CN2680116Y - Seat lumbar adjustment device - Google Patents

Abstract

The utility model provides a chair waist rest adjusting device, a plurality of longitudinal arranged caves are arranged in the middle of the transverse section at the top end of the backrest supporting part connected with a chair cushion at intervals forward, a plurality of continuous guide strip grooves are arranged at the top sides of the caves arranged at intervals adjacent to each other, and the waist rest part is provided with protruding buckling parts embedded into the caves at consistent intervals; two sides of the transverse section of the supporting part are connected with hollow backrest bearing frames which are provided with preset accommodating layer surfaces towards the front periphery, and the hollow backrest bearing frames are provided with good ventilation and air permeability backrest parts. Therefore, when the waist rest combined with the backrest supporting part is adjusted up and down, the waist rest is only required to be pushed forwards and moved to be separated from the recess part by the back side of the backrest bearing frame by the hand part, and is adjusted to the required height along the continuous guide strip groove, and then the buckling part of the waist rest is sleeved between the corresponding recesses and is limited by the leaning part at the adjacent side.

Description

Seat lumbar adjustment device

technical field

The utility model relates to a daily necessities, and in particular provides a seat backrest adjustment device, which is mainly used to adjust the backrest assembled in the preset section of the backrest of the chair, so that the height can be adjusted according to the user's needs and can be fixed. exact bearing.

current technology

All kinds of functional chairs developed by the industry, in order to meet the needs of different consumers, will design ergonomic mechanisms in the seat cushion, backrest, armrest and other units of the preset shape of the chair, so that individuals can sit in the chair. To obtain the expected comfort level; and for these various components of various chairs, in terms of functional design, the product will be easy to use as the goal, and chairs with their own characteristics will be developed for general consumers to choose.

Utility model content

The purpose of this utility model is to provide a chair lumbar support device which can conveniently adjust the position and height of the lumbar support and make the waist comfortable to touch.

The seat lumbar adjustment device provided by the utility model includes a backrest support part connected to the seat cushion, a backrest unit with a preset width on one side of the backrest support part, and a position-adjustable seat installed between the backrest units. Lumbar support; it is characterized in that: a plurality of grooves arranged vertically from the middle area of the horizontal section at the top of the backrest support part of the chair cushion is set forward, and adjacent to the top side of the multiple grooves arranged at intervals, a continuous guide is provided. Lead grooves, the side of the waist backrest is provided with protruding buckle parts at a consistent distance, and the buckle parts are embedded in the recesses set in the backrest support part; the two sides of the support part horizontal section are connected with facing There is a hollow backrest support frame with a preset accommodation level on the front periphery, and a resting part with good ventilation and ventilation is installed on the backrest support frame.

Accordingly, when adjusting the up and down position of the lumbar support combined with the backrest support part, you only need to use your hands to move the lumbar forward from the rear side of the backrest frame to get out of the recess, and follow the continuous guide strip Adjust the azimuth of the groove to the desired height, and then make the waist rest its buckle part to be inserted between the corresponding recesses and be restricted by the azimuth of the abutting parts on the adjacent side.

The utility model adopts the above-mentioned technical scheme, the design of several recesses and guide strip grooves, so that the protruding buckle parts can be embedded between the recesses, so that the position and height of the waist support can be adjusted conveniently, and when adjusting up and down It can keep stable; in addition, the well-ventilated resting parts combined with the frame of the hollow backrest can impose urgent elastic restrictions on the waist rest, making the touch more comfortable.

Description of drawings

Figure 1: An exploded perspective view of each component of the lumbar adjustment device of the present invention;

Figure 2: Appearance of the utility model waist adjustment device;

Figure 3: The side view and the back side of the lumbar adjustment device of the utility model;

Fig. 4: Schematic diagram of implementing the height adjustment action of the lumbar adjustment device of the utility model.

The parts represented by each label in the figure are: 1 backrest support part; 11 connecting piece; 12 horizontal section; 13 recess; 14 guide bar groove; ; 31 accommodating level; 32 pillow; 4 resting parts; 41 frame;

Detailed ways

The seat lumbar adjustment device designed by the utility model, referring to Fig. 1, is mainly aimed at the lumbar adjustment device assembled between the backrest of the chair. 3. It is composed of resting parts 4 and decorative panels 5.

The back support part 1, which cooperates with an L-shaped connecting part 11 correspondingly abuts against the inner side of the back supporting part 1 extending in a conforming shape, and the L-shaped connecting part is locked on the bottom side of the seat cushion and the vertical section of the back supporting part 1 through the screw fastening assembly. On the paragraph level, there is a horizontal section 12 with a preset width on the top of the backrest support part 1. The middle area of the horizontal section 12 is provided with a plurality of longitudinally arranged recesses 13 at a distance from the front layer, adjacent to the plurality of recesses arranged at intervals. 13 Connected continuous guide bar grooves 14 are arranged on the top side layer.

The lumbar support 2 is designed according to the shape of the top horizontal section 12 of the backrest support part 1. It has a predetermined width and is flexible. There is an erection part 21 on the back side of the lumbar support part 2, and there is a buckle part 22 in between. , the buckling portion 22 protrudes out and conforms to the distance between the recesses 13 on the back support portion 1 .

The backrest support frame 3 is a hollow frame body with a preset width integrated with both sides of the top side horizontal section 12 of the backrest support part 1. The front periphery of the backrest support frame 3 must maintain a predetermined depth of accommodation. On the layer 31, a pillow 32 is arranged at the middle part of the top of the backrest supporting frame 3.

The rest part 4 is a backrest front part designed according to the width of the backrest bearing frame 3 front side receiving layer 31. The periphery of the rest part 4 is positioned and combined with a stronger rigid frame 41 so that the surface layer has Good air-permeable strong and tough top contact piece 42.

Assembling (refer to Fig. 2 and Fig. 3) is to fit the fastening part 22 formed on the back side of the lumbar support part 1 into the recess 13 provided between the backrest support part 1, and then take the back rest with good ventilation and ventilation characteristics. The placement part 4 is fitted into the front side receiving layer 31 of the backrest supporting frame 3, and the two components are positioned as a whole through the screw assembly 6. After that, a decorative plate 5 is taken to cover the backside of the backrest support part 1 correspondingly, so as to The screw assembly 6 restricts the azimuth of the two components, and accordingly, they are combined into a backrest assembly 7 combined with the lumbar support 2 .

Adjustment implementation (refer to Figure 4A state), after the user sits in the chair, depending on the comfort level of use, use the hands to move the waist support 2 forward from the back side of the backrest frame 3 to push the buckle part 22 in between Can get out of the corresponding recess 13 (as shown in Figure 4B), and then use the hands to adjust the waist support 2 as a whole along the continuous guide groove 14 to the desired height (as shown in Figure 4C), and then wait for completion After adjusting the orientation, fit the buckle part 22 on the back side of the lumbar support 2 into the recesses 13 of the corresponding paragraphs.

Claims (1)

1. A seat lumbar adjustment device, comprising a backrest support part connected to a chair cushion, a backrest unit with a preset width on one side of the backrest support part, and a lumbar seat installed between the backrest units for position adjustment. Depend on; It is characterized in that: connecting from the middle area of the top horizontal section of the backrest support part of the chair cushion, there are a plurality of longitudinally arranged recesses spaced forward, and adjacent to the top side of the multi-channel recesses arranged at intervals, a continuous guide bar groove connected with each other is provided. , the side of the waist backrest is provided with a protruding buckle part at a consistent distance, and the buckle part is embedded with the recess set in the backrest support part; the two sides of the horizontal section of the support part are connected with a The hollow backrest supporting frame of the preset accommodation level is equipped with a propping part with good ventilation and air permeability on the backrest supporting frame.

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