Backrest frame and backrest

Abstract

The utility model relates to a backrest frame and a backrest, and relates to the technical field of furniture, the backrest frame comprises a frame main body, the frame main body is provided with at least two connecting pieces, and the connecting pieces are distributed in the height direction of the frame main body; the structural part is detachably mounted on the connecting part; the surface sleeve is fixedly connected between the structural parts on any two connecting parts; when the face cover is tensioned, the acting force applied to the structural part can enhance the connecting strength of the structural part and the connecting part, the structural part is connected with the face cover and installed on the connecting part, connection of the face cover and the backrest frame is completed, and the acting force applied to the face cover when the face cover is tensioned can enhance the connecting strength between the structural part and the connecting part. The surface sleeve is kept tensioned while the anti-falling effect is guaranteed, and good use experience is brought to a user.

Description

Technical Field

[0001] The present application relates to the field of furniture, and in particular to a backrest frame and a backrest. Background Art

[0002] With the development of the furniture industry, people have higher and higher requirements for the installation and use of furniture. In the existing soft furniture such as sofas and chairs, in order to improve the user's comfort, a cover is often put on the backrest and a soft bag is set.

[0003] With respect to the above-mentioned related technologies, the inventors found that the tension of the existing backrest cover deteriorates after installation and use, and it is easy to wrinkle or even fall off, which gives users a poor experience. Utility Model Content

[0004] In order to solve the above problems, the present application provides a backrest frame and a backrest, wherein structural parts are installed on the connecting parts of the frame body, and face covers are connected between the structural parts. The tensioning force of the face covers can make the connection between the structural parts and the connecting parts tighter, thereby ensuring the tensioning effect of the face cover and the anti-slip effect between the structural parts and the connecting parts.

[0005] The backrest frame provided in this application adopts the following technical solution:

[0006] A backrest frame comprises: a frame body, on which are at least two connecting members, which are distributed along the height direction of the frame body; a structural member, which is detachably mounted on the connecting member; a face cover, which is fixedly connected between the structural members on any two connecting members; wherein: the force applied to the structural member when the face cover is tensioned can enhance the connection strength between the structural member and the connecting member.

[0007] By adopting the above technical solution, the structural parts and the connecting parts can be installed detachably. The force applied to the structural parts when the face cover is tensioned can enhance the connection strength between the structural parts and the connecting parts, thereby reducing the risk of the structural parts and the connecting parts falling off, that is, reducing the situation of the face cover falling off. At the same time, it can ensure the tensioning effect of the face cover, reduce the wrinkles of the face cover, and give users a better user experience.

[0008] Optionally, the structural parts are formed by PP plastic extrusion.

[0009] By adopting the above technical solution, the structural parts are extruded from PP plastic, and the production and manufacturing are simple and convenient.

[0010] Optionally, the structural member is plug-connected to the connecting member and the structural member is R-shaped.

[0011] By adopting the above technical solution, the R-shaped structural member is convenient for plugging and connecting with the connecting member, and the installation is convenient and quick.

[0012] Optionally, the connecting member has mounting ribs for the structural member to be plugged into.

[0013] By adopting the above technical solution, the installation ribs are arranged to facilitate the plugging of structural parts, and the installation is convenient and quick.

[0014] Optionally, the height of the mounting rib is greater than 20 mm.

[0015] By adopting the above technical solution, the height of the mounting rib is greater than 20 mm, so as to ensure that the structural member has sufficient depth for insertion, to ensure the connection strength and connection reliability between the structural member and the connecting member, and to tighten the face cover.

[0016] Optionally, the frame body includes two mounting members, and the connecting member is fixedly mounted between the two mounting members and abuts against the two mounting members to limit movement of the connecting member relative to the mounting members along the first direction.

[0017] By adopting the above technical solution, the connecting member is fixedly installed between the two mounting members and abuts against the mounting members to limit the movement of the connecting member along the first direction, wherein the connecting member abuts against the mounting member, and the first direction is the vertical direction of the abutting surface of the connecting member and the mounting member, thereby increasing the restriction on the degree of freedom of the connecting member, thereby improving the stability and reliability of the connection, and reducing the shaking of the connecting member during use.

[0018] Optionally, the mounting member has a connector and the connecting member has a socket for plugging the connector, or the connecting member has a connector and the mounting member has a socket for plugging the connector; wherein: the mounting member and the connecting member are plugged into each other to limit the movement of the connecting member relative to the mounting member along a first direction perpendicular to the mounting member, and to limit the rotation of the connecting member relative to the mounted member around a first direction.

[0019] By adopting the above technical solution, the mounting member and the connecting member are connected by the plug-in fit between the connector and the socket, and the plug-in fit limits the movement of the connecting member relative to the mounting member along a first direction perpendicular to the first direction and the rotation around the first direction, thereby further improving the restriction on the degree of freedom of the connecting member and enhancing the connection stability and reliability.

[0020] Optionally, the mounting member and the connecting member are fixedly connected by a fastener, wherein: the connection direction of the fastener is consistent with the first direction, so as to limit the movement of the connecting member relative to the mounting member along a direction perpendicular to the first direction, and to limit the rotation of the connecting member relative to the mounting member around the first direction.

[0021] By adopting the above technical solution, the mounting member and the connecting member are connected by a fastener, and the connection direction of the fastener is consistent with the first direction, so that the fastener can limit the movement of the connecting member relative to the mounting member along the first direction perpendicular to the first direction and the rotation around the first direction, thereby further improving the restriction on the degree of freedom of the connecting member and improving the connection stability and reliability.

[0022] Optionally, the mounting member further has an abutment portion abutting against the connecting member to limit the movement of the connecting member relative to the mounting member along a first direction perpendicular to the mounting member, and to limit the rotation of the connecting member relative to the mounting member around the first direction.

[0023] By adopting the above technical solution, an abutment portion is provided to limit the movement of the connecting member in a first direction perpendicular to the first direction and the rotation around the first direction through an abutment action, thereby further improving the restriction on the degree of freedom of the connecting member and improving the connection stability and reliability.

[0024] The present application also discloses a backrest adopting the following technical solution:

[0025] A backrest comprises the backrest frame as described above.

[0026] By adopting the above technical solution and applying the above backrest frame to the backrest, wrinkles and falling off of the cover can be reduced, giving users a better use experience.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. In this application, the face cover is connected to the backrest frame by connecting the face cover with a structural member and installing it on the connecting member. The force applied when the face cover is tightened can enhance the connection strength between the structural member and the connecting member, thereby ensuring the anti-slip effect and keeping the face cover tightened, giving users a better use experience.

[0029] 2. In a further configuration of the present application, the connector has a mounting rib of a certain height, which facilitates the insertion of the structural member and ensures the reliability of the connection between the structural member and the connector, and ensures the tightening effect of the face cover;

[0030] 3. In a further configuration of the present application, the connector is connected to the mounting member, and the degree of freedom of the connector is restricted by plugging, fastener connection, abutment, etc., thereby improving the connection stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure after the backrest frame is covered with a cover;

[0032] Figure 2 yes Figure 1 A schematic diagram of the back three-dimensional structure of;

[0033] Figure 3 It is a three-dimensional structural diagram of the backrest frame;

[0034] Figure 4 It is a schematic diagram of the side view structure in which the force exerted by the face cover on the structural member can make the structural member and the connecting member closer;

[0035] Figure 5It is a schematic diagram of the side view structure in which the force of the face cover on the structural member causes the structural member and the connecting member to fall off;

[0036] Figure 6 is an exploded schematic diagram of a mounting member, a first connecting member, and a second connecting member;

[0037] Figure 7 yes Figure 3 A side structural schematic diagram and a partial enlarged schematic diagram;

[0038] Figure 8 It is a side view schematic diagram and a partial enlarged schematic diagram of the mounting part;

[0039] Fig. 9 yes Figure 1 Schematic diagram of the three-dimensional structure after the soft package is installed.

[0040] Explanation of the accompanying drawings: 1. Frame body; 11. Mounting part; 111. Abutment portion; 21. Connecting part; 211. First connecting part; 212. Second connecting part; 213. Mounting rib; 215. Third connecting part; 22. Back plate; 23. Structural part; 3. Face cover; 4. Soft bag; 5. Connector; 6. Socket; 7. Fastener; 8. Connecting hole; 9. Elastic part; 10. Countersunk hole. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0045] The following is combined with Figure 1-9 This application is described in further detail.

[0046] The present application embodiment discloses a backrest frame, as shown in the attached Figure 1 To Attachment Figure 3 As shown, it includes a frame body 1, connecting parts 21, structural parts 23 and a face cover 3. The frame body 1 has at least two connecting parts 21, and the connecting parts 21 are distributed along the height direction of the frame body 1. The structural parts 23 are detachably installed on the connecting parts 21. The face cover 3 is fixedly connected between the structural parts 23 on any two connecting parts 21 to cover the frame body 1. The covering position and covering surface can be customized according to the actual needs of the user, and the face cover 3 is sewn to the structural parts 23 by sewing method.

[0047] Combined with Figure 4 , Attachment Figure 5 When the cover 3 is tightened, the force applied to the structural member 23 can enhance the connection strength between the structural member 23 and the connecting member 21, which can not only ensure the connection reliability between the structural member 23 and the connecting member 21, but also ensure the tightening effect of the cover 3. Figure 4 The structure and attachment Figure 5 Compared with the structure in the attached Figure 4 In the embodiment, the force F exerted by the cover 3 on the structural member 23 can make the structural member 23 and the connecting member 21 more tightly connected; Figure 5 In the embodiment, the force F exerted by the face cover 3 on the structural member 23 will drive the structural member 23 to separate from the connecting member 21, which not only poses a risk of the structural member 23 falling off, but also causes the face cover 3 to loosen and wrinkle.

[0048] It should be noted that the force direction of F does not need to be completely consistent with the connection direction between the structural member 23 and the connecting member 21 , and F only needs to have a component force in the connection direction between the structural member 23 and the connecting member 21 .

[0049] The structural member 23 is formed by extrusion of PP (polypropylene) plastic and is in an R-shape as a whole, which is convenient for plugging and connecting with the connector 21. It should be noted that, compared with the complete "R" shape, the middle part of the "R" shape is fixed so that the "R" head forms a closed space, and the structural member 23 is not fixed on both sides of the middle part so that the "R" head of the structural member 23 is open, thereby ensuring the plug-in depth of the structural member 23 and the connector 21.

[0050] In addition, the structural member 23 is extruded from PP plastic and has a certain elasticity. When the structural member 23 is plugged into the connecting member 21, the connecting member 21 expands the R-shape of the structural member 23 and is clamped onto the connecting member 21 under the elasticity of the structural member 23 itself, so as to improve the connection effect.

[0051] The connector 21 has a mounting rib 213 for the structural member 23 to be inserted therein. The height of the mounting rib 213 is greater than 20 mm to ensure that there is sufficient insertion depth between the structural member 23 and the connector 21 . The mounting rib 213 can be integrally formed with the connector 21 .

[0052] In this embodiment, two connecting members 21 are provided and are respectively referred to as a first connecting member 211 and a second connecting member 212. The first connecting member 211 is installed in the middle of the height direction of the frame body 1, and the second connecting member 212 is installed at the bottom of the height direction of the frame body 1. The structural member 23 on the first connecting member 211 is plugged into the upper end of the first connecting member 211, and the structural member 23 on the second connecting member 212 is plugged into the lower end of the second connecting member 212. The face cover 3 is fixed between the two structural members 23, and the covering path of the face cover 3 is: from the second connecting member 211 to the upper end of the second connecting member 212. The structural member 23 on the connecting member 212 extends downward, goes around from the bottom of the second connecting member 212 to the front of the frame body 1, then goes around from the top of the frame body 1 to the back of the frame body 1, and then goes around from the back of the first connecting member 211 to the structural member 23 on the first connecting member 211 and is connected thereto, wherein: the face cover 3 has an 80° turning angle when going from the bottom of the second connecting member 212 to the front of the frame body 1, and has a 20° turning angle when going from the back of the first connecting member 211 to the structural member 23, so that the worker can tighten the face cover 3 when installing the face cover 3.

[0053] Combined with Figure 6 To Attachment Figure 8 The frame body 1 includes two mounting members 11, a connecting member 21 is fixedly mounted between the two mounting members 11 to form a backrest frame, and the connecting member 21 abuts against the mounting member 11 to limit the movement of the connecting member 21 relative to the mounting member 11 along a first direction. In this embodiment, the left and right ends of the connecting member 21 are respectively fixedly connected to the two connecting members 21, and the left and right ends of the connecting member 21 abut against the connecting member 21 to limit the movement of the connecting member 21 in the left and right directions.

[0054] Further explanation: the left and right direction of the backrest frame is the X direction, the up and down direction is the Z direction, and the front and back direction is the Y direction, wherein the X direction is the first direction, and the abutment between the connecting member 21 and the mounting member 11 can limit the freedom of movement of the connecting member 21 along the X direction and the freedom of rotation around the Y direction and the Z direction, so as to ensure the stability and reliability of the connection between the connecting member 21 and the mounting member 11.

[0055] In addition, the following three implementation modes are specifically provided for further setting of the movement freedom of the connecting member 21 along the Y direction and the Z direction and the rotation freedom around the X direction, which can further improve the stability and reliability of the connecting structure.

[0056] Implementation method 1:

[0057] The mounting member 11 has a plug-in member 5 and the connecting member 21 has a socket 6 for plugging in the plug-in member 5, or the connecting member 21 has a plug-in member 5 and the mounting member 11 has a socket 6 for plugging in the plug-in member 5, wherein: the plug-in fit between the mounting member 11 and the connecting member 21 is used to limit the movement of the connecting member 21 relative to the mounting member 11 along a first direction perpendicular to the mounting member 11, and to limit the rotation of the connecting member 21 relative to the mounting member 11 around a first direction, that is, through the plug-in fit to limit the movement of the connecting member 21 relative to the mounting member 11 along the Y direction and the Z direction, and at the same time limit the rotation of the connecting member 21 around the X direction, thereby cooperating with the abutment between the connecting member 21 and the mounting member 11 to limit the six degrees of freedom of the connecting member 21.

[0058] It should be noted that the plug-in component 5 and the plug-in hole 6 are generally not cylindrical, so as to prevent the connecting component 21 from easily rotating relative to the mounting component 11 after plugging.

[0059] Implementation method 2:

[0060] The mounting member 11 and the connecting member 21 are fixedly connected by a fastener 7, wherein the connection direction of the fastener 7 is consistent with the first direction, so as to limit the movement of the connecting member 21 relative to the mounting member 11 along the first direction perpendicular to the first direction, and limit the rotation of the connecting member 21 relative to the mounting member 11 around the first direction, and also cooperate with the abutment effect of the connecting member 21 and the mounting member 11 to limit the six degrees of freedom of the connecting member 21.

[0061] It should be noted that: the latch, as a kind of fastener 7, adopts an interference fit to fasten the connecting member 21 and the mounting member 11. In the implementation method, the latch is generally not cylindrical to avoid the connecting member 21 from rotating relative to the mounting member 11 after the latch is inserted and fastened.

[0062] Implementation method three:

[0063] The mounting member 11 further has an abutting portion 111 abutting against the connecting member 21 , thereby limiting the movement of the connecting member 21 relative to the mounting member 11 along a first direction perpendicular to the connecting member 21 and limiting the rotation of the connecting member 21 relative to the mounting member 11 around the first direction.

[0064] It should be noted that the abutment portion 111 needs to abut and restrict the connector 21 in four directions, namely, the positive and negative directions in the Y direction and the positive and negative directions in the Z direction, and cooperate with the abutment between the connector 21 and the mounting member 11 to restrict the six degrees of freedom of the connector 21.

[0065] In other embodiments, any two or three of the above three embodiments may be combined for application. When more than two embodiments are combined for application, the connector 5 and the socket 6 may adopt cylindrical plug-in according to actual conditions, and the fastener 7 may also adopt cylindrical pin. The combination of two or more of the three embodiments may over-restrict the degree of freedom of the connector 21, thereby ensuring the stability of the connector 21 and the connection reliability.

[0066] In this embodiment, the first connecting member 211 adopts a combination of the second embodiment and the third embodiment to limit the degree of freedom. Specifically, the fastener 7 adopts a bolt, and a connecting hole 8 is opened on the first connecting member 211. The bolt is installed in the connecting hole 8 from the X direction, and the first connecting member 211 and the mounting member 11 are fastened and installed, and the movement of the first connecting member 211 in the Y direction and the Z direction is limited; the abutment portion 111 is adapted to the outer contour of the first connecting member 211, and can abut the reverse side of the first connecting member 211 in the Y direction and the positive side of the Z direction, so as to further limit the degree of freedom of the first connecting member 211.

[0067] The second connecting member 212 adopts a combination of the above three implementation methods to limit the degree of freedom. Specifically, the left and right ends of the second connecting member 212 are respectively abutted against the two mounting members 11, a plug hole 6 is provided on the second connecting member 212, and a plug connector 5 plugged into the plug hole 6 is provided on the mounting member 11. The plug connector 5 contacts the positive and negative side walls of the plug hole 6 along the Y direction and the positive and negative side walls along the Z direction, so as to achieve the purpose of limiting the movement of the second connecting member 212 in the Y direction and the Z direction and the rotation around the X direction; the fastener 7 adopts a bolt, a connecting hole 8 is provided on the second connecting member 212, and a plug connector 5 is provided on the mounting member 11 to connect the plug hole 6. A countersunk hole 10 is opened, and the connecting hole 8 is opposite to the countersunk hole 10 along the X direction, and a bolt is installed in the connecting hole 8 from the X direction to fasten and install the second connecting member 212 and the mounting member 11. The countersunk hole 10 is convenient for hiding the bolt and restricting the movement of the second connecting member 212 along the Y direction and the Z direction; the abutment portion 111 is adapted to the outer contour of the second connecting member 212, and can abut the positive and negative sides of the second connecting member 212 along the Y direction and the reverse side of the Z direction, thereby further restricting the freedom of the second connecting member 212.

[0068] In addition, the connector 21 is produced by an extrusion molding process, and its socket 6 can be formed by the extrusion process. In this embodiment, the socket 6 passes through the connector 21 along the X direction; the mounting member 11 is produced by a blow molding process, and its plug-in member 5 imitates the inner wall contour of the socket 6 in the connector 21, and the abutment portion 111 imitates the outer contour of the connector 21 to improve the degree of plug-in adaptation and abutment adaptation between the mounting member 11 and the connector 21. It should be noted that: the plug-in member 5 imitating the inner wall contour of the socket 6 does not mean that the plug-in member 5 needs to completely abut against the inner wall of the socket 6 when it is inserted into the socket 6, but it only needs to satisfy the limitation of the movement of the connector 21 along the Y direction and the Z direction.

[0069] The present application also discloses a backrest, Fig. 9 In this embodiment, a third connecting member 215 is fixedly installed on the top of the frame body 1. The third connecting member 215 is fixedly connected to the mounting member 11 using the above three embodiments. The third connecting member 215 can support the face cover 3 when it is wrapped from the front to the back of the frame body 1.

[0070] In addition, a back plate 22 is installed between the third connecting member 215 and the first connecting member 211 to support the inner side of the back side of the face cover 3. An elastic member 9 is connected between the third connecting member 215 and the second connecting member 212 to support the inner side of the front side of the face cover 3. A soft bag 4 can be placed or installed on the front side of the face cover 3, giving the user a better usage experience.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A backrest frame, characterized in that: include: A frame body (1), the frame body (1) having at least two connecting members (21), the connecting members (21) being distributed along the height direction of the frame body (1); a structural member (23) being detachably mounted on the connecting members (21); and a face cover (3) being fixedly connected between the structural members (23) on any two of the connecting members (21); wherein: when the face cover (3) is tensioned, the force applied to the structural member (23) can enhance the connection strength between the structural member (23) and the connecting member (21).

2. The backrest frame according to claim 1, characterized in that: The structural member (23) is formed by extrusion of PP plastic.

3. The backrest frame according to claim 1, characterized in that: The structural member (23) is plug-connected to the connecting member (21) and the structural member (23) is R-shaped.

4. The backrest frame according to claim 1, characterized in that The connecting member (21) is provided with a mounting rib (213) for plugging the structural member (23).

5. The backrest frame according to claim 4, characterized in that: The height of the mounting rib (213) is greater than 20 mm.

6. The backrest frame according to claim 1, characterized in that: The frame body (1) comprises two mounting members (11), and the connecting member (21) is fixedly mounted between the two mounting members (11) and abuts against the two mounting members (11) to limit movement of the connecting member (21) relative to the mounting members (11) along a first direction.

7. The backrest frame according to claim 6, characterized in that The mounting member (11) has a plug-in member (5) and the connecting member (21) has a socket (6) for plugging the plug-in member (5), or the connecting member (21) has a plug-in member (5) and the mounting member (11) has a socket (6) for plugging the plug-in member (5); wherein: the plug-in fit between the mounting member (11) and the connecting member (21) is used to restrict the movement of the connecting member (21) relative to the mounting member (11) in a first direction perpendicular to the mounting member (11), and to restrict the rotation of the connecting member (21) relative to the mounting member (11) around a first direction.

8. The backrest frame according to claim 6, characterized in that The mounting member (11) and the connecting member (21) are fixedly connected via a fastener (7), wherein the connection direction of the fastener (7) is consistent with a first direction, so as to limit the movement of the connecting member (21) relative to the mounting member (11) in a direction perpendicular to the first direction, and to limit the rotation of the connecting member (21) relative to the mounting member (11) around the first direction.

9. The backrest frame according to claim 6, characterized in that: The mounting member (11) also has an abutment portion (111) abutting against the connecting member (21) so as to limit the movement of the connecting member (21) relative to the mounting member (11) along a first direction perpendicular to the connecting member (21), and to limit the rotation of the connecting member (21) relative to the mounting member (11) around the first direction.

10. A backrest, characterized in that: The utility model comprises a backrest frame as claimed in any one of claims 1 to 9.

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