Seat supporting underframe

Abstract

A seat supporting underframe is used for solving the problems that some seats mentioned in the background technology only play a role in supporting a user, so that the user needs to manually move a short-leg seat, but some users with waist injuries are difficult to bend down to move the short-leg seat; and some short-leg seats are integrally made of wood and are more difficult to move, and if the short-leg seats are kicked by feet, the short-leg seats can be turned over. Comprising a base frame and two chair legs arranged on the two sides of the base frame, and idler wheels are arranged on the chair legs; sliding blocks are vertically arranged in the chair legs in a sliding mode, supporting pieces are arranged between the sliding blocks and the chair legs, the rolling wheels are arranged on the sliding blocks, locking assemblies are arranged on the chair legs, and the locking assemblies are used for locking the rolling wheels when the bottoms of the rolling wheels are flush with the bottoms of the chair legs.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a seat support chassis. Background Art

[0002] Currently, in the related art, the seat support chassis is prefabricated uniformly, and only a seat board needs to be added to the top of the seat support chassis subsequently to complete the processing of the seat.

[0003] However, in the prior art, some low-foot seats only serve to support the user. Therefore, the user needs to manually move the low-foot seat. However, for some users with lumbar injuries, it is a bit difficult to bend down to move the low-foot seat; and some low-foot seats are made of wood as a whole, which is even more difficult to move. If the method of kicking with the foot is used, the low-foot seat may be overturned. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a seat support chassis, which is used to solve the technical problems mentioned in the background art that some seats only serve to support the user. Therefore, the user needs to manually move the low-foot seat. However, for some users with lumbar injuries, it is a bit difficult to bend down to move the low-foot seat; and some low-foot seats are made of wood as a whole, which is even more difficult to move. If the method of kicking with the foot is used, the low-foot seat may be overturned.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] A seat support chassis includes a base frame and two chair legs provided on both sides of the base frame. Rollers are provided on the chair legs; a slider is vertically slidably provided in the chair legs, a support member is provided between the slider and the chair legs, the rollers are provided on the slider, and a locking assembly is provided on the chair legs. The locking assembly is used to lock the rollers when the bottom of the rollers is flush with the bottom of the chair legs.

[0007] Working Principle:

[0008] When sitting on the seat, the user applies pressure to the base frame, and the entire base frame and chair legs slide downward relative to the slider. At this time, the bottom of the rollers is flush with the bottom of the chair legs, and the locking assembly is used to lock the rollers;

[0009] When moving the seat, the user leaves the base frame, releases the pressure on the base frame, and lifts the seat upward. The entire base frame and chair legs rise relative to the slider, and under the support of the support member, the bottom of the chair legs is separated from the ground. At this time, only the rollers are in contact with the ground, and then the user can push the seat.

[0010] Beneficial Effects:

[0011] In this solution, by setting up rollers, the movement of the rollers can replace the user's manual handling of the seat, making the operation more labor-saving.

[0012] By setting up sliders and support members, after the user applies pressure to the base frame, the entire base frame and the chair legs slide downward relative to the sliders until the bottom surface of the chair legs is flush with the bottom of the rollers. Due to the existence of static friction between the chair legs and the ground, the rollers cannot move at this time, so the seat will not move with the movement of the rollers. When the user leaves the base frame, releases the pressure on the base frame, and lifts the seat upward, the entire base frame and the chair legs slide upward relative to the sliders, and under the support of the support members, the bottom of the chair legs is separated from the ground. At this time, only the rollers are in contact with the ground, so the user can push the seat, making it easier for the user to move the seat and avoiding the need for the user to manually carry the entire seat, reducing the operation intensity.

[0013] By setting up a locking component, the rollers can be locked, and the rollers cannot move, thus not affecting the stability of the seat. After locking the rollers, the bottom of the rollers is flush with the bottom of the chair legs, increasing the contact area between the rollers and the ground, and further increasing the contact area between the entire seat support base and the ground, making the stability stronger. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 is Figure 1 A schematic structural diagram when pressure is applied to the seat.

[0016] In the above drawings: base frame 1, chair legs 2, rollers 3, sliders 4, chutes 5, springs 6, connecting plates 11, mounting shafts 12, protective covers 13, rotating shafts 14, locking rods 15, pressing plates 18, arc grooves 19, locking blocks 20, arc holes 22. Detailed Embodiments

[0017] The technical solutions in the present utility model will be further described below with reference to the drawings and embodiments.

[0018] Embodiment:

[0019] As Figure 1 and Figure 2As shown in the figure, a seat support chassis includes a base frame 1 and two chair legs 2 provided on both sides of the base frame 1. Rollers 3 are provided on the chair legs 2. A slider 4 is vertically slidably provided in the chair leg 2. A support member is provided between the slider 4 and the chair leg 2. The roller 3 is provided on the slider 4. A locking assembly is provided on the chair leg 2. The locking assembly is used to lock the roller 3 when the bottom of the roller 3 is flush with the bottom of the chair leg 2. In this solution, by providing the roller 3, the movement of the roller 3 can replace the user's manual handling of the seat, making the operation more labor-saving;

[0020] By providing the slider 4 and the support member, when the user applies pressure to the base frame 1, the entire base frame 1 and the chair legs 2 slide downward relative to the slider 4 until the bottom surface of the chair leg 2 is flush with the bottom of the roller 3. Due to the existence of static friction between the chair leg 2 and the ground, the roller 3 cannot move at this time, so the seat will not move with the movement of the roller 3. When the user leaves the base frame 1, releases the pressure on the base frame 1, and lifts the seat upward, the entire base frame 1 and the chair legs 2 slide upward relative to the slider 4, and under the support of the support member, the bottom of the chair leg 2 is separated from the ground. At this time, only the roller 3 is in contact with the ground, so the user can push the seat, making it easier for the user to move the seat, avoiding the user having to manually carry the entire seat and reducing the operation intensity;

[0021] By providing the locking assembly, the roller 3 can be locked, and the roller 3 cannot move, thus not affecting the stability of the seat. And after locking the roller 3, the bottom of the roller 3 is flush with the bottom of the chair leg 2, thereby increasing the contact area between the roller 3 and the ground, and further increasing the contact area between the entire seat support chassis and the ground, making the stability stronger.

[0022] As Figure 1 and Figure 2 shown in the figure, a vertical chute 5 is provided inside the chair leg 2. The support member is a spring 6. The spring 6 is fixed in the chute 5. The slider 4 is fixedly connected to the bottom end of the spring 6. The spring 6 is a nitrogen spring, and the nitrogen spring has a large elasticity. When the user leaves the base frame 1 and releases the pressure on the base frame 1, lifts the seat upward, and then with the elastic force of the spring 6, the spring 6 elongates and pushes the entire base frame 1 and the chair legs 2 to rise, so that a height difference is generated between the bottom of the chair leg 2 and the bottom of the roller 3, so that the roller 3 can move, and thus the seat can be driven to move, making it more labor-saving.

[0023] As Figure 1 and Figure 2As shown, a connecting plate 11 is fixedly provided on one side of the slider 4. An installation shaft 12 is rotatably provided at the bottom of the connecting plate 11. The installation shaft 12 is connected to the connecting plate 11 through a bearing. A protective cover 13 is fixedly provided at the bottom end of the installation shaft 12. A rotating shaft 14 is rotatably provided inside the protective cover 13. The roller 3 is fixedly sleeved on the rotating shaft 14. The setting of the rotating shaft 14 enables the roller 3 to rotate around the rotating shaft 14, and the setting of the installation shaft 12 can cause the roller 3 to rotate around the connecting plate 11.

[0024] As Figure 1 and Figure 2 shown, the locking assembly includes a pressing plate 18 and a locking rod 15. The pressing plate 18 is fixedly provided inside the chair leg 2. An arc-shaped groove 19 is formed on the bottom surface of the pressing plate 18. An arc-shaped hole 22 is formed on the connecting plate 11. The arc-shaped structures of the arc-shaped groove 19 and the arc-shaped hole 22 are the same. The top end of the locking rod 15 is slidably arranged in the arc-shaped groove 19, and the locking rod 15 vertically penetrates through the arc-shaped hole 22 and the protective cover 13 for abutting against the rotating shaft 14.

[0025] When the user applies pressure to the base frame 1, the entire base frame 1 and the chair legs 2 descend. At this time, the pressing plate 18 and the locking rod 15 are driven to descend. The locking rod 15 moves vertically downward to abut against the rotating shaft 14, thereby restricting the rotation of the rotating shaft 14 and locking the rotation of the roller 3. When the roller 3 rotates around the installation shaft 12, the rotation of the roller 3 drives the protective cover 13 and the locking rod 15 to rotate. Since the rotation trajectory of the roller 3 is arc-shaped, the arc-shaped groove 19 and the arc-shaped hole 22 need to be provided so that when the protective cover 13 and the locking rod 15 rotate around the installation shaft 12, they rotate in the arc-shaped groove 19 and the arc-shaped hole 22 to realize the multi-directional rotation of the seat.

[0026] As Figure 1 and Figure 2 shown, a locking block 20 is fixedly provided at the bottom end of the locking rod 15. The side of the locking block 20 facing the rotating shaft 14 is an arc-shaped surface. The contact area between the locking block 20 and the rotating shaft 14 is larger than the contact area between the locking rod 15 and the rotating shaft 14. Therefore, the static friction between the locking block 20 and the rotating shaft 14 is large, and the locking effect on the rotating shaft 14 is better.

[0027] Working principle:

[0028] When it is necessary to sit on this seat, the user applies pressure to the base frame 1. The chair legs 2 move vertically downward to contact the ground. The bottom of the roller 3 is flush with the bottom of the chair legs 2. During this process, the chair legs 2 drive the pressing plate 18, the locking rod 15, and the locking block 20 to move vertically downward to abut against the surface of the rotating shaft 14, thereby locking the roller 3.

[0029] When the user leaves the seat, the base frame 1 is lifted upward. During this process, the spring 6 cooperates with the elongation to push the entire base frame 1 and the chair legs 2 to move vertically upward, creating a height difference between the bottom of the chair legs 2 and the bottom of the rollers 3, and the locking block 20 disengages from the contact with the surface of the rotating shaft 14;

[0030] At this time, the user can rotate the seat, and the roller 3 can rotate around the rotating shaft 14; the roller 3 can also rotate around the mounting shaft 12, and the rotation of the mounting shaft 12 drives the protective cover 13 and the locking rod 15 to rotate around the arc-shaped groove 19 and the arc-shaped hole 22, so that the seat can also rotate an angle during the rotation process, and thus the entire operation is completed.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A seat support frame, characterized in that: The invention comprises a base frame (1) and two chair legs (2) arranged on both sides of the base frame (1), wherein the chair legs (2) are provided with rollers (3); a slider (4) is arranged in the chair legs (2) for vertical sliding, a support is arranged between the slider (4) and the chair legs (2), the roller (3) is arranged on the slider (4), and a locking assembly is arranged on the chair legs (2), wherein the locking assembly is used to lock the roller (3) when the bottom of the roller (3) is flush with the bottom of the chair legs (2).

2. A seat support frame according to claim 1, characterized in that: A vertical slide groove (5) is provided inside the chair leg (2); the support member is a spring (6); the spring (6) is fixed in the slide groove (5); and the slider (4) is fixedly connected to the bottom end of the spring (6).

3. A seat support frame according to claim 1, characterized in that: A connecting plate (11) is fixedly provided on one side of the sliding block (4); a mounting shaft (12) is rotatably provided at the bottom of the connecting plate (11); the mounting shaft (12) and the connecting plate (11) are connected via a bearing; a protective cover (13) is fixedly provided at the bottom end of the mounting shaft (12); a rotating shaft (14) is rotatably provided inside the protective cover (13); the roller (3) is fixedly sleeved on the rotating shaft (14); the setting of the rotating shaft (14) enables the roller (3) to rotate around the rotating shaft (14); and the setting of the mounting shaft (12) can enable the roller (3) to rotate around the connecting plate (11).

4. A seat support frame according to claim 3, characterized in that: The locking assembly comprises a pressing plate (18) and a locking rod (15). The pressing plate (18) is fixedly arranged on the inner side of the chair leg (2). The bottom surface of the pressing plate (18) is provided with an arc groove (19). The connecting plate (11) is provided with an arc hole (22). The arc groove (19) and the arc hole (22) have the same arc structure. The top end of the locking rod (15) is slidably arranged in the arc groove (19). The locking rod (15) vertically passes through the arc hole (22) and the protective cover (13) to abut against the rotating shaft (14).

5. A seat support frame according to claim 4, characterized in that: A locking block (20) is fixedly disposed at the bottom end of the locking rod (15), and a side of the locking block (20) facing the rotating shaft (14) is an arc-shaped surface.

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