CN106691265A - Easy connection device for shower room and shower room frame - Google Patents

Abstract

The invention discloses an easy connection device for a shower room and a shower room frame. The connection device includes a locking mechanism and a connector; Rotationally arranged in the fixed seat; the clip is provided with a stopper and a card slot for the plug-in piece to be inserted; the anti-rotation piece can be horizontally reciprocated and set on the back of the fixed seat, and its end can be against the stop Blocking part; wherein, the anti-rotation piece is far away from the stopper part, so that the card part rotates towards the connector under the action of the torsion spring force. Rotate in the direction of the anti-rotation piece, when the stopper and the anti-rotation piece interfere with each other to stop the card from rotating; the connection device is compact in structure and easy to operate. The connection device and the shower room frame are modularly installed before leaving the factory, and the user can It is easy to quickly complete the assembly of the frame.

Description

An easy-to-connect device for a shower room and a shower room frame

technical field

The invention relates to the bathroom industry, in particular to an easy-to-connect device for a shower room and a shower room frame using the device.

Background technique

In order to ensure the safety of packaging and reduce the volume of transportation, the existing shower room needs to be disassembled into scattered parts during packaging, and then assembled at the customer's home. At present, the existing shower room frame is installed in the way of screw fixed connection, that is, the guide rail and the side frame are fixed by a large number of screws. This installation method has the following problems: On the one hand, because the guide rail and the side frame occupy a large space, the It is difficult to install the frame of the shower room with screws, and the installation is cumbersome and extremely inconvenient. It takes a lot of time and effort to install, and the screw head is easy to slip when installing; on the other hand, when maintaining or renovating the shower room, disassembly It will also be very troublesome, and the removal of screws is cumbersome, resulting in time-consuming and labor-intensive disassembly of the shower room.

Contents of the invention

The purpose of the present invention is to solve the problems in the prior art, to provide an easy connection device for a shower room and a shower room frame using the connection device. The connection device is easy to operate and humanized. And the modular installation of the shower room frame, the user can easily and quickly complete the assembly of the frame.

To achieve the above object, the present invention adopts the following technical solutions:

An easy-to-connect device for a shower room, including a locking mechanism and a connector; the locking mechanism includes a fixing seat, a rotation stop, a clip and a torsion spring; the fixing seat is provided with a chamber, and the front of the chamber is opened There is a first opening for the reciprocating movement of the plug connector, and a second opening for the reciprocating movement of the anti-rotation member is opened on the back of the chamber; the locking member is rotatably arranged in the chamber and between the first opening and the second opening Rotation is formed between; the torsion spring has a first end and a second end, the first end is connected to the clamp, and the second end is against the fixed seat, so that the clamp can automatically rotate under the force of the torsion spring Rotate; the clamp is provided with a stopper and a card slot for inserting the connector; the anti-rotation piece can be horizontally reciprocated and set on the fixed seat, and its end can be against the stopper part; wherein, the anti-rotation piece is far away from the stopper part, so that the clamping piece rotates toward the first opening under the force of the torsion spring, and when the plug-in piece moves into the slot, it overcomes the force of the torsion spring The locking part is driven to rotate toward the second opening, and when the stop part interferes with the anti-rotation part, the locking part stops rotating.

Further, the locking mechanism also includes a pressing assembly, which is vertically arranged on the fixed seat and can move up and down reciprocatingly. The pressing assembly is formed with a first inclined guide surface on the side facing the direction of the anti-rotation piece. The anti-rotation member is oppositely provided with a second inclined guide surface compatible with the first inclined guide surface; wherein, the pressing component moves downward and passes through the cooperation between the first inclined guide surface and the second inclined guide surface, so that The anti-rotation part is displaced and away from the locking part.

Further, a first return spring is further included, and the two ends of the first return spring respectively abut against the bottom of the pressing assembly and the fixing seat, so as to return the pressing assembly upward.

Further, the pressing assembly includes a button part and a guide block arranged under the button part; the first inclined guide surface is arranged on the guide block.

Further, the guide block is provided with a limit hole for the first return spring to be placed in, and the bottom of the fixing seat is provided with a first limit post for the first return spring to be socketed on.

Further, the locking mechanism also includes a cover plate and a second return spring; the cover plate is installed on the back of the fixing seat; , so that the anti-rotation member is reset forward.

Further, the anti-rotation member is provided with a second limiting column for the second return spring to be socketed on, and the cover plate is provided with a through hole for the end of the second limiting column to pass through.

Further, the clamp is hinged to the fixed seat through a rotating shaft; the clamp is provided with an attachment hole, and the end of the first end of the torsion spring is in the shape of a hook, and is inserted into the attachment hole Inside; a support platform is provided in the chamber, and the second end of the torsion spring leans against the support platform.

A shower room frame, including a guide rail and a side frame, and also includes the above-mentioned easy-connection device for a shower room, the guide rail is fixedly connected to the connector, and the side frame is fixedly connected to the locking mechanism ; Wherein, the plug-in piece is inserted into the slot of the clip, so that the side frame is connected with the guide rail.

A shower room frame, including a guide rail and a side frame, and also includes the above-mentioned easy-to-connect device for a shower room, the guide rail is fixedly connected to the locking mechanism, and the side frame is fixedly connected to the connector ; Wherein, the plug-in piece is inserted into the slot of the clip, so that the side frame is connected with the guide rail.

Compared with the prior art, the technical solution of the present invention has the beneficial effects of:

1. The present invention can realize the quick lock and lock mechanism between the plug-in piece and the locking mechanism through the cooperation between the anti-rotation piece and the clamping piece, the action between the clamping piece and the torsion spring, and the action between the clamping piece and the plug-in piece. connection; on the other hand, the use of this connection device will not cause loosening, making the clamping connection more stable, firmer, and longer in service life.

2. The present invention adopts a modular installation design. The guide rail and the connector are installed as the first module, and the locking mechanism and the side frame are installed as the second module. The first module and the second module have been installed before leaving the factory. When installing, the user only needs to directly snap the connector of the first module into the clip of the second module to quickly complete the installation of the frame. Compared with the method of screw installation, the installation time and manpower are greatly reduced. cost and difficulty of installation.

3. In the present invention, through the cooperation between the pressing component and the anti-rotation piece, the user only needs to press the button lightly, and the guide rail will be ejected, so that the guide rail and the side frame can be easily and quickly disassembled, and the operation is convenient and simple. When the user conducts secondary decoration or maintenance, it is easy to detach the frame of the shower room.

4. The connection device of the present invention has a compact and stable structure, a reasonable design, and can save space; in addition, the locking mechanism is concealedly installed in the side frame, and the connecting part of the connector is arranged in the guide rail. After the frame is installed, on the one hand, the connecting device cannot be seen from the outside, which makes the appearance of the frame neat and generous; on the other hand, the hidden design is used to protect the connecting device and prolong its life.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention.

In the attached picture:

Fig. 1 is the schematic diagram of the three-dimensional structure of the connection device of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of the connection device of the present invention;

Fig. 3 is one of the three-dimensional structural schematic diagrams of the fixing seat of the present invention;

Fig. 4 is the second three-dimensional structural schematic diagram of the fixing seat of the present invention;

Fig. 5 is a schematic side view sectional view of the locking mechanism of the present invention;

Fig. 6 is a schematic side view sectional view of the opposite side of Fig. 5;

Fig. 7 is one of the schematic diagrams of the working principle of the connection device of the present invention;

Fig. 8 is the second schematic diagram of the working principle of the connection device of the present invention;

Fig. 9 is the third schematic diagram of the working principle of the connection device of the present invention;

Figure 10 is one of the installation schematic diagrams of the locking mechanism of the present invention;

Fig. 11 is the second installation schematic diagram of the locking mechanism of the present invention;

Fig. 12 is a schematic diagram of the installation of the guide rail and the connector according to the present invention;

Figure 13 is a schematic diagram of the installation of the side frame and the locking mechanism of the present invention;

Fig. 14 is a schematic diagram of the installation of the guide rail and the side frame of the present invention;

Fig. 15 is a schematic diagram of the three-dimensional structure of the frame of the present invention.

Notes on drawings:

Locking mechanism-1, connector-2, guide rail-3, side frame-4, fixed seat-11, anti-rotation piece-12, clip-13, torsion spring-14, pressing component-15, first return spring -16, cover plate-17, second return spring-18, rotating shaft-19, first opening-111, second opening-112, first limit post-113, support platform-114, fixed platform-115, the first Two inclined guide surfaces-121, second limit post-122, card slot-131, stopper part-132, mounting hole-133, button part-151, guide block-152, first inclined guide surface-1521.

detailed description

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Fig. 1 and Fig. 2, an easy-to-connect device for a shower room according to this embodiment includes a locking mechanism 1 and a connector 2;

The locking mechanism 1 includes a fixed base 11, a rotation stop 12, a clamp 13 and a torsion spring 14;

The fixed seat 11 is provided with a chamber, and the front of the chamber is provided with a first opening 111 for the reciprocating movement of the connector 2, as shown in Figure 3, and the back of the chamber is provided with a first opening 111 for the reciprocating movement of the anti-rotation member 12. The second opening 112; the clamp 13 is rotatably arranged in the chamber and forms a rotation between the first opening 111 and the second opening 112; the torsion spring 14 is provided with a first end and a second end, the first One end is connected to the clip 13, and the second end leans against the fixed seat 11, so that the clip 13 can rotate automatically under the action of the elastic force of the torsion spring 14; the clip 13 is provided with a stopper 132 and a The slot 131 into which the connecting piece 2 can be placed; the anti-rotation piece 12 is arranged on the fixed seat 11 so as to be able to reciprocate horizontally, and its end can abut against the stopper 132, specifically, as shown in FIG. 3 As shown, a fixing platform 115 is provided on the outer periphery of the second opening 112 of the fixing seat 11 to fix and support the anti-rotation member 12 .

Wherein, the anti-rotation piece 12 is away from the stopper 132, so that the clamping piece 13 rotates toward the first opening 111 under the elastic force of the torsion spring 14. And overcome the spring force of the torsion spring 14 to drive the clip 13 to rotate towards the second opening 112, when the stopper 132 is in conflict with the anti-rotation piece 12, the clip 13 stops rotating; The cooperation between the clamp 13 and the torsion spring 14, the action between the clamp 13 and the connector 2 can realize the quick connection between the connector 2 and the locking mechanism 1, which is easy to operate and It is simple and can be quickly installed and disassembled; on the other hand, the use of this connection device will not cause looseness, making the clamping connection more stable and firm, and the service life is longer.

As shown in Figure 2, the locking mechanism 1 also includes a pressing assembly 15, the pressing assembly 15 is vertically arranged on the fixed seat 11, and can move up and down reciprocatingly, and the pressing assembly 15 faces one side in the direction of the anti-rotation member 12 A first inclined guide surface 1521 is formed, and the anti-rotation member 12 is provided with a second inclined guide surface 121 corresponding to the first inclined guide surface 1521; wherein, the pressing assembly 15 moves downward and passes through the first inclined guide surface 1521. The cooperation between the guide surface 1521 and the second inclined guide surface 121, so that the said anti-rotation piece 12 is displaced and away from the said clamping piece 13; thus, a pressing assembly 15 is provided in the vertical direction, which is compatible with the horizontal direction of the anti-rotation piece. The rotating member 12 interacts with the first inclined guide surface 1521 and the second inclined guide surface 121 to drive the anti-rotation member 12 away from the locking member 13 in the horizontal direction. Compared with the horizontal direction, it will save more effort in the vertical direction. It is also more convenient for users to operate and more humanized.

As shown in Figures 1 and 2, the locking mechanism 1 also includes a first return spring 16, and the two ends of the first return spring 16 are respectively pressed against the bottom of the pressing assembly 15 and the fixing seat 11, so that the The pressing assembly 15 is reset upward; in this way, when the pressing assembly 15 is pressed down, under the action of the first return spring 16 , the pressing assembly 15 can be bounced upward and reset.

Specifically, as shown in FIGS. 1 and 2 , the pressing assembly 15 includes a button portion 151 and a guide block 152 disposed below the button portion 151; the first inclined guide surface 1521 is disposed on the guide block 152, And the button part 151 is exposed on the fixing base 11; thus, the pressing component 15 is divided into a button part 151 with a pressing function and a guide block 152 with a driving function, which can save space and also has a humanized design.

More specifically, as shown in FIG. 2 , the guide block 152 is provided with a limit hole for the first return spring 16 to be placed in, and the bottom of the fixed seat 11 is provided with a first limit hole for the first return spring 16 to be nested in. position post 113; thus, one end of the first back-moving spring 16 is attached to the inside of the guide block 152, and the other end is sleeved on the first stop post 113. On the one hand, it is ensured that the first return spring 16 will not be in the horizontal On the other hand, the connection between the pressing assembly 15 and the fixing seat 11 is realized, which saves design space.

As shown in Figure 2, the locking mechanism 1 of this embodiment also includes a cover plate 17 and a second return spring 18; The bottom threaded connection; the two ends of the second return spring 18 are respectively against the anti-rotation piece 12 and the cover plate 17, so that the anti-rotation piece 12 is reset forward; specifically, the anti-rotation piece 12 is provided with a second limit post 122 for the second return spring 18 to be socketed, and the cover plate 17 is provided with a through hole for the end of the second limit post 122 to penetrate; thus, on the one hand, through the cover plate 17. The cooperation between the second limit post 122 and the second return spring 18 enables the anti-rotation member 12 to automatically move forward and reset when it is away from the locking member 13; on the other hand, the second limit The end of the post 122 passes through the cover plate 17, and the cover plate 17 is fixedly connected with the fixing base 11, so that the anti-rotation member 12 is better supported and more compact in structure.

As shown in Figure 2, the clip 13 in this embodiment is hinged to the fixed seat 11 through a rotating shaft 19; Hook-shaped, and inserted in the mounting hole 133; as shown in Figure 4, a support platform 114 is provided in the chamber, and the second end of the torsion spring 14 leans against the support platform 114; so , through the rotating shaft 19, the torsion spring 14 and the clamping member 13 are formed to rotate on the same axial direction, and the second end of the torsion spring 14 abuts against the support platform 114 of the fixed seat 11 as a fulcrum, when the torsion spring 14 rotates , so that the torsion spring 14 is deformed, and at the same time, a certain force is exerted on the clip 13. When the torsion spring 14 recovers its deformation, the clip 13 will inevitably rotate by itself.

As shown in Figures 12-15, a shower room frame described in this embodiment includes a guide rail 3 and a side frame 4, and also includes an easy-to-connect device for a shower room as described above, the guide rail 3 and the The plug connector 2 is fixedly connected, and the side frame 4 is fixedly connected to the locking mechanism 1; wherein, the plug connector 2 is inserted into the slot 131 of the clip 13, so that the side frame 4 and the locking mechanism 1 The rails 3 are quickly connected.

In addition to the frame described above, in another embodiment, another shower room frame according to the present invention includes guide rails 3 and side frames 4, and also includes the above-mentioned easy-to-connect device for a shower room. The guide rail 3 is fixedly connected to the locking mechanism 1, and the side frame 4 is fixedly connected to the plug-in piece 2; wherein, the plug-in piece 2 is inserted into the slot 131 of the clip 13, so that The side frame 4 is quickly connected to the guide rail 3 .

Specifically, the side frame 4 and the guide rail 3 in this embodiment are provided with chambers for the insertion and fixation of the plug connector 2 and the locking mechanism 1, and the side frame 4 is provided with a hole for the plug connector 2 to pass through. channel; the connector 2 is provided with a connecting part, the guide rail 3 is fixedly connected to the connecting part by screws, the side frame 4 is connected to the fixing seat 11 on the locking mechanism 1, and the card is connected to the card through the connector 2 The clamping of the member 13 makes the guide rail 3 and the side frame 4 connected into one body.

The assembly process of the connection device and the frame of the present invention may include the following steps:

1. Assembling of the locking mechanism 1: as shown in Figure 10 and Figure 11, first put the clip 13 and the torsion spring 14 into the fixing seat 11, and put the rotating shaft 19 through the torsion spring 14, the clip 13 and the fixing seat 11, To make the clip 13 and the fixed seat 11 hinged, wherein the first end of the torsion spring 14 is inserted into the attachment hole 133 of the clip 13, and the second end leans against the support platform 114 in the fixed seat 11; then Place the anti-rotation member 12 on the fixed seat 11 through the second opening 112 and the fixed platform 115; then connect the pressing assembly 15 and the first return spring 16 to the first limit post 113 of the fixed seat 11, wherein the One end of the first return spring 16 is placed in the limit hole of the guide block 152, and the other end is sleeved on the first limit post 113; finally, the second return spring 18 and the cover plate 17 are installed, wherein the The second return spring 18 is sleeved on the second limit post 122 of the anti-rotation member 12 , and the cover plate 17 is fixedly connected to the bottom of the fixing base 11 by screws.

2. Installation of the first module: As shown in Figure 12, install the connecting part of the rear end of the connector 2 into the end of the guide rail 3, and then fix it with screws to form a module, that is, install the connector 2 and the guide rail 3 into the first module.

3. Installation of the second module: As shown in Figure 13, install the locking mechanism 1 into the end of the side frame 4 to form the second module. Specifically, install the locking mechanism 1 into the chamber of the side frame 4, and The fixing base 11 is fixedly connected by screws.

4. Installation of the frame: As shown in Figure 14 and Figure 15, the first module and the second module are assembled through the connection of the connector 2 and the clip 13, that is, the assembly of the guide rail 3 and the side frame 4 is completed.

The connecting device and frame of the present invention have the following working principles:

1. The first state: as shown in Figure 5 and Figure 6, Figure 5 is a schematic side sectional view of the locking mechanism 1, Figure 6 is a schematic sectional view of the opposite side of the side view of Figure 5, the torsion spring 14 The first end is installed in the mounting hole 133 of the clip 13, the second end is against the support platform 114 in the fixed seat 11, and the end of the anti-rotation member 12 is against the On the stop portion 132 of the clip 13, at this time, the torsion spring 14 is in a compressed state, and it has an active force on the clip 13 to make the clip 13 rotate, while the anti-rotation piece 12 exerts an opposite effect on the clip 13 force, so that the clamping member 13 cannot rotate under the action of the anti-rotation member 12 .

2. Second state: as shown in FIG. 7 , in the first state, when the button part 151 is pressed, the first inclined guide surface 1521 of the guide block 152 will act on the second inclined guide surface 121 of the anti-rotation member 12 On the other hand, the anti-rotation piece 12 is further moved backward, and finally it is completely disengaged from the stop portion 132 of the clip 13. Further, the clip 13 rotates under the elastic force of the torsion spring 14. When the clip 13 touches the fixed seat When the side wall of 11 stops rotating.

3. The third state: as shown in Figure 8, in the second state, when the button part 151 is released, the pressing assembly 15 is reset under the action of the first return spring 16, and the anti-rotation member 12 is pressed against the second return spring 18. Under the action of the handle, it moves forward until it hits the clamping member 13, but at this time the anti-rotation member 12 is not locked into the stopper portion 132, so it has no effect on the rotation of the clamping member 13.

4. The fourth state: as shown in Fig. 8 and Fig. 9, when the connector 2 is installed inside, the clip 13 overcomes the force of the torsion spring 14, prompting the clip 13 to rotate, and finally the stopper 12 is just locked Into the stopper 132, so that the card 13 stops rotating, so that the socket 2 is snapped into the slot 131 of the card 13, so that the locking mechanism 1 and the socket 2 are connected; otherwise, press The button portion 151 can easily eject the plug connector 2 from the locking mechanism 1 .

5. Frame installation: In the third state, the user only needs to pass the connector 2 in the guide rail 3 directly through the channel of the side frame 4 and connect with the locking mechanism 1 in the side frame 4, which can be easily and quickly completed Frame assembly.

This embodiment adopts a modular installation design. The guide rail 3 and the connector 2 are installed as the first module, and the locking mechanism 1 and the side frame 4 are installed as the second module. The first module and the second module have been installed before leaving the factory. After installation, the user only needs to snap the connector 2 of the first module directly into the clip 13 of the second module, and then the installation of the frame can be completed quickly; in addition, as long as the button is pressed, the guide rail 3 will be is ejected to realize the easy and quick disassembly of the guide rail 3 and the side frame 4; in summary, the connection device described in this embodiment can realize quick installation and disassembly, and its operation is convenient and simple.

The foregoing description shows and describes preferred embodiments of the present invention, and as previously stated, it is to be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments but may be applied to various other embodiments. Combinations, modifications and circumstances, and can be modified within the scope of the inventive concept described herein, by the above teachings or by skill or knowledge in the relevant field. However, changes and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all be within the protection scope of the appended claims of the present invention.

Claims (10)

1. An easy-to-connect device for a shower room, characterized in that: it includes a locking mechanism and a connector; the locking mechanism includes a fixed seat, a stopper, a clip and a torsion spring; the fixed seat is provided with a chamber, The front of the chamber is provided with a first opening for the reciprocating movement of the connector, and the back of the chamber is provided with a second opening for the reciprocating movement of the anti-rotation member; Rotation is formed between the opening and the second opening; the torsion spring has a first end and a second end, the first end is connected to the clip, and the second end is against the fixed seat, so that the clip is twisted Under the action of spring force, it can rotate by itself; the clip is provided with a stopper and a slot for inserting the connector; the stopper can be horizontally reciprocated and set on the fixed seat, and its end can resist Lean against the stopper; wherein, the anti-rotation piece is away from the stopper, so that the clip rotates toward the first opening under the force of the torsion spring, and when the plug moves into the slot , and overcome the elastic force of the torsion spring to drive the clip to rotate toward the second opening, and when the stop part interferes with the anti-rotation piece, the clip stops rotating. 2. An easy-to-connect device for a shower room according to claim 1, characterized in that: the locking mechanism further includes a pressing component, the pressing component is vertically arranged on the fixing seat, and can move back and forth up and down. A first inclined guide surface is formed on the side of the pressing assembly facing the anti-rotation member, and a second inclined guide surface matching the first inclined guide surface is oppositely provided on the anti-rotation member; wherein, the pressing assembly moves downward and Through the cooperation between the first slanted guide surface and the second slanted guide surface, the anti-rotation member is displaced away from the locking member. 3. An easy-to-connect device for a shower room according to claim 2, characterized in that it further comprises a first return spring, and the two ends of the first return spring respectively abut against the bottom of the pressing assembly and the fixing seat , so that the pressing assembly is reset upwards. 4. An easy-to-connect device for a shower room according to claim 3, characterized in that: the pressing assembly includes a button part and a guide block arranged below the button part; the first inclined guide surface is arranged on the on the guide block. 5. An easy-to-connect device for a shower room as claimed in claim 4, characterized in that: the guide block is provided with a limit hole for the first return spring to be placed in, and the bottom of the fixing seat is provided with a limit hole for the first return spring. The first limit post that the return spring sockets. 6. An easy-to-connect device for a shower room according to claim 1 or 5, characterized in that: the locking mechanism also includes a cover plate and a second return spring; the cover plate is installed on the back of the fixing seat; Both ends of the second return spring are respectively pressed against the anti-rotation piece and the cover plate, so as to return the anti-rotation piece forward. 7. An easy-to-connect device for a shower room as claimed in claim 6, characterized in that: said anti-rotation member is provided with a second limit post for socketing of a second return spring, and said cover plate is provided with There is a through hole for the end of the second limiting column to pass through. 8. An easy-to-connect device for a shower room according to claim 1 or 7, characterized in that: the clip is hinged to the fixing seat through a rotating shaft; The end of the first end of the torsion spring is in the shape of a hook, and is plugged into the attachment hole; a supporting platform is provided in the chamber, and the second end of the torsion spring leans against the supporting platform. 9. A shower room frame, including guide rails and side frames, characterized in that it also includes an easy-to-connect device for a shower room according to any one of claims 1-8, the guide rail and the connector Fixed connection, the side frame is fixedly connected to the locking mechanism; wherein, the plug-in piece is inserted into the slot of the clip, so that the side frame is connected to the guide rail. 10. A shower room frame, comprising guide rails and side frames, characterized in that it also includes an easy-to-connect device for a shower room according to any one of claims 1-8, the guide rail is fixed to the locking mechanism connected, the side frame is fixedly connected to the plug-in piece; wherein, the plug-in piece is put into the slot of the clip, so that the side frame is connected to the guide rail.