Hook component and sofa backrest assembly

Abstract

The present application provides a hook component (2, 4) that is provided on a support component (1, 3) and is integrally formed as a whole with said support component by means of a blow molding process, the hook member comprising an end receptacle for receiving an elastic support member (5). The present application further provides a sofa backrest assembly comprising the support component (1, 3) and the hook component (2, 4), wherein the hook component (2, 4) is arranged on the support component (1, 3) and is integrally formed as a whole with said support component by means of a blow molding process. In the present application, the hook component and the support component are integrally blow molded as a whole, thereby solving the problems with traditional modular-type hooks such as the large number of parts and complex assembly processes involved, unstable connections, and unreliable quality of the finished product. The present invention is thus reliably strong, allows for a reduction in the number of production steps and parts, and has a structure conducive to large-scale production.

Description

Hook components and sofa backrest components Technical Field

[0001] The present application relates to a connection assembly, in particular to a hook component and a backrest assembly of a sofa having the hook component. Background Art

[0002] Many furniture devices (such as sofa backrests, sofa seat frames, and bed frames) require hook components to connect different parts of the device. For example, in sofa backrests, some backrest bodies are constructed as frame structures. Springs and other components are often placed between the opposing frame edges to increase the backrest's elasticity and enhance user comfort. Therefore, hook components are installed on the corresponding frame edges to connect the springs.

[0003] Conventional technology usually manufactures different parts separately and then assembles them. For example, regarding hooks and frame structures, the traditional approach is to manufacture the frame structure separately and then manufacture multiple hooks separately. When assembly or use is required, the hooks are fixed to the frame structure by gluing, nailing, or strapping for spring connection. However, this split manufacturing method has many shortcomings: (1) the number of parts in the production process is large, which is inconvenient for inventory management; (2) a separate manual assembly process is required for workers to manually install the hooks on the frame structure, which not only consumes manpower and material resources, but also relies too much on operating technology, resulting in unstable products, low yield rate, and unsuitable for large-scale and standardized production; and (3) the various installation methods of installing independent hooks on independent frame structures in the existing technology are mostly suitable for traditional wooden or metal frames. When these installation methods are applied to blow-molded frames, they will cause problems such as inconvenient operation, poor installation strength, and easy falling off.

[0004] Therefore, it is necessary to provide a hook component to at least solve the above problems.

[0005] Summary of the Invention

[0006] The purpose of this application is to provide a hook component to address the above problems existing in the prior art, so as to at least partially solve the problems caused by traditional split hooks, such as the large number of parts, complicated assembly procedures, loose connections, and unstable finished product quality.

[0007] In one aspect, the present application provides a hook component, which is disposed on a support component and integrally formed with the support component through a blow molding process, and includes a receiving portion for receiving an end portion of an elastic support member.

[0008] The hook structure of the present application is integrally formed with the corresponding supporting component, thereby reducing the number of parts, simplifying the process, and improving the structural strength.

[0009] In a preferred embodiment of the present application, the accommodating portion is constructed as an accommodating groove, which includes: a retaining area for retaining the end of the elastic support member in an assembled state; and a guiding area for guiding the end of the elastic support member into the retaining area when assembling the elastic support member, and wherein the gap width of the accommodating area transverse to the extension direction of the accommodating groove is greater than the corresponding gap width of the guiding area.

[0010] According to this embodiment, when the end of the elastic support member is assembled in the accommodating groove, it is not easy to shift upward from the retaining area through the guide area and then disengage from the accommodating groove. This structure ensures the assembly reliability between the hook component and the end of the elastic support member.

[0011] In a preferred embodiment of the present application, the supporting component includes a first side panel and a second side panel that are separated and arranged opposite to each other, and each of the first side panel and the second side panel is respectively formed with a step-like structure on the inner portion toward the central area of ​​the supporting component, wherein the step-like structure includes: a first step surface formed by the top surface of the corresponding side panel; a second step surface lower than the first step surface and extending parallel to the first step surface; and a third step surface extending from the first step surface to the second step surface.

[0012] In a preferred embodiment of the present application, the hook includes a first half extending from the second step surface toward the top side, and a second half extending from the third step surface in a direction toward the central area of ​​the support component, wherein the first half and the second half are arranged opposite to each other and define a receiving groove therebetween.

[0013] In a preferred embodiment of the present application, the holding area is formed by the interconnected bottom surfaces of the first half and the second half, and the guide area is formed by the first surface of the first half facing away from the central area of ​​the support part and the second surface of the second half facing the central area of ​​the support part, and the first surface and the second surface are arranged facing each other.

[0014] In a preferred embodiment of the present application, a stopper is formed on the first surface and / or the second surface.

[0015] According to this embodiment, the end portion of the elastic supporting member accommodated in the holding area can be further prevented from moving upward and out of the accommodation groove during transportation or use.

[0016] In a preferred embodiment of the present application, the stop portion is a continuously or discretely extending rib structure arranged transversely to the extension direction of the accommodating groove; or the stop portion is configured as a stepped surface.

[0017] According to this embodiment, those skilled in the art can select a suitable stopper structure as needed.

[0018] In a preferred embodiment of the present application, the top surface of the first half and / or the second half extends coplanar with the top surface of the corresponding side panel.

[0019] In a preferred embodiment of the present application, a size of a bottom portion of the first half portion close to the second step surface is larger than a size of a top portion away from the second step surface.

[0020] According to this embodiment, the structure of the hook component is more stable, so that it is not easy to break when subjected to the tensile force of an elastic support member such as a spring.

[0021] In a preferred embodiment of the present application, a guide groove extending parallel to the extension direction of the accommodating groove is provided in the retaining area, and the guide groove is used to guide the end of the elastic support member to be inserted into the accommodating groove from an opening formed in one side and / or both sides of the retaining area.

[0022] According to this embodiment, the elastic support member can be conveniently inserted into the groove in a variety of ways, that is, it can not only enter the retaining area at the bottom from the top guide area of ​​the accommodating groove, but can also be directly inserted into it at the side opening of the retaining area, so that during the assembly process, the staff can select appropriate assembly operations as needed.

[0023] In a preferred embodiment of the present application, a recessed area for positioning the hook component is formed on the surface of the second step.

[0024] According to this embodiment, the hook component can be positioned and assembled more quickly and conveniently during the assembly process.

[0025] In a preferred embodiment of the present application, the supporting component includes a first side panel and a second side panel that are separated and arranged opposite to each other, and each 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 in sequence from top to bottom.

[0026] In a preferred embodiment of the present application, the hook component includes: a first half extending from the third rib toward the top side; and a second half connected between the first rib and the second rib, transverse to the rib and extending toward the central area of ​​the support component, wherein the first half and the second half are arranged opposite to each other and define a receiving groove therebetween.

[0027] In a preferred embodiment of the present application, the first half includes two side walls extending from the third rib toward the top side, and a transverse wall extending transversely to the side walls between the two side walls; and wherein the second half includes two side walls extending transversely to the rib and toward the central area of ​​the support component, and a protrusion located between the two side walls and extending from the extension area of ​​the second rib toward the top side, and wherein the distance between the two side walls of the first half is smaller than the distance between the two side walls of the second half.

[0028] According to this embodiment, the side walls and protrusions of the first and second halves are staggered in the direction of the receiving groove. This allows the side walls and protrusions to uniformly apply force at different locations along the joint section when the end of the elastic support member is inserted, thereby retaining it in the retaining area. This staggered arrangement not only saves material but also ensures joint strength and increases the overall strength of the structure.

[0029] In a preferred embodiment of the present application, the two side walls and the transverse wall of the first half and the two side walls and the bottom side portion of the protrusion of the second half facing the other half are formed with a shape that can cooperate with the end of the elastic support member to jointly define a retaining area, and wherein the top side portions of the first half and the second half facing the other half are formed with a guide area.

[0030] In a preferred embodiment of the present application, the holding area is defined by corresponding curved surfaces on the first half and the second half.

[0031] In a preferred embodiment of the present application, the height of the protrusion of the second half extending in the top direction is lower than the two side walls of the second half, and the thickness along the extending direction of the accommodating groove is greater than the two side walls.

[0032] According to this embodiment, the protrusion itself is not easily broken, so that the engagement between the hook component and the spring is more secure. It can also serve as a reinforcement structure to strengthen the overall structure of the second half.

[0033] In a preferred embodiment of the present application, a metal piece is pre-embedded in the hook component, and the metal piece is a sheet-shaped component that matches the shape of the hook component.

[0034] According to this embodiment, the hook member can obtain higher strength and thus is less likely to break.

[0035] In a preferred embodiment of the present application, the elastic support member is a spring, and the end of the spring includes: a coupling section, which is retained in the retaining area of ​​the accommodating groove in the assembled state and extends parallel to the extension direction of the accommodating groove; and a stop section, which is connected to the coupling section and is closer to the end of the spring relative to the coupling section, wherein the stop section extends transversely to the extension direction of the accommodating groove in the assembled state, and is used to at least partially prevent the spring from disengaging from the accommodating groove.

[0036] According to this embodiment, the arrangement of the bent stop section can at least partially block the displacement of the spring along the extending direction of the slot, thereby preventing the spring from escaping from the slot.

[0037] In a preferred embodiment of the present application, the supporting component is a backrest assembly, a pillow assembly, a seat frame assembly, or an armrest assembly of a sofa.

[0038] On the other hand, the present application provides a backrest assembly of a sofa, which includes a support component and a hook component as described above, wherein the hook component is arranged on the support component and is integrally formed with the support component through a blow molding process.

[0039] By setting up an integral structure that is integrally formed with the supporting components, the present application can at least achieve the following beneficial effects: it solves the problems of traditional split hooks such as many parts and complicated processes, provides a stable and reliable hook structure, and is conducive to reducing the process flow and the number of parts, is not dependent on the operating skills of the staff, and is conducive to standardization and large-scale mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To better understand the above and other objects, features, advantages, and functions of the present application, reference may be made to the preferred embodiments shown in the accompanying drawings. In the accompanying drawings, like reference numerals refer to like components. Those skilled in the art should understand that the accompanying drawings are intended to schematically illustrate preferred embodiments of the present application and have no limiting effect on the scope of the present application. The components in the drawings are not drawn to scale.

[0041] FIG1 is a perspective view of a support member and a hook according to a preferred embodiment of the present application;

[0042] FIG2 is a partial enlarged view of the area A shown in FIG1 , wherein no spring is installed in the receiving groove;

[0043] FIG3 is a partial enlarged view of the area A shown in FIG1 from another perspective, wherein a spring is assembled in the receiving groove;

[0044] FIG4 is a perspective view of a support member and a hook according to another preferred embodiment of the present application;

[0045] FIG. 5 is a partial enlarged view of the B region shown in FIG. 4 .

[0046] FIG. 6 is a partially enlarged view of the area B shown in FIG. 4 from another perspective. DETAILED DESCRIPTION

[0047] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. What is described here is only the preferred embodiment of the present application. Those skilled in the art can think of other ways to implement the present application based on the preferred embodiment, and the other ways also fall within the scope of the present application.

[0048] In the furniture industry, the prior art typically employs a method of manufacturing hook components and frame structures / support components separately, resulting in a large number of parts, complex processes, and unstable installation structures. To address at least these issues in the prior art, the present application provides a hook component that is mounted on a support component and integrally formed with the support component through a blow molding process. The hook component also includes an end receiving portion for accommodating an elastic support member. The present application is described in detail below, with reference to various embodiments illustrated in the accompanying drawings.

[0049] First, refer to Figure 1, which shows a support component 1 and a hook component 2 of a preferred embodiment of the present application. The support component 1 includes two first side panels 11a and a second side panel 11b that are spaced apart from each other and opposite to each other, and a bottom panel 14 that is connected between the first and second side panels and extends transversely to the side panels. It should be noted that the directional terms such as "upper", "middle", "lower", "top side", "bottom side", "upper part", "lower part", "top", "bottom", "vertical", "horizontal" and the like used in the description of the present application are all based on the situation where the support component is placed horizontally on the ground with its bottom panel, which is only for the convenience of description and is not intended to limit the present application.

[0050] The hook component 2 shown in Figure 1 is integrally blow-molded with the support component 1. That is, the hook component and the support component are a single, integral component that is blow-molded and demolded as a whole, rather than being separate components that are molded separately. Specifically, one or more hook components 2 are formed on the first side panel 11a and / or the second side panel 11b, preferably in the transition area between the top surface and the inner surface of the side panel.

[0051] Further preferably, referring to FIG2 , each of the first and second side panels 11a, 11b has a stepped structure formed in the aforementioned transition region (i.e., the inner portion of the side panel facing the central region of the support member 1). Taking the portion shown in FIG2 as an example, the stepped structure includes: a first stepped surface 12a extending generally horizontally and formed by the top surface of the side panel; a second stepped surface 12b lower than the first stepped surface and substantially parallel to the first stepped surface 12a; and a third stepped surface 12c extending generally vertically from the first stepped surface to the second stepped surface (i.e., connecting the first and second stepped surfaces).

[0052] Furthermore, the hook component 2 includes: a first half 22a extending approximately vertically upward from the second step surface 12b toward the top side, and a second half 22b formed on the third step surface 12c. Preferably, the second half is a portion extending from the third step surface 12c, which extends toward the inside, that is, toward the center area of ​​the support component. In other embodiments, the second half 22a may also be the third step surface 12c itself. As shown in Figure 2, the first half 22a and the second half 22b are arranged relative to each other, and a receiving portion for accommodating the end of the elastic support member 5 (for example, a spring) is defined between the two halves. The receiving portion is preferably configured as a receiving groove 21 in this embodiment.

[0053] Further preferably, the receiving groove 21 has a retaining region 23 for retaining the end of the elastic support member 5 in the assembled state, and a guide region 24 for guiding the end of the elastic support member 5 into the retaining region 23 when the end of the elastic support member 5 is assembled. The retaining region is the bottom portion of the receiving groove, and the guide region is the upper portion of the receiving groove. In this embodiment, the first half 22a and the second half 22b are connected to each other at their bottom, and the retaining region 23 is formed by the bottom surface 25a at the bottom connection location. The guide region 24 is formed by a first surface 25b of the first half 22a facing away from the center area of ​​the support member 1 (i.e., facing outward) and a second surface 25c of the second half 22b facing the center area of ​​the support member (i.e., facing inward). The first surface 25b and the second surface 25c are both located above the bottom surface 25a and are arranged facing each other. In this way, the receiving groove is constructed as a groove with a roughly U-shaped cross-section, with the bottom of the U-shaped groove being configured as the retaining region and the upper portion of the bottom (particularly the portion near the top) being configured as the guide region.

[0054] Preferably, the first surface 25b and the second surface 25c are configured to extend parallel to each other to form a slide rail structure that facilitates the end of the elastic support member 5 such as a spring to slide into the bottom holding area.

[0055] Further preferably, in a natural state without external force, the gap width of the above-mentioned retaining area 23 is greater than the gap width of the guide area 24. The gap width here refers to the width measured in the extension direction transverse to the receiving groove 21. More specifically, the gap width of the retaining area 23 is the width of the bottom of the U-shaped cross-section of the receiving groove, while the gap width of the guide area 24 is the distance between the first surface 25b and the second surface 25c. More preferably, the first half and / or the second half of the hook component are at least partially elastic. This arrangement makes it difficult for components such as the spring to move upward along the guide area and disengage after entering the retaining area. Instead, a sufficiently large external force is required to enable the spring to overcome the inward elastic bias of the guide area and disengage from the hook component.

[0056] In a preferred embodiment, a stopper is formed on the first surface 25b and / or the second surface 25c. The stopper may be, for example, a stepped surface formed on the first and second surfaces; a continuously extending or discretely arranged rib structure transverse to the extension direction of the receiving groove; or a convex shape with the middle portion of the first and / or second surface bulging inward. Those skilled in the art may, as needed, configure various types of stoppers or combinations thereof above the retaining area (e.g., on the first and second surfaces); and such variations do not depart from the scope of protection of this application.

[0057] In a preferred embodiment, the top surface of the first half 22a and / or the second half 22b extends substantially coplanar with the top surface of the corresponding side panel. This arrangement not only makes demoulding easier, but also makes the hook component and the support component more flat as a whole, improving user comfort.

[0058] In a preferred embodiment, the bottom portion of the first half 22a near the second step surface 12b (particularly its width extending along the receiving groove) is larger than the top portion away from the second step surface 12b. This arrangement prevents the second half of the hook component from breaking when subjected to the tension of an elastic support member such as a spring when assembled. In a preferred embodiment, a recessed area 13 for positioning the hook component 2 is formed on the second step surface 12b and / or the third step surface 12c (or in the transition area therebetween), facilitating positioning of each hook component 2 during assembly.

[0059] In addition, further preferably, a guide groove 26 extending parallel to the extension direction of the receiving groove can be provided in the holding area 23 to guide the end of the elastic support member 5 to be inserted into the receiving groove 21 from the side opening of the holding area 23. This arrangement allows the elastic support member (for example, a spring) to be conveniently inserted into the groove in a variety of ways, that is, it can not only enter the holding area 23 at the bottom from the top guide area 24 of the receiving groove along the first and second surfaces, but can also be directly inserted into it at the side opening of the holding area, so that the staff can select the appropriate assembly operation according to their needs during the assembly process.

[0060] Further, referring to Figure 3, this figure shows a schematic diagram of the above-mentioned hook component 2 and an exemplary elastic support member 5 (e.g., a spring) in a mating state. Preferably, the end of the spring includes: an engagement segment 51, which, in the assembled state, is retained in the retaining area 23 of the receiving slot 21 and extends parallel to the extension direction of the receiving slot 21; and a stop segment 52, which is connected to the engagement segment and is closer to the end of the spring relative to the engagement segment, wherein the stop segment, in the assembled state, extends transversely to the extension direction of the receiving slot 21 to at least partially prevent the spring from disengaging from the receiving slot 21. The stop segment can be bent inward or outward, and the arrangement of this bent stop segment can at least partially prevent the spring from displacing along the extension direction of the slot, thereby preventing the spring from disengaging from the slot. As shown in Figure 1, after the spring is assembled in the hook component 1, one end of the spring is connected to the hook component of the first side plate, and the other end is connected to the hook component at a corresponding position on the second side plate.

[0061] Next, reference is made to Figures 4 to 6, which illustrate a support member 3 and a hook member 4 according to another preferred embodiment of the present application. Similar to what has been described with respect to Figures 1 to 3, in this embodiment, various directional terms are also based on the situation where the support member is placed horizontally on the ground with its bottom plate. As shown in Figure 4, similar to the support member 1 described above, the support member 3 of this example also includes a first side panel 31a and a second side panel 31b that are spaced apart from each other and arranged opposite to each other, but in this embodiment, the side panels 31a, 31b preferably have a plurality of ribs that are arranged sequentially from the top to the bottom and extend approximately transversely to the bottom panel, and the outer walls extending in the vertical direction near the outside of the side panels connect these ribs. The hook member 4 is formed on the side panel, and more specifically, is formed at the above-mentioned ribs.

[0062] Similar to the aforementioned embodiment, the support component 3 and the hook component 4 are also blow-molded as a whole, that is, the side panels, the ribs in the side panels, the outer walls and the hook components extending from the ribs are all formed as a one-piece component as a whole through the blow molding process, rather than being assembled by separately molding them.

[0063] Preferably, the plurality of ribs in each side panel include a first rib 32a, a second rib 32b and a third rib 32c arranged sequentially from the top to the bottom. These ribs extend substantially parallel to each other and substantially in the horizontal direction.

[0064] 5 and 6 , in this embodiment, the hook member 4 includes a first half 42a and a second half 42b. The first half 42a includes a first portion 49a located between the second rib 32b and the third rib 32c, extending inwardly (i.e., toward the center of the support member) beyond the inner edge of the corresponding rib, and a second portion 49b extending from the first portion 49a toward the top side in a substantially vertical direction beyond the height of the second rib 32b. The second half 42b includes a first portion 50a below the second rib 32b, substantially parallel to the rib, and extending beyond the inner edge of the corresponding rib, and a second portion 50b extending vertically from the first portion 50a toward the top side beyond the height of the second rib 32b. In this embodiment, the first portion 49a of the first half 42a and the first portion 50a of the second half 42b are connected to each other, and the second portion 49b of the first half 42a and the second portion 50b of the second half 42b are arranged opposite to each other, thereby defining an accommodating groove 41 for accommodating the end of an elastic support member such as a spring between the two halves. The accommodating groove 41 includes a retaining area 47 for retaining the end of the elastic support member and a guide area 48 for guiding the end of the elastic support member to enter.

[0065] Furthermore, the second portion 49b of the first half 42a includes two oppositely arranged side walls 43a and 43b extending vertically toward the top side, and a transverse wall 44 extending vertically transverse to the side walls is provided between the two side walls to connect the two side walls. The arrangement of the transverse walls can serve as a reinforcing structure, making the side walls less likely to break during use, and can also increase the contact area with the first half during spring assembly, making the assembly structure more secure. More preferably, other reinforcing structures, such as reinforcing ribs, reinforcing holes, etc., can be further provided on the transverse walls. Those skilled in the art can select the shape and specific structure of the above-mentioned side walls, transverse walls and / or reinforcing structures as needed, and these do not depart from the scope of protection of this application.

[0066] Furthermore, the second portion 50b of the second half 42b includes two oppositely disposed side walls 45a, 45b extending vertically from the first portion 50a toward the top side, and a protrusion 46 located between the two side walls and extending parallel to the side walls. The protrusion and the two side walls are arranged parallel to each other and spaced apart.

[0067] Further preferably, corresponding positions of the bottom portion of the second portion 49b of the first half 42a (particularly the two side walls 43a, 43b and the transverse wall 44) and the second portion 50b of the second half 42b (particularly the two side walls 45a, 45b and the protrusion 46) facing the other half are formed with shapes that can cooperate with the end of the elastic support member, and the shapes at corresponding positions on these components jointly define a retaining area 47. For example, the retaining area can be defined by a concave curved surface provided on the sides of the above-mentioned parts facing each other, and the curved surfaces on each part are positioned at the same vertical position, so that after the spring is inserted, it can fit with the corresponding curved surface on each part.

[0068] Further preferably, the top portion of the second portion 49b of the first half 42a (particularly the two side walls 43a, 43b and the transverse wall 44) and the second portion 50b of the second half 42b (particularly the two side walls 45a, 45b and the protrusion 46) facing the other half is formed with a guide area 48. The guide area can be defined by a smooth convex surface provided on the side of the above-mentioned parts facing the other half, so as to allow components such as a spring to easily slide into the bottom retaining area 47 of the receiving groove 41 under the action of an external force, thereby facilitating the installation operation by the staff.

[0069] More preferably, the distance between the two side walls 43a, 43b of the first half 42a is smaller than the distance between the two side walls 45a, 45b of the second half 42b. This arrangement allows the side walls 43a, 43b, 45a, 45b of the first and second halves, as well as the protrusion 46, to be staggered front to back in the extending direction of the receiving groove 41. This allows the side walls and protrusions to apply force uniformly at different positions along the engaging section to retain the elastic support member 5 (e.g., the engaging section 51 of the spring) in the retaining area when the elastic support member 5 is inserted. This staggered arrangement not only saves material, but also ensures joint strength and increases the overall strength of the structure.

[0070] More preferably, the height of the protrusion 46 extending toward the top side is lower than the two side walls 45a, 45b of the second half, and the thickness is greater than the two side walls. This configuration of the protrusion itself is less likely to break, thereby strengthening the engagement between the hook component and the spring and also serving as a reinforcement structure, strengthening the overall structure of the second half.

[0071] More preferably, the stoppers (e.g., ribs, stepped surfaces, and / or convex shapes) of the hook member 2 described with respect to Figures 1 and 2 can be used in this embodiment, and can be provided, for example, on the facing surfaces of the guide regions of the first and second halves. Those skilled in the art can arrange the stoppers in appropriate locations as needed to further prevent the end of the elastic support member 5 from disengaging from the receiving groove 41.

[0072] It is understood that the spring used in conjunction with the hook component 2 described in FIG3 can also be used in conjunction with the hook component 2 in this embodiment, and its various preferred structures can be used in this embodiment. In addition, the elastic support member described herein can also be a variety of components other than springs, such as ropes, straps, fabrics, rubber bands, etc.

[0073] Furthermore, in some preferred embodiments, metal pieces may be embedded in various portions of the various exemplary hook components described above to further strengthen the structure of each portion and prevent the hook component from breaking due to the tension of the spring during transportation or user use after assembly. The metal piece is a sheet-like component that matches the shape of the hook component and is disposed in various portions of, for example, the first and / or second halves of the hook component described above to reinforce each portion.

[0074] It is understood that the support components and hook components of the various embodiments described above can be combined as needed, and the specific features thereof can also be combined, without being limited to the specific technical solutions described in the above embodiments. For example, each half of hook component 2 can also be configured as hook component 4, with multiple wall-like structures staggered along the receiving groove, rather than extending continuously as shown in Figure 2. Conversely, hook component 4 can also adopt the continuously extending half of hook component 2. All possible combinations fall within the scope of protection of the claims of this application.

[0075] The present application also provides a sofa backrest assembly, which includes the aforementioned support component and a hook component, wherein the hook component is arranged on the support component and is integrally formed with the support component through a blow molding process. The hook component is used to suspend / fix an elastic support member such as a spring.

[0076] It can be understood that the above-mentioned supporting component is not limited to the backrest assembly of the sofa, and it can be various components on various devices that can be thought of by those skilled in the art, such as but not limited to the backrest assembly, pillow assembly, seat frame assembly, or armrest assembly of the sofa.

[0077] The above description of the various embodiments of the present application is provided to one of ordinary skill in the relevant art for the purpose of description. It is not intended that the present application be exclusive or limited to a single disclosed embodiment. As above, a person of ordinary skill in the art will understand the various substitutions and modifications of the present application. Therefore, although some alternative embodiments are specifically described, a person of ordinary skill in the art will understand or relatively easily develop other embodiments. The present application is intended to include all substitutions, modifications and variations of the present application described herein, as well as other embodiments that fall within the spirit and scope of the present application described above.

Claims

1. A hook component (2, 4), characterized in that: The hook component (2, 4) is arranged on the support component (1, 3) and is integrally formed with the support component through a blow molding process, and the hook component (2, 4) comprises a receiving portion for receiving the end of an elastic support member (5).

2. The hook component according to claim 1, characterized in that: The accommodating portion is configured as an accommodating groove (21, 41), and the accommodating groove (21, 41) comprises: A retaining area (23, 47) for retaining the end of the elastic support member (5) in an assembled state; and a guide area (24, 48) for guiding the end of the elastic support member (5) into the holding area when assembling the elastic support member, and Therein, a gap width of the holding region in a direction transverse to an extension direction of the receiving groove is greater than a corresponding gap width of the guide region.

3. The hook component according to claim 2, characterized in that: The support component (1) comprises a first side plate (11a) and a second side plate (11b) which are separated and arranged opposite to each other, and each of the first side plate (11a) and the second side plate (11b) is formed with a step-like structure at an inner portion facing the central area of ​​the support component (1), wherein the step-like structure comprises: a first step surface (12a) formed by a top surface of a corresponding side plate; a second step surface (12b) lower than the first step surface and extending parallel to the first step surface (12a); and A third step surface (12c) extends from the first step surface (12a) to the second step surface (12b).

4. The hook component according to claim 3, characterized in that: The hook component (2) comprises: a first half portion (22a) extending from the second step surface (12b) toward the top side, and a second half portion (22b) formed on the third step surface (12c), wherein the second half portion (22b) is a portion extending from the third step surface (12c) toward the central area of ​​the support member, or is the third step surface (12c) itself, The first half (22a) and the second half (22b) are arranged opposite to each other and define the receiving groove (21) therebetween.

5. The hook component according to claim 4, characterized in that: The holding area (23) is formed by the interconnected bottom surfaces (25a) of the first half (22a) and the second half (22b), and The guide area (24) is formed by a first surface (25b) of the first half facing away from the central area of ​​the support component and a second surface (25c) of the second half facing the central area of ​​the support component, wherein the first surface (25b) and the second surface (25c) are both located above the bottom surface and arranged facing each other.

6. The hook component according to claim 5, characterized in that: A stopper is formed on the first surface (25b) and / or the second surface (25c).

7. The hook component according to claim 6, characterized in that: The stop portion is a continuously extending or discretely arranged rib structure arranged transversely to the extension direction of the accommodating groove (21); or the stop portion is constructed as a stepped surface; or the stop portion is constructed as a convex shape protruding inward from the middle part of the first surface (25b) and / or the second surface (25c).

8. The hook component according to claim 4, characterized in that: The top surface of the first half (22a) and / or the second half (22b) extends coplanarly with the top surface of the corresponding side panel.

9. The hook component according to claim 4, characterized in that: The size of the bottom side portion of the first half portion close to the second step surface (12b) is larger than the size of the top side portion away from the second step surface (12b).

10. The hook component according to claim 5, characterized in that: A guide groove (26) extending parallel to the extension direction of the accommodating groove (21) is provided in the retaining area (23), and the guide groove (26) is used to guide the end of the elastic support member (5) to be inserted into the accommodating groove (21) from an opening formed in one side and / or both sides of the retaining area (23).

11. The hook component according to claim 3, characterized in that: A recessed area (13) for positioning the hook component (2) is formed on the step-shaped structure.

12. The hook component according to claim 2, characterized in that: The support component (3) comprises a first side plate (31a) and a second side plate (31b) which are separated and arranged opposite to each other, and each of the first side plate and the second side plate comprises a first rib plate (32a), a second rib plate (32b) and a third rib plate (32c) which are arranged in sequence from the top to the bottom.

13. The hook component according to claim 12, characterized in that: The hook component (4) comprises a first half portion (42a) and a second half portion (42b), wherein the first half (42a) comprises a first portion (49a) located between the second rib plate (32b) and the third rib plate (32c), extending toward the central area of ​​the support component (4) and crossing the rib plates to exceed the inner edge of the corresponding rib plate, and a second portion (49b) extending from the first portion (49a) toward the top side and exceeding the height of the second rib plate (32b); and The second half (42b) includes a first portion (50a) extending below the second rib plate (32b) substantially parallel to the rib plate and beyond the inner edge of the corresponding rib plate, and a second portion (50b) extending vertically from the first portion (50a) toward the top side and beyond the height of the second rib plate (32b). The second portion (49b) of the first half (42a) and the second portion (50b) of the second half (42b) are arranged opposite to each other, and the receiving groove (41) is defined therebetween.

14. The hook component according to claim 13, characterized in that: The second portion (49b) of the first half (42a) includes two oppositely disposed side walls (43a, 43b) extending vertically toward the top side, and a transverse wall (44) extending vertically transversely to the side walls between the two side walls; and The second portion (50b) of the second half (42b) includes two oppositely disposed side walls (45a, 45b) extending vertically toward the top side, and a protrusion (46) located between the two side walls and extending parallel to the side walls, and Wherein, the distance between the two side walls of the first half is smaller than the distance between the two side walls of the second half.

15. The hook component according to claim 14, characterized in that: The second part (49b) of the first half (42a) and the bottom part of the second part (50b) of the second half (42b) facing the other half are formed with a shape that can be matched with the end of the elastic support member (5) to jointly define the holding area (47), and The second part (49b) of the first half (42a) and the top part of the second part (50b) of the second half (42b) facing the other half are formed with the guide area (48).

16. The hook component according to claim 15, characterized in that: The retaining area is defined by concave curved surfaces arranged on the first half (42a) and the second half (49b) on the side facing each other, and the curved surfaces are constructed to be able to fit with the end of the elastic support member (5).

17. The hook component according to claim 14, characterized in that: The height of the protrusion (46) of the second half extending in the top direction is lower than the height of the two side walls (45a, 45b) of the second half, and the thickness along the extending direction of the accommodating groove is greater than the two side walls.

18. The hook component according to claim 1, characterized in that: A metal part is pre-buried in the hook component (2, 4), and the metal part is a sheet-shaped part matching the shape of the hook component (2, 4).

19. The hook component according to claim 2, characterized in that: The elastic support member (5) is a spring, and the end of the spring comprises: a joining section (51), which is held in the holding area of ​​the receiving groove in an assembled state and extends parallel to the extension direction of the receiving groove; and A stop section (52) is connected to the engagement section (51) and is closer to the end of the spring than the engagement section (51), wherein the stop section (52) extends horizontally transversely to the extension direction of the accommodating groove (21, 41) in the assembled state, and is used to at least partially prevent the spring from being disengaged from the accommodating groove (21, 41).

20. The hook component according to any one of claims 1 to 19, characterized in that: The supporting components (1, 3) are the backrest assembly, the pillow assembly, the seat frame assembly, or the armrest assembly of the sofa.

21. A sofa backrest assembly, characterized in that: The backrest assembly comprises a support component (1, 3) and a hook component (2, 4) according to any one of claims 1 to 20, wherein the hook component (2, 4) is arranged on the support component (1, 3) and is integrally formed with the support component by a blow molding process.

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