Leg support anti-pinch structure of electric sofa

Abstract

The utility model relates to electric sofa technical field discloses a leg support anti -pinch structure of electric sofa, including the chassis and the adjusting framework, the one end rotationally installed with backrest framework away from the chassis of adjusting framework, the one end rotationally installed with adjusting rod no.

Description

Technical Field

[0001] This utility model relates to the field of electric sofa technology, specifically to an anti-pinch structure for the leg rest of an electric sofa. Background Technology

[0002] With the popularization of smart and comfortable home concepts, electric sofas, with their electrically adjustable backrest angles and extendable leg rests, offer users personalized sitting and reclining experiences and have become a mainstream choice for modern homes and offices. The leg rest, as a core functional component of electric sofas, primarily extends or retracts electrically to accommodate users' leg placement needs in scenarios such as resting, watching movies, and working. However, during the electric extension and retraction of the leg rest, a dynamically changing gap is formed between it and the sofa frame, front panel, or floor. If an object, such as a user's hand, a child's finger, a pet's limb, or clothing, accidentally enters this gap, the continuous movement of the leg rest may cause the object to be trapped, resulting in damage to clothing or even serious injury. Therefore, anti-pinch design is necessary.

[0003] Chinese Utility Model Patent Publication No. CN120130780A discloses a zero-wall-leaning sofa frame and sofa. The specification of this zero-wall-leaning sofa frame and sofa discloses that the drive component drives the leg support assembly to unfold via a telescopic cylinder and a rotating rod, which in turn moves the seat frame and the linkage component, allowing the backrest assembly and leg support assembly to sequentially adjust from a sitting position to a TV position and a reclining position. Throughout the process, the backrest assembly does not extend beyond the end of the bottom frame furthest from the leg support assembly, achieving a zero-wall-leaning design. This significantly improves the convenience and comfort of users adjusting the sofa's posture. The sliding linkage in the linkage component, through the sliding connection of the first slider and the first slide groove, and the second slider and the second slide groove, enables smooth lifting and translational movements during different posture transitions, ensuring smooth and stable movement of the backrest assembly, seat frame, and leg support assembly. However, although this zero-wall-leaning sofa frame and sofa can achieve multi-state adjustment, it lacks a multi-state anti-pinch structure. During use, the continuous movement of the leg support may cause objects to be pinched, resulting in damage to clothing or even serious injury to the human body, leading to poor practicality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an anti-pinch structure for the leg rest of an electric sofa. It can effectively solve the problem in the prior art that the continuous movement of the leg rest may cause objects to be pinched, which may cause damage to clothing or even injury to the human body, resulting in poor practicality.

[0005] The technical solution adopted by this utility model is: a leg support anti-pinch structure for an electric sofa, including a base frame and an adjustable frame. A backrest frame is rotatably installed at the end of the adjustable frame away from the base frame. An adjusting rod one and an adjusting rod two are rotatably installed at the end of the adjustable frame away from the backrest frame. The end of the adjusting rod two away from the adjusting rod one is rotatably connected to an anti-pinch component. An anti-pinch component is rotatably installed at the end of the adjustable frame away from the backrest frame. A spring is fixedly installed at the end of the anti-pinch component near the backrest frame.

[0006] The anti-pinch assembly includes an anti-pinch sleeve, a first fixing rod, and a second fixing rod. The first fixing rod and the second fixing rod are rotatably mounted to the anti-pinch sleeve. A protrusion is fixedly mounted on one end of the anti-pinch sleeve near the first fixing rod and the second fixing rod. One end of the protrusion is fixedly mounted to a spring, and the end of the spring away from the protrusion is fixedly mounted to an adjusting rod.

[0007] Preferably, one end of the anti-pinch sleeve has a connecting hole, and the end of the fixing rod near the anti-pinch sleeve is fixedly installed with a connecting handle. The anti-pinch sleeve and the connecting handle are rotatably installed through the connecting hole.

[0008] Through the above technical solution, the anti-pinch sleeve is connected to the connecting handle 1 through the connecting hole. When rotating, the anti-pinch sleeve can rotate around the connecting hole, so that the end of the anti-pinch sleeve away from the connecting hole can be disengaged from the connecting handle 1, and its angle can be adjusted. When the user accidentally gets the clothes stuck, it can be easily and quickly removed.

[0009] Preferably, the end of the first fixing rod away from the first connecting handle is provided with an adjustment groove, and the end of the second fixing rod near the adjustment groove is provided with a positioning hole. The adjustment groove has an arc-shaped cross-section, and the positioning hole is located on the same plane as the adjustment groove.

[0010] The above technical solution guides the second fixed rod to move along the preset adjustment groove through the arc-shaped adjustment groove, which can avoid excessive swinging and excessive opening and closing angle. In conjunction with the positioning hole one, a limit pin can be inserted to further constrain the movement stroke, so that the positions of the first fixed rod and the second fixed rod are relatively stable, which can prevent the anti-pinch gap from being too large due to excessive movement.

[0011] Preferably, the first fixing rod and the second fixing rod are rotatably connected, and the end of the second fixing rod away from the first connecting handle is provided with a positioning hole.

[0012] Through the above technical solution, the fixing rod one and the fixing rod two are rotatably connected. The positioning hole two of the fixing rod two can be used to install a limiting component. When adjusting, the two can be rotatably connected to adjust the angle with the extension and retraction of the leg support, adapting to the unfolding and retraction of the leg support. Furthermore, the positioning hole two can be fitted with a pin or bolt to further limit the maximum opening and closing angle and prevent excessive separation.

[0013] Preferably, the end of the fixing rod two away from the connecting handle one is fixedly installed with the connecting handle two, and the fixing rod two is rotatably installed with both the adjusting rod one and the adjusting rod two through the connecting handle two.

[0014] Through the above technical solution, by using the connecting handle 2 as an intermediate transmission component, the telescopic movement of the adjusting rod 1 and adjusting rod 2 is converted into the rotational movement of the fixed rod 2, which drives the anti-pinch component to adjust its position synchronously, so that the leg support adjustment and the anti-pinch protection action are synchronized.

[0015] Preferably, the adjusting rod is located away from the anti-pinch component, and the connecting rod is connected to the adjusting frame.

[0016] Through the above technical solution, by connecting handle two and adjusting rod one and adjusting rod two, when the driving force of the adjusting frame is transmitted to adjusting rod one through connecting rod one, it drives adjusting rod one to rotate, and then drives the anti-pinch action through spring and fixing rod one, so as to realize the unfolding of the leg support.

[0017] Preferably, the second adjusting rod is away from the anti-pinch component, the second connecting rod is connected to the adjusting frame, and the adjusting frame is provided with a third connecting rod at one end near the base frame.

[0018] Through the above technical solution, the power of the adjusting frame is transmitted to the adjusting rod 2 through the second connecting rod, which works in conjunction with the first adjusting rod to drive the anti-pinch component to ensure that the force on both sides of the leg support is balanced. In addition, the third connecting rod reinforces the connection between the adjusting frame and the base frame to prevent the frame from deforming when the leg support is adjusted.

[0019] Compared with the prior art, this utility model provides an anti-pinch structure for the leg rest of an electric sofa, which has the following beneficial effects:

[0020] 1. The anti-pinch structure of the leg rest of this electric sofa, through the design of the anti-pinch sleeve, allows the anti-pinch sleeve to open and close from the bottom by rotating the anti-pinch sleeve and connecting handle one when the upper angle is adjusted, thus achieving the first state of opening and closing. With the cooperation of the adjustment groove and the fixing rod two, the fixing rod one and the anti-pinch sleeve can move around the adjustment groove, thus achieving the second state of opening and closing. This avoids opening and closing at multiple angles and plays an anti-pinch role, preventing objects from being pinched due to the continuous movement of the leg rest during use, which could cause damage to clothing or injury to the human body.

[0021] 2. The anti-pinch structure of the leg rest of this electric sofa, through the cooperation of springs and protrusions, allows the force-bearing end to reset when released during the first or second state adjustment, thanks to the deformation capability of the springs. This facilitates a quick return to the initial position, thereby improving its practicality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the adjustable frame and backrest frame of this utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the adjustable frame and backrest frame of this utility model. Figure 2 ;

[0026] Figure 5 This is a three-dimensional structural diagram of the first state of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the second state of this utility model;

[0028] Figure 7 This is a schematic diagram of the disassembled structure of this utility model.

[0029] The components are as follows: 1. Base frame; 2. Adjustable frame; 3. Backrest frame; 4. Link 1; 5. Adjusting rod 1; 6. Link 2; 7. Adjusting rod 2; 8. Anti-pinch assembly; 801. Anti-pinch sleeve; 802. Connecting hole; 803. Protrusion; 804. Fixing rod 1; 805. Adjusting groove; 806. Connecting handle 1; 807. Fixing rod 2; 808. Positioning hole 1; 809. Positioning hole 2; 810. Connecting handle 2; 9. Spring; 10. Link 3. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1: As Figure 1-7 As shown, the present invention provides an anti-pinch structure for the leg support of an electric sofa, including a base frame 1 and an adjustable frame 2. A backrest frame 3 is rotatably mounted on the end of the adjustable frame 2 away from the base frame 1. An adjusting rod 1 5 and an adjusting rod 2 7 are rotatably mounted on the end of the adjustable frame 2 away from the backrest frame 3. The end of the adjusting rod 2 7 away from the adjusting rod 1 5 is rotatably connected to an anti-pinch component 8. The anti-pinch component 8 is rotatably mounted on the end of the adjustable frame 2 away from the backrest frame 3. A spring 9 is fixedly mounted on the end of the anti-pinch component 8 near the backrest frame 3.

[0032] The anti-pinch assembly 8 includes an anti-pinch sleeve 801, a first fixing rod 804, and a second fixing rod 807. The first fixing rod 804 and the second fixing rod 807 are rotatably mounted to the anti-pinch sleeve 801. A protrusion 803 is fixedly mounted on the end of the anti-pinch sleeve 801 near the first fixing rod 804 and the second fixing rod 807. One end of the protrusion 803 is fixedly mounted to the spring 9. The end of the spring 9 away from the protrusion 803 is fixedly mounted to the first adjusting rod 5.

[0033] Specifically, the anti-pinch sleeve 801 has a connecting hole 802 at one end, and a connecting handle 806 is fixedly installed on the end of the fixing rod 804 near the anti-pinch sleeve 801. The anti-pinch sleeve 801 is rotatably installed with the connecting handle 806 through the connecting hole 802. The advantage is that the anti-pinch sleeve 801 is connected to the connecting handle 806 through the connecting hole 802. When rotating, the anti-pinch sleeve 801 can rotate around the connecting hole 802, which allows the end of the anti-pinch sleeve 801 away from the connecting hole 802 to disengage from the connecting handle 806, thus achieving angle adjustment. When the user accidentally gets the clothes stuck, it can be easily and quickly removed.

[0034] Specifically, the end of the first fixed rod 804 away from the first connecting handle 806 has an adjustment groove 805, and the end of the second fixed rod 807 near the adjustment groove 805 has a positioning hole 808. The adjustment groove 805 has an arc-shaped cross-section, and the positioning hole 808 and the adjustment groove 805 are located on the same plane. The advantage is that the second fixed rod 807 is guided to move along the preset adjustment groove 805 by the arc-shaped adjustment groove 805, which can avoid excessive swinging and excessive opening and closing angle. In addition, a limit pin can be inserted into the positioning hole 808 to further constrain the movement stroke, so that the positions of the first fixed rod 804 and the second fixed rod 807 are relatively stable, which can prevent the anti-pinch gap from being too large due to excessive movement.

[0035] Specifically, the first fixing rod 804 and the second fixing rod 807 are rotatably connected. The end of the second fixing rod 807 away from the first connecting handle 806 has a positioning hole 809. The advantage is that by rotatably connecting the first fixing rod 804 and the second fixing rod 807, a limiting component can be installed in the positioning hole 809 of the second fixing rod 807. When adjusting, the angle between the two can be flexibly adjusted with the extension and retraction of the leg support through the rotatable connection, which can adapt to the unfolding and retracting of the leg support. Furthermore, by installing a pin or bolt in the positioning hole 809, the maximum opening and closing angle can be further limited to prevent excessive separation.

[0036] Example 2: Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0037] Specifically, a connecting handle 810 is fixedly installed at the end of the fixed rod 807 away from the connecting handle 806. The fixed rod 807 is rotatably installed with the adjusting rod 5 and the adjusting rod 7 via the connecting handle 810. The advantage is that the connecting handle 810 acts as an intermediate transmission component, converting the telescopic movement of the adjusting rod 5 and the adjusting rod 7 into the rotational movement of the fixed rod 807, which drives the anti-pinch component 8 to adjust its position synchronously, so that the leg support adjustment and the anti-pinch protection action are synchronized.

[0038] Specifically, a connecting rod 4 is rotatably mounted on the end of the adjusting rod 5 away from the anti-pinch component 8. The connecting rod 4 is connected to the adjusting frame 2. The advantage is that, through the cooperation of the connecting handle 810 with the adjusting rod 5 and the adjusting rod 7, when the driving force of the adjusting frame 2 is transmitted to the adjusting rod 5 via the connecting rod 4, the adjusting rod 5 is rotated, which in turn drives the anti-pinch sleeve 801 to move through the spring 9 and the fixing rod 804, thereby realizing the unfolding of the leg support.

[0039] Specifically, a connecting rod 6 is rotatably mounted on the end of the adjusting rod 2 7 away from the anti-pinch component 8. The connecting rod 6 is connected to the adjusting frame 2. A connecting rod 3 10 is provided on the end of the adjusting frame 2 near the base frame 1. The advantage is that the power of the adjusting frame 2 is transmitted to the adjusting rod 2 7 through the connecting rod 2 6, which works in conjunction with the adjusting rod 1 5 to drive the anti-pinch component 8 to move, ensuring that the force on both sides of the leg support is balanced. In addition, the connecting rod 3 10 reinforces the connection between the adjusting frame 2 and the base frame 1, preventing the frame from deforming when the leg support is adjusted.

[0040] Working principle: During use, the anti-pinch sleeve 801 is connected to the connecting handle 806 through the connecting hole 802. When rotating, the anti-pinch sleeve 801 can rotate around the connecting hole 802, allowing the end of the anti-pinch sleeve 801 away from the connecting hole 802 to detach from the connecting handle 806, thus achieving angle adjustment. If the user accidentally gets their clothing caught, it can be easily and quickly removed. The arc-shaped adjustment groove 805 guides the fixed rod 807 to move along the preset adjustment groove 805, preventing excessive swinging and excessive opening / closing angles. With the positioning hole 808, a limit pin can be inserted to further constrain the movement stroke, making the positions of the fixed rod 804 and the fixed rod 807 relatively stable, preventing excessive anti-pinch gaps due to excessive movement. The fixed rod 804 and the fixed rod 807 are rotatably connected, and a limit component can be installed in the positioning hole 809 of the fixed rod 807. When adjusting, the rotatable connection allows both to move flexibly with the leg support. The adjustable angle accommodates the unfolding and retracting of the leg rest. Positioning hole 809, via a pin or bolt, further limits the maximum opening angle to prevent excessive separation. Connecting handle 810 acts as an intermediate transmission component, converting the telescopic movement of adjusting rod 5 and adjusting rod 7 into the rotational movement of fixed rod 807, synchronously adjusting the position of anti-pinch component 8. This allows the leg rest adjustment and anti-pinch protection to be synchronized. Through the cooperation of connecting handle 810 with adjusting rods 5 and 7, when the driving force of the adjusting frame 2 is transmitted to adjusting rod 5 via connecting rod 4, it rotates, which in turn drives the anti-pinch sleeve 801 via spring 9 and fixed rod 804, unfolding the leg rest. Connecting rod 6 transmits the power of the adjusting frame 2 to adjusting rod 7, which, together with adjusting rod 5, drives the anti-pinch component 8, ensuring balanced force on both sides of the leg rest. Connecting rod 10 reinforces the connection between the adjusting frame 2 and the base frame 1, preventing frame deformation during leg rest adjustment.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leg support anti-pinch structure for an electric sofa, comprising a base frame (1) and an adjustable frame (2), characterized in that: The backrest frame (3) is rotatably mounted on the end of the adjustable frame (2) away from the base frame (1). Adjusting rod 1 (5) and adjusting rod 2 (7) are rotatably mounted on the end of the adjustable frame (2) away from the backrest frame (3). The end of adjusting rod 2 (7) away from adjusting rod 1 (5) is rotatably connected to the anti-pinch component (8). The anti-pinch component (8) is rotatably mounted on the end of the adjustable frame (2) away from the backrest frame (3). A spring (9) is fixedly mounted on the end of the anti-pinch component (8) near the backrest frame (3). The anti-pinch assembly (8) includes an anti-pinch sleeve (801), a first fixing rod (804) and a second fixing rod (807). The first fixing rod (804) and the second fixing rod (807) are rotatably mounted to the anti-pinch sleeve (801). A protrusion (803) is fixedly mounted on one end of the anti-pinch sleeve (801) near the first fixing rod (804) and the second fixing rod (807). One end of the protrusion (803) is fixedly mounted to a spring (9). The end of the spring (9) away from the protrusion (803) is fixedly mounted to an adjusting rod (5).

2. The anti-pinch structure for the leg rest of an electric sofa according to claim 1, characterized in that: The anti-pinch sleeve (801) has a connecting hole (802) at one end, and a connecting handle (806) is fixedly installed at the end of the fixing rod (804) near the anti-pinch sleeve (801). The anti-pinch sleeve (801) and the connecting handle (806) are rotatably installed through the connecting hole (802).

3. The anti-pinch structure for the leg rest of an electric sofa according to claim 2, characterized in that: The first fixing rod (804) has an adjustment groove (805) at the end away from the first connecting handle (806), and the second fixing rod (807) has a positioning hole (808) at the end near the adjustment groove (805). The adjustment groove (805) has an arc-shaped cross-section, and the positioning hole (808) and the adjustment groove (805) are located on the same plane.

4. The anti-pinch structure for the leg rest of an electric sofa according to claim 3, characterized in that: The first fixing rod (804) and the second fixing rod (807) are rotatably connected, and the second fixing rod (807) has a positioning hole (809) at the end away from the first connecting handle (806).

5. The anti-pinch structure for the leg rest of an electric sofa according to claim 1, characterized in that: The fixed rod 2 (807) is fixedly installed with a connecting handle 2 (810) at the end away from the connecting handle 1 (806). The fixed rod 2 (807) is rotatably installed with the adjusting rod 1 (5) and the adjusting rod 2 (7) through the connecting handle 2 (810).

6. The anti-pinch structure for the leg rest of an electric sofa according to claim 1, characterized in that: The end of the adjusting rod (5) away from the anti-pinch component (8) is rotatably mounted with a connecting rod (4), which is connected to the adjusting frame (2).

7. The anti-pinch structure for the leg rest of an electric sofa according to claim 1, characterized in that: The second adjusting rod (7) is rotatably mounted with a second connecting rod (6) at the end away from the anti-pinch component (8). The second connecting rod (6) is connected to the adjusting frame (2). The third connecting rod (10) is provided at the end of the adjusting frame (2) near the base frame (1).

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