An assembled panel component

Abstract

The present invention relates to a prefabricated panel assembly for a wall-mounted shower faucet, comprising: a panel, which is configured as a shell cover type and has a main plane, and a receiving hole is formed in the main plane; a bottom plate, which is located on one side of the panel and has a corresponding engaging portion that matches the receiving hole, and is configured as a flange that defines an engaging hole; a housing, which is configured to accommodate a button group, the housing is located on the other side of the panel and is detachably engaged with the engaging portion of the bottom plate to be fixedly attached to the panel relative to the bottom plate, and the button group is configured to move axially relative to the engaging hole of the bottom plate to drive the button valve core to open or close. The prefabricated panel assembly uses an innovative structural design to enable the application of a flat-surface panel in a wall-mounted shower faucet, and the reasonable cooperation between the panel assemblies optimizes the function of the button group. Such a panel can meet various surface treatments required in the later processes, overcoming many defects existing in the panels with uneven surfaces in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of shower devices, and particularly to an assembled panel assembly applied to a wall-mounted shower faucet. Background Art

[0002] The existing panel assemblies applied to wall-mounted shower faucets usually form button protrusions on the panel surface, and the existence of the button protrusions is not conducive to the subsequent surface treatment processes of the panel, such as polishing, wire drawing, multi-color matching, etc. This results in complex, time-consuming, and low-efficiency subsequent surface treatment processes, and thus is not conducive to the high-efficiency mass production of such traditional integral panels. In addition, the integral metal panel assembly has the defect of high cost, while the integral plastic panel assembly cannot be widely recognized by users due to poor process strength and appearance.

[0003] Therefore, there is still a need to improve the panel assembly applied to wall-mounted shower faucets in the related field to further optimize its manufacturing, installation, use and other performances to improve or solve the problems existing in the prior art. Summary of the Invention

[0004] Therefore, the task of the present invention is to provide an assembled panel assembly to overcome the above-mentioned disadvantages of the prior art.

[0005] To accomplish the above task, the present invention provides an assembled panel assembly for a wall-mounted shower faucet, characterized by comprising: a panel, which is configured as a shell cover type and has a main plane, and a receiving hole is formed on the main plane; a bottom plate, which is located on one side of the panel and has a corresponding engaging portion matching the receiving hole, and the engaging portion is configured as a flange defining an engaging hole; a housing, which is configured to accommodate a button group, the housing is located on the other side of the panel and is detachably engaged with the engaging portion of the bottom plate to be relatively fixed to the panel with respect to the bottom plate, and the button group is configured to axially move relative to the engaging hole of the bottom plate to drive a button valve core for conducting or intercepting fluid to open or close.

[0006] As a preferred embodiment, the button group includes a button body, the button body is accommodated in the housing and partially extends through the engaging hole of the bottom plate to be non-rotatably engaged with the engaging portion, and the button body is configured to be able to move axially along the engaging hole and abut against the button valve core on the side of the bottom plate away from the panel to drive it to open or close.

[0007] As a preferred embodiment, the button body includes: a head received in the housing and a shaft portion extending axially through the engagement hole and having a smaller diameter relative to the head; the assembled panel assembly further includes: a limiting member snap-fitted to the shaft portion on a side of the shaft portion away from the head; an elastic member sleeved on the shaft portion, one end of the elastic member in the axial direction abuts against the head, and the other end abuts against the limiting member, so that the button body can elastically approach or move away from the bottom plate along the axial direction to close or open the button valve core.

[0008] As a preferred embodiment, the button group further includes: a button cover non-rotatably engaged to one side of the head of the button body; a fixing member engaged to the button cover to fix the button cover to the button body.

[0009] As a preferred embodiment, the engaging portion of the housing and the bottom plate is engaged and received in an annular gap defined by the engaging portion of the bottom plate extending through the receiving hole and the receiving hole, so as to position the housing relative to the panel.

[0010] As a preferred embodiment, mounting holes for assembling a temperature adjusting member are further provided on the main plane of the panel, the bottom plate has corresponding mating portions matching the mounting holes, and the mounting holes and the convex ring are positioned relative to each other through the cooperation of a notch and a convex block.

[0011] As a preferred embodiment, ribs are provided on a side of the bottom plate facing the panel, and the ribs are configured to be arranged to avoid the receiving holes on the panel.

[0012] As a preferred embodiment, a convex portion extending toward one side of the shaft is provided on the periphery of the head of the button body; the housing includes: a connecting portion conforming to the annular gap; an outer ring member located on the outer periphery of the connecting portion and having a diameter larger than the receiving hole; an inner ring member located on the inner periphery of the connecting portion and engaged with the engaging portion, and the outer ring member, the connecting portion and the inner ring member jointly define a concave portion; the concave portion of the housing is axially opposite to the convex portion of the button body and guides the convex portion to move axially toward the concave portion.

[0013] As a preferred embodiment, the shaft portion of the button body and the engaging portion of the bottom plate are non-rotatably engaged with each other through the cooperation of a notch and a convex rib.

[0014] As a preferred embodiment, the shaft portion of the button body and the button cover are non-rotatably engaged with each other through the cooperation of a notch and a convex rib on one side of the head of the button body.

[0015] Some of the other features and advantages of the present invention will be apparent to those skilled in the art who have read the present invention, and some will be described in the following detailed description in conjunction with the accompanying drawings. Description of the Drawings

[0016] Hereinafter, embodiments of the present invention will be described in detail in conjunction with the accompanying drawings, where:

[0017] Figure 1 is an exploded view of the prefabricated panel assembly according to the present invention;

[0018] Figure 2 is a partial assembly view of the prefabricated panel assembly according to the present invention;

[0019] Figure 3 is a partial exploded view of the prefabricated panel assembly according to the present invention;

[0020] Figure 4 is Figure 3 the rear view of the partially assembled prefabricated panel assembly of

[0021] Figure 5 is Figure 3 the front view of the fully assembled prefabricated panel assembly of

[0022] Figures 6-7 is a perspective view of the button body of the prefabricated panel assembly according to the present invention;

[0023] Figure 8 is a bottom perspective view of the button cover of the prefabricated panel assembly according to the present invention;

[0024] Figure 9 is Figure 4 the cross-sectional view of the partially assembled prefabricated panel assembly shown in

[0025] Figure 10 is the cross-sectional view of the fully assembled prefabricated panel assembly according to the present invention.

[0026] Description of the Reference Numerals

[0027] 1 - Panel assembly; 10 - Panel; 100 - Accommodating hole; 102 - Mounting hole; 102a - Notch; 12 - Bottom plate; 120 - Joint portion; 120a - First rib; 122 - Joint hole; 124 - Fitting portion; 124a - Protrusion; 124b - Fitting hole; 128 - Rib; 13 - Housing; 130 - Connection portion; 132 - Outer ring member; 134 - Inner ring member; 136 - Recess; 14 - Button group; 140 - Button body; 140a - Head; 140b - Shaft rod portion; 140c - Protrusion; 140d - First groove; 140e - Second rib; 142 - Button cover; 142a - Cover body; 142b - Base portion; 142c - Second groove; 144 - Fastening member; 15 - Elastic member; 16 - Limiting member; 17 - Annular gap. Detailed implementation mode

[0028] Now refer to the drawings to detail an exemplary solution of the assembled panel assembly according to the present invention. The drawings are provided to present multiple embodiments of the present invention, but the drawings do not have to be drawn according to the dimensions of specific implementation solutions, and some features may be enlarged, removed, or sectioned locally to better show and explain the disclosure of the present invention. Some components in the drawings can be adjusted in position according to actual needs without affecting the technical effect. Phrases such as "in the drawings" or similar terms appearing in the specification do not have to refer to all the drawings or examples.

[0029] Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "upper", "lower" and other directional terms will be understood to have their normal meanings and refer to those directions involved when normally viewing the drawings. Unless otherwise specified, the directional terms described in this specification are basically in the conventional directions understood by those skilled in the art.

[0030] The terms "first", "the first", "second", "the second" and their similar terms used in the present invention do not represent any order, quantity or importance in the present invention, but are used to distinguish one component from other components.

[0031] In this article, with respect to the term "substantially", it means that the cited parameter or value does not need to be precisely achieved, and deviations or variations (wherein, the deviations or variations include: for example, tolerances, measurement errors, measurement accuracy limitations and other factors known to those skilled in the art) can occur in a total amount that does not prevent the effect provided by the desired feature.

[0032] Figure 1 is an exploded view of the assembled panel assembly 1 according to the present invention. The assembled panel assembly 1 is particularly applicable to a wall-mounted shower faucet, such as Figure 1As shown, the prefabricated panel assembly 1 includes a panel 10, a bottom plate 12, a housing 13, a button group 14, an elastic member 15, and a limiting member 16.

[0033] Specifically, the panel 10 is configured as a shell cover type and especially a decorative panel. The panel 10 has a main plane, and accommodation holes 100 are provided on the main plane. The number of the accommodation holes 100 can optionally be at least one, preferably two. Those skilled in the art can adjust the number of the accommodation holes 100 according to needs. Usually, two accommodation holes 100 are applied to two button groups 14 for respectively controlling a shower head (fixed shower head or handheld shower head) and a faucet (such as a bathtub faucet) and related structural members. Mounting holes 102 are also provided on the main plane of the panel 10 for assembling a temperature adjusting member. The temperature adjusting member is usually used to adjust the water outlet temperature to meet the user's water temperature requirements.

[0034] See Figure 3 , the bottom plate 12 is on one side of the panel 10, especially on the side of the panel 10 close to the installation wall, such as Figure 1 shown on the right side. The bottom plate 12 is provided with a joint portion 120 on the side facing the panel 10. The joint portion 120 corresponds to and matches the position of the accommodation hole 100. The joint portion 120 is configured as a flange defining a joint hole 122.

[0035] See Figure 1 , Figure 5 , Figure 9 and Figure 10 , the above-mentioned housing 13 is used to accommodate the button group 14, and the housing 13 is generally configured as an annular structure. The housing 13 includes a connecting portion 130, an outer ring member 132, and an inner ring member 134. Among them, the connecting portion 130 conforms to an annular gap 17 defined by the joint portion 120 (i.e., the flange) of the bottom plate 12 and the accommodation hole 100 of the panel 10 (as Figure 2 shown). The outer ring member 132 is located on the outer periphery of the connecting portion 130 and its diameter is slightly larger than that of the accommodation hole 100 to abut against the edge of the accommodation hole 100 so as to limit the housing 13 in the annular gap 17. The inner ring member 134 is located on the inner periphery of the connecting portion 130 and engages with the joint portion 120 (i.e., the flange) of the bottom plate 12. The height of the outer ring member 132 in the axial direction is greater than that of the inner ring member 134, and the height of the inner ring member 134 in the axial direction is greater than that of the connecting portion 130. The inner ring member 134, the connecting portion 130, and the outer ring member 132 jointly define a recess 136. The recess 136 is located between the inner ring member in 134 and the outer ring member 132, and the recess 136 is disposed opposite to a convex portion 140c of a button body 140 mentioned below.

[0036] Such as Figures 3 to 5 and Figure 10As shown, the button group 14 is used to control the opening and closing of the valve associated therewith, especially the button valve core. The housing 13 is located on the side of the panel 10 facing away from the wall, and is detachably joined (e.g., threaded connection) to the joint portion 120 (i.e., flange) of the bottom plate 12, so that the housing 13 and the bottom plate 12 are fixed to the panel 10 relative to each other. The above-mentioned button group 14 is accommodated in the housing 13 and can move axially relative to the engagement hole 122 of the bottom plate 12, so as to drive the button valve core associated therewith to open or close to conduct or cut off the fluid.

[0037] As Figure 1 and Figure 3 shown, corresponding to the mounting hole 102 for assembling the temperature regulating member provided on the main plane of the panel 10, the bottom plate 12 has a mating portion 124 that matches the mounting hole 102. The mating portion 124 is a convex ring defining a mating hole 124b, and the position of the mating hole 124b corresponds to that of the mounting hole 102. The mounting hole 102 on the panel 10 and the convex ring on the bottom plate 12 are positioned relative to each other by the cooperation of the notches 102a and the bumps 124a provided on their circumferences respectively. Optionally, the positions of the notches 102a and the bumps 124a on the panel 10 and the bottom plate 12 can be interchanged.

[0038] See Figure 1 or Figure 3 , on the side of the bottom plate 12 facing the panel 10, ribs 128 are further provided. The ribs 128 are arranged around the joint portion 120 (i.e., flange) and have a certain interval therewith. This interval satisfies the following condition, that is, after the flange is inserted into the receiving hole 100, the annular gap 17 formed by the flange and the receiving hole 100 will not interfere with the ribs 128. The provision of the ribs 128 results in an axial distance between the bottom plate 12 and the panel 10 when they are assembled together, and this axial distance can accommodate part of the housing 13 to position the housing 13.

[0039] See Figure 1 , Figures 6 to 8, the button group 14 includes a button body 140, a button cover 142, and a fixing member 144. Among them, when the button group 14 is assembled with the housing 13, the button body 140 is received in the housing 13 and partially passes through the housing 13 to extend through the engagement hole 122 of the bottom plate 12, so as to be non-rotatably engaged with the engagement portion 120 (i.e., the flange) that defines the engagement hole 122. Specifically, the shaft portion 140b of the button body 140 and the flange of the bottom plate 12 are non-rotatably engaged with each other through the cooperation of the first groove 140d and the first rib 120a. The first groove 140d and the first rib 120a are arranged along the axial direction of their respective structures. Optionally, the positions of the first groove 140d and the first rib 120a can be interchanged. Those skilled in the art can adaptively adjust the number of the first groove 140d and the first rib 120a according to needs. The button body 140 can move axially along the engagement hole 122 of the bottom plate 12 and abut against the button valve core on the side of the bottom plate 12 away from the panel 10, so as to realize linkage with the button valve core to control its opening or closing. The button cover 142, the housing 13, and the panel 10 can optionally be made of metal, such as copper, aluminum alloy, zinc alloy, etc. The button body 140 and the bottom plate 12 can optionally be made of non-metal, such as ABS, POM, etc.

[0040] Specifically, as Figures 7 to 8 shown, the button body 140 includes a head 140a and a shaft portion 140b, and its shape is similar to a screw, and the head 140a extends radially from the shaft portion 140b. When assembled with the housing 13, the head 140a of the button body 140 is received in the housing 13, and its shaft portion 140b extends axially along the head 140a and has a smaller diameter relative to the head 140a. The assembled panel assembly 1 further includes a limiting member 16 and an elastic member 15. Among them, the limiting member 16 is on the side of the shaft portion 140b away from the head 140a and is clamped to the shaft portion 140b, especially the card slot provided in the circumferential direction of the shaft portion 140b, and the elastic member 15 is sleeved on the shaft portion 140b. One end of the elastic member 15 abuts against the engagement portion 120 (i.e., the flange, especially the radially inward limiting portion of the flange) of the bottom plate 12, and the other end abuts against the limiting member 16. The limiting member 16 limits the compression space of the elastic member 15 and limits the axial movement distance of the button group 14 to prevent it from detaching from the bottom plate 12.

[0041] Here, the limiting member 16 is optionally a snap ring, and the elastic member 15 is optionally a spring, such as a helical spring. Of course, under the teaching of the present invention, those skilled in the art can select other suitable limiting members 16 and elastic members 15, and this does not depart from the present invention. The head 140a of the button body 140 can elastically approach or move away from the bottom plate 12 along the axial direction (i.e., the button body 140 elastically approaches or moves away from the wall), and the above movement of the button body 140 is associated with the opening and closing of the button valve core.

[0042] See Figure 8 , the button cover 142 mentioned above includes a cover body 142a and a base 142b. The cover body 142a is a circular plate-like member, and the base 142b is a rod-like member. The base 142b is provided with a second groove 142c extending along its axial direction in the radial direction. The second groove 142c is arranged corresponding to and cooperating with the second rib 140e provided on one side of the head 140a of the button body 140, so that the button cover 142 is anti-rotationally mounted to one side of the head 140a of the button body 140. The anti-rotation engagement of the button body 140, especially its shaft rod portion 140b, with the button cover 142 on one side of the head 140a is achieved through the cooperation of their respective second grooves 142c and second ribs 140e. The second groove 142c and the second rib 140e are arranged along the axial direction of their respective structures. The surface of the cover body 142a of the button cover 142 is usually used to attach an indication mark to prompt the operator of the function of the button, such as whether it controls a shower head or a faucet. The anti-rotation design of the button cover 142 and the button body 140 effectively prevents the rotation of the button cover 142 so that the indication mark attached thereto is always in the correct position for easy identification by the operator.

[0043] See Figure 1 and Figure 10 , the fixing member 144 is used to fix the button cover 142 to the button body 140. The shaft rod portion 140b of the button body 140 is configured as a substantially hollow structure and has a boss extending radially inward along the shaft rod portion 140b. The boss is provided with a fixing hole for the fixing member 144 to pass through. The fixing member 144 is optionally a screw. The screw rod of the screw passes through the fixing hole and engages with the base 142b of the button cover 142, and the screw head of the screw abuts against the boss, thereby fixing the button cover 142 to the button body 140.

[0044] See again Figure 10 , the button body 140 is further provided with a convex portion 140c extending toward one side of the shaft rod at the periphery of its head 140a. The convex portion 140c is arranged opposite to the concave portion 136 (as described above) defined by the housing 13 and guides the convex portion 140c of the button body 140 to move axially toward the concave portion 136 of the housing 13.

[0045] As Figure 2 and Figure 5 shown, after the bottom plate 12 is assembled to the panel 10, the joint portion 120 (i.e., the flange) of the bottom plate 12 and the receiving hole 100 of the panel 10 jointly define an annular gap 17. The housing 13 is placed at the annular gap 17 and engages with the joint portion 120 of the bottom plate 12, so that the housing 13 and the bottom plate 12 are relatively positioned on both sides of the panel 10.

[0046] The specific assembly process of the above-mentioned assembled panel assembly 1 is as follows.

[0047] Install the bottom plate 12 to the panel 10. The engaging portion 120 on the bottom plate 12 corresponds to and is inserted into the receiving hole 100 on the panel 10. The mating portion 124 on the bottom plate 12 corresponds to the mounting hole 102 on the panel 10, and the bump 124a on the mating portion 124 snaps into the notch 102a located at the edge of the mounting hole 102, thereby positioning the bottom plate 12 relative to the panel 10.

[0048] Engage the housing 13 to the engaging portion 120 by means of a threaded connection, so that the housing 13 is positioned in the annular gap 17 defined by the receiving hole 100 of the panel 10 and the engaging portion 120 of the bottom plate 12. The housing 13 abuts against the edge of the receiving hole 100 of the panel 10 in the circumferential direction. The housing 13 and the bottom plate 12 are respectively located on both sides of the panel 10 and are fixedly attached to the panel 10 relative to each other. A schematic diagram of the completed assembly of the housing 13, the panel 10, and the bottom plate 12 is as Figure 4 and Figure 9 shown.

[0049] Install the button cover 142 to the button body 140. The button cover 142 is engaged with the button body 140 by means of the axial second groove 142c of the base portion 142b cooperating with the axial second rib 140e on the side of the head 140a of the button body 140. Then, the screw rod of the fixing member 144 (such as a screw) passes through the fixing hole formed inside the button body 140 and engages with the base portion 142b of the button cover 142, and the screw head abuts against the boss, thereby fixing the button cover 142 to the button body 140.

[0050] Put the elastic member 15 (such as a helical spring) on the shaft rod portion 140b of the button body 140, and then snap the snap ring into the card slot on the shaft rod portion 140b. One end of the elastic member 15 abuts against the engaging portion 120 (i.e., the flange, especially the radially limiting portion defined by the flange) of the bottom plate 12, and the other end of the elastic member 15 abuts against the snap ring, so that the button group 14 is axially elastically positioned relative to the bottom plate 12. A schematic diagram of the completed assembly of the assembled panel assembly 1 is as Figure 10 shown, which also shows the states of the button group 14 in the closed position and the open position. Correspondingly, it is the closing and opening of the button valve core that controls the fluid conduction and cutoff.

[0051] The assembled panel assembly provided by the present invention uses an innovative structural design to enable the independent application of a flat panel in a wall-mounted shower faucet and the reasonable cooperation between the panel assemblies to optimize the function of the button group. The independent panel can meet the various surface treatments required in the later processes, overcomes many defects existing in the panel with buttons formed on the surface in the prior art, and the cooperation between the bottom plate and the housing ensures the firm positioning of the two to the panel, so that the panel assembly has been improved in terms of assembly and use.

[0052] Although the present invention has been described in detail with only a limited number of embodiments, it should be readily understood that the present invention is not limited to such disclosed embodiments. On the contrary, the present invention may be modified by incorporating any number of variations, alterations, substitutions or equivalent means not heretofore described, provided that such modifications are commensurate with the spirit and scope of the present invention. In addition, although various different embodiments of the present invention have been described, it is understood that aspects of the present invention may include only some of the embodiments. Accordingly, the present invention is not to be considered as limited by the foregoing description, but only by the appended claims.

Claims

1. An assembled panel component (1) for a wall-mounted shower faucet, characterized in that, Comprising: A panel (10), which is configured in a shell-like manner and has a main plane, and a receiving hole (100) is formed on the main plane; A bottom plate (12), which is located on one side of the panel (10) and has a corresponding engaging portion (120) that matches the receiving hole (100), and the engaging portion (120) is configured as a flange that defines an engaging hole (122); A housing (13), which is configured to accommodate a button group (14), wherein the button group (14) includes a button body (140), the button body (140) includes a head (140a) received in the housing (13) and a shaft portion (140b) that extends axially through the engaging hole (122) along the head (140a) and has a smaller diameter relative to the head (140a), the housing (13) is located on the other side of the panel (10) and is detachably engaged with the engaging portion (120) of the bottom plate (12) to be fixedly attached to the panel (10) relative to the bottom plate (12), the button group (14) is configured to axially move relative to the engaging hole (122) of the bottom plate (12) to drive a button valve core for conducting or cutting off fluid to open or close, the housing (13) is engaged with the engaging portion (120) of the bottom plate (12) and is received in an annular gap (17) defined by the engaging portion (120) of the bottom plate (12) that extends through the receiving hole (100) and the receiving hole (100), so as to position the housing (13) relative to the panel (10); The button body (140) is provided with a convex portion (140c) extending toward one side of the shaft on the periphery of its head (140a); The housing (13) includes: A connecting portion (130), which conforms to the annular gap (17); An outer ring member (132), which is located on the outer periphery of the connecting portion (130) and has a diameter larger than the receiving hole (100); An inner ring member (134), which is located on the inner periphery of the connecting portion (130) and is engaged with the engaging portion (120), and the outer ring member (132), the connecting portion (130) and the inner ring member (134) together define a recess (136); The recess (136) of the housing (13) is axially opposite to the convex portion (140c) of the button body (140) and guides the convex portion (140c) to axially move toward the recess (136).

2. The prefabricated panel assembly (1) according to claim 1, characterized in that, The button body (140) is received in the housing (13) and partially extends through the engaging hole (122) of the bottom plate (12) to be anti-rotationally engaged with the engaging portion (120), and the button body (140) is configured to be able to axially move along the engaging hole (122) and abut against the button valve core on the side of the bottom plate (12) away from the panel (10) to drive it to open or close.

3. The assembled panel assembly (1) according to claim 2, wherein, The assembled panel assembly (1) further includes: A limiting member (16) is clamped to the shaft portion (140b) on a side of the shaft portion (140b) away from the head (140a). An elastic member (15) is sleeved on the shaft portion (140b). One end of the elastic member (15) in the axial direction abuts against the head (140a), and the other end abuts against the limiting member (16), so that the button body (140) can elastically approach or move away from the bottom plate (12) in the axial direction to close or open the button valve core.

4. The prefabricated panel assembly (1) according to claim 3, characterized in that, The button group (14) further includes: A button cover (142) is non-rotatably joined to one side of the head (140a) of the button body (140). A fixing member (144) is joined to the button cover (142) to fix the button cover (142) to the button body (140).

5. The prefabricated panel assembly (1) according to claim 3, characterized in that, An installation hole (102) for assembling a temperature adjusting member is further provided on the main plane of the panel (10). The bottom plate (12) has a corresponding matching portion (124) matching the installation hole (102). The installation hole (102) and the matching portion (124) are positioned relative to each other through the cooperation of a notch (102a) and a protrusion (124a).

6. The prefabricated panel assembly (1) according to claim 1, wherein On a side of the bottom plate (12) facing the panel (10), ribs (128) are provided, and the ribs (128) are configured to be arranged to avoid the accommodation hole (100) on the panel (10).

7. The prefabricated panel assembly (1) according to claim 3, characterized in that, The joint portion (120) between the shaft portion (140b) of the button body (140) and the bottom plate (12) is non-rotatably joined to each other through the cooperation of a first groove (140d) and a first rib (120a).

8. The prefabricated panel assembly (1) according to claim 4, characterized in that, The shaft portion (140b) of the button body (140) and the button cover (142) are non-rotatably joined to each other through the cooperation of a second groove (142c) and a second rib (140e) on one side of the head (140a) of the button body (140).

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