Seat armrest heightening device

Abstract

The utility model discloses a seat armrest heightening device which comprises a guide lifting mechanism, a pulley winch mechanism and a rope, and the guide lifting mechanism comprises a bottom plate stably connected with a seat armrest, a liftable top plate and a buffer guide assembly arranged between the bottom plate and the top plate. The pulley winch mechanism is correspondingly arranged on the bottom plate and the top plate, one end of the rope is wound on the pulley winch mechanism, the other end of the rope is fixed on the bottom plate, when the pulley winch mechanism is rotated in the forward direction, the rope pulls the top plate to move in the direction close to the bottom plate and synchronously compresses the buffering guide assembly, and when the pulley winch mechanism is rotated in the reverse direction, the rope pulls the top plate to move in the direction close to the bottom plate. The lifting of the top plate is buffered through the buffering and guiding assembly, pressing impact of arms is effectively dealt with, the fracture problem is avoided, a pure rigid support is replaced by the buffering system, comfort is improved, and compared with a threaded screw, the maintenance cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of armrest heightening pad technology, specifically a seat armrest heightening device. Background Technology

[0002] Users typically install armrest lifts on their chairs to keep their elbows at the same height as the desk, making them more comfortable and reducing fatigue. However, most lifters are not height-adjustable and cannot reach a specific elbow height.

[0003] Authorization notice number CN218164664U discloses a handrail heightening bracket. The adjustment screw's annular groove engages with a limiting slot on the right side of the cover plate, thus limiting the screw's rotational position. Through the engagement of the adjustment screw with the external slider on the right side, the slider can be slidably adjusted within the frame.

[0004] However, this type of handrail heightening bracket has many hinges, which requires high assembly precision. It is also prone to breakage due to insufficient resistance to pressure and impact, and the threaded screws are easy to wear and difficult to maintain. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] Therefore, the purpose of this utility model is to provide a seat armrest raising device that uses spring buffer to effectively cope with the impact of arm pressure and increase comfort; compared with threaded screws, it has lower maintenance costs.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A seat armrest raising device, comprising:

[0009] The guide lifting mechanism includes a base plate stably connected to the seat armrest, a liftable top plate, and a buffer guide assembly disposed between the base plate and the top plate;

[0010] A pulley winch mechanism is correspondingly arranged on the bottom plate and the top plate;

[0011] One end of the rope is wound around the pulley winch mechanism, and the other end is fixed to the base plate;

[0012] When the pulley winch mechanism is rotated in the forward direction, the rope pulls the top plate toward the bottom plate and simultaneously compresses the buffer guide assembly. When the pulley winch mechanism is rotated in the reverse direction, the buffer guide assembly is simultaneously compressed and lifts the top plate upward.

[0013] As a preferred embodiment of the seat armrest heightening device of this utility model, the buffer guide assembly includes guide posts vertically arranged on the four corners of the top plate and elastic components sleeved on the guide posts.

[0014] The base plate has guide holes at its four corners for the guide posts to pass through.

[0015] As a preferred embodiment of the seat armrest raising device of this utility model, the pulley winch mechanism includes a first pulley and a second pulley fixed on the top plate and a limiting winch set on the bottom plate, wherein the front end of the limiting winch has an iron hoist structure.

[0016] The first end of the rope is wound around the limiting winch and passes through the first pulley and the second pulley in sequence before the last end is fixed to the base plate.

[0017] In a preferred embodiment of the seat armrest raising device described in this utility model, the base plate is provided with a connecting ring, and the tail end of the rope is wrapped around and fixed to the connecting ring.

[0018] As a preferred embodiment of the seat armrest heightening device described in this utility model, the four corners of the base plate are provided with straps, and the straps are used with Velcro to fix the base plate to the seat armrest.

[0019] In a preferred embodiment of the seat armrest raising device described in this utility model, the limiting winch has a handle.

[0020] Compared with the prior art, the advantages of this utility model are: the utility model effectively copes with the impact of arm pressing by buffering the lifting and lowering of the top plate through the buffer guide component, avoiding the problem of breakage. In addition, the buffer system replaces the pure rigid bracket, increasing comfort and reducing maintenance costs compared with threaded screws. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1This is a schematic diagram of the overall structure of a seat armrest heightening device according to the present invention. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] This invention provides a seat armrest raising device that uses spring cushioning to effectively cope with the impact of arm pressure while increasing comfort; compared with threaded screws, it has lower maintenance costs.

[0025] Figure 1 The diagram shown is a structural schematic of one embodiment of the seat armrest raising device of this utility model. Please refer to [link / reference]. Figure 1 This embodiment of a seat armrest raising device includes a guide lifting mechanism 100, a pulley winch mechanism 200, and a rope 300.

[0026] The guide lifting mechanism 100 includes a base plate 110 stably connected to the seat armrest, a liftable top plate 120, and a buffer guide assembly 130 disposed between the base plate 110 and the top plate 120. In this embodiment, the buffer guide assembly 130 includes guide posts 130a vertically disposed on the four corners of the top plate 120 and elastic members 130b sleeved on the guide posts 130a. The base plate 110 has guide holes on its four corners for the guide posts 130a to pass through. The base plate 110 has straps 110b at its four corners, and the straps 110b are used with Velcro to fix the base plate 110 to the seat armrest.

[0027] The pulley winch mechanism 200 is arranged on the bottom plate 110 and the top plate 120 respectively. In this embodiment, the pulley winch mechanism 200 includes a first pulley 210 and a second pulley 220 fixed on the top plate 120 and a limiting winch 230 set on the bottom plate 110. The front end of the limiting winch 230 has an iron hoist structure.

[0028] The head end of the rope 300 is wound around the limiting winch 230 and passes through the first pulley 210 and the second pulley 220 in sequence before the tail end is fixed to the base plate 110.

[0029] One end of the rope 300 is wound around the pulley winch mechanism 200, and the other end is fixed to the base plate 110. Specifically, the head end of the rope 300 is wound around the limiting winch 230 and passes through the first pulley 210 and the second pulley 220 in sequence, and the tail end is fixed to the base plate 110.

[0030] The base plate 110 is provided with a connecting ring 110a. The tail end of the rope 300 is wound and fixed on the connecting ring 110a. When the pulley winch mechanism 200 is rotated in the forward direction, the rope 300 pulls the top plate 120 to move closer to the base plate 110 and simultaneously compresses the buffer guide assembly 130. When the pulley winch mechanism 200 is rotated in the reverse direction, the buffer guide assembly 130 is simultaneously compressed and lifted upwards against the top plate 120.

[0031] Combination Figure 1 The seat armrest raising device of this embodiment is used as follows: Place the base plate 110 on the armrest and fix the base plate 110 to the seat armrest with the strap 110b and Velcro. Then turn the handle 120c-1 forward to tighten the rope 300, so that the rope 300 pulls the top plate 120 down. During this process, the guide column 130a descends and the elastic component 130b is compressed. After reaching the specified height, the ratchet of the hoist fixes it. When rising, turn the handle 230a in the opposite direction, the elastic component 130b rebounds, and drives the top plate 120 up.

[0032] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A seat armrest heightening device, characterized in that, include: The guide lifting mechanism (100) includes a base plate (110) stably connected to the seat armrest, a liftable top plate (120), and a buffer guide assembly (130) disposed between the base plate (110) and the top plate (120). A pulley winch mechanism (200) is correspondingly arranged on the base plate (110) and the top plate (120); The rope (300) has one end wound around the pulley winch mechanism (200) and the other end fixed to the base plate (110). When the pulley winch mechanism (200) is rotated in the forward direction, the rope (300) pulls the top plate (120) to move closer to the bottom plate (110) and simultaneously compresses the buffer guide assembly (130). When the pulley winch mechanism (200) is rotated in the reverse direction, the buffer guide assembly (130) is simultaneously compressed and lifts the top plate (120) upward.

2. The seat armrest heightening device according to claim 1, characterized in that, The buffer guide assembly (130) includes guide posts (130a) vertically arranged on the four corners of the top plate (120) and elastic components (130b) sleeved on the guide posts (130a). The base plate (110) has guide holes at its four corners for the guide post (130a) to pass through.

3. The seat armrest heightening device according to claim 1, characterized in that, The pulley winch mechanism (200) includes a first pulley (210) and a second pulley (220) fixed on the top plate (120) and a limiting winch (230) provided on the bottom plate (110). The front end of the limiting winch (230) has an iron hoist structure. The head end of the rope (300) is wound around the limiting winch (230) and passes through the first pulley (210) and the second pulley (220) in sequence, and the tail end is fixed to the base plate (110).

4. A seat armrest heightening device according to claim 1 or 3, characterized in that, The base plate (110) is provided with a connecting ring (110a), and the tail end of the rope (300) is wrapped and fixed on the connecting ring (110a).

5. A seat armrest heightening device according to claim 1, characterized in that, The base plate (110) is provided with straps (110b) at its four corners, and the straps (110b) are used with Velcro to fix the base plate (110) to the seat armrest.

6. A seat armrest heightening device according to claim 3, characterized in that, The limiting winch (230) has a handle (230a).

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