Quick-release structure for chair armrest

Abstract

The present invention relates to a quick-release structure for a chair armrest. Specifically, a fixed base is securely provided at an upper end of an armrest support bracket, and an armrest assembly is installed on the fixed base. The armrest assembly includes a first quick-release component, while the fixed base is equipped with a second quick-release component. When the armrest assembly is damaged, the first quick-release component of the armrest assembly and the second quick-release component of the fixed base can be disengaged, allowing the damaged armrest assembly to be removed. A new, undamaged armrest assembly can then be installed onto the fixed base of the armrest support bracket. Subsequently, the first quick-release component of the new armrest assembly and the second quick-release component of the fixed base are securely engaged with each other. This design provides convenience and effectively reduces armrest maintenance costs.

Description

Technical Field

[0001] This invention relates to the technical field of chair armrests, and more particularly to a quick-release structure for chair armrests. Prior Technology

[0002] Note that most existing chairs can be adjusted for backrest tilt and seat height. In order to provide support for the user's arms and reduce the burden on the neck and shoulders, the armrests of existing chairs can also be adjusted for height, forward and backward movement, and left and right rotation.

[0003] Please refer to the "Adjustable Seat Armrest Structure" in Taiwan Publication No. I717293, which is a prior patent application developed by the inventor of this case. It mainly includes an armrest bracket, a sliding seat, a rotating seat, a fixing member, a cover, and an armrest cover. The sliding seat and the rotating seat are sequentially arranged on the armrest bracket, and the sliding seat and the rotating seat are connected to the armrest bracket by the fixing member. Then the cover and the armrest cover are covered. In this way, by using the setting of the sliding seat and the rotating seat, the armrest can be adjusted to rotate and move forward and backward according to the user's arm posture.

[0004] While the "adjustable armrest structure" in Announcement No. I717293 can adjust the fore-and-aft position and left-and-right swing angle to accommodate different arm postures of users and provide comfortable support for their arms, its structural design for adjusting the fore-and-aft position and left-and-right angle is relatively complex, making maintenance relatively difficult and time-consuming. Therefore, when the armrest is damaged, the current practice is to completely remove and replace the entire armrest, which consists of the armrest bracket, sliding seat, rotating seat, fixing parts, cover, and armrest cover. This results in the high maintenance costs of the existing adjustable armrest.

[0005] The reason is that, in view of the aforementioned shortcomings in the use and maintenance of seat armrests that can be adjusted in front and behind and left and right angles, such as the "seat armrest adjustment structure" in announcement No. I717293, the inventor, with the assistance of many years of manufacturing and design experience and knowledge in related fields, and through various ingenious ideas, has created this invention. Summary of the Invention

[0006] This invention relates to a quick-release structure for chair armrests, the main purpose of which is to provide a quick-release structure for chair armrests that can be easily assembled and disassembled, thereby effectively saving on armrest maintenance costs.

[0007] To achieve the aforementioned objectives, the inventor has devised the following quick-release structure for a chair armrest, comprising an armrest support, a fixed base fixedly disposed at the upper end of the armrest support, an armrest assembly disposed on the fixed base, and at least one displacement module disposed within the armrest assembly; characterized in that: a quick-release module is disposed between the fixed base and the armrest assembly, the quick-release module comprising a first quick-release component and a second quick-release component, the first quick-release component and the second quick-release component being respectively disposed on the armrest assembly and the fixed base; The armrest assembly and the fixed base are movably connected or separated by the first quick-release component and the second quick-release component. The first quick-release component of the quick-release module is a set of knobs located on the bottom surface of the armrest assembly. The second quick-release component is an assembly hole located on the fixed base, with a notch formed on each of the two opposite sides of the assembly hole. The assembly hole has two grooves formed on opposite sides of its bottom edge wall. These two grooves are offset from the two notches. One side of the groove is connected to one side of each of the two notches. A protrusion is formed on each of the two opposite sides of the knob. The knob and its two protrusions correspond to the shape of the assembly hole and its two notches of the fixing base, and are correspondingly positioned in the assembly hole and its two notches. Furthermore, the two protrusions of the knob are movably engaged with or separated from the two grooves of the assembly hole. The second quick-release assembly also includes a receiving groove on the fixing base, and a latch and an elastic element disposed within the receiving groove. The two ends of the elastic element are... The tenon and the groove wall of the receiving groove are respectively in contact with the locking tenon and the groove wall. A through hole is provided at one end of the receiving groove to communicate with one of the grooves. The tenon of the locking tenon protrudes into the groove through the through hole of the receiving groove to be moved and locked or separated from one of the protrusions of the knob. A channel is provided on one side of the fixing base to communicate with the receiving groove. A slope is provided on one side of the locking tenon, which corresponds to the position of the channel. An insertion hole is provided on one side of the armrest bracket to correspond to the position of the channel on the side of the fixing base.

[0008] As described above, in the quick-release structure of the chair armrest, the tenon is fitted with a guide portion at the end of its tenon.

[0009] As described above, the quick-release structure for the armrest of the chair further includes a pin that extends from a hole on one side of the armrest bracket into the channel of the fixed seat and abuts against the inclined surface on one side of the latch.

[0010] As described above, the quick-release armrest structure of the chair includes a swing module inside the armrest assembly, and at least one displacement module is a longitudinal displacement module.

[0011] As described above, the quick-release armrest structure of the chair includes a swing module inside the armrest assembly, and the at least one displacement module includes a longitudinal displacement module and a lateral displacement module.

[0012] As described above, the quick-release armrest structure of the chair includes a swing module inside the armrest assembly.

[0013] As described above, in the quick-release armrest structure of the chair, at least one displacement module within the armrest assembly includes at least one of a longitudinal displacement module and a lateral displacement module.

[0014] Therefore, when the handrail assembly that allows for adjustment of its forward and backward position and left and right swing angle is damaged, the engagement of the first quick-release component of the handrail assembly and the second quick-release component of the fixing base can be released to remove the damaged handrail assembly. Then, an undamaged handrail assembly can be placed on the fixing base of the handrail bracket, and the first quick-release component of the handrail assembly and the second quick-release component of the fixing base can be engaged together. This achieves the benefits of convenient maintenance and effective savings in handrail maintenance costs. Simple Explanation of the Diagram

[0015] Figure 1: Exploded perspective view of the present invention

[0016] Figure 2: Partial magnified three-dimensional exploded view of the present invention

[0017] Figure 3: Another exploded perspective view of the present invention

[0018] Figure 4: Assembly Implementation Diagram of the Invention (I)

[0019] Figure 5: Assembly Implementation Diagram of the Invention (II)

[0020] Figure 6: Assembly Implementation Diagram of the Invention (Part 3)

[0021] Figure 7: Disassembly Implementation Diagram of the Invention (I)

[0022] Figure 8: Disassembly Implementation Diagram of the Invention (II)

[0023] Figure 9: Disassembly Implementation Diagram of the Invention (Part Three)

[0024] Figure 10: Exploded perspective view of another embodiment of the present invention Implementation

[0025] To more fully and clearly disclose the technical means and effects of the present invention, the following detailed description is provided, along with the disclosed drawings and figures: First, please refer to Figures 1 to 3, which show the quick-release armrest structure of the chair of the present invention. It mainly includes an armrest support (1), and a fixing seat (2) is provided at the upper end of the armrest support (1). The fixing seat (2) is fixed to the upper end of the armrest support (1) by several screws (21). An armrest assembly (3) is provided on the fixing seat (2), and a longitudinal displacement module (31) that can move back and forth and a swing module (32) that can rotate and swing horizontally to the left and right are provided in the armrest assembly (3).The feature is that a quick-release module (4) is provided between the fixed base (2) and the handrail assembly (3). The quick-release module includes a first quick-release component and a second quick-release component. The first quick-release component and the second quick-release component are respectively provided on the handrail assembly (3) and the fixed base (2), so that the handrail assembly (3) and the fixed base (2) can be movably joined or separated by the first quick-release component and the second quick-release component. The first quick-release component of the quick-release module (4) is a knob (41) provided at the center of the bottom surface of the handrail assembly (3). The second quick-release component of the quick-release module (4) is an assembly hole (42) provided at the center of the fixed base (2). A notch (421) is formed on each of the two sides, and a groove (422) is formed on each of the two opposite sides of the hole (42) near its bottom edge. The two grooves (422) are offset from the two notches (421), and one side of each groove (422) is connected to one side of each notch (421). A protrusion (411) is formed on each of the two opposite sides of the knob (41). The knob (41) and its two protrusions (411) correspond to the shape of the hole (42) and its two notches (421) of the fixing base (2), so that the knob (41) and its two protrusions (411) are correspondingly set in the hole (42) and its two sides. The side notch (421) causes the knob (41) to rotate by an angle, so that its two protrusions (411) can be engaged or disengaged from the two grooves (422) of the set of upright holes (42). The quick-release module (4) also includes a receiving groove (43) on the fixed base (2), a tenon (44) and an elastic member (45) in the receiving groove (43). The two ends of the elastic member (45) are respectively in contact with the tenon (44) and the groove wall of the receiving groove (43). A through hole (431) is provided at one end of the receiving groove (43) to communicate with one of the grooves (422). The tenon (441) of the tenon (44) passes through the through hole of the receiving groove (43). 431) The movable protrusion extends into the groove (422) to engage or disengage with one of the protrusions (411) of the knob (41). A guide portion (442) is formed at the end of the tenon (441) of the latch (44). The guide portion (442) may be in the shape of a slope, cone, or arc. A channel (46) is provided on one side of the fixed base (2) to communicate with the receiving groove (43). A slope (443) is provided on one side of the latch (44), which corresponds to the position of the channel (46). An insertion hole (47) is provided on one side of the armrest bracket (1) to correspond to the position of the channel (46) on one side of the fixed base (2).

[0026] Accordingly, when assembling and using, please refer to Figure 4. Place the handrail assembly (3) on the fixed seat (2) at the upper end of the handrail bracket (1), and make the knob (41) and its two side protrusions (411) on the bottom surface of the handrail assembly (3) pass through the assembly hole (42) and its two side notches (421) of the fixed seat (2) to the bottom edge of the assembly hole (42). Please refer to Figure 5. Then apply force to rotate the handrail assembly (3) counterclockwise by an angle. At this time, one of the protrusions (411) of the knob (41) of the handrail assembly (3) is guided along the inclined surface of the guide part (442) of the tenon (441) of the latch (44), and pushes the latch (44) towards the elastic element (45) in the groove (43) to compress the elastic element. (45) and make the tenon (441) of the latch (44) exit the groove (422), so that the two protrusions (411) of the knob (41) can rotate and move from the two side notches (421) of the assembly hole (42) to the two grooves (422) of the assembly hole (42) respectively, so as to abut against the two grooves (422) for positioning. Please refer to Figure 6. At this time, the tenon (441) of the latch (44) also loses the abutment of the protrusion (411) of the knob (41) against it. The reason is that the elastic element (45) of the latch (44) pushed towards the groove (43) in a compressed state can return to its original state, so as to push the tenon (441) of the latch (44) back into the groove (422), and lock and position itself against one side of the protrusion (411) of the knob (41). Thus, the armrest assembly (3) and the fixed seat (2) are assembled in a simple way. When the user sits on the chair, he can rest his arm on the armrest assembly (3). By using the longitudinal displacement module (31) and the swing module (32) in the armrest assembly (3), the armrest assembly (3) can be adjusted to match the position and angle of the user's arm, so that the armrest assembly (3) can be moved forward and backward and swung left and right to provide the user with a comfortable arm position.

[0027] Furthermore, when the armrest assembly (3) of the chair armrest of the present invention is damaged after a period of use, please refer to Figure 7. The user can take a pin (48) and insert the pin (48) into the channel (46) of the fixed seat (2) through the insertion hole (47) on one side of the armrest bracket (1), and it will come into contact with the inclined surface (443) of the latch (44). The pushing force of the pin (48) being inserted will be guided along the inclined surface (443) of the latch (44), and the latch (44) will be pushed towards the elastic element (45) in the groove (43) to compress the elastic element (45) and make the tenon (441) of the latch (44) disengage from the latching and positioning state of the protrusion (411) of the knob (41). Please refer to Figure 8. Then, the user applies force to rotate the handrail assembly (3) clockwise by an angle so that the two protrusions (411) of the knob (41) on the bottom surface of the handrail assembly (3) are rotated and moved from the two grooves (422) of the assembly hole (42) of the fixed base (2) to the notches (421) on both sides of the assembly hole (42) [as shown in Figure 9]. Then, the user can apply force to pull the handrail assembly (3) upward so that the knob (41) on the bottom surface of the handrail assembly (3) is disengaged from the assembly hole (42) of the fixed base (2), thus achieving the effect of easily separating the handrail assembly (3) from the fixed base (2).

[0028] Then, the user can place the knob (41) on the bottom of a brand new, undamaged handrail assembly (3) into the mounting hole (42) of the mounting base (2), and then apply force to the handrail assembly (3) to rotate the knob (41) by an angle, so that the two protrusions (411) on the two sides of the knob (41) abut against the two grooves (422) of the mounting hole (42) respectively, and make the tenon (441) of the latch (44) and the protrusion (411) on the knob (41) mutually engage and position each other, so as to easily complete the maintenance work of the handrail assembly (3).

[0029] Therefore, by means of the quick-release structure design of the chair armrest of the present invention, when the armrest assembly (3) which can be adjusted in front and back position and left and right swing angle is damaged, the damaged armrest assembly (3) can be quickly and conveniently removed from the fixing seat (2) of the armrest bracket (1), and a new armrest assembly (3) can be quickly installed on the fixing seat (2) of the armrest bracket (1) without having to remove and replace the armrest bracket (1) at the same time. In this way, the maintenance cost of the chair armrest can be effectively saved.

[0030] The foregoing embodiments or diagrams are not intended to limit the implementation of the present invention. Please also refer to Figure 10, which shows another embodiment of the handrail assembly (5). In addition to a longitudinal displacement module (51) that can move forward and backward and a swivel module (52) that can rotate and sway horizontally, the handrail assembly (5) may also be provided with a lateral displacement module (53) that can move left and right. Alternatively, the handrail assemblies (3) and (5) of the present invention may omit the swivel modules (32) and (52) and only provide one of the longitudinal displacement modules (31) and (51) or the lateral displacement module (53). Therefore, any handrail assembly (3) or (5) that has at least one displacement module shall be considered to be within the scope of the patent of the present invention.

[0031] As can be seen from the above structure and implementation methods, the present invention has the following advantages:

[0032] 1. The quick-release structure for chair armrests of the present invention consists of an armrest assembly mounted on a fixed base of an armrest bracket, and a quick-release module between the fixed base and the armrest assembly. In this way, when the armrest assembly, which can be adjusted to move forward and backward and rotate left and right, is damaged, the quick-release module can be quickly released from the connection between the armrest assembly and the fixed base, and the damaged armrest assembly can be removed and replaced, thereby improving the convenience of chair armrest maintenance.

[0033] 2. The quick-release structure for chair armrests of the present invention consists of an armrest assembly mounted on a fixed base of an armrest bracket, and a quick-release module between the fixed base and the armrest assembly. Thus, when the armrest assembly is damaged, it is only necessary to disconnect the armrest assembly from the fixed base to remove and replace the damaged armrest, without having to replace the armrest bracket as well. This effectively saves on the maintenance costs of chair armrests.

[0034] In conclusion, the embodiments of the present invention can indeed achieve the expected effects, and the specific structure disclosed therein has not only never been seen in similar products, but has also never been disclosed before the application. It fully complies with the provisions and requirements of the Patent Law. Therefore, we hereby file an application for an invention patent in accordance with the law, and respectfully request your review and grant of a patent, which would be of great benefit.

[0035] 1: Handrail support

[0036] 2: Fixed base

[0037] 21: Screws

[0038] 3: Armrest Set

[0039] 31: Longitudinal displacement module

[0040] 32: Swing Module

[0041] 4: Quick-release module

[0042] 41: Knob

[0043] 411: Bump

[0044] 42: Assembly hole

[0045] 421: Gap

[0046] 422: Groove

[0047] 43: Container

[0048] 431: Perforation

[0049] 44: Clamp

[0050] 441: Tenon

[0051] 442: Guiding Department

[0052] 443: Incline

[0053] 45: Elastic component

[0054] 46: Channel

[0055] 47: Socket

[0056] 48: Cuttings

[0057] 5: Armrest Set

[0058] 51: Longitudinal displacement module

[0059] 52: Swing Module

[0060] 53: Lateral displacement module

Claims

1. A quick-release structure for a chair armrest, comprising an armrest support, a fixed base fixedly disposed at the upper end of the armrest support, an armrest assembly disposed on the fixed base, and at least one displacement module disposed within the armrest assembly; characterized in that: a quick-release module is disposed between the fixed base and the armrest assembly, the quick-release module comprising a first quick-release component and a second quick-release component, the first quick-release component and the second quick-release component being respectively disposed on the armrest assembly and the fixed base, thereby allowing the armrest assembly and the fixed base to be movably joined or separated through the first quick-release component and the second quick-release component, wherein... The first quick-release component of the quick-release module is a set of knobs located on the bottom surface of the armrest assembly. The second quick-release component is an assembly hole located on the mounting base. A notch is formed on each of the two opposite sides of the assembly hole. A groove is formed on each of the two opposite sides of the hole wall near its bottom edge. These two grooves are offset from the two notches, and one side of each groove is connected to one side of each notch. A protrusion is formed on each of the two opposite sides of the knob. The shape of the knob and its two protrusions corresponds to the shape of the assembly hole and its two notches on the mounting base, and they are correspondingly positioned within the assembly hole and its two notches. Furthermore, the two protrusions on the knob are respectively connected to the two protrusions on the two sides of the assembly hole. The second quick-release assembly includes a groove on the fixed base, a tenon and an elastic member disposed in the groove. The two ends of the elastic member are respectively in contact with the tenon and the groove wall. A through hole is provided at one end of the groove to communicate with one of the grooves. The tenon of the tenon protrudes into the groove through the through hole to be moved and locked with one of the protrusions of the knob for positioning or separation. A channel is provided on one side of the fixed base to communicate with the groove. An inclined surface is provided on one side of the tenon, which corresponds to the position of the channel. An insertion hole is provided on one side of the armrest bracket to correspond to the position of the channel on one side of the fixed base.

2. The quick-release armrest structure of the chair as described in claim 1, wherein, The tenon is fitted with a guide section at the end of its tenon.

3. The quick-release armrest structure of the chair as described in claim 1, wherein, The quick-release module further includes a pin that extends from a hole on one side of the armrest bracket into the channel of the fixing seat and abuts against the inclined surface on one side of the latch.

4. The quick-release armrest structure of the chair as described in claim 1, wherein, The handrail assembly is further provided with a swing module, and the at least one displacement module is a longitudinal displacement module.

5. The quick-release armrest structure of the chair as described in claim 1, wherein, The handrail assembly is further provided with a swing module, and the at least one displacement module includes a longitudinal displacement module and a lateral displacement module.

6. The quick-release armrest structure of the chair as described in claim 1, wherein, The handrail assembly is further equipped with a swing module.

7. The quick-release armrest structure of the chair as described in claim 1, wherein, At least one displacement module within the handrail assembly includes at least one of a longitudinal displacement module and a lateral displacement module.

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