Chair back mounting structure, chair back and leisure chair

Abstract

The utility model relates to the technical field of furniture structures, and particularly discloses a chair back mounting structure, a chair back thereof and a leisure chair. The mounting structure comprises a mounting part and a butt joint part, wherein the mounting part comprises a plurality of sleeving fixing pieces; the butt joint part comprises a plurality of butt joint rods; the plurality of sleeving fixing pieces are matched with the plurality of butt joint rods, and after the chair back is installed, the plurality of sleeving fixing pieces are fixedly arranged on the butt joint ends of the plurality of butt joint rods in a sleeving manner. The chair back mounting structure has the beneficial effects that on one hand, the chair back is convenient to mount, and meanwhile, under the mounting structure, the phenomenon that the service life of the chair back is shortened due to the wear of the mounting structure is avoided; and on the other hand, even if the original mounting structure is worn too much and is difficult to use, the whole service life of the chair back or the leisure chair can be prolonged by simply replacing parts or replacing parts, the durability of the chair back or the leisure chair is improved, and the popularization and the use of the product are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture structures, in particular to a chair back mounting structure and a chair back and a leisure chair. Background Art

[0002] A leisure chair is a chair that users usually use to enjoy their leisure time. Among them, the backrest is one of the important components of a leisure chair. Usually, the top height of the backrest of a leisure chair is around the waist of most users. While ensuring the basic support effect for the user, some space is reserved for the user to adjust the posture and relax the body.

[0003] However, in the long-term use of existing leisure chairs on the market, the backrest connection structure is prone to damage. In general, when the backrest connection structure is damaged, the backrest will be misaligned, thus affecting the user's experience; and in most leisure chairs on the market, when the backrest connection structure is damaged, the structure used to connect the backrest on the leisure chair body will also be damaged, which ultimately makes it difficult to restore the normal use of the leisure chair even if the backrest and the connection structure thereon are replaced, thus affecting the service life of the leisure chair. Utility Model Content

[0004] The utility model provides a chair back installation structure, which reduces the degree of damage to the connection structure during long-term use of the leisure chair, thereby ensuring that the leisure chair has a long service life; at the same time, after the connection structure is damaged, it will not cause damage to the main body of the leisure chair, so after the chair back is replaced, the normal use of the leisure chair can be guaranteed.

[0005] The utility model is realized through the following technical solutions.

[0006] A chair back mounting structure, characterized in that it comprises:

[0007] The mounting part is fixedly arranged on the mounting surface of the chair back and includes a plurality of set fixing parts;

[0008] The docking part is fixedly mounted on the main body of the chair and includes a plurality of docking rods;

[0009] The mounting portion is matched with the docking portion so that the chair back is mounted on the main body of the chair, wherein the number and position of the set fixings match the number and position of the docking rods. Specifically, when the chair back is installed, a set fixing is mounted on the docking end of any docking rod.

[0010] The size and shape of the inner cavity of the set fixing piece match the size and shape of the docking rod. Specifically, if the cross-section of the docking rod is circular, the cross-section of the inner cavity of the set fixing piece is also circular, and when the seat back is installed, the inner wall of the inner cavity fits tightly with the docking end.

[0011] So that after the seat back is installed, the plurality of set fixing parts are all set and fixed on the docking ends of the plurality of docking rods. The docking end refers to the entire portion of the docking rod that is set and wrapped by the set fixing parts when the seat back is installed.

[0012] The inventor has found through observation and statistics that the height setting of the backrest of the leisure chair is related to the waist height of most users. When most users lean on it, the backrest only provides support around the waist of the user, but does not involve the higher parts of the user such as the back. The main reason for this choice is that when using a leisure chair, most users are in a relaxed state and have a wide variety of body postures. If the backrest is set high, it is easy to block the user's shoulders, back, etc., which is not conducive to the user adjusting to a more comfortable and relaxed sitting posture.

[0013] When the chair back is set at the above height, when the user sits upright and leans against the chair back, the waist will exert some downward pressure on the chair back; at the same time, in most use scenarios of leisure chairs, the user's sitting posture is more casual and changeable, and the leaning on the chair back is not limited to the waist. For example, the inventor may sit sideways and put his arm on the top of the chair back, and lean back on the chair back. In many cases, the direction of the pressure applied by the user to the chair back is very variable.

[0014] In the above situation, the direction of the pressure on the mounting structure of the chair back is also relatively variable, and it is easy to be damaged during long-term use. In particular, such as the more traditional screw and nut mounting structure. Under this mounting structure, it is necessary to open a through hole on the corresponding docking rod, and then after the threaded portion of the screw passes through the through hole, it is tightened with the nut to complete the installation of the chair back. This mounting structure mainly produces a fixing effect on the chair back through the mutual interference between the threaded portion of the screw and the through hole. However, under the above-mentioned pressure conditions, friction will often occur between the threaded portion and the through hole, which will eventually easily lead to wear of the through hole, and then the fixation of the chair back will no longer be firm. After the through hole is worn, since the size of the threaded portion still needs to match the nut, and the nut is usually directly fixed on the chair back, it is difficult to replace it, so it is impossible to replace the screw to make the mounting structure work normally again. Furthermore, the damage and difficulty of repairing the mounting structure will inevitably affect the service life of the leisure chair.

[0015] The inventor has designed the chair back installation structure of the utility model after summarizing the above situation. When the set fixing piece is set on the butt end, the chair back is subjected to pressure from various directions, and the main wear and tear is generated in the inner cavity and butt end of the set fixing piece. The main reason is that the inner cavity or butt end of the set fixing piece is worn and deformed, and no longer fits tightly, resulting in the chair back being not firmly installed.

[0016] However, if the inner cavity of the set fixing is severely worn and the chair back is not installed securely, the installation structure can be restored to work by filling the gap caused by the wear by filling the material inside the set fixing. Even when the set fixing is too severely worn, the chair back can be replaced to restore the normal operation of the leisure chair as a whole, thereby increasing the overall service life of the leisure chair.

[0017] If the butt end is worn or deformed, a chair back with a set of fixings of other sizes can be selected for replacement. If the set fixings of part of the chair back are longer in the axial direction, then after replacing the chair back, the set fixings will wrap more of the docking rods after wrapping the damaged original butt end to form a new butt end. Compared with the damaged original butt end, the newly wrapped part of the docking rod can still match the inner cavity size of the set fixings, thereby generating better friction, which to a certain extent ensures the firm installation of the chair back. Therefore, the chair back can be firmly installed and the service life of the leisure chair can be extended without replacing the main body of the chair back.

[0018] As a further improvement of the present utility model, the mounting portion further includes a plurality of mounting fixings for assisting in fixing the chair back;

[0019] The number and position of the mounting fixtures match the number and position of the docking rods;

[0020] When the chair back is installed, several of the set fixings are located at the top of the chair back, and several of the installation fixings are spaced apart from the set fixings and arranged on the installation surface, so that the set fixings cooperate with the installation fixings to fix the chair back on the main body of the chair.

[0021] Usually, in the normal use of leisure chairs, the backrest can be fixed by simply relying on the set fixings. However, in actual use, the leisure chair may be in other non-sitting use states such as transportation and stacking. In such states, by adding installation fixings to cooperate with the set fixings, the firmness of the backrest installation can be further guaranteed.

[0022] At the same time, after the chair back is firmly installed, the friction loss of the docking rod to the inner cavity of the set fixing part during use can be further reduced, thereby increasing the service life of the chair back and even the leisure chair.

[0023] The mounting fixture may be any component or set for fixing the relative position between the docking rod and the chair back, such as a buckle, a screw and a nut, a fixing ring, etc.

[0024] As a further improvement of the present invention, the installation fixing member includes a threaded fastener and a threaded joint member fixedly installed on the installation surface, and the threaded fastener is adapted to the threaded joint member; a mounting through hole is provided on the docking rod, for allowing the threaded fastener to pass through the mounting through hole and then be installed on the threaded joint member.

[0025] In a normal riding environment, the various forces exerted by the user on the chair back do not include an upward pulling force. However, when the user pulls the chair back to move the position of the leisure chair, the chair back is susceptible to an upward pulling force, which causes the set fixing part to no longer fit tightly on the docking end. After adopting a combination of threaded fasteners and threaded connectors, when the chair back is subjected to a pulling force, the threaded portion of the threaded fastener will conflict with the mounting through hole, thereby preventing the chair back and the mounting structure thereon from moving in the vertical direction, thereby preventing the set installation effect of the set fixing part from being weakened.

[0026] As a further improvement of the present invention, the mounting through hole includes a first hole and a second hole, the first hole allows the driving part of the threaded fastener to pass through, and the second hole only allows the threaded part of the threaded fastener to pass through, and when the seat back is installed, the first hole is located on the side of the docking rod away from the seat back.

[0027] In this structure, after the threaded fastener is screwed in, its driving part will be located in the installation through hole, and the driving part will collide with the second hole. At this time, the driving part of the threaded fastener can be prevented from being exposed and bumping, thereby causing wear between the threaded part and the second hole.

[0028] At the same time, when the seat back is initially installed, it is preferred to use the original threaded fasteners of the above size, that is, the threaded portion can pass through the second hole, and the driving portion can pass through the first hole but is difficult to pass through the second hole.

[0029] After the chair back is used for a long time, due to the pressure from all directions, friction loss is formed between the threaded part and the second hole, which may increase the size of the second through hole, etc., which will cause the original fixing method to be no longer firm. At this time, you can choose to use a larger threaded fastener, the driving part on which is larger than the driving part of the original threaded fastener and larger than the first hole, while the threaded part can still pass through the second hole and fit with the threaded joint part. Finally, after tightening the threaded fastener, the driving part of the new threaded fastener conflicts with the first hole and completes the new fixation, which still plays the role of installing the fixing part.

[0030] Under this structure, the service life of the seat back and the mounting structure thereon can be extended simply by replacing the threaded fasteners.

[0031] As a further improvement of the present invention, the docking rod is a rod with a special cross section. Since the shape of the inner cavity of the sleeve fixing piece is compatible with the docking rod, that is, the sleeve fixing piece can be smoothly sleeved on the docking end, when the docking rod is a rod with a special cross section, the shape of the inner cavity of the sleeve fixing piece will also be a corresponding special shape.

[0032] Special-shaped cross-sections include but are not limited to non-circular cross-sections such as elliptical, rectangular, and triangular.

[0033] When the docking rod is a rod with a special-shaped cross-section, in order to ensure the smooth installation of the chair back, the inner cavity of the set fixing piece and the cross-section of the docking rod are more compatible and fit tightly. Furthermore, it is difficult for the docking rod to rotate or move in the inner cavity of the set fixing piece, which also reduces the friction loss between the inner cavity and the docking end; at the same time, it can play a certain installation guiding role when installing the chair back.

[0034] As a further improvement of the present invention, the docking rod includes a smooth curved surface, and when the chair back is installed, the smooth curved surface faces the seat surface of the chair. Taking an elliptical rod as an example, it has two protruding ends and a smooth curved surface between the two ends. When the smooth curved surface faces the direction of the user's sitting, it can provide a more comfortable support experience for the user.

[0035] As a further improvement of the present invention, an elastic component is provided on the inner wall of the set fixing part. When the seat back is installed, the butt end compresses the elastic component, so that the elastic component is tightly fitted with the inner wall and the butt end at the same time, increasing the friction between the butt end and the inner wall, enhancing the installation firmness of the set fixing part, and reducing the direct friction loss between the inner cavity and the butt end. At the same time, if the butt end is deformed due to the impact and friction of the inner cavity, in order to ensure the installation firmness, the set fixing part can be restored to the original installation effect by replacing the elastic material of the corresponding new size.

[0036] A chair back, characterized by comprising any of the above-mentioned chair back mounting structures.

[0037] As a further improvement of the present invention, the chair back includes a main frame, and a recessed block is provided on the main frame near the mounting portion, so that the mounting surface is a curved surface structure. The set fixing piece is fixedly mounted on the mounting surface. When the mounting surface is a curved surface structure, the contact area between the set fixing piece and the mounting surface is large. When the chair back is subjected to pressure from all directions, the set fixing piece is not easy to fall off, thereby preventing the chair back mounting structure and the chair back from being damaged.

[0038] A leisure chair, characterized by comprising any one of the chair back mounting structures described above or any one of the chair backs described above.

[0039] The beneficial effects of the utility model include:

[0040] (1) The seat back is easy to install. At the same time, under this installation structure, it is not easy to wear the installation structure and thus reduce the service life of the seat back;

[0041] (2) Even if the original installation structure is too worn to be used, the overall service life of the chair back or leisure chair can be extended by simply replacing parts or components, thereby increasing the durability of the chair back or leisure chair and facilitating the promotion and use of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The following drawings are provided for combining with the preferred implementation cases of the present invention to help understand the purpose and advantages of the present invention, wherein:

[0043] Figure 1 This is a diagram showing the effect of installing the chair back;

[0044] Figure 2 Side view of the seat back mounting structure;

[0045] Figure 3 It is a schematic diagram of the structure of a threaded fastener;

[0046] Figure 4 It is a schematic diagram of the docking structure. DETAILED DESCRIPTION

[0047] The utility model is further described in detail below based on the accompanying drawings and implementation cases.

[0048] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0049] Embodiment 1:

[0050] A seat back mounting structure includes a mounting portion 1 and a docking portion 2. Figure 1 and Figure 4 As shown, the mounting portion 1 is fixedly arranged on the mounting surface of the chair back, and the docking portion 2 is mounted on the main body of the chair. In this embodiment, the mounting portion 1 includes two set fixing members 101, and the docking portion 2 includes two docking rods 201.

[0051] The position of the set fixing piece 101 matches the position of the docking rod 201, so that when the chair back is installed, the two set fixing pieces 101 can be respectively set on the docking ends 201-1 of the two docking rods 201. At the same time, in this embodiment, the docking rod 201 used is a round rod, so the inner cavity cross-section of the set fixing piece 101 is also round and has a similar size, so that the set fixing piece 101 can be firmly set on the docking end 201-1.

[0052] Preferably, in this embodiment, when the seat back is installed, the set fixing member 101 is located on the installation surface near the top of the seat back. Then the installation part 1 also includes two installation fixing members 102, and as shown in FIG. Figure 1 As shown, two mounting fixtures 102 are located on the mounting surface at positions spaced apart from the set fixture 101, and the position of a single mounting fixture 102 matches the position of the docking rod 201, so that the two mounting fixtures 102 can respectively fix the two docking rods 201. The mounting fixture 102 can be a fixing rod-shaped component such as a buckle.

[0053] Preferably, if Figures 1 to 3 As shown, the installation fixture 102 includes a threaded fastener 102-1 and a threaded connector 102-2 fixedly installed on the installation surface. The threaded fastener 102-1 is adapted to the threaded connector 102-2, that is, the threaded portion 102-1b of the threaded fastener 102-1 can be normally screwed into the threaded connector 102-2; the docking rod 201 is provided with a mounting through hole 201-2, which is used to allow the threaded portion 102-1b to pass through the mounting through hole 201-2 and then be installed on the threaded connector 102-2.

[0054] Preferably, the mounting through hole 201-2 includes a first hole 201-2a and a second hole 201-2b. Figure 2 As shown, the first hole 201-2a is larger than the second hole 201-2b, wherein the first hole 201-2a allows the driving portion 102-1a of the threaded fastener 102-1 to pass through, while the second hole 201-2b only allows the threaded portion 102-1b to pass through. When the seat back is installed, the first hole 201-2a is located on the side of the docking rod 201 away from the seat back.

[0055] Under the installation structure of this embodiment, the durability of the chair back is improved, and further, the overall service life of the leisure chair is improved.

[0056] Embodiment 2:

[0057] The difference between this embodiment and the first embodiment is that the docking rod 201 in this embodiment is a rod with a special-shaped cross section, and accordingly, the inner cavity shape of the set fixing member 101 is consistent with the cross-sectional shape of the rod with a special-shaped cross section.

[0058] Preferably, the docking rod 201 used in this embodiment is an elliptical rod, and when the chair back is installed, the smooth curved surface of the docking rod 201 faces the seat surface of the chair, that is, when the user sits and leans, the smooth curved surface contacts the user.

[0059] The installation structure in this embodiment can play a certain guiding role in the installation of the chair back; at the same time, it enhances the firmness of the chair back after installation, reduces the friction between the docking end 201-1 and the inner cavity of the set fixing member 101, and further improves the service life of the chair back.

[0060] Embodiment 3:

[0061] The difference between this embodiment and embodiment 1 or 2 is that in this embodiment, an elastic component, namely a rubber pad, is provided on the inner wall of the set fixing part 101. The rubber pad is an annular structure, and the outer wall of the annular structure fits with the inner wall of the set fixing part 101. When the seat back is installed, the inner wall of the annular structure fits tightly with the docking end 201-1, so that the elastic component fits tightly with the inner wall of the set fixing part 101 and the docking end 201-1 at the same time, thereby increasing the friction between the docking end 201-1 and the inner wall of the set fixing part 101.

[0062] Compared with Embodiment 1 or Embodiment 2, the installation structure in this embodiment provides another method of improving the firmness of the seat back installation and reducing the friction between the docking end 201-1 and the inner cavity of the set fixing member 101, which can also improve the service life of the seat back.

[0063] Embodiment 4:

[0064] A chair back comprises any one of the chair back mounting structures of embodiments 1 to 3.

[0065] Preferably, if Figure 1~2 As shown, the chair back includes a main frame A, and a recessed block is provided on the main frame A near the mounting portion 1, so that the mounting surface is a curved structure, increasing the contact area between the mounting surface and the set fixing part 101, and being able to improve the connection firmness between the chair back and the chair back mounting structure.

[0066] Embodiment 5:

[0067] A leisure chair, such as Figure 1~2 As shown, it includes any one of the chair back mounting structures in embodiments 1 to 3.

[0068] Embodiment 6:

[0069] A leisure chair, such as Figure 1~2 As shown, it includes the chair back in Example 4.

[0070] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.

Claims

1. A seat back mounting structure, characterized in that: Contains A mounting portion (1) is fixedly mounted on a mounting surface of a chair back and includes a plurality of set fixing parts (101); A docking portion (2) fixedly mounted on the main body of the chair, comprising a plurality of docking rods (201); The mounting portion (1) is matched with the docking portion (2) so that the chair back is mounted on the main body of the chair, wherein the number and position of the set fixing parts (101) match the number and position of the docking rods (201), and the size and shape of the inner cavity of the set fixing parts (101) respectively match the size and shape of the docking rods (201), so that after the chair back is mounted, a plurality of the set fixing parts (101) are all set and fixed on the docking ends (201-1) of a plurality of the docking rods (201).

2. A seat back mounting structure according to claim 1, characterized in that: The mounting portion (1) further comprises a plurality of mounting fixing members (102) for assisting in fixing the chair back; The number and position of the installation fixing members (102) match the number and position of the docking rods (201); When the chair back is installed, a plurality of the set fixing parts (101) are located at the top of the chair back, and a plurality of the installation fixing parts (102) are spaced apart from the set fixing parts (101) and arranged on the installation surface, so that the set fixing parts (101) cooperate with the installation fixing parts (102) to fix the chair back on the main body of the chair.

3. A seat back mounting structure according to claim 2, characterized in that: The installation fixture (102) comprises a threaded fastener (102-1) and a threaded connector (102-2) fixedly mounted on the installation surface, the threaded fastener (102-1) being compatible with the threaded connector (102-2); The docking rod (201) is provided with a mounting through hole (201-2) for allowing the threaded portion (102-1b) of the threaded fastener (102-1) to pass through the mounting through hole (201-2) and then be mounted on the threaded joint (102-2).

4. The seat back mounting structure according to claim 3, characterized in that: The mounting through hole (201-2) comprises a first hole (201-2a) and a second hole (201-2b). The first hole (201-2a) allows the driving portion (102-1a) of the threaded fastener (102-1) to pass through, and the second hole (201-2b) only allows the threaded portion (102-1b) to pass through. When the chair back is installed, the first hole (201-2a) is located on a side of the docking rod (201) away from the chair back.

5. The seat back mounting structure according to claim 1, characterized in that: The docking rod (201) is a rod with a special-shaped cross-section.

6. The seat back mounting structure according to claim 5, characterized in that: The docking rod (201) comprises a smooth curved surface portion, and when the chair back is installed, the smooth curved surface portion faces the location of the seat surface of the chair.

7. The seat back mounting structure according to claim 1, characterized in that: An elastic component is arranged on the inner wall of the set fixing member (101); when the seat back is installed, the butt end (201-1) presses the elastic component, so that the elastic component is tightly fitted to the inner wall and the butt end (201-1) at the same time, thereby increasing the friction between the butt end (201-1) and the inner wall.

8. A chair back, characterized in that: The invention comprises a chair back mounting structure as described in any one of claims 1 to 7.

9. The chair back according to claim 8, characterized in that: The chair backpack comprises a main frame (A), and a recessed block is arranged on the main frame (A) near the mounting portion (1), so that the mounting surface is a curved structure.

10. A leisure chair, characterized in that: It comprises the chair back mounting structure according to any one of claims 1 to 7 or the chair back according to any one of claims 8 to 9.

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