Thin backrest of commercial vehicle seat

Abstract

The utility model relates to a thin backrest of a commercial vehicle seat, and belongs to the field of vehicle accessories, the thin backrest comprises a supporting framework and an elastic wrapping body, the supporting framework is wrapped with the elastic wrapping body, one end of the supporting framework is connected with a seat, and the elastic wrapping body is sleeved with a surface sleeve; the elastic wrapping body comprises a middle supporting part and two side supporting parts which are integrally formed, the two side supporting parts are located on the two opposite sides of the middle supporting part respectively, and the thickness of the end, close to the seat, of the middle supporting part within the length range of 370 mm is smaller than 35 mm. By reducing the thickness of the thin backrest, the longitudinal arrangement number of the seats can be increased, and the passenger capacity of the passenger car is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle accessories, in particular to a thin backrest of a business vehicle seat. BACKGROUND

[0002] Business passenger vehicles generally have more than 9 seats, a square cabin, and are mainly used to transport passengers. Such vehicles are mainly used for public transportation and group transportation.

[0003] The seat backrest structure of a business vehicle includes, from the inside out, an inner frame, a sponge wrapping body, and a face cover. The sponge wrapping body extends from the lower part of the inner frame and is connected to the seat. The relative angle of the backrest and the seat can be adjusted.

[0004] In current business vehicle seat designs, the thickness of the backrest is usually relatively thick to ensure comfort and support, which to some extent limits the effective use of the interior space of the vehicle. In traditional business passenger vehicle designs, increasing the number of seat rows usually requires lengthening the vehicle body or shortening the seat size, but these methods sacrifice passenger comfort or vehicle compliance. CONTENT OF THE UTILITY MODEL

[0005] To improve the above problems, the present application provides a thin backrest of a business vehicle seat.

[0006] The thin backrest of a business vehicle seat provided by the present application adopts the following technical solution:

[0007] A thin backrest of a business vehicle seat includes a support frame and an elastic covering body. The elastic covering body is wrapped around the support frame. One end of the support frame is connected to the seat. The elastic covering body is provided with a face cover. The elastic covering body includes one middle support part and two side support parts that are integrally formed with each other. The two side support parts are located on opposite sides of the middle support part. The length of one end of the middle support part near the seat is in the range of 370 mm, and the thickness is less than 35 mm.

[0008] By adopting the above technical solution, when a passenger sits on the seat, the body mainly leans against the middle support part. The thickness of the middle support part is relatively thin, which has less impact on the sitting space in the case of increasing the number of seat rows. The support strength of the backrest is maintained by the support frame. By thinning the thickness of the backrest, the number of seat arrangements in the longitudinal direction can be increased.

[0009] Preferably, a matching groove is formed on the side of the elastic covering body facing the passenger. The matching groove is located on the middle support part and between the middle support part and the side support part. A matching cloth strip is fixedly connected to the inner side of the face cover, and the matching cloth strip is embedded in the matching groove.

[0010] Preferably, the elastic covering body is connected with Velcro on the side away from the passenger, and the inner side of the face cover is fixedly connected with Velcro for mutual adhesion with the Velcro on the elastic covering body.

[0011] By adopting the technical scheme, the cooperation of the cooperation groove and the cooperation cloth strip and the cooperation of the Velcro are used to improve the relative stability of the face cover and the elastic covering body.

[0012] Preferably, the support framework is fixedly connected with a seat belt mounting rack, the seat belt mounting rack passes through the side support part, and an end of the seat belt mounting rack away from the support framework is located outside the elastic covering body.

[0013] Preferably, the support framework is fixedly connected with an armrest fixing frame, the armrest fixing frame is installed with an armrest handle, and an end of the armrest handle away from the armrest fixing frame passes out from an end of the elastic covering body away from the seat.

[0014] Preferably, the support framework comprises a steel pipe frame and installation handles, the steel pipe frame is in the shape of a Chinese character, the installation handles are two and are connected to two end heads of the steel pipe frame respectively, the installation handles are connected with the seat, and a plurality of reinforcing rib plates are fixedly connected to the steel pipe frame.

[0015] By adopting the technical scheme, the reinforcing rib plates can improve the shape stability of the steel pipe frame, and in the elastic covering body, the reinforcing rib plates can improve the structural stability of the middle support part, thereby improving the support capacity of the backrest to the passenger.

[0016] Preferably, an adjusting shaft hole is formed in one end of the installation handle, the adjusting shaft holes on the two installation handles are coaxial, an insertion rod is integrally formed at an end of the installation handle away from the adjusting shaft hole, and the insertion rod is inserted into the port of the steel pipe frame.

[0017] By adopting the technical scheme, the adjusting shaft hole will be passed through and fixed by a rotating shaft, and the support framework will be rotationally connected with the seat through the rotating shaft.

[0018] Preferably, the support framework further comprises a reinforcing beam, two ends of the reinforcing beam are respectively welded to the steel pipe frame, and the two ends of the reinforcing beam are respectively connected to the two installation handles through bolts.

[0019] By adopting the technical scheme, the connection and fixation of the installation handle to the steel pipe frame are realized.

[0020] Preferably, a reinforcing hole is formed in the steel pipe frame, and part of the structure of the elastic covering body is embedded in the reinforcing hole.

[0021] By adopting the technical scheme, part of the structure of the elastic covering body is embedded in the reinforcing hole, which is used to improve the stability of the relative connection state of the two parts.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. When passengers sit in the seat, their bodies mainly lean against the middle support. The middle support is relatively thin, so it has little impact on the seating space when the number of seats is increased. The support strength of the backrest is maintained by the support frame. By reducing the thickness of the backrest, the number of seats that can be arranged longitudinally can be increased.

[0024] 2. By setting up the reinforcing beam, the relative stability of the two ends of the steel pipe frame is reinforced by welding, and the two mounting handles are connected and fixed by bolts. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the overall structure of the thin backrest of a commercial vehicle seat in the embodiments of this application.

[0026] Figure 2 This is a schematic diagram illustrating the supporting skeleton in the embodiments of this application.

[0027] Figure 3 This is a schematic diagram of the back structure of the thin backrest of a commercial vehicle seat in the embodiments of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Elastic covering; 11. Mating groove; 12. Central support; 13. Side support; 14. Velcro; 2. Support frame; 21. Steel pipe frame; 211. Reinforcing hole; 22. Reinforcing rib plate; 23. Reinforcing beam; 231. Angle steel; 24. Mounting handle; 241. Insert rod; 242. Adjusting shaft hole; 3. Safety belt mounting bracket; 4. Handrail fixing bracket; 41. Handrail handle. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0030] This application discloses a thin backrest for a commercial vehicle seat, such as... Figure 1 As shown, the system includes a supporting frame 2 and an elastic covering 1. The elastic covering 1 wraps around the supporting frame 2, and an outer cover (not shown) is provided on the elastic covering 1. The elastic covering 1 is made of sponge and is formed by foaming, completing the covering of the supporting frame 2 during the closed-mold foaming process. The elastic covering 1 includes a central support portion 12 and two side support portions 13 integrally formed with each other, with the two side support portions 13 located on opposite sides of the central support portion 12.

[0031] like Figure 1 and 2As shown, the support framework 2 comprises a steel tube frame 21, two mounting handles 24 and a plurality of reinforcing rib plates 22. The steel tube frame 21 is in the shape of a Chinese character “fang”, the length direction of each reinforcing rib plate 22 is parallel, and the two ends of each reinforcing rib plate 22 are respectively welded and fixed on the two sides of the steel tube frame 21, which can improve the shape stability of the steel tube frame 21. In the elastic covering body 1, the reinforcing rib plates 22 can improve the structural stability of the middle support part 12, thereby improving the support capacity of the backrest to the passenger.

[0032] As shown in Figure 2 , one end of the mounting handle 24 is provided with an adjusting shaft hole 242, and the end of the mounting handle 24 away from the adjusting shaft hole 242 is integrally formed with a plug rod 241. The two plug rods 241 are respectively inserted into one port of the steel tube frame 21. The adjusting shaft holes 242 on the two mounting handles 24 are coaxial, and the adjusting shaft hole 242 is provided with a rotating shaft (not shown in the figure) for passing through and fixing the support framework 2. The support framework 2 is connected with the seat through the rotating shaft. The support framework 2 further comprises a reinforcing beam 23. The two ends of the reinforcing beam 23 are both angle steels 231. The two angle steels 231 are respectively welded with the side walls at the two ports of the steel tube frame 21. At the same time, the angle steels 231 are in contact with the mounting handles 24. The angle steels 231 and the mounting handles 24 are connected through bolts. The axial direction of the bolt is parallel to the axis of the adjusting shaft hole 242, thereby realizing the connection and fixation of the mounting handle 24 on the steel tube frame 21. The lower edge of the elastic covering body 1 is located near the bolt between the reinforcing beam 23 and the mounting handle 24. The steel tube frame 21 is provided with a reinforcing hole 211. In the process of foaming, part of the structure of the elastic covering body 1 is embedded in the reinforcing hole 211, which is used to improve the stability of the relative connection state of the two parts in this part.

[0033] As shown in Figure 1 and 3 , the length of the end of the middle support part 12 close to the seat is 370 mm, and the thickness of the end is less than 35 mm. The side of the elastic covering body 1 close to the passenger is provided with a matching groove 11. The matching groove 11 is located on the middle support part 12 and between the middle support part 12 and the side support part 13. The inner side of the face cover is fixedly connected with a matching cloth strip (not shown in the figure). The matching cloth strip is embedded in the matching groove 11. The matching of the two is used to improve the relative stability of the face cover and the elastic covering body 1. The side of the elastic covering body 1 away from the passenger is connected with a magic tape 14. The inner side of the face cover is fixedly connected with a magic tape used for mutual cooperation and adhesion with the magic tape 14 on the elastic covering body 1. The magic tape 14 on the elastic covering body 1 is a rough surface, and the magic tape in the face cover is a thorny surface. When the passenger sits on the seat, the body mainly leans on the middle support part 12. The thickness of the middle support part 12 is relatively thin, and the influence on the sitting space is small in the case of increasing the number of rows of seats. The support strength of the backrest is maintained by the support framework 2. By reducing the thickness of the backrest, the number of seats arranged in the longitudinal direction can be increased

[0034] As shown in Figure 1 and2 As shown, the top of the steel pipe frame 21 is fixedly connected with a safety belt mounting rack 3 and a handrail fixing rack 4, the safety belt mounting rack 3 passes through the side support part 13, and the end of the safety belt mounting rack 3 away from the support framework 2 is located outside the elastic covering body 1 and is used for mounting a buckle of a safety belt through a bolt. The handrail fixing rack 4 is provided with a handrail handle 41 mounted through a bolt, and the end of the handrail handle 41 away from the handrail fixing rack 4 passes out from the end of the elastic covering body 1 away from the seat.

[0035] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A business vehicle seat thin backrest, comprising a supporting framework (2) and an elastic covering body (1), the elastic covering body (1) being wrapped outside the supporting framework (2), one end of the supporting framework (2) being connected with a seat, and a surface cover being provided on the elastic covering body (1), characterized in that: The elastic covering body (1) comprises a middle supporting part (12) and two side supporting parts (13) which are integrally formed with each other, the two side supporting parts (13) are respectively located on opposite sides of the middle supporting part (12), and the length of the middle supporting part (12) near one end of the seat is 370mm, and the thickness is less than 35mm. ​ 2. A business class seat slim backrest according to claim 1, characterized in that: The side of the elastic covering body (1) facing the passenger is provided with a matching groove (11), the matching groove (11) is located on the middle supporting part (12) and between the middle supporting part (12) and the side supporting part (13), and the inner side of the face cover is fixedly connected with a matching cloth strip which is embedded in the matching groove (11).

3. A business class seat slim backrest according to claim 1, characterized in that: The side of the elastic covering body (1) away from the passenger is connected with a magic tape (14), and the inner side of the face cover is fixedly connected with a magic tape (14) which is used for mutual cooperation and adhesion with the magic tape (14) on the elastic covering body (1).

4. A business class seat slim backrest according to claim 1, characterized in that: The supporting framework (2) is fixedly connected with a safety belt mounting rack (3), the safety belt mounting rack (3) penetrates through the side supporting part (13), and one end of the safety belt mounting rack (3) away from the supporting framework (2) is located outside the elastic covering body (1).

5. A business class seat slim backrest according to claim 1, characterized in that: The supporting framework (2) is fixedly connected with an armrest fixing rack (4), the armrest fixing rack (4) is installed with an armrest handle (41), and one end of the armrest handle (41) away from the armrest fixing rack (4) penetrates out of one end of the elastic covering body (1) away from the seat.

6. A business class seat slim backrest according to any one of claims 1-5, characterized in that: The supporting framework (2) comprises a steel pipe frame (21) and a mounting handle (24), the steel pipe frame (21) is in the shape of a Chinese character 'fang', the mounting handle (24) has two ends and is connected to the two ends of the steel pipe frame (21), the mounting handle (24) is connected with the seat, and a plurality of reinforcing rib plates (22) are fixedly connected to the steel pipe frame (21).

7. A business class seat slim backrest according to claim 6, characterized in that: One end of the mounting handle (24) is provided with an adjusting shaft hole (242), the adjusting shaft holes (242) on the two mounting handles (24) are coaxial, one end of the mounting handle (24) away from the adjusting shaft hole (242) is integrally formed with a plug rod (241), and the plug rod (241) is inserted into the port of the steel pipe frame (21).

8. A business class seat slim backrest according to claim 7, characterized in that: The supporting framework (2) further comprises a reinforcing beam (23), the two ends of the reinforcing beam (23) are respectively welded with the steel pipe frame (21), and the two ends of the reinforcing beam (23) are respectively connected with the two mounting handles (24) through bolts.

9. A business class seat slim backrest according to claim 6, characterized in that: The steel pipe frame (21) is provided with a reinforcing hole (211), and part of the structure of the elastic covering body (1) is embedded in the reinforcing hole (211).

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