Deck chair with angle limiting function

Abstract

The utility model discloses a reclining chair with an angle limiting function. The reclining chair comprises a bracket; one end of the sliding pipe sleeve is fixedly arranged on the bracket, and the other end of the sliding pipe sleeve obliquely extends forwards upwards; the middle lower part of the backrest is rotationally connected to the bracket; the rear end of the seat is rotationally connected with the lower end of the backrest, a connecting rod is pivoted to the front end of the seat, and the end, away from the seat, of the connecting rod is slidably inserted into the sliding pipe sleeve; and the automatic limiting mechanism is arranged between the connecting rod and the sliding pipe sleeve, can overcome the gravity moment of the backrest acting on the bracket so as to stabilize the angle position of the backrest, and can be unlocked when the seat is pressed so as to enable the connecting rod to freely slide relative to the sliding pipe sleeve. When the deck chair is not used, the automatic limiting mechanism can overcome the gravity moment of the backrest acting on the support, so that the backrest is maintained at the sitting angle to reduce the storage area, and when a user sits on the chair, the automatic limiting mechanism can be unlocked to enable the connecting rod to freely slide relative to the sliding pipe sleeve, so that the angle position of the backrest is smoothly adjusted.

Description

Technical Field

[0001] This utility model relates to a recliner with angle limiting. Background Technology

[0002] In the prior art, some recliners use the following common recliner structure to achieve backrest angle adjustment: including a frame, backrest, seat, sliding sleeve, and connecting rod. The lower middle part of the backrest is rotatably connected to the frame, the rear end of the seat is rotatably connected to the lower end of the backrest, the front end of the seat is rotatably connected to one end of the connecting rod, the sliding sleeve is fixedly mounted on the frame, and the other end of the connecting rod is slidably extended and retracted within the sliding sleeve.

[0003] To lock the backrest angle while facilitating user adjustment, a locking rod is typically threaded onto the side wall of the sliding sleeve. The end of the locking rod presses against the connecting rod, preventing it from moving relative to the sliding sleeve. However, in actual use, when switching from a reclining to a sitting position to leave the recliner, the user first unlocks the locking rod, then bends forward to shift their weight, and then leaves the recliner. After leaving the recliner, the locking rod no longer acts on the connecting rod, allowing it to slide freely relative to the sliding sleeve. This creates a gravitational torque that drives the backrest to rotate backward, resulting in the recliner being in an open position when not in use. This leads to a large footprint and difficulty in storage. Furthermore, when the user sits back down, the backrest rotates rapidly forward, impacting the user's back forcefully, creating a poor user experience. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a recliner with an angle limit, which maintains the backrest at the sitting angle when the recliner is not in use to reduce the storage area, and allows the angle position of the backrest to be smoothly adjusted when a person is sitting on the chair.

[0005] A recliner with angle limiting according to an embodiment of the present invention includes: a support frame; a sliding sleeve, one end of which is fixed to the support frame and the other end of which extends forward at an angle upward; a backrest, the lower middle part of which is rotatably connected to the support frame; a seat, the rear end of which is rotatably connected to the lower end of the backrest, and a connecting rod pivotally connected to the front end of the seat, the end of which is slidably inserted into the sliding sleeve; and an automatic limiting mechanism, disposed between the connecting rod and the sliding sleeve, which can overcome the gravitational torque of the backrest acting on the support frame to stabilize the angle position of the backrest, and can be unlocked when the seat is pressed to allow the connecting rod to slide freely relative to the sliding sleeve.

[0006] The recliner with angle limiting according to an embodiment of the present invention has at least the following features:

[0007] Beneficial effects:

[0008] The recliner with angle limiting structure described above has an automatic limiting mechanism between the connecting rod and the sliding sleeve. The automatic limiting mechanism can overcome the gravitational torque of the backrest acting on the support, so that the backrest is maintained at the sitting angle when the recliner is not in use to reduce the storage area. When the user sits on the chair, the automatic limiting mechanism can be unlocked to allow the connecting rod to slide freely relative to the sliding sleeve, thereby smoothly adjusting the angle position of the backrest.

[0009] In some embodiments of this utility model, the automatic limiting mechanism includes a limiting member that can move radially and retractably along the sliding sleeve and an elastic member that drives the limiting member to move radially inward along the sliding sleeve to abut against the outer peripheral wall of the connecting rod. When the seat is pressed, it drives the connecting rod to insert into the sliding sleeve and drives the limiting member to reset and compress the elastic member.

[0010] In some embodiments of this utility model, a sleeve matching the diameter of the connecting rod is provided inside the end of the sliding sleeve, the side wall of the sleeve is provided with a notch, the limiting member is a swing arm connected to the sleeve and located in the notch, there is an installation gap between the outer peripheral wall of the sleeve and the inner peripheral wall of the sliding sleeve, and the elastic member is a spring piece provided in the installation gap to abut the swing arm against the outer side wall of the connecting rod.

[0011] In some embodiments of this utility model, the swing arm is part of the side wall of the sleeve, and there are strip-shaped gaps between the opposite sides of the swing arm and the sleeve that form the notch.

[0012] In some embodiments of this utility model, the swing arm is located on the lower side of the circumferential wall plate of the sleeve, the spring is located on the lower side of the portion of the sliding sleeve corresponding to the sleeve, and when the seat is pressed, it drives the connecting rod to apply downward pressure to the swing arm and the spring so that the connecting rod can slide freely relative to the sliding sleeve.

[0013] In some embodiments of this utility model, the spring includes a first elongated segment and a second elongated segment that are parallel to each other. One end of the first elongated segment and one end of the second elongated segment are connected to form a U-shape. Both the first elongated segment and the second elongated segment have a V-shaped bend that protrudes away from the outer peripheral wall of the sleeve. The V-shaped bend abuts against the inner peripheral wall of the sliding sleeve to drive the swing arm to abut against the outer wall of the connecting rod.

[0014] In some embodiments of this utility model, the outer peripheral wall of the sleeve is provided with two fitting positioning grooves that respectively match the first elongated segment and the second elongated segment.

[0015] In some embodiments of this utility model, the outer peripheral wall of the sleeve is provided with a plurality of spaced ribs extending along its length, and an insert positioning groove is defined between adjacent ribs. The U-shaped corner of the spring abuts against the end of the rib to prevent the spring from moving along the length of the sleeve.

[0016] In some embodiments of this utility model, a limiting sleeve is provided at one end of the connecting rod that is rotatably connected to the seat, and a stop annular surface is provided at the end of the sleeve facing the limiting sleeve. A pulley is provided at one end of the connecting rod that extends into the sliding sleeve and contacts the inner wall of the sliding sleeve. The pulley is disposed opposite to the end of the sleeve that is away from the stop annular surface.

[0017] In some embodiments of this utility model, the side of the sliding sleeve is threadedly connected with a locking rod for pressing against the outer peripheral wall of the connecting rod.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a structural schematic diagram of one embodiment of the recliner with angle limiting according to this utility model;

[0021] Figure 2 yes Figure 1 A cross-sectional schematic diagram of an embodiment;

[0022] Figure 3 yes Figure 2 A schematic diagram of the decomposition of the local structure;

[0023] Figure 4 It is a schematic diagram of the combination of sleeve, limiting component and elastic component.

[0024] Figure label:

[0025] 100 bracket; 200 sliding sleeve; 210 sleeve; 211 stop annular surface; 220 notch; 230 mounting and positioning groove; 240 rib; 300 backrest; 400 seat; 500 connecting rod; 510 limiting sleeve; 520 pulley; 600 automatic limiting mechanism; 610 limiting component; 620 elastic component; 621 first long strip; 622 second long strip; 623 V-shaped bend; 700 locking rod. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] See Figure 1 and Figure 2This utility model discloses a recliner with angle limiting, comprising: a support frame 100; a sliding sleeve 200, one end of which is fixed to the support frame 100, and the other end extending forward at an angle upward; a backrest 300, the lower middle part of which is rotatably connected to the support frame 100; a seat 400, the rear end of which is rotatably connected to the lower end of the backrest 300, and a connecting rod 500 pivotally connected to the front end of the seat 400, the end of which is slidably inserted into the sliding sleeve 200 away from the seat 400; and an automatic limiting mechanism 600, disposed between the connecting rod 500 and the sliding sleeve 200, capable of overcoming the gravitational torque exerted by the backrest 300 on the support frame 100 to stabilize the angle position of the backrest 300, and capable of being unlocked when the seat 400 is pressed to allow the connecting rod 500 to slide freely relative to the sliding sleeve 200.

[0031] The recliner with angle limiting structure described above has an automatic limiting mechanism 600 between the connecting rod 500 and the sliding sleeve 200. The automatic limiting mechanism 600 can overcome the gravitational torque of the backrest 300 acting on the support 100, so that the backrest 300 is maintained at the sitting angle when the recliner is not in use to reduce the storage area. When the user sits on the seat 400, the automatic limiting mechanism 600 can be unlocked to allow the connecting rod 500 to slide freely relative to the sliding sleeve 200, thereby smoothly adjusting the angle position of the backrest 300.

[0032] See Figure 2 and Figure 3 In some embodiments of this utility model, the automatic limiting mechanism 600 includes a limiting member 610 that can move radially along the sliding sleeve 200 and an elastic member 620 that drives the limiting member 610 to move radially inward along the sliding sleeve 200 to abut against the outer peripheral wall of the connecting rod 500. When the seat 400 is pressed, it drives the connecting rod 500 to insert into the sliding sleeve 200 and drives the limiting member 610 to reset and compress the elastic member 620. Understandably, under the action of the elastic element 620, the limiting element 610 moves radially inward toward the sliding sleeve 200, so that the limiting element 610 elastically abuts against the outer peripheral wall of the connecting rod 500. The static friction between the limiting element 610 and the connecting rod 500 overcomes the gravitational torque that drives the backrest 300 to rotate backward. When the user sits on the seat 400, the front end of the seat 400 swings downward to drive the connecting rod 500 to slide in the direction of inserting into the sliding sleeve 200. Generally speaking, there is a fitting gap between the connecting rod 500 and the sliding sleeve 200. When the connecting rod 500 is subjected to the force of the seat 400, it also has a swinging tendency and abuts against the limiting element 610 in the direction of compressing the elastic element 620. The connecting rod 500 can then slide smoothly relative to the sliding sleeve 200.

[0033] See Figure 3and Figure 4 In some embodiments of this utility model, a sleeve 210 matching the diameter of the connecting rod 500 is provided inside the end of the sliding sleeve 200. A notch 220 is provided on the side wall of the sleeve 210. The limiting member 610 is a swing arm connected to the sleeve 210 and located within the notch 220. An installation gap exists between the outer peripheral wall of the sleeve 210 and the inner peripheral wall of the sliding sleeve 200. The elastic member 620 is a spring piece disposed within the installation gap to abut the swing arm against the outer peripheral wall of the connecting rod 500. Under the action of the spring piece, the swing arm tilts towards the central axis of the connecting rod 500, thereby elastically abutting against the outer peripheral wall of the connecting rod 500. The static friction between the swing arm and the outer peripheral wall of the connecting rod 500 can overcome the gravitational torque of the backrest 300 acting on the support 100, allowing the recliner to maintain the backrest 300 at a sitting angle when not in use. Of course, in other embodiments, the elastic element 620 can also be replaced by a compression spring.

[0034] See Figure 4 In some embodiments of this utility model, the swing arm is part of the side wall of the sleeve 210, and there is a strip-shaped gap between the opposite sides of the swing arm and the sleeve 210 forming the notch 220. Specifically, the sleeve 210 and the swing arm are integrally injection molded from plastic, eliminating the need for an assembly structure between the swing arm and the sleeve 210, greatly simplifying the production process, and ensuring a stable and reliable connection between one end of the swing arm and the sleeve 210. Of course, in other embodiments, the sleeve 210 and the swing arm can also be made of a thin-walled metal material with elastic deformation capability, such as steel sheet, with the aforementioned strip-shaped gap formed by mechanical cutting.

[0035] See Figure 2 and Figure 4 In some embodiments of this utility model, the swing arm is located on the lower side of the circumferential wall plate of the sleeve 210, and the spring is located on the lower side of the portion of the sliding sleeve 200 corresponding to the sleeve 210. When the seat 400 is pressed, it drives the connecting rod 500 to apply downward pressure to the swing arm and the spring, so that the connecting rod 500 can slide freely relative to the sliding sleeve 200. It should be noted that since the sliding sleeve 200 is inclined upward and forward, and the connecting rod 500 is also parallel to the sliding sleeve 200, when the user sits on the seat 400, the seat 400 transmits pressure to the connecting rod 500. The connecting rod 500 is slightly displaced in the radial outward direction of the sleeve 210 to reset the swing arm and restore the deformation of the spring. Under these conditions, the connecting rod 500 can slide easily relative to the sliding sleeve 200.

[0036] See Figure 3 and Figure 4In some embodiments of this utility model, the spring sheet includes a first elongated segment 621 and a second elongated segment 622 that are parallel to each other. One end of the first elongated segment 621 and one end of the second elongated segment 622 are connected to form a U-shape. Both the first elongated segment 621 and the second elongated segment 622 have a V-shaped bend 623 that protrudes away from the outer peripheral wall of the sleeve 210. The V-shaped bend 623 abuts against the inner peripheral wall of the sliding sleeve 200 to drive the swing arm against the outer wall of the connecting rod 500. The spring sheet with the above structure utilizes the tight fit between the V-shaped bend 623 and the inner peripheral wall of the sliding sleeve 200 to form a large elastic abutment force at the connection between the first elongated segment 621 and the second elongated segment 622, which helps to form a large and stable static friction force between the swing arm and the outer peripheral wall of the connecting rod 500.

[0037] See Figure 3 and Figure 4 In some embodiments of this utility model, in order to limit the displacement of the spring relative to the sleeve 210 and ensure that the automatic limiting mechanism 600 can be automatically unlocked when the seat 400 is pressed, the outer peripheral wall of the sleeve 210 is provided with two fitting positioning grooves 230 that respectively match the first long strip 621 and the second long strip 622.

[0038] See Figure 4 In some embodiments of this utility model, the outer peripheral wall of the sleeve 210 is provided with multiple spaced ribs 240 extending along its length. An embedded positioning groove 230 is defined between adjacent ribs 240. The U-shaped corner of the spring abuts against the end of the rib 240 to prevent the spring from moving along the length of the sleeve 210. It is understood that the multiple ribs 240 abut against the inner peripheral wall of the sliding sleeve 200, which helps ensure that the sleeve 210 and the sliding sleeve 200 are concentrically positioned, and also serves to position the spring, achieving a dual-purpose effect.

[0039] See Figure 2 and Figure 3In some embodiments of this utility model, a limiting sleeve 510 is fitted onto one end of the connecting rod 500 that is rotatably connected to the seat 400. A stop annular surface 211 is provided on the end face of the sleeve 210 facing the limiting sleeve 510. A pulley 520 is provided at one end of the connecting rod 500 that extends into the sliding sleeve 200 and contacts the inner wall of the sliding sleeve 200. The pulley 520 is positioned opposite to the end of the sleeve 210 away from the stop annular surface 211. It can be understood that the limiting sleeve 510 abuts against the stop annular surface 211 to limit the maximum depth of the connecting rod 500 inserted into the sliding sleeve 200, thereby limiting the sitting angle of the recliner. The pulley 520 abuts against the sleeve 210 to limit the maximum distance the connecting rod 500 extends out of the sliding sleeve 200, thereby limiting the maximum reclining angle of the recliner.

[0040] See Figure 1 In some embodiments of this utility model, the sliding sleeve 200 is threadedly connected to a locking rod 700 for pressing against the outer peripheral wall of the connecting rod 500. When the user wants to fix the angle of the backrest 300, he / she tightens the locking rod 700 so that the end of the locking rod 700 abuts against the outer peripheral wall of the connecting rod 500.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A recliner with angle limiting, characterized in that, include: Bracket (100); The sliding sleeve (200) is fixed at one end to the bracket (100) and extends forward at an inclined upward direction at the other end; Backrest (300), the lower middle part of which is rotatably connected to the bracket (100); A seat (400) is rotatably connected to the lower end of the backrest (300) at its rear end, and a connecting rod (500) is pivotally connected to the front end of the seat (400). The end of the connecting rod (500) away from the seat (400) is slidably inserted into the sliding sleeve (200). An automatic limiting mechanism (600) is provided between the connecting rod (500) and the sliding sleeve (200). It can overcome the gravitational torque of the backrest (300) acting on the bracket (100) to stabilize the angular position of the backrest (300). When the seat (400) is pressed, it can be unlocked to allow the connecting rod (500) to slide freely relative to the sliding sleeve (200).

2. A recliner with angle limiting according to claim 1, characterized in that: The automatic limiting mechanism (600) includes a limiting member (610) that can move radially along the sliding sleeve (200) and an elastic member (620) that drives the limiting member (610) to move radially inward along the sliding sleeve (200) to abut against the outer peripheral wall of the connecting rod (500). When the seat (400) is pressed, it drives the connecting rod (500) to insert into the sliding sleeve (200) and drives the limiting member (610) to reset and compress the elastic member (620).

3. A recliner with angle limiting according to claim 2, characterized in that: The end of the sliding sleeve (200) is provided with a sleeve (210) that matches the diameter of the connecting rod (500). The side wall of the sleeve (210) is provided with a notch (220). The limiting member (610) is a swing arm connected to the sleeve (210) and located in the notch (220). There is an installation gap between the outer peripheral wall of the sleeve (210) and the inner peripheral wall of the sliding sleeve (200). The elastic member (620) is a spring piece provided in the installation gap to abut the swing arm against the outer side wall of the connecting rod (500).

4. A recliner with angle limiting according to claim 3, characterized in that: The swing arm is part of the side wall of the sleeve (210), and there are strip-shaped gaps between the opposite sides of the swing arm and the sleeve (210) that form the notch (220).

5. A recliner with angle limiting according to claim 3, characterized in that: The swing arm is located on the lower side of the circumferential wall plate of the sleeve (210), and the spring is located on the lower side of the portion of the sliding sleeve (200) corresponding to the sleeve (210). When the seat (400) is pressed, it drives the connecting rod (500) to apply downward pressure to the swing arm and the spring so that the connecting rod (500) can slide freely relative to the sliding sleeve (200).

6. A recliner with angle limiting according to claim 5, characterized in that: The spring includes a first elongated segment (621) and a second elongated segment (622) that are parallel to each other. One end of the first elongated segment (621) and one end of the second elongated segment (622) are connected to form a U-shape. Both the first elongated segment (621) and the second elongated segment (622) have a V-shaped bend (623) that protrudes away from the outer peripheral wall of the sleeve (210). The V-shaped bend (623) abuts against the inner peripheral wall of the sliding sleeve (200) to drive the swing arm to abut against the outer wall of the connecting rod (500).

7. A recliner with angle limiting according to claim 6, characterized in that: The outer peripheral wall of the sleeve (210) is provided with two fitting positioning grooves (230) that respectively match the first elongated segment (621) and the second elongated segment (622).

8. A recliner with angle limiting according to claim 7, characterized in that: The outer peripheral wall of the sleeve (210) is provided with a plurality of spaced ribs (240) extending along its length. An insert positioning groove (230) is defined between adjacent ribs (240). The U-shaped corner of the spring abuts against the end of the rib (240) to prevent the spring from moving along the length of the sleeve (210).

9. A recliner with angle limiting according to claim 3, characterized in that: A limiting sleeve (510) is fitted onto one end of the connecting rod (500) that is rotatably connected to the seat (400). The end face of the sleeve (210) facing the limiting sleeve (510) is a stop annular surface (211). One end of the connecting rod (500) that extends into the sliding sleeve (200) is provided with a pulley (520) that contacts the inner wall of the sliding sleeve (200). The pulley (520) is positioned opposite to the end of the sleeve (210) that is away from the stop annular surface (211).

10. A recliner with angle limiting according to claim 1, characterized in that: The sliding sleeve (200) is threaded to the side with a locking rod (700) for pressing against the outer peripheral wall of the connecting rod (500).

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