Cover piece inserting structure for tent

Abstract

A cover sheet insertion structure for a tent belongs to the technical field of tent installation and comprises a tent frame, a connecting rod, a gear box, a plurality of fan blades, a side surface large ditch, a cross beam and a cover sheet B, the side surface large ditch comprises an inner panel; the gear box comprises a main body, an outer box body and a rocking shaft; one fan blade comprises a fan blade main body and two cover plates A; the cover plate A comprises a main shaft A and a connecting shaft A; a row of insertion holes A are formed in an inner panel of the side face large groove, and the front end of the main shaft A is inserted into the insertion holes A; the two connecting rods are arranged on the two sides of the tent frame and outside the cover plate A respectively, a plurality of inserting holes B are evenly formed in the connecting rods, and the connecting shafts A are inserted into the inserting holes B respectively; an elastic inverted buckle is arranged on the connecting shaft A; the cover plate B comprises a main shaft B and a connecting shaft B; the main shaft B comprises a circular shaft and a square shaft; the circular shaft is fixedly connected with the cover plate B; one end of the square shaft is integrated with the circular shaft; the device has the beneficial effects that the connecting structure is simplified, use is convenient, operation is stable, and parts are not prone to damage.

Description

Technical Field

[0001] The utility model discloses a cover piece plug-in structure, in particular to a cover piece plug-in structure used for a tent, belonging to the technical field of tent installation. Background Art

[0002] With the development of leisure and tourism, the demand for various tents has increased rapidly, and the quality requirements have become higher and higher. However, existing tents have the problems of difficult assembly and disassembly, unstable operation, inflexible pull rods and easy damage of parts.

[0003] like Fig.16 and Fig.17 The figure shows the connection diagram of the gearbox transmission shaft (square shaft or hexagonal shaft) and the cover plate of the background technology. Two upper connecting plates and lower connecting plates are arranged below the cover plate, which are rotatably connected to each other. The upper end of the upper connecting plate is rotatably connected to the upper end of the cover plate, and the lower end of the lower connecting plate is fixedly connected to the front end of the gearbox shaft. The gearbox shaft drives the cover plate to rotate through the upper connecting plate and the lower connecting plate, and the cover plate drives the fan blades to rotate through the connecting shaft and the connecting rod (the connecting rod and the fan blades are not shown in the figure).

[0004] In addition, the connection between the connecting shaft of the cover plate and the connecting rod socket requires the use of a metal clip, which is inconvenient to assemble and easy to damage.

[0005] The above linkage structure is relatively complicated, resulting in cumbersome assembly and disassembly work and inconvenient use. Since the gear box shaft drives the cover plate to rotate through the upper connecting plate and the lower connecting plate, there are many parts involved in the transmission process, which makes the operation of the linkage mechanism unstable. The pull rod is often inflexible and the machine parts are easily damaged, which brings troubles to customers. Utility Model Content

[0006] The purpose of the utility model is to provide a cover plate plug-in structure for a tent, which can achieve the purpose of simplifying the connection structure, being convenient to use, being stable in operation and being difficult to damage the parts, in view of the defects in the prior art of the connection structure between the gear box shaft and the cover plate of the above-mentioned tent, which has the advantages of complex linkage structure, inconvenient use, unstable operation and easy damage to the parts.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a cover piece plug-in structure for a tent, comprising a tent frame, two connecting rods, a gear box and a plurality of fan blades; the tent frame comprises large side grooves and cross beams on both sides; the large side grooves are an integrated structure, comprising an inner panel, an outer panel and a bottom plate, and the two ends of a plurality of fan blades are respectively arranged on the inner panels of the large side grooves on both sides; the gear box comprises a main body, an outer box body and a rocking shaft; each fan blade comprises a fan blade main body and two cover pieces A arranged at both ends of the fan blade main body; the cover piece A comprises a main shaft A and a connecting shaft A, and the cover piece A is fixedly mounted on the two ends of the fan blade main body by screws The main shaft A is fixedly arranged in the middle of the outer end surface of the cover piece A, and a row of sockets A are arranged on the inner panels of the large side grooves on both sides, and the front end of the main shaft A is inserted into the sockets A of the inner panel and is rotatably connected, and the fan blades and the cover piece A can rotate through the sockets A; the connecting shaft A is fixedly arranged on one side of the upper side of the outer end surface of the cover piece A; 2 connecting rods are arranged on both sides of the tent frame and outside the cover piece A, and the length of the connecting rods is consistent with the length of the large side grooves. A number of sockets B corresponding to each connecting shaft A are evenly arranged on the connecting rods, and the number of sockets B is consistent with the number of connecting shafts A. Each connecting shaft A is respectively inserted into each socket B and is rotatably connected;

[0008] It also includes a cover piece B; the position of the cover piece A near the gear box of the second fan blade is replaced by the cover piece B; the shape of the cover piece B is consistent with the shape of the cover piece A; the cover piece B includes a main shaft B and a connecting shaft B; the positions of the main shaft B and the connecting shaft B on the cover piece B are consistent with the positions of the main shaft A and the connecting shaft A on the cover piece A; the outer panel corresponding to the socket A of the inner panel of the side groove corresponding to the main shaft B on the cover piece B has a socket A-2, that is, the socket A and the socket A-2 form a through hole on the side groove; the main shaft B includes a round shaft and a square shaft; the round shaft and the main shaft A have the same shape and length and are fixedly connected to the cover piece B; one end of the square shaft is an integral structure with the round shaft, and the other end of the square shaft passes through the through hole and is inserted into the socket C on the gear box; the end of the connecting shaft B has a small hole, and when the connecting shaft B is inserted into the socket B of the connecting rod, a pin is inserted into the small hole to prevent the connecting rod from falling off;

[0009] There are two symmetrical elastic undercuts on both sides of the connecting shaft A on the cover A. When the connecting shaft A is inserted into the socket B of the connecting rod, the elastic undercuts pop out to prevent the connecting rod from falling off. The cover A can be rotatably connected with the connecting rod through the connecting shaft A with the elastic undercuts. The connection is fast and reliable, which improves the assembly efficiency and service life.

[0010] The rotation of the rocking shaft drives the main shaft B to rotate through the gear set, and the rotation of the main shaft B drives the cover piece B to drive the connecting rod, and the connecting rod drives all the cover pieces A to rotate, thereby driving all the fan blades to rotate; because the gear box is directly connected to the cover piece B through the square shaft, the structure is simplified and the combination is firm, so that the transmission of the gear box and the fan blades is stable, avoiding the situation where the connection is unstable, which is easy to cause vibration and unstable rotation of the fan blades and affect the use effect.

[0011] There are 26 fan blades, including 51 cover pieces A and 1 cover piece B, and 26 sockets B are evenly arranged on a connecting rod.

[0012] The utility model also comprises a crank handle, which is hooked at the lower end of the crank shaft; when the crank handle is manually rotated, the crank handle drives the crank shaft to rotate.

[0013] The cover sheet A and the cover sheet B are provided with a plurality of drainage holes; the cover sheet A and the cover sheet B are available in three sizes: large, medium and small.

[0014] The shape of the socket A of the large side groove is an inverted gourd shape, including an upper hole and a lower hole, and the diameter of the upper hole of the socket is larger than the diameter of the lower hole; a convex ring is provided at the front end of the main shaft A, and the main shaft A is first inserted into the upper hole of the socket A on the large side groove, and then falls downward into the lower hole, and the convex ring is stuck in the lower hole; a convex ring is provided at the front end of the circular shaft of the main shaft B, and the main shaft B is first inserted into the socket A on the large side groove, and then falls downward into the lower hole, and the convex ring is stuck in the lower hole of the socket A, and then the square shaft is passed through the socket A-2; that is, after all the fan blades are installed on the large side groove, the connecting shaft A and the connecting shaft B are inserted into the sockets on the connecting rod.

[0015] A shaft sleeve is installed in the socket A, and the front shape of the shaft sleeve is an inverted gourd shape, including an upper hole A and a lower hole A; the shapes of the upper hole A and the lower hole A match the upper hole and the lower hole of the socket A; the shaft sleeve also includes a shaft sleeve body, a clamping edge, and two elastic buckles; the clamping edge is located in front of the shaft sleeve body; the width of the shaft sleeve body matches the width of the socket A; the width of the clamping edge is greater than the width of the socket A; the two elastic buckles are located in the front middle of the shaft sleeve body, one on the left and one on the right, and the farthest distance between the two elastic buckles in the natural state is greater than the width of the socket A, and the clamping edge and The distance between the elastic buckles is equal to the thickness of the panel inside the large groove on the side; when the main body of the sleeve is inserted into the socket A, the two elastic buckles are squeezed toward the middle and pass through the socket A. After the two elastic buckles pass through, they return to their natural state, and the card edge is stuck outside the socket A, and the panel inside the large groove on the side is between the card edge and the elastic buckle; the main shaft A is first inserted into the upper hole A on the sleeve, and then falls downward into the lower hole A, and the convex ring is stuck in the lower hole A; the main shaft B is first inserted into the upper hole A on the sleeve, and then falls downward into the lower hole A, and the convex ring is stuck in the lower hole A.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The front end of the gearbox transmission shaft is directly fixedly connected to the outer end of the main shaft B on the cover plate B, which simplifies the overall linkage mechanism and makes it easy to assemble and disassemble. It avoids the conventional technology of using two upper connecting plates and lower connecting plates that are rotatably connected to each other. The connection between the connecting shaft of the cover plate and the connecting rod socket involves fewer parts in the transmission process, which makes the operation of the linkage mechanism stable; the pull rod is flexible to pull and the parts are not easily damaged;

[0018] (2) A mutually symmetrical elastic undercut is provided on each side of the connecting shaft A. The cover piece A can be rotatably connected to the connecting rod through the connecting shaft A with the elastic undercut. The connection is quick and reliable, thereby improving the assembly efficiency and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is: a three-dimensional diagram of the utility model;

[0020] Figure 2 yes: Figure 1 AA partial enlarged image;

[0021] Figure 3 Yes: Schematic diagram of the crossbeam, side groove, cover plate B and gear box after assembly;

[0022] Figure 4 yes: Figure 3 A partial enlarged view of BB;

[0023] Figure 5 yes: Figure 4 A partial enlarged view of CC;

[0024] Figure 6 Yes: Gearbox and cover plate B are directly connected;

[0025] Figure 7 Yes: Cover A and the fan body are assembled by screws;

[0026] Figure 8 Yes: The fan blade body is assembled with the side groove through the main shaft A and the socket A:

[0027] Fig. 9 yes: Figure 2 DD partial enlarged picture;

[0028] Fig.10 Yes: A three-dimensional enlarged view of the large cover piece A;

[0029] Fig.11 Yes: A three-dimensional enlarged view of the large cover piece B;

[0030] Fig.12 Yes: A three-dimensional enlarged view of the middle cover piece A;

[0031] Fig.13 Yes: A three-dimensional enlarged view of the middle cover piece B;

[0032] Fig.14 Yes: A three-dimensional enlarged view of the small cover piece A;

[0033] Fig.15 Yes: A three-dimensional enlarged view of the small cover piece B;

[0034] Fig.16 Yes: the connection diagram of the gear box and the cover plate of the background technology (front view);

[0035] Fig.17 Yes: the connection diagram of the gear box and the cover plate of the background technology (the reverse side);

[0036] Fig.18 Yes: Stereoscopic view of the sleeve;

[0037] Fig.19 Yes: Main view of the sleeve (without the clamping edge);

[0038] Fig. 20 Yes: Top view of the sleeve.

[0039] Explanation of the accompanying drawings: gear box 1, main body 101, outer box body 102, rocking shaft 103, socket C 104, cover A 2, main shaft A 201, connecting shaft A 202, elastic undercut 203, cover B 3, main shaft B 301, connecting shaft B 302, round shaft 303, square shaft 304, blade 4, blade main body 401, large side groove 5, inner panel 501, outer panel 502, bottom plate 503, socket A 504, socket A-2505, cross beam 6, connecting rod 7, socket B 701, rocking handle 8, convex ring 9, sleeve 10, sleeve main body 1001, clamping edge 1002, elastic buckle 1003. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] Embodiment 1:

[0042] like Figures 1 to 11 , Fig.18 , Fig.19 , Fig. 20 As shown, a cover sheet plug-in structure for a tent, such as Figures 1 to 6 As shown, it includes a tent frame, two connecting rods 7, a gear box 1 and a plurality of fan blades 4; the tent frame includes large side grooves 5 and a crossbeam 6 on both sides; the large side grooves 5 are an integrated structure, including an inner panel 501, an outer panel 502, and a bottom plate 503, and the two ends of the plurality of fan blades 4 are respectively arranged on the inner panels 501 of the large side grooves 5 on both sides; the gear box 1 includes a main body 101, an outer box body 102, and a rocking shaft 103; Figure 7 and Figure 8As shown, each fan blade 4 includes a fan blade body 401 and two cover pieces A2 arranged at both ends of the fan blade body 401; the cover piece A2 includes a main shaft A201 and a connecting shaft A202, and the cover piece A2 is fixedly installed on the two end surfaces of the fan blade body 401 by screws; the main shaft A201 is fixedly arranged in the middle of the outer end surface of the cover piece A2, and a row of sockets A504 are respectively arranged on the inner panels 501 of the side grooves 5 on both sides, and the front end of the main shaft A201 is plugged into the sockets A504 of the inner panel 501 and is rotatably connected, and the fan blade 4 and the cover piece A2 can rotate through the sockets A504; the connecting shaft A202 is fixedly arranged on one side of the upper side of the outer end surface of the cover piece A2; as shown Fig. 9 As shown, two connecting rods 7 are arranged on both sides of the tent frame and outside the cover A 2. The length of the connecting rod 7 is consistent with the length of the side groove 5. A number of plug holes B 701 corresponding to each connecting shaft A 202 are evenly arranged on the connecting rod 7. The number of the plug holes B 701 is consistent with the number of the connecting shafts A 202. Each connecting shaft A 202 is respectively plugged into each plug hole B 701 and rotatably connected.

[0043] like Figure 4 , 5 and Figure 6 As shown, it also includes a cover piece B3; the position of the cover piece A2 of the second blade 4 close to the gear box 1 is replaced by the cover piece B3; the shape of the cover piece B3 is consistent with the shape of the cover piece A2; the cover piece B3 includes a main shaft B301 and a connecting shaft B302; the positions of the main shaft B301 and the connecting shaft B302 on the cover piece B3 are consistent with the positions of the main shaft A201 and the connecting shaft A202 on the cover piece A2; the main shaft B301 on the cover piece B3 corresponds to the main shaft B301. The inner panel 501 of the side groove 5 corresponding to the socket A504 has a socket A-2505 on the outer panel 502, that is, the socket A504 and the socket A-2505 form a through hole on the side groove 5; the main shaft B301 includes a round shaft 303 and a square shaft 304; the round shaft 303 is consistent with the main shaft A201 in shape and length, and is consistent with the cover piece B 3 fixed connection; one end of the square shaft 304 is an integral structure with the round shaft 303, and the other end of the square shaft 304 passes through the through hole and is inserted into the socket C104 on the gear box 1; there is a small hole at the end of the connecting shaft B 302. When the connecting shaft B 302 is inserted into the socket B 701 of the connecting rod 7, a pin is inserted into the small hole to prevent the connecting rod 7 from falling off;

[0044] like Figures 9 to 11As shown, a mutually symmetrical elastic undercut 203 is respectively arranged on both sides of the connecting shaft A 202 on the cover sheet A 2. When the connecting shaft A 202 is inserted into the insertion hole B 701 of the connecting rod 7, the elastic undercut 203 pops outward to prevent the connecting rod 7 from falling off. The cover sheet A 2 can be rotatably connected with the connecting rod 7 through the connecting shaft A 202 with the elastic undercut 203. The connection is quick and reliable, which improves the assembly efficiency and service life.

[0045] The rotation of the rocking shaft 103 drives the main shaft B 301 to rotate through the gear set, and the rotation of the main shaft B 301 drives the cover piece B 3 to drive the connecting rod 7, and the connecting rod 7 drives all the cover pieces A 2 to rotate, thereby driving all the fan blades 4 to rotate; because the gear box 1 is directly connected to the cover piece B 3 through the square shaft 304, the structure is simplified and the combination is firm, so that the transmission of the gear box 1 and the fan blades 4 is stable, avoiding the situation where the connection is unstable, vibration is easy to generate, and the rotation of the fan blades 4 is unstable, which affects the use effect.

[0046] like Figure 1 and Figure 2 As shown, there are 26 fan blades 4, including 51 cover plates A2 and 1 cover plate B3, and 26 sockets B701 are evenly arranged on one connecting rod 7.

[0047] like Figure 1 and Figure 2 As shown, it also includes a crank handle 8, which is hooked on the lower end of the rocking shaft 103; when the crank handle 8 is manually rotated, the crank handle 8 drives the rocking shaft 103 to rotate.

[0048] like Fig.10 and Fig.11 As shown, the cover sheet A2 and the cover sheet B3 are provided with a plurality of drainage holes; the cover sheet A2 and the cover sheet B3 are large.

[0049] like Figure 8 , Fig.18 , Fig.19 , Fig. 20As shown, the shape of the socket A 504 of the side groove 5 is an inverted gourd shape, including an upper hole and a lower hole, and the diameter of the upper hole of the socket is larger than the diameter of the lower hole; a convex ring 9 is provided at the front end of the main shaft A 201; a convex ring 9 is provided at the front end of the round shaft 303 of the main shaft B301; a sleeve 10 is installed in the socket A, and the front shape of the sleeve 10 is an inverted gourd shape, including an upper hole A and a lower hole A; the shapes of the upper hole A and the lower hole A match the upper hole and the lower hole of the socket A; the sleeve 10 also includes a sleeve body 1001, a clamping edge 1002, and two elastic buckles 1003; the clamping edge 1002 is located in front of the sleeve body 1001; the width S1 of the sleeve body 1001 matches the width of the socket A; the width of the clamping edge 1002 is larger than the width of the socket A width; two elastic buckles 1003 are located in the front middle of the sleeve body 1001, one on the left and one on the right. The farthest distance S2 of the two elastic buckles 1003 in the natural state is greater than the width of the socket A, and the distance S3 between the clamping edge 1002 and the elastic buckle 1003 is equal to the thickness of the inner panel of the side large groove; when the sleeve body 1001 is inserted into the socket A, the two elastic buckles are squeezed to the middle and pass through the socket A. After the two elastic buckles pass, they return to the natural state, the clamping edge is clamped outside the socket A, and the inner panel of the side large groove is between the clamping edge and the elastic buckle; the main shaft A 201 is first inserted into the upper hole A on the sleeve 10, and then falls downward into the lower hole A, and the convex ring 9 is stuck in the lower hole A; the main shaft B 301 is first inserted into the upper hole A on the sleeve 10, and then falls downward into the lower hole A, and the convex ring 9 is stuck in the lower hole A, and then the square shaft 304 is passed through the socket A-2 505; that is, after all the fan blades 4 are installed on the side large groove 5, the connecting shaft A 202 and the connecting shaft B 302 are inserted into the socket on the connecting rod 7.

[0050] Embodiment 2:

[0051] like Figure 12 to Figure 13 As shown, cover A 2 and cover B 3 are of medium model.

[0052] The rest is the same as in Example 1.

[0053] Embodiment 3:

[0054] like Figure 14 to Figure 15 As shown, cover A 2 and cover B 3 are small.

[0055] The rest is the same as in Example 1.

[0056] The embodiments described above are only preferred implementations of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A cover piece plug-in structure for a tent, comprising a tent frame, two connecting rods, a gear box and a plurality of fan blades; the tent frame comprises large side grooves and cross beams on both sides; the large side grooves are an integrated structure, comprising an inner panel, an outer panel and a bottom plate, and the two ends of a plurality of fan blades are respectively arranged on the inner panels of the large side grooves on both sides; the gear box comprises a main body, an outer box body and a rocking shaft; each fan blade comprises a fan blade main body and two cover pieces A arranged at both ends of the fan blade main body; the cover piece A comprises a main shaft A and a connecting shaft A, and the cover piece A is fixedly mounted on the two end surfaces of the fan blade main body by screws; The main shaft A is fixedly arranged in the middle of the outer end surface of the cover piece A, and a row of sockets A are arranged on the inner panels of the large side grooves on both sides, and the front end of the main shaft A is inserted into the sockets A of the inner panel and is rotatably connected; the connecting shaft A is fixedly arranged at a side position on the upper side of the outer end surface of the cover piece A; two connecting rods are arranged on both sides of the tent frame and outside the cover piece A, and the length of the connecting rod is consistent with the length of the large side groove. A number of sockets B corresponding to each connecting shaft A are evenly arranged on the connecting rod, and the number of sockets B is consistent with the number of connecting shafts A. Each connecting shaft A is respectively inserted into each socket B and is rotatably connected; it is characterized in that: It also includes a cover piece B; the position of the cover piece A near the gear box of the second fan blade is replaced by the cover piece B; the shape of the cover piece B is consistent with the shape of the cover piece A; the cover piece B includes a main shaft B and a connecting shaft B; the positions of the main shaft B and the connecting shaft B on the cover piece B are consistent with the positions of the main shaft A and the connecting shaft A on the cover piece A; the outer panel corresponding to the socket A of the inner panel of the side groove corresponding to the main shaft B on the cover piece B has a socket A-2, that is, the socket A and the socket A-2 form a through hole on the side groove; the main shaft B includes a round shaft and a square shaft; the round shaft and the main shaft A have the same shape and length and are fixedly connected to the cover piece B; one end of the square shaft is an integral structure with the round shaft, and the other end of the square shaft passes through the through hole and is inserted into the socket C on the gear box; the end of the connecting shaft B has a small hole, and when the connecting shaft B is inserted into the socket B of the connecting rod, a pin is inserted into the small hole to prevent the connecting rod from falling off; A symmetrical elastic undercut is arranged on each side of the connecting shaft A on the cover A. When the connecting shaft A is inserted into the socket B of the connecting rod, the elastic undercut pops outward to prevent the connecting rod from falling off. The cover A is rotatably connected to the connecting rod through the connecting shaft A with the elastic undercut. The rotation of the rocking shaft drives the main shaft B to rotate through the gear set, the rotation of the main shaft B drives the cover piece B to drive the connecting rod, the connecting rod drives all the cover pieces A to rotate, thereby driving all the fan blades to rotate.

2. A cover sheet plug-in structure for a tent according to claim 1, characterized in that: There are 26 fan blades, including 51 cover pieces A and 1 cover piece B, and 26 sockets B are evenly arranged on a connecting rod.

3. The cover sheet plug-in structure for a tent according to claim 1, characterized in that: The utility model also comprises a crank handle, which is hooked at the lower end of the crank shaft; when the crank handle is manually rotated, the crank handle drives the crank shaft to rotate.

4. The cover sheet plug-in structure for a tent according to claim 1, characterized in that: The cover sheet A and the cover sheet B are provided with a plurality of drainage holes; the cover sheet A and the cover sheet B are available in three sizes: large, medium and small.

5. The cover sheet plug-in structure for a tent according to claim 1, characterized in that: The shape of the socket A of the large side groove is an inverted gourd shape, including an upper hole and a lower hole, and the diameter of the upper hole of the socket is larger than the diameter of the lower hole; a convex ring is provided at the front end of the main shaft A, and the main shaft A is first inserted into the upper hole of the socket A on the large side groove, and then falls downward into the lower hole, and the convex ring is stuck in the lower hole; a convex ring is provided at the front end of the circular shaft of the main shaft B, and the main shaft B is first inserted into the socket A on the large side groove, and then falls downward into the lower hole, and the convex ring is stuck in the lower hole of the socket A, and then the square shaft is passed through the socket A-2; that is, after all the fan blades are installed on the large side groove, the connecting shaft A and the connecting shaft B are inserted into the sockets on the connecting rod.

6. A cover sheet plug-in structure for a tent according to claim 5, characterized in that: A shaft sleeve is installed in the socket A, and the front shape of the shaft sleeve is an inverted gourd shape, including an upper hole A and a lower hole A; the shapes of the upper hole A and the lower hole A match the upper hole and the lower hole of the socket A; the shaft sleeve also includes a shaft sleeve body, a clamping edge, and two elastic buckles; the clamping edge is located in front of the shaft sleeve body; the width of the shaft sleeve body matches the width of the socket A; the width of the clamping edge is greater than the width of the socket A; the two elastic buckles are located in the front middle of the shaft sleeve body, one on the left and one on the right, and the farthest distance between the two elastic buckles in the natural state is greater than the width of the socket A, and the clamping edge and The distance between the elastic buckles is equal to the thickness of the panel inside the large groove on the side; when the main body of the sleeve is inserted into the socket A, the two elastic buckles are squeezed toward the middle and pass through the socket A. After the two elastic buckles pass through, they return to their natural state, and the card edge is stuck outside the socket A, and the panel inside the large groove on the side is between the card edge and the elastic buckle; the main shaft A is first inserted into the upper hole A on the sleeve, and then falls downward into the lower hole A, and the convex ring is stuck in the lower hole A; the main shaft B is first inserted into the upper hole A on the sleeve, and then falls downward into the lower hole A, and the convex ring is stuck in the lower hole A.

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