Hook component and sofa backrest assembly

Abstract

This application provides a hook component ( 2, 4 ) that is mounted on a support component ( 1, 3 ) and integrally formed with the support component through a blow-molding process, and the hook component includes an end accommodating portion for accommodating an elastic support member ( 5 ). This application also provides a sofa backrest assembly, which includes a support component ( 1, 3 ) and a hook component ( 2, 4 ), wherein the hook component ( 2, 4 ) is mounted on the support component ( 1, 3 ) and integrally formed with the support component through a blow-molding process. This application enables the hook component and the support component to be blow-molded into an integrated part, thereby solving the problems of many parts, complex assembly processes, insecure connections, and unstable product quality caused by traditionally separated hooks, achieving a structure with reliable strength, reduced processes, and the number of parts, and conducive to large-scale production.

What is claimed is: 
     
         1 . A hook component, wherein that the hook component is mounted on a support component and is integrally formed with the support component through a blow-molded process, and the hook component includes an end accommodating portion for accommodating an elastic support member. 
     
     
         2 . The hook component according of  claim 1 , wherein that the accommodating portion is configured as an accommodating groove, and the accommodating groove includes:
 A retaining area for holding the end of the elastic support member in the assembled state; and   When assembling the elastic support member, a guiding area is provided to guide the end of the elastic support member into the retaining area, and   Wherein the gap width of the retaining area transversed in the direction of extension of the accommodating groove is greater than the corresponding gap width of the guiding area.   
     
     
         3 . The hook component according of  claim 2 , wherein that the support component includes a first and second side panel arranged oppositely and separated from each other, and each side panel of the first side panel and the second side panel respectively forms a stepped structure in the inward portion toward the central area of the support component, wherein the stepped structure includes:
 A first step surface is formed by a top surface of the corresponding side panel;   A second step surface extends parallel to and below the first step surface; and   And a third step surface extending from the first step surface to the second step surface.   
     
     
         4 . The hook component according of  claim 3 , wherein that the hook component includes:
 A first half portion extending toward the top side direction from the second step surface, and   A second half portion formed on the third step surface, wherein the second half portion is a portion extending inward toward the central area of the support component from the third step surface, or is the third step surface itself,   The first half portion and the second half portion are arranged oppositely and define the accommodating groove between them.   
     
     
         5 . The hook component according of  claim 4 , wherein that,
 The retaining area is formed by the bottom surface connected at the bottom of the first half portion and the second half portion, and   The guiding area is formed by the first surface of the first half portion extending away from the central area of the support component and the second surface of the second half portion facing the central area of the support component. Both the first surface and the second surface are arranged above the bottom surface and face each other.   
     
     
         6 . The hook component according of  claim 5 , wherein that the stopper portion is: protruding rib structures arranged continuously or discretely transverse to the direction of extension of the accommodating groove; or the stopper portion is configured as stepped surfaces; or the stopper portion is configured as protruding convex surfaces inwardly from the central portion of the first surface and/or the second surface. 
     
     
         7 . The hook component according of  claim 4 , wherein that the top surfaces of the first half portion and/or the second half portion extend coplanar with the top surfaces of the corresponding side plates. 
     
     
         8 . The hook component according of  claim 4 , wherein that the size of the bottom side portion of the first half portion near the second step surface is larger than the size of the top side portion far from the second step surface. 
     
     
         9 . The hook component according of  claim 5 , wherein that the guiding groove extends in the direction of extension parallel to the accommodating groove is provided in the retaining area, wherein the guiding groove is used to guide the end of the elastic support member to be inserted into the accommodating groove through an opening formed on one side and/or both sides of the retaining area. 
     
     
         10 . The hook component according of  claim 3 , wherein that the recessed area for positioning the hook component is formed on the stepped structure, making it easier to locate the positions of each hook component during the assembly process. 
     
     
         11 . The hook component according of  claim 2 , wherein that the support component includes a first side panel and a second side panel arranged oppositely and separated from each other, and each side panel of the first side panel and the second side panel respectively includes a first rib panel, a second rib panel, and a third rib panel arranged sequentially from top to bottom. 
     
     
         12 . The hook component according of  claim 11 , wherein that the hook component includes a first half portion and a second half portion,
 wherein the first half portion includes a first portion located between the second rib panel and the third rib panel, extending beyond the inner side edge of the respective rib panels in a direction intersecting the rib panels and toward the central area of the support component, and a second portion extending beyond the height of the second rib plate from the first portion toward the top side direction; and   wherein the second half portion includes a first portion extending substantially parallel to the rib panels and beyond the inner side edge of the respective rib panels below the second rib panel, and a second portion extending vertically upward beyond the height of the second rib panel from the first portion toward the top side direction,   Wherein the second portion of the first half portion is arranged opposite to the second portion of the second half portion, thereby defining the accommodating groove between the two half portions.   
     
     
         13 . The hook component according of  claim 12 , wherein that,
 The second portion of the first half portion includes two opposite side walls extending vertically toward the top side direction, and a transverse wall extending transversely to the side walls between the two side walls; and   Wherein the second portion of the second half portion includes two opposite side walls extending vertically toward the top side direction and a protruding portion extending parallel to the side walls between the two side walls, and   Wherein the distance between the two side walls of the first half portion is less than the distance between the two side walls of the second half portion.   
     
     
         14 . The hook component according of  claim 13 , wherein that,
 The second portion of the first half portion and the second portion of the second half portion facing the other half portion on the bottom side form shapes that can mate with the ends of the elastic support member, thereby collectively defining the retaining area and   Wherein the second portion of the first half portion and the second portion of the second half portion face the other half portion on the top side from the guiding area.   
     
     
         15 . The hook component according of  claim 14 , wherein that the retaining area is defined by inwardly concave arcuate surfaces set on the first and second half portion, which are constructed to mate with the ends of the elastic support member. 
     
     
         16 . The hook component according of  claim 13 , wherein that the protruding portion of the second half portion extends in the top-side direction with a height lower than that of the two side walls of the second half portion, and has a thickness more significant than that of the two side walls. 
     
     
         17 . The hook component according to  claim 1 , wherein in that the metal parts are embedded in the hook component, and the metal parts are sheet-like components matching the shape of the hook component. 
     
     
         18 . The hook component according of  claim 2 , wherein that the elastic support member is a spring, and the end of the spring includes:
 Connecting segment, wherein the connecting segment in the assembled state is retained in the retaining area of the accommodating groove, and extends parallel to the direction of extension of the accommodating groove; and   Stopper segment, wherein the stopper segment is connected to the connecting segment and is positioned closer to the end of the spring relative to the connecting segment, wherein the stopper segment extends horizontally transverse to the direction of extension of the accommodating groove in the assembled state, serving to at least partially prevent the spring from disengaging from the accommodating groove.   
     
     
         19 . The hook component according to  claim 1 , wherein that the support component is a sofa backrest assembly, cushion assembly, seat frame assembly, or armrest assembly. 
     
     
         20 . A sofa backrest assembly, wherein that the backrest assembly includes a support component and a hook component according to  claim 1 , wherein the hook component is mounted on the support component and integrally formed with the support component through a blow-molded process.