Sliding groove type shank anti-pinch chair frame

Abstract

The utility model discloses a chute type shank anti-pinch chair frame, which comprises a base, a sitting and leaning frame and a shank frame, the sitting and leaning frame is rotatably arranged on the base, the shank frame is hinged on the sitting and leaning frame, an extension arm is further arranged on the shank frame, and a limiting chute is arranged on the base corresponding to the extension arm. The bottom of the extension arm slides on the limiting sliding groove in a guiding mode, a clamping groove is formed in the side, facing the base, of the extension arm, a shaft body capable of being matched with the clamping groove is arranged on the base, when the rear side of the shank frame makes contact with a foreign matter, the extension arm is stressed so that the clamping groove can be separated from the shaft body, and clamping prevention is conducted in a mechanical tripping mode; as a fulcrum, the mechanical buckle on the shank frame can be disengaged, so that foreign matter is prevented from being damaged by clamping, the avoiding angle of the mechanical buckle can be increased by adopting the limiting sliding groove, and excessive rotation can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of massagers, in particular to a slide groove type calf anti-pinch chair frame. Background Art

[0002] In the prior art, a massage chair includes a calf frame and a seat frame. The calf frame can be rotated, raised or lowered relative to the seat frame. However, when the calf frame is lowered, it is easy to clamp foreign objects on the back of the calf, and there are no protective measures. In addition, it is not easy to observe when a person lies flat on the massage chair. At this time, if a part of a person or an animal is located here, it is easy to be clamped and injured. Therefore, further improvements are needed to address this defect. Summary of the invention

[0003] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a slide groove type calf anti-pinch chair frame, which adopts a mechanical disengagement method to prevent pinching. When foreign matter enters the rear side of the calf frame, it can act as a fulcrum to disengage the mechanical buckle on the calf frame to prevent the foreign matter from being pinched and damaged. The use of a limiting slide groove can increase its avoidance angle and prevent excessive rotation.

[0004] The utility model discloses a slide groove type calf anti-pinch chair frame, comprising a seat frame rotatably arranged on the base and a calf frame hingedly arranged on the seat frame, characterized in that: the calf frame is also provided with an extension arm, a limiting slide groove is arranged on the base corresponding to the position of the extension arm, the bottom guide of the extension arm slides on the limiting slide groove, a clamping groove is arranged on the side of the extension arm facing the base, and a shaft body that can cooperate with the clamping groove is arranged on the base, and when the rear side of the calf frame contacts with a foreign object, the extension arm is subjected to force to make the clamping groove separate from the shaft body.

[0005] By adopting the above technical solution, when a foreign object presses against the back side of the calf frame, the foreign object will be used as a fulcrum to apply force to the position of the extension arm. At this time, the card slot will be separated from the shaft body due to the influence of external force. At this time, the extension arm slides along the limiting slide groove to form an avoidance rotation action, and the limiting slide groove is used to increase the avoidance space, so that the anti-pinch effect is better, and it is most preferred to set the extension arm at the top position of the calf frame, which is formed by a straight section and an inclined section. When the calf frame is rotated and lowered, when the foreign object is against the back side of the calf frame, its top rotation avoidance can make its reaction faster, and the use of the straight section and the inclined section can facilitate its installation and cooperation with the shaft body.

[0006] The utility model is further configured as follows: an armrest frame for assembling the shaft body is arranged on the base, a mounting plate is further arranged on the armrest frame, and the limiting slide groove is arranged on the mounting plate.

[0007] The above technical solution can facilitate the installation of the mounting plate and the shaft body, making it more stable during use.

[0008] A further configuration of the present invention is that the limiting sliding groove is arranged in an arc shape.

[0009] By adopting the above technical solution, when the slot is separated from the shaft body, it can be convenient for it to rotate in the opposite direction along the circumference to avoid it, thereby further improving the anti-pinch effect.

[0010] The utility model is further configured as follows: two support plates are arranged at intervals, a reinforcing rod is arranged between the two support plates, the support plates are fixedly arranged on the seat frame, an arc-shaped hinge head is arranged on the head of the support plate, and an articulated seat for articulating the arc-shaped hinge head is arranged on the calf frame.

[0011] By adopting the above technical solution, when the slot is separated from the shaft, the calf frame can rotate relatively. The arc-shaped hinge head and the hinge seat cooperate to facilitate the relative rotation when avoiding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model;

[0013] Figure 2 for Figure 1 Side view;

[0014] Figure 3 It is a partial structural schematic diagram of the utility model;

[0015] Figure 4 for Figure 1 Enlarged view of part a. DETAILED DESCRIPTION

[0016] The following is a detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings:

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "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 invention and simplifying the description, and do not indicate or imply 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 invention.

[0018] The utility model discloses a slide groove type calf anti-pinch chair frame, including a base 1, a seat frame 2 rotatably arranged on the base 1, and a calf frame 3 hingedly arranged on the seat frame 2. (Both the calf frame 3 and the seat frame 2 can be driven by an electric push rod, which is common knowledge among technicians in this field and will not be introduced in detail in this article.) In the implementation case of the utility model, the calf frame 3 is also provided with an extension arm 4, and a limiting slide groove 5 is provided on the base 1 corresponding to the position of the extension arm 4. The bottom guide of the extension arm 4 slides on the limiting slide groove 5, and a card slot 41 is provided on the side of the extension arm 4 facing the base 1. The base 1 is provided with a shaft body 6 that can cooperate with the card slot 41. When the rear side of the calf frame 3 contacts with foreign objects, the extension arm 4 is subjected to force to cause the card slot 41 to separate from the shaft body 6.

[0019] By adopting the above technical solution, when a foreign object presses against the back side of the calf frame 3, the foreign object will be used as a fulcrum to apply force to the position of the extension arm 4. At this time, the slot 41 is separated from the shaft body 6 by the influence of external force. At this time, the extension arm 4 slides along the limiting slide groove 5 to form an avoidance rotation action, and the limiting slide groove 5 is used to increase the avoidance space, so that the anti-pinch effect is better, and it is most preferred to set the extension arm 4 at the top position of the calf frame 3, which is formed by a straight section and an inclined section. When the calf frame 3 is rotated and lowered, when the foreign object is against the back side of the calf frame 3, its top rotation avoidance can make its reaction faster, and the use of the straight section and the inclined section can facilitate its installation and cooperation with the shaft body.

[0020] The base 1 is provided with an armrest frame 7 for assembling the shaft body 6, and the armrest frame 7 is also provided with a mounting plate 71. The limiting slide groove 5 is provided on the mounting plate 71, which can facilitate the installation of the mounting plate 71 and the shaft body 6, making it more stable when in use. The extension arm 4 is most preferably located on opposite sides of the mounting plate 71, and then the limiting slide groove 5 is passed through the shaft body.

[0021] The limiting sliding groove 5 is arranged in an arc shape, and when the clamping groove 41 is separated from the shaft body 6, it can be convenient for it to rotate in the opposite direction along the circumference to avoid it, thereby further improving the anti-pinch effect.

[0022] It also includes two support plates 8 arranged at intervals, a reinforcing rod 9 is arranged between the two support plates 8, the support plates 8 are fixedly arranged on the seat frame 2, the head of the support plates 8 is provided with an arc-shaped hinge head, and the calf frame 3 is provided with an articulation seat 20 for the arc-shaped articulation head 10 to be articulated. When the slot 41 is separated from the shaft body 6, the calf frame 3 can rotate relatively. The arc-shaped articulation head 10 and the articulation seat 20 are used to cooperate, which can facilitate its relative rotation when avoiding.

Claims

1. A sliding groove type calf anti-pinch chair frame, comprising a base (1), a seat frame (2) rotatably arranged on the base (1), and a calf frame (3) hingedly arranged on the seat frame (2), characterized in that: The calf frame (3) is also provided with an extension arm (4), and a limiting slide groove (5) is provided on the base (1) at a position corresponding to the extension arm (4). The bottom of the extension arm (4) is guided and slides on the limiting slide groove (5), and a clamping groove (41) is provided on the side of the extension arm (4) facing the base (1). The base (1) is provided with a shaft body (6) that can cooperate with the clamping groove (41). When the rear side of the calf frame (3) contacts with a foreign object, the extension arm (4) is subjected to force to cause the clamping groove (41) to separate from the shaft body (6).

2. The sliding groove type anti-clip calf chair frame according to claim 1, characterized in that: The base (1) is provided with an armrest frame (7) for assembling the shaft body (6), and the armrest frame (7) is also provided with a mounting plate, and the limiting slide groove (5) is provided on the mounting plate.

3. A sliding groove type calf anti-pinch chair frame according to claim 1 or 2, characterized in that: The limiting sliding groove (5) is arranged in an arc shape.

4. The sliding groove type anti-clip calf chair frame according to claim 3, characterized in that: It also includes two support plates (8) arranged at intervals, a reinforcing rod (9) being arranged between the two support plates (8), a portion of the support plate (8) being fixedly arranged on the seat frame (2), a head of the support plate (8) being provided with an arc-shaped hinged head (10), and a hinged seat (20) being provided on the calf frame (3) for hinged connection of the arc-shaped hinged head (10).

5. A sliding groove type calf anti-pinch chair frame according to claim 1 or 2, characterized in that: The extension arm (4) is arranged at the top of the calf frame (3) and is formed by a straight section and an inclined section.

Images