1319 results about "First insertion" patented technology

The utility model relates to the field of folding fishing platforms, in particular to an integrated foldable storage fishing platform and fishing platform, which comprises a split type locking sleeve fixedly mounted at the top corner of a platform plate and provided with an insertion cavity for insertion of supporting legs, and the insertion cavity has an insertion direction extending from the top of the split type locking sleeve to the bottom of the split type locking sleeve. The support leg is provided with a first insertion position and a second insertion position along the insertion direction; the rotating piece is rotatably mounted in the split type locking sleeve and provided with a rotating shaft perpendicular to the insertion direction, and a penetrating cavity allowing the supporting foot to penetrate through is formed in the rotating piece; the effect of rotating the supporting legs to the back side of the table plate under the condition that the supporting legs are not completely separated is achieved through the split type locking sleeves internally provided with the rotating pieces, and the technical problems that in the prior art, a fishing table is not convenient enough to store, and the supporting legs are prone to being lost are solved.

The invention relates to the technical field of mold equipment, in particular to an improved mold structure which comprises a bottom plate, a base plate, a movable mold plate, a fixed mold plate and a runner plate, a push plate is connected to the bottom plate, a fixed plate is mounted on the bottom plate, the fixed plate is arranged between the push plate and the bottom plate, a demolding mechanism is mounted on the push plate and comprises a push cover, and the push cover is mounted on the push plate. A first insertion hole is formed in the push cover, an insertion piece is detachably installed on the fixing plate, the insertion piece comprises a connecting plate, a fixing rod is installed on the connecting plate, a second insertion hole is formed in the fixing plate, and the fixing rod is inserted into the first insertion hole and the second insertion hole to fix the push plate to the fixing plate; a top stick column is detachably installed in the push cover, an annular groove is formed in the top stick column, and the fixing rod is clamped into the annular groove of the top stick column to fix the top stick column. And mold opening and closing mechanisms are mounted on the movable mold plate, the fixed mold plate and the runner plate. The mold has the effect of improving the convenience of quick mold replacement and the mistake proofing of the sequence of mold opening and closing steps of the mold.

The invention discloses a surgical instrument and a manual reset unit adapted to the surgical instrument. The surgical instrument comprises an adaptation unit, the adaptation unit comprises a handle shell, and a first insertion opening is formed in the near end of the handle shell; the reusable power unit comprises a driving shell and a driving assembly contained in the driving shell, and a second inserting opening is formed in the near end of the driving shell; the manual reset unit is detachably connected to the power unit along the first insertion opening of the handle shell and the second insertion opening of the driving shell, the manual reset unit comprises a reset transmission assembly, and the transmission input end of the reset transmission assembly is operably connected with a reset wrench in a transmission mode; a transmission output end of the reset transmission assembly is operably in transmission engagement with the drive assembly. The manual reduction of the surgical instrument is safe and reliable, and sterile contact with the outside in the manual reduction process is achieved.

An air valve connector includes a head and a switching assembly. The head has a first insertion hole, a second insertion hole, a communicating passage, and an inlet hole. The first insertion hole is provided with a first airtight portion disposed between the communicating passage and the inlet hole, and a second airtight portion disposed between the inlet hole and the first port. The switching assembly includes a plunger movably disposed in the first insertion hole to alternately abut against the first airtight portion or the second airtight portion.

The invention provides an adjustable oral soft tissue traction fixing device for an apical surgery. The adjustable oral soft tissue traction fixing device comprises a dentition fixing component, a lower jaw fixing component and a soft tissue traction fixing component, the dentition fixing component is used for being fixed in the oral cavity of a subject and located at the upper end of the dentition where the operation teeth are located. The dentition fixing component comprises a buckle plate and an insertion rod; a groove is formed in the lower side of the buckle plate, and the buckle plate is buckled on the dentition through the groove; the upper end of the insertion rod is fixed to the first side of the buckle plate. The lower jaw fixing component comprises a bottom plate and a side plate; the bottom plate and the side plate are connected to form an L shape; the lower jaw fixing component is used for being fixed outside the oral cavity of a subject; first insertion holes are formed in the side plates in the vertical direction; the lower part of the inserting rod is inserted and fixed in the first inserting hole; the first end of the soft tissue traction fixing component can be adjustably fixed to the lower jaw fixing component, and the second end of the soft tissue traction fixing component is used for extending into the oral cavity of a subject so as to achieve traction and fixing of gingival soft tissue flaps.

The utility model discloses a safe waterproof wall socket, which relates to the field of wall sockets and comprises a socket body, two first jacks are arranged above the outer surface of the socket body, and a first protection assembly and a second protection assembly are respectively arranged on the outer surface of the socket body. The first protection assembly comprises a containing groove formed in one side of the first insertion hole. According to the utility model, through the arrangement of the first protection assembly, when the two-pin plug is inserted into the first jack, the plugging plate can move towards the interior of the storage groove under the pressure applied by the two-pin plug, and after the plugging plate moves into the storage groove, the plugging plate does not shield the first jack any more, and at the moment, the two-pin plug can be inserted into the first jack; meanwhile, the plugging plate moves to drive the first sliding block to slide in the first sliding groove and extrude the reset spring, so that the reset spring is compressed under stress, and after the two-pin plug is inserted, the plugging plate tightly extrudes the plug pins under the counter-acting force of the reset spring, so that the stability after the plug is inserted is improved.

A mounting device for a curtain includes a bracket, an adapter mounted to the bracket for connecting the curtain, and a cover forming an abutting block and slidably mounted to the bracket, to cover the adapter. The bracket forms a first insertion portion and defines an engaging hole. The adapter forms a second insertion portion, and a connection portion for connecting the curtain. The adapter forms an elastic tab, and a pin extends from a distal end of the elastic tab. The first insertion portion is engaged with the second insertion portion, and the pin is aligned with the engaging hole. When the cover slides to an assembly position relative to the bracket, the abutting block is abutted against a side of the elastic tab away from the bracket, to allow the elastic tab to deform toward the bracket, and allow the pin to engage in the engaging hole.

A connecting member of a universal connector includes a first insertion hole and a second insertion hole formed on from a first end surface toward a second end surface of the connecting member, and a third insertion hole and a fourth insertion hole formed on the second end surface toward the first end surface of the connecting member, whereby the insertion holes will not be affected by and damage other structures of the connecting member in the mechanical process, so as to achieve the enhancement of the convenience of processing.

To provide a highly reliable vibration isolation device capable of isolating vibration in various direction inexpensively over a wide range through simple adjustment and capable of easily controlling vibration absorption performance and damping performance.SOLUTION: A vibration isolation device includes: a bolt; a first disc spring having a first insertion hole, a first inner peripheral part and a first outer peripheral part; a second disc spring having a second insertion hole, a second inner peripheral part and a second outer peripheral part; a sleeve including a pair of end surfaces through which a bolt is inserted, that oppose to each other in the axial direction and on which the first inner peripheral part and the second inner peripheral part are nipped, respectively by using a fastening tool; and a fixation plate in which the first outer peripheral part and the second outer peripheral part are fixed in an overlapped state and a displacement region of the bolt and the sleeve is opened. The first disc spring has a plurality of first vibration isolation bodies, and the second disc spring has a plurality of second vibration isolation bodies. When vibration is input to the bolt via a vibration isolated member, each of the first vibration isolation bodies and each of the second vibration isolation bodies absorb the vibration and damp the vibration, respectively at positions apart from the sleeve.SELECTED DRAWING: Figure 2

The invention relates to the technical field of assembly type looping installation, and discloses an assembly type looping construction and installation technology which comprises a plurality of first insertion panels, a plurality of second insertion panels, a plurality of internal corner pieces and a plurality of external corner pieces which are used for forming a veneer. The first inserting panel, the second inserting panel, the internal corner piece and the external corner piece are each provided with an inserting part and a fixing part. According to the assembly type looping construction and installation technology, after the first insertion panel, the first foundation panel, the second insertion panel and the second foundation panel are arranged and the plain concrete platform is reserved, wall face fixing corner connectors, supporting fixing corner connectors and keels are pre-installed, and subsequent installation and assembly of veneers are facilitated; and the first inserting panel, the first basic panel, the second inserting panel and the second basic panel which are used for forming the veneer are matched through the inserting parts and the fixing parts to be assembled, the situation that each part is bonded after being subjected to position correction is not needed, assembling can be rapidly carried out, and the operation process is convenient.

The marine fireproof watertight door with the cooling function comprises a door plate, the door plate is rotationally connected with a closed frame, a plurality of inserting grooves are formed in the right side of the closed frame, first reinforcing mechanisms and second reinforcing mechanisms are installed on the front side of the door plate, and the second reinforcing mechanisms are located between the first reinforcing mechanisms. A controller is fixedly mounted at the bottom of the door plate, an auxiliary threaded hole is formed in the front end of the outer side of the second reinforcing mechanism, a fixing mechanism is arranged at the front end of the outer side of the second reinforcing mechanism, the first reinforcing mechanism comprises an automatic telescopic rod, a first inserting block and a first mounting shell, and the automatic telescopic rod is fixedly mounted on the first mounting shell. The output end of the automatic telescopic rod is fixedly connected with a first insertion block. The marine fireproof watertight door with the cooling function has the cooling function and is provided with multiple reinforcing mechanisms, so that the leakproofness of the door is improved, the handle is conveniently locked, and the fixing screws are conveniently placed.

The invention provides a GaN-based enhanced HEMT (High Electron Mobility Transistor) device structure and a manufacturing method thereof, a barrier stack comprises a first insertion layer, a first barrier layer, a second insertion layer, a second barrier layer, a third insertion layer and a third barrier layer which are sequentially stacked from bottom to top, the second insertion layer is used as an etching stop layer during groove etching, and the third insertion layer is used as an etching stop layer during groove etching. The thickness of the barrier layer in the groove region is reduced, so that the 2DEG concentration below the P-type GaN part can be reduced, and the threshold voltage of the device is improved; the third insertion layer is used as an etching stop layer when the P-type GaN layer is patterned, so that the over-etching depth of the barrier layer can be reduced, the retention thickness of the barrier layer can be improved, and the probability that electrons tunnel to the surface of the barrier layer can be reduced; due to the existence of the third barrier layer, the third insertion layer can be effectively prevented from being etched through, direct contact between the passivation layer and the second barrier layer is avoided, and interface traps can be further reduced. According to the invention, the optimization of the surface defects of the thick barrier layer and the barrier layer is realized, and the improvement of the performance and reliability of the device is facilitated.

The utility model relates to the technical field of torque rheometers, in particular to a torque rheometer rotor structure convenient to clean. The torque rheometer rotor structure convenient to clean comprises a torque rheometer and an electric heating rod, a first insertion hole and a first positioning hole are formed in the left side of a rotor of the torque rheometer, two sets of through holes are evenly formed in the left side of a sealing plate of the torque rheometer in a penetrating mode, a second insertion hole is formed in the top of each through hole in a penetrating mode, and the first positioning hole and the second insertion hole are communicated through the first positioning hole. A group of third insertion holes are formed in the tops of two groups of guide holes formed in the left side of the torque rheometer sealing plate in a penetrating manner; the first handle is pulled upwards, the second handle is pulled leftwards, then the sealing plate of the torque rheometer can be taken down, then the front plate of the torque rheometer is moved leftwards and taken down, and at the moment, the rotor of the torque rheometer can be driven by the magnetic force of the square magnetic block to slide leftwards and be pulled out by pulling the handles leftwards. Therefore, the rotor can be taken down without contacting the rotor.

The utility model provides an electrical switch state warning device and an electrical cabinet, the electrical switch state warning device comprises a lock body and a blocking cover detachably installed on the lock body, the lock body is provided with a slot, and the blocking cover comprises a first insertion tongue and an opening which are respectively arranged on two opposite sides in a first direction of the blocking cover; a handle position is arranged between the first inserting tongue and the opening, the blocking cover is detachably connected with the lock body, and in the first state, the first inserting tongue is matched with the inserting groove; the blocking cover further comprises a second inserting tongue arranged on one side of the blocking cover in the second direction, the second inserting tongue is located on the periphery of the handle position, an included angle is formed between the second direction and the first direction in the circumferential direction of the center of the handle position, and the inserting direction of the second inserting tongue is the same as the inserting direction of the first inserting tongue. The electrical switch state warning device can be switched to a second state, and in the second state, the first insertion tongue is idle, and the second insertion tongue is matched with the insertion groove. The electrical cabinet comprises an electrical switch state warning device installed at a switch handle. On the premise that a blocking cover does not need to be additionally arranged, the device can be used in cooperation with handles located at two different stations.

The utility model discloses a stadium surrounding net easy and convenient to assemble and disassemble, which relates to the technical field of surrounding nets and comprises a net body, a fixing plate is mounted on the outer side of the net body, a plurality of first insertion holes arranged at equal intervals are formed in the fixing plate, a supporting piece is arranged on the outer side of the fixing plate and comprises a stand column, and a fixing bottom plate is fixedly connected to the outer surface of the stand column. A fixing hole is formed in the fixing bottom plate, a storage piece is clamped to the front side of the stand column, and a fixing mechanism is arranged on the front side of the stand column. Through the arrangement of the supporting piece, the primary rapid limiting effect on the net body and the fixing plate can be achieved, the fixing plate can be rapidly fixed and limited through the mutual cooperation of the storage piece and the fixing mechanism, and therefore the rapid fixing effect on the net body is achieved, and through the mutual cooperation use of the supporting piece, the storage piece and the fixing mechanism, the net body can be rapidly fixed. Therefore, the net body fixing plate supporting pieces can be quickly disassembled and assembled, disassembly and assembly are easy and convenient, the overall disassembly and assembly efficiency is improved, and time and labor are saved.

The utility model relates to a green circulation packing box with an RFID tag, which comprises a box body, a box cover is placed on the top of the box body, an anti-collision frame is fixedly connected to the outer side wall of the box body, a reinforcing rib is fixedly connected to the top of the box cover, two positioning blocks are symmetrically arranged on the edge of one side of the top of the box cover, and the two positioning blocks are fixedly connected to the outer side wall of the box body. The side wall of the anti-collision frame is provided with a first insertion groove used for being inserted into the positioning block. The utility model relates to the technical field of packaging boxes. According to the environment-friendly circulating packaging box with the RFID tag, by arranging the positioning blocks, the box cover and the box body can be fixed, and the RFID tag can be placed, so that the RFID tag is easier to install, the situation that the RFID tag is bent due to uneven stress when the RFID tag is inserted is avoided, the positioning blocks cannot be directly opened after being inserted into the inserting grooves, and the positioning blocks cannot be directly opened after being inserted into the inserting grooves. And the RFID tag can be more stable after being installed.

The utility model discloses a numerical control lathe positioning fixture, which relates to the numerical control lathe fixture field, and comprises a chuck fixture body, the upper end of the chuck fixture body is provided with at least two sliding seats, the top of each sliding seat is connected with a clamping jaw, each clamping jaw is of a step-shaped structure, the middle part of the bottom end of each clamping jaw is provided with a first insertion hole, and each first insertion hole is provided with a second insertion hole. Second inserting holes are formed in the two ends of the bottom of the clamping jaw, and a connecting column matched with the first inserting holes is arranged in the middle of the top end of the sliding base. According to the scheme, the first inserting hole is formed in the bottom end of the clamping jaw, the connecting column on the sliding base is inserted into the first inserting hole, then the clamping jaw can rotate relative to the sliding base, after the clamping jaw rotates by 180 degrees, the clamping end of the clamping jaw faces outwards, and a large-size tubular workpiece can be clamped; and secondly, according to the scheme, the detachable buffer assembly is installed at the clamping face end of the clamping jaw 3, so that the clamping of the soft workpiece is facilitated, the flexible workpiece is also conveniently and periodically replaced, and the clamping stability of the chuck clamp is guaranteed.

The utility model discloses a screw cap type automatic glue discharge brush, which comprises a screw cap, a fixed head and an insertion type glue discharge component, an assembly seat is fixedly connected to the top of the fixed head, a first glue discharge nozzle is arranged at the top of the assembly seat, and a plurality of first insertion holes are arranged at the top of the assembly seat in an array manner. Therefore, the rotary cover can be conveniently replaced on the glue bottle by rotating the rotary cover, meanwhile, the brush can be conveniently and correspondingly replaced through the assembling base, the first glue outlet nozzle and the first inserting hole, the bearing base can be conveniently replaced through mutual clamping of the first clamping plate and the second clamping plate, and therefore the brush can be replaced, and the glue bottle can be conveniently replaced. Therefore, detachable connection between the screw cap and the glue bottle is allowed, a user can conveniently install or replace the screw cap, meanwhile, the brush can be conveniently cleaned or replaced, the service life of a product is prolonged, waste is reduced, maximum efficiency and cost effectiveness of glue use can be achieved, and meanwhile the requirement for environmental protection is met.

The utility model discloses a ferrule assembly, a connector, a mating ferrule assembly, a mating connector and a connector assembly. The insertion core assembly comprises a first insertion core, a plurality of first terminals and a first grounding piece. The first insertion core comprises a plurality of first insertion holes which are formed in the first insertion core and are used for respectively inserting a plurality of first terminals; and the first concave part is formed on the side part of the first insertion core and is used for mounting the first grounding piece. The plurality of first terminals are respectively inserted into the plurality of first jacks. The first grounding member is mounted in the first recess of the first ferrule. The first concave part is opened outwards in the horizontal direction perpendicular to the axial direction of the first jack, and the first grounding piece is installed in the first concave part in the horizontal direction. According to the utility model, a mounting hole for mounting the grounding piece does not need to be formed on the insertion core. Therefore, the number of the jacks for installing the terminals can be increased under the condition that the size of the insertion core is not increased, and miniaturization of the connector is facilitated.

The invention relates to the technical field of mechanical cutter machining, in particular to a sectional type cutting milling cutter convenient to adjust the length, which comprises a cutter head mechanism, a connecting mechanism and an output mechanism, the cutter head mechanism comprises a cutter head body, a first fixing ring is fixedly connected to the lower end of the cutter head wall of the cutter head body, and a chip groove is formed in the cutter head wall of the cutter head body; a plurality of first notches distributed around the circle center in an array mode are formed in the outer wall of each first fixing ring, first insertion holes are formed in the inner side walls of the first notches, and a plurality of first threaded holes are fixedly connected to the edge of the bottom end of the tool bit body; according to the connecting rod for the milling cutter, the connecting strength between every two sections is improved, instability caused by direct threaded connection is avoided, and therefore the service life of the milling cutter is prolonged.

The application provides a terminal welding clamp and a fixing method of terminals to be welded on a substrate. The terminal welding clamp comprises a bottom plate provided with a bottom plate fixing column; a fixing frame provided with a rectangular cavity, a fixing frame opening and suitable for fixing a DBC; the fixing frame is further provided with a fixing frame fixing hole; a support provided with a first opening penetrating through and capable of accommodating a terminal to be vertically inserted from above and to pass through; a first support table is arranged above the outer periphery of the first opening, and first grooves are arranged on both sides of the inner wall and capable of accommodating the upper end of the terminal to be inserted and clamped; a first insertion hole penetrating through is arranged on the side edge of the support and capable of accommodating the terminal to be vertically inserted from above and to pass through; the support is further provided with a support fixing hole; a fixing block is provided with an opening, and the top end of the terminal can be inserted and clamped in the opening; and the fixing block is further provided with a fixing block fixing column. When the support and the bottom plate are assembled, the terminal does not need to be assembled with the support in advance, the working efficiency is high, and the bottom plate and the support with products do not need to be inclined, and there is no risk of terminal falling.

The embodiments of the present application relate to the field of modular fabricated buildings. Provided are a steel column connecting structure, a steel column module, a forming apparatus, a fabricated steel structure, a prefabricated shear wall and a building. The steel column connecting structure comprises a first steel column and an insertion plate, wherein a first insertion slot is provided in one end of the first steel column in the axial direction, the insertion plate is inserted into the first insertion slot, and at least one side of the insertion plate protrudes out of an outer side wall of the first steel column. The steel column module comprises a second steel column and a steel column connecting structure, wherein a second insertion slot is provided in one end of the second steel column in the axial direction. The insertion plate is inserted into the second insertion slot, and the end of the first steel column that is provided with the first insertion slot is embedded in a cavity of the second steel column, and is fixedly connected to the second steel column by means of the insertion plate. The steel column connecting structure serves as an insertion structure between upper and lower steel column modules of a modular fabricated building, is easily formed, has a simple structure, is convenient to assemble, can improve the production efficiency while ensuring the product quality, facilitates automated production, and reduces manual production cost.

The utility model discloses a gate valve with bag clamping and sealing functions and a bag opening station comprising the gate valve. The gate valve comprises a first plug board and a second plug board which are driven by driving equipment to slide relatively, the center of the first insertion plate is provided with an insertion groove facing an opening of the second insertion plate, a sealing plate matched with the end face of the second insertion plate is arranged in the insertion groove, and when the gate valve is in an open state, a channel allowing a ton bag opening to penetrate through is reserved between the end face of the first insertion plate and the end face of the second insertion plate. The second inserting plate can be inserted into the inserting groove to make contact with the sealing plate in an attached mode so that the ton bag can be folded and clamped when the gate valve is closed. The gate valve is provided with the two insertion plates which move relatively, and the insertion grooves are formed in the second insertion plate, so that the two insertion plates have the overlapped part when the gate valve is closed, a ton bag can be folded on the upper end face and the lower end face of the second insertion plate, and then the ton bag is clamped through butt joint of the second insertion plate and the sealing plate; and the clamping sealing performance is ensured.

The utility model provides an assembly type transition section of a prestress lattice type tower. The assembly type transition section comprises a main barrel, lattice type corner columns and first connecting structures. The plurality of lattice type corner columns are mounted on the main cylinder body through first connecting structures; the first connecting structure comprises a cross brace, an inclined brace, a first inserting plate and a second inserting plate; one ends of the transverse support and the inclined support are fixedly connected with the main cylinder body, and the other ends of the transverse support and the inclined support are provided with slots; one end of the first inserting plate is fixedly inserted into the inserting groove in the transverse support, the second inserting plate is fixedly inserted into the inserting groove in the inclined support, and the other end of the first inserting plate and the other end of the second inserting plate are detachably connected with the lattice type corner column. Through the arrangement of the transverse supports and the inclined supports, the main cylinder body can be installed on the lattice type corner column, and through the disassembly and assembly of the first insertion plate and the second insertion plate, the transportation of the transition section can be facilitated.

The utility model relates to a connector terminal, which comprises a connecting section, a first plugging section and a second plugging section, and is characterized in that the connecting section is used for being matched with an insulator in a limiting manner; the first inserting section is connected to one end of the connecting section, the second inserting section is connected to the other end of the connecting section, the first inserting section comprises a plurality of clamping arms arranged in the circumferential direction, and a first inserting hole is defined by the clamping arms; the second insertion section is provided with a second insertion hole, and a partial area of the hole wall of the second insertion hole protrudes towards the radial inner side so as to be used for tightly abutting against the insertion pin. In the connector terminal, the first insertion section is provided with the first insertion hole, the second insertion section is provided with the second insertion hole, and the first insertion hole and the second insertion hole can be in insertion fit with the insertion pin, so that the connector terminal can realize bidirectional insertion fit. The first plug-in section and the second plug-in section are directly connected with the connecting section, the structure is simple, the connecting section is in limiting fit with the insulator, and the fixing mode is simple.

The utility model relates to a multi-specification injection medicine storage box which comprises a bottom box, a storage cavity is formed in the upper portion of the bottom box, the bottom box is rotationally connected with a top cover capable of covering the storage cavity, the bottom box comprises a first box body and a second box body, and a first containing groove is formed in the upper portion of the first box body in the length direction of the bottom box. The second box body is provided with a first inserting part which can be inserted into the first containing groove and is in sliding fit with the first containing groove, a second containing groove is formed in the upper portion of the second box body, and a plurality of partition plates capable of partitioning the storage cavity are arranged in the storage cavity. The injection storage box has the advantages that the first box body and the second box body are in sliding fit, the capacity of the whole storage box is adjusted, a user can freely expand or contract the storage space according to the number and specification of injections needing to be stored actually, and therefore limited space resources can be better utilized, and the storage space is saved. And a plurality of partition plates capable of partitioning the storage cavity are arranged in the storage cavity, so that the space utilization flexibility of the storage cavity is improved.

The utility model discloses a product pouring gate removing tool which comprises a tool body, two product bodies are placed on the top of the tool body, the two product bodies are jointly and fixedly connected with a pouring gate connecting piece, the bottom of each product body is fixedly connected with a first protruding block, a second protruding block and a third protruding block, and the first protruding block, the second protruding block and the third protruding block are arranged on the tool body. Two pairs of first inserting grooves, second inserting grooves and third inserting grooves are formed in the top of the tool body, a first stand column, a second stand column and a third stand column are fixedly connected to the bottom of each product body, and two pairs of first limiting grooves, second limiting grooves and third limiting grooves are formed in the top of the tool body. Products can be fixed at a time through the cooperation of the protruding blocks and the inserting grooves, the products can be fixed again through the cooperation of the stand columns and the limiting grooves, manual fixing of the products is replaced, limiting of the products is achieved, the fixing positions of the products are consistent every time, and the follow-up cutting effect is good.

This invention relates to a circumferentially mating plug and socket, comprising a plug body and a socket body. The plug body includes a first insulating base, and its top is coaxially arranged with a first protective ring, a first insertion ring, a second insulating ring, a second insertion ring, a third insulating ring, a third insertion ring, a fourth insulating ring, and a fourth insertion element, all of which are conductive to the plug wires. The socket body includes a second insulating base, and its top is coaxially arranged with a second protective ring, a first insertion ring, a fifth insulating ring, a second insertion ring, a sixth insulating ring, a third insertion ring, a seventh insulating ring, and a fourth insertion ring, all of which are conductive to the socket wires. During mating, each insulating ring of the plug inserts into its corresponding positioning ring, and the insertion ring inserts into its corresponding insertion ring, achieving precise circumferential mating and conductive connection. This circumferentially mating plug and socket, by employing a concentric circle structure, enables mating of the plug and socket in any direction, greatly reducing the difficulty of plug-socket connection and facilitating automated mating of the plug and socket.

The utility model discloses a locking mechanism for a meat grinder, which comprises a machine head, a machine body, a locking component and a handle, and the machine head is provided with a first inserting part; the machine body is provided with a second inserting part, and the machine head is installed on the machine body through inserting connection of the first inserting part and the second inserting part. One of the first inserting part and the second inserting part is an inserting block, and the other one of the first inserting part and the second inserting part is an inserting groove; the locking assembly comprises a first locking piece arranged on the machine head and a second locking piece arranged on the machine body. When the handle is pulled, the first locking piece and the second locking piece can be driven to be mutually locked or unlocked. Therefore, the first locking piece and the second locking piece can be driven to be mutually locked or unlocked by pulling the handle, the operation is simple and convenient, the stable connection between the machine head and the machine body is ensured, the problem that the machine head and the machine body are loosened or separated during working is avoided, the use safety and stability of the meat grinder are improved, the accident risk is reduced, and the safety of the meat grinder is improved. And the use safety of the user is ensured.