Arm-chair base

Abstract

The utility model provides an arm-chair base, and belongs to the technical field of furniture. The problem of how to reduce the transportation cost of the arm-chair is solved. The arm-chair base comprises a supporting frame, an upper shaft sleeve and a lower shaft sleeve which are connected in an inserted mode are arranged above the supporting frame in the vertical direction, a protruding part is arranged on the outer wall of the upper shaft sleeve and abuts against the upper end of the lower shaft sleeve, and a plurality of upper connecting rods arranged at intervals in the circumferential direction are arranged on the outer wall of the upper shaft sleeve; a plurality of lower connecting rods arranged at intervals in the circumferential direction are arranged on the outer wall of the lower shaft sleeve, and the upper connecting rods and the lower connecting rods are detachably connected with the supporting frame. According to the arm-chair base, the transportation cost of an arm-chair can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of furniture and relates to a chair base. Background Art

[0002] The armchair is one of the more common furniture in today's life. With the improvement of living conditions, the types of armchairs are becoming more and more diverse. The rotatable armchair is one of the more popular ones nowadays. Specifically, the armchair includes a base and a chair frame body. A vertically arranged rotating shaft is provided at the bottom of the chair frame body, and a shaft sleeve is vertically provided on the base. The rotating shaft is inserted into the shaft sleeve and cooperates with the bearing, so that the rotating shaft is rotatably connected in the shaft sleeve, thereby achieving the purpose of the chair frame body being able to rotate on the base.

[0003] As a manufacturer, in order to ensure profits, in addition to the material cost required to manufacture the chair itself, the transportation cost is the first thing to bear the brunt. The solution to reduce transportation costs is the one-way transportation volume. For the above-mentioned chairs, in order to reduce the transportation cost, manufacturers generally split the many chairs into two parts: the chair frame and the base, and then stack the two in sequence in the carriage, so as to increase the number that can be loaded at a time.

[0004] However, in actual operation, due to the structure of the base itself and the existence of components such as the bushing on the base, the shape of the base is irregular. Therefore, after several bases are stacked in the carriage, there will still be unnecessary waste of space inside the carriage, and the effect of saving transportation costs cannot be achieved. Summary of the invention

[0005] The purpose of the utility model is to solve the above problems in the prior art and to propose a backrest base. The technical problem to be solved by the utility model is: how to reduce the transportation cost of the backrest.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a chair base, including a support frame, characterized in that an upper sleeve and a lower sleeve that are plugged into each other in the vertical direction are provided above the support frame, the upper sleeve has a protrusion on its outer wall, and the protrusion abuts against the upper end of the lower sleeve, the upper sleeve has a plurality of upper connecting rods arranged at intervals along the circumferential direction on its outer wall, and the lower sleeve has a plurality of lower connecting rods arranged at intervals along the circumferential direction on its outer wall, and the plurality of upper connecting rods and the plurality of lower connecting rods are detachably connected to the support frame.

[0007] The difference between the present chair base and the prior art is that the present chair base is composed of three parts: a support frame, an upper sleeve and a lower sleeve, wherein the lower sleeve is detachably connected to the support frame by a plurality of lower connecting rods on the outer wall, so that the lower sleeve can be vertically positioned above the support frame; secondly, the upper sleeve is also detachably connected to the support frame by a plurality of upper connecting rods on the outer wall, so that the upper sleeve can be vertically positioned above the support frame, and in this state, the upper sleeve is plugged into the lower sleeve, and the upper sleeve is auxiliary positioned by the lower sleeve to ensure the structural stability of the upper sleeve. When loading and transporting, workers can remove the upper connecting rods and the lower connecting rods from the support frame, and then classify and stack the plurality of upper sleeves with upper connecting rods. , classify and stack several lower bushings with lower connecting rods, and classify and stack several support frames, so as to minimize the space required for the base when loading, and then ensure that as many chair bases as possible can be loaded into the cargo box at one time, so as to reduce the transportation cost. It is worth mentioning that in this case, after the upper bushing and the lower bushing are plugged in, the protrusion on the outer wall of the upper bushing can eventually abut against the upper end of the lower bushing, so as to limit the position of the upper bushing in the vertical direction, so as to avoid interference between the upper connecting rods and the lower bushings. After the lower ends of the upper connecting rods and the lower connecting rods are fixed on the support frame, the slight deflection caused by locking can be avoided, which will cause interference between the upper bushing and the lower bushing in the circumferential direction.

[0008] In the above-mentioned armchair base, the lower end of each lower connecting rod has an L-shaped lower positioning plate, and each lower positioning plate includes a lower fitting portion arranged vertically and a lower pressing portion arranged horizontally, the lower fitting portion abuts against the inner side wall of the support frame, and the lower pressing portion is pressed on the upper end of the support frame and is screwed and locked with the support frame by screws. When installing, the lower sleeve is placed vertically above the support frame, and the lower fitting portion abuts against the inner side wall of the support frame, and the lower pressing portion is pressed against the top of the support frame, and the lower fitting portion and the lower pressing portion cooperate with the support frame to achieve pre-positioning between the lower end of each lower connecting rod and the support frame, and thereafter, the screw is passed through the lower pressing portion and is screwed with the support frame, so that the lower pressing portion is pressed against the top of the support frame, thereby ensuring that the connection between the lower end of each lower connecting rod and the support frame is stable, and ensuring that the lower sleeve can be firmly positioned above the support frame.

[0009] In the above-mentioned armchair base, the support frame is annular, and the lower end of each upper connecting rod has an L-shaped upper positioning plate, and each upper positioning plate includes a vertically arranged upper fitting portion and a horizontally arranged upper pressing portion, and the upper fitting portion is pressed against the inner side wall of the support frame, and the upper pressing portion is pressed on the upper end of the support frame and is screwed and locked with the support frame by screws. Similarly, after the upper shaft sleeve is placed vertically above the support frame and plugged into the lower shaft sleeve, the upper fitting portion is pressed against the inner side wall of the support frame, and the upper pressing portion is pressed against the top of the support frame, and the upper fitting portion and the upper pressing portion cooperate with the support frame, thereby realizing the pre-positioning between the lower end of each upper connecting rod and the support frame, and thereafter, the screw is passed through the upper pressing portion and is screwed with the support frame, so that the upper pressing portion is pressed against the top of the support frame, thereby ensuring the stable connection between the lower end of each upper connecting rod and the support frame, and ensuring that the upper shaft sleeve can be firmly positioned above the support frame.

[0010] In the above-mentioned armchair base, the protrusion is arranged near the outer wall of the middle part of the upper sleeve and is located below the upper end of each upper connecting rod, and the protrusion is arranged in a ring shape along the circumference of the upper sleeve. Through this arrangement, it is ensured that the contact area between the protrusion and the upper end of the lower sleeve is more sufficient, thereby ensuring the stable positioning of the upper sleeve.

[0011] In the above-mentioned armchair base, the plurality of upper connecting rods and the plurality of lower connecting rods are all curved from the upper end to the lower end. Through this arrangement, the pressure can be transmitted obliquely downward, ensuring that the upper fitting part and the lower fitting part can press against the inner wall of the support frame, while the upper pressing part and the lower pressing part can also press against the top of the support frame, thereby achieving the effect of dispersing the force and preventing the positioning plate from being subjected to excessive concentration of force.

[0012] Compared with the prior art, the chair base has the following advantages:

[0013] The upper sleeve is plugged into the lower sleeve, and the protrusion on the outer wall of the upper sleeve is abutted against the upper end of the lower sleeve for positioning. The upper connecting rod on the outer wall of the upper sleeve and the lower connecting rod on the outer wall of the lower sleeve are connected to the support frame in a detachable manner. When loading, workers can classify and stack the upper sleeve with the upper connecting rod, the lower sleeve with the lower connecting rod, and the support frame, thereby minimizing the occupied space and reducing the transportation cost of the chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the armchair.

[0015] Figure 2 It is a schematic diagram of the structure of the base.

[0016] Figure 3 This is an exploded view of the base.

[0017] Figure 4 It is a structural schematic diagram of the upper sleeve and the upper connecting rod and a partial enlarged diagram thereof.

[0018] Figure 5 It is a structural schematic diagram of the lower sleeve and the lower connecting rod and a partial enlarged diagram thereof.

[0019] In the figure, 1. support frame; 11. upper sleeve; 111. protrusion; 112. upper connecting rod; 12. lower sleeve; 121. lower connecting rod; 2. upper positioning plate; 21. upper fitting part; 22. upper pressing part; 3. lower positioning plate; 31. lower fitting part; 32. lower pressing part; 4. chair frame body. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1-5 As shown, in the base of the armchair, the armchair includes a chair frame body 4 with a connecting shaft at the bottom, and the base includes a ring-shaped support frame 1, a tubular upper sleeve 11 and a lower sleeve 12, the upper sleeve 11 and the lower sleeve 12 are both vertically arranged, and the upper wall of the upper sleeve 11 has at least two long upper connecting rods 112 along the circumferential direction, and the upper connecting rods 112 are arranged at intervals along the circumference of the upper sleeve 11 and the upper ends are welded and fixed to the outer wall of the upper sleeve 11, and the outer wall of the lower sleeve 12 has at least two long lower connecting rods 121 along the circumferential direction, and the lower connecting rods 121 are arranged at intervals along the circumference of the lower sleeve 12 and the upper ends are welded and fixed to the outer wall of the lower sleeve 12, and each upper connecting rod 112 and each lower connecting rod 121 are curved from the upper end to the lower end.

[0022] like Figure 4As shown, the upper wall of the upper sleeve 11 located below the upper end of each upper connecting rod 112 has an outward protrusion 111 and an annular protrusion 111 along the circumferential direction. When the upper sleeve 11 and the lower sleeve 12 are plugged into each other, the protrusion 111 can finally abut against the upper end of the lower sleeve 12, thereby ensuring that the upper sleeve 11 is limited in the vertical direction. The lower end of each upper connecting rod 112 is welded and fixed with an L-shaped upper positioning plate 2, and the lower end of each lower connecting rod 121 is welded and fixed with an L-shaped lower positioning plate 3. Each upper positioning plate 2 includes a horizontally arranged upper pressing portion 22 and a vertically arranged upper fitting portion 21. Each lower positioning plate 3 includes a horizontally arranged lower pressing portion 32 and a vertically arranged lower fitting portion 31. When splicing and assembling, the lower end of the lower connecting rod 121 is overlapped on the support frame 1 so that the lower fitting portion 31 is aligned with the support frame The inner wall of the support frame 1 fits together and presses against the inner wall of the support frame 1 under the action of pressure. At the same time, the lower pressing portion 32 covers the top of the support frame 1 and presses against the outer wall of the top of the support frame 1 under the action of pressure, and the lower end of the upper connecting rod 112 is overlapped on the support frame 1, so that the upper fitting portion 21 fits together with the inner wall of the support frame 1 and presses against the inner wall of the support frame 1 under the action of pressure. At the same time, the upper pressing portion 22 covers the top of the support frame 1 and presses against the outer wall of the top of the support frame 1 under the action of pressure, so that the lower ends of each upper connecting rod 112 and each lower connecting rod 121 are firmly positioned on the support frame 1. Finally, a number of screws are passed through the upper pressing portion 22 and screwed to the support frame 1, so that the upper pressing portion 22 and the lower pressing portion 32 are pressed against the support frame 1, thereby ensuring the connection stability of each upper connecting rod 112 and each lower connecting rod 121 to the support frame 1.

[0023] Before loading, workers can remove the chair frame body 4 from the base and stack it separately for loading, and then use a screwdriver to remove the screws on the upper pressing part 22 and the lower pressing part 32, so that the upper bushing 11 with the upper connecting rod 112 and the lower bushing 12 with the lower connecting rod 121 are removed from the support frame 1. After that, the workers classify the upper bushing 11 with the upper connecting rod 112 into one category, the lower bushing 12 with the lower connecting rod 121 into one category, and the support frame 1 into one category, and then stack the three types of components reasonably in the compartment of the truck.

[0024] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0025] Although the terminology such as support frame 1, upper sleeve 11, protrusion 111, upper connecting rod 112, lower sleeve 12, lower connecting rod 121, upper positioning plate 2, upper fitting portion 21, upper pressing portion 22, lower positioning plate 3, lower fitting portion 31, lower pressing portion 32 is used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional limitation is contrary to the spirit of the utility model.

Claims

1. A chair base, comprising a support frame (1), characterized in that: An upper shaft sleeve (11) and a lower shaft sleeve (12) which are plugged into each other in the vertical direction are arranged above the support frame (1); a protrusion (111) is provided on the outer wall of the upper shaft sleeve (11), and the protrusion (111) abuts against the upper end of the lower shaft sleeve (12); a plurality of upper connecting rods (112) are arranged at intervals along the circumferential direction on the outer wall of the upper shaft sleeve (11); a plurality of lower connecting rods (121) are arranged at intervals along the circumferential direction on the outer wall of the lower shaft sleeve (12); and the plurality of upper connecting rods (112) and the plurality of lower connecting rods (121) are detachably connected to the support frame (1).

2. The chair base according to claim 1, characterized in that: The lower end of each lower connecting rod (121) has an L-shaped lower positioning plate (3), and each lower positioning plate (3) includes a vertically arranged lower fitting portion (31) and a horizontally arranged lower pressing portion (32), the lower fitting portion (31) is pressed against the inner wall of the support frame (1), and the lower pressing portion (32) is pressed onto the upper end of the support frame (1) and is screwed and locked with the support frame (1) by screws.

3. The chair base according to claim 1 or 2, characterized in that: The support frame (1) is annular, and each upper connecting rod (112) has an L-shaped upper positioning plate (2) at the lower end. Each upper positioning plate (2) includes a vertically arranged upper fitting portion (21) and a horizontally arranged upper pressing portion (22). The upper fitting portion (21) is pressed against the inner wall of the support frame (1), and the upper pressing portion (22) is pressed onto the upper end of the support frame (1) and is screwed and locked with the support frame (1) by screws.

4. The chair base according to claim 3, characterized in that: The protrusion (111) is arranged close to the outer wall of the middle part of the upper sleeve (11) and is located below the upper end of each upper connecting rod (112), and the protrusion (111) is arranged in a ring shape along the circumference of the upper sleeve (11).

5. The chair base according to claim 4, characterized in that: The plurality of upper connecting rods (112) and the plurality of lower connecting rods (121) are all bent into an arc shape from the upper end to the lower end.

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