35results about How to "Prevent exit" patented technology

The invention belongs to the technical field of underwater concrete grouting repair, and particularly relates to an underwater grouting head and an underwater grouting device.The underwater grouting head comprises a grouting nozzle, a first grouting connector and an elastic sleeve, the grouting nozzle and the first grouting connector are both arranged in an axial through mode so as to form a channel for grout to flow, and the elastic sleeve is arranged in the channel; one end of the grouting nozzle is axially arranged in the first grouting connector in a penetrating mode and is in axial sliding connection with the first grouting connector, the grouting nozzle is sleeved with the elastic sleeve, one end of the elastic sleeve is fixed to the grouting nozzle, and one end of the first grouting connector is axially arranged between the other end of the elastic sleeve and the grouting nozzle in a penetrating mode. A first conical surface with the outer diameter gradually increasing towards the direction where the other end of the first grouting connector is located is arranged on the outer side wall of the end of the first grouting connector, and a groove is formed in the side, away from the elastic sleeve, of the first conical surface on the outer side wall of the first grouting connector. And the underwater operation difficulty of the robot is reduced, the repair operation efficiency is improved, and the repair quality is guaranteed.

The utility model provides a motor protector and a high-low gear current regulation limiting device thereof, the high-low gear current regulation limiting device comprises a first limiting piece and a second limiting piece which are arranged on a shell; the flow adjusting knob is rotationally installed on the shell, a gear block is arranged on the flow adjusting knob and rotates between the first limiting piece and the second limiting piece, a first gear face and a second gear face are arranged on the two sides of the gear block respectively, and when the first gear face of the gear block abuts against the first limiting piece, the second gear face of the gear block abuts against the second limiting piece. The rotating position of the current adjusting knob corresponds to the low-level current value mark; when the second gear face abuts against the second limiting piece, the rotating position of the current adjusting knob corresponds to the high-position current value mark. The structure can ensure that the current adjusting knob rotates within a determined range, so that the situation that the current adjusting knob rotates excessively due to misoperation of a user is avoided, and the reliability is improved.

The utility model discloses a counter weight device for storage tank construction and a platform thereof, which comprises a storage tank body, two bases mounted on the storage tank body, a hoisting support mounted on the bases, a fixing mechanism mounted on the hoisting support, a locking mechanism mounted on the fixing mechanism, a shielding mechanism mounted on the hoisting support, and a lifting mechanism mounted on the shielding mechanism. The lifting mechanism comprises two vertical rods, and the two vertical rods are installed on the two bases respectively. Through the arrangement of the bases, the vertical rods, a transverse adjusting rod, a hanging basket, a fixing plate, a partition plate, an inserting rod, a balancing weight and other structures, the angle adjusting mechanism is installed on the shielding mechanism, and the angle adjusting mechanism is installed on the angle adjusting mechanism. The transverse adjusting rod is fixed in use through the balancing weight at one end of the transverse adjusting rod, so that the stability and safety of the hanging basket in the use process can be effectively guaranteed, meanwhile, the balancing weight can be rapidly installed on the partition plate through the multiple inserting rods installed on the partition plate, and it can be guaranteed that in the use process of the balancing weight, the safety of the hanging basket is guaranteed. And the phenomenon of scattering is avoided.

The utility model discloses an intelligent weighing cabinet for selling parts, which comprises a cabinet body and cabinet doors, a plurality of cabinet doors are arranged at the front end of the cabinet body, weighing mechanisms are arranged in the cabinet body and at the inner bottom ends of the cabinet doors, storage boxes are placed at the upper ends of the weighing mechanisms, fixing pieces are arranged on the lower sides of the storage boxes, and the fixing pieces are connected with the cabinet doors. Rotating blocks are arranged on the surfaces of the lower ends of the inner walls of the multiple storage boxes, rotating rods penetrate through the storage boxes to fix the rotating blocks and the fixing pieces, the rotating blocks can drive the fixing pieces to rotate through the rotating rods, fixing grooves are formed in the upper ends of the weighing mechanisms, and the storage boxes are fixed by inserting the fixing pieces into the fixing grooves. The fixing piece on the lower side of the storage box is inserted into the fixing groove in the upper end of the weighing mechanism to be fixed, and the situation that the weighing mechanism weighs inaccurately due to the fact that the storage box is shifted when a client moves the storage box when taking articles can be prevented.

A connecting structure of a spinning wire and a circuit board comprises at least one spinning wire, gum and the circuit board. The spinning wire comprises a spinning yarn and a metal wire, and the back glue can be combined with the spinning wire. A through hole is formed in a circuit board, and the diameter D of the through hole, the wire diameter d of a spinning wire, the wire diameter dmin after the spinning wire is stretched and contracted and the thickness t of the jig meet the following relational expression: 2dgt; dgt; 2dmin + t. During assembly, the spinning wire with gum can be aligned with the through hole of the circuit board, the part of the spinning wire is squeezed into and penetrates through the through hole by a jig, the part, penetrating through the through hole, of the spinning wire forms an expanded round-hole-shaped protruding line segment, the spinning wire can generate friction force and forward pushing force on the inner wall of the periphery of the through hole, and the expanded protruding line segment is not prone to deformation. The spinning guide line can be prevented from retreating along with the jig. And the fixing back adhesive is adhered to the circuit board and the protruding line segments. The spinning lead and the circuit board can be connected, fixed and conducted, soldering tin is not needed, and environmental protection is achieved.

The utility model relates to a motorcycle stepless speed change clutch, concretely relates to a moving wheel bushing structure, including moving wheel, bush, the moving wheel has the central hole, the moving wheel central hole is provided with the shaft sleeve in interference fit, the bush interference fit is arranged in the shaft sleeve, adds the shaft sleeve structure between the moving wheel central hole and the bush, and the shaft sleeve has the safe interference amount with the moving wheel, and will not be loose, and the thermal expansion coefficient of the bush and the shaft sleeve is consistent, and will not be loose and turn, so can effectively prevent the bush thermal expansion loose, wear, exit problem, increased the reliability of the clutch, greatly improved the life of the clutch.

The utility model belongs to the technical field of multimedia display, and particularly relates to a multimedia interaction table which comprises a main body, a screen is arranged at the upper end of the main body, clamping blocks are arranged on the two sides of the screen, clamping grooves are formed in the two sides of each clamping block, a rotating handle is arranged on one side of the main body, a shell is arranged at the lower end of the main body, and the rotating handle is arranged in the shell. The two sides of the shell are each provided with two third screws, the two sides of the shell are each provided with a connecting block, one side of each connecting block is provided with a first screw, the two sides of the main body are each provided with a supporting plate, and by means of trapezoidal arrangement of limiting blocks, the extending plates are prevented from completely retreating from the interiors of the supporting plates; through the arrangement of clamping blocks and limiting grooves, the main body is effectively supported, so that the main body is prevented from falling off during overturning; through the arrangement of the rotating shaft, the main body can be overturned conveniently, through the arrangement of the shell, the maintenance and detection area of maintenance personnel is increased, and then the main body can be rapidly detected and maintained conveniently.

The present invention discloses a die-casting mold removal production line, which includes a placement table and a cleaning device. The first rack and the second rack of the cleaning device are installed at both ends of the workbench, and the first driven gear and the second driven gear are respectively fixedly sleeved on both ends of the central mounting shaft of the cleaning roller; one end of the first mounting frame and the second mounting frame are respectively rotatably connected to both ends of the central mounting shaft, and the other ends thereof are respectively connected to the inner wall of the shell; the first driving gear is rotatably connected to the first mounting frame, and the second driving gear is rotatably connected to the second mounting frame; the first rack is meshed with the first driving gear, and the first driven gear is meshed with the first driving gear, and the second rack, the second driving gear and the second driven gear are symmetrically arranged. The cleaning device is also provided with a chip cleaning mechanism, which is installed on the side of the shell far from the cylinder. By setting the cleaning device, the placement table can be cleaned while the workpiece is pushed, saving manual cleaning time.

The utility model discloses a power supply signal male end connector, which comprises a first power supply module, a telecommunication module, a second power supply module and a positioning module, and is characterized in that the first power supply module comprises a power supply base body unit, and a first power supply terminal and a second power supply terminal which are assembled and connected with the power supply base body unit; and the first power supply terminal and the second power supply terminal are respectively provided with a power supply main body, an elastic connecting arm and an anti-retreating structure. The first power supply terminal and the second power supply terminal are installed in the power supply main body, the stability of the first power supply terminal and the second power supply terminal in the power supply main body is ensured through the arrangement of the anti-retreating structure, and when the first power supply module and the second power supply module are inserted into a connector female end, the first power supply terminal and the second power supply terminal are connected. Due to the arrangement of the anti-retreating structure, the influence of reverse thrust caused by insertion on the first power supply terminal and the second power supply terminal can be avoided, so that the first power supply terminal and the second power supply terminal cannot retreat from the power supply main body, and the first power supply terminal and the second power supply terminal can be ensured to be firmly and stably fixedly assembled in the power supply main body.

The invention discloses a cooperative control method and system for self-adaptive cruise and abrupt slope slow descent of a vehicle. The cooperative control method comprises the steps that whether an abrupt slope slow descent switch is turned on or not is judged; when the abrupt slope slow descent switch is turned on, whether the vehicle meets the abrupt slope slow descent condition or not is judged based on a preset working mode, and vehicle energy recovery torque and hydraulic braking force are obtained; and when the abrupt slope slow descent condition is met, the actual vehicle speed of the vehicle is adjusted and controlled based on the abrupt slope slow descent target vehicle speed. Cooperative control is constructed by the abrupt slope slow descent function, the energy recovery function and the self-adaptive cruise function; the braking force of the whole vehicle can be adjusted in real time through hydraulic control, the energy recovery function can be synchronously activated, braking energy is recovered in the braking process, and the energy utilization rate and the vehicle economy are improved; meanwhile, in the steep slope slow descent activation process, the system can dynamically adjust the braking force by recognizing the expected vehicle speed input by the driver, the downhill speed change requirement of the driver is rapidly met, and the safety and stability of vehicle downhill driving are guaranteed.

The utility model belongs to the technical field of lighting equipment, and particularly relates to a buckle assembly, a lamp and an automobile. The buckle assembly is applied to the lamp and comprises a first connecting piece, a retaining piece and a second connecting piece, the first connecting piece is provided with an assembling side and a locking side which are opposite, the first connecting piece is provided with a clamping hole, and the clamping hole penetrates through the assembling side and the locking side; the retaining piece is connected with the first connecting piece and located on the locking side of the first connecting piece. The second connecting piece is provided with a first side surface and a second side surface opposite to each other, and is provided with a clamping block protruding out of the first side surface; the second connecting piece penetrates through the clamping hole, the clamping block is located on the locking side of the first connecting piece and erected on the first connecting piece, and at least part of the retaining piece abuts against the second side face of the second connecting piece. According to the buckle assembly, reliable assembly between components connected through the buckle assembly can be guaranteed.

The utility model belongs to the field of automobile fuse boxes, and particularly relates to an anti-retreating secondary lock for an automobile fuse box terminal, which comprises a fuse box, a fuse, a terminal and a secondary lock assembly, the fuse is mounted at the top of the fuse box, the terminal is mounted in the fuse box, the top end of the terminal is in contact with the fuse, and the secondary lock assembly comprises a plurality of lock plates. The locking plate is inserted into the fuse box from bottom to top, the top end of the locking plate abuts against the lower end of the terminal, and the locking plate is fixed in the fuse box in a buckling connection mode. In addition, the action of installing the locking plate into the fuse box can further push the terminal which is not assembled in place to the locking position again, and therefore the situation that the terminal wire harness is withdrawn from the fuse box due to the fact that the terminal wire harness is subjected to external force or the terminal is not assembled in place is avoided.

The present invention discloses an arthroscopic suture implant, which relates to the technical field of implants. The arthroscopic suture implant comprises a base plate, a through hole is provided on the top of the base plate, and a first limiting component and a second limiting component for limiting the suture are arranged on the top of the base plate, the first limiting component comprises a first fixed plate and a first movable plate, and a threading groove is provided on the side wall of the first fixed plate, the second limiting component comprises a second fixed plate and a second movable plate, and the first movable plate and the second movable plate form a movable plate group. The arthroscopic suture implant improves the point contact of traditional suture knotting into surface release, promotes the healing of tendons or ligaments and bones, and brings about an improvement in surgical efficacy. At the same time, there is no need to repeatedly tie knots, and the thread locking can be completed by only pulling the thread tail, which greatly shortens the operation time. In addition, it can be used for sutures of different thicknesses, has stronger applicability, and is more convenient to use.

The utility model relates to acoustics engineering and noise control field discloses a kind of transparent variable combination narrow-frequency sound-absorbing device, including bottom plate, the bottom plate front and rear side is provided with side plate two, the bottom plate left and right sides are provided with side plate one, the bottom plate front and rear ends are fixedly connected with horizontal plate one, two The horizontal plate one between is fixedly connected with horizontal plate two, two The horizontal plate two ends are provided with locking assembly, the locking assembly includes frame, the frame is fixedly connected in side plate one inner side, the frame bottom is fixedly connected with support plate, the support plate inside is equipped with sliding slot, the frame inside is slidably connected with cylinder. In the utility model, bottom plate and side plate are made of transparent acrylic high-molecular sound-absorbing material, which not only meets the requirement of line-of-sight penetration, but also has basic sound-absorbing capacity. The design of large circle middle cavity and small circle special round hole of core sound insulation board can dissipate energy and weaken specific narrow-frequency noise.

The utility model discloses a rotary fixing structure of a connector, which comprises a shell and a plug, the plug is sleeved at the tail part of the shell, a plurality of clamping keys are arranged on the outer side wall of the tail part of the shell, the plug is provided with clamping grooves corresponding to the clamping keys in the axial direction, and the clamping grooves extend from tail to head. A rotating groove is formed in the circumferential side wall of the head of the clamping groove in the circumferential direction, and the clamping key is clamped in the rotating groove. The utility model has the beneficial effects that the clamping key and the rotating groove work in a rotating locking mode, so that the product assembly efficiency is improved, and the cost is reduced; the rotating groove is provided with a narrow groove and a containing groove, the clamping key is provided with a wedge-shaped head portion so that the narrow groove can be extruded conveniently, after the plug rotates reversely, the retaining step can abut against the retaining end face, the clamping key is prevented from retreating from the rotating groove, and reliability of installation of the plug and the tail of the shell is guaranteed.

The invention provides an electric connector, which comprises an insulation body, a plurality of conductive terminals and a locking piece, the insulation body is provided with a base body part and a plurality of butt joint columns formed by forward extension from the base body part, the plurality of butt joint columns are arranged in the transverse direction, the conductive terminals are fixed in the corresponding butt joint columns, and the locking piece is arranged on the base body part. The locking piece is fixed on the insulating body so as to stop the conductive terminals; the locking piece is provided with a substrate part and a plurality of stopping convex parts formed by extending from the substrate part, the substrate part is in a flat plate shape and covers the base body part within the coverage range of the outer contour of the substrate part, and the stopping convex parts are inserted into corresponding slots arranged on the insulating body to stop the conductive terminals. The electric connector is high in structural strength and can be suitable for large-current transmission.

The utility model discloses a drilling dust-proof device for building, and relates to the technical field of construction tools, the drilling dust-proof device comprises a drilling machine and a dust-proof device, the dust-proof device is sleeved on the drilling end of the drilling machine, and the drilling dust-proof device is mainly used for preventing drilling dust from splashing in the drilling process of the drilling machine, preventing dust from flying and ensuring the cleanness in the working process. Specifically, the dust raising prevention device is provided with a blowback part, the blowback part can be driven by the driving of the drilling machine to introduce air flow, and dust which is accumulated at the attaching position of the dust raising prevention device and the wall and is drilled down is blown into the dust collecting part, so that a drill bit is prevented from retreating from a hole after drilling operation is completed, and the drilling efficiency is improved. Accumulated dust scatters from the wall surface and pollutes the working environment.

This utility model discloses a child stroller that is easy to assemble, which facilitates assembly and prevents accidental unlocking of the locking mechanism. The stroller features a handle assembly connected to a connecting tube via an unlockable locking mechanism, or the connecting tube connected to a base via the same mechanism. The locking mechanism includes a resilient locking head and a locking pin mating part. The resilient locking head is mounted on the connecting tube, which has a hole for the head of the resilient locking head to extend out. The locking pin mating part includes an inner wall and an outer wall. The inner wall forms an assembly cavity for the end of the connecting tube to be inserted, and a channel for the head of the resilient locking head to extend into it. The outer wall is connected to the inner wall, and a button is provided on the outer wall. Most of the button's edge is separated from the outer wall, while a portion of the button is connected to it. The button is formed on the outer wall and can elastically deform to press and activate the head of the resilient locking head.

The invention discloses automatic polishing equipment and a method thereof.The automatic polishing equipment comprises a workpiece loading unit which is provided with at least one workpiece loading position used for loading a workpiece, and the workpiece loading position is provided with a window part allowing a to-be-polished area of the workpiece to be exposed outside; one end of the conveying unit is provided with a receiving position used for receiving the workpiece loading units, the other end of the conveying unit is provided with a picking position used for allowing a picking unit to pick up the workpiece loading units, and the conveying unit conveys the workpiece loading units at the receiving position to the picking position; the polishing unit is provided with a polishing part for grinding and polishing the to-be-polished area exposed at the window part; the picking unit is configured to be used for picking the workpiece loading unit at the picking position and transferring the workpiece loading unit to the polishing unit, and is used for picking the workpiece loading unit at the polishing unit and transferring the workpiece loading unit to a target position; and the control unit is used for receiving and processing data from each unit and scheduling each unit to work.

The utility model discloses a vascular puncture dilator for ECMO relates to dilator technical field. Specifically including dilatation spare and adjusting spare, dilatation spare is a hollow cylinder, and it has open line one in length direction, adjusting spare sets up in the inner wall of dilatation spare, and it is equipped with the open line two of placing guide wire in length direction, wherein, adjusting spare can rotate relative to the axis of dilatation spare, and make open line two and open line one can be selected coincident, to with guide wire from open line two and open line one separate. Dilatation spare and adjusting spare are provided with open line one and open line two respectively, and guide wire can move from open line one to open line two, when open line two and open line one coincide, dilatation spare removes the puncture part, can directly from guide wire on the change, avoided the dilator and needed the guide wire to exit, reduced the time of dilator from guide wire and took out, reduced the amount of bleeding of patient blood vessel after dilatation.

This utility model relates to the field of high-voltage power transmission and distribution technology, and discloses an adjustable-capacity high-voltage series compensation device, including a core compensation unit, a bypass protection unit, a damping circuit, and a control system. The core compensation unit has at least two parallel capacitor branches controlled by independent switching switches for step-wise adjustment of the compensation capacity. The control system includes a safety interlocking system, which includes a first interlocking module and a second interlocking module that are independent of each other. The first interlocking module is used to forcibly lock all independent switching switches in the open state when the bypass switch is closed; the second interlocking module is used to prohibit operation of the incoming and outgoing line isolating switches of the device when the bypass switch is not closed. This utility model, by combining hardware forced interlocking with intelligent control, eliminates the risk of misoperation and significantly improves the safety, reliability, and adaptability of the device operation to the power grid.

The utility model discloses a rapid wiring structure and a switch socket, the rapid wiring structure comprises a housing, a button, a conductive assembly and an elastic pressing member, the button is arranged on the housing and is provided with a pressing part; the conductive assembly is arranged on the shell and comprises a wire plugging terminal for a wire to be plugged in, and the wire plugging terminal is provided with a wire penetrating hole. The elastic pressing part is arranged on the conductive assembly and comprises an elastic elastic pressing part, the upper part of the elastic pressing part extends to correspond to the wire penetrating hole of the wire plugging terminal, and the elastic pressing part can elastically press a wire penetrating through the wire penetrating hole to the conductive assembly; the upper portion of the elastic pressing portion inclines towards the direction away from the threading hole, the upper portion of the elastic pressing portion is provided with a clamping position capable of clamping a wire, the elastic pressing portion is provided with a pressed portion corresponding to the pressing portion, the pressed portion and the clamping position are staggered, the clamping position is matched with the inclined elastic pressing portion to prevent the wire from retreating from the wire plugging terminal, and rapid plugging of the wire is achieved. And the wiring efficiency is improved.

The utility model discloses a high-reliability double-line fine-thread dry wall nail, and belongs to the technical field of fasteners. Comprising a dry wall nail body, four non-return assemblies are arranged on the outer side of the bottom end of a nail head and used for assisting in fixing the dry wall nail body, and a nail point assembly is arranged at one end of the dry wall nail body and used for positioning and straightening the dry wall nail body. The nail point tip and the positioning tip in the nail point assembly are arranged on the same horizontal plane, so that the positioning tip and the nail point tip make contact with an object at the same time, the nail point tip is prevented from obliquely punching and drilling into the object, and the use strength is improved.

The utility model belongs to the technical field of connectors, and particularly relates to a bent plug-in connector which comprises an outer shell and a contact assembly inserted in the outer shell, the contact assembly comprises an outer conductor, an insulator and a contact piece which are sequentially arranged from outside to inside, and a stop ring is inserted in the outer shell. And the stop ring is limited in the outer shell in the inserting direction of the contact assembly and is clamped on the contact assembly. By installing the stop ring on the outer shell, the contact assembly is limited on the outer shell, and the contact assembly is prevented from retreating.

A spinning wire and circuit board connecting method comprises the steps that at least one spinning wire, gum and a circuit board are provided, at least one through hole is formed in the circuit board, and the diameter D of the through hole, the wire diameter d of the spinning wire, the wire diameter dmin of the spinning wire after being stretched and shrunk and the thickness t of a jig meet the following relational expression: 2dgt; dgt; 2dmin + t; the spinning wire is placed on the back glue, then the spinning wire with the back glue is aligned with the through hole of the circuit board, and a jig penetrates through the back glue to extrude the spinning wire into and penetrate through the through hole; when the jig is taken out, the spinning wire rebounds and expands due to no stretching, so that the spinning wire is prevented from retreating along with the jig; an insulating wire can penetrate through the center of the round-hole-shaped protruding line segment to serve as a tensile supporting line, and back glue can be hot-pressed and fixed on the two faces of the circuit board respectively, so that the spinning wire and the circuit board are connected and fixed. Therefore, the spinning lead and the circuit board can be connected, fixed and conducted, soldering tin is not needed, and environmental protection is achieved.

The utility model relates to the technical field of sockets, in particular to a power socket with a self-fastening insulating cover plate, which comprises a socket body, the socket body comprises a top cover and a bottom shell, the top cover is covered in a top opening of the bottom shell, a transverse clamping groove is arranged on the side wall of the bottom shell, the side edge of the top cover bends and extends downwards, and the transverse clamping groove is arranged in the top opening of the bottom shell. A buckle is fixed on the extension sheet and is clamped into the transverse clamping groove; during assembly, the top cover is firstly placed in the top opening of the bottom shell, and then the top cover is transversely pushed towards the transverse clamping groove, so that the buckle is clamped into the transverse clamping groove; meanwhile, an inverted buckle is fixed on the bottom wall of the top cover, when the top cover is transversely pushed towards the transverse clamping groove, the buckle is clamped into the transverse clamping groove, and meanwhile, the inverted buckle moves to the inner side of the front wall of the bottom shell and abuts against and makes contact with the inner side of the front wall, so that the top cover is prevented from exiting.

The utility model relates to a seat armrest, a seat assembly and a vehicle, and relates to the technical field of vehicles. The seat armrest comprises a protective plate and a locking assembly, the protective plate is used for being connected with a seat and can rotate relative to the seat, the locking assembly can comprise a locking piece and an unlocking pull rope, the locking piece is connected to the protective plate, can move relative to the protective plate and is used for locking the protective plate on the seat, and the unlocking pull rope is connected with the locking piece and can drive the locking piece to move. And a part of the protection plate is bent towards the unlocking pull rope to form a limiting part, the limiting part is provided with a limiting hole, and the unlocking pull rope penetrates through the limiting hole. Therefore, the production cost of the seat armrest can be reduced, and the assembly efficiency can be improved.

One side wall of a female end base is provided with a lock hole, the lock hole is communicated with an installation cavity, a locking piece is installed in the lock hole, the locking piece comprises a pressing part, the upper end and the lower end of the inner end face of the pressing part are respectively provided with a protruding clamping part, a clamping groove is formed between the two clamping parts, a limiting concave part is clamped in the clamping groove, and the pressing part and the limiting concave part are clamped in the clamping groove. One side wall of the female end base is further provided with a via hole, the via hole is communicated with the mounting cavity and is opposite to the lock hole, the upper side wall and the lower side wall of the via hole are provided with receding grooves, the receding grooves extend towards the lock hole, a retaining step is formed at the lock hole, the joint of the pressing part and the clamping part is provided with an elastic arm corresponding to the receding grooves, the elastic arm extends towards the pressing part, and the elastic arm is connected with the pressing part. And the elastic arm inclines towards the outer side of the pressing part. The beneficial effects of the utility model are that the locking member is provided with the clamping groove for clamping the limiting recess, so that the contact area between the locking member and the shielding assembly is large, and the locking force between the locking member and the shielding assembly is ensured.