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, the connecting pieces are distributed along the height direction of the frame main body, and at least one connecting piece is arranged at each of the top and the bottom of the frame main body; the elastic piece is connected between any two connecting pieces; wherein the elastic pieces are at least connected between the connecting pieces at the top and the bottom of the frame main body, the elastic pieces are used for supporting and being suitable for users with different weights, and if the user is heavy, the user leans on the elastic pieces to enable the deformation of the elastic pieces to be large, so that a great supporting effect is provided for the user, and the user has good experience; in addition, the elastic piece is connected between the top and the bottom of the backrest frame, so that the elastic piece can be suitable for supporting the backs of users of different body types, the application range is further widened, and better experience is provided for the users.

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 when users of different weights and body shapes lean on the backrest, the soft bag and the face cover give the users different user experiences, and some users have a poor user experience. Utility Model Content

[0004] In order to solve the above problems, the present application provides a backrest frame and a backrest, in which an elastic member is connected between the connecting members at the top and bottom of the backrest frame. The elastic force of the elastic member is used to support and adapt to users of different weights and to support the backs of users of different body shapes, thereby providing users with a better experience.

[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, and at least one connecting member is respectively arranged at the top and bottom of the frame body; an elastic member, which is connected between any two connecting members; wherein: the elastic member is connected between at least the connecting members at the top and bottom of the frame body.

[0007] By adopting the above technical solution, an elastic member is arranged on the backrest frame, and the elastic force of the elastic member is used to support and adapt to users of different weights. If the user is heavier, leaning on the elastic member causes the elastic member to deform more, thereby providing greater support to the user, so that the user has a better experience;

[0008] In addition, an elastic member is connected between the connecting members at the top and bottom of the backrest frame so that the elastic member can be suitable for the back support of users of different body shapes, further improving the scope of application and providing users with a better experience.

[0009] Optionally, the backrest frame includes at least two elastic members, and the elastic members are distributed along the width direction of the frame body.

[0010] By adopting the above technical solution, multiple elastic parts are distributed along the width direction of the frame body to adapt to large multi-person backrests, so that each position of the backrest can provide users with good back support effects, thereby improving user experience.

[0011] Optionally, the elastic member is a serpentine spring.

[0012] By adopting the above technical solution, the serpentine spring has high elasticity, large deformation ability and elastic recovery ability, which can provide the user with a better back support experience.

[0013] Optionally, the connecting member has a buckle strip for connecting the elastic member, and the buckle strip is detachably fixedly connected to the connecting member or is integrally formed.

[0014] By adopting the above technical solution, a buckle strip is provided on the connecting member to connect the elastic member. When the buckle strip and the connecting member are connected by a detachable fixed connection, it is convenient for replacement and maintenance. When the buckle strip and the connecting member are provided by an integral molding method, it is convenient for processing and production, and the assembly steps of the connecting member and the buckle strip are reduced.

[0015] Optionally, the buckle strip has a hanging portion for hanging the elastic member, and the hanging portion has a displacement margin for the elastic member to move along the height direction of the frame body.

[0016] By adopting the above technical solution, a hanging portion is provided on the buckle strip and has a displacement margin for the elastic member to move, so that the elastic member can stretch to both sides when it is squeezed by the user and elastically deformed, so that the elastic member deforms to better fit the user's back line, providing the user with a better experience.

[0017] 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.

[0018] 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.

[0019] 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 in a first direction perpendicular to the mounting member, and to limit the rotation of the connecting member relative to the mounting member around a first direction.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] The present application also discloses a backrest adopting the following technical solution:

[0026] A backrest comprises the backrest frame as described above.

[0027] By adopting the above technical solution, the above backrest frame is applied to the backrest, and matched with the face cover and soft bag to provide users with a better back support experience.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. In the present application, the elastic force of the elastic member is used to support and adapt to users of different weights. If the user is heavier, the elastic member will be deformed more when leaning on the elastic member, so as to provide greater support to the user and give the user a better experience. In addition, the elastic member is connected between the top and bottom of the backrest frame, so that the elastic member can be used to support the backs of users of different body shapes, further improving the scope of application and providing users with a better experience.

[0030] 2. In a further configuration of the present application, the buckle strip used to connect the elastic member has a displacement margin for the elastic member to move, so that the deformation of the elastic member can better fit the user's back, giving the user a better support experience;

[0031] 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

[0032] Figure 1 It is a three-dimensional structural schematic diagram of a backrest frame;

[0033] Figure 2 It is a schematic diagram of a three-dimensional structure of an elastic member connected between two connecting members, wherein a through hole is opened on the buckle strip in the connecting member to connect the elastic member;

[0034] Figure 3 yes Figure 2 Explosion diagram of

[0035] Figure 4 yes Figure 2 A side view schematic diagram and a partial enlarged schematic diagram;

[0036] Figure 5 It is a schematic diagram of a three-dimensional structure of an elastic member connected between two connecting members, wherein a through groove is provided on the buckle strip in the connecting member to connect the elastic member;

[0037] Figure 6 yes Figure 5 Explosion diagram of

[0038] Figure 7 yes Figure 5 A side view schematic diagram and a partial enlarged schematic diagram;

[0039] Figure 8 It is a side view schematic diagram and a partial enlarged schematic diagram of the connection between the first connecting member and the second connecting member on the mounting member;

[0040] Fig. 9 is a schematic diagram of the three-dimensional structure of the backrest frame after the third connecting member and the back plate are installed;

[0041] Fig.10 It is a schematic diagram of the three-dimensional structure after the face cover and the soft bag are installed on the backrest frame;

[0042] Fig.11 yes Fig.10 Schematic diagram of the back three-dimensional structure.

[0043] Explanation of the accompanying drawings: 1. Frame body; 11. Mounting part; 111. Abutment part; 21. Connecting part; 211. First connecting part; 212. Second connecting part; 213. Buckle strip; 214. Hanging part; 2141. Through hole; 2142. Through groove; 2143. Anti-slip part; 215. Third connecting part; 22. Back plate; 3. Face cover; 4. Soft bag; 5. Connector; 6. Socket; 8. Connecting hole; 9. Elastic part; 10. Countersunk hole. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] The following is combined with Figure 1-11 This application is described in further detail.

[0049] The present application embodiment discloses a backrest frame, as shown in the attached Figure 1 As shown, it includes a frame body 1, a connecting member 21 and an elastic member 9. Specifically, at least two connecting members 21 are provided and distributed along the height direction of the frame body 1, which can improve the structural strength of the entire frame body 1, wherein: at least one connecting member 21 is provided at the top and the bottom of the frame body 1, respectively, and the elastic member 9 can be connected between any two connecting members 21 and at least the elastic member 9 is connected between the connecting members 21 at the top and the bottom of the frame body 1, so that the elastic member 9 can cover the entire frame body 1 at least in the height direction. When used for leaning, the connecting member 21 at the top of the frame body 1 can support the user's head, the connecting member 21 at the bottom of the frame body 1 can support the user's buttocks, and the elastic member 9 can support the user's entire back as much as possible, giving the user a better use experience.

[0050] At least two elastic members 9 are provided, and the elastic members 9 are distributed along the width direction of the frame body 1. The widths of backrest frames of different sizes and models are different. For example, the width of the backrest frame on a multi-person sofa will be larger than the backrest frame on a single sofa. The number of elastic members 9 can be reasonably set according to the width size of the frame body 1, so that the user can lean on the elastic member 9 at any position in the width direction of the backrest frame for back support. When multiple people use it, each user can have a better experience. Each elastic member 9 is relatively independent, so that the back support effect for each user is different.

[0051] In this embodiment, five elastic members 9 are arranged along the width direction of the frame body 1, and a serpentine spring with high elasticity, large deformation ability and elastic recovery ability is adopted, which can provide a better back support experience for the user.

[0052] In a further setting, combined with the Figure 2 To Attachment Figure 4 The connecting member 21 has a buckle strip 213 for connecting the elastic member 9, and the buckle strip 213 and the connecting member 21 are detachably fixedly connected or integrally formed. When the buckle strip 213 and the connecting member 21 are detachably fixedly connected, replacement and maintenance are convenient; when the buckle strip 213 and the connecting member 21 are integrally formed, the assembly steps of the buckle strip 213 and the connecting member 21 are reduced, and the assembly efficiency of the backrest frame is improved. It should be noted that the integral forming mentioned above means that the buckle strip 213 and the connecting member 21 are inseparable, such as directly forming the connecting member 21 and the buckle strip 213 by extrusion molding during the production process, or the buckle strip 213 and the connecting member 21 can be fixed into one by welding or other methods after the buckle strip 213 and the connecting member 21 are produced separately.

[0053] In this embodiment, the buckle strip 213 is plugged and installed with the connecting member 21 along the length direction of the connecting member 21, and the buckle strip 213 has a hanging portion 214 for hanging the elastic member 9, and the hanging portion 214 has a displacement margin for the elastic member 9 to move along the height direction of the frame body 1. Specifically, the hanging portion 214 and the buckle strip 213 can be produced by an integral extrusion molding method, or can be fixed by welding, gluing, etc., or can be processed by punching and other processing methods.

[0054] In this embodiment, a through hole 2141 is provided on the hanging portion 214 to pass the end of the elastic member 9. The cross section of the through hole 2141 is in the shape of a strip, so that the end of the elastic member 9 can move in the through hole 2141 to adapt to the deformation of the elastic member 9. Specifically, when the elastic member 9 is subjected to the squeezing force F from the user's back, the elastic member 9 will be deformed. If the end of the elastic member 9 is fixed to the buckle strip 213, the elastic member 9 needs to overcome the force applied by the user's back through its own deformation. At this time, the deformation of the elastic member 9 will not fit the user's back line, giving the user a poor user experience; when the end of the elastic member 9 moves, the elastic member 9 will decompose the force into a force F' on its end, and overcome the deformation by stretching the elastic member 9, so that the elastic member 9 fits the user's back line better, giving the user a better user experience.

[0055] In another embodiment, the Figure 5 To Attachment Figure 7 A through groove 2142 is provided on the hanging portion 214 for hanging the end of the elastic member 9, which makes installation more convenient. An anti-slip portion 2143 is provided at the notch of the through groove 2142 to reduce the possibility of the elastic member 9 falling off and improve the structural reliability, wherein: the displacement margin for the movement of the end of the elastic member 9 is reflected between the anti-slip portion 2143 and the bottom of the through groove 2142.

[0056] For the frame body 1, combined with the attached Figure 8 , including two mounting members 11, a connecting member 21 is fixedly installed 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 the first direction.

[0057] In this embodiment, two connecting members 21 are provided and are arranged at the top and bottom of the frame body 1. 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 are both against the connecting member 21 to limit the movement of the connecting member 21 in the left and right directions.

[0058] 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.

[0059] 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.

[0060] Implementation method 1:

[0061] 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.

[0062] 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.

[0063] Implementation method 2:

[0064] The mounting member 11 and the connecting member 21 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 21 relative to the mounting member 11 along the first 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, 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.

[0065] It should be noted that: the latch, as a kind of fastener, uses 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 prevent the connecting member 21 from rotating relative to the mounting member 11 after the latch is inserted and fastened.

[0066] Implementation method three:

[0067] 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.

[0068] 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.

[0069] 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 be cylindrically plugged according to actual conditions, and the fastener may also be a cylindrical pin. Combining two or more of the three embodiments may overly restrict the degree of freedom of the connector 21, thereby ensuring the stability of the connector 21 and the connection reliability.

[0070] For the convenience of distinction and explanation, the connecting member 21 located at the top of the frame body 1 is called the first connecting member 211 , and the connecting member 21 located at the bottom of the frame body 1 is called the second connecting member 212 .

[0071] In this embodiment, the first connecting member 211 and the second connecting member 212 both adopt a combination of the above three implementation modes to limit the degree of freedom. Specifically, the left and right ends of the connecting member 21 are respectively abutted against the two mounting members 11, a socket 6 is provided on the connecting member 21, and a connector 5 connected with the socket 6 is provided on the mounting member 11, and the connector 5 is in contact with the positive and negative side walls of the socket 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 connecting member 21 along the Y direction and the Z direction and the rotation around the X direction; the fastener is a bolt, a connecting hole 8 is provided on the connecting member 21, and a countersunk hole 10 is provided on the mounting member 11, the connecting hole 8 and the countersunk hole 10 are opposite to each other along the X direction, and the bolt is installed in the connecting hole 8 from the X direction to fasten and install the connecting member 21 and the mounting member 11, the countersunk hole 10 is convenient for hiding the bolt, and the movement of the connecting member 21 along the Y direction and the Z direction is limited; the abutting portion 111 is adapted to the outer contour of the connecting member 21, and can abut the positive and negative side surfaces of the connecting member 21 along the Y direction and the reverse side surface of the Z direction, so as to further limit the degree of freedom of the connecting member 21.

[0072] 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.

[0073] The present application also discloses a backrest, combined with an attached Fig. 9 To Attachment Fig.11, including the above-mentioned backrest frame. In this embodiment, the outer periphery of the backrest frame is covered with the face cover 3, a third connecting member 215 is arranged in the middle of the backrest frame, and a back plate 22 is arranged between the third connecting member 215 and the first connecting member 211 to support the back of the face cover 3, a soft bag 4 is arranged on the front of the face cover 3 and an elastic member 9 is supported on the inner side of the front of the face cover 3. The three supports of the soft bag 4, the face cover 3 and the elastic member 9 provide a better support effect for the user's back, thereby improving the user's experience.

[0074] 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), and at least one connecting member (21) being provided at the top and the bottom of the frame body (1); an elastic member (9) being connected between any two of the connecting members (21); wherein: the elastic member (9) is connected between at least the connecting members (21) at the top and the bottom of the frame body (1).

2. The backrest frame according to claim 1, characterized in that: The backrest frame comprises at least two elastic members (9), and the elastic members (9) are distributed along the width direction of the frame body (1).

3. The backrest frame according to claim 1, characterized in that: The elastic member (9) is a serpentine spring.

4. The backrest frame according to claim 1, characterized in that The connecting member (21) has a buckle strip (213) for connecting to the elastic member (9), and the buckle strip (213) is detachably fixedly connected to the connecting member (21) or is integrally formed with the connecting member (21).

5. The backrest frame according to claim 4, characterized in that: The buckle strip (213) has a hanging portion (214) for hanging the elastic member (9), and the hanging portion (214) has a displacement margin for the elastic member (9) to move along the height direction of the frame body (1).

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.

Images