Chair armrest capable of being adjusted in lifting mode

Abstract

The utility model provides a chair armrest capable of being adjusted in a lifting way, which comprises an armrest seat and a supporting seat arranged on the armrest seat in a sliding way, a limiting piece is arranged on the inner side of the top of the armrest seat, and a plurality of limiting grooves are longitudinally formed in the limiting piece; an adjusting mechanism is mounted in the supporting seat, the adjusting mechanism comprises an adjusting part rotationally connected into the supporting seat, and a locking structure clamped with the limiting groove is arranged at the lower end of the adjusting part. The limiting piece provided with the limiting grooves is installed in the armrest base, the function of improving the structural strength of the armrest base is achieved, and the problem that the service life is shortened due to the fact that holes are directly formed in the armrest base is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chair armrests, in particular to a chair armrest which can be raised and lowered and adjusted. Background Art

[0002] With the advancement of science and technology and the in-depth study of ergonomics, people have begun to pay attention to the impact of factors such as the height, angle, and width of chair armrests on the user's sitting posture and comfort. In this context, liftable and adjustable chair armrests are widely used in various types of seating products such as office chairs, computer chairs, and leisure chairs, achieving multiple functions such as comfort, health, and practicality to meet user needs.

[0003] Chinese patent CN214905269U discloses a chair armrest with lifting and limiting function, including a support rod and a lifting shell sleeved outside the support rod, a limiting bushing connected to the top of the support rod, and a lifting shell sleeved outside the limiting bushing. The bottom of the lifting shell is provided with a limiting convex edge with an inner diameter smaller than the outer diameter of the limiting bushing. The utility model has a simple structure and high durability. Because the inner diameter of the limiting convex edge provided at the bottom of the lifting shell toward the inner ring is smaller than the outer diameter of the limiting bushing connected to the top of the support rod, when the lifting shell is lifted to the top of the limiting convex edge abutting the bottom of the limiting bushing, the lifting shell reaches the maximum lifting distance, avoiding being pulled out by mistake due to excessive force. At the same time, because the limiting convex edge and the limiting bushing abut with a large area, the durability is increased, avoiding the possibility that the lifting limit block of small volume in the prior art is worn after the armrest is lifted many times, and the armrest is finally pulled out by mistake due to excessive force, thereby improving the use experience.

[0004] However, this technical solution has the following problems: first, the adjustment locking hole is directly opened on the support rod to cooperate with the locking block, which affects the structural strength of the support rod and shortens its service life; second, the rising distance of the lifting shell is limited by the contact between the limiting convex edge at the bottom of the lifting shell and the bottom of the limiting bushing, and at the same time, the raised part of the limiting bushing contacts the guide rib on the inner side of the lifting shell, and the structure is too compact, which is not conducive to installation and maintenance. Utility Model Content

[0005] The purpose of the utility model is to provide a chair armrest that can be raised and lowered to address the deficiencies of the prior art. By installing a limiting member with a plurality of limiting grooves in the armrest seat, the structural strength of the armrest seat can be improved, and the problem of shortening the service life due to directly opening holes in the armrest seat can be solved.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A chair armrest that can be raised and lowered and adjusted comprises an armrest seat and a support seat slidably mounted on the armrest seat, a limiting piece is mounted on the inner side of the top of the armrest seat, and a plurality of limiting grooves are longitudinally arranged on the limiting piece; an adjusting mechanism is mounted in the support seat, and the adjusting mechanism comprises an adjusting piece rotatably connected to the support seat, and a locking structure engaged with the limiting groove is arranged at the lower end of the adjusting piece.

[0008] Preferably, the adjustment mechanism further comprises an operating member, the adjustment member is laterally provided with a control portion, the operating member is connected to an outer end of the control portion and is arranged on the outer side of the support seat.

[0009] Preferably, an armrest cover is installed on the top of the armrest seat, the armrest cover is provided with a through hole, and the through hole is provided with an opening on a side facing the control part.

[0010] As a preference, the adjusting member passes through the through hole and is arranged in the armrest seat, and a limiting structure is also arranged at the lower end of the adjusting member.

[0011] As a preference, a support cover is installed on the top of the support seat, an abutment column is arranged below the support cover, and a reset member is installed between the support cover and the control part.

[0012] Preferably, at least one isolating member is installed on the outer side of the armrest seat, and the isolating member is protrudingly provided with an isolating structure.

[0013] Preferably, a guide rib abutting against the isolation structure is provided on the inner side of the support seat.

[0014] Preferably, the upper end of the limiting member is longitudinally provided with a first snap-fitting structure, and the lower end thereof is transversely provided with an abutment structure, the upper end of the armrest seat is provided with a first snap-fitting groove cooperating with the first snap-fitting structure, and the middle part thereof is provided with a limiting step cooperating with the abutment structure.

[0015] Preferably, a second engaging structure is provided at the lower end of the armrest cover, and a second engaging groove cooperating with the second engaging structure is provided at the upper end of the armrest seat.

[0016] As a preference, a hand rest is horizontally rotatably connected to the upper end of the support seat.

[0017] The beneficial effects of the utility model are:

[0018] (1) The utility model improves the structural strength of the armrest seat and prolongs the service life of the armrest by installing a limit piece on the armrest seat to cooperate with the adjustment mechanism instead of directly opening a limit groove on the armrest seat.

[0019] (2) The utility model provides a limit structure at the lower end of the adjustment member. When the support seat rises to the point where the limit structure contacts the armrest cover, the support seat reaches the maximum rising distance, thereby preventing the support seat from detaching due to exceeding the rising limit during use, reducing safety hazards during use, and improving the user experience.

[0020] (3) The utility model installs a reset member between the support cover and the control part, so that during the adjustment process, the adjustment mechanism can automatically rebound to its locking structure and engage with the limit groove, making the adjustment process more convenient.

[0021] (4) The utility model ensures the stability and smoothness of the support seat during sliding through the design of the isolation structure and the guide ribs, while also reducing friction and noise.

[0022] (5) The utility model facilitates installation and positioning by means of a snap-fit ​​structure between the limiter and the armrest seat and installing an armrest cover on the armrest seat, so that the limiter can be fixed in multiple directions in the armrest seat and is not easy to fall off or shift, thereby ensuring the stability of the limiter during the lifting and lowering adjustment process.

[0023] To sum up, the utility model has the advantages of high structural strength, strong safety, convenient adjustment, high stability, convenient installation, etc. It has a wide range of applications, can meet the various adjustment needs of users, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a two-dimensional cross-sectional structural schematic diagram of the utility model;

[0026] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0027] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] Embodiment 1

[0031] like Figure 1-4 As shown, this embodiment provides a chair armrest that can be raised and lowered, including an armrest seat 1 and a support seat 2 slidably mounted on the armrest seat 1, a limiting member 3 is mounted on the inner side of the top of the armrest seat 1, and the limiting member 3 is longitudinally provided with a plurality of limiting grooves 31; an adjustment mechanism 4 is mounted in the support seat 2, and the adjustment mechanism 4 includes an adjustment member 41 rotatably connected to the support seat 2, and a locking structure 411 is provided at the lower end of the adjustment member 41 to engage with the limiting groove 31. The adjustment mechanism 4 cooperates with the limiting member 3 to achieve the adjustment of the armrest height, and the adjustment range is 0-10cm.

[0032] By installing the limiting member 3 on the armrest seat 1 to cooperate with the adjusting mechanism 4 instead of directly opening the limiting groove 31 on the armrest seat 1, the structural strength of the armrest seat 1 is improved and the service life of the armrest is extended.

[0033] like Figure 1 , 2 As shown, the adjustment mechanism 4 also includes an operating member 42, and the adjusting member 41 is laterally provided with a control portion 412. The operating member 42 is connected to the outer end of the control portion 412 and is arranged on the outer side of the support seat 2 for user operation convenience, and a protruding structure abutting against the outer wall of the support seat 2 is provided at the lower end of the operating member 42 to limit the rotation angle of the operating member 42.

[0034] like Figure 2-4As shown, an armrest cover 5 is installed on the top of the armrest seat 1 to fix the limiter 3 below it to prevent it from falling out. The armrest cover 5 is provided with a through hole 51, and an opening 52 is provided on the side of the through hole 51 facing the control part 412. The opening 52 can prevent the control part 412 of the adjustment member 41 from interfering with the armrest cover 5 during the rotation process. The adjustment member 41 is arranged in the armrest seat 1 through the through hole 51, and a limiter structure 413 is also provided at the lower end of the adjustment member 41.

[0035] By setting a limiting structure 413 at the lower end of the adjusting member 41, when the support seat 2 rises to the point where the limiting structure 413 contacts the armrest cover 5, the support seat 2 reaches the maximum rising distance, thereby preventing the support seat 2 from detaching due to exceeding the rising limit during use, reducing safety hazards during use, and improving the user experience.

[0036] like Figure 2 , 3 As shown, a support cover 6 is installed on the top of the support seat 2, an abutment column 61 is arranged below the support cover 6, and a reset member 7 is installed between the support cover 6 and the control part 412. The reset member 7 is preferably a spring. When the locking structure 411 is engaged with the lowermost limit groove 31, the lower end of the abutment column 61 abuts against the top surface of the armrest cover 5, thereby improving the stability of the support seat 2 when it moves to the lower limit.

[0037] By installing the reset member 7 between the support cover 6 and the control part 412, during the adjustment process, the adjustment mechanism 4 can automatically rebound until its locking structure 411 is engaged with the limiting groove 31, making the adjustment process more convenient.

[0038] like Figure 3 As shown, at least one isolating member 8 is installed on the outer side of the armrest seat 1, and the isolating member 8 is provided with an isolating structure 81. The inner side of the support seat 2 is provided with a guide rib 21 that abuts against the isolating structure 81.

[0039] The design of the isolation structure 81 and the guide ribs 21 ensures the stability and smoothness of the support base 2 during sliding, while also reducing friction and noise.

[0040] Embodiment 2

[0041] like Figure 2 , 3As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that: a first engaging structure 32 is longitudinally arranged at the upper end of the limiting member 3, and a contact structure 33 is transversely arranged at the lower end thereof, and the contact mechanism 33 is transversely contacted with the armrest seat 1. A first engaging groove 11 cooperating with the first engaging structure 32 is arranged at the upper end of the armrest seat 1, and a limiting step 12 cooperating with the contact structure 33 is arranged at the middle thereof. When the lower end of the contact structure 33 contacts the limiting step 12, the first engaging structure 32 is engaged with the first engaging groove 11, so that the upper end of the limiting member 3 and the upper end of the armrest seat 1 are in the same plane, which is convenient for the installation of the armrest cover 5.

[0042] By cooperating with the snap-fit ​​structure between the limit member 3 and the armrest seat 1 and installing the armrest cover 5 on the armrest seat 1, installation and positioning are facilitated, so that the limit member 3 is fixed in multiple directions in the armrest seat 1 and is not easy to fall off or shift, thereby ensuring the stability of the limit member 3 during the lifting and lowering adjustment process.

[0043] The lower end of the armrest cover 5 is provided with a second engaging structure 53 , and the upper end of the armrest seat 1 is provided with a second engaging groove 13 matched with the second engaging structure 53 , so as to prevent the armrest cover 5 from being installed in the wrong direction.

[0044] Embodiment 3

[0045] like Figure 1 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment is different from the first embodiment in that: the upper end of the support seat 2 is horizontally rotatably connected to a hand rest 9, and a mechanism for front and rear adjustment is also provided on the hand rest 9. The hand rest 9 can be adjusted by lifting, front and rear, and left and right rotation in conjunction with the limiter 3 and the adjustment mechanism 4 in the first and second embodiments, thereby improving the application range of the armrest and enabling the armrest to meet more adjustment requirements.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A chair armrest that can be raised and lowered, comprising an armrest seat and a support seat slidably mounted on the armrest seat, characterized in that: A limiting member is installed on the inner side of the top of the armrest seat, and a plurality of limiting grooves are longitudinally arranged on the limiting member; an adjusting mechanism is installed in the support seat, and the adjusting mechanism includes an adjusting member rotatably connected to the support seat, and a locking structure engaged with the limiting groove is arranged at the lower end of the adjusting member.

2. The chair armrest that can be raised and lowered according to claim 1, characterized in that: The adjustment mechanism further comprises an operating member, the adjusting member is laterally provided with a control portion, the operating member is connected to the outer end of the control portion and is arranged at the outer side of the support seat.

3. The chair armrest that can be raised and lowered according to claim 2, characterized in that: An armrest cover is installed on the top of the armrest seat. The armrest cover is provided with a through hole. The through hole is provided with an opening toward a side of the control part.

4. The chair armrest that can be raised and lowered according to claim 3, characterized in that: The adjusting member passes through the through hole and is arranged in the armrest seat, and a limiting structure is also arranged at the lower end of the adjusting member.

5. The chair armrest that can be raised and lowered according to claim 2, characterized in that: A support cover is installed on the top of the support seat, an abutment column is arranged below the support cover, and a reset member is installed between the support cover and the control part.

6. The chair armrest that can be raised and lowered according to claim 1, characterized in that: At least one isolating piece is installed on the outer side of the armrest seat, and an isolating structure is protruded from the isolating piece.

7. The chair armrest that can be raised and lowered according to claim 6, characterized in that: A guide rib abutting against the isolation structure is arranged on the inner side of the support seat.

8. The chair armrest that can be raised and lowered according to claim 1, characterized in that: The upper end of the limiting member is longitudinally provided with a first engaging structure, and the lower end thereof is transversely provided with an abutting structure. The upper end of the armrest seat is provided with a first engaging groove matched with the first engaging structure, and the middle part thereof is provided with a limiting step matched with the abutting structure.

9. The chair armrest capable of being raised and lowered according to claim 3, characterized in that: The lower end of the armrest cover is provided with a second clamping structure, and the upper end of the armrest seat is provided with a second clamping groove matched with the second clamping structure.

10. The chair armrest capable of being raised and lowered according to claim 1, characterized in that: The upper end of the support seat is horizontally rotatably connected with a hand rest.

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