating space of the chamber, and the end-stop position provides a stable clamping reference, reducing dependence on tightening torque and operator experience, resulting in better batch consistency. The rebound and viscoelastic properties of the annular elastic sleeve can absorb dimensional drift caused by micro-vibration and thermal expansion and contraction, maintaining long-term preload and friction clamping. Even under bending conditions, it can maintain the coaxial relationship between the cable and the through chamber, reducing micro-slippage and wear, and improving the stability and durability of the lead-out path.

[0017] Furthermore, the inner end of the toothed portion is provided with an outer protrusion; the surface of the extrusion bevel is provided with circumferentially spaced grooves; The bending joint body is provided with an annular abutment platform, and the outer periphery of the annular elastic sleeve is provided with a bearing step that abuts against it, and the outer peripheral surface of the bearing step is flush with the outer peripheral surface of the annular clamping member. The bent joint body is screwed to the second accommodating section via a thread; During the process of the bending connector body docking with the second receiving section and rotating relative to it, the frictional engagement between the bearing step and the annular abutment platform is greater than the contact friction between the outer protrusion and the groove, so that the cable locking member maintains angular positioning relative to the bending connector body, and the outer protrusion crosses the groove in sequence, producing an intermittent locking prompt sound.

[0018] The outer protruding block and the groove of the extrusion slope surface form an angularly discrete meshing-to-greater-ridge mechanism. During the screwing process of the bending joint body and the second accommodating section, a stable surface contact friction pair is established between the bearing step and the annular abutting platform, and the friction force is higher than the contact friction between the outer protruding block and the groove. Thus, the cable locking member is angularly positioned with the bending joint body and is not pulled, the outer protruding block sequentially crosses the ridge on the relatively static extrusion slope to generate intermittent "locking" sound and tactile prompt, and the perceptible indexing and in-place confirmation of the screwing process are realized; the bearing step is flush with the outer peripheral surface of the annular clamping member, the stress and friction distribution are consistent in the circumferential direction, local partial wear is avoided, and the radial inward retraction of the toothed portion is ensured to be performed at a predetermined rhythm, so that a repeatable axial compression and circumferential clamping reference is formed at the end stop position, the dependence on absolute torque and operator experience is reduced, the assembly consistency and anti-loose stability are improved, and the screwing step and end stop state are determined by process quality control.

[0019] According to an embodiment of the present application, an outer surface of the end sleeve body is provided with anti-skid lines. The anti-skid lines improve the gripping friction and torque transmission, reduce the slipping in the working conditions such as oil stains and wearing gloves, facilitate the stable screwing of the end sleeve body and the bending joint body to the end stop and the pre-tightening, reduce over-tightening / slip tooth and rework, and improve the assembly and maintenance consistency.

[0020] According to an embodiment of the present application, the bending joint body is a conductive metal member, and an annular clamping groove is arranged on an inner peripheral wall of a cable outlet end away from the second accommodating section. A cylindrical conductive terminal is coaxially assembled in the cable outlet end, a side wall of the cylindrical conductive terminal is provided with an elastic clamping piece, the elastic clamping piece is clamped and positioned with the annular clamping groove and electrically contacts with the bending joint body. An elastic shielding contact piece is arranged on the cylindrical conductive terminal, the elastic shielding contact piece faces the terminal inner cavity and is used for circumferentially contacting with a metal shielding layer of the cable, so as to electrically connect the metal shielding layer to the bending joint body.

[0021] The bending joint body is made of conductive metal and is provided with an annular clamping groove on the inner circumferential wall of the lead-out end, and the elastic clamping piece of the cylindrical conductive terminal realizes integrated mechanical positioning and electrical connection: the elastic clamping piece is elastically expanded and clamped into the clamping groove, thereby limiting the assembly depth and axial position of the terminal, forming anti-loose circumferential limiting, and under the action of elastic pre-pressure, the clamping piece is in low-resistance contact with the metal joint body; the elastic shielding contact piece provided on the inner side of the terminal is directed towards the inner cavity to form circumferential elastic fitting with the metal shielding layer of the cable, thereby maintaining stable contact pressure, reducing contact resistance and fretting wear, effectively guiding the shielding layer to the bending joint body to discharge static electricity and suppress electromagnetic coupling interference; the clamping relationship between the clamping groove and the clamping piece makes the assembly stroke and the in-place state repeatable and controllable, facilitating on-site quick insertion and subsequent maintenance and replacement without additional fasteners; the whole realizes short-path and low-impedance electrical connection of "terminal-joint body-shielding layer", improves the continuity and long-term stability of electrical contact in vibration, temperature difference and contaminated environment, and at the same time maintains the coaxiality of the terminal and the consistency of the lead-out path.

[0022] According to one embodiment of the present application, the bending joint body is a conductive metal piece, and an annular clamping groove is arranged on the inner circumferential wall of the cable lead-out end thereof; The triangular spring conductive terminal is coaxially arranged in the cable lead-out end, and the triangular spring conductive terminal is an annular elastic piece with a triangular radial cross section and having opposite annular base edges and annular top edges, wherein the annular base edges are embedded in the annular clamping groove and are in electrical contact with the bending joint body, and the annular top edges are directed towards the terminal inner cavity and are used for circumferential elastic contact with the metal shielding layer of the cable.

[0023] By using the triangular spring conductive terminal, the annular base edges are embedded in the annular clamping groove of the inner circumferential wall of the lead-out end and are in conduction with the bending joint body, and under the action of the wedge-shaped geometry of the triangular cross section, stable radial elastic pre-pressure is generated after axial assembly, so that the annular top edges form circumferential continuous elastic fitting with the metal shielding layer of the cable; the clamping groove positioning of the base edges provides reliable axial / circumferential limiting and coaxial retention, avoids rotation or creeping of the terminal with the cable, shortens the current loop path of "shielding layer-terminal-joint body", and reduces contact resistance and loop inductance; the top edges are in line contact with the shielding layer under the force and fretting conditions, and evolve into stable strip-shaped contact, which not only inhibits local compression but also has a micro-rubbing self-cleaning effect, thereby reducing the influence of pollution film and oxide film; the uniform stress field of the annular elastic piece can adapt to the outer diameter tolerance, ellipticity and thermal expansion and contraction of the shielding layer, thereby maintaining long-term contact pressure and electrical connection continuity, and assembly does not require additional fasteners and direction alignment, which is suitable for quick insertion and repeated maintenance in a narrow site.

[0024] (III) The beneficial effects of the present application: By setting the annular protrusion part coaxial with the cavity axis in the end sleeve body, the accommodation cavity is separated and the axial stop shoulder is formed on the first side, so that the corrugated pipe end obtains a clear axial reference; The corrugated pipe locking structure in the first accommodation section is locked and matched with the annular groove on the outer periphery of the corrugated pipe, so as to realize the axial and circumferential positioning of the corrugated pipe; The end sleeve body and the bending joint body are detachably connected through the connecting coupling structure, and the through cavity from the first accommodation section to the bending channel is defined by the two, so as to maintain the continuous guidance of the turning-out; The cable locking part is arranged in the cable locking chamber formed by the second accommodation section and the inner side cavity section of the connecting end of the bending joint body, so as to radially clamp and limit the axial position of the cable periphery. Thus, the corrugated pipe end and the cable end are cooperatively locked in the same connector, the relative displacement is inhibited under the bending butt joint and stress / vibration working conditions, the coaxiality and geometric stability of the lead-out path are maintained, the assembly consistency and operation reliability are improved, and the assembly and maintenance are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The cable connector provided by an embodiment of the present application provides a three-dimensional structure schematic diagram; Figure 2 The cable connector provided by an embodiment of the present application provides a three-dimensional structure schematic diagram in an exploded state; Figure 3 The structure schematic diagram of the end sleeve body in a folded position is provided by an embodiment of the present application; Figure 4 The structure schematic diagram of the end sleeve body in a stretched position is provided by an embodiment of the present application; Figure 5 The internal structure schematic diagram of the end sleeve body in a stretched position is provided by an embodiment of the present application; Figure 6 The three-dimensional structure schematic diagram of the locking seat sleeve and the elastic clamping part when separated is provided by an embodiment of the present application; Figure 7 The internal three-dimensional structure schematic diagram of the locking seat sleeve is provided by an embodiment of the present application; Figure 8 The three-dimensional structure schematic diagram of the elastic clamping part is provided by an embodiment of the present application; Figure 9 The three-dimensional structure schematic diagram of the cable locking part is provided by an embodiment of the present application; Figure 10 A perspective view of a first angle of a bending joint body according to an embodiment of the present application; Figure 11 A perspective view of a second angle of a bending joint body according to an embodiment of the present application; Figure 12 A perspective view of a cylindrical conductive terminal according to an embodiment of the present application; Figure 13 A perspective view of a cable connector according to an embodiment of the present application; Figure 14 A perspective view of a bellows locking structure in a split state according to an embodiment of the present application; Figure 15 An internal perspective view of a bellows locking structure in a split state according to an embodiment of the present application; Figure 16 A perspective view of a triangular spring conductive terminal according to an embodiment of the present application.

[0027] Figure: 1, end sleeve body; 11, anti-skid pattern; 12, annular protrusion part; 121, stop shoulder; 122, extrusion bevel; 1221, ridge groove; 13, first accommodating section; 14, second accommodating section; 15, locking seat sleeve; 151, window; 1511, stop window edge; 16, elastic clamping member; 161, elastic clamping tooth; 1611, outer positioning convex; 16111, first convex section; 16112, second convex section; 1612, inner sharp clamping tooth; 17, body base section; 18, buckling ring section; 181, limiting shoulder; 19, annular elastic sleeve; 191, sharp clamping tooth; 2, bending joint body; 21, abutting platform; 22, annular clamping groove; 3, cable locking chamber; 4, cable locking member; 41, annular elastic sleeve member; 411, bearing step; 42, annular clamping member; 421, toothed part; 4211, outer protruding block; 5, assembly gap; 6, annular elastic member; 7, cylindrical conductive terminal; 71, elastic clamping sheet; 72, elastic shielding contact sheet; 73, elastic protrusion; 8, triangular spring conductive terminal; 101, bellows; 102, cable; 1021, shielding layer. DETAILED DESCRIPTION

[0028] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0029] like Figures 1 to 12 As shown, this embodiment provides a cable connector for connecting a cable joint with a corrugated tube 101. In this embodiment, the cable 102 is a power / signal composite cable composed of multiple copper conductors. The conductors are covered with an inner insulation layer and an outer sheath in sequence. A shielding layer 1021 (which can be a metal braided mesh or foil tape structure) is provided between the two sheaths. The shielding layer 1021 is used for electrical connection with the equipment shielding / grounding system. The cable joint is used to electrically connect and mechanically fix the cable 102 with the corrugated tube 101 to the equipment side interface (such as the housing opening / connector seat, power distribution unit or terminal module inlet), and to complete the spatial transition and guidance from the straight section to the bend.

[0030] The connector is generally composed of a detachable end sleeve body 1 and a bending connector body 2. The end sleeve body 1 has a through-cavity inside, and its outer surface has anti-slip texture 11 for easy hand-tightening operation. An annular protrusion 12 is coaxially arranged within the cavity, dividing the cavity axially into adjacent first accommodating sections 13 and 14. The annular protrusion 12 forms a stop shoulder 121 facing the first accommodating section 13, providing a clear axial positioning reference for the end face of the bellows 101. The first accommodating section 13 is equipped with a bellows 101 locking structure for locking into the circumferential groove on the outer periphery of the bellows 101, thus completing the positioning and preventing the bellows 101 from retracting. The second accommodating section 14 and the inner cavity of the connecting end of the bending connector body 2 together define a cable 102 locking chamber. A cable 102 locking member 4 is arranged within this chamber, circumferentially clamping the cable 102 and defining its axial position. The bending connector body 2 forms a bending channel along its interior to change the lead-out direction and connect with the interface of the connected body; the end sleeve body 1 and the bending connector body 2 are detachably connected through a connection coupling structure. After assembly, they jointly limit the passage from the first receiving section 13 through the second receiving section 14 and into the through cavity of the bending channel, so that the cable 102 and the corrugated pipe 101 are continuously guided and restricted in the same channel. The above component names and functional correspondences provide a framework for the structural refinement and process implementation of the subsequent sections of this embodiment. The following sections will elaborate on the specific implementation of their structures and mating relationships.

[0031] likeFigures 3 to 8 As shown, in the present embodiment, the locking sleeve 15 can be connected to the end sleeve body 1 in a snap / screw fit manner, or can be integrally formed with the circumferential side wall of the end sleeve body 1; the latter is adopted in the present embodiment, and the locking sleeve 15 is integrally formed with the end sleeve body 1 and forms the barrel-shaped housing of the first accommodating section 13. The number and shape of the windows 151 can be selected as a plurality of long slot holes, rounded rectangular holes or slit holes according to the circumferential load and assembly process; the present embodiment preferably has four windows 151, each being an oblong opening extending along the axial direction, arranged at equal angles in the circumferential direction, and the end away from the second accommodating section 14 is defined as a stop window edge 1511 to provide an axial reference. The two side edges of the window 151 serve as the radial guide edge and circumferential anti-rotation surface of the elastic member, and the edge can be chamfered or rounded, and the present embodiment adopts a rounded transition to facilitate insertion.

[0032] The elastic locking member 16 can be a segmented elastic ring or an integral ring sleeve type elastic member; the present embodiment adopts an integral ring sleeve type structure, which is circumferentially provided with four elastic clamping teeth 161 corresponding to the windows 151, and is circumferentially symmetrically fitted with the locking sleeve 15. The outer positioning structure of the elastic clamping tooth 161 can be a stepped, bulge or composite curved surface type protrusion; the present embodiment adopts a stepped outer positioning protrusion 1611, which is composed of a first protrusion section 16111 and a second protrusion section 16112 adjacent along the axial direction, both of which are outwardly protruding bulges and form a clear step difference in the outer extension height, and the second protrusion section 16112 is arranged on the side away from the second accommodating section 14 and abuts against the stop window edge 1511 at the end of the window 151. The inner tooth shape of the elastic clamping tooth 161 can be a sharp tooth, a wedge tooth or a composite inclined surface tooth; the present embodiment adopts a sharp tooth, which is composed of an insertion inclined surface facing the insertion direction of the corrugated pipe 101 and a retreat prevention surface opposite to the insertion direction, and protrudes radially inward of the first accommodating section 13 to engage with the annular groove of the corrugated pipe 101. During assembly, the outer positioning protrusion 1611 penetrates into the window 151 and is guided by the side edge thereof, and an axial assembly gap 5 is provided between the outer positioning protrusion 1611 and the window 151; this assembly gap 5 can be obtained by structure tolerance chain or end face reference control, and the present embodiment adopts the structure tolerance chain to limit the relative movement between the locking sleeve 15 and the elastic locking member 16 between the stretched position and the folded position: in the stretched position, the second protrusion section 16112 partially or completely abuts against the stop window edge 1511, geometrically limiting the radial expansion of the elastic clamping tooth 161, so that the inner sharp tooth 1612 is continuously retained in the annular groove of the corrugated pipe 101; in the folded position, the second protrusion section 16112 is exposed relative to the stop window edge 1511, and the expansion of the elastic clamping tooth 161 is released from the window 151, and under the action of the pulling-out direction force and the tooth-groove inclined surface reaction force, the elastic clamping tooth 161 is allowed to have a controlled radial elastic displacement, achieving the unlocking and disengagement of the corrugated pipe 101.

[0033] The annular elastic member 6 can be configured as a metal wave spring, a rubber elastic ring, or a coil of spring wire, etc. In this embodiment, the annular spring member is arranged at the stop shoulder 121, supported on one side by the stop shoulder 121, and on the other side abuts the axial end face of the elastic locking member 16 towards the second accommodating section 14. When the mechanism is in the collapsed position, the annular elastic member 6 is axially compressed; after the external pressing is released, the annular elastic member 6 provides a restoring thrust, causing the locking sleeve 15 and the elastic locking member 16 to return to the stretched position and restore the alignment and limiting relationship between the second protruding section 16112 and the stop window edge 1511, thereby realizing the cycle of normal locking, pressing unlocking, and automatic resetting in the same structure.

[0034] As shown in Figure 2 and Figure 9 , the cable 102 locking member 4 is configured to lock the cable 102, including an annular elastic sleeve member 41 arranged in the cable 102 locking chamber, which defines a cable 102 passage in its inner circumference; The annular elastic sleeve member 41 is made of a rubber-based elastic body and shaped as a whole sleeve, with a through cable 102 passage in its inner hole, and a slight positioning flange or roughened surface on its outer circle to form an interference fit with the annular clamping member 42 to prevent slippage; during assembly, the annular elastic sleeve member 41 is first pressed into the inner cavity of the annular clamping member 42 and positioned at the end face, or double-material overmolding can be used to achieve higher interface stability. The annular clamping member 42 is a plastic member with a short cylinder plus end rim structure, and a plurality of axial through slits are circumferentially arranged to divide it into multiple equally spaced tooth-shaped parts 421, each tooth-shaped part 421 being an elastic beam segment extending in the axial direction, which elastically retracts around the outer circle under radial force; this embodiment provides six tooth-shaped parts 421 to facilitate the formation of an approximately uniform retracting ring belt in the circumferential direction. The retracting end of each tooth-shaped part 421 towards the one end of the first accommodating section 13 is arranged to retract, and the retracting end and the extrusion slope 122 on one side of the annular protrusion 12 are opposite to each other, with a smooth curved surface or a chamfered flat surface as the meshing surface of the retracting end and the slope to reduce the local stress when guiding along the slope.

[0035] During the screwing of the bending joint body 2 to the second accommodating section 14, the cable 102 locking chamber is compressed in the axial direction, the inner end of the toothed part 421 slides along the extrusion slope 122 and is guided by the slope to generate radial inward retraction in an angle range of 30°-60°, thus converting the axial compression amount into radial clamping in multiple points in the circumferential direction; the annular elastic sleeve 41 is uniformly deformed in the radial direction under the compression of the toothed part 421, and the inner hole thereof is reduced and continuously clamped to the outer periphery of the cable 102 in the entire circumferential direction. In order to ensure that the assembly does not follow the turning angle during clamping, the annular abutment table 21 is arranged on the inner side of the bending joint body 2, the annular elastic sleeve 41 forms a bearing step 411 on the outer periphery and is in surface contact with the abutment table 21, and the outer circle of the bearing step 411 is basically flush with the outer circle of the annular clamping part 42, so that the normal load is uniformly distributed in the circumferential direction and a stable friction coupling is provided.

[0036] The inward retraction end of the toothed part 421 is integrally formed with an outward protrusion 4211, and the surface of the extrusion slope 122 is arranged with a plurality of grooves 1221 (four in this embodiment) in the circumferential direction. When the bending joint body 2 is screwed relative to the second accommodating section 14, the surface contact friction between the bearing step 411 and the annular abutment table 21 is higher than the contact friction between the outward protrusion 4211 and the groove 1221, so that the cable 102 locking part 4 is kept angularly positioned relative to the bending joint body 2, and the outward protrusion 4211 sequentially crosses the grooves 1221 to form an intermittent audible / tactile prompt that can be perceived. This structure provides feedback on the assembly progress and end approach without affecting the radial inward retraction stroke, which is beneficial to repeated and consistent tightening operations in oil, narrow workstations.

[0037] As Figure 10 and Figure 11As shown, further preferably, the bending joint body 2 is integrally machined or cast from a conductive metal, and coaxially provided with an annular clamping groove 22 on the inner circumferential wall of the cable 102 exit end away from the second accommodating section 14. The clamping groove can be rectangular or rounded rectangular in cross section and deburred to provide a clear axial positioning surface and circumferential limiting surface in the assembly direction, while serving as a low-resistance contact band between the metal parts. The cylindrical conductive terminal 7 is coaxially inserted from the exit end direction, with elastic windows and a plurality of elastic clamping pieces 71 integrally extended on the side wall. During assembly, the clamping pieces are folded outward beyond the clamping groove edge and then spring back into the groove, completing the axial positioning and circumferential locking of the terminal, and forming a stable conductive path on the metal-to-metal surface / line contact. To improve the anti-vibration and coaxial retention capability, the outer wall of the cylindrical conductive terminal 7 is also integrally formed with an elastic protrusion 73 that establishes an interference abutment with the inner wall of the bending joint body 2 in the radial direction, preferably in the form of a circumferentially continuous rib or a plurality of angularly distributed segmented bulges, to provide additional radial support and frictional damping; the clamping piece-annular clamping groove 22 bears the main axial locking, and the outer wall elastic protrusion 73 bears the radial support and micro-vibration suppression, both of which cooperate to maintain reliable electrical contact and geometric coaxiality of the terminal under thermal expansion and contraction and mechanical disturbance.

[0038] As shown, Figure 12 The inner side of the cylindrical conductive terminal 7 is arranged with an elastic shielding contact piece 72, which is in the form of a multi-finger spring or an annular wave spring in the circumferential direction and lightly pressed out towards the terminal inner cavity, for forming a circumferential elastic fit with the metal shielding layer 1021 of the cable 102. After the cable 102 is inserted and the shielding layer 1021 is located in the corresponding area of the terminal inner cavity, the elastic shielding contact piece 72 automatically adheres to the outer surface of the shielding layer 1021 under the action of its own pre-pressure, enclosing a continuous annular electrical connection band; this fit has self-adaptive capability to the shielding layer 1021 outer diameter tolerance, ovality and assembly deviation, can maintain stable contact pressure under bending, vibration and temperature change, and reliably connects the shielding layer 1021 to the joint body through the metal contact path between the terminal and the bending joint body 2, realizing the continuity of static discharge and shielding. In the overall assembly sequence, the cylindrical conductive terminal 7 is first inserted and assembled into the annular clamping groove 22 to achieve "clamping-in positioning", and the interference fit between the outer wall elastic protrusion 73 and the inner wall provides immediate angular and radial stability, and then the cable 102 is inserted and establishes circumferential contact with the elastic shielding contact piece 72, completing the electrical and mechanical dual connection.

[0039] The working principle of the embodiment is that the stop shoulder 121 formed on one side of the annular protruding part 12 in the end sleeve body 1 cooperates with the bellows 101 locking structure in the first accommodating section 13 to complete the axial positioning and one-way retreat of the end of the bellows 101; the second accommodating section 14 and the inner side cavity section of the connecting end of the elbow joint body 2 enclose the cable 102 locking chamber, the cable 102 locking piece 4 is axially compressed when the two are screwed to the end stop and is converted into a circumferential multi-point radial inward retraction through the extrusion slope 122, so that the annular elastic sleeve 41 uniformly clamps the outer sheath of the cable 102; the conductive member at the elbow joint body 2 establishes circumferential elastic contact with the shielding layer 1021, and constitutes a short path electrical connection of shielding / grounding; the rib groove 1221 on the extrusion slope 122 cooperates with the outer protruding block 4211 at the inward retraction end of the toothed part 421 to provide an indexable prompt during the screwing process. Thus, the end of the bellows 101, the end of the cable 102 and the shielding lead-out form a continuous and stable force and conductive link in the same connecting piece.

[0040] The assembly steps are preferably as follows: firstly, pre-assembly is completed on the side of the end sleeve body 1, the elastic locking member 16 is sleeved from one end of the first accommodating section 13, the outer positioning protrusion 1611 penetrates into the window 151 and is guided in cooperation with the side edge thereof, a preset assembly gap 5 is maintained between the outer positioning protrusion 1611 and the window 151; the annular elastic member 6 is arranged at the stop shoulder 121 and abuts against the axial end face of the elastic locking member 16; the cable 102 locking member 4 is arranged in the second accommodating section 14, the annular clamping member 42 is coaxially attached to the annular elastic sleeve member 41, and the bearing step 411 faces the abutting table 21 of the bent joint body 2. Then, the pre-assembly of the conductive unit is completed on the side of the bent joint body 2: the cylindrical conductive terminal 7 is coaxially pushed from the direction of the cable 102 leading end, the elastic clamping sheet 71 is clamped into the annular clamping groove 22 and electrically connected to the body, the elastic protrusion 73 of the terminal outer wall is in interference abutment with the inner circumferential wall, and the elastic shielding contact sheet 72 faces the terminal inner cavity. When field wiring, the corrugated pipe 101 is first pushed into the first accommodating section 13 along the end sleeve body 1, the annular groove of the corrugated pipe 101 is engaged with the inner side sharp clamping tooth 1612 after passing over the peak under the guidance of the lead-in slope, the end face is axially positioned by abutting against the stop shoulder 121, and the annular elastic member 6 maintains the mechanism in the stretched position to limit the elastic clamping tooth 161 expansion. Then, the cable 102 is inserted into the through cavity from one side of the end sleeve body 1 and enters the bent channel, so that the shielding layer 1021 is located in the corresponding area of the cylindrical conductive terminal 7 and is in circumferential elastic attachment with the elastic shielding contact sheet 72. Finally, the bent joint body 2 is aligned with the second accommodating section 14 and is screwed along the thread, the bearing step 411 and the abutting table 21 form a surface contact and friction coupling during the screwing process, the axial space of the cable 102 locking chamber is compressed, the toothed part 421 is guided to radially retract along the extrusion slope 122, and the annular elastic sleeve member 41 uniformly deforms radially to clamp the cable 102 outer sheath; the outer protruding block 4211 successively crosses the rib groove 1221 to generate intermittent prompt sound, until a stable clamping and sealing interface is established at the end stop position, and the conductive path is closed through the shielding layer 1021-cylindrical conductive terminal 7-bent joint body 2.

[0041] When the maintenance is unlocked, the bent joint body 2 is unscrewed in reverse to release the axial compression of the cable 102 locking member 4, the annular elastic sleeve member 41 rebounds to release the clamping force of the cable 102; when the corrugated pipe 101 needs to be removed, the mechanism is turned into the folding position by pressing from the outside of the end sleeve body 1, the second protruding section 16112 is exposed relative to the stop window edge 1511, the expansion limit of the elastic clamping tooth 161 by the window 151 is released, the elastic clamping tooth 161 is controlled to expand and separate from the annular groove under the action of the pulling direction load and the tooth-groove slope reaction force, and the corrugated pipe 101 can be pulled out without damage; after the pressing force is released, the annular elastic member 6 pushes the mechanism to reset to the stretched position, providing the same geometric reference for reassembly. The above assembly / dismounting path is independent and repeatable, which facilitates stable and consistent operation in a small or oily site. Embodiment

[0042] As Figures 13 to 16 shown, the overall structure and assembly path of this embodiment is basically the same as that of Embodiment 1, only the locking structure of the bellows 101 and the grounding lead-out mode adopt a parallel scheme: the first accommodating section 13 is threadedly clamped by the body base section 17 and the snap ring section 18, and the clamping pieces are axially pressed against the annular elastic sleeve 19. The inner peripheral wall of the cable 102 lead-out end of the elbow joint body 2 is provided with an annular clamping groove 22, and a triangular spring conductive terminal 8 is used instead of the cylindrical conductive terminal 7. The rest of the components and matching relationship are the same as those of Embodiment 1, and will not be repeated here.

[0043] As Figures 13 to 15 shown, at the end of the bellows 101, the annular elastic sleeve 19 is a barrel-shaped piece made of rubber, which is placed between the body base section 17 and the snap ring section 18 and uses the end face as the stress interface. During assembly, the two sections are screwed to the end stop, and the limiting shoulder 181 on the inner side of the outer end of the snap ring section 18 and the body base section 17 jointly apply axial pressure to the annular elastic sleeve 19. Under the coupling action of axial pressure and radial constraint, the sharp clamping teeth 191 on the inner periphery of the annular elastic sleeve 19 are collectively radially biased inward and form a circumferential continuous engagement with the annular groove on the outer periphery of the bellows 101, thereby establishing a composite locking of axial retreat and circumferential limiting. The end stop position is determined by the limiting shoulder 181 and the opposite end face geometry, and can repeatedly limit the pre-tightening travel; unscrewing the snap ring section 18 in the opposite direction releases the axial pressure on the annular elastic sleeve 19, allowing the inward bias of the sharp clamping teeth 191 to fall back, and the bellows 101 can be pulled out under the pulling force, forming a detachable locking / unlocking path. The overall sleeve configuration of the annular elastic sleeve 19 forms a circumferential sealing band between the teeth and the wave crests / troughs while being locked, which is beneficial to improve the waterproof and dustproof capability of the first accommodating section 13; the body base section 17 and the snap ring section 18 can be made of metal or engineering plastic material, and the internal and external threads and the end face stop are collectively used to ensure coaxiality and uniformity of stress.

[0044] As Figure 13 grade Figure 16As shown, the cable 102 outgoing end inner wall of the bent joint body 2 is processed into an annular clamping groove 22, and the triangular spring conductive terminal 8 is an annular elastic member 6 with a triangular radial section and opposite annular base edges and annular top edges. During assembly, the annular base edges of the triangular spring conductive terminal 8 are first embedded into the annular clamping groove 22, and the stable electrical contact and circumferential limiting with the bent joint body 2 are realized through the radial elastic self-centering of the wedge-shaped outer shape; then the cable 102 is inserted, so that the shielding layer 1021 is located in the terminal inner cavity corresponding area, and the annular top edges form continuous lamination to the shielding layer 1021 under the action of the circumferential elastic pre-pressure of the annular top edges, so as to establish a short path, low impedance electrical connection between the "shielding layer 1021-triangular spring conductive terminal 8-bent joint body 2". The terminal is an overall elastic ring structure, which can adapt to the outer diameter tolerance and ovality of the shielding layer 1021, maintain the contact pressure and coaxiality; during disassembly, the terminal is only taken out or pressed in from the outgoing end to complete replacement, and the embedded cooperation with the annular clamping groove 22 ensures the consistency and vibration resistance stability of repeated assembly.

[0045] The above is the preferred embodiment of the present application, which does not limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cable connector, characterized in that, Cable connectors for connecting corrugated conduits include: The end sleeve body has a through-hole receiving cavity, and an annular protrusion coaxial with the cavity axis is provided in the receiving cavity to divide the receiving cavity into an adjacent first receiving segment and a second receiving segment along the axial direction. The annular protrusion forms an axial stop shoulder on the side facing the first receiving section, which is opposite to the end of the bellows. The first accommodating section is provided with a bellows locking structure that mates with the outer periphery of the bellows connection end. The bellows locking structure is used to lock into the circumferential groove of the bellows. The bending connector body has a bending channel extending along its interior; the end sleeve body and the bending connector body are detachably connected by a connecting coupling structure, and after the two are connected, they jointly define a through chamber extending from the first receiving section through the second receiving section and into the bending channel. The cable locking chamber is defined by the second accommodating section and the inner cavity of the connecting end of the bending connector body. A cable locking element for clamping the outer periphery of the cable is provided in the cable locking chamber.

2. The cable connector according to claim 1, characterized in that, The bellows locking structure includes: A locking seat sleeve forms at least a portion of the circumferential sidewall of the first receiving section, and the circumferential wall is provided with a plurality of axially extending openings. An elastic locking member is disposed on the circumferential inner side of the first receiving section and is engaged with the locking seat sleeve. The elastic locking member includes a plurality of elastic locking teeth corresponding to each opening. Each elastic locking tooth includes an outer positioning protrusion and an inner pointed locking tooth. The outer positioning protrusion penetrates into the corresponding window and engages with the window positioning; The inner pointed teeth protrude radially into the first accommodating section, including an inlet inclined surface along the bellows insertion direction and a stop surface opposite to the insertion direction, for engaging with the circumferential groove on the outer periphery of the bellows. The elastic locking teeth can undergo radial elastic displacement at the window opening.

3. The cable connector according to claim 2, characterized in that, The outer positioning protrusion and the window are provided with a preset assembly gap along the axial direction in the assembled state, so that the locking seat and the elastic locking member can move relative to each other between the stretched position and the retracted position. The end of the window furthest from the second accommodating section is provided with a stop window edge; The outer positioning protrusion includes a first protrusion section and a second protrusion section arranged adjacent to each other along the axial direction, wherein the outward extension height of the first protrusion section is greater than the outward extension height of the second protrusion section, and the second protrusion section is located on the side away from the second receiving section along the axial direction, corresponding to the stop window edge; When the locking seat and the elastic locking member are in the stretched position, the second protruding section partially or completely abuts against the edge of the stop window to limit the radial displacement of the elastic locking teeth. When the locking seat and the elastic locking member are in the retracted position, the second protruding section is exposed outside the stop window to allow the elastic locking teeth to undergo radial displacement.

4. The cable connector according to claim 3, characterized in that, The stop shoulder is provided with an annular elastic element, which abuts against the axial end face of the elastic locking element toward the second receiving section and is axially compressed in the retracted position.

5. The cable connector according to claim 1, characterized in that, The bellows locking structure includes: A body base section and a fastening ring section are provided at the first accommodating section and are threadedly connected to each other. The outer end of the inner side of the fastening ring section is provided with a limiting shoulder. An annular elastic sleeve is sandwiched between the body base section and the fastening ring section, and pointed locking teeth are provided along its inner circumference. When the main body base section and the fastening ring section are screwed together along the thread to the end stop position, the limiting shoulder and the main body base section axially press the annular elastic sleeve, so that the pointed locking teeth are radially inward and lock into the circumferential groove on the outer periphery of the bellows.

6. The cable connector according to any one of claims 1 to 5, characterized in that, The cable locking component includes: An annular elastic sleeve disposed in the cable locking chamber defines a cable channel on its inner circumference. A ring clamping member is sleeved on the outer periphery of the ring elastic sleeve. The ring clamping member is provided with a plurality of radially retractable toothed portions spaced circumferentially, and each toothed portion has an inwardly retracted end facing the first receiving section. The annular protrusion forms a compression slope on the side facing the second accommodating section, and the compression slope mates with the inward ends of each toothed portion. When the bending connector body and the second accommodating section are aligned to the end position, the axial accommodating space of the cable locking chamber is compressed, thereby applying axial pressure to the cable locking member, causing the inward ends of the multiple teethed portions to be guided radially inward along the compression slope, so that the annular elastic sleeve is subjected to uniform radial inward deformation under circumferential force, reducing the inner diameter of the cable channel and circumferentially clamping the outer periphery of the cable.

7. The cable connector according to claim 6, characterized in that, The inner end of the toothed portion is provided with an outer protrusion; the surface of the extrusion slope is provided with circumferentially spaced grooves. The bending joint body is provided with an annular abutment platform, and the outer periphery of the annular elastic sleeve is provided with a bearing step that abuts against it, and the outer peripheral surface of the bearing step is flush with the outer peripheral surface of the annular clamping member. The bent joint body is screwed to the second accommodating section via a thread; During the process of the bending connector body docking with the second receiving section and rotating relative to it, the frictional engagement between the bearing step and the annular abutment platform is greater than the contact friction between the outer protrusion and the groove, so that the cable locking member maintains angular positioning relative to the bending connector body, and the outer protrusion crosses the groove in sequence, producing an intermittent locking prompt sound.

8. The cable connector according to claim 7, characterized in that, The outer surface of the end sleeve body is provided with anti-slip texture.

9. The cable connector according to any one of claims 1 to 5, characterized in that, The bending connector body is a conductive metal part, and an annular groove is provided on the inner peripheral wall of the cable lead-out end away from the second accommodating section. A cylindrical conductive terminal is coaxially assembled inside the cable lead-out end. The side wall of the cylindrical conductive terminal is provided with an elastic snap-fit ​​piece. The elastic snap-fit ​​piece is snapped and positioned with the annular slot and makes electrical contact with the bent connector body. The cylindrical conductive terminal is provided with an elastic shielding contact piece, which faces the inner cavity of the terminal and is used to make circumferential contact with the metal shielding layer of the cable to electrically connect the metal shielding layer to the bending connector body.

10. The cable connector according to any one of claims 1 to 5, characterized in that, The bending connector body is a conductive metal part, and an annular groove is provided on the inner peripheral wall of its cable lead-out end. A triangular spring conductive terminal is coaxially disposed inside the cable lead-out end. The triangular spring conductive terminal is an annular elastic element with a triangular radial cross section and opposite annular base edge and annular top edge. The annular base edge is embedded in the annular groove and makes electrical contact with the bending connector body. The annular top edge faces the inner cavity of the terminal and is used for circumferential elastic contact with the metal shielding layer of the cable.

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