Safety locking structure for horizontal adjustment of armrest of office chair

Abstract

The utility model belongs to the technical field of office chairs, and particularly relates to a safety locking structure for horizontal adjustment of armrests of an office chair. The upper end of the outward moving adjusting support is connected with a lifting adjusting hand support, a transverse supporting arm at the lower end of the outward moving adjusting support is inserted into inserting grooves in the two sides of the bottom of the adjusting base in a penetrating mode, and safety protection supports are arranged at outer ports of the inserting grooves in the left side and the right side. A tightness adjusting handle is connected into a reserved groove in the middle of a transverse supporting arm at the lower end of the outward moving adjusting support, and the tightness adjusting handle controls the tightness of the outward moving adjusting support to achieve outward moving and inward retracting of the adjustable handrail. The novel office chair is improved on the basis of a traditional office chair and adopts an outward moving type armrest structure, so that the sitting and lying directions can be increased to meet large-size people; in addition, the safety protection buckle structure is additionally arranged, so that potential safety hazards possibly caused by accidental falling of the handrail due to pressure after the handrail screws are loosened are effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of office chairs, and particularly relates to a horizontal adjustment and safety locking structure for the armrests of office chairs. Background Art

[0002] Office chairs are essential tools for mental workers during work. When sitting and working for a long time, people often suffer from cervical diseases due to excessive fatigue of the cervical vertebrae. One of the main reasons is that the cervical vertebrae cannot rest during the work process. When sitting workers rest or think, they will lean back on the chair backrest. However, the backrest of ordinary chairs can only provide rest for the back, but not for the neck.

[0003] At present, some office chair armrests are directly fixed to the base with bolts, which limits the left - right movement range of the armrests and cannot meet the comfortable sitting and lying needs of people with different body types. Therefore, a horizontal adjustment and safety locking structure for office chair armrests is provided. Summary of the Utility Model

[0004] To solve the defects and deficiencies of the prior art, the purpose of the utility model is to provide a horizontal adjustment and safety locking structure for office chair armrests with a simple structure, reasonable design and convenient use. It is improved based on traditional office chairs, adopts an outward - moving armrest structure, which can increase the sitting and lying positions to meet the needs of people with large body types; in addition, a safety protection buckle structure is added to effectively avoid potential safety hazards caused by accidental dropping of the armrest.

[0005] To achieve the above - mentioned purpose, the technical solution adopted by the utility model is: it includes a support bracket, an adjustment base, a seat cushion, an adjustable armrest, and an adjustable backrest; the adjustable armrest consists of a lift - adjustable handrest and an outward - moving adjustment bracket; the upper end of the outward - moving adjustment bracket is connected with a lift - adjustable handrest. Among them, the lower - end horizontal arm of the outward - moving adjustment bracket is inserted into the insertion slots on both sides of the bottom of the adjustment base. Safety protection brackets are arranged at the outer ports of the insertion slots on the left and right sides. And a tension adjustment handle is connected in the reserved slot in the middle of the lower - end horizontal arm of the outward - moving adjustment bracket. The tension adjustment handle controls the tightness of the outward - moving adjustment bracket to realize the outward movement and inward contraction of the adjustable armrest.

[0006] Preferably, the safety protection bracket is a strip - shaped structure, and protective loop buckles are arranged at both ends of the safety protection bracket and hang downward.

[0007] Preferably, the outward - moving adjustment bracket is inserted into the protective loop buckles, and the protective loop buckles at both ends of the safety protection bracket provide anti - falling protection for the outward - moving adjustment bracket.

[0008] Preferably, the entire safety protection bracket is inserted and fixed inside the adjustment base.

[0009] Preferably, the tightening and loosening adjustment handle is composed of a connecting bolt, a tightening and loosening seat, and an eccentric adjustment handle; the connecting bolt passes through the eccentric adjustment handle and the tightening and loosening seat from the bottom and is screwed to the bottom of the adjustment base. The eccentric adjustment handle squeezes the tightening and loosening seat through eccentric rotation, thereby changing the pressure between the tightening and loosening seat and the outward movement adjustment bracket.

[0010] After adopting the above structure, the beneficial effects of the present utility model are as follows:

[0011] 1. Provide stable support: Ensure that the armrest always remains in the required position during use, providing stable support for the arm; whether at work, reading, or resting, it can effectively reduce the fatigue of the arm.

[0012] 3. Improve the safety of use: Avoid potential safety hazards caused by the accidental dropping of the armrest; especially when the user needs to use the armrest as a support when getting up from a sitting position, there is no need to worry about the armrest suddenly losing support and causing the body to lose balance or even fall and get injured.

[0013] 4. Enhance the durability of the armrest: Reduce the damage to its structure caused by the frequent dropping or loosening of the armrest, and extend the service life of the armrest.

[0014] 5. Improve work efficiency: The stable armrest support allows the user to focus more on work without being distracted to adjust the armrest or worry about its stability. A comfortable posture helps reduce physical discomfort, thereby indirectly improving work efficiency.

[0015] 6. Adapt to more people: People with different heights, body types, and usage habits can adjust the armrest according to their own needs and fix it in a suitable position, expanding the scope of application of the office chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the present utility model will be described in detail by the following specific embodiments and the accompanying drawings.

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic rear structural diagram of the present utility model;

[0019] Figure 3 is for the Figure 2 partial enlarged schematic diagram of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the safety protection bracket 8 of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the tightening and loosening adjustment handle 7 of the present utility model;

[0022] Description of reference numerals: support bracket 1, adjustment base 2, seat cushion 3, adjustable armrest 4, liftable and adjustable armrest support 42, outward movement adjustment bracket 41, adjustable backrest 5, tension adjustment handle 7, connecting bolt 71, tension seat 72, eccentric adjustment handle 73, safety protection bracket 8, protection ring buckle 81. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be described below through specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0024] Here, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details less related to the present utility model are omitted.

[0025] Refer to Figures 1 - 5 As shown, the following technical solutions are adopted in this detailed implementation manner: It includes a support bracket 1, an adjustment base 2, a seat cushion 3, an adjustable armrest 4, and an adjustable backrest 5; the adjustable armrest 4 consists of a liftable and adjustable armrest support 42 and an outward movement adjustment bracket 41; the upper end of the outward movement adjustment bracket 41 is connected with a liftable and adjustable armrest support 42. Among them, the lower end horizontal arm of the outward movement adjustment bracket 41 is inserted into the insertion slots 6 on both sides of the bottom of the adjustment base 2. Safety protection brackets 8 are arranged at the outer ports of the insertion slots 6 on the left and right sides. And a tension adjustment handle 7 is connected in the reserved slot in the middle of the lower end horizontal arm of the outward movement adjustment bracket 41. The tension adjustment handle 7 controls the tightness of the outward movement adjustment bracket 41 to realize the outward movement and inward retraction of the adjustable armrest 4. The outward movement of the adjustable armrest 4 enables people with different heights, body types and usage habits to adjust the armrest according to their own needs and fix it in a suitable position, expanding the applicable range of the office chair.

[0026] Among them, the safety protection bracket 8 is in a strip structure, and protection ring buckles 81 hanging downward are arranged at both ends of the safety protection bracket 8; the protection ring buckles 81 at both ends of the safety protection bracket 8 provide anti-falling protection for the outward movement adjustment bracket 41; the whole of the safety protection bracket 8 is inserted and fixed inside the adjustment base 2. The protection ring buckle 81, as an anti-falling protection structure, can avoid potential safety hazards that may be brought by the accidental falling of the armrest; especially when leaning back or adjusting the seat, there is no need to worry that the armrest suddenly loses support and causes the body to lose balance, and it also reduces the damage to its structure caused by the frequent falling or loosening of the armrest, and prolongs the service life of the armrest.

[0027] In addition, the tension adjustment handle 7 is composed of a connecting bolt 71, a tension seat 72, and an eccentric adjustment handle 73; the connecting bolt 71 passes through the eccentric adjustment handle 73 from the bottom, and the tension seat 72 is screwed to the bottom of the adjustment base 2, and the eccentric adjustment handle 73 squeezes the tension seat 72 through eccentric rotation, thereby changing the pressure between the tension seat 72 and the outward adjustment bracket 41. The stable armrest support of the tension adjustment handle 7 allows the user to focus more on work without being distracted by adjusting the armrest or worrying about the stability of the armrest. A comfortable posture helps reduce physical discomfort, thereby indirectly improving work efficiency.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An office chair armrest horizontal adjustment safety locking structure, characterized in that: It includes a support bracket, an adjustment base, a seat cushion, an adjustable armrest, and an adjustable backrest; the adjustable armrest consists of a liftable and adjustable handrest and an outward movement adjustment bracket; The upper end of the outward movement adjustment bracket is connected to the liftable and adjustable handrest. Among them, the lower end transverse arm of the outward movement adjustment bracket is inserted into the internal plug-in slots on both sides of the bottom of the adjustment base. Safety protection brackets are provided at the outer ports of the plug-in slots on the left and right sides. And a tension adjustment handle is connected in the reserved slot in the middle of the lower end transverse arm of the outward movement adjustment bracket. The tension adjustment handle controls the tightness of the outward movement adjustment bracket to achieve the outward movement and inward retraction of the adjustable armrest.

2. The horizontal adjustment and safety locking structure of an office chair armrest according to claim 1, characterized in that: The safety protection bracket is a strip structure, and protective loop buckles that hang down are provided at both ends of the safety protection bracket.

3. The horizontal adjustment and safety locking structure of an office chair armrest according to claim 1, characterized in that: The outward movement adjustment bracket is inserted into the protective loop buckles, and the protective loop buckles at both ends of the safety protection bracket provide anti-fall protection for the outward movement adjustment bracket.

4. The horizontal adjustment and safety locking structure of an office chair armrest according to claim 2, wherein: The entire safety protection bracket is inserted and fixed inside the adjustment base.

5. The horizontal adjustment and safety locking structure of an office chair armrest according to claim 1, characterized in that: The tension adjustment handle consists of a connecting bolt, a tension seat, and an eccentric adjustment handle; the connecting bolt passes through the eccentric adjustment handle and the tension seat from the bottom and is screwed to the bottom of the adjustment base. The eccentric adjustment handle squeezes the tension seat through eccentric rotation, thereby changing the pressure between the tension seat and the outward movement adjustment bracket.

Images