Novel multifunctional chair back

Abstract

The utility model discloses a novel multifunctional chair back which comprises a chair back support, the front side of the chair back support is at least provided with a backrest frame and a waist rest frame from top to bottom, a waist rest connecting frame is connected between the chair back support and the waist rest frame, and a plurality of backrest elastic adjusting assemblies are arranged between the chair back support and the backrest frame. A position adjusting assembly used for adjusting the position of the waist rest frame is arranged between the chair back support and the waist rest connecting frame, a plurality of waist rest elastic adjusting assemblies are arranged between the waist rest connecting frame and the waist rest frame, the back and the waist of a user are supported through the backrest frame and the waist rest frame respectively, the comfort degree of the chair back of the chair is improved, meanwhile, the backrest frame can achieve the static or dynamic function, and the user experience is improved. And the back fatigue can be better relieved.

Description

[TECHNICAL FIELD]

[0001] The utility model relates to a novel multifunctional chair back. [BACKGROUND]

[0002] At present, the chair back of existing seat is in fixed state, cannot elastically move and abut against the back of user, and plays the role of relieving back fatigue, and the comfort is low. [SUMMARY]

[0003] The utility model overcomes the insufficient prior art, provides a novel multifunctional chair back.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A novel multifunctional chair back, characterized by comprising a chair back support, the upper side of the front side of the chair back support is provided with a backrest frame and a waist rest frame respectively, a waist rest connecting frame is connected between the chair back support and the waist rest frame, a plurality of backrest elastic adjusting components are arranged between the chair back support and the backrest frame, a position adjusting component for adjusting the position of the waist rest frame is arranged between the chair back support and the waist rest connecting frame, and a plurality of waist rest elastic adjusting components are arranged between the waist rest connecting frame and the waist rest frame.

[0006] The novel multifunctional chair back as described above, characterized by the backrest locking component arranged between the chair back support and the backrest frame for blocking the movement of the backrest frame.

[0007] The novel multifunctional chair back as described above, characterized by the backrest locking component comprising a rotating locking piece arranged on the backrest frame close to the position of the backrest elastic adjusting component and rotatable, the backrest frame is provided with a positioning protrusion, the rotating locking piece is provided with a locking positioning groove and an unlocking positioning groove for cooperating with the positioning protrusion to make the rotating locking piece be positioned in the locking state and the unlocking state through rotation, and the chair back support is provided with a limiting protrusion extending outward and abutting against the rotating locking piece to block the movement of the backrest elastic adjusting component when the rotating locking piece is in the locking state.

[0008] The novel multifunctional chair back as described above, characterized by the rotating locking piece being provided with a rotating handle.

[0009] The novel multifunctional chair back as described above, characterized by the three backrest elastic adjusting components arranged between the chair back support and the backrest frame, two of which are arranged on the left and right sides of the upper end between the chair back support and the backrest frame, and the other is arranged on the middle of the lower end between the chair back support and the backrest frame.

[0010] The new multifunctional chair back has the advantages that the backrest elastic adjusting assembly is provided with the backrest positioning convex column arranged on the front side of the chair back support and extending outward, the backrest support is provided with the backrest support through hole in which the backrest positioning convex column is sleeved, the inner side surface of the backrest support through hole is provided with the backrest support through hole convex post arranged around and extending inward, the backrest spring is sleeved on the backrest positioning convex column, the two ends of the backrest spring are connected with the chair back support and the backrest support through hole convex post respectively, and the backrest stopper is arranged on the outer side of the backrest support through hole convex post in the backrest support through hole and is connected with the backrest positioning convex column to block the backrest support from being separated.

[0011] The new multifunctional chair back has the advantages that the backrest elastic adjusting assembly is provided with the backrest positioning convex column arranged on the front side of the chair back support and extending outward, the backrest support is provided with the backrest support through hole in which the backrest positioning convex column is sleeved, the inner side surface of the backrest support through hole is provided with the backrest support through hole convex post arranged around and extending inward, the backrest spring is sleeved on the backrest positioning convex column, the two ends of the backrest spring are connected with the chair back support and the backrest support through hole convex post respectively, and the backrest stopper is arranged on the outer side of the backrest support through hole convex post in the backrest support through hole and is connected with the backrest positioning convex column to block the backrest support from being separated.

[0012] The new multifunctional chair back has the advantages that the backrest elastic adjusting assembly is provided with the backrest positioning convex column arranged on the front side of the chair back support and extending outward, the backrest support is provided with the backrest support through hole in which the backrest positioning convex column is sleeved, the inner side surface of the backrest support through hole is provided with the backrest support through hole convex post arranged around and extending inward, the backrest spring is sleeved on the backrest positioning convex column, the two ends of the backrest spring are connected with the chair back support and the backrest support through hole convex post respectively, and the backrest stopper is arranged on the outer side of the backrest support through hole convex post in the backrest support through hole and is connected with the backrest positioning convex column to block the backrest support from being separated.

[0013] The new multifunctional chair back has the advantages that the backrest elastic adjusting assembly is provided with the backrest positioning convex column arranged on the front side of the chair back support and extending outward, the backrest support is provided with the backrest support through hole in which the backrest positioning convex column is sleeved, the inner side surface of the backrest support through hole is provided with the backrest support through hole convex post arranged around and extending inward, the backrest spring is sleeved on the backrest positioning convex column, the two ends of the backrest spring are connected with the chair back support and the backrest support through hole convex post respectively, and the backrest stopper is arranged on the outer side of the backrest support through hole convex post in the backrest support through hole and is connected with the backrest positioning convex column to block the backrest support from being separated.

[0014] The new multifunctional chair back has the advantages that the backrest elastic adjusting assembly is provided with the backrest positioning convex column arranged on the front side of the chair back support and extending outward, the backrest support is provided with the backrest support through hole in which the backrest positioning convex column is sleeved, the inner side surface of the backrest support through hole is provided with the backrest support through hole convex post arranged around and extending inward, the backrest spring is sleeved on the backrest positioning convex column, the two ends of the backrest spring are connected with the chair back support and the backrest support through hole convex post respectively, and the backrest stopper is arranged on the outer side of the backrest support through hole convex post in the backrest support through hole and is connected with the backrest positioning convex column to block the backrest support from being separated.

[0015] The new multifunctional chair back has the advantages that the backrest elastic adjusting assembly is provided with the backrest positioning convex column arranged on the front side of the chair back support and extending outward, the backrest support is provided with the backrest support through hole in which the backrest positioning convex column is sleeved, the inner side surface of the backrest support through hole is provided with the backrest support through hole convex post arranged around and extending inward, the backrest spring is sleeved on the backrest positioning convex column, the two ends of the backrest spring are connected with the chair back support and the backrest support through hole convex post respectively, and the backrest stopper is arranged on the outer side of the backrest support through hole convex post in the backrest support through hole and is connected with the backrest positioning convex column to block the backrest support from being separated.

[0016] The utility model discloses a backrest support and waist rest support are set up on the chair back support, and the backrest support and waist rest support support user's back and waist respectively, improve the chair back comfort degree. On the other hand, a plurality of backrest elastic adjusting components are equipped between the chair back support and the backrest support, can lock or unlock the backrest elastic adjusting component according to actual use demand, can make the backrest support realize static or dynamic function, better relieve back fatigue, a plurality of waist rest elastic adjusting components are equipped between the waist rest connecting frame and the waist rest support, make the waist rest support realize dynamic function, relieve waist fatigue, and the position adjusting component for adjusting the position of the waist rest support is equipped between the chair back support and the waist rest connecting frame, can independently adjust the position of the waist rest support up and down or front and back according to user's demand, better support user's waist position. [SUMMARY]

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is one of the exploded view of the utility model;

[0019] Figure 3 It is the second exploded view of the utility model;

[0020] Figure 4 It is the third exploded view of the utility model;

[0021] Figure 5 It is the fourth exploded view of the utility model. [DETAILED DESCRIPTION]

[0022] The technical scheme in the embodiment of the utility model will be described clearly and completely in combination with the drawings.

[0023] It should be noted that all directionality indications (such as up, down, left, right, front, back...) in the embodiment of the utility model are only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), if the specific posture changes, then the directionality indications also change accordingly. In addition, the description of "preferred", "suboptimal" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or suggesting its relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "preferred", "suboptimal" can explicitly or implicitly include at least one of the features.

[0024] As Figures 1-4As shown, a new multifunctional chair back includes a chair back support 1, the front side of which is provided with a backrest support 2 and a waist support 3 respectively, a waist support connecting support 4 is connected between the chair back support 1 and the waist support 3, a plurality of backrest elastic adjusting assemblies 5 are arranged between the chair back support 1 and the backrest support 2, a position adjusting assembly 6 for adjusting the position of the waist support 3 is arranged between the chair back support 1 and the waist support connecting support 4, and a plurality of waist support elastic adjusting assemblies 7 are arranged between the waist support connecting support 4 and the waist support 3. In actual use, the backrest support 4 is dynamically moved by the backrest elastic adjusting assembly 5, which better relieves the fatigue of the back, and the waist support 3 is dynamically moved by the waist support elastic adjusting assembly 7, which better supports the waist of the user and relieves the fatigue of the waist. Meanwhile, the up-down and front-back positions of the waist support 3 can be independently adjusted by the position adjusting assembly 6, so that the waist support 3 better supports the waist of the user and relieves the fatigue of the waist.

[0025] As shown, Figures 1-3 a backrest locking assembly 8 for blocking the movement of the backrest support 2 is arranged between the chair back support 1 and the backrest support 2. The backrest locking assembly 8 can realize the locking function of the backrest support 2, so that the backrest support 2 is in a static state.

[0026] As shown, Figures 1-3 the backrest locking assembly 8 includes a rotating locking piece 81 arranged on the backrest support 2 and rotatable, the backrest support 2 is provided with a positioning protrusion 82, the rotating locking piece 81 is provided with a locking positioning groove 83 and an unlocking positioning groove 84 which respectively cooperate with the positioning protrusion 82 to make the rotating locking piece 81 be positioned in the locked state and the unlocked state by rotating, and the chair back support 1 is provided with a limiting protrusion 85 which extends outward and abuts against the rotating locking piece 81 to block the movement of the backrest elastic adjusting assembly 5 when the rotating locking piece 81 is in the locked state. When it is needed to lock the backrest support 2, the rotating locking piece 81 is pulled to make the locking positioning groove 83 on the rotating locking piece 81 be buckled with the positioning protrusion 82 on the backrest support 2, so that the rotating locking piece 81 is in the locked state, and the limiting protrusion 85 abuts against the rotating locking piece 81 to block the movement of the backrest elastic adjusting assembly 5. When it is unlocked, the rotating locking piece 81 is pulled to make the unlocking positioning groove 84 on the rotating locking piece 81 be buckled with the positioning protrusion 82 on the backrest support 2, so that the rotating locking piece 81 is in the unlocked state, and the rotating locking piece 81 does not contact with the limiting protrusion 85 to be unlocked. The rotating locking piece 81 is provided with a rotating handle 86, which facilitates the pulling of the rotating locking piece 81.

[0027] As shown, Figures 1-3 three backrest elastic adjusting assemblies 5 are arranged between the chair back support 1 and the backrest support 2, two of which are arranged on the left and right sides of the upper end between the chair back support 1 and the backrest support 2, and the other is arranged on the middle of the lower end between the chair back support 1 and the backrest support 2, which better makes the backrest support 2 dynamically move.

[0028] As Figures 1-3 shown, the backrest elastic adjustment assembly 5 includes a backrest positioning protrusion 51 arranged on the front side of the chair back support 1 and extending outward, the backrest support 2 is provided with a backrest support through hole 52 sleeved on the backrest positioning protrusion 51, the inner side of the backrest support through hole 52 is provided with a backrest support through hole boss 53 arranged around and extending inward, the backrest positioning protrusion 51 is sleeved with a backrest spring 54, the two ends of the backrest spring 54 are connected with the chair back support 1 and the backrest support through hole boss 53 respectively, and the inner side of the backrest support through hole 52 located outside the backrest support through hole boss 53 is provided with a backrest stop piece 55 connected with the backrest positioning protrusion 51 to block the backrest support 2 from being separated. When the backrest support 2 moves backward, the backrest support through hole 52 moves backward along the backrest positioning protrusion 51 and compresses the backrest spring 54, so that the backrest support 2 moves backward, and when the backrest support 2 is not supported by the backrest, the backrest support 2 moves forward to reset under the resetting action of the backrest spring 54, realizing the dynamic movement of the backrest support 2.

[0029] As Figure 1 and Figures 4-5 shown, four waist rest elastic adjustment assemblies 7 are arranged between the waist rest connecting support 4 and the waist rest support 3, and the four waist rest elastic adjustment assemblies 7 are arranged at the four corner positions between the waist rest connecting support 4 and the waist rest support 3, which better realizes the dynamic movement of the backrest support 2.

[0030] As Figure 1 and Figures 4-5 shown, the waist rest elastic adjustment assembly 7 includes a waist rest positioning protrusion 71 arranged on the waist rest connecting support 4, the waist rest support 3 is provided with a waist rest support through hole 72 sleeved on the waist rest positioning protrusion 71, the inner side of the waist rest support through hole 72 is provided with a waist rest support through hole boss 73 arranged around and extending inward, the waist rest positioning protrusion 71 is sleeved with a waist rest spring 74, the two ends of the waist rest spring 74 are connected with the waist rest connecting support 4 and the waist rest support through hole boss 73 respectively, and the inner side of the waist rest support through hole 72 located outside the waist rest support through hole boss 73 is provided with a waist rest stop piece 75 connected with the waist rest positioning protrusion 71 to block the waist rest support 3 from being separated. Similarly, when the waist rest support 3 moves backward, the waist rest support through hole 72 moves backward along the waist rest positioning protrusion 71 and compresses the waist rest spring 74, so that the waist rest support 3 moves backward, and when the waist rest support 3 is not supported by the backrest, the waist rest support 3 moves forward to reset under the resetting action of the compressed waist rest spring 74, realizing the dynamic movement of the backrest support 3.

[0031] As Figure 1 and Figures 4-5As shown, the position adjusting assembly 6 comprises a slide rail 61 vertically arranged on the front side of the back support 1, the slide rail 61 is provided with a sliding block 62 capable of sliding adjusting the up-down position of the lumbar support 3, the lumbar support connecting frame 4 is connected with the sliding block 62, thereby realizing the up-down position adjustment of the lumbar support 3; the front side of the sliding block is provided with a sliding block extension 63 extending outward, the top surface of the sliding block extension 63 is provided with a sliding block groove 64, the rear side of the lumbar support connecting frame 4 is provided with a connecting frame sliding part 65 inserted into the sliding block groove 64 for adjusting the front-rear position of the lumbar support 3, thereby realizing the front-rear position adjustment of the lumbar support 3.

[0032] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation, direct or indirect application in other related technical fields under the utility model concept of the present application, and the contents of the present application specification and drawings are included in the patent protection range of the present application.

Claims

1. A new multi-functional chair back characterized by: The backrest support (1) is provided with a backrest frame (2) and a waist rest frame (3) on the front side, respectively, and a waist rest connecting frame (4) is connected between the backrest support (1) and the waist rest frame (3), a plurality of backrest elastic adjusting assemblies (5) are arranged between the backrest support (1) and the backrest frame (2), a position adjusting assembly (6) for adjusting the position of the waist rest frame (3) is arranged between the backrest support (1) and the waist rest connecting frame (4), and a plurality of waist rest elastic adjusting assemblies (7) are arranged between the waist rest connecting frame (4) and the waist rest frame (3).

2. A novel multi-functional chair back as claimed in claim 1, wherein: The backrest support (1) and the backrest frame (2) are provided with a backrest locking assembly (8) for blocking the movement of the backrest frame (2).

3. A novel multi-functional chair back as claimed in claim 2, wherein: The backrest locking assembly (8) comprises a rotating locking piece (81) arranged on the backrest frame (2) near the position of the backrest elastic adjusting assembly (5) and rotatable, the backrest frame (2) is provided with a positioning protrusion (82), the rotating locking piece (81) is provided with a locking positioning groove (83) and an unlocking positioning groove (84) for cooperating with the positioning protrusion (82) to make the rotating locking piece (81) be positioned in the locked state and the unlocked state by rotating, and the backrest support (1) is provided with a limiting protrusion (85) extending outward and abutting against the rotating locking piece (81) to block the movement of the backrest elastic adjusting assembly (5) when the rotating locking piece (81) is in the locked state.

4. A novel multi-functional chair back as claimed in claim 3, wherein: The rotating locking piece (81) is provided with a rotating handle (86).

5. A new multi-functional chair back as claimed in claim 1, wherein: The backrest support (1) and the backrest frame (2) are provided with three backrest elastic adjusting assemblies (5), two of which are arranged on the left and right sides of the upper end between the backrest support (1) and the backrest frame (2), and the other is arranged on the middle of the lower end between the backrest support (1) and the backrest frame (2).

6. A new multi-functional chair back as claimed in any one of claims 1 or 3 or 5, wherein: The backrest elastic adjusting assembly (5) comprises a backrest positioning protruding column (51) arranged on the front side of the backrest support (1) and extending outward, the backrest frame (2) is provided with a backrest frame through hole (52) sleeved on the backrest positioning protruding column (51), the inner side of the backrest frame through hole (52) is provided with a backrest frame through hole boss (53) arranged around and extending inward, a backrest spring (54) is sleeved on the backrest positioning protruding column (51), the two ends of the backrest spring (54) are connected with the backrest support (1) and the backrest frame through hole boss (53), respectively, and a backrest blocking piece (55) is arranged on the outer side of the backrest frame through hole boss (53) in the backrest frame through hole (52) to block the disengagement of the backrest frame (2).

7. A new multi-functional chair back as claimed in claim 1, wherein: The waist rest connecting frame (4) and the waist rest frame (3) are provided with four waist rest elastic adjusting assemblies (7), which are arranged on the four corners between the waist rest connecting frame (4) and the waist rest frame (3).

8. A new multi-functional chair back as claimed in claim 1 or 7, wherein: The lumbar support elastic adjusting assembly (7) comprises a lumbar support positioning protrusion (71) arranged on the lumbar support connecting frame (4), the lumbar support frame (3) is provided with a lumbar support frame through hole (72) sleeved on the lumbar support positioning protrusion (71), the inner side of the lumbar support frame through hole (72) is provided with a lumbar support frame through hole protrusion (73) arranged around and extending inward, the lumbar support spring (74) is sleeved on the lumbar support positioning protrusion (71), the two ends of the lumbar support spring (74) are connected with the lumbar support connecting frame (4) and the lumbar support frame through hole protrusion (73) respectively, the inner side of the lumbar support frame through hole (72) located outside the lumbar support frame through hole protrusion (73) is provided with a lumbar support blocking piece (75) connected with the lumbar support positioning protrusion (71) to block the lumbar support frame (3) from being separated.

9. A new multi-functional chair back as claimed in claim 1, wherein: The position adjusting assembly (6) comprises a slide rail (61) vertically arranged on the front side of the back support frame (1), the slide rail (61) is provided with a sliding block (62) capable of slidingly adjusting the position of the lumbar support frame (3) up and down on the slide rail (61), and the lumbar support connecting frame (4) is connected with the sliding block (62).

10. A novel multi-functional chair back as claimed in claim 9, wherein: The front side of the sliding block is provided with a sliding block extension (63) extending outward, the top surface of the sliding block extension (63) is provided with a sliding block groove (64), and the rear side of the lumbar support connecting frame (4) is provided with a connecting frame sliding part (65) inserted into the sliding block groove (64) to adjust the front and rear positions of the lumbar support frame (3).

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