Connecting seat convenient to combine and separate

Abstract

The connecting seat comprises a base and an expansion seat, an insertion part is arranged at the bottom of the expansion seat, an insertion hole is formed in the center of the insertion part, a clamping part is arranged on the upper surface of the base, the clamping part and the upper surface of the base jointly form a clamping groove, the base is provided with an inner cavity, and a spring bolt inlet and outlet is formed in the upper surface of the base. The side wall of one end of the base is provided with an insertion opening, the end portion, where the insertion opening is located, of the base is defined as the front end of the base, an unlocking wrench is arranged in the insertion opening in a penetrating mode, the front end of the unlocking wrench extends out of the base, the rear end of the unlocking wrench extends into the inner cavity and is fixedly provided with two unlocking plates, and the two unlocking plates are distributed on the left side and the right side of the spring bolt. The bottom face of each unlocking plate is provided with a guide inclined face inclining upwards gradually, guide columns are fixed to the left side wall and the right side wall of the spring bolt respectively, the guide columns on the two sides of the spring bolt are located under the guide inclined faces of the unlocking plates on the corresponding sides respectively, and the spring bolt is connected with an elastic mechanism. The device has the advantage of being convenient to operate and use.

Description

Technical Field

[0001] The invention relates to the technical field of connecting devices, and in particular to a connecting socket capable of quickly combining or separating two devices. Background Art

[0002] At present, in many production or life scenarios, there is a need to quickly combine or separate two devices. Especially in the medical industry, during the transportation of emergency patients, critically ill patients often carry many emergency equipment, such as defibrillators, ventilators, oxygen cylinders, suction devices, monitors, blood pressure monitors, oximeters, first aid kits, infusion pumps, variable temperature water tanks, and ECMO hosts; when the critically ill patient is transferred to the stretcher on the ambulance, the accompanying emergency equipment needs to be placed on the stretcher on the ambulance. When the ambulance arrives at the treatment center, the medical staff will transfer the critically ill patient on the stretcher on the ambulance to the transfer cart of the emergency treatment center. At the same time, the accompanying emergency equipment needs to be removed from the stretcher on the ambulance and placed on the transfer cart of the emergency treatment center. Since the accompanying emergency equipment is currently placed directly on the stretcher on the ambulance or the rotating cart, it is very easy to shake and fall due to bumps during the transportation process, which is extremely inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to provide a connection seat which is convenient for combination and separation and can combine or separate a base and an expansion seat conveniently and quickly, and after combination, the expansion seat can still rotate freely relative to the base.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a connecting seat that is easy to combine and separate, including a base and an expansion seat, an insertion portion is arranged at the bottom of the expansion seat and a socket is arranged in the center of the insertion portion, a clamping portion is arranged on the upper surface of the base, and the clamping portion and the upper surface of the base together constitute a card slot for the insertion portion of the expansion seat to be inserted into translationally, the base has an inner cavity, and a lock tongue entrance and exit that is downwardly connected to the inner cavity and corresponds to the socket of the insertion portion when the insertion portion of the expansion seat is inserted into the card slot is arranged on the upper surface of the base, a lock tongue is arranged in the lock tongue entrance and exit, and a socket connected to the inner cavity is arranged on the side wall at one end of the base, and the end of the base where the socket is located is defined as the front end of the base, an unlocking wrench is passed through the socket, the front end of the unlocking wrench extends outward from the base, and the rear end of the unlocking wrench extends into the inner cavity of the base through the socket and is fixed with two unlocking plates that can only move in the inner cavity of the base in the front and rear directions, and the two unlocking plates are distributed on the lock tongue The left and right sides of the lock tongue are provided with a guide slope which gradually slopes upwards, and the left and right side walls of the lock tongue are respectively fixed with guide posts, and the guide posts on both sides of the lock tongue are respectively located directly below the corresponding guide slopes of the unlocking plates on the corresponding sides, and the lock tongue is connected to the elastic mechanism. Under the action of the elastic mechanism, the guide posts on both sides of the lock tongue always press upwards and contact the corresponding guide slopes of the unlocking plates on the corresponding sides, and always have the tendency to move upwards from the lock tongue entrance and exit to extend out of the base; when the expansion seat insertion portion is inserted into the base slot and the unlocking wrench drives each unlocking plate to move to the high position of the guide slope to contact the corresponding guide post, the lock tongue will extend the base upwards from the lock tongue entrance and exit and insert into the jack under the action of the elastic mechanism to lock the expansion seat to the base; when the unlocking wrench drives each unlocking plate to move to the low position of the guide slope to contact the corresponding guide post, the guide post will move downward along the guide slope and synchronously drive the lock tongue to move downwards until it is completely retracted into the lock tongue entrance and exit to unlock the expansion seat.

[0005] Furthermore, the aforementioned connecting seat that is easy to combine and separate, wherein: the insertion portion of the expansion seat is shaped as a circular shape that can facilitate the expansion seat to rotate relative to the base in the slot when the expansion seat is locked to the base, and an expansion seat rotation positioning mechanism is arranged between the base and the expansion seat, and the structure of the expansion seat rotation positioning mechanism includes: a plurality of positioning grooves are arranged in sequence along the circumferential direction around the insertion hole on the bottom surface of the insertion portion, and a plurality of threaded holes are arranged on the upper surface of the base in the area surrounded by the U-shaped card edge of the slot, and a ball screw is threadedly connected in each threaded hole, and the positioning bead of the head of each ball screw protrudes from the upper surface of the base. When the expansion seat insertion portion rotates relative to the base in the slot, the rotation trajectory of the positioning groove on the bottom surface of the insertion portion just passes through the positioning beads of each ball screw of the base, and when the expansion seat insertion portion rotates around the locking tongue in the slot until each positioning groove just corresponds to the positioning bead of each ball screw downward, the positioning bead of each ball screw will be inserted upward into the corresponding positioning groove under the action of the spring inside it to position the rotation angle of the expansion seat.

[0006] Furthermore, the aforementioned connecting seat that is easy to combine and separate, wherein: a U-shaped protrusion is provided on the upper surface of the base and protrudes upward from the upper surface of the base, the opening of the U-shaped protrusion faces the front end of the base, and the top edge of the U-shaped protrusion protrudes inward and extends to form a U-shaped clamping edge, and the locking tongue entrance and exit on the upper surface of the base is located in the area surrounded by the U-shaped clamping edge, the U-shaped protrusion and the U-shaped clamping edge constitute a clamping portion, and the U-shaped protrusion, the U-shaped clamping edge and the upper surface of the base together constitute a clamping slot for the insertion portion of the expansion seat to be translated and inserted.

[0007] Furthermore, in the aforementioned connecting seat that is easy to combine and separate, the front end top surface of the locking tongue is an inclined surface that gradually tilts upward from front to back, and the front end of the inclined surface is always lower than the upper surface of the base or flush with the upper surface of the base.

[0008] Further, the aforementioned connecting seat that is easy to combine and separate, wherein: a lock tongue up and down guide mechanism is provided in the base so that the lock tongue can only move relative to the base in the up and down direction in the base inner cavity, and the structure of the lock tongue up and down guide mechanism includes: two guide units relatively distributed on the left and right sides of the lock tongue entrance and exit are provided in the base inner cavity, each guide unit includes three columns arranged in a front-to-back interval, a front vertical guide hole is formed in the gap between the front two columns in each guide unit, and a rear vertical guide hole is formed between the rear two columns, the front vertical guide holes of the two guide units are arranged oppositely, and the rear vertical guide holes of the two guide units are arranged oppositely, and coaxial guide rods are provided on the left and right side walls of the front end of the lock tongue, the two guide rods of the lock tongue are respectively penetrated in the corresponding front vertical guide holes of the two guide units, and the two guide posts of the lock tongue are coaxially arranged at the rear end of the lock tongue and respectively penetrate in the corresponding rear vertical guide holes of the two guide units, and the lock tongue can only stably move relative to the base in the up and down direction in the base inner cavity through the cooperation of each guide rod and each front vertical guide hole, and each guide post and each rear vertical guide hole.

[0009] Furthermore, the aforementioned connecting seat that is easy to combine and separate, wherein: two guide channels both running forward and backward are arranged in the base, and two unlocking plates are respectively arranged in the two guide channels, so that the two unlocking plates can only move along the forward and backward direction in the inner cavity of the base.

[0010] Furthermore, the aforementioned connecting seat that is easy to combine and separate, wherein: a first spring is respectively connected to the rear end of each unlocking plate, the front end of each first spring abuts against the rear end of the corresponding unlocking plate, and the rear end of each first spring abuts against the rear end side wall of the corresponding guide channel, and each first spring makes the unlocking plate and the unlocking wrench always have the tendency to move and reset to the corresponding guide column at the high position of the guide slope.

[0011] Furthermore, the aforementioned connecting seat that is easy to combine and separate, wherein: the structure of the elastic mechanism includes: a spring positioning groove is arranged at the bottom of the lock tongue, a second spring is arranged between the lock tongue and the base, the lower end of the second spring is against the upper surface of the base, the upper end of the second spring is embedded in the spring positioning groove and against the lock tongue, and under the action of the second spring, the guide columns on both sides of the lock tongue are always pressed upward and in tight contact with the corresponding guide inclined surfaces of the unlocking plates on the corresponding sides, and the lock tongue always has a tendency to move upward from the lock tongue entrance and exit to extend out of the base.

[0012] Furthermore, the aforementioned connecting base that is easy to combine and separate, wherein: a notch is provided at the front end of the base, and an unlocking wrench extending from the front end socket of the base is stored in the notch.

[0013] Furthermore, the aforementioned connecting base that is easy to combine and separate, wherein: the base is composed of an upper shell and a lower base plate that are detachably connected together by a plurality of connecting bolts.

[0014] Through the implementation of the above technical scheme, the beneficial effects of the present invention are: simple structure, good sealing, high stability in use, the expansion seat can be conveniently and quickly locked and connected to the base, or the expansion seat can be separated from the base, the operation is very convenient, and when the expansion seat is locked and connected to the base, the expansion seat can still rotate freely relative to the base, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a connecting seat that is easy to combine and separate as described in the present invention when the expansion seat and the base are in a locked state.

[0016] Figure 2 for Figure 1 Top view of the .

[0017] Figure 3 for Figure 1 AA section view in.

[0018] Figure 4 for Figure 1 BB section view in.

[0019] Figure 5 for Figure 4 An enlarged schematic diagram of site C is shown in FIG.

[0020] Figure 6 for Figure 1 Stereoscopic diagram.

[0021] Figure 7 for Figure 6 The structural diagram after the expansion seat is hidden in the middle.

[0022] Figure 8 for Figure 7Schematic diagram of the structure after the base is hidden.

[0023] Fig. 9 for Figure 8 Stereoscopic diagram.

[0024] Fig.10 It is a schematic diagram of the structure of a lock tongue with a guide column and a guide rod installed.

[0025] Fig.11 for Fig.10 Stereoscopic diagram.

[0026] Fig.12 This is a structural diagram of the expansion seat.

[0027] Fig.13 A schematic diagram of the structure of the base.

[0028] Fig.14 for Fig.13 DD cross section shown in .

[0029] Fig.15 for Fig.13 EE cross-section shown in .

[0030] Fig.16 for Fig.13 Top view of the .

[0031] Fig.17 for Fig.13 Stereoscopic diagram.

[0032] Fig.18 for Fig.13 Schematic diagram of the structure of the upper shell when viewed from above.

[0033] Fig.19 It is a three-dimensional view of the upper shell. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19 As shown, the connecting seat which is easy to combine and separate comprises a base 1 and an expansion seat 2, an insertion portion 3 is arranged at the bottom of the expansion seat 2 and a plug hole 4 is arranged at the center of the insertion portion 31, the base 1 is detachably connected by an upper shell 29 and a lower bottom plate 30 through a plurality of connecting bolts; a clamping portion is arranged on the upper surface 100 of the upper shell 29 of the base 1, and the clamping portion and the upper surface 100 of the base together constitute a clamping groove 5 for the insertion portion 3 of the expansion seat 2 to be inserted in translation, the base 1 has an inner cavity 6, and a clamping portion is arranged on the upper surface 100 of the upper shell 29 of the base 1. A lock tongue entrance and exit 7 is connected to the inner cavity 6 at the bottom and corresponds to the insertion hole 4 of the insertion part 3 when the insertion part 3 of the expansion seat 2 is inserted into the card slot 5. A lock tongue 8 is arranged in the lock tongue entrance and exit 7. A socket 9 connected to the inner cavity 6 is arranged on the side wall at one end of the base 1. The end of the base 1 where the socket 9 is located is defined as the front end of the base. An unlocking wrench 10 is passed through the socket 9. The front end of the unlocking wrench 10 extends outward from the base 1, and the rear end of the unlocking wrench 10 extends into the inner cavity 6 of the base 1 through the socket 9 and is fixed with two unlocking plates 11 that can only move in the front and rear directions in the base 1. The two unlocking plates The locking plates 11 are distributed on the left and right sides of the lock tongue 8. A gradually upwardly inclined guide slope 12 is provided on the bottom surface of each unlocking plate 11. Coaxial guide pillars 13 are laterally fixed on the left and right side walls of the lock tongue 8. The guide pillars 13 on both sides of the lock tongue 8 are respectively located directly below the corresponding guide slopes 12 of the unlocking plates 11 on the corresponding sides. The lock tongue 8 is connected to the elastic mechanism. Under the action of the elastic mechanism, the guide pillars 13 on both sides of the lock tongue 8 always press upward and tightly contact the corresponding guide slopes 12 of the unlocking plates 11 on the corresponding sides, and always have the function of moving upward from the lock tongue entrance 7 to extend out of the base 1 When the insertion portion 3 of the expansion seat 2 is inserted into the card slot 5 of the base 1 and the unlocking wrench 10 drives each unlocking plate 11 to move to the high position of the guide slope 12 to contact the corresponding guide column 13, the lock tongue 8 will extend upward from the lock tongue entrance 7 to the base 1 and insert into the insertion hole 4 under the action of the elastic mechanism to lock the expansion seat 2 to the base 1; when the unlocking wrench 10 drives each unlocking plate 11 to move to the low position of the guide slope 12 to contact the corresponding guide column 13, the guide column 13 will move downward along the guide slope 12 and synchronously drive the lock tongue 8 to move downward until it is completely retracted into the lock tongue entrance 7 to unlock the expansion seat 2; In this embodiment, the insertion portion 3 of the expansion seat 2 is circular in shape, so that when the expansion seat 2 is locked to the base 1, the insertion portion 3 of the expansion seat 2 can rotate relative to the base 1 in the card slot 5, and an expansion seat rotation positioning mechanism is provided between the base 1 and the expansion seat 2. The structure of the expansion seat rotation positioning mechanism includes: a plurality of positioning grooves 16 are arranged in sequence along the circumferential direction around the insertion hole 4 on the bottom surface of the insertion portion 3, and a plurality of threaded holes are provided on the upper surface 100 of the base within the area surrounded by the U-shaped card edge 15 of the card slot 5, and a ball screw 17 is threadedly connected in each threaded hole, each The positioning beads 18 at the head of the ball screw 17 extend out of the upper surface 100 of the base. When the insertion portion 3 of the expansion seat 2 rotates around the locking tongue 8 in the card slot 5, the rotation trajectory of the positioning groove 16 on the bottom surface of the insertion portion 3 just passes through the positioning beads 18 of each ball screw 17 of the base 1. When the expansion seat insertion portion 3 rotates around the locking tongue 8 in the card slot 5 until each positioning groove 16 just corresponds to the positioning beads 18 of each ball screw 17 downward, the positioning beads 18 of each ball screw 17 will be inserted upward into the corresponding positioning groove 16 by the action of the spring inside it to position the rotation angle of the expansion seat 2. The U-shaped protrusion 14 is disposed on the upper surface 100 of the base 1 and protrudes upward from the upper surface 100 of the base. The opening of the U-shaped protrusion 14 faces the front end of the base 1. The top edge of the U-shaped protrusion 14 protrudes inward and extends to form a U-shaped clamping edge 15. The lock tongue entrance 7 of the upper surface 100 of the base 1 is located in the area surrounded by the U-shaped clamping edge 15. The U-shaped protrusion 14 and the U-shaped clamping edge 15 constitute a clamping portion. The U-shaped protrusion 14, the U-shaped clamping edge 15 and the upper surface 100 of the base together constitute a slot 5 for the insertion portion 3 of the expansion seat 2 to be inserted in translation. The advantages of this slot structure are: on the one hand, since the lock tongue entrance 7 is located in the visual area surrounded by the U-shaped clamping edge 15 and can be visually observed, when the lock tongue 8 is assembled on the base 1, the lock tongue 8 is also located in the visual area. In this way, during the early equipment debugging, the staff can visually observe whether the lock tongue is extended from the base in the initial state. 1, so as to facilitate maintenance and debugging by the staff; on the other hand, the clamping part is composed of a U-shaped protrusion 14 and a U-shaped clamping edge 15, so that the clamping part has straight sections located on the left and right sides and an arc section located on the rear side, wherein the distance between the straight sections on both sides is adapted to the diameter of the insertion part 3 of the expansion seat 2, so that the straight sections on both sides can effectively guide the expansion seat insertion part 3 inserted into the card slot 5, to ensure that after the insertion part 3 is fully inserted into the card slot 5, the insertion hole 4 at the center of the insertion part 3 just corresponds to the lock tongue 8 in the lock tongue entrance and exit 7, so that the lock tongue 8 can be accurately inserted into the insertion hole 4 to lock the expansion seat 2 in the card slot of the base 1, and the arc section of the clamping part is exactly concentric with the circular insertion part 3, so that when the insertion part 3 of the expansion seat 2 is fully inserted into the card slot 5 along the straight section, the arc section of the clamping part is exactly concentric with the circular insertion part 3, and the insertion part 3 of the expansion seat 2 can rotate more stably in the card slot 5, thereby improving the stability in use; In this embodiment, the top surface of the front end of the lock tongue 8 is an inclined surface 19 that gradually tilts upward from front to back, and the front end of the inclined surface 19 is always lower than the upper surface 100 of the base or flush with the upper surface 100 of the base. The advantage of this lock tongue structure is that due to the existence of the inclined surface 19 of the lock tongue 8, when the insertion portion 3 of the expansion seat 2 enters the card slot 5 of the base 1, the insertion portion 3 will press the lock tongue 8 along the inclined surface 19, so that the lock tongue 8 will not hinder the expansion seat insertion portion 3 from moving horizontally into the base card slot 5 until the insertion portion 3 is fully inserted into the card slot 5. After the insertion portion 3 is fully inserted into the card slot 5, the insertion hole 4 at the center of the insertion portion 3 just corresponds to the lock tongue entrance 7. The locking tongue 8 in the lock tongue 8, at this time, the locking tongue 8 will extend upward from the locking tongue entrance 7 to the base 1 and insert into the insertion hole 4 under the elastic force of the second spring 27, so as to lock the expansion seat 2 in the card slot 5 of the base 1, so that the expansion seat 2 is locked to the base 1; because before the insertion part 3 of the expansion seat 2 is inserted into the card slot 5 of the base 1, the staff does not need to operate the unlocking wrench 10 to make the locking tongue 8 in the unlocked state of being completely retracted downward into the locking tongue entrance 7, and the expansion seat insertion part 3 can be directly slid into the card slot 5 and locked in the card slot 5, thereby eliminating the step of unlocking the locking tongue before the expansion seat insertion part 3 is inserted into the base card slot 5, making the operation more convenient; In the present embodiment, a lock tongue up-down guide mechanism is provided in the base 1 so that the lock tongue 8 can only move in the up-down direction relative to the base 1 in the inner cavity 6 of the base. The structure of the lock tongue up-down guide mechanism includes: two guide units are provided in the inner cavity 6 of the base 1 and are relatively distributed on the left and right sides of the lock tongue entrance 7, each guide unit includes three columns 20 arranged in a front-to-back interval, a front vertical guide hole 21 is formed in the gap between the first two columns 20 in each guide unit, and a rear vertical guide hole 22 is formed between the rear two columns 20, the front vertical guide holes 21 of the two guide units are arranged oppositely, and the rear vertical guide holes 22 of the two guide units are arranged oppositely, and coaxial guide rods 23 are provided on the left and right side walls of the front end of the lock tongue 8, and the two guide rods 23 of the lock tongue 8 are respectively penetrated in the corresponding front vertical guide holes 21 of the two guide units, and the two guide columns 13 of the lock tongue 8 are respectively penetrated in the corresponding front vertical guide holes 21 of the two guide units. The lock tongue 8 is coaxially arranged at the rear end of the lock tongue 8 and respectively penetrates the corresponding rear vertical guide holes 22 of the two guide units. The lock tongue 8 can only stably move relative to the base 1 in the upper and lower directions in the base inner cavity 6 through the cooperation of each guide rod 23 and each front vertical guide hole 21, and the cooperation of each guide column 13 and each rear vertical guide hole 22; through the arrangement of the lock tongue upper and lower guide mechanism, the lock tongue 8 can move up or down smoothly in the process of locking or unlocking the expansion seat, so that the lock tongue 8 can be quickly and accurately extended from the lock tongue entrance 7 to lock the expansion seat 2 or retracted from the lock tongue entrance 7 to the base inner cavity 6 to unlock the expansion seat 2, effectively avoiding the lock tongue 8 from being horizontally offset in the base inner cavity 6 after being retracted downward from the lock tongue entrance 7 into the base inner cavity 6 and being stuck in the base inner cavity, resulting in the inability to lock the expansion seat, thereby improving the stability of use and making the operation more convenient; In this embodiment, two guide channels 24 are provided in the base 1, both of which are in a forward and backward direction. The two unlocking plates 11 are respectively provided in the two guide channels 24, so that the two unlocking plates 11 can only move in the forward and backward direction in the base inner cavity 6. The guide channels 24 ensure that the two unlocking plates 11 can only move stably in the forward and backward direction in the base inner cavity 6, so that the unlocking plates 11 move more stably, so that the unlocking plates 11 can stably cooperate with the guide pillars 13 through the guide slopes 12 to drive the lock tongue 8 to unlock or lock the expansion seat; In this embodiment, a first spring 25 is connected to the rear end of each unlocking plate 11, and the front end of each first spring 25 abuts against the rear end of the corresponding unlocking plate 11, and the rear end of each first spring 25 abuts against the rear end side wall 241 of the corresponding guide channel 24. Each first spring 25 makes the unlocking plate 11 and the unlocking wrench 10 always have a tendency to move and reset to the corresponding guide column 13 at the high position of the guide slope. The design of the first spring 25 can facilitate the reset of the unlocking wrench 10, making the operation more convenient. In this embodiment, the structure of the elastic mechanism includes: a spring positioning groove 26 is provided at the bottom of the lock tongue 8, a second spring 27 is provided between the lock tongue 8 and the base 1, the lower end of the second spring 27 is against the upper surface 100 of the base, the upper end of the second spring 27 is embedded in the spring positioning groove 26 and against the lock tongue 8, and the guide columns 13 on both sides of the lock tongue 8 are always pressed upward and tightly contacted with the corresponding guide inclined surfaces 12 of the corresponding side unlocking plate 11 under the action of the second spring 27, and always have a tendency to move upward from the lock tongue entrance 7 to extend out of the base 1, and the above-mentioned elastic mechanism has a simple structure; in this embodiment, a notch 28 is provided at the front end of the base 1, and the unlocking wrench 10 extending from the front end socket 9 of the base is stored in the notch 28, so that the unlocking wrench 10 can be prevented from being damaged by collision or unlocked by accident during use, making the device safer to use.

[0036] In practical applications, the guiding inclined surfaces 12 on the bottom surfaces of the two unlocking plates 11 can be guiding inclined surfaces 12 that gradually tilt upward from front to back. After adopting this type of guiding inclined surfaces 12, the unlocking action of the unlocking wrench 10 is "pressing"; or the guiding inclined surfaces on the bottom surfaces of the two unlocking plates 11 can be guiding inclined surfaces 12 that gradually tilt upward from back to front. After adopting this type of guiding inclined surfaces 12, the unlocking action of the unlocking wrench 10 is "pulling outward"; The following describes in detail the process of combining the expansion seat 22 with the base 1 and the process of separating the expansion seat 2 from the base 1 and the base when the unlocking action of the unlocking wrench 10 is "pressing": Before work, for equipment 1 (such as emergency equipment) and equipment 2 (such as a stretcher or a rotating trolley on an emergency vehicle) that need to be combined or separated, where equipment 1 needs to be removed from or installed on equipment 2, first fix the base 1 of the connecting seat of the present invention on equipment 2, and fix the expansion seat 2 of the present invention on the bottom of equipment 1; When it is necessary to install device 1 on device 2, align the insertion portion 3 of the expansion seat 2 and insert it into the card slot 5 along the upper surface 100 of the base 1. During the insertion of the insertion portion 3 of the expansion seat 2 into the card slot 5, the insertion portion 3 will move along the inclined surface 19 of the lock tongue 8 and gradually press down the lock tongue 8, so that the lock tongue 8 will not hinder the expansion seat insertion portion 3 from moving horizontally into the base card slot 5 until the insertion portion 3 is fully inserted into the card slot 5. After the insertion portion 3 is fully inserted into the card slot 5, the insertion hole 4 at the center of the insertion portion 3 just corresponds to the lock tongue 8 in the lock tongue entrance and exit 7. At this time, the lock tongue 8 will extend upward from the lock tongue entrance and exit 7 to the base 1 and insert into the insertion hole 4 under the elastic force of the second spring 27, so as to prevent the expansion seat insertion portion 3 from moving horizontally into the base card slot 5. The expansion seat insertion part 3 is locked in the slot 5 of the base 1, so that the expansion seat 2 is locked to the base 1, and at this time the expansion seat 2 can still rotate freely relative to the base 1 in the slot 5 around the locking tongue 8, and when the expansion seat insertion part 3 rotates around the locking tongue 8 in the slot 5 until each positioning groove 16 just corresponds downward to the positioning ball 18 of each ball screw 17 in the base 1, the positioning ball 18 of each ball screw 17 will be inserted upward into the corresponding positioning groove 16 under the action of the spring inside it to position the rotation angle of the expansion seat 2 relative to the base 1, thereby realizing the rapid installation of device one on device two and device one can still rotate relative to device two.

[0037] When it is necessary to remove device one from device two, first press the unlocking wrench 10, so that the unlocking wrench 10 overcomes the elastic force of the first spring 25 and moves backward along the socket 9, and synchronously drives the two unlocking plates 11 to overcome the elastic force of the first spring 25 and move backward along the corresponding guide channel 24. During the backward movement of the unlocking plate 11, the unlocking plate 11 drives the guide column 13 in the corresponding guide vertical hole through the guide inclined surface 12 to gradually move downward along the guide inclined surface 12, and then synchronously drives the lock tongue 8 to move downward. When the unlocking plate 11 moves to the low position of the guide inclined surface 12 and contacts the corresponding guide column 13, the lock tongue 8 just moves downward to be completely retracted into the lock tongue entrance and exit 7 to remove the expansion seat insertion part 3 from the card The extension seat insertion part 3 is then translated and removed from the slot 5 of the base 1, thereby realizing the separation of the extension seat 2 from the base 1, and thus realizing the quick removal of device one from device two; then the external force applied to the unlocking wrench 10 is removed, and at this time the unlocking plate 11 and the unlocking wrench 10 will move forward and reset to the guide column 13 corresponding to the high position of the guide slope 12 under the action of the first spring 25, so that the lock tongue 8 can move upward from the lock tongue entrance 7 and extend out of the base 1 again under the action of the second spring 27.

[0038] The advantages of the present invention are: simple structure, good sealing, high stability in use, and the expansion seat can be easily and quickly locked and connected to the base, or the expansion seat can be separated from the base, the operation is very convenient, and when the expansion seat is locked and connected to the base, the expansion seat can still rotate freely relative to the base, which is more convenient to use.

[0039] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. A connection base that is easy to combine and separate, characterized in that: The invention comprises a base and an expansion seat, an insertion portion is arranged at the bottom of the expansion seat and a socket is arranged at the center of the insertion portion, a clamping portion is arranged on the upper surface of the base, and the clamping portion and the upper surface of the base together constitute a slot for the insertion portion of the expansion seat to be inserted into the slot, the base has an inner cavity, a lock tongue entrance and exit is arranged on the upper surface of the base, which is connected to the inner cavity downward and corresponds to the socket of the insertion portion when the insertion portion of the expansion seat is inserted into the slot, a lock tongue is arranged in the lock tongue entrance and exit, a socket connected to the inner cavity is arranged on the side wall at one end of the base, and the end of the base where the socket is located is defined as the front end of the base, an unlocking wrench is passed through the socket, the front end of the unlocking wrench extends outward from the base, and the rear end of the unlocking wrench extends into the inner cavity of the base through the socket and is fixed with two unlocking plates that can only move in the front and rear directions in the inner cavity of the base, the two unlocking plates are distributed on the left and right sides of the lock tongue, and a socket is arranged on the bottom surface of each unlocking plate There is a guide slope that gradually tilts upward, and guide posts are fixed horizontally on the left and right side walls of the lock tongue respectively. The guide posts on both sides of the lock tongue are respectively located directly below the corresponding guide slopes of the unlocking plates on the corresponding sides. The lock tongue is connected to the elastic mechanism. Under the action of the elastic mechanism, the guide posts on both sides of the lock tongue always press upward and contact the corresponding guide slopes of the unlocking plates on the corresponding sides, and always have a tendency to move upward from the lock tongue entrance and exit to extend out of the base; when the expansion seat insertion part is inserted into the base slot and the unlocking wrench drives each unlocking plate to move to the high position of the guide slope to contact the corresponding guide post, the lock tongue will extend the base upward from the lock tongue entrance and exit and insert into the jack under the action of the elastic mechanism to lock the expansion seat to the base; when the unlocking wrench drives each unlocking plate to move to the low position of the guide slope to contact the corresponding guide post, the guide post will move downward along the guide slope and synchronously drive the lock tongue to move downward until it is completely retracted into the lock tongue entrance and exit to unlock the expansion seat.

2. The connecting seat that is easy to combine and separate according to claim 1, characterized in that: The shape of the insertion portion of the expansion seat is a circular shape that can facilitate the expansion seat to rotate relative to the base in the slot when the expansion seat is locked to the base. An expansion seat rotation positioning mechanism is arranged between the base and the expansion seat, and the structure of the expansion seat rotation positioning mechanism includes: a plurality of positioning grooves are arranged in sequence along the circumferential direction around the insertion hole on the bottom surface of the insertion portion, and a plurality of threaded holes are arranged on the upper surface of the base in the area surrounded by the U-shaped card edge of the slot, and a ball screw is threadedly connected in each threaded hole, and the positioning bead of the head of each ball screw protrudes from the upper surface of the base. When the expansion seat insertion portion rotates relative to the base in the slot, the rotation trajectory of the positioning groove on the bottom surface of the insertion portion just passes through the positioning beads of each ball screw of the base. When the expansion seat insertion portion rotates around the locking tongue in the slot until each positioning groove just corresponds to the positioning bead of each ball screw downward, the positioning bead of each ball screw will be inserted upward into the corresponding positioning groove under the action of the spring inside it to position the rotation angle of the expansion seat.

3. A connection base that is easy to combine and separate according to claim 1 or 2, characterized in that: A U-shaped protrusion is provided on the upper surface of the base and protrudes upward from the upper surface of the base, the opening of the U-shaped protrusion faces the front end of the base, the top edge of the U-shaped protrusion protrudes inward and extends to form a U-shaped clamping edge, the lock tongue entrance and exit on the upper surface of the base is located in the area surrounded by the U-shaped clamping edge, the U-shaped protrusion and the U-shaped clamping edge constitute a clamping portion, and the U-shaped protrusion, the U-shaped clamping edge and the upper surface of the base together constitute a clamping slot for the insertion portion of the expansion seat to be translated and inserted.

4. The connection base that is easy to combine and separate according to claim 1, characterized in that: The top surface of the front end of the lock tongue is an inclined surface which gradually inclines upward from front to back, and the front end of the inclined surface is always lower than the upper surface of the base or flush with the upper surface of the base.

5. The connection base that is easy to combine and separate according to claim 1, characterized in that: The base is provided with a lock tongue up and down guide mechanism which enables the lock tongue to move relative to the base in the upper and lower directions in the inner cavity of the base, and the structure of the lock tongue up and down guide mechanism comprises: two guide units relatively distributed on the left and right sides of the lock tongue entrance and exit are provided in the inner cavity of the base, each guide unit comprises three columns arranged in a front-to-back interval, a front vertical guide hole is formed in the gap between the front two columns in each guide unit, and a rear vertical guide hole is formed between the rear two columns, the front vertical guide holes of the two guide units are arranged oppositely, and the rear vertical guide holes of the two guide units are arranged oppositely, and coaxial guide rods are provided on the left and right side walls at the front end of the lock tongue, the two guide rods of the lock tongue are respectively penetrated in the corresponding front vertical guide holes of the two guide units, the two guide posts of the lock tongue are coaxially arranged at the rear end of the lock tongue and respectively penetrate in the corresponding rear vertical guide holes of the two guide units, and the lock tongue can only stably move relative to the base in the upper and lower directions in the inner cavity of the base through the cooperation of the guide rods with the front vertical guide holes and the cooperation of the guide posts with the rear vertical guide holes.

6. The connection base that is easy to combine and separate according to claim 1, characterized in that: Two guide channels both running forward and backward are arranged in the base, and two unlocking plates are arranged in the two guide channels respectively, so that the two unlocking plates can only move along the forward and backward direction in the inner cavity of the base.

7. A connection base that is easy to combine and separate according to claim 6, characterized in that: A first spring is connected to the rear end of each unlocking plate, and the front end of each first spring abuts against the rear end of the corresponding unlocking plate, and the rear end of each first spring abuts against the rear end side wall of the corresponding guide channel. Each first spring ensures that the unlocking plate and the unlocking wrench always have the tendency to move and reset to the corresponding guide column at the high position of the guide slope.

8. The connection base that is easy to combine and separate according to claim 1, characterized in that: The structure of the elastic mechanism includes: a spring positioning groove is arranged at the bottom of the lock tongue, a second spring is arranged between the lock tongue and the base, the lower end of the second spring is against the upper surface of the base, the upper end of the second spring is embedded in the spring positioning groove and against the lock tongue, and under the action of the second spring, the guide columns on both sides of the lock tongue are always pressed upward and in contact with the corresponding guide inclined surfaces of the unlocking plates on the corresponding sides, and the lock tongue always has a tendency to move upward from the lock tongue entrance and exit and extend out of the base.

9. The connection base that is easy to combine and separate according to claim 1, characterized in that: A notch is arranged at the front end of the base, and an unlocking wrench extending from a socket at the front end of the base is stored in the notch.

10. The connection base that is easy to combine and separate according to claim 1, characterized in that: The base is detachably connected by an upper shell and a lower base plate through a plurality of connecting bolts.

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