Joint assembly for joining outer members

Abstract

The utility model relates to a joint assembly (100) used for jointing an external component (200), the joint assembly (100) comprises a body (110), the body (110) is made of plastics and is provided with a first outer surface (S1) in at least one area, and the body (110) is provided with at least one concave part (111) which is concave inwards relative to the first outer surface (S1) in the at least one area, the concave part (111) is provided with an opening (115); and a joint piece (120), the joint piece (120) is provided with a joint part (121) used for being jointed with the external component (200), at least one part of the joint piece (120) is arranged in the concave part (111), and the joint piece (120) is limited by the concave part (111) in the direction (F) of load force applied by the external component (200) to the joint piece (120). According to the joint assembly, stable connection can be formed between the joint piece and the plastic body.

Description

Technical Field

[0001] The utility model relates to a joining assembly for joining external components, in particular to a blow-molded part into which a metal part is embedded during the molding process. Background Art

[0002] In production activities, plastic components are widely used, including injection molded parts, blow molded parts, extruded parts, etc. Wear is easy to occur at the connection between plastic components and other components, thereby shortening the life of the product. For this reason, joint components made of other materials, such as metal parts, are often used at the connection to prevent wear. However, when using the above method, it is necessary to consider how to form a stable connection between the joint component and the plastic component to prevent the joint component from disengaging from the plastic component, especially when disengaging from the plastic component due to load under working conditions.

[0003] In addition, blow molded parts are limited in configuration due to their thin-walled, hollow configuration and the fact that they are limited by the inflation air pressure during the molding process. This makes it particularly challenging to embed metal parts in a certain configuration to form a stable connection. Utility Model Content

[0004] The utility model aims to provide a joining assembly for joining external components, which comprises a body made of plastic and a joining piece for joining with the external component, and forms a stable connection between the joining piece and the plastic body.

[0005] The coupling assembly according to the utility model specifically includes: a body, which is made of plastic and has a first outer surface in at least one area, and the body has at least one recessed portion in the at least one area which is recessed inward relative to the first outer surface, and the recessed portion has an opening; and a coupling piece, which has a coupling portion for coupling the external component, wherein at least a portion of the coupling piece is arranged in the recessed portion and is limited by the recessed portion in the direction of the load force applied by the external component to the coupling piece.

[0006] By placing at least a portion of the engaging piece in the recessed portion of the plastic body, and using the recessed portion to resist the tendency of the engaging piece to separate from the body due to the load of the external component, a stable connection between the engaging piece and the body can be ensured.

[0007] In a preferred embodiment, the body is formed by a blow molding process, and the engaging member is embedded in the body during the blow molding process of the body. By pre-embedding the engaging member during the molding process, the configuration of the recessed portion can be complementary to the configuration of the portion of the engaging member in the recessed portion, so that the engaging member can be stably placed in the recessed portion or even fixed to the recessed portion.

[0008] In a preferred embodiment, a projection of a portion of the engagement element in the recessed portion on the first outer surface at least overlaps a projection of an opening of the recessed portion on the first outer surface with a first width.

[0009] In the present application, "the projection of A on B at least overlaps the projection of C on B by a first width", means that the projection of A on B covers the projection of C on B, and the shortest distance between any point on the outer edge of the projection of C on B and the outer edge of the projection of A on B is greater than or equal to the first width. Therefore, "the projection of the portion of the engaging member in the recess on the first outer surface overlaps the projection of the opening of the recess on the first outer surface by at least a first width", which can effectively ensure that the opening of the recess is small enough so that the engaging member is fixed in the recess.

[0010] Preferably, the recessed portion has a side wall and a bottom, the side wall is provided with an edge extending parallel to the first outer surface at a position away from the bottom, and the edge defines an opening of the recessed portion.

[0011] Alternatively, the recessed portion has a side wall and a bottom, and the side wall is at least partially tapered in a direction away from the bottom.

[0012] The edge extending parallel to the first outer surface or the tapered side wall can effectively ensure that the projection of the opening on the first outer surface is smaller than the projection of the part of the coupling in the recess on the first outer surface, thereby ensuring a particularly stable connection between the coupling and the body.

[0013] Optionally, the engaging portion is arranged in the recessed portion, and the engaging portion is arranged centrally in the engaging member and exposed through the opening. On the one hand, the engaging portion arranged centrally in the engaging member is adapted to cooperate with the uniformly extended edge of the recessed portion, so that the engaging portion can be exposed through the opening defined by the uniformly extended edge. On the other hand, the uniformly extended edge has a stable structural strength to define the engaging member in the recessed portion.

[0014] Preferably, the engaging portion includes at least one of a threaded hole, a hook, and a buckle.

[0015] Preferably, the body has a first wall thickness in a portion other than the at least one region, and has a second wall thickness at least partially in the at least one region, the second wall thickness being greater than the first wall thickness. Providing a structure with a larger wall thickness in the at least one region can effectively enhance the structural strength of the connection, offsetting the problem of thinning of the wall thickness and weakening of the strength in the region, especially during the molding process of the blow molded part.

[0016] Preferably, the portion having the second wall thickness in the at least one region is located at a connection with the recessed portion.

[0017] Preferably, the first width is greater than the first wall thickness, which further improves the structural strength of the restriction structure of the recessed portion on the engaging member.

[0018] Optionally, in order to at least partially form a second wall thickness greater than the first wall thickness in the at least one region, the engagement piece may be provided with a flange at a position away from the opening, and the flange is covered by the side wall of the recessed portion.

[0019] Optionally, in order to at least partially form a second wall thickness greater than the first wall thickness in the at least one region, the first outer surface may be provided with a raised boss portion at a position close to the opening.

[0020] In a preferred embodiment, the body has a second outer surface opposite to the first outer surface, the bottom is provided with a through hole penetrating to the second outer surface, and the external component passes through the through hole from the second outer surface to engage with the engaging portion of the engaging piece.

[0021] Preferably, the body has a first wall thickness, the edge extends with a second width, the second width is less than or equal to the first wall thickness. More preferably, the second width is greater than or equal to 1 / 3 of the first wall thickness and less than or equal to 2 / 3 of the first wall thickness.

[0022] When the external member passes through the through hole from the second outer surface and engages with the engaging portion of the engaging member, the load force applied by the external member is mainly borne by the second outer surface and the bottom of the recessed portion, and the edge mainly plays a role in preventing the engaging member from being separated from the body in a no-load state. Therefore, the edge can be constructed to be relatively small, which is particularly advantageous when the body is formed by a blow molded part, and the inflation air pressure required for the blow molded part molding process can be reduced.

[0023] In a preferred embodiment, the portion of the joint member in the recess has a uniform cross-section and extends from the first outer surface along the extension direction, and wherein the angle between the direction of the load force applied by the external member on the joint member and the extension direction is less than or equal to 90°. The recess formed in this way can keep the joint member in the recess when a load is applied to the joint member, and can remove the joint member for easy replacement when the load is removed.

[0024] Optionally, the engaging portion includes at least one of a threaded hole, a hook, and a buckle.

[0025] Optionally, the coupling element is made of metal material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0027] Figure 1 A plan view showing a first embodiment of a joint assembly of the present invention;

[0028] Figure 2 Shows Figure 1 A cross-sectional view of the joint assembly taken along line AA;

[0029] Figure 3 A plan view showing a second embodiment of the joint assembly of the present invention;

[0030] Figure 4a Shows Figure 3 A cross-sectional view of the joint assembly taken along line BB;

[0031] Figure 4b Shows Figure 3 A cross-sectional view of the joint assembly taken along line CC;

[0032] Figure 5 A cross-sectional view showing a third embodiment of the joint assembly of the present invention;

[0033] Figure 6 Shows Figure 5 A cross-sectional view of the joint assembly taken along line DD;

[0034] Figure 7 A cross-sectional view showing a fourth embodiment of the joint assembly of the present invention; and

[0035] Figure 8 Shows Figure 7 A cross-sectional view of the bonding assembly taken along line EE. DETAILED DESCRIPTION

[0036] Now, with reference to the accompanying drawings, the specific embodiments of the present invention are described in detail. What is described here is only the preferred embodiment of the present invention. Those skilled in the art can think of other ways to implement the present invention based on the preferred embodiment, and the other ways also fall within the scope of the present invention.

[0037] Figure 1A plan view of a first embodiment of a coupling assembly 100 of the utility model is shown. In this embodiment, the coupling assembly 100 is configured as a basic structure of a sofa armrest, such as a blow-molded part of a sofa armrest, and the external member 200 is configured as a bolt. On both sides of the flat first outer surface S1 of the coupling assembly 100, the external member 200 is fixed to the coupling assembly 100 together with the bracket 300. Here, the bracket 300 is formed by bending a metal plate, wherein a through hole is opened on the bracket 300, and the external member 200 is coupled with the coupling assembly 100 after passing through the through hole on the bracket 300, thereby fixing the bracket 300 to the coupling assembly 100.

[0038] Figure 2 Shows Figure 1 sectional view of the joint assembly 100 taken along line AA in FIG. As can be seen from the figure, the joint assembly 100 includes a body 110 and a joint piece 120, wherein the body 110 is formed by a blow molding process, and the joint piece 120 is made of a metal material into a circular ring and has a threaded hole arranged in the center, i.e., a joint portion 121 for engaging with an external member 200 (bolt). The body 110 can also be formed by injection molding, extrusion molding, wood molding, etc. The joint piece 120 can be embedded in the body 110 during the molding process of the body 110.

[0039] The body 110 is provided with a recessed portion 111 in the region where the first outer surface S1 is located, the recessed portion 111 having a bottom 112 and a side wall 113, and the side wall 113 is provided with an edge 114 extending parallel to the first outer surface S1 at a position away from the bottom 112, and the edge 114 defines an opening 115 of the recessed portion 111. The engaging portion 121 is exposed through the opening 115 so that the external member 200 can engage with the engaging portion 121. The external member 200 applies a load force to the engaging member 120 along the load force direction F.

[0040] In this embodiment, the engaging member 120 is entirely located in the recessed portion 111, and is restricted by the edge 114 of the recessed portion 111 in the direction of the load force F applied by the external member 200, and cannot be separated from the recessed portion 111. In particular, the edge 114 uniformly extends from the side wall 113 along a direction parallel to the first outer surface S1 by a distance of W1 and forms an annular portion, so that the projection of the engaging member 120 on the first outer surface S1 overlaps the projection of the opening 115 on the first outer surface S1 with a first width W1, that is, the projection of the engaging member 120 on the first outer surface S1 covers the projection of the opening 115 on the first outer surface S1, and the shortest distance from any point on the outer edge of the projection of the opening 115 on the first outer surface S1 to the outer edge of the projection of the engaging member 120 on the first outer surface S1 is greater than or equal to the first width W1. In other words, this enables the edge 114 to block the engaging member 120 from detaching from the body 110 with the annular portion formed by it. This ensures a particularly stable connection between the engaging member 120 and the body 110. In other words, in this embodiment, after the body 110 is formed, the coupling member 120 is inseparable from the body 110 .

[0041] As a blow molded part, the body 110 has a first wall thickness d1 in most of the parts, or in other words, in the part except for the area where the recessed portion 111 is arranged. During the blow molding process of the body 110, due to the presence of the coupling member 120, the wall of the body 110 is stretched at the position of the coupling member 120, thereby forming a third wall thickness d3 smaller than the first wall thickness d1 on the bottom 112 and the side wall 113. Since the third wall thickness d3 is less than the first wall thickness d1, the strength of the coupling assembly 100 is lower at the recessed portion 111, or at the position where the coupling member 120 is located. However, the coupling assembly 100 is often subjected to tensile loads from external components here, so its strength requirements are often higher.

[0042] In order to enhance the strength of the position where the joint 120 is located, a second wall thickness d2 may be arranged in the area where the recess 111 is arranged and at the connection with the recess 111, and the second wall thickness d2 is greater than the first wall thickness d1. In this embodiment, this arrangement is achieved by providing an outwardly protruding boss 116 in the area where the recess 111 is arranged, especially at a position close to the opening 115. Figure 2 In the embodiment, the boss portion 116 on the left side is arranged closer to the opening 115 than the boss portion 116 on the right side. The boss portion 116 extends circumferentially to the opening, thereby increasing the thickness of the second wall thickness d2 relative to the first thickness d1 and thus strengthening the structural strength of the connection with the recessed portion, effectively preventing the connection between the joint 120 and the body 110 from being damaged by the load force applied by the external member 200.

[0043] In addition, as described above, the edge 114 can block the engagement member 120 from detaching from the body 110 with the annular portion formed by it, and it can be imagined that the strength of this blocking structure increases with the increase of the width of the annular portion of the edge 114, that is, W1. In particular, in this embodiment, the first width W1 is equal to the first wall thickness d1, so that the restriction of the recessed portion 111 to the engagement member 120 has basic structural strength.

[0044] Figure 3 The plan view of the second embodiment of the joint assembly 100 of the utility model is shown. In this embodiment, the joint assembly 100 is configured as a basic structure of a sofa base, such as a blow-molded part of a sofa base, and the external member 200 is configured as a bolt. On the outer side of the flat first outer surface S1 of the joint assembly 100, at positions closer to the two ends, two external members 200 together with a gasket 400 are fixed to the joint assembly 100; and at positions closer to the middle, another two external members 200 together with a base bracket 500 (see Figure 4b ) are fixed together with the joining assembly 100.

[0045] Figure 4a Shows Figure 3 sectional view of the joint assembly 100 taken along line BB in FIG. As can be seen from the figure, the joint assembly 100 includes a body 110 and a joint piece 120, wherein the body 110 is formed by a blow molding process, and the joint piece 120 is made of a metal material into a nut having a flange 122 and a threaded hole arranged in the center, i.e., a joint portion 121 for engaging with an external member 200 (bolt). The body 110 can also be formed by injection molding, extrusion molding, wood molding, etc. The joint piece 120 can be embedded in the body 110 during the molding process of the body 110.

[0046] The body 110 is provided with a recessed portion 111 in the region where the first outer surface S1 is located, the recessed portion 111 having a bottom 112 and a side wall 113, and the side wall 113 is provided with an edge 114 extending parallel to the first outer surface S1 at a position away from the bottom 112, and the edge 114 defines an opening 115 of the recessed portion 111. The engaging portion 121 is exposed through the opening 115 so that the external member 200 can engage with the engaging portion 121 from the first outer surface S1 through the opening 115. The external member 200 applies a load force to the engaging member 120 along the load force direction F. The side wall 113 covers the flange 122 to form a covering portion.

[0047] exist Figure 4aIn the embodiment, the engaging member 120 is entirely located in the recessed portion 111, and is limited by the edge 114 of the recessed portion 111 in the direction F of the load force applied by the external member 200, and cannot be separated from the recessed portion 111. In particular, the edge 114 uniformly extends a certain distance from the side wall 113 in a direction parallel to the first outer surface S1 and forms an annular portion, and the engaging member 120 has a flange 122 covered by the side wall 113, so that the projection of the engaging member 120 on the first outer surface S1 covers the projection of the opening 115 on the first outer surface S1 with a first width W1. In other words, this enables the edge 114 to block the engaging member 120 from detaching from the body 110 by the annular portion formed by it and the side wall 113 to block the flange 122 of the engaging member 120 by it. This ensures a particularly stable connection between the engaging member 120 and the body 110. In other words, in this embodiment, after the body 110 is formed, the engaging member 120 and the body 110 are inseparable.

[0048] In particular, the flange 122 of the joint 120 is tapered on the side close to the opening 115, and the side wall 113 is also partially tapered, thereby further ensuring a particularly stable connection between the joint 120 and the body 110. In addition, by arranging the outer side of the joint 120 to be at least partially tapered toward the opening 115, the side wall 113 can be formed on the inner side to be tapered toward the opening 115, which can also ensure a particularly stable connection between the joint 120 and the body 110 without providing the edge 114.

[0049] Similarly, as a blow molded part, the body 110 has a first wall thickness d1 in most of the body, or in other words, in a portion other than the region where the recessed portion 111 is arranged, but a third wall thickness d3 smaller than the first wall thickness d1 is formed on the bottom 112 and the side wall 113. In order to enhance the strength at the position where the engaging member 120 is located, the side wall 113 of the recessed portion 111 has a second wall thickness d2 at a position close to the opening 115, and the second wall thickness d2 is greater than the first wall thickness d1. In this embodiment, this arrangement is achieved by arranging a flange 122 at a position of the engaging member 120 away from the opening 115.

[0050] In addition, as described above, the edge 114 can block the engagement member 120 from being separated from the body 110 by the annular portion formed by the edge 114 and the covering portion of the flange 122 of the engagement member 120 formed by the side wall 113, and it can be imagined that the strength of this blocking structure increases with the increase of the sum of the widths of the annular portion of the edge 114 and the covering portion of the side wall 113, that is, W1. In particular, in this embodiment, the first width W1 is greater than the first wall thickness d1, so that the restriction of the engagement member 120 by the recessed portion 111 has an enhanced structural strength.

[0051] Figure 4b Shows Figure 3 1 is a cross-sectional view of the joint assembly 100 taken along line CC. As can be seen from the figure, the joint assembly 100 includes a body 110 and another joint piece 120, wherein the body 110 is formed by a blow molding process, and the joint piece 120 is made of a metal material into a D-shaped metal plate having a flange 122 and a threaded hole arranged in the center (see Figure 3 ), wherein the threaded hole is used as a joint portion 121 for jointing with the external member 200 (bolt). The body 110 can also be formed by injection molding, extrusion molding, wood molding, etc. The joint 120 can be embedded in the body 110 during the molding process of the body 110.

[0052] The body 110 is provided with a recessed portion 111 in the area where the first outer surface S1 is located, and the recessed portion 111 has a bottom 112 and a side wall 113, and the side wall 113 is provided with an edge 114 extending parallel to the first outer surface S1 at a position away from the bottom 112, and the edge 114 defines an opening 115 of the recessed portion 111. The body 110 also has a second outer surface S2 arranged opposite to the first outer surface S1, and the bottom 112 is provided with a through hole 117 penetrating to the second outer surface S2, and the external member 200 passes through the through hole 117 from the second outer surface S2 to engage with the engaging portion 121 of the engaging member 120 to fix the base bracket 500 to the second outer surface S2 of the engaging assembly 100. The external member 200 applies a load force to the engaging member 120 along the load force direction F.

[0053] exist Figure 4b In the embodiment, the engaging member 120 is entirely located in the recessed portion 111 and is limited by the bottom 112 of the recessed portion 111 in the load force direction F applied by the external member 200. In particular, the edge 114 uniformly extends from the side wall 113 along a direction parallel to the first outer surface S1 by the second width W2 and forms an annular portion, so that the projection of the engaging member 120 on the first outer surface S1 covers the projection of the opening 115 on the first outer surface S1 with a first width (here the first width is equal to the second width W2) in an interference manner. In other words, this enables the edge 114 to block the engaging member 120 from detaching from the body 110 with the annular portion formed by it. This ensures a stable connection between the engaging member 120 and the body 110.

[0054] Likewise, as a blow-molded part, the body 110 has a first wall thickness d1, but a third wall thickness d3 smaller than the first wall thickness d1 is formed on the bottom 112 and the side wall 113. Figure 4aThe difference is that the load force applied by the external member 200 is mainly borne by the bottom 112 of the recessed portion 111, and the edge 114 mainly plays a role in preventing the coupling member 120 from being separated from the body in a no-load state. Therefore, the second width W2 extended by the edge 114 can be configured to be greater than 0 and less than or equal to the first wall thickness d1, and more preferably configured to be greater than or equal to 1 / 3 of the first wall thickness d1 and less than or equal to 2 / 3 of the first wall thickness d1, so that the edge 114 can be formed with a smaller inflation pressure, which is extremely beneficial to the molding of the blow molded part.

[0055] Figure 5 FIG. 1 shows a plan view of a third embodiment of the joint assembly 100 of the present invention. In this embodiment, the joint assembly 100 is configured as a basic structure of a sofa backrest, such as a blow-molded part of a sofa backrest, and the outer member 200 is configured as a bolt. On the outer side of the flat first outer surface S1 of the joint assembly 100, two outer members 200 together with a connector 600 and a gasket 700 (see FIG. 1 ) are connected to each other. Figure 6 ) are fixed together to the joining assembly 100.

[0056] Figure 6 Shows Figure 5 A cross-sectional view of the joint assembly 100 taken along line DD. Figure 5 and Figure 6 As can be seen in the figure, the joint assembly 100 includes a body 110 and a joint piece 120, wherein the body 110 is formed by a blow molding process, and the joint piece 120 is made of a metal material into an elongated circular metal plate, and the metal plate has two threaded holes as a joint portion 121 for engaging with the external member 200 (bolt). The body 110 can also be formed by injection molding, extrusion molding, wood molding, etc. The joint piece 120 can be embedded in the body 110 during the molding process of the body 110.

[0057] The body 110 is provided with a recessed portion 111 in the region where the first outer surface S1 is located, and the recessed portion 111 has a bottom 112 and a side wall 113, and the side wall 113 is provided with an edge 114 extending parallel to the first outer surface S1 at a position away from the bottom 112, and the edge 114 defines an opening 115 of the recessed portion 111. The body 110 also has a second outer surface S2 arranged opposite to the first outer surface S1, and the bottom 112 is provided with a through hole 117 penetrating to the second outer surface S2, and the external member 200 passes through the through hole 117 from the second outer surface S2 to engage with the engaging portion 121 of the engaging member 120 to fix the connecting member 600 and the gasket 700 to the second outer surface S2 of the engaging assembly 100. The external member 200 applies a load force to the engaging member 120 along the load force direction F.

[0058] and Figure 4b Similar to the implementation in Figure 6In the embodiment, the engaging member 120 is entirely located in the recessed portion 111 and is limited by the bottom 112 of the recessed portion 111 in the direction F of the load force applied by the external member 200, and cannot be separated from the recessed portion 111. The edge 114 is uniformly extended from the side wall 113 along a direction parallel to the first outer surface S1 by the second width W2 and forms an annular portion, so that the projection of the engaging member 120 on the first outer surface S1 covers the projection of the opening 115 on the first outer surface S1 with a first width (here the first width is equal to the second width W2) in an interference manner. In other words, this enables the edge 114 to block the engaging member 120 from separating from the body 110 with the annular portion formed by it. This ensures a stable connection between the engaging member 120 and the body 110.

[0059] Similarly, as a blow-molded part, the main body 110 here has a first wall thickness d1, but a third wall thickness d3 smaller than the first wall thickness d1 is formed on the bottom 112 and the side wall 113, and the second width W2 extended by the edge 114 is constructed to be equal to 2 / 3 of the first wall thickness d1, so that the edge 114 can be formed with a smaller blowing air pressure to facilitate the molding of the blow-molded part.

[0060] Figure 7 FIG. 1 is a plan view of a fourth embodiment of the joint assembly 100 of the utility model. In this embodiment, the joint assembly 100 is configured as a basic structure of a sofa backrest, such as a blow-molded part of a sofa backrest, and the external member 200 is configured as a spring. The external member 200 is joined to the joint assembly 100 on the flat first outer surfaces S1 respectively provided on the left and right sides of the joint assembly 100.

[0061] Figure 8 Shows Figure 7 sectional view of the coupling assembly 100 taken along line EE. As can be seen from the figure, the coupling assembly 100 includes a main body 110 and a coupling member 120, wherein the main body 110 is formed by a blow molding process, and the coupling member 120 is made of a metal material into a bent metal hook, which has a uniform cross-section and a coupling portion 121 for coupling with an external member 200 (spring). The main body 110 can also be formed by injection molding, extrusion molding, wood molding and other processes. The coupling member 120 can be embedded in the main body 110 during the molding process of the main body 110. In particular, in this embodiment, the coupling member 120 can be separated from the main body 110 after the main body 110 is molded.

[0062] The body 110 is provided with a recessed portion 111 in the area where the first outer surface S1 is located, and the recessed portion 111 has an opening 115 on the first outer surface S1 and is configured to extend concavely from the first outer surface S1 along the extension direction L to form a groove. Correspondingly, the engaging member 120 has a bent section that can enter the groove of the recessed portion 111 and an engaging portion 121 outside the recessed portion, wherein the bent section that can enter the groove of the recessed portion 111 also extends from the first outer surface S1 along the extension direction L. After the external component 200 is engaged with the engaging portion 121 of the engaging member 120, a load force acting along a direction F is applied to the engaging member 120, wherein the extension direction L and the load force direction F form an acute angle α. In this case, even if the joint member 120 is not fixed in the recessed portion 111, the joint member 120 can still be restricted by the side wall 113 of the recessed portion 111 in the load force direction F applied by the external member 200, that is, under the continuous load force of the external member 200, the joint member 120 can also establish a stable connection with the body 110. In particular, the angle between the extension direction L and the load force direction F needs to be less than or equal to 90°, preferably between 30° and 60°.

[0063] The joint 120 detachable from the body 110 can be easily replaced and is particularly suitable for situations where the load force direction F is stable and not perpendicular to the first outer surface S1 , and especially suitable for situations where the load force direction F is parallel to the first outer surface S1 .

[0064] The above description of various embodiments of the present invention is provided to a person of ordinary skill in the relevant art for the purpose of description. It is not intended to exclude or limit the present invention to a single disclosed embodiment. As above, a person of ordinary skill in the art will understand the various substitutions and variations of the present invention. 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 invention is intended to include all substitutions, modifications and variations of the present invention described herein, as well as other embodiments that fall within the spirit and scope of the present invention described above.

[0065] Reference numerals list

[0066] 100 Joint components

[0067] 110 body

[0068] 111 Depression

[0069] 112 bottom

[0070] 113 Sidewall

[0071] 114 Edge

[0072] 115 Opening

[0073] 116 Boss

[0074] 120 Joints

[0075] 121 Joint

[0076] 122 Flange

[0077] 200 External components

[0078] 300 Bracket

[0079] 400 Gasket

[0080] 500 Base bracket

[0081] 600 Connectors

[0082] 700 Gasket

[0083] S1 First outer surface

[0084] S2 Second outer surface

[0085] d1 first wall thickness

[0086] d2 Second wall thickness

[0087] d3 Third wall thickness

[0088] W1 First Width

[0089] W2 Second width

[0090] F Load force direction

[0091] L Extension direction

[0092] α Angle between the extension direction and the load force direction

Claims

1. A joining assembly (100) for joining an external component (200), characterized in that: The engagement assembly (100) comprises: A body (110) made of plastic and having a first outer surface (S1) in at least one region, and having at least one recessed portion (111) inwardly recessed relative to the first outer surface (S1) in the at least one region, the recessed portion (111) having an opening (115); and A coupling member (120) having a coupling portion (121) for coupling with the external member (200), wherein at least a portion of the coupling member (120) is arranged in the recessed portion (111) and is limited by the recessed portion (111) in the direction (F) of the load force applied by the external member (200) to the coupling member (120).

2. The joint assembly (100) according to claim 1, characterized in that The body (110) is formed by a blow molding process, and the engaging piece (120) is embedded in the body (110) during the blow molding process of the body (110).

3. The joint assembly (100) according to claim 1 or 2, characterized in that: The projection of the portion of the engaging member (120) within the recess (111) on the first outer surface (S1) at least overlaps the projection of the opening (115) of the recess (111) on the first outer surface (S1) by a first width (W1).

4. The joint assembly (100) according to claim 3, characterized in that The recessed portion (111) has a side wall (113) and a bottom (112), and the side wall (113) is provided with an edge (114) extending parallel to the first outer surface at a position away from the bottom (112), and the edge (114) defines an opening (115) of the recessed portion (111).

5. The joint assembly (100) according to claim 3, characterized in that The recessed portion (111) has a side wall (113) and a bottom (112), and the side wall (113) is at least partially tapered in a direction away from the bottom (112).

6. The joint assembly (100) according to claim 3, characterized in that The engaging portion (121) is arranged in the recessed portion (111), and the engaging portion (121) is centrally arranged in the engaging member (120) and exposed through the opening (115).

7. The joint assembly (100) according to claim 3, characterized in that The body (110) has a first wall thickness (d1) in a portion other than the at least one region, and has a second wall thickness (d2) at least partially in the at least one region, the second wall thickness (d2) being greater than the first wall thickness (d1).

8. The joint assembly (100) according to claim 7, characterized in that The portion having the second wall thickness (d2) in the at least one region is located at a connection with the recessed portion (111).

9. The joint assembly (100) according to claim 7, characterized in that The first width (W1) is greater than the first wall thickness (d1).

10. The joint assembly (100) according to claim 7, characterized in that The engaging member (120) is provided with a flange (122) at a position away from the opening (115), and the flange (122) is covered by the side wall (113) of the recessed portion (111).

11. The joint assembly (100) according to claim 7, characterized in that The first outer surface (S1) is provided with a raised boss portion (116) at a position close to the opening (115).

12. The joint assembly (100) according to claim 4, characterized in that The body (110) has a second outer surface (S2) opposite to the first outer surface (S1), the bottom (112) is provided with a through hole (117) penetrating to the second outer surface (S2), and the external component (200) passes through the through hole (117) from the second outer surface (S2) to engage with the engaging portion (121) of the engaging member (120).

13. The joint assembly (100) according to claim 12, characterized in that The body (110) has a first wall thickness (d1), and the edge extends with a second width (W2), and the second width (W2) is less than or equal to the first wall thickness (d1).

14. The joint assembly (100) according to claim 13, characterized in that The second width (W2) is greater than or equal to 1 / 3 of the first wall thickness (d1) and less than or equal to 2 / 3 of the first wall thickness (d1).

15. The joint assembly (100) according to claim 1 or 2, characterized in that The portion of the engaging member (120) within the recessed portion (111) has a uniform cross-section and extends from the first outer surface (S1) along an extension direction (L), and wherein an angle between a direction (F) of a load force applied by the external component (200) on the engaging member (120) and the extension direction (L) is less than or equal to 90°.

16. The joint assembly (100) according to claim 1 or 2, characterized in that The engaging portion (121) comprises at least one of a threaded hole, a hook, and a buckle.

17. The joint assembly (100) according to claim 1 or 2, characterized in that The joint (120) is made of metal material.

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