Prefabricated mounting assembly

Abstract

The present invention discloses a prefabricated mounting assembly comprising: a mounting bracket comprising a top surface having a first fastening hole, a pair of side members extending downwardly from opposite ends of the top surface, and a plurality of ribs disposed between the side members; the reinforcing assembly is arranged between the top surface of the mounting bracket and the rib-shaped pieces in the plurality of rib-shaped pieces and comprises a first fastening piece, the first fastening piece is jointed in a second fastening hole, and the second fastening hole is formed in a main body of the reinforcing assembly.

Description

Technical Field

[0001] This disclosure relates to a prefabricated installation component. Background Technology

[0002] Embodiments of this disclosure relate to a prefabricated mounting assembly for installing a vehicle seat, such as a mounting member mounted on a support to engage and support an assembly object.

[0003] As an example, such as Figure 1 As shown, the vehicle's seat S is mounted on the seat beam C mounted on the plate P using a seat mounting bracket 10.

[0004] Reference Figure 2 Seat mounting brackets 10 used for mounting seats are typically made of extruded aluminum to increase structural rigidity and reduce weight. While extruded aluminum has an internal rib structure 11 that provides excellent structural rigidity, the closed-end nature of the extruded material makes it difficult to apply high-strength nuts 20 or bolt hardware internally. For example, to apply press-fit nuts to aluminum extrusions, an assembly device is required to insert the nut and tighten it into the gap of the substrate, and the more complex the shape of the internal ribs in the extruded material, the more difficult it is to insert the assembly device into the extruded material.

[0005] Therefore, through holes 12 are typically required in the opposing surfaces of the assembled surfaces to allow for, Figure 3 As shown, the feeder F can pass through the through-hole 12. However, this requires additional machining to remove the internal ribs and opposing surfaces of the extruded material, which has the major disadvantages of reducing the stiffness of the part and increasing machining costs.

[0006] In addition, the main structure of the seat installation needs to be highly reinforced to ensure the anchoring strength of the seat belt. Figure 1 The arrow in the image indicates the direction of loading during the seatbelt anchorage test.

[0007] In seatbelt anchoring tests, the law requires applying a high load (typically 20 times the weight of the seat) to the front of the vehicle without failure. Therefore, applying extruded aluminum material with optimized internal rib geometry to the seat mount bracket 10, which protrudes from the seat crossbeam C, the main component, is efficient. Paradoxically, the tighter the internal ribs 11, the higher the rigidity and strength of the bracket, while the more unfavorable the conditions for applying hardware (e.g., nuts 20) to the mounting surface. Applying nuts 20 in addition to the aforementioned machined through-holes 12 could potentially eliminate the ribs, resulting in reduced rigidity and strength.

[0008] On the other hand, refer to Figure 4To ensure the installation strength of the seat mounting bracket 31, a reinforcing assembly 32 with separate hardware, primarily applied to the inner side of the mounting surface, can be welded as a leaf plate to the seat mounting bracket. While this reinforcing assembly 32 is easy to install when applied to open ends, it is less suitable for applications such as... Figure 2 and Figure 3 When using extruded material with closed ends, loading is very difficult due to its shape, which rotates 90 degrees relative to the mounting surface. In this case, the mounting surface needs to be flipped downwards, and separate positioning clamps, holes, etc., are required, which complicates the assembly process, and depending on the shape of the internal ribs of the extruded material, it may be impossible to assemble the reinforcing assembly 32.

[0009] Furthermore, the inefficiency of applying mounting hardware (e.g., nut 20) directly or via welding reinforcement assembly 32 to the interior of the extruded material is that if the hardware is damaged during seat installation (e.g., due to thread damage during tightening), the entire extruded material must be replaced.

[0010] like Figure 1 As shown, the seat mounting bracket 10 is mechanically connected to the seat beam C, which is the main frame component, through MIG welding and FDS bonding. Therefore, if the entire seat mounting extrusion material needs to be replaced, there is a serious problem of damage to the entire vehicle frame component.

[0011] In addition, such as Figure 5 As illustrated, depending on the vehicle's layout characteristics, the greater the protrusion (height of the seat mounting bracket) of the seat mounting bracket 10, the greater the cumulative body assembly tolerance and form tolerance of the seat mounting bracket 10. Therefore, separate precision fixture equipment is required to reduce the tolerance and ensure the increased cost of assembling the seat to the body.

[0012] The foregoing background description is intended to provide an understanding of the context of embodiments of this disclosure and may include matters that are not known prior art. Summary of the Invention

[0013] Embodiments of this disclosure provide a prefabricated mounting assembly having a structure that facilitates assembly using a reinforcing assembly with nuts applied inside a mounting bracket made of extruded aluminum material.

[0014] Embodiments of this disclosure provide a prefabricated mounting assembly comprising: a mounting bracket having a top surface and side members, the top surface having fastening holes, the side members extending downward from two horizontal ends of the top surface, and a plurality of ribs formed between the side members; and a reinforcing assembly inserted between the top surface of the mounting bracket and one of the plurality of ribs, fasteners engaging in fastening holes formed in the body of the reinforcing assembly.

[0015] Multiple ribs may include: a pair of uppermost protruding ribs, each spaced apart from the lower surface of the top surface and protruding inward from the side member, and a reinforcing assembly that can be inserted between the top surface of the mounting bracket and the uppermost protruding ribs.

[0016] The reinforcement components are removable from the mounting bracket.

[0017] The reinforcement components can be movably inserted into the mounting bracket.

[0018] At least one of the multiple ribs can divide the internal space of the mounting bracket into an upper space and a lower space.

[0019] The mounting bracket can be provided with inwardly recessed stop grooves at both longitudinal ends.

[0020] The reinforcement component can be inserted into the mounting bracket through the longitudinal transverse end of the mounting bracket, and the reinforcement component can be provided with an upwardly protruding anti-disengagement protrusion on the front end in the insertion direction.

[0021] The anti-detachment protrusion can be bent upwards, elastically deformed, and placed in the stop groove.

[0022] The reinforcing component may have a longitudinal limiting protrusion that protrudes outward from the side member relative to the insertion direction, and a gap may be formed between the longitudinal limiting protrusion of the reinforcing component inserted into the mounting bracket and the inner surface of the mounting bracket.

[0023] The reinforcement component may have vertical limiting flanges that project downward at the front and rear ends of the side relative to the insertion direction, and a gap may be formed between the vertical limiting flanges of the reinforcement component assembled into the mounting bracket and the uppermost protruding rib.

[0024] The reinforcing component may have an upwardly projecting anti-disengagement step at the rear end relative to the insertion direction. The anti-disengagement step is stopped by a stop groove, and gaps may be formed between the anti-disengagement protrusion and the stop groove, as well as between the anti-disengagement step and the stop groove.

[0025] Mounting brackets and reinforcement components can be engaged with each other by another fastener, which in turn secures the fastener.

[0026] The reinforcement component can be inserted into the mounting bracket through the longitudinal transverse end of the mounting bracket. The reinforcement component can be provided with an upwardly protruding anti-disengagement protrusion and a downwardly protruding anti-disengagement step on the front and rear ends in the insertion direction, respectively. The anti-disengagement protrusion and the anti-disengagement step are stopped by the protruding rib, and gaps can be formed between the anti-disengagement protrusion and the stop groove, and between the anti-disengagement step and the stop groove.

[0027] According to the embodiments of the present disclosure, the prefabricated mounting assembly with nuts can be easily assembled into or replaced from a mounting bracket made of extruded aluminum material, and no separate drilling or other treatment is required to remove the joint during assembly or replacement.

[0028] In addition, a 2mm tolerance in the X / Y / Z directions is ensured to allow for the absorption of installation position deviations between the assembled object and the vehicle body due to assembly errors.

[0029] Therefore, despite its ease of assembly, the rigidity of the mounting components can be maintained without compromising the rigidity of the ribs.

[0030] Furthermore, no through-hole machining is required, which is advantageous in terms of weight and price. Attached Figure Description

[0031] Figure 1 The vehicle seats are shown mounted on the panel;

[0032] Figure 2 and Figure 3 This illustrates a traditional seat mounting structure;

[0033] Figure 4 This illustrates another conventional seat mounting structure;

[0034] Figure 5 This illustrates the assembly tolerances in a conventional seat mounting structure;

[0035] Figure 6 and Figure 7 The construction of a prefabricated assembly according to an embodiment of the present disclosure is shown;

[0036] Figure 8 Show Figure 7 Side view of the reinforced components;

[0037] Figure 9 The assembly state of the prefabricated installation components according to embodiments of the present disclosure is shown;

[0038] Figure 10 As shown Figure 9 The degrees of freedom and range of motion of the assembly state shown;

[0039] Figure 11 As shown Figure 9 A portion of the transverse side of the assembled prefabricated mounting assembly shown;

[0040] Figure 12 As shown Figure 9 A portion of the top side of the assembled prefabricated mounting assembly shown;

[0041] Figures 13 to 18The assembly and replacement process of prefabricated installation components according to embodiments of the present disclosure is illustrated in sequence; and

[0042] Figure 19 and Figure 20 A prefabricated assembly according to another embodiment of the present disclosure is shown. Detailed Implementation

[0043] The above-described objects, features, and advantages will be described in further detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains will be able to readily practice the technical ideas of this disclosure.

[0044] In describing embodiments of this disclosure, detailed descriptions will be shortened or omitted where it is determined that a detailed description of known techniques related to this disclosure would unnecessarily obscure the essential points of this disclosure.

[0045] Figure 6 and Figure 7 The diagram illustrates the construction of a prefabricated assembly according to an embodiment of the present disclosure. Figure 8 Show Figure 7 A side view of the floating reinforcement component, and Figure 9 The assembly state of the prefabricated installation components according to an embodiment of the present disclosure is shown.

[0046] In the following text, reference will be made to Figures 6 to 9 A prefabricated installation component is described according to an embodiment of the present disclosure.

[0047] The prefabricated mounting components of embodiments of this disclosure can be applied to mounting structures, and for example, can be mounting components for mounting vehicle seats, which require high-strength hardware within the extruded material. For example, the mounting component for mounting a seat is mounted on a vehicle seat crossbeam C, such that it engages with the seat S at the top, allowing the seat S to be mounted on the vehicle body in a spaced-apart manner from the vehicle body.

[0048] The prefabricated installation components include mounting bracket 100 and reinforcement components 200.

[0049] In embodiments of the present invention, the reinforcement component 200 is combined with the mounting bracket 100, forming a gap that allows the reinforcement component 200 to float. Considering this characteristic, the reinforcement component 200 can be referred to as a floating reinforcement component.

[0050] Mounting bracket 100 may be made of an extruded material such as A1, and may have a top surface 101 and horizontal lateral members 103, wherein fastening holes 102 are formed in the top surface 101 to engage the seat S (see Figure 1 On the lower side of the top surface 101, side members 103 extend downward from the two horizontal ends of the top surface 101. As shown, the two side members 103 may be inclined to be separated from each other in the downward direction to engage the seat crossbeam C (see Figure 1 )wait.

[0051] In addition, the mounting bracket 100 may have ribs 104 of various shapes formed between the two side members 103 and between the ribs 104 to ensure the rigidity of the seat mounting bracket 100.

[0052] Furthermore, at least one of the ribs is connected between the two side members 103, such that the mounting bracket 100 is constructed with a closed end, dividing the internal space of the mounting bracket 100 into an upper space and a lower space. In other words, the mounting bracket 100 of the embodiments of this disclosure does not require a through hole connected from the bottom to the fastening hole 102 as in the conventional manner.

[0053] On the other hand, the rib 104 has a pair of uppermost protruding ribs 110 that protrude in a manner spaced apart from the lower surface of the top surface 101.

[0054] Therefore, the protruding ribs 110 protrude inward from the two side members 103 and are spaced apart from each other, so that the floating reinforcement assembly 200 described later can be... Figure 9 The insertion is shown through the space between the top surface 101 and the protruding rib 110.

[0055] Furthermore, at two longitudinal ends, which are different from the two horizontal ends, the top surface 101 is provided with an inwardly recessed stop groove 120 to facilitate engagement and disengagement with the floating reinforcement assembly 200 described later, and the side member 103 extends from the two horizontal ends.

[0056] Next, the floating reinforcement assembly 200 includes: a reinforcement element 210, inserted into and coupled to the space between the top surface 101 of the mounting bracket 100 and the protruding rib 110; and a fastener, such as a nut 220, coupled to the reinforcement element 210. The nut 220 may be a press-fit nut, a riveted nut, or a weld nut.

[0057] Reference Figures 10 to 12 The reinforcing element 210 has: a fastening hole 212 formed in the body 211; and a main flange 213 formed around the fastening hole 212.

[0058] Therefore, the nut 220 is installed in the fastening hole 212 corresponding to the fastening hole 102 of the mounting bracket 100 on the inner side of the main flange 213.

[0059] The reinforcing element 210 has an anti-detachment protrusion 216 and an anti-detachment step 217 at its front end and rear end in the direction in which the reinforcing assembly 200 is inserted into the mounting bracket 100, respectively.

[0060] In addition, the reinforcing element 210 has longitudinal limiting protrusions 214 on both side parts.

[0061] The floating reinforcement component 200 is inserted into the mounting bracket 100 and is assembled and positioned by interference fit between components without separate mechanical connections such as welding or riveting.

[0062] The longitudinal limiting protrusion 214 is formed to protrude outward from each of the two side components.

[0063] Furthermore, the reinforcing element 210 is provided with vertical limiting flanges 215 on the front and rear sides to limit the vertical position of the reinforcing element 210 during assembly.

[0064] An anti-detachment protrusion 216 is formed at the front end of the body 211 to flexibly protrude upward, such that the protrusion is configured to elastically deform upon insertion and recover in the stop groove 120 after insertion.

[0065] Additionally, an anti-detachment step 217 is formed at the rear end of the body 211 to protrude upward, such that the step is configured to prevent the reinforcing element 210 from detaching by engaging in the stop groove 120 after insertion.

[0066] This reinforcing element 210 can be pressed into shape.

[0067] In this way, the floating reinforcement component 200 is inserted into the inside of the mounting bracket 100, so that its position is restricted by the interference fit between the components without the need for separate mechanical connections such as welding or riveting.

[0068] Therefore, the position in the longitudinal direction (X) is adjusted within a 2mm flowable gap between the longitudinal limiting protrusion 214 and the internal shape of the mounting bracket 100; the position in the vertical direction (Z) is adjusted within a 2mm flowable gap between the vertical limiting flange 215 and the internal shape of the extruded material; and the position in the insertion direction (Y) is adjusted within a 2mm flowable gap between the anti-detachment protrusion 216 / anti-detachment step 217 and the stop groove 120 in the extruded material. Thus, the floating reinforcement assembly 200 is inserted into the extruded material and does not shift, but rather "suspends" in the X / Y / Z directions with a 2mm flowable gap.

[0069] Therefore, when another fastener, such as a bolt, engages with the fastener during seat installation, the floating reinforcement assembly 200 automatically positions and adjusts itself by rotating along the X / Y / Z axes.

[0070] Due to this structural feature, the structure is easy to assemble when bolted together, and there are no assembly errors between the parts.

[0071] In the following text, reference will be made to Figures 13 to 18 The assembly and replacement process of prefabricated installation components according to embodiments of the present disclosure is described.

[0072] The mounting bracket 100, made by aluminum extrusion, has protruding ribs (tracks) 110 for insertion into the floating reinforcement assembly 200. The insertion direction of the floating reinforcement assembly 200 is the same as the extrusion direction of the extruded material, and this structure serves as a guide rail during the assembly of the floating reinforcement assembly 200.

[0073] Therefore, as Figure 13 As shown, insertion of the floating reinforcement component 200 begins by aligning the floating reinforcement component 200 with the protruding rib 110 of the mounting bracket 100.

[0074] Once inserted into the track, the limiting in the insertion direction is adjusted by the anti-disengagement protrusion 216 and the anti-disengagement step 217 of the floating reinforcement assembly 200. Furthermore, the limiting in the longitudinal direction is adjusted by the longitudinal limiting protrusion 214, which has a 2mm gap from the extruded material and thus serves to partially adjust the deflection in the insertion direction. When the floating reinforcement assembly 200 begins to be inserted, because the vertical limiting flange 215 is positioned within the protruding rib 110, the anti-disengagement protrusion 216 elastically deforms approximately 1mm in the downward direction.

[0075] Therefore, when the floating reinforcement component 200 is inserted along the track under frictional conditions, as Figure 14 As shown, the anti-detachment protrusion 216 is inserted with a 2mm elastic deformation, and the main flange 213 is positioned.

[0076] Then, as Figure 15 As shown, due to the longitudinal limiting protrusion 214, the reinforcing component 200 moves along the protruding rib 110 with a gap of 2 mm in the longitudinal direction (X).

[0077] like Figure 16 As shown, at the point where the reinforcing assembly 200 is inserted after being inserted along the track, the anti-disengagement protrusion 216 reaches the machined surface of the stop groove 120 of the extruded material and elastically recovers. The frictional force caused by surface compression that occurs during the track insertion process is eliminated, and the elastic recovery shape of the anti-disengagement protrusion 216 and the anti-disengagement step 217 placed in the stop groove 120 adjusts the Y-direction position of the floating reinforcing assembly 200.

[0078] like Figure 17 As shown, the replacement of the floating reinforcement component 200 inserted in this manner is achieved by pressing the anti-disengagement protrusion 216 and pushing the floating reinforcement component 200 in the Y direction.

[0079] like Figure 18As shown, the floating reinforcement component 200 can then be removed by pulling the anti-detachment step 217.

[0080] The prefabricated mounting assembly of the embodiments of this disclosure has an assembly structure that is easy to remove and replace as described above. In other words, if hardware damage occurs, the floating reinforcement assembly 200 can be easily removed and replaced with a new part without damaging the extruded material and without drilling to remove individual joints.

[0081] In addition, ensure that the 2mm flow gap in the X / Y / Z directions can absorb the installation tolerance between the assembled object and the vehicle body due to assembly errors.

[0082] Furthermore, when high-strength hardware is required inside extruded materials with complex shapes and closed ends, high-strength hardware with thick reinforcing plates can be used without removing the internal ribs of the extruded material, and through holes are not required, thereby reducing costs and eliminating concerns about the reduction in stiffness / strength due to the machining of through holes.

[0083] Preferably, the prefabricated mounting assembly of the above-described embodiments of the present disclosure has a stop groove 120 formed in the mounting bracket, such that the floating reinforcement assembly 200 has an anti-detachment protrusion 216 and an anti-detachment step 217 disposed in the stop groove 120.

[0084] However, embodiments of this disclosure are also applicable to mounting brackets where the stop groove 120 is not formed, and Figure 19 and Figure 20 This modified embodiment is shown.

[0085] When describing the modified embodiments, the same constructions as in the previous embodiments will be omitted.

[0086] According to the modified embodiment, the prefabricated installation assembly includes a seat mounting bracket 300 and a floating reinforcement assembly 400.

[0087] Ribs 301 are formed on the mounting bracket 300, and the uppermost rib of the ribs 301 is formed as a protruding rib 310 spaced apart from the lower surface of the top surface of the mounting bracket.

[0088] The protruding ribs 310 are formed as a pair, protruding inward from the side member in a spaced-apart manner, and serve as guide rails for the insertion of the floating reinforcement assembly 400.

[0089] On the other hand, unlike the previous embodiment, the two horizontal ends of the top surface are not provided with inwardly recessed stop grooves.

[0090] The floating reinforcement assembly 400 includes a reinforcement element 410 and a fastener such as a nut 420, which is fastened to the reinforcement element 410.

[0091] The reinforcing element 410 has: a fastening hole formed in the body 411; and a main flange formed around the fastening hole.

[0092] The reinforcing element 410 has an anti-detachment protrusion 416 and an anti-detachment step 417 respectively on the front end and rear end of the main body 411 in the direction relative to the reinforcing component 400 being inserted into the seat mounting bracket 300.

[0093] In addition, the reinforcing element 410 may have longitudinal limiting protrusions 414 on two horizontal transverse surfaces, and the reinforcing element 410 may also have vertical limiting flanges.

[0094] Furthermore, since the anti-detachment step 417 may not be positioned in the stop groove as in the previous embodiment, the anti-detachment step 417 is formed to protrude downward from the rear end of the longitudinal transverse portion, and after being inserted, the anti-detachment step 417 is engaged in the protruding rib 310 to limit the position in the longitudinal direction.

[0095] The mounting components of the embodiments described above can also be applied to detachable mounting vehicle body structures that require high-strength hardware within extruded materials, such as high-voltage battery mounting and subframe mounting.

[0096] While the foregoing disclosure has been described with reference to the illustrative drawings, it will be apparent to those skilled in the art that this disclosure is not limited to the described embodiments and that various modifications and variations can be made without departing from the spirit and scope of this disclosure. Therefore, such modifications or variations should be considered to fall within the scope of the claims of this disclosure, and the scope of this disclosure should be interpreted based on the appended claims.

Claims

1. A prefabricated installation component, comprising: Mounting brackets, including: Top surface, including the first fastening hole; A pair of side members extending downward from opposite ends of the top surface; and Multiple rib-like members are disposed between the side components; and A reinforcement component is disposed between the top surface of the mounting bracket and one of the plurality of ribs, and includes a first fastener that engages in a second fastening hole disposed in the body of the reinforcement component.

2. The prefabricated installation component according to claim 1, wherein, The plurality of ribs includes a pair of uppermost protruding ribs, each of the pair of uppermost protruding ribs being spaced apart from the lower surface of the top surface and protruding inwardly from the pair of side members; and The reinforcement component is disposed between the top surface of the mounting bracket and the pair of uppermost protruding ribs.

3. The prefabricated installation component according to claim 2, wherein, The reinforcement component is detachable from the mounting bracket.

4. The prefabricated installation component according to claim 2, wherein, The reinforcement component is movably inserted into the mounting bracket.

5. The prefabricated installation component according to claim 2, wherein, The ribs among the plurality of ribs divide the internal space of the mounting bracket into an upper space and a lower space.

6. The prefabricated installation component according to claim 2, wherein, The mounting bracket and the reinforcement assembly are engaged with each other by a second fastener, which secures the first fastener.

7. The prefabricated installation component according to claim 2, wherein, The reinforcement component is inserted into the mounting bracket from a first side of the opposite side of the top surface of the mounting bracket.

8. The prefabricated installation component according to claim 7, wherein, The reinforcing component has an upwardly protruding anti-disengagement protrusion and a downwardly protruding anti-disengagement step on its front and rear ends in the insertion direction of the reinforcing component, respectively.

9. The prefabricated installation component according to claim 8, wherein, The anti-detachment protrusion and the anti-detachment step are stopped by the pair of uppermost protruding ribs.

10. A prefabricated installation assembly, comprising: Mounting brackets, including: Top surface, including the first fastening hole; An inwardly recessed stop groove is provided on the opposite side of the top surface; A pair of side members extending downward from opposite ends of the top surface; and A plurality of ribs are disposed between the side members, the plurality of ribs including a pair of uppermost protruding ribs, each of the pair of uppermost protruding ribs being spaced apart from the lower surface of the top surface and protruding inwardly from the pair of side members; and A reinforcement assembly is disposed between the top surface of the mounting bracket and the pair of uppermost protruding ribs, the reinforcement assembly including a first fastener that engages in a second fastening hole disposed in the body of the reinforcement assembly.

11. The prefabricated installation assembly according to claim 10, wherein, The reinforcement component is inserted into the mounting bracket from the first side of the opposite sides; and An anti-detachment protrusion is provided at the front end of the reinforcement component in the insertion direction of the reinforcement component, and the anti-detachment protrusion protrudes upward.

12. The prefabricated installation assembly according to claim 11, wherein, The anti-detachment protrusion protrudes upward in a curved manner.

13. The prefabricated installation assembly according to claim 12, wherein, The bending manner of the anti-detachment protrusion is configured such that the anti-detachment protrusion elastically deforms and is placed in the stop groove provided on the second side of the mounting bracket.

14. The prefabricated installation assembly according to claim 11, wherein, The reinforcing component further includes a longitudinal limiting protrusion that protrudes outward from the opposite side component relative to the insertion direction.

15. The prefabricated installation assembly according to claim 14, wherein, Each of the longitudinal limiting protrusions of the reinforcing component inserted into the mounting bracket defines a gap between itself and the inner surface of the mounting bracket.

16. The prefabricated installation assembly according to claim 11, wherein, The reinforcing component includes a vertical limiting flange that protrudes downward at the front and rear ends of the side of the reinforcing component relative to the insertion direction.

17. The prefabricated installation assembly according to claim 16, wherein, A gap is defined between the vertical limiting flange of the reinforcing component inserted into the mounting bracket and the uppermost protruding rib.

18. The prefabricated installation assembly according to claim 11, wherein, An anti-disengagement step is provided at the rear end of the reinforcing component relative to the insertion direction. The anti-disengagement step protrudes upward and is stopped by the stop groove provided on the first side of the mounting bracket.

19. The prefabricated installation assembly according to claim 18, wherein, A gap is defined between the anti-detachment protrusion and the stop groove provided on the second side of the mounting bracket, and between the anti-detachment step and the stop groove provided on the first side of the mounting bracket.

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