Backrest assembly convenient to disassemble

Abstract

The backrest assembly comprises a back frame and a supporting frame which are connected up and down, the back frame is configured to be connected with mesh cloth, the supporting frame is configured to be connected with a seat assembly, the rear end of the back frame extends downwards in the vertical direction to form a frame body supporting part, and the supporting frame comprises a back frame connecting part extending upwards in the vertical direction; the frame body supporting part and the back frame connecting part are detachably connected, so that the frame body supporting part and the back frame connecting part have a combined state and a split state, and in the combined state, the frame body supporting part and the back frame connecting part are connected into a whole; in the split state, the frame body supporting part and the back frame connecting part are separated from each other. According to the backrest assembly convenient to disassemble, the backrest assembly can be disassembled into the back frame and the supporting frame which are small in size, so that the packaging space is effectively saved, and the transportation cost is reduced.

Description

Technical Field

[0001] The utility model generally relates to the technical field of seats, and in particular to a backrest assembly that is easy to disassemble. Background Art

[0002] Office chairs are essential seating in any workplace, offering a comfortable seating experience that can alleviate fatigue for workers who spend long hours at a desk. Existing office chairs typically consist of a backrest assembly, a seat assembly, pneumatic rods, and legs. These components are typically detachable, allowing them to be stacked together during packaging and transportation, effectively reducing packaging space and shipping costs.

[0003] However, the backrest assembly of existing office chairs is usually a one-piece structure, consisting of a back frame on the upper side for connecting to the mesh fabric and a support frame on the lower side. The support frame is a curved structure with a forward-bent bottom end for connecting to the bottom plate of the seat assembly, giving the backrest assembly an L-shaped structure. This results in the backrest assembly taking up a lot of space both horizontally and vertically, thereby increasing packaging and transportation costs.

[0004] Therefore, how to configure the backrest assembly into a structure that is easy to disassemble so as to save the cost of packaging and transportation has become a major problem that needs to be solved at present. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a backrest assembly that is easy to disassemble, which can be split into two smaller parts: a back frame and a support frame, thereby effectively saving packaging space and reducing the cost required for transportation.

[0006] The effect of the utility model is achieved in this way:

[0007] The present application provides a backrest assembly that is easy to disassemble, including a back frame and a support frame connected up and down, the back frame is configured to connect to the mesh, the support frame is configured to connect to the seat assembly, the rear end of the back frame extends downward in the vertical direction to form a frame support part, the support frame includes a back frame connecting part extending upward in the vertical direction, the frame support part and the back frame connecting part are detachably connected, so that the two have a combined state and a disassembled state. In the combined state, the frame support part and the back frame connecting part are connected as a whole; in the disassembled state, the frame support part and the back frame connecting part are separated from each other.

[0008] Furthermore, a removable connection is achieved between the frame support portion and the back frame connection portion via a plug-in structure. The plug-in structure includes a plug-in slot and a plug-in portion that plug into and fit together. The plug-in slot is vertically disposed in one of the frame support portion and the back frame connection portion, and the plug-in portion is correspondingly disposed in the other of the frame support portion and the back frame connection portion. Through the plug-in engagement of the plug-in portion and the plug-in slot, the frame support portion can be vertically inserted into or removed from the back frame connection portion, thereby driving the back frame to be inserted, fixed, or removed from the support frame. The removable connection between the frame support portion and the back frame connection portion achieved via the plug-in structure makes installation and removal operations between the two very simple.

[0009] Furthermore, the top of the back frame connection portion extends upward to form two symmetrical clamping portions. When assembled, the two clamping portions adhere to the left and right sides of the frame support portion. The two clamping portions sandwich the frame support portion, effectively increasing the connection strength between the frame support portion and the back frame connection portion, thereby improving the stability of the backrest assembly.

[0010] Furthermore, the plug-in portion is provided on one side of the clamping portion close to the frame support portion, and the left and right ends of the frame support portion are recessed to form plug-in slots, so that the frame support portion and the back frame connection portion remain relatively fixed in the horizontal direction, and have good stability.

[0011] Furthermore, a limiting structure is provided between the insertion slot and the insertion portion. The limiting structure comprises a limiting protrusion and a limiting groove that engage with each other. The limiting protrusion is provided on one of the insertion slot wall and the insertion portion side wall, and the limiting groove is correspondingly provided on the other of the insertion slot wall and the insertion portion side wall. In the assembled state, the limiting protrusion engages with the limiting groove, so that the insertion portion and the insertion slot remain relatively fixed in the horizontal direction. This allows the insertion portion to be stably engaged in the insertion slot and is not easily dislodged, thereby further improving the connection strength between the frame support portion and the back frame connection portion, and enhancing the stability of the backrest assembly.

[0012] Furthermore, in the assembled state, the frame support portion and the back frame connection portion are relatively fixed by screw connection, which not only makes the connection strength between the frame support portion and the back frame connection portion more reliable in the assembled state, but also makes the installation and removal operations between the two easier.

[0013] Furthermore, a positioning structure is provided between the frame support portion and the back frame connection portion. The positioning structure includes a positioning protrusion and a positioning slot that engage with each other. The positioning slot is vertically provided at one of the lower end of the frame support portion and the upper end of the back frame connection portion, and the positioning protrusion is correspondingly provided at the other of the lower end of the frame support portion and the upper end of the back frame connection portion. In the assembled state, the positioning protrusion engages with the positioning slot, and a screw passes through the positioning protrusion and the positioning slot, thereby screwing the frame support portion and the back frame connection portion together. This makes the positioning operation between the frame support portion and the back frame connection portion relatively simple.

[0014] Furthermore, the upper end of the back frame connecting portion is recessed downward to form a positioning groove, and a positioning protrusion is correspondingly provided at the lower end of the frame support portion. The front side of the positioning groove is open, so that when assembled, the front end of the positioning protrusion is exposed from the back frame connecting portion, and a screw is screwed into the front end of the positioning protrusion to screw the positioning protrusion into the back frame connecting portion. This not only facilitates the positioning protrusion to snap into the positioning groove for positioning, but also allows the screw to be screwed directly into the front side of the positioning protrusion for securing, further enhancing the convenience of installation and removal between the frame support portion and the back frame connecting portion.

[0015] Furthermore, a decorative panel is detachably connected to the rear end of the frame support portion. The decorative panel covers the side edges of the frame support portion, thereby concealing the connection marks between the frame support portion and the back frame connection portion. The decorative panel not only serves to decorate and beautify the backrest assembly, but also, by concealing the connection marks between the frame support portion and the back frame connection portion, makes the backrest assembly more integrated and enhances its aesthetics.

[0016] Furthermore, the decorative panel and the frame support are detachably connected via a snap-fit structure comprising a plurality of snaps and slots that engage with each other. The snaps are provided on one of the decorative panel and the frame support, and the slots are provided on the other. Connecting the decorative panel and the frame support via the snap-fit structure provides a simple structure and facilitates installation and removal.

[0017] The disassembly-friendly backrest assembly provided in the present application provides a detachable structure between the frame support portion and the back frame connection portion, so that the backrest assembly that occupies a larger space can be split into two smaller parts, a back frame and a support frame. After splitting, the backrest assembly can be stacked with other components of the seat, thereby effectively saving packaging space and reducing the cost required for transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a backrest assembly provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the back structure of the backrest assembly in the assembled state provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the back structure of the backrest assembly in the disassembled state provided in an embodiment of the present application;

[0022] Figure 4A schematic diagram of the connection structure between the back frame and the support frame provided in an embodiment of the present application;

[0023] Figure 5 A bottom-view structural diagram of a back frame provided in an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the three-dimensional structure of the support frame provided in an embodiment of the present application;

[0025] Figure 7 A schematic cross-sectional view of the backrest assembly in the assembled state provided in an embodiment of the present application;

[0026] Figure 8 Schematic diagram of the connection structure between the decorative panel and the frame support portion provided in an embodiment of the present application.

[0027] The figures are marked as follows: 1-back frame, 110-frame support part, 111-plug-in slot, 112-limiting slot, 113-positioning protrusion, 114-card slot, 115-support protrusion, 120-decorative plate, 121-card buckle, 2-support frame, 210-back frame connecting part, 211-plug-in part, 212-limiting protrusion, 213-positioning slot, 220-clamping part. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0029] Please refer to the attached Figure 1-8 The embodiment of the present application provides a backrest assembly that is easy to disassemble, including a back frame 1 and a support frame 2 connected up and down, the back frame 1 is configured to connect the mesh, and the support frame 2 is configured to connect the seat assembly, the rear end of the back frame 1 extends downward in the vertical direction to form a frame support portion 110, and the support frame 2 includes a back frame connection portion 210 extending upward in the vertical direction, the frame support portion 110 and the back frame connection portion 210 are detachably connected, so that the two have a combined state and a disassembled state. In the combined state, the frame support portion 110 and the back frame connection portion 210 are connected as a whole; in the disassembled state, the frame support portion 110 and the back frame connection portion 210 are separated from each other.

[0030] In this embodiment, a detachable structure is provided between the frame support portion 110 and the back frame connection portion 210, so that the backrest assembly that occupies a larger space can be split into two smaller parts, the back frame 1 and the support frame 2, and then stacked with other components of the seat after splitting, thereby effectively saving packaging space and reducing the cost required for transportation.

[0031] The support frame 2 is an L-shaped structure, and the portion thereof extending horizontally forward is configured as a chassis connected to the seat.

[0032] Please refer to the attached Figure 3-4 In some embodiments of the present application, a removable connection is achieved between the frame support portion 110 and the back frame connection portion 210 via a plug-in structure. The plug-in structure includes a plug-in slot 111 and a plug-in portion 211 that plug into and mate with each other. The plug-in slot 111 is vertically disposed in one of the frame support portion 110 and the back frame connection portion 210, and the plug-in portion 211 is correspondingly disposed in the other of the frame support portion 110 and the back frame connection portion 210. Through the plug-in engagement of the plug-in portion 211 and the plug-in slot 111, the frame support portion 110 can be vertically inserted into or removed from the back frame connection portion 210, thereby driving the back frame 1 to be inserted, fixed, or removed from the support frame 2. The removable connection between the frame support portion 110 and the back frame connection portion 210 achieved via the plug-in structure makes installation and removal operations between the two very simple.

[0033] Among them, preferably, the plug-in portion 211 also has a long strip structure extending in the vertical direction, so that during the installation process, the plug-in portion 211 can play a guiding role, guiding the frame support portion 110 to be inserted into the back frame connection portion 210 in the vertical direction, making the installation and disassembly operations more stable and smooth.

[0034] Please refer to the attached Figure 3-4 In some embodiments of the present application, the top of the back frame connecting portion 210 extends upward to form two left-right symmetrical clamping portions 220 . In the assembled state, the two clamping portions 220 are attached to the left and right sides of the frame supporting portion 110 .

[0035] In this embodiment, two clamping portions 220 are provided to clamp the frame support portion 110 in the middle, so that the frame support portion 110 is not easily shaken left and right in the assembled state, thereby effectively improving the connection strength between the frame support portion 110 and the back frame connection portion 210, thereby improving the stability of the backrest assembly.

[0036] Please refer to the attached Figure 3-4 In some embodiments of the present application, the plug-in portion 211 is disposed on one side of the clamping portion 220 close to the frame support portion 110 , and the left and right ends of the frame support portion 110 are correspondingly recessed to form the plug-in slots 111 .

[0037] In this embodiment, by arranging the plug-in structure between the clamping portion 220 and the frame support portion 110, in the assembled state, the frame support portion 110 is not only limited by the clamping portion 220 in the left and right directions, but also by the plug-in portion 211 and the plug-in slot 111 in the front and back directions, thereby making the frame support portion 110 relatively fixed in the horizontal direction with the back frame connection portion 210, and having better stability.

[0038] Of course, in other embodiments of the present application, the plugging portion 211 may also be provided at the left and right ends of the frame support portion 110 , and the side of the clamping portion 220 close to the frame support portion 110 is correspondingly recessed to form the plugging slot 111 .

[0039] Please refer to the attached Figure 5-7 In some embodiments of the present application, a limiting structure is further provided between the plug-in slot 111 and the plug-in portion 211, and the limiting structure includes a limiting protrusion 212 and a limiting slot 112 that are engaged with each other, and the limiting protrusion 212 is provided in one of the slot wall of the plug-in slot 111 and the side wall of the plug-in portion 211, and the limiting slot 112 is correspondingly opened in the other of the slot wall of the plug-in slot 111 and the side wall of the plug-in portion 211; in the combined state, the limiting protrusion 212 is snapped into the limiting slot 112, so that the plug-in portion 211 and the plug-in slot 111 remain relatively fixed in the horizontal direction.

[0040] In this embodiment, the back frame 1 and support frame 2 are both made of plastic. When the backrest assembly supports the user's back and is subjected to pressure, the frame support portion 110 and the back frame connecting portion 210 may deform. Therefore, by providing a limiting structure, when the frame support portion 110 and the back frame connecting portion 210 are compressed and deformed, the plug portion 211 can still be stably engaged in the plug slot 111 and is not easily dislodged, thereby further improving the connection strength between the frame support portion 110 and the back frame connecting portion 210 and enhancing the stability of the backrest assembly.

[0041] Preferably, the top of the plug portion 211 extends in the front-to-back direction to form a limiting protrusion 212, so that the plug portion 211 has an overall T-shaped structure, and the front and rear side walls of the plug slot 111 are also correspondingly recessed to form limiting grooves 112, so that the connection strength between the plug portion 211 and the plug slot 111 is more reliable. Of course, in other embodiments of the present application, the plug portion 211 can also have a dovetail structure, an L-shaped structure, etc.

[0042] Please refer to the attached Figure 1 In some embodiments of the present application, in the assembled state, the frame support portion 110 and the back frame connection portion 210 are relatively fixed by screw connection. This not only ensures a more reliable connection strength between the frame support portion 110 and the back frame connection portion 210 in the assembled state, but also facilitates installation and removal operations between the two.

[0043] Please refer to the attached Figure 4-6In some embodiments of the present application, a positioning structure is further provided between the frame support portion 110 and the back frame connection portion 210, and the positioning structure includes a positioning protrusion 113 and a positioning groove 213 that are engaged with each other. The positioning groove 213 is vertically opened at one of the lower end of the frame support portion 110 and the upper end of the back frame connection portion 210, and the positioning protrusion 113 is correspondingly provided at the other of the lower end of the frame support portion 110 and the upper end of the back frame connection portion 210; in the assembled state, the positioning protrusion 113 is inserted into the positioning groove 213, and the screw passes through the positioning protrusion 113 and the positioning groove 213 to screw the frame support portion 110 and the back frame connection portion 210 together.

[0044] In this embodiment, by providing mutually engaging positioning structures, when the frame support portion 110 is installed to the back frame connection portion 210, the positioning protrusion 113 and the positioning groove 213 are engaged with each other, thereby achieving preliminary positioning between the frame support portion 110 and the back frame connection portion 210, and screws are screwed into the positioning protrusion 113 and the positioning groove 213 to achieve fixation, making the positioning operation between the two relatively simple.

[0045] Please refer to the attached Figure 1-4 In some embodiments of the present application, the upper end of the back frame connection portion 210 is recessed downward to form a positioning groove 213, and the positioning protrusion 113 is correspondingly arranged at the lower end of the frame support portion 110; and the front side of the positioning groove 213 is opened, so that in the assembled state, the front end of the positioning protrusion 113 is exposed from the back frame connection portion 210, and a screw is screwed into the front end of the positioning protrusion 113 and the positioning protrusion 113 is screwed and fixed to the back frame connection portion 210.

[0046] In this embodiment, by setting the front opening of the positioning groove 213, not only is it convenient for the positioning protrusion 113 to be snapped in to achieve positioning, but the screws can also be directly screwed in from the front side of the positioning protrusion 113 to achieve fixation, thereby further improving the convenience of installation and disassembly operations between the frame support part 110 and the back frame connection part 210.

[0047] Of course, in other embodiments of the present application, the positioning groove 213 may also be recessed and arranged at the lower end of the frame support portion, and the positioning protrusion 113 may be correspondingly arranged at the upper end of the back frame connection portion 210 .

[0048] Please refer to the attached Figure 7-8 In some embodiments of the present application, a decorative panel 120 is detachably connected to the rear end of the frame support portion 110. The decorative panel 120 covers the side edges of the frame support portion 110, thereby concealing the connection traces between the frame support portion 110 and the back frame connection portion 210. The decorative panel 120 not only decorates and beautifies the backrest assembly, but also, by concealing the connection traces between the frame support portion 110 and the back frame connection portion 210, makes the backrest assembly more integrated and enhances its aesthetics.

[0049] The decorative panel 120 has a U-shaped cross-section, and the side edges of the frame support portion 110 are recessed to form a groove for mounting the decorative panel 120. This allows the outer surface of the decorative panel 120 to connect with the outer surfaces of the frame support portion 110 and the back frame connection portion 210 to form a single, flat surface after installation, further enhancing the overall aesthetics of the backrest assembly. Furthermore, the side edges of the frame support portion 110 are provided with a plurality of support protrusions 115. When the decorative panel 120 is mounted on the frame support portion 110, the support protrusions 115 abut against the inner sidewalls of the decorative panel 120. This prevents the decorative panel 120 from falling off the frame support portion 110 when the backrest assembly is deformed under pressure, thereby enhancing the connection strength between the decorative panel 120 and the frame support portion 110.

[0050] Please refer to the attached Figure 7-8 In some embodiments of the present application, the decorative panel 120 and the frame support portion 110 are detachably connected via a snap-fit structure. The snap-fit structure includes a plurality of snaps 121 and slots 114 that engage with each other. The snaps 121 are provided on one of the decorative panel 120 and the frame support portion 110, and the slots 114 are provided on the other of the decorative panel 120 and the frame support portion 110. Connecting the decorative panel 120 and the frame support portion 110 via the snap-fit structure provides a simple structure and facilitates installation and removal.

[0051] Preferably, a plurality of buckles 121 are provided on the front end surface of the decorative plate 120, and a plurality of slots 114 are correspondingly provided on the side edges of the frame support portion 110. Of course, in other embodiments of the present application, a plurality of buckles 121 may also be provided on the side edges of the frame support portion 110, and a plurality of slots 114 are correspondingly provided on the decorative plate 120.

[0052] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means more than three.

[0053] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A backrest assembly that is easy to disassemble, characterized in that: The invention comprises a back frame (1) and a support frame (2) connected to each other in an upper and lower manner, wherein the back frame (1) is configured to connect a mesh, and the support frame (2) is configured to connect a chair seat assembly, the rear end of the back frame (1) extends downward in a vertical direction to form a frame support portion (110), and the support frame (2) comprises a back frame connection portion (210) extending upward in a vertical direction, and the frame support portion (110) and the back frame connection portion (210) are detachably connected to each other so that the two have a combined state and a disassembled state, in which the frame support portion (110) and the back frame connection portion (210) are connected as a whole in the combined state; in the disassembled state, the frame support portion (110) and the back frame connection portion (210) are separated from each other.

2. The disassembly-friendly backrest assembly according to claim 1, characterized in that: The frame support portion (110) and the back frame connection portion (210) are detachably connected via a plug-in structure, wherein the plug-in structure comprises a plug-in slot (111) and a plug-in portion (211) that are plugged into and matched with each other, wherein the plug-in slot (111) is vertically arranged at one of the frame support portion (110) and the back frame connection portion (210), and the plug-in portion (211) is correspondingly arranged at the other of the frame support portion (110) and the back frame connection portion (210); through the plug-in cooperation between the plug-in portion (211) and the plug-in slot (111), the frame support portion (110) can be inserted into or detached from the back frame connection portion (210) in the vertical direction, thereby driving the back frame (1) to be inserted and fixed or to be pulled out and detached from the support frame (2).

3. The disassembly-friendly backrest assembly according to claim 2, characterized in that: The top end of the back frame connecting portion (210) extends upward to form two left-right symmetrical clamping portions (220); in the assembled state, the two clamping portions (220) are attached to the left and right sides of the frame supporting portion (110).

4. The disassembly-friendly backrest assembly according to claim 3, characterized in that: The plug-in portion (211) is provided on one side of the clamping portion (220) close to the frame support portion (110), and the left and right ends of the frame support portion (110) are correspondingly recessed to form the plug-in slot (111).

5. The disassembly-friendly backrest assembly according to claim 2, characterized in that: A limiting structure is further provided between the plug-in slot (111) and the plug-in portion (211), the limiting structure comprising a limiting protrusion (212) and a limiting slot (112) that are engaged with each other, the limiting protrusion (212) being provided on one of the slot wall of the plug-in slot (111) and the side wall of the plug-in portion (211), and the limiting slot (112) being correspondingly provided on the other of the slot wall of the plug-in slot (111) and the side wall of the plug-in portion (211); in the assembled state, the limiting protrusion (212) is engaged with the limiting slot (112), so that the plug-in portion (211) and the plug-in slot (111) remain relatively fixed in the horizontal direction.

6. The disassembly-friendly backrest assembly according to claim 1, characterized in that: In the assembled state, the frame support portion (110) and the back frame connection portion (210) are kept relatively fixed by means of screw connection.

7. The disassembly-friendly backrest assembly according to claim 2, characterized in that: A positioning structure is further provided between the frame support portion (110) and the back frame connection portion (210), the positioning structure comprising a positioning protrusion (113) and a positioning groove (213) that are engaged with each other, the positioning groove (213) being vertically arranged at one of the lower end of the frame support portion (110) and the upper end of the back frame connection portion (210), and the positioning protrusion (113) being correspondingly arranged at the other of the lower end of the frame support portion (110) and the upper end of the back frame connection portion (210); in a combined state, the positioning protrusion (113) is engaged with the positioning groove (213), and a screw passes through the positioning protrusion (113) and the positioning groove (213) to screw the frame support portion (110) and the back frame connection portion (210) together.

8. The disassembly-friendly backrest assembly according to claim 7, characterized in that: The upper end of the back frame connecting portion (210) is recessed downward to form the positioning groove (213), and the positioning protrusion (113) is correspondingly arranged at the lower end of the frame supporting portion (110); and the front side of the positioning groove (213) is opened so that in the assembled state, the front end of the positioning protrusion (113) is exposed from the back frame connecting portion (210), and a screw is screwed into the front end of the positioning protrusion (113) and the positioning protrusion (113) is screwed and fixed to the back frame connecting portion (210).

9. The disassembly-friendly backrest assembly according to claim 1, characterized in that: A decorative plate (120) is detachably connected to the rear end of the frame support portion (110), and the decorative plate (120) covers the side edge of the frame support portion (110), thereby covering the connection traces between the frame support portion (110) and the back frame connection portion (210).

10. The disassembly-friendly backrest assembly according to claim 9, characterized in that: The decorative plate (120) and the frame support portion (110) are detachably connected via a snap-fit structure, wherein the snap-fit structure comprises a plurality of snap-fits (121) and snap-fit slots (114) that engage with each other, wherein the plurality of snap-fits (121) are provided on one of the decorative plate (120) and the frame support portion (110), and the plurality of snap-fit slots (114) are correspondingly provided on the other of the decorative plate (120) and the frame support portion (110).

Images