Frame mesh surface type seat waist rest

Abstract

The utility model relates to a frame mesh type seat waist rest which comprises a frame mesh type rest body, a spring, a core seat, a connecting pin, an adjusting seat and an installing seat, the front end face of the core seat is an inclined face, a spring positioning hole cavity is formed in the center of the core seat, the front end of the core seat is inserted into a core seat inserting groove, and the spring is located between the core seat and the core seat inserting groove. The position, close to the lower vertex angle, of the front end of the core base is hinged to the wall of the core base inserting groove through a connecting pin, the rear portion of the core base is embedded and inserted into the adjusting base, the adjusting base is fixedly connected with the installing base, and an installing hole is formed in the installing base. The frame net surface type seat waist rest can be quickly mounted on a seat back frame, when the waist of a human body leans against the rest body of the waist rest, the rest body can provide a buffering effect so as to reduce impact on the waist, and meanwhile, the frame net surface type seat waist rest also has an elevation angle adjusting function, so that the elevation angle of the rest body is more appropriate, the rest body is more attached to the waist, and the waist is more comfortable; and the depth of the seat waist rest can be adjusted, so that the use requirements of people with different body types can be met.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a frame mesh type lumbar support for seats. Background Technology

[0002] Currently, the backrest design of conventional chairs primarily focuses on supporting the upper back, offering relatively weak or inadequate support for the lumbar region. Therefore, prolonged sitting in such chairs can easily lead to lower back discomfort and increased fatigue. While chairs specifically designed for lumbar support exist, their structural design generally suffers from drawbacks such as lack of elasticity, cushioning, and adjustable depth, resulting in less than ideal performance. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a frame mesh type lumbar support for a seat to overcome the defects and shortcomings of existing similar products as described in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a frame mesh type lumbar support, including a frame mesh type support body, a spring, a core seat, an adjustment seat, and a mounting seat. A core seat slot is integrally formed in the middle of the support body, and a spring positioning post is formed in the core seat slot. The front end face of the core seat is an inclined plane with an inclination angle of 65° to 75°, and a spring positioning hole cavity is formed in the center. The front end of the core seat is inserted into the core seat slot. The spring is located between the core seat and the core seat slot. One end of the spring is sleeved on the spring positioning post in the core seat slot, and the other end is embedded in the spring positioning hole cavity of the core seat. At the same time, the front end of the core seat is hinged to the core seat slot wall by a connecting pin near its lower corner. Due to the limiting effect of its lower corner, the support body can only rotate within a certain angle range (depending on the inclination angle of the front end face of the core seat) towards the front end face of the core seat. The two ends of the connecting pin are limited by end caps.

[0005] The rear part of the core seat is inserted into the adjusting seat. The core seat can be pulled out or pushed into the adjusting seat to a certain extent. The adjusting seat is provided with a core seat locking and positioning mechanism. The core seat locking and positioning mechanism includes a locking block positioning plate that can be installed / removed on the adjusting seat and a locking block and a top spring set in a straight groove in the inner wall of the locking block positioning plate. The locking block has a protrusion with rounded edges. A serrated groove is formed on the surface of the core seat along the pulling direction of the core seat. Under the pushing action of the top spring, the protrusion of the locking block is locked in the serrated groove on the surface of the core seat.

[0006] The adjustment seat is fixedly connected to the mounting seat by bolts. The mounting seat has symmetrically arranged mounting holes for mounting the mounting seat to the chair back frame by bolts.

[0007] Preferably, the outer wall of the core seat and the inner wall of the adjustment seat are respectively formed with matching straight grooves and protrusions.

[0008] The beneficial effects of this utility model are: the frame mesh type lumbar support can be quickly installed onto the seat back frame. When the human body's waist rests against the backrest, the backrest provides a cushioning effect under the support of springs (i.e., the backrest can elastically flip backward within a certain angle range), thereby reducing the impact on the waist. It also serves as a tilt angle adjustment function, making the tilt angle of the backrest more suitable and the backrest more closely fit the waist, making the waist more comfortable. In addition, the depth of the lumbar support can also be adjusted (by pulling out / pushing back the core seat from the adjustment seat), thereby meeting the usage needs of people of different body types. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0011] Figure 2 This is an exploded structural diagram of the present invention;

[0012] Figure 3 , Figure 4 These are front and bottom views of the assembly structure of the spring, core seat, and adjusting seat in this utility model. Figure 4 The locking plate on the adjusting seat has been removed, leaving only the locking block and the top spring to clearly demonstrate the mating structure.

[0013] Figure 5 , Figure 6 The outer and inner sides of the card block positioning plate are shown respectively. Figure 6 When showing the inner side of the card block positioning plate, a card block and a top spring were added to clearly demonstrate the assembly structure;

[0014] Figure 7 , Figure 8 , Figure 9 , Figure 10 These are schematic diagrams of the core base from the bottom, right, front, and top views. Figure 9 The dashed line indicates perspective.

[0015] In the diagram: 1. Backing body; 1-1. Core seat slot; 1-1-1. Spring positioning post; 2. Spring; 3. Core seat; 3-1. Spring positioning hole cavity; 3-2. Lower top corner; 3-3. Serrated groove; 3-4. Straight groove; 4. Connecting pin; 5. End cover; 6. Adjusting seat; 6-1. Locking block positioning plate; 6-2. Locking block; 6-2-1. Protrusion; 6-3. Top spring; 7. Mounting seat. Detailed Implementation

[0016] A type of framed mesh seat lumbar support, such as Figures 1 to 10 As shown, it includes a frame-like support body 1, a spring 2, a core seat 3, a connecting pin 4, an adjusting seat 6, and a mounting seat 7. A core seat slot 1-1 is integrally formed in the middle of the support body 1. A spring positioning post 1-1-1 is formed within the core seat slot 1-1. The front end face of the core seat 3 is an inclined plane with an angle of 65° to 75°, and a spring positioning cavity 3-1 is formed in the center. The front end of the core seat 3 is inserted into the core seat slot 1-1. The spring 2 is located between the core seat 3 and the core seat slot 1-1. The spring 2... One end is fitted onto the spring positioning post 1-1-1 inside the core seat slot 1-1, and the other end is embedded in the spring positioning hole 3-1 of the core seat 3. Simultaneously, the front end of the core seat 3, near its lower apex 3-2, is hinged to the wall of the core seat slot 1-1 via a connecting pin 4. Due to the limiting effect of its lower apex 3-2, the backrest 1 can only rotate within a certain angle range (depending on the tilt angle of the front end face of the core seat 3) towards the front face of the core seat 3. The two ends of the connecting pin 4 are limited by end caps 5. When the human waist rests against the backrest 1, the backrest 1, supported by the spring 2, provides a cushioning effect (i.e., the backrest 1 can elastically rotate backward within a certain angle range), thereby reducing the impact on the waist. It also serves as a tilt adjustment function, making the tilt angle of the backrest 1 more suitable, allowing the backrest 1 to fit the waist more closely and providing greater comfort.

[0017] See Figures 3 to 6 The rear part of the core seat 3 is inserted into the adjusting seat 6. The core seat 3 can be pulled out or pushed into the adjusting seat 6 to a certain extent. The adjusting seat 6 is provided with a core seat locking and positioning mechanism. The core seat locking and positioning mechanism includes a locking block positioning plate 6-1 that can be installed / removed on the adjusting seat 6, and a locking block 6-2 and a top spring 6-3 set in a straight groove in the inner wall of the locking block positioning plate 6-1. A protrusion 6-2-1 with a smooth edge is formed on the locking block 6-2. A serrated groove 3-3 is formed on the surface of the core seat 3 along the pulling direction of the core seat 3. Under the pushing action of the top spring 6-3, the protrusion 6-2-1 of the locking block 6-2 is locked in the serrated groove 3-3 on the surface of the core seat 3. Through the core seat snap-fit ​​positioning mechanism, the core seat 3 can be fixed relative to the adjusting seat 6 within a certain force range. When it is necessary to adjust the depth of the backrest 1, the core seat 3 can be pulled out / pushed back from the adjusting seat 6 by hand holding the backrest 1. Each tooth of the serrated groove 3-3 on the core seat 3 forms an adjustment position.

[0018] The adjustment seat 6 is fixedly connected to the mounting seat 7 by bolts. The mounting seat 7 has symmetrically arranged mounting holes so that the mounting seat 7 can be quickly installed onto the chair back frame by bolts.

[0019] To improve the fit between the core seat 3 and the adjusting seat 6, and to ensure that the core seat 3 can slide smoothly within the adjusting seat 6, corresponding straight grooves 3-4 and protrusions are formed on the outer wall of the core seat 3 and the inner wall of the adjusting seat 6, respectively. (See also...) Figure 7 , Figure 10 .

[0020] The above embodiments are only used to explain the present utility model and are not intended to limit the protection of the present utility model. Any non-substantial modifications made based on the essential solution of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A frame mesh type lumbar support for a seat, comprising a frame mesh type backrest (1), characterized in that: It also includes a spring (2), a core seat (3), a connecting pin (4), an adjusting seat (6), and a mounting seat (7). A core seat slot (1-1) is integrally formed in the middle of the body (1). A spring positioning post (1-1-1) is formed in the core seat slot (1-1). The front end face of the core seat (3) is an inclined plane with an angle of 65° to 75°, and a spring positioning cavity (3-1) is formed in the center. The front end of the core seat (3) is inserted into the core seat slot (1-1). The spring (2) is located between the core seat (3) and the core seat slot (1-1). Between them, one end of the spring (2) is fitted onto the spring positioning post (1-1-1) in the core seat slot (1-1), and the other end is embedded in the spring positioning hole (3-1) of the core seat (3); at the same time, the front end of the core seat (3) is hinged to the wall of the core seat slot (1-1) by the connecting pin (4) near its lower apex (3-2). Due to the limiting effect of its lower apex (3-2), the support body (1) can only rotate within a certain angle range towards the front end face of the core seat (3), and the two ends of the connecting pin (4) are limited by the end cap (5); The rear part of the core seat (3) is inserted into the adjusting seat (6). The core seat (3) can be pulled out or pushed into the adjusting seat (6) to a certain extent. A core seat snap-fit ​​positioning mechanism is provided in the adjusting seat (6). The core seat snap-fit ​​positioning mechanism includes a snap-fit ​​positioning plate (6-1) that can be installed / removed on the adjusting seat (6) and a snap-fit ​​block (6-2) and a top spring (6-3) in a straight groove in the inner wall of the snap-fit ​​positioning plate (6-1). A protrusion (6-2-1) with a smooth edge is formed on the snap-fit ​​block (6-2). A serrated groove (3-3) is formed on the surface of the core seat (3) along the pulling direction of the core seat (3). Under the pushing action of the top spring (6-3), the protrusion (6-2-1) of the snap-fit ​​block (6-2) is snapped into the serrated groove (3-3) on the surface of the core seat (3). The adjustment seat (6) is fixedly connected to the mounting seat (7) by bolts. The mounting seat (7) has symmetrically arranged mounting holes for mounting the mounting seat (7) to the chair back frame by bolts.

2. The frame mesh type lumbar support for seats according to claim 1, characterized in that: The outer wall of the core seat (3) and the inner wall of the adjustment seat (6) are respectively formed with matching straight grooves (3-4) and protrusions.

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