TWM528779U - Electrically conductive base of illuminating building block - Google Patents

Description

Conductive base of luminous building blocks

The present invention is a conductive base of a luminous building block, in particular, a conductive connecting member having positive and negative electrodes, and electrically connecting the conductive sheets through the positive and negative conductive connecting members, so that the light-emitting building blocks mounted on the conductive base can be A conductive base of a luminescent building that emits light via energization of a conductive base.

The high light-transmissive light-emitting building block disclosed in the invention patent of the Japanese Patent Publication No. I500441 can be stacked on each other by a block of bricks and connected to each other to form a specific light-emitting pattern, whereby the stacking combination of the light-emitting blocks can be changed and formed. Glowing shape. However, the existing high-light-emitting illuminating blocks can only be electrically connected to an external power supply device by stacking a luminescent building block stacked on the bottom layer, and directly or indirectly stacking the remaining illuminating blocks stacked above the illuminating building block. Together with conductive illuminating, it is unable to illuminate together with other block illuminating blocks adjacent to the block of illuminating blocks but not in a stacked relationship, resulting in a limitation of play.

Therefore, how to design and produce a large-sized base so that the light-emitting blocks stacked on the base can emit light is the main purpose of the creation.

In order to achieve the above-mentioned creative purpose, the technical means adopted by the present invention is to provide a conductive base of a luminous building block, comprising: a chassis having a top surface and at least one ring side surface, the top surface surrounding the at least one ring side Forming an accommodating space, and the chassis includes: a plurality of hollow splicing wedges and a plurality of slots; the plurality of hollow splicing wedges protruding from the top surface, and the top surface is outwardly away from the accommodating space And extending to protrude from the accommodating space; a slot is disposed in the accommodating space, the plurality of slots corresponding to the position of the wedge hole of the plurality of hollow splicing wedges; a positive conductive group interposed in at least one of the plurality of slots, and the One side of the positive electrode conductive group extends from one of the wedge holes of each of the hollow wedge columns; wherein the positive electrode conductive group comprises: a positive electrode connecting piece and at least two positive electrode conductive sheets, and the positive electrode connecting piece is electrically Connecting the at least two positive electrode conductive sheets, and the positive electrode electrical connecting piece is engaged in the accommodating space of the chassis; and a negative conductive group inserted in the other adjacent to the slot in which the positive conductive group is inserted In the slot, one side of the negative conductive group extends beyond the other wedge hole of each hollow wedge column; wherein the negative conductive group includes: a negative electrode connecting piece and at least two negative electrode conductive pieces, the negative electrode is electrically The connecting piece is electrically connected to the at least two negative electrode conductive sheets, and the negative electrode electrical connecting piece is engaged in the accommodating space of the chassis.

The advantage of the present invention is that the chassis is used as a pedestal of the illuminating building block, and the external power supply device is electrically connected to one side of the negative conductive group through the positive conductive group, and the other side extends through the hollow wedge on the chassis. The wedge holes of the column enable all the light-emitting blocks stacked on the chassis to emit light through the positive conductive group and the negative conductive group.

Preferably, the top surface of the chassis is arranged by a plurality of hollow wedge columns to form a conductive region and a non-conductive region. The technical means utilizes a plurality of hollow wedges arranged on the top surface of the chassis to form different patterns, so that a conductive region with a plurality of hollow wedges and a non-conductive region without a hollow wedge are formed on the chassis, thereby making the illumination of the present invention The chassis of the conductive base of the building block adds variability.

More preferably, the at least two positive electrode conductive sheets respectively have a connecting piece and at least one electrical connecting tab, and the at least one electrical connecting tab corresponds to a wedge hole position of the hollow wedge column, and the at least one The electrical connection tab protrudes from the accommodating space through the wedge hole and protrudes from the hollow insertion wedge column; and the at least two negative electrode conductive sheets also have a connection piece and at least one electrical connection protrusion, respectively, and the at least one electrical connection protrusion and the The wedge hole positions of the hollow wedge column correspond to each other, and the at least one electrical connection tab protrudes from the accommodating space through the wedge hole to protrude from the hollow wedge column. The technical method utilizes a positive electrode electrical connection piece to electrically connect all the positive electrode conductive sheets and the negative electrode electrical connection piece to electrically connect all the negative electrode conductive sheets, so that each of the electrical connection tabs protruding from the wedge hole of the hollow insertion wedge column can be combined with The external power supply unit is electrically connected, and thereby conducts power to all of the illuminating blocks stacked on the chassis so that they can be energized to emit light.

More preferably, the at least one positive electrode tab and the at least one electrical connecting tab of the at least two negative electrode conductive sheets respectively have a connecting end and a protruding end, and the connecting end is connected with the connecting piece, and the protruding end extends It protrudes from the wedge hole and is bent and folded between the joint end and the protruding end to form an elastic structure. The technical means utilizes the protruding end of the electrical connecting tab to protrude from the wedge hole of the hollow wedge, so that the positive conductive group or the negative conductive group of the luminous building block of the present invention can directly contact the circuit board of the light-emitting building block stacked on the chassis. And through the curved folding arrangement between the connecting end and the protruding end of each electrical connecting tab, further making the electrical connecting tab elastic by bending and folding structural characteristics, causing the protruding end of the electrical connecting tab to be stacked on the chassis After the circuit board of the upper illuminating building block is pressed downward, it can be lifted upwards and is electrically connected to the circuit board of the illuminating building block.

Preferably, the positive electrode conductive sheet further has at least one first engaging member, the positive electrode connecting piece has at least one second engaging member, and the receiving space of the chassis is further provided with at least one first fastening. The slot and the at least one second engaging slot, the at least one first engaging member is correspondingly fastened to the position and shape of the at least one first engaging slot, the at least one second engaging member and the at least one second engaging member The position and shape of the at least one second fastening groove are correspondingly fastened; the negative electrode conductive piece also has at least one first engaging component, and the negative electrical connecting piece also has at least one second engaging component, and the negative electrode is electrically conductive At least one first engaging member of the sheet is buckled and fixed corresponding to the position and shape of the at least one first engaging groove of the chassis, and at least one second engaging member of the negative electrode connecting piece and at least one of the chassis The position and shape of the two fastening slots are correspondingly fastened. The technical means further utilizes a first engaging groove provided on each of the positive electrode conductive sheets and each of the negative electrode conductive sheets to correspond to a first fastening groove further provided in the accommodating space of the chassis, so that the positive conductive sheet and the negative electrode are electrically conductive. The sheet can be fastened and fixed to the chassis, and the positive conductive sheet or the negative conductive sheet is not easily separated from the chassis because the stack of the light-emitting blocks on the chassis is pressed. In addition, the present invention simultaneously designs the second engaging member on the positive electrode connecting piece and the negative electrode connecting piece to correspond to the second engaging groove in the accommodating space of the chassis, so that the positive electrode connecting piece is electrically connected to the negative electrode. The film does not easily separate the positive electrode connecting piece and the negative electrode connecting piece from the chassis due to the stack pressing of the light-emitting building blocks on the chassis, thereby effectively maintaining the mutual fixed relationship between the chassis and the positive electrode conductive group and the negative electrode conductive group, thereby effectively avoiding The separation between components affects the transmission of electricity.

In the following, please cooperate with the drawings and the preferred embodiment of the present invention to further explain the technical means adopted by the present creation for the purpose of achieving the intended creation.

A first embodiment of the present invention, as shown in FIGS. 1 to 3, includes a chassis 10, a positive conductive group 20, and a negative conductive group 30.

The chassis 10 is a rectangular face plate structure having a top surface 11 and four ring side surfaces 12, and the top surface 11 and the four ring side surfaces 12 are formed to form an open shape toward the bottom of the chassis 10. Set space 13.

The chassis 10 further includes: 256 hollow wedge segments 14 arranged in a 16×16 matrix arrangement and 32 slots 15 arranged in parallel with each other; wherein the hollow wedge segments 14 protrude from the chassis 10 The top surface 11 of the top surface 11 extends outwardly away from the accommodating space 13 , and the side of each of the hollow wedge columns 14 facing away from the accommodating space 13 has a top portion 141 . The top portion 141 is provided with two wedge holes 141A each having an elongated rectangular shape and disposed in parallel with each other. The slot 15 is disposed in the accommodating space 13 , and the extending direction of the slot 15 is parallel to the extending direction of the wedge hole 141A of the hollow rib 14 , and the slot 15 and the wedge hole 141A are The positions correspond so that the outer space at the bottom of the chassis 10 can communicate with the outer space at the top of the chassis 10 through the slot 15, the interior of the hollow wedge stud 14 and the wedge hole 141A.

The positive electrode conductive group 20 includes a positive electrode connecting piece 21 and a plurality of positive electrode conductive sheets 22. More specifically, as shown in the specific embodiment of FIG. 2, the number of the plurality of positive electrode conductive sheets 22 may be up to 16, that is, equal to the number of the hollow plug wedges 14 of one of the rows on the chassis 10. The positive electrode electrical connection piece 21 is used for connecting the plurality of positive electrode conductive sheets 22 and an external power supply device (not shown) so that the power provided by the external power supply device can be transmitted through the positive electrode connecting piece 21 simultaneously. To each of the positive electrode conductive sheets 22.

Referring to FIG. 4 and FIG. 5 , each of the positive electrode conductive sheets 22 has a connecting piece 221 , a plurality of electrical connecting tabs 222 , and a plurality of first engaging members 223 . More specifically, as shown in the specific embodiment of FIG. 2, and referring to FIG. 4 to FIG. 7 at the same time, the connecting piece 221 is a rectangular elongated strip structure, and the plurality of electrical connecting tabs 222 are respectively The top of the connecting piece 221 protrudes outward, and the number thereof may be up to 16, that is, equal to the number of the hollow plugging wedges 14 of one of the columns 10, and the plurality of first engaging members 223 are also respectively The top of the connecting piece 221 protrudes outward, and the number thereof may be up to 15, that is, the position thereof corresponds to the position between one of the hollow wedge columns 14 and the adjacent hollow wedge column 14 of one of the columns on the chassis 10. .

Each of the electrical connection tabs 222 has a connecting end 222A and a protruding end 222B. The connecting end 222A is coupled to the connecting piece 221, and the protruding end 222B extends outwardly from the connecting end 222A, and is connected. The end 222A and the protruding end 222B are bent and folded to form an elastic structure, so that when the external force is applied to the protruding end 222B, the protruding end 222B can be compressed toward the connecting end 222A, and the protruding end 222B can be oriented away when the external force is eliminated. The direction of the joint end 222A moves to restore its initial position before it is unstressed.

As shown in FIG. 2 to FIG. 4 and FIG. 6 , the slot 15 in the accommodating space 13 of the chassis 10 is further recessed with a plurality of first fastening slots 151 , wherein the positions of the first fastening slots 151 are The shape is respectively corresponding to each of the first engaging members 223 of the positive electrode conductive sheet 22, and when the positive electrode conductive sheets 22 are inserted into any of the slots 15 of the chassis 10, the first engaging members 223 are corresponding to the first ones. The engaging ends 151 are fastened and fixed to each other, so that the protruding ends 222B of the electrical connecting tabs 222 of the positive conductive strips 22 can extend and protrude from one of the wedge holes 141A of the corresponding hollow wedges 14 so that the protruding ends The 222B can be electrically connected to the illuminating blocks stacked on the chassis 10.

As shown in FIG. 2 to FIG. 3, FIG. 5 and FIG. 7, the positive electrode electrical connection piece 21 has a rectangular elongated strip structure, and the positive electrode electrical connection piece 21 has a plurality of contact pieces 211 and a plurality of sets of second engaging members 212. The plurality of contact pieces 211 and the plurality of sets of second engaging pieces 212 respectively extend outwardly, and the extending direction of the plurality of contact pieces 211 and the extending direction of the plurality of sets of second engaging pieces 212 The contact strips 211 can be electrically connected to the positive electrode conductive strips 22 inserted in the slots 15 , and the plurality of second latching members 212 can extend toward the accommodating space 13 of the chassis 10 . And it is engaged with the chassis 10 and fixed. More specifically, as shown in the specific embodiment of FIG. 2, the number of the plurality of contact strips 211 may be up to 16, that is, equal to the maximum number of insertable positive conductive sheets 22 on the chassis 10.

A plurality of second fastening slots 16 are further recessed in the accommodating space 13 of the chassis 10, wherein the positions and shapes of the second fastening slots 16 and the second clamping component of the positive electrical connecting piece 21 are respectively respectively Correspondingly, when the positive electrode connecting pieces 21 are inserted into the chassis 10, the second engaging member 212 and the corresponding second engaging groove 16 are buckled and fixed to each other, so that the positive electrode connecting piece 21 is fixed. The contact piece 211 is stably maintained in electrical connection with the positive electrode conductive sheet 22 in each of the slots 15, and the power supplied from the external power supply device can be transmitted to the respective positive electrode conductive sheets 22 through the positive electrode connecting piece 21.

Referring to FIG. 2, the negative electrode conductive group 30 includes: a negative electrode connecting piece 31 and a plurality of negative electrode conductive sheets 32. The negative electrode connecting piece 31 has the same structure as the positive electrode connecting piece 21, and the plurality of negative electrodes are electrically conductive. The structure of the sheet 32 is also the same as that of the plurality of positive electrode conductive sheets 22, and the electrical connection manner of the negative electrode conductive sheets 32 and the negative electrode electrical connecting sheets 31, and the negative electrode electrical connecting sheets 31 and the chassis 10, and the respective negative conductive sheets The fixing and locking manners of the chassis 10 and the chassis 10 are the same as those of the positive electrode electrical connection piece 21 and the positive electrode conductive piece 22, and are alternately arranged with the positive electrode conductive group 20.

As shown in FIG. 2, the positive electrode connecting piece 21 and the negative electrode connecting piece 31 are disposed opposite to each other in the accommodating space 13 of the chassis 10. More specifically, the positive electrode connecting piece 21 is disposed on the chassis 10 near the lower left side. The ring side surface 12, and the negative electrode electrical connection piece 31 is disposed on the ring side surface 12 of the chassis 10 near the upper right side, and is electrically connected to the positive electrode conductive piece 22 on the positive electrode electrical connection piece 21 and electrically connected to the negative electrode. The negative electrode conductive sheets 32 on the electrical connecting piece 31 are distributed in the form of a spacer finger, and more specifically, two positive electrode conductive sheets 22 electrically connected to the positive electrode connecting piece 21 are disposed with a negative electrode. The connecting piece 31 is electrically connected to the negative electrode conductive sheet 32 which is in contact with the negative electrode conductive sheet 32. In the middle of the negative electrode conductive sheet 32 which is electrically connected to the negative electrode electrical connecting piece 31, a positive electrode conductive sheet 22 electrically connected to the positive electrode connecting piece 21 is disposed. And the positive electrode conductive sheet 22 and the negative electrode conductive sheet 32 are not in contact with each other, and the positive electrode electrical connection piece 21 is only connected to the positive electrode conductive piece 22, and the negative electrode electrical connection piece 31 is only connected to the negative electrode conductive piece 32, and adjacent thereto Positive conduction 22 and the negative electrode conductive sheet 32 may respectively correspond to the two wedge holes 141A of the hollow insertion wedge column 14, so that the electrical connection tabs 222 of the positive electrode conductive sheet 22 and the electrical connection tabs of the negative electrode conductive sheet 32 respectively protrude from the single hollow wedge. The two wedge holes 141A of the column 14 are electrically connected to the light-emitting blocks stacked on the chassis 10, thereby forming a conductive path so that the power provided by the external power supply device can be transmitted to the light-emitting blocks on the chassis 10 to smoothly emit light.

Referring to the second embodiment of the present invention shown in FIG. 8 , the positive electrode electrical connection piece 21 and the negative electrode electrical connection piece 31 are not limited to be disposed at the edge of the chassis 10 near the ring side 12 , and the positive electrode electrical connection piece is not limited. 21 and the negative electrode connecting piece 31 may also be disposed at a distance from the edge of the accommodating space 13 of the chassis 10. In this arrangement, the positive electrode connecting piece 21 and the negative electrode connecting piece 31 need to be rotated at a right angle, so that the contact piece 211 of the positive electrode connecting piece 21 and the contact piece of the negative electrode connecting piece 31 protrude toward the chassis 10, thereby further The contact piece 211 of the positive electrode electrical connection piece 21 can be electrically connected to the positive electrode conductive piece 22, and the contact piece of the negative electrode electrical connection piece 31 can be electrically connected to the negative electrode conductive piece 32, and is disposed in the accommodating space 13 of the chassis 10. Further, a recess that can be fastened to the second engaging member 212 of the positive electrode connecting piece 21 and the second engaging member of the negative electrode connecting piece 31 is provided, that is, the positive electrode connecting piece 21 and the negative electrode connecting piece can be obtained. 31 is installed at a distance from the edge of the accommodating space 13 of the chassis 10, and the conductive path is formed so that the power provided by the external power supply device can be transmitted to the illuminating blocks on the chassis 10, so that the illuminating building blocks can be smoothly illuminated.

Referring to the third embodiment of the present invention shown in FIG. 9, the chassis 10A of the conductive base of the light-emitting building block can also be arranged on the rectangular chassis 10A by using different arrangement designs of the hollow wedge columns 14 to form different patterns. The conductive region 17 and the non-conductive region 18 are respectively formed on the chassis 10A, and the corresponding number of electrical connections are selected for the number of the hollow wedge segments 14 provided in different rows and columns on the top surface 11A of the chassis 10A. The different positive conductive sheets 22 or the negative conductive sheets 32 of the tabs 222 increase the variability of the conductive base of the light-emitting blocks and do not affect the conductive effect of transmitting power to the light-emitting blocks stacked on the conductive base.

Please refer to the fourth embodiment of the present invention shown in FIGS. 10 to 11, the chassis 10B of the conductive base of the light-emitting building block may also have a circular structure having a top surface 11B and a ring side surface 12B, wherein the chassis 10B can also be The positive conductive sheet 22 or the negative conductive sheet 32 having the number of different electrical connection tabs 222 is used in combination with the number of hollow wedges 14 provided on different rows and columns on the top surface 11B, so that the power can be externally The power supply device is transmitted to the purpose of the light-emitting bricks stacked on the conductive base, and the appearance shape of the conductive base of the light-emitting building block is varied.

In summary, the conductive base of the luminous building block of the present invention is configured to provide a plurality of hollow insertion wedges 14 and wedge holes 141A of the hollow insertion wedges 14 on the chassis 10, 10A, 10B, so as to be inserted into the chassis 10 The positive electrode conductive sheet 22 of the positive electrode conductive group 20 in the groove 15 and the negative electrode conductive sheet 32 of the negative electrode conductive group 30 may protrude from the wedge hole 141A and be electrically connected to the light-emitting building blocks stacked on the conductive base to make the external The power supply device can transmit power to all of the illuminating blocks stacked on the conductive base via the positive conductive group 20 and the negative conductive group 30 to cause the user to stack any creation on the conductive base of the illuminating building of the present invention, and All luminous blocks can shine.

10, 10A, 10B‧‧‧ chassis
11, 11A, 11B‧‧‧ top surface
12, 12A, 12B‧‧‧ ring side
13‧‧‧ accommodating space
14‧‧‧ hollow wedge
141‧‧‧ top
141A‧‧‧ wedge hole
15‧‧‧Slot
151‧‧‧First fastening groove
16‧‧‧Second snap groove
17‧‧‧Conducting area
18‧‧‧non-conducting area
20‧‧‧ Positive Conductive Group
21‧‧‧ positive electrode connecting piece
211‧‧‧Contacts
212‧‧‧Second snap-on parts
22‧‧‧ positive conductive sheet
221‧‧‧Links
222‧‧‧Electrical connection tabs
222A‧‧‧ link
222B‧‧‧ Highlight
223‧‧‧First card fittings
30‧‧‧Negative Conductive Group
31‧‧‧Negative electrical connection piece
32‧‧‧Negative conductive sheet

1 is a perspective view of a first embodiment of a conductive base of the luminous building block of the present invention. 2 is an exploded perspective view of a first embodiment of a conductive base of the illuminated building block of the present invention. Figure 3 is a bottom enlarged partial elevation view of the accommodating space of the first embodiment of the conductive base of the illuminating building block of the present invention. Fig. 4 is a partial schematic view showing a positive electrode conductive sheet of the conductive base of the luminous building block of the present invention. Fig. 5 is a partial schematic view showing the positive electrode connecting piece of the conductive base of the luminous building block of the present invention. Figure 6 is a side elevational cross-sectional view showing the state in which the positive electrode conductive sheets of the conductive base of the present luminous block and the chassis are buckled. Fig. 7 is a side elevational, cross-sectional view showing the state in which the positive electrode connecting piece of the conductive base of the light-emitting building block of the present invention and the chassis are in a buckled state. Figure 8 is an exploded perspective view of a second embodiment of the electrically conductive base of the illuminated building block of the present invention. Figure 9 is a perspective view of a third embodiment of the conductive base of the illuminated building block of the present invention. Figure 10 is a perspective view showing a fourth embodiment of the conductive base of the luminous building block of the present invention. Figure 11 is a perspective exploded view of a fourth embodiment of the conductive base of the illuminated building block of the present invention.

10‧‧‧Chassis

11‧‧‧ top surface

12‧‧‧ ring side

13‧‧‧ accommodating space

14‧‧‧ hollow wedge

141‧‧‧ top

141A‧‧‧ wedge hole

Claims (8)

A conductive base of a light-emitting building block, comprising: a chassis having a top surface and at least one ring side surface, the top surface and the at least one ring side surface forming an accommodating space, and the chassis comprises: a plurality of hollow wedge columns The plurality of hollow wedge legs protrude from the top surface, and the top surface extends outwardly away from the accommodating space, and the side of each hollow wedge column facing away from the accommodating space has a side a top portion, the top portion is provided with two wedge holes, and the two wedge holes are respectively connected to the accommodating space; a plurality of slots are disposed in the accommodating space, the plurality of slots and the plurality of hollow wedges The position of the wedge hole of the column corresponds to a position; a positive conductive group is inserted into the plurality of slots, and one side of the positive conductive group extends to protrude from one of the hollow wedge columns; wherein the positive electrode is electrically conductive The group includes: a positive electrode electrical connection piece and at least two positive electrode conductive pieces, the positive electrode electrical connection piece is electrically connected to the at least two positive electrode conductive pieces, and the positive electrode electrical connection piece is engaged in the accommodating space of the chassis; a negative conductive group interposed in another slot adjacent to the slot in which the positive conductive group is inserted, and one side of the negative conductive group extends to protrude from the other wedge of each hollow wedge The negative electrode conductive group includes: a negative electrode electrical connection piece and at least two negative electrode conductive pieces, the negative electrode electrical connection piece is electrically connected to the at least two negative electrode conductive pieces, and the negative electrode electrical connecting piece is engaged with the chassis. In space. The conductive base of the light-emitting building block of claim 1, wherein the top surface of the chassis is arranged by a plurality of hollow wedge columns to form a conductive region and a non-conductive region. The conductive base of the light-emitting building block of claim 1, wherein the at least two positive electrode conductive sheets respectively have a connecting piece and at least one electrical connecting tab, and the wedge hole positions of the at least one electrical connecting tab and the hollow wedge column Correspondingly, and the self-accommodating space extends through the wedge hole to protrude from the hollow wedge column. The conductive base of the light-emitting building block of claim 1, wherein the at least two negative conductive sheets each have a connecting piece and at least one electrical connecting tab, and the at least one electrical connecting tab and the wedge-shaped hole position of the hollow wedge Correspondingly, and the self-accommodating space extends through the wedge hole to protrude from the hollow wedge column. The conductive base of the light-emitting building block of claim 3, wherein the at least one electrical connection tab of the positive conductive sheet has a connecting end and a protruding end, the connecting end is connected with the connecting piece, and the protruding end extends It protrudes from the wedge hole and is bent and folded between the joint end and the protruding end to form an elastic structure. The conductive base of the light-emitting building block of claim 4, wherein the at least one electrical connection tab of the negative conductive sheet has a connecting end and a protruding end, and the connecting end is connected with the connecting piece, and the protruding end extends It protrudes from the wedge hole and is bent and folded between the joint end and the protruding end to form an elastic structure. The conductive base of the light-emitting building block of claim 5, wherein the positive electrode conductive piece has at least one first engaging member, the positive electrode connecting piece has at least one second engaging member, and the receiving space of the chassis is provided At least one first fastening slot and at least one second fastening slot, the at least one first engaging component is buckled and fixed corresponding to the position and shape of the at least one first fastening slot, the at least one The two engaging members are buckled and fixed corresponding to the position and shape of the at least one second engaging groove. The conductive base of the light-emitting building block of claim 6, wherein the negative conductive sheet has at least one first engaging member, the negative electrical connecting piece has at least one second engaging member, and the receiving space of the chassis is provided At least one first fastening slot and at least one second fastening slot, the at least one first engaging component is buckled and fixed corresponding to the position and shape of the at least one first fastening slot, the at least one The two engaging members are buckled and fixed corresponding to the position and shape of the at least one second engaging groove.