Armrest device and seat

Abstract

To propose an armrest device and a seat that can adjust the height and tilt angle of an armrest and significantly improve the comfort and support of a user during office work. [Solution] The armrest device includes a connecting arm and a support unit, a connecting base is provided on the upper end of the connecting arm, the support unit includes an armrest base, a rotating support member, a rotating arm and a tension spring, the rotating support member is provided on the connecting base, a first rotating axis and a second rotating axis are provided on the rotating support member, the armrest base is provided with a first connecting axis and a second connecting axis, the rotating arm includes a first support arm and a second support arm, both ends of the first support arm are connected to the first rotating axis and the second connecting axis respectively, both ends of the second support arm are connected to the second rotating axis and the second connecting axis respectively, and both ends of the tension spring are connected to the first support arm and the second support arm respectively.

Description

[Technical Field]

[0001] The present invention relates to the technical field of seating, and in particular to armrest devices and seats. [Background technology]

[0002] In related technology, seats have armrests, but when each user works while sitting in the seat, there is a certain height difference between the elbow and the table surface, and conventional armrests can only be adjusted in height to fit. However, due to differences in office work habits among people, some users are accustomed to working with their elbows slightly tilted, and in this case, conventional armrest types cannot effectively support the user's elbows. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art, and therefore, according to a first aspect of the present invention, an armrest device is proposed that allows adjustment of the armrest height and tilt angle, thereby significantly improving the user's comfort and support during office work.

[0004] According to a second aspect of the present invention, there is further proposed a seat using the armrest device. [Means for solving the problem]

[0005] An armrest device according to an embodiment of the first aspect of the present invention comprises: a connecting arm having a connecting base at its upper end; a support unit including an armrest base, a rotating support member, a rotating arm, and a tension spring, wherein the rotating support member is provided on an upper side of the connection base, the rotating support member is provided with a first rotating shaft and a second rotating shaft, the second rotating shaft is located above and rearward of the first rotating shaft, the armrest base is provided with a first connecting shaft and a second connecting shaft, the second connecting shaft is located above the first connecting shaft, the rotating arm includes a first support arm and a second support arm, both ends of the first support arm are connected to the first rotating shaft and the second connecting shaft, respectively, both ends of the second support arm are connected to the second rotating shaft and the second connecting shaft, respectively, one end of the tension spring is connected to the first support arm, and the other end is connected to the second support arm; Here, when the rotating arm rotates upward, the first support arm and the second support arm can cooperate to rotate and pull the armrest base, thereby tilting the armrest base.

[0006] The armrest device according to the first embodiment of the present invention has at least the following beneficial effects: the first and second rotation axes of the rotating support member and the first and second connection axes of the armrest base are aligned with the differential rotation trajectories of the first and second support arms, allowing the armrest base to follow the rotational inclination of the rotating arms, thereby providing a better fit and more comfortable support for the user, thereby improving the user's comfort when using the seat.

[0007] According to an embodiment of the first aspect of the present invention, the armrest device further includes a step-adjusting unit, the step-adjusting unit including a ratchet, a locking member, an elastic member, and a separating member, the ratchet is provided on the front side of the rotating support member and has a plurality of ratchet grooves, the locking member is rotatably connected to the end of the connecting arm close to the rotating support member, the end of the locking member close to the ratchet is provided with ratchet teeth, and the end remote from the ratchet is provided with an abutment plate, one end of the elastic member is connected to the rotating arm and the other end abuts against the abutment plate, thereby engaging the ratchet teeth with the ratchet, the separating member is rotatably connected to the rotating support member and located on one side of the ratchet, one side of the rotating support member is provided with a regulating post, and the separating member is provided with a regulating groove. The regulating post is drilled into the regulating groove, and a separation guide bar and a separation groove are provided on the side of the separating member facing the ratchet teeth. When the rotating arm rotates upward, the locking member and the separating member are rotatably driven upward, whereby the ratchet teeth pass through the multiple ratchet grooves in sequence and move the regulating groove relative to the regulating post. When the regulating post abuts against the lower end of the regulating groove, the ratchet teeth separate from the ratchet groove and engage with the separation groove. When the rotating arm rotates downward, the locking member and the separating member are rotatably driven downward. When the regulating post abuts against the upper end of the regulating groove, the separation guide bar abuts against the locking member to guide the rotation of the locking member, and the ratchet teeth separate from the separation groove and engage with the ratchet groove.

[0008] In the armrest device according to the first embodiment of the present invention, a first guide slope is provided on the side of the ratchet tooth facing the separating member, and a second guide slope is provided on the side of the separating member facing the ratchet tooth, extending to the separating groove. When the first guide slope abuts against the second guide slope, the ratchet tooth can engage with the separating groove along the second guide slope.

[0009] In the armrest device according to the first embodiment of the present invention, an upper hook extending downward and forward is provided on the underside of the second support arm, and a lower hook extending upward and rearward is provided on the upper side of the first support arm, and both ends of the tension spring are connected to the upper hook and the lower hook, respectively.

[0010] According to the armrest device of the first embodiment of the present invention, an insertion block is provided at the lower end of the rotating support member, an insertion groove is provided at the upper end of the connection base, and the insertion block is inserted into the insertion groove.

[0011] According to the armrest device according to the embodiment of the first aspect of the present invention, the connection base is rotatably connected to the connection arm.

[0012] According to the armrest device of the first embodiment of the present invention, the lower end surface of the connection base is provided with a plurality of gear grooves that open downward and are arc-shaped, and the upper end of the connection arm is provided with an extendable gear post, the upper end of which is hemispherical and engages with the gear grooves.

[0013] According to the armrest device according to the first aspect of the present invention, the support unit further includes an armrest pad configured to be slidable relative to the armrest base.

[0014] According to the armrest device according to the first embodiment of the present invention, the armrest pad is configured to be rotatable relative to the armrest base.

[0015] The seat according to the embodiment of the second aspect of the invention has all the beneficial effects of the embodiment of the first aspect of the invention.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic view of an armrest device according to an embodiment of the present invention; [Figure 2] 1 is a cross-sectional view of an armrest device according to an embodiment of the present invention; [Figure 3] FIG. 3 is an enlarged schematic view of part A in FIG. 2. [Figure 4] 4 is a cross-sectional view of another view of the armrest device according to the embodiment of the present invention; FIG. [Figure 5] 1 is an exploded view of an armrest device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the embodiments of the present invention will be described in detail, examples of which are illustrated in the accompanying drawings, in which the same or similar reference numerals throughout refer to the same or similar elements, or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and are used to interpret the present invention, but should not be understood as limitations on the present invention.

[0020] In describing the present invention, the orientations or positional relationships indicated by, for example, "up," "down," "left," and "right" with respect to orientation descriptions are those shown in the accompanying drawings, and are intended to facilitate and simplify the description of the present invention. They do not indicate or suggest that the indicated devices or elements must have a specific orientation or be configured and operated in a specific orientation, and therefore should not be understood as limitations on the present invention.

[0021] In the description of the present invention, when "first" or "second" is used, it is intended to distinguish technical features, but it should not be understood as indicating or suggesting relative importance, implicitly indicating the number of the designated technical features, or implicitly indicating the priority relationship of the designated technical features.

[0022] In the description of the present invention, unless otherwise expressly limited, the terms "installation," "mounting," "connection," etc. should be understood in a broad sense, and those skilled in the art can understand the specific meaning of the above terms in the present invention in conjunction with the specific content of the technical solution.

[0023] The present invention provides an armrest device for a seat, and the specific structure and function of the armrest device according to the present invention will be described below in conjunction with the accompanying drawings.

[0024] 1 to 4, an armrest device according to an embodiment of the first aspect of the present invention includes a connection arm 100 and a support unit 200. A connection base 110 is provided at the upper end of the connection arm 100 for connection to the chassis or frame of a seat. The support unit 200 includes an armrest base 210, a rotating support member 220, a rotating arm 230, and a tension spring 240. The rotating support member 220 is fixed to the upper side of the connection base 110 and is provided with a first rotating shaft 221 and a second rotating shaft 222, where the second rotating shaft 222 is located above and rearward of the first rotating shaft 221. This layout provides structural support for subsequent tilt adjustment. The armrest base 210 is provided with a first connecting shaft 211 and a second connecting shaft 212, which correspond to the first rotating shaft 221 and the second rotating shaft 222 of the rotating support member 220. The rotating arm 230 is composed of a first support arm 231 and a second support arm 232. Both ends of the first support arm 231 are connected to the first rotating shaft 221 and the second connecting shaft 212, respectively, while both ends of the second support arm 232 are connected to the second rotating shaft 222 and the second connecting shaft 212, respectively. This connection method allows the rotating arm 230 to rotate around the rotation shaft, thereby adjusting the tilt of the armrest base 210. One end of a tension spring 240 is connected to the first support arm 231, and the other end is connected to the second support arm 232. The tension spring 240 applies a constant tension to the rotating arm 230, so that the armrest base 210 can be stabilized after the tilt angle is adjusted so that its position is not easily changed by external forces.

[0025] When using this armrest device, a user can adjust the height and tilt angle of the armrest base 210 by rotating the rotating arm 230 upward. Specifically, during the rotation process, the first rotation axis 221 is positioned differently from the second rotation axis 222, resulting in different rotation trajectories for the first support arm 231 and the second support arm 232. Due to these differential rotation trajectories, the first support arm 231 and the second support arm 232 cooperate during rotation, pulling and adjusting the tilt of the armrest base 210. Users can easily adjust the tilt angle of the armrest base 210 to achieve optimal support according to their office work habits and comfort needs.

[0026] According to the armrest device of the first embodiment of the present invention, the first rotation axis 221 and the second rotation axis 222 of the rotating support member 220 and the first connecting axis 211 and the second connecting axis 212 of the armrest base 210 are aligned with the differential rotation trajectories of the first support arm 231 and the second support arm 232, so that the armrest base 210 follows the rotational inclination of the rotating arm 230, thereby providing a more fitted and comfortable support for the user and improving the user's comfort when using the seat.

[0027] 2 to 4, an armrest device according to an embodiment of the first aspect of the present invention further includes a step-adjusting unit 300, which includes a ratchet 310, a locking member 320, an elastic member 330, and a separating member 340. The ratchet 310 is provided on the front side of the rotating support member 220 and has a number of ratchet grooves that fit with ratchet teeth 321 on the locking member 320 to lock the tilt angle of the armrest device. The locking member 320 is rotatably connected to the end of the connecting arm 100 close to the rotating support member 220, with one end provided with ratchet teeth 321 for engaging with the ratchet grooves of the ratchet 310 and the other end provided with an abutment plate 322. One end of the elastic member 330 is connected to the rotating arm 230, and the other end abuts against the abutment plate 322 of the locking member 320. When the rotating arm 230 rotates, the elastic member 330 applies force to the locking member 320 via the abutment plate 322, causing the ratchet teeth 321 to tightly engage with the ratchet groove, thereby stabilizing the tilt angle of the armrest device. The separating member 340 is rotatably connected to the rotating support member 220 and is located on one side of the ratchet 310. A restricting post 223 is provided on one side of the rotating support member 220. The separating member 340 is provided with a restricting groove 341, and the restricting post 223 is drilled into this restricting groove 341. In addition, a separating guide bar 342 and a separating groove 343 are further provided on the side of the separating member 340 facing the ratchet teeth 321. The design of the separating guide bar 342 and the separating groove 343 ensures accurate engagement and separation between the ratchet teeth 321 and the ratchet groove and the separating groove 343 when the rotating arm 230 rotates upward or downward.

[0028] During use, when a user rotates the rotating arm 230 upward to adjust the tilt angle of the armrest device, the rotating arm 230 rotates the locking member 320 and the separating member 340 upward together. During this process, the ratchet teeth 321 pass through the ratchet grooves of the ratchet 310 in sequence, adjusting the tilt angle. At the same time, the restricting groove 341 moves relative to the restricting post 223. When the restricting post 223 abuts against the lower end of the restricting groove 341, if the user continues to rotate the rotating arm 230 upward, the ratchet teeth 321 disengages from the ratchet groove located at the top end of the ratchet 310 and engages with the separating groove 343. At this time, the locking member 320 remains separated from the ratchet 310, the tilt angle of the armrest device is temporarily unlocked, and the rotating arm 230 can freely rotate downward.

[0029] Conversely, when the user rotates the rotating arm 230 downward, the rotating arm 230 rotates the locking member 320 and the separating member 340 downward together. When the restricting post 223 abuts against the upper end of the restricting groove 341, the separating member 340 is fixed. As the user continues to rotate the rotating arm 230 downward, the locking member 320 rotates downward relative to the separating member 340, and the separating guide bar 342 abuts against the locking member 320, guiding its rotation. In this way, the ratchet teeth 321 disengage from the separating groove 343 and re-engage with the ratchet groove. At this time, the height of the rotating arm 230 can be adjusted by rotating it upward again, thereby adjusting the height and inclination of the armrest base 210.

[0030] The design of the step adjustment unit 300 allows users to more easily adjust and lock the tilt angle of the armrest device to meet the needs of different office work scenarios, while also improving the stability and durability of the armrest device.

[0031] 3 and 4, an armrest device according to an embodiment of the first aspect of the present invention has a first guide slope on the side of ratchet tooth 321 facing separating member 340. By providing the first guide slope, a gradually increasing contact force is generated when ratchet tooth 321 contacts separating member 340, thereby guiding ratchet tooth 321 to move in a specific direction. In addition, a second guide slope is provided on the side of separating member 340 facing ratchet tooth 321, extending to separating groove 343. The second guide slope coincides with the first guide slope to form a guide passage, making it easier for ratchet tooth 321 to engage with separating groove 343 during rotation.

[0032] When the user adjusts the tilt angle of the armrest device, the ratchet tooth 321 needs to be separated from the ratchet 310 and engaged with the separation groove 343, and the combination of the first guide slope and the second guide slope serves as a guide. As the rotating arm 230 continues to rotate, the first guide slope of the ratchet tooth 321 contacts the second guide slope of the separation member 340, and the ratchet tooth 321 receives a force along the direction of the second guide slope, thereby being guided to engage with the separation groove 343 along the second guide slope.

[0033] 2 and 4, in the armrest device according to the first embodiment of the present invention, an upper hook 233 extending downward and forward is provided on the underside of the second support arm 232. The shape and position of the upper hook 233 can be set according to actual needs so as to be firmly connected to one end of the tension spring 240 and maintain a stable connection during adjustment of the armrest device.

[0034] Therefore, a lower hook 234 extending upward and rearward is provided on the upper side of the first support arm 231. The lower hook 234 cooperates with the upper hook 233, and the other end of the tension spring 240 is connected to the lower hook 234. This not only allows the tension spring 240 to be more evenly distributed along the rotating arm 230, but also improves the structural strength of the entire armrest device.

[0035] When the armrest device needs to adjust the height and tilt angle of the armrest base 210, the user operates the rotating arm 230 to rotate it upward or downward. During this process, the tension spring 240 constantly maintains an appropriate tension on the rotating arm 230 through the connection between the upper hook 233 and the lower hook 234. This tension not only helps the rotating arm 230 to move smoothly during adjustment, but also ensures that the armrest base 210 is stably held in the required position after being adjusted to a predetermined position.

[0036] 4 and 5, in an armrest device according to the first embodiment of the present invention, a rectangular insertion block 224 is provided at the lower end of the swivel support member 220, and an insertion groove 111 matching the shape of the insertion block 224 is provided at the upper end of the connection base 110. The insertion block 224 is inserted into the insertion groove 111. To install the armrest, the user simply aligns the insertion block 224 at the lower end of the swivel support member 220 with the insertion groove 111 at the upper end of the connection base 110 and then fastens them with a fastener. The high degree of alignment between the insertion block 224 and the insertion groove 111 makes the installation process very convenient, eliminating the need for additional tools or complex operations. Furthermore, this insertion-type connection method ensures a stronger connection between the swivel support member 220 and the connection base 110, making it less likely to loosen or come off even after prolonged use.

[0037] Referring to FIG. 5 , in an armrest device according to the first embodiment of the present invention, the connection base 110 is rotatably connected to the connection arm 100, and the rotating arm 230 rotates the connection base 110, thereby enabling the armrest base 210 to be horizontally positioned. When a user wants to adjust the angle or position of the armrest device, they can achieve full rotation of the armrest base 210 simply by gently rotating the connection base 110. This rotation is smooth and continuous, and does not affect the user's experience due to jamming or resistance during rotation. Furthermore, because the rotational connection between the connection base 110 and the connection arm 100 is strong, the armrest device maintains stable performance even during prolonged use, without rattle or wobble.

[0038] 4 and 5, in the armrest device according to the first embodiment of the present invention, the lower end surface of the connection base 110 is provided with a plurality of gear grooves (not shown) that open downward and are arc-shaped, and the plurality of gear grooves are spaced apart along the circumferential direction of the connection base 110. The upper end of the connection arm 100 is provided with an extendable gear post 101, the extension function of which is realized by an internal spring mechanism, and the upper end of the gear post 101 is hemispherical and engages with the gear groove.

[0039] When the user wants to adjust the armrest device to a specific position, the user can rotate the rotating support base and the rotating base by the rotating arm 230, and align and engage the hemispherical upper end of the gear post 101 with different gear grooves, thereby achieving horizontal rotational adjustment of the armrest base 210.

[0040] 1 and 2, in the armrest device according to the first embodiment of the present invention, the support unit 200 further includes an armrest pad 250, which is slidable relative to the armrest base 210. The slidable armrest pad 250 allows the user to easily adjust the position of the armrest pad 250 according to their own usage habits and needs. Whether typing, writing, or taking a break, the user can easily slide the armrest pad 250 to find the optimal hand support position, thereby effectively relieving pressure on the wrists and arms and improving comfort.

[0041] The ability of the armrest pad 250 to slide relative to the armrest base 210 is a common technical means available to those skilled in the art, and a description thereof will be omitted here.

[0042] 1 and 2, in the armrest device according to the first embodiment of the present invention, the armrest pad 250 is configured to be rotatable relative to the armrest base 210. The rotatable armrest pad 250 allows the user to easily adjust the angle of the armrest pad 250 according to their own usage habits and needs, so that the armrest pad 250 can better support the user's hands.

[0043] The fact that the armrest pad 250 can rotate relative to the armrest base 210 is a common technical means that can be used by those skilled in the art, and therefore a detailed description thereof will be omitted here.

[0044] The seat according to the embodiment of the second aspect of the invention has all the beneficial effects of the embodiment of the first aspect of the invention.

[0045] The present invention is not limited to the above-described embodiments, and equivalent modifications and substitutions may be made by those skilled in the art without departing from the spirit of the present invention. These equivalent modifications and substitutions are included in the scope of the utility model registration claims of this application. [Explanation of symbols]

[0046] 100 connection arm, 101 gear post, 110 connection base, 111 insertion groove, 200 Support unit, 210 Armrest base, 211 First connecting shaft, 212 Second connecting shaft, 220 Rotation support member, 221 First rotating shaft, 222 Second rotating shaft, 223 Regulating column, 224 Insertion block, 230 Rotation arm, 231 First support arm, 232 Second support arm, 233 Upper hook, 234 Lower hook, 240 Tension spring, 250 Armrest pad, 300 step adjustment unit, 310 ratchet, 320 locking member, 321 ratchet teeth, 322 abutment plate, 330 elastic member, 340 separation member, 341 regulating groove, 342 separation guide bar, 343 separation groove

Claims

1. An armrest device, comprising: a connecting arm having a connecting base at its upper end; a support unit including an armrest base, a rotating support member, a rotating arm, and a tension spring, wherein the rotating support member is provided on an upper side of the connection base, the rotating support member is provided with a first rotating shaft and a second rotating shaft, the second rotating shaft is located above and rearward of the first rotating shaft, the armrest base is provided with a first connecting shaft and a second connecting shaft, the second connecting shaft is located above the first connecting shaft, the rotating arm includes a first support arm and a second support arm, both ends of the first support arm are connected to the first rotating shaft and the second connecting shaft, respectively, both ends of the second support arm are connected to the second rotating shaft and the second connecting shaft, respectively, and one end of the tension spring is connected to the first support arm and the other end is connected to the second support arm; Here, when the rotating arm rotates upward, the first support arm and the second support arm cooperate to rotate and pull the armrest base, thereby tilting the armrest base.

2. The step adjusting unit further includes a ratchet, a locking member, an elastic member, and a separating member. The ratchet is provided on a front side of the rotary support member and has a plurality of ratchet grooves. The locking member is rotatably connected to an end of the connecting arm close to the rotary support member. The end of the locking member close to the ratchet is provided with ratchet teeth and an abutment plate is provided on an end remote from the ratchet. One end of the elastic member is connected to the rotary arm and the other end abuts against the abutment plate, thereby engaging the ratchet teeth with the ratchet. The separating member is rotatably connected to the rotary support member and is located on one side of the ratchet. A regulating post is provided on one side of the rotary support member. The separating member is provided with a regulating groove. The regulating post is drilled into the regulating groove. The separating member a separation guide bar and a separation groove are provided on the side facing the ratchet teeth of the rotating arm, and the rotating arm rotates upward to rotatably drive the locking member and the separating member upward, whereby the ratchet teeth pass through the plurality of ratchet grooves in sequence and move the regulating groove relative to the regulating post, and when the regulating post abuts against the lower end of the regulating groove, the ratchet teeth separate from the ratchet groove and engage with the separating groove, and the rotating arm rotates downward to rotatably drive the locking member and the separating member downward, and when the regulating post abuts against the upper end of the regulating groove, the separation guide bar abuts against the locking member to guide the rotation of the locking member, and the ratchet teeth separate from the separating groove and engage with the ratchet groove.

3. 3. The armrest device according to claim 2, wherein a first guide slope is provided on the side of the ratchet tooth facing the separating member, and a second guide slope is provided on the side of the separating member facing the ratchet tooth, extending to the separating groove, and when the first guide slope abuts against the second guide slope, the ratchet tooth can engage into the separating groove along the second guide slope.

4. The armrest device of claim 1, wherein an upper hook extending downward and forward is provided on the underside of the second support arm, and a lower hook extending upward and rearward is provided on the upper side of the first support arm, and both ends of the tension spring are connected to the upper hook and the lower hook, respectively.

5. The armrest device according to claim 1, wherein an insertion block is provided at the lower end of the rotation support member, an insertion groove is provided at the upper end of the connection base, and the insertion block is inserted into the insertion groove.

6. 2. The armrest device of claim 1, wherein the connection base is rotatably connected to the connection arm.

7. The armrest device according to claim 6, characterized in that the lower end surface of the connection base is provided with a plurality of gear grooves that open downward and are arc-shaped, and the upper end of the connection arm is provided with an extendable gear post, the upper end of the gear post being hemispherical and engaged with the gear grooves.

8. The armrest device according to claim 1 , wherein the support unit further includes an armrest pad configured to be slidable relative to the armrest base.

9. The armrest device of claim 8, wherein the armrest pad is configured to be rotatable relative to the armrest base.

10. A seat comprising an armrest device according to any one of claims 1 to 9.

Images