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CN-224206482-U - Backrest for chair

CN224206482UCN 224206482 UCN224206482 UCN 224206482UCN-224206482-U

Abstract

The utility model discloses a backrest. The back rest comprises a back rest body and an ear plate, wherein a plurality of front-back through holes and a plurality of concave first reinforcing grooves are formed in the back rest body, a notch is formed in the bottom of the back rest body, at least one insert mounting groove extending to the front side is formed in the left inner side face and the right inner side face of the notch, four groups of front-back through first connecting holes are formed in the upper end and the lower end of the left side and the right side of the back rest body respectively, a plurality of concave second reinforcing grooves are formed in the front side and the rear side face of the ear plate respectively, four groups of front-back through second connecting holes are formed in the upper end and the lower end of the left side and the right side of the ear plate respectively, and two groups of first connecting holes located on the left side and the right side of the back rest body and two groups of second connecting holes located on the left side and the right side of the ear plate can be fixedly connected. The backrest can improve structural strength through the through hole and the reinforcing groove, can be extended and extended through the mounting ear plate, and is suitable for mounting requirements of seats or sofas with longer size.

Inventors

  • XU LIUMING
  • TIAN ZHONGNAN

Assignees

  • 浙江凌创昇宇光电科技有限公司

Dates

Publication Date
20260508
Application Date
20250626

Claims (10)

  1. 1. A backrest is characterized by comprising The novel backrest comprises a backrest body (10), wherein a plurality of front-back through openings (11) and a plurality of concave first reinforcing grooves (12) are formed in the backrest body (10), a notch (13) is formed in the bottom of the backrest body (10), at least one insert mounting groove (14) extending to the front side is formed in the left inner side surface and the right inner side surface of the notch (13), and four groups of front-back through first connecting holes (15) are respectively formed in the upper end and the lower end of the left side and the lower end of the backrest body (10); The ear plate (20), the front and back sides of the ear plate (20) are provided with a plurality of concave second strengthening grooves (21), and the upper and lower ends of the left and right sides of the ear plate (20) are respectively provided with four groups of second connecting holes (22) which are communicated from front to back; Wherein, two groups of first connecting holes (15) positioned at one side of the left and right of the backrest body (10) and two groups of second connecting holes (22) positioned at one side of the left and right of the ear plate (20) can be fixedly connected.
  2. 2. A backrest as claimed in claim 1, characterized in that the backrest body (10) and the ear plate (20) are both made of plastic, wood or metal.
  3. 3. A backrest according to claim 1, characterized in that each of the openings (11) is provided in the upper, middle, lower, left and/or right part of the backrest body (10), respectively.
  4. 4. A backrest according to claim 1, characterized in that the upper end of the notch (13) is provided with an undercut recess (16).
  5. 5. A backrest according to claim 4, characterized in that a part of the through opening (11) extends into the recess plate (16).
  6. 6. A backrest according to claim 1, characterized in that the front and rear ends of each set of first connecting holes (15) are located in two first grooves (17), respectively.
  7. 7. A backrest according to claim 1, characterized in that the second stiffening grooves (21) on the same side of the ear plate (20) are in communication.
  8. 8. A backrest according to claim 1, characterized in that the front and rear ends of each set of the second connecting holes (22) are located in two second grooves (23), respectively.
  9. 9. A backrest according to claim 1, characterized in that each set of said first connection holes (15) and each set of said second connection holes (22) has two.
  10. 10. A backrest according to claim 1, characterized in that the backrest body (10) and the ear plate (20) each have a plurality of pieces and are connected at intervals in sequence.

Description

Backrest for chair Technical Field The utility model relates to the field of articles for daily use, in particular to a backrest. Background Conventional seat or sofa backs are generally monolithic, not only structurally fragile, but also are not flexible for use with longer-sized seats or sofas. Disclosure of utility model In order to solve the problems, the utility model provides a backrest which not only can improve the structural strength through various through openings and reinforcing grooves, but also can be extended and extended through the mounting ear plates, thereby being suitable for the mounting requirement of seats or sofas with longer size. According to one aspect of the present utility model, there is provided a backrest comprising: The novel back rest comprises a back rest body, wherein a plurality of front-back through openings and a plurality of concave first reinforcing grooves are formed in the back rest body, a notch is formed in the bottom of the back rest body, at least one insert mounting groove extending to the front side is formed in the left inner side surface and the right inner side surface of the notch, and four groups of front-back through first connecting holes are respectively formed in the upper end and the lower end of the left side and the right side of the back rest body; The ear plate is provided with a plurality of concave second reinforcing grooves on the front side and the rear side of the ear plate, and four groups of second connecting holes which are communicated from front to rear are respectively arranged at the upper end and the lower end of the left side and the right side of the ear plate; the two groups of first connecting holes positioned at the left side and the right side of the backrest body and the two groups of second connecting holes positioned at the left side and the right side of the ear plate can be fixedly connected. In some embodiments, the backrest body and the ear panels are each made of plastic, wood, or metal. It is beneficial to describe alternative materials for the back rest body and the ear panels. In some embodiments, each of the through openings is provided at an upper, middle, lower, left and/or right portion of the backrest body, respectively. The advantage is that the positions where the ports can be provided on the backrest body are described. In some embodiments, the notch is provided with an inward concave plate at its upper end. The novel backrest has the advantages that the concave plate can further improve the structural strength of the backrest body. In some embodiments, a portion of the through opening extends onto the recess plate. The beneficial effects are that the arrangement mode of the partial through holes below is further described. In some embodiments, the front and rear ends of each group of the first connection holes are respectively located in the two first grooves. The first grooves are beneficial in that the first connecting holes are arranged in the sunken grooves, so that the situation of abrasion is reduced. In some embodiments, each of the second stiffening grooves on the same side of the ear panel is in communication. This is advantageous in that the distribution of the second stiffening grooves on the ear panel is further described. In some embodiments, the front and rear ends of each set of the second connection holes are respectively located in two second grooves. The second grooves are beneficial in that the second connecting holes are arranged in the sunken grooves, so that the situation of abrasion is reduced. In some embodiments, each set of the first connection holes and each set of the second connection holes has two. This is advantageous in that a suitable number of first and second connection holes per set is further described. In some embodiments, the backrest body and the ear panels each have a plurality of pieces and are connected in sequence at intervals. The backrest has the advantages that the backrest with a longer size can be formed together to meet the installation requirement of a seat or a sofa with a longer size. Drawings FIG. 1 is a schematic view showing a front side structure of a backrest body of a backrest according to an embodiment of the present utility model; FIG. 2 is a schematic view of the rear side structure of the backrest body shown in FIG. 1; Fig. 3 is a schematic view showing a front side structure of an ear plate of a backrest according to an embodiment of the present utility model. In the figure, a backrest body 10, a through hole 11, a first reinforcing groove 12, a notch 13, an inserting piece mounting groove 14, a first connecting hole 15, a concave plate 16, a first groove 17, an ear plate 20, a second reinforcing groove 21, a second connecting hole 22 and a second groove 23 are shown. Detailed Description The utility model is described in further detail below with reference to the accompanying drawings. As shown in fig. 1 to 3, the backrest can be applied to a