Electric chair back structure and electric chair frame

Abstract

The utility model relates to furniture technical field, concretely is a kind of electric chair back structure and electric chair chair frame, electric chair back structure includes chair back, top waist air bag and massage air bag, the top waist air bag is set in the chair back corresponding human waist position, the massage air bag is installed on the side of top waist air bag close to human body, the top waist air bag and the massage air bag are connected respectively through different air pipe and external gas supply device. Massage air bag is set on top waist air bag, i. e. it can provide strong support to human waist using top waist air bag, also can improve the massage intensity of massage air bag, enhance massage body feeling, and greatly simplify overall structure;In addition, top waist air bag and massage air bag can share an external gas supply device, significantly reduce manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to an electric chair back structure and an electric chair frame. Background Technology

[0002] Office chairs refer to various chairs provided for convenience in daily work and social activities; in a narrower sense, office chairs refer to chairs with backrests used for desk work in a seated position. Office chairs generally include casters, legs, gas springs, chassis, seat, armrests, seat-back connection, backrest, lumbar support, and headrest. Existing office chairs typically have functions such as movement, swivel, backrest adjustment, and leg support. With the continuous improvement of people's living standards, people's requirements for office chairs are also increasing, and office chairs with electric adjustment and massage functions are becoming increasingly popular. Many existing electric chairs have airbag massage functions, but airbag massage alone has relatively low massage intensity and a generally less than ideal massage experience. For example, Chinese invention patent CN101912337B discloses a massage chair seat cushion mechanism with a lumbar support function. A lumbar support frame is hinged to the front of the seat frame, and massage airbags are fixed to both sides of the upper part of the lumbar support frame. The lumbar support frame lifts the waist, allowing the lumbar spine to receive sufficient and appropriate stretching. Under the action of the massage airbags, it rotates and stretches, completing the lumbar support massage action and providing a stretching and massaging effect on the human waist. However, this structure is very complex and not convenient to use. Utility Model Content

[0003] The purpose of this utility model is to propose an electric chair back structure and an electric chair frame, aiming to solve the technical problems of existing electric chairs with general massage sensation and complex structures with lumbar support function.

[0004] To achieve the above objectives, this utility model proposes an electric chair back structure, including a chair back, a lumbar support airbag, and a massage airbag. The lumbar support airbag is located on the chair back at the position corresponding to the waist of the human body, and the massage airbag is installed on the side of the lumbar support airbag closer to the human body. The lumbar support airbag and the massage airbag are respectively connected to an external air supply device through different air pipes.

[0005] Preferably, at least two massage airbags are installed on the top waist airbag, and the massage airbags are arranged at intervals.

[0006] Preferably, the massage airbag is detachably mounted on the top and waist airbag via Velcro, straps, or restraint straps.

[0007] Preferably, the chair back includes a backrest shaping cotton, a backrest base frame, and a backrest sponge. The backrest base frame is embedded in the backrest shaping cotton, the backrest sponge is bonded to the backrest base frame and the backrest shaping cotton, and the lumbar support airbag is installed on the backrest sponge.

[0008] Preferably, the backrest shaping cotton has forward-extending side edges on both the left and right sides, and a limiting and positioning protrusion is provided on the front of the backrest shaping cotton. The side rod of the backrest base frame is embedded between the side edges and the limiting and positioning protrusion.

[0009] Preferably, the plurality of limiting and positioning protrusions are arranged at intervals in the vertical direction, and the uppermost limiting and positioning protrusion abuts against the lower end face of the top rod of the backrest base.

[0010] Preferably, the chair also includes a headrest, which includes head shaping cotton, a base frame, a rod, and head sponge. The head shaping cotton has a groove, the base frame is mounted on the rod and embedded in the groove, the head sponge is adhered to the head shaping cotton and the base frame, and the rod is inserted into the chair back from top to bottom.

[0011] Preferably, the headrest further includes a locking sleeve and a retaining spring. The base frame has a through hole extending vertically. The rod is inserted into the through hole, with its upper and lower ends protruding upwards and downwards relative to the base frame. The locking sleeve is fitted onto the rod and embedded in the through hole. The retaining spring is fitted onto the rod and located between the rod and the locking sleeve. The rod has a retaining groove, and the retaining spring is engaged in the retaining groove.

[0012] On the other hand, this utility model proposes an electric chair frame, including a seat, armrests, and the aforementioned backrest structure. The backrest is installed at the rear end of the seat, and armrests are installed on both sides of the seat. The armrests include a housing part and a die-casting part, which are detachably connected. The die-casting part is hollow inside, and after the housing part and the die-casting part are disassembled, the housing part can be placed inside the die-casting part.

[0013] Preferably, the box part includes a semi-elliptical frame and two semi-elliptical plates with the same structure. The two semi-elliptical plates are respectively installed on the left and right sides of the semi-elliptical frame. The end of the die-casting part is provided with a first through hole, the semi-elliptical frame is provided with a second through hole, and the semi-elliptical plate is provided with a third through hole. The first through hole, the second through hole, and the third through hole correspond to each other. The semi-elliptical frame, the semi-elliptical plate, and the die-casting part are connected and fixed by passing plastic rivets through the first through hole, the second through hole, and the third through hole in sequence and pressing them.

[0014] This utility model discloses an electric chair backrest structure and electric chair frame, which has at least the following beneficial effects: by setting the massage airbag on the top and lumbar airbag, the top and lumbar airbag can provide strong support for the human waist, improve the massage intensity of the massage airbag, enhance the massage sensation, and greatly simplify the overall structure; in addition, the top and lumbar airbag and the massage airbag can share a single external air supply device, which significantly reduces manufacturing costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the backrest structure of the electric chair of this utility model;

[0017] Figure 2 This is an exploded view of the chair back of this utility model;

[0018] Figure 3 This is a schematic diagram of the assembly structure of the backrest shaping cotton and the backrest base frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the backrest shaping cotton of this utility model;

[0020] Figure 5 This is a schematic diagram of the backrest base frame of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the headrest of this utility model;

[0022] Figure 7 This is an exploded structural diagram of the headrest of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the rod of this utility model;

[0024] Figure 9 This is a schematic diagram of the structure of the electric chair frame of this utility model;

[0025] Figure 10 This is a schematic diagram of the structure of the handrail of this utility model;

[0026] Figure 11 This is an exploded structural diagram of the handrail of this utility model;

[0027] Figure 12 This is a schematic diagram of the die-casting part of this utility model;

[0028] Figure 13 This is a schematic diagram of the box section of this utility model.

[0029] In the attached diagram: 1-Backrest, 11-Backrest shaping cotton, 111-Side, 112-Limiting and positioning protrusion, 12-Backrest base frame, 121-Side rod, 122-Top rod, 13-Backrest sponge, 2-Lumbar airbag, 3-Massage airbag, 4-Headrest, 41-Head shaping cotton, 411-Groove, 42-Base frame, 421-Through hole, 43-Rod, 431-Slot, 44-Head sponge, 45-Lock sleeve, 46-Snap spring, 5-Seat, 6-Armrest, 61-Box section, 611-Semi-elliptical frame, 612-Semi-elliptical plate, 613-Second through hole, 614-Third through hole, 62-Die-casting section, 621-First through hole, 63-Plastic rivet.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] Please see Figure 1An electric chair backrest structure 1 includes a backrest 1, a lumbar airbag 2, and a massage airbag 3. The backrest 1 supports the user's back. The lumbar airbag 2 is specifically positioned on the front of the backrest 1, corresponding to the user's lumbar region. A massage airbag 3 is installed on the lumbar airbag 2, specifically located on one side of the front of the lumbar airbag 2 (i.e., the side closest to the user). The lumbar airbag 2 and the massage airbag 3 are each connected to an external air supply device via independent air tubes. The external air supply device can supply air to the lumbar airbag 2 alone, so that the lumbar airbag 2 can be inflated and expanded, providing strong support to the waist. The external air supply device can also supply air to the massage airbag 3, so that the massage airbag 3 can massage the body by inflating and deflating. Of course, the external air supply device can also supply air to the lumbar airbag 2 and the massage airbag 3 at the same time. When the lumbar airbag 2 is inflated, it can push the massage airbag 3 to one side of the body, and then the external air supply device can supply and deflat the massage airbag 3, so that the massage airbag 3 can massage the waist. Compared to the massage chair seat cushion mechanism with lumbar support function disclosed in Chinese invention patent CN101912337B, this technical solution sets the massage airbag 3 on the lumbar support airbag 2. This allows the lumbar support airbag 2 to provide strong support for the human waist, while also increasing the massage intensity and enhancing the massage sensation, and greatly simplifying the overall structure. In addition, the lumbar support airbag 2 and the massage airbag 3 can share a single external air supply device, significantly reducing manufacturing costs. The lumbar support airbag 2 provides a gentler support for the human waist, unlike the more rigid feeling of a lumbar support frame.

[0035] Please see Figure 1 The lumbar airbag 2 is equipped with at least two massage airbags 3, which are arranged at intervals. In this embodiment, two massage airbags 3 are installed on the lumbar airbag 2. By setting two or more massage airbags 3, the massage effect can be improved, allowing massage of different positions of the waist and enhancing the massage sensation.

[0036] The massage airbag 3 can be detachably installed on the lumbar airbag 2. Specifically, it can be attached using Velcro, straps, or restraint straps. The massage airbag 3 and the lumbar airbag 2 are independent and detachable, facilitating mass production and allowing for customization of the massage airbag 3 to meet different user needs (e.g., increasing the number of massage airbags or customizing their arrangement), thus enhancing its practicality. Furthermore, Velcro, straps, and restraint straps simplify the installation of the massage airbag 3.

[0037] Please see Figure 2The chair back 1 includes a backrest shaping foam 11, a backrest base frame 12, and a backrest sponge 13. Both the backrest shaping foam 11 and the backrest sponge 13 are made by foaming and shaping sponge, while the backrest base frame 12 is a metal frame (such as an iron frame or a stainless steel frame). The front of the backrest shaping foam 11 has a space for installing the backrest base frame 12 and the backrest sponge 13. The backrest base frame 12 is embedded in the front of the backrest shaping foam 11, and the backrest sponge 13 is adhered to the backrest base frame 12 and the backrest shaping foam 11. The lumbar support airbag 2 is specifically installed on the backrest sponge 13. Specifically, when assembling the chair back 1, glue can be applied to the backrest shaping foam 11 and / or the backrest base frame 12, and then the backrest shaping foam 11 and the backrest base frame 12 are glued and fixed. Then, glue is applied to one side of the backrest sponge 13, and the backrest sponge 13 is adhered to the backrest shaping foam 11 and the backrest base frame 12. The chair back 1 adopts a structure composed of three parts: backrest shaping cotton 11, backrest base frame 12, and backrest sponge 13. This allows the backrest shaping cotton 11, backrest base frame 12, and backrest sponge 13 to be separated before assembly, which can reduce transportation costs and improve production efficiency and product turnover. Compared with the traditional wooden frame structure, the chair back 1 structure of this embodiment is simpler and easier to manufacture, and the backrest base frame 12 can also ensure the structural strength of the chair back 1.

[0038] Please see Figures 3 to 5 The backrest shaping cotton 11 extends forward on both sides of its front surface to form two side edges 111. The front surface of the backrest shaping cotton 11 is provided with limiting and positioning protrusions 112, specifically on the inner side of each side edge 111, with the limiting and positioning protrusions 112 protruding forward. The backrest base frame 12 is a frame structure composed of horizontal and vertical bars. The left side bar 121 of the backrest base frame 12 is embedded between the left side edge 111 and the left limiting and positioning protrusion 112, while the right side bar 121 of the backrest base frame 12 is embedded between the right side edge 111 and the right limiting and positioning protrusion 112. The backrest shaping cotton 11, with its side edges 111 and limiting and positioning protrusions 112, facilitates the positioning and installation of the backrest base frame 12, improving both assembly efficiency and assembly accuracy.

[0039] Please see Figure 4The backrest shaping cotton 11 has multiple limiting and positioning protrusions 112 on its front side, specifically, the same number of limiting and positioning protrusions 112 are provided on both the left and right sides; the multiple limiting and positioning protrusions 112 are arranged at intervals in the vertical direction. In this embodiment, the backrest shaping cotton 11 has four limiting and positioning protrusions 112 on the left side and four limiting and positioning protrusions 112 on the right side. The uppermost limiting and positioning protrusion 112 abuts against the lower end face of the top rod 122 of the backrest base frame 12, that is, the uppermost limiting and positioning protrusion 112 not only limits and positions the side rod 121 of the backrest base frame 12, but also limits and positions the top rod 122 of the backrest base frame 12 in the vertical direction. This arrangement not only improves the assembly efficiency of the backrest base frame 12 and the backrest shaping cotton 11, but also improves the assembly accuracy.

[0040] Please see Figure 1 , Figure 6 and Figure 7 The chair back 1 structure also includes a headrest 4, which comprises a head shaping cotton 41, a base frame 42, rods 43, and head foam 44. The head shaping cotton 41 has a groove 411 on its front side, and the base frame 42 is mounted on the rods 43 and embedded in the groove 411. The base frame 42 is specifically a cuboid structure, and the shape of the groove 411 is adapted to the base frame 42, therefore the groove 411 is also cuboid in shape. Two rods 43 are specifically provided, and the base frame 42 is mounted on both rods 43 simultaneously. During assembly, the base frame 42 is first mounted on the two rods 43, then the base frame 42 is embedded in the groove 411 of the head shaping cotton 41, then glue is applied to one side of the head foam 44, and finally the head foam 44 is glued to the front side of the head shaping cotton 41, covering the base frame 42. After the headrest 4 is assembled, the rod 43 protrudes downward relative to the head shaping cotton 41. The rod 43 is then inserted into the chair back 1 from top to bottom, allowing the headrest 4 to support the user's head. The headrest 4 can also be adjusted up and down relative to the chair back 1. Specifically, slots 431 are spaced apart along the length of the rod 43, and corresponding positions are set on the chair back 1. By engaging the slots 431 with the corresponding positions, the headrest 4 can be raised to different heights relative to the chair back 1. This design of the headrest 4 simplifies the structure, makes manufacturing more convenient, reduces transportation costs, and increases assembly efficiency. Furthermore, the base frame 42 ensures the structural strength of the headrest 4.

[0041] Please see Figure 7The headrest 4 also includes a locking sleeve 45 and a retaining spring 46. In this embodiment, two rods 43 are provided, so four locking sleeves 45 and four retaining springs 46 are provided, with one locking sleeve 45 and one retaining spring 46 forming a set. The base frame 42 is a hollow rectangular metal frame with openings on both sides. Two through holes 421 are provided on both the upper and lower ends of the base frame, with the through holes 421 on the upper and lower ends facing each other. The rods 43 are inserted into the through holes 421, and the rods 43 protrude vertically relative to the base frame 42. The length of the lower protrusion of the rod 43 is significantly greater than the length of the upper protrusion, to facilitate the insertion of the lower end of the rod 43 onto the chair back 1. The locking sleeve 45 is a hollow plastic sleeve with a T-shaped cross-section, and the retaining spring 46 is an annular metal ring with a raised inner ring. One rod 43 corresponds to two locking sleeves 45 and two retaining rings 46. The rod 43 protrudes upward and downward through the through holes 421 on the upper and lower ends of the base frame 42. One locking sleeve 45 is fitted onto the rod 43 from top to bottom and is embedded in the through hole 421. Then, a retaining ring 46 is fitted onto the rod 43 from top to bottom and is embedded between the locking sleeve 45 and the rod 43. Please refer to [link / reference]. Figure 8 A slot 431 is provided on the rod 43. When the retaining spring 46 is embedded between the locking sleeve 45 and the rod 43, the protrusion of the inner ring of the retaining spring 46 is precisely engaged in the slot 431. The through hole 421 on the lower end face of the rod 43 and the base frame 42 is also connected and fixed in this way by another set of locking sleeves 45 and retaining springs 46. The difference is that the locking sleeves 45 and retaining springs 46 are fitted onto the rod 43 from bottom to top. The other rod 43 is also connected and fixed to the base frame 42 in the same way. By setting the locking sleeves 45 and retaining springs 46, the base frame 42 and the rod 43 can be firmly connected, and abnormal noise can be prevented between the base frame 42 and the rod 43.

[0042] On the other hand, please see Figure 9 This utility model also proposes an electric chair frame, including a seat 5, armrests 6, and a backrest 1. The seat 5 is for the user to sit on and supports the user's buttocks; armrests 6 are installed on both sides of the seat 5, and the armrests 6 are used to support the user's hands; the backrest 1 is installed at the rear end of the seat 5. Please refer to [link / reference]. Figure 10The armrest 6 includes a box section 61 and a die-cast section 62. The main body of the box section 61 is made of wood or plastic, while the die-cast section 62 is made of die-cast metal and is hollow inside. The box section 61 and the die-cast section 62 are detachably connected. After the box section 61 and the die-cast section 62 are disassembled, the box section 61 can be placed inside the die-cast section 62. Therefore, during packaging and transportation, the box section 61 and the die-cast section 62 can be disassembled first, and the box section 61 can be placed inside the die-cast section 62, so that the box section 61 and the die-cast section 62 overlap, reducing the packaging volume and lowering transportation costs. The armrest 6 is detachably installed on the chair frame. During packaging and transportation, the entire armrest 6 can be disassembled relative to the chair frame first, and then the die-cast section 62 and the box section 61 of the armrest 6 can be disassembled separately, thus further reducing the packaging volume and lowering transportation costs.

[0043] Please see Figures 11 to 13 The box section 61 includes a semi-elliptical frame 611 and two identical semi-elliptical plates 612, which are respectively installed on the left and right sides of the semi-elliptical frame 611. The die-casting section 62 is a plate bent into a semi-elliptical shape. The die-casting section 62 has a first through hole 621 at its end, specifically at both ends; the semi-elliptical frame 611 has a second through hole 613, specifically at both the upper and lower ends; the semi-elliptical plate 612 has a third through hole 614, specifically at both the upper and lower ends; the first through hole 621, the second through hole 613, and the third through hole 614 at the upper end correspond to each other, and the first through hole 621, the second through hole 613, and the third through hole 614 at the lower end correspond to each other. By sequentially passing plastic rivets 63 through the first through hole 621, the second through hole 613, and the third through hole 614 and pressing them down, the plastic rivets 63 are locked by a mechanical structure, thereby connecting and fixing the semi-elliptical frame 611, the semi-elliptical plate 612, and the die-cast part 62. This design makes the installation of the handrail 6 simpler and more efficient, replacing the method of fixing with a wooden box and a rivet gun.

[0044] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A backrest (1) structure for an electric chair, characterized in that, It includes a chair back (1), a lumbar airbag (2) and a massage airbag (3). The lumbar airbag (2) is located on the chair back (1) at the waist position of the human body. The massage airbag (3) is installed on the side of the lumbar airbag (2) close to the human body. The lumbar airbag (2) and the massage airbag (3) are respectively connected to an external air supply device through different air pipes.

2. The electric chair backrest (1) structure according to claim 1, characterized in that, At least two massage airbags (3) are installed on the top waist airbag (2), and the massage airbags (3) are arranged at intervals.

3. The electric chair backrest (1) structure according to claim 1, characterized in that, The massage airbag (3) is detachably mounted on the top waist airbag (2) by Velcro, straps or restraint straps.

4. The electric chair backrest (1) structure according to claim 1, characterized in that, The chair back (1) includes a backrest shaping cotton (11), a backrest base frame (12) and a backrest sponge (13). The backrest base frame (12) is embedded in the backrest shaping cotton (11), and the backrest sponge (13) is bonded to the backrest base frame (12) and the backrest shaping cotton (11). The lumbar support airbag (2) is installed on the backrest sponge (13).

5. The electric chair backrest (1) structure according to claim 4, characterized in that, The backrest shaping cotton (11) has forward-extending side edges (111) on both the left and right sides, and a limiting positioning protrusion (112) is provided on the front of the backrest shaping cotton (11). The side rod (121) of the backrest base frame (12) is embedded between the side edge (111) and the limiting positioning protrusion (112).

6. The electric chair backrest (1) structure according to claim 5, characterized in that, Multiple limiting and positioning protrusions (112) are arranged at intervals in the vertical direction, with the uppermost limiting and positioning protrusion (112) abutting against the lower end face of the top rod (122) of the backrest base (12).

7. The electric chair backrest (1) structure according to claim 1, characterized in that, It also includes a headrest (4), which includes a head shaping cotton (41), a base frame (42), a rod (43) and a head sponge (44). The head shaping cotton (41) has a groove (411). The base frame (42) is installed on the rod (43) and embedded in the groove (411). The head sponge (44) is bonded to the head shaping cotton (41) and the base frame (42). The rod (43) is inserted into the backrest (1) from top to bottom.

8. The electric chair backrest (1) structure according to claim 7, characterized in that, The headrest (4) also includes a locking sleeve (45) and a retaining spring (46). The base frame (42) has a through hole (421) that runs vertically through it. The rod (43) is inserted into the through hole (421) and its upper and lower ends protrude upward and downward relative to the base frame (42). The locking sleeve (45) is fitted onto the rod (43) and embedded in the through hole (421). The retaining spring (46) is fitted onto the rod (43) and located between the rod (43) and the locking sleeve (45). The rod (43) has a retaining groove (431) and the retaining spring (46) is engaged in the retaining groove (431).

9. An electric chair frame, characterized in that, The chair includes a seat (5), armrests (6), and a backrest (1) structure as described in any one of claims 1 to 8. The backrest (1) is installed at the rear end of the seat (5), and armrests (6) are installed on both sides of the seat (5). The armrests (6) include a box part (61) and a die-cast part (62), which are detachably connected. The die-cast part (62) is hollow inside, and after the box part (61) and the die-cast part (62) are disassembled, the box part (61) can be placed inside the die-cast part (62).

10. An electric chair frame according to claim 9, characterized in that, The box section (61) includes a semi-elliptical frame (611) and two semi-elliptical plates (612) with the same structure. The two semi-elliptical plates (612) are respectively installed on the left and right sides of the semi-elliptical frame (611). The end of the die-casting part (62) is provided with a first through hole (621), the semi-elliptical frame (611) is provided with a second through hole (613), and the semi-elliptical plate (612) is provided with a third through hole (614). The first through hole (621), the second through hole (613), and the third through hole (614) correspond to each other. The semi-elliptical frame (611), the semi-elliptical plate (612), and the die-casting part (62) are connected and fixed by passing plastic rivets (63) through the first through hole (621), the second through hole (613), and the third through hole (614) in sequence and pressing them.

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