Adjustable headrest bracket

Abstract

The present invention discloses an adjustable headrest bracket, which is characterized in that: it includes a backrest plate and a bracket group; the bracket group includes a positioning rod, a front rotating rod, a rear rotating rod and a linkage rod; the front rotating rod and the rear rotating rod intersect with each other, and there is a guiding groove extending along the length direction of the rear rotating rod on the rear rotating rod, and a guiding pin cooperating with the guiding groove on the front rotating rod; the lower end of the front rotating rod is pivotally connected to the front end of the positioning rod, the upper end is pivotally connected to the lower end of the linkage rod, the upper end of the linkage rod is pivotally connected to the rear side of the backrest plate, the lower end of the rear rotating rod is pivotally connected to the rear end of the positioning rod, and the upper end is pivotally connected to the front side of the backrest plate. The headrest of the present invention has an upward lifting action during the adjustment process, which can further improve the comfort of users with cervical problems when using it.

Description

Technical Field

[0001] The present invention relates to the field of sofa structures, and particularly to an adjustable headrest bracket. Background Art

[0002] In order to increase the comfort of sofas, a headrest with adjustable position is usually installed at the top of the backrest of the sofa, and a lumbar backrest with adjustable position is installed in the middle of the backrest. The position of these headrests relative to the backrest is adjustable, so that the sofa can be adjusted to a relatively comfortable state during daily use.

[0003] During actual use, the position adjustment of the headrest can only swing in a circular motion around the center of the circle, that is, the adjustment method is relatively simple and monotonous, and it cannot bring comfort to users with poor cervical vertebrae during the adjustment process. Therefore, there is room for further improvement in the existing headrest adjustment structures on the market. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an adjustable headrest bracket, in which the headrest has an upward lifting action during the adjustment process, which can further improve the comfort of users with cervical problems when using.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An adjustable headrest bracket, characterized in that: it includes a back plate and a bracket group;

[0007] The bracket group includes a positioning rod, a front rotating rod, a rear rotating rod and a linkage rod;

[0008] The front rotating rod and the rear rotating rod cross each other, and a guiding groove extending along the length direction of the rear rotating rod is provided on the rear rotating rod, and a guiding pin cooperating with the guiding groove is provided on the front rotating rod;

[0009] The lower end of the front rotating rod is pivotally connected to the front end of the positioning rod, the upper end is pivotally connected to the lower end of the linkage rod, the upper end of the linkage rod is pivotally connected to the rear side of the back plate, the lower end of the rear rotating rod is pivotally connected to the rear end of the positioning rod, and the upper end is pivotally connected to the front side of the back plate.

[0010] Preferably, a connecting rod is connected to the lower surface of the back plate, and the upper ends of the rear rotating rod and the linkage rod are respectively pivotally connected to the front and rear ends of the connecting rod.

[0011] Preferably, there are two sets of the bracket group and they are arranged in a mirror image.

[0012] Preferably, a first motor tube, a second motor tube and a push rod motor are further arranged between the two sets of bracket groups;

[0013] Both ends of the first motor tube are respectively fixed on two positioning rods, and both ends of the second motor tube are respectively fixed on two front rotating rods;

[0014] Both ends of the push rod motor are respectively pivotally connected to the first motor tube and the second motor tube.

[0015] Preferably, the positioning rod is bent and forms a first connecting piece on the inner side and a second connecting piece on the outer side.

[0016] The advantages of the present invention are as follows: Under the cooperation of the guide rod and the guide groove, during the flipping adjustment of the rear side of the backrest plate, the whole backrest plate will be lifted or lowered, achieving the effect of height adjustment, so as to improve the comfort of users with cervical discomfort when using the present invention. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the adjustable headrest bracket provided in this embodiment in the retracted state;

[0018] Figure 2 It is a schematic diagram of the adjustable headrest bracket provided in this embodiment in the opened state. Detailed Embodiment

[0019] Combined with Figures 1 to 2 The adjustable headrest bracket of the present invention will be further described.

[0020] An adjustable headrest bracket, characterized in that: it includes a backrest plate 3 and a bracket group 2. The bracket group 2 includes a positioning rod 21, a front rotating rod 23, a rear rotating rod 22 and a linkage rod 24. As Figure 1 shown, the front rotating rod 23 and the rear rotating rod 22 cross each other, and there is a guide groove 221 extending along the length direction of the rear rotating rod 22 on the rear rotating rod 22, and a guide pin cooperating with the guide groove 221 on the front rotating rod 23. The lower end of the front rotating rod 23 is pivotally connected to the front end of the positioning rod 21, the upper end is pivotally connected to the lower end of the linkage rod 24, the upper end of the linkage rod 24 is pivotally connected to the rear side of the backrest plate, the lower end of the rear rotating rod 22 is pivotally connected to the rear end of the positioning rod 21, and the upper end is pivotally connected to the front side of the backrest plate.

[0021] The upper surface of the backrest plate 3 is used for installing a headrest soft package, and a connecting rod 31 is connected to the lower surface of the backrest plate 3 by bolts. The upper ends of the rear rotating rod 22 and the linkage rod 24 are respectively pivotally connected to the front and rear ends of the connecting rod 31.

[0022] There are two sets of the bracket group 2 and they are arranged in a mirror image.

[0023] Between two sets of support groups 2, a first motor tube 41, a second motor tube 42 and a push rod motor (not shown in the drawings) are also provided; both ends of the first motor tube 41 are respectively fixed at positions near the front end of two positioning rods 21 by screwing or welding, and both ends of the second motor tube 42 are respectively fixed at positions near the upper end of two front rotating rods 23 by welding or screwing; both ends of the push rod motor are respectively pivotally connected to pivot plates 43 on the first motor tube 41 and the second motor tube 42.

[0024] During specific use, the present invention is installed at the top position of the backrest frame. That is, the backrest frame includes two mounting plates 1, and two sets of support groups 2 are respectively fixed on the inner side walls of the two mounting plates 1 through corresponding positioning rods 21. At the same time, the backrest 3 is located above the mounting plates 1. The backrest 3 has an open position and a retracted position relative to the backrest frame. In the retracted position, the backrest is parallel to the top surface of the mounting plate 1 and is supported on the top surface of the mounting plate 1; in the open position, the rear side of the backrest 3 is flipped forward to be nearly perpendicular to the top surface of the mounting frame, and the lower side of the backrest 3 in this state abuts against the positioning groove 11 at the front side of the top of the mounting plate 1 to achieve balance.

[0025] During the process from the retracted position to the open position, there is a front-stage opening process and a rear-stage opening process. During the front-stage opening process, the angle between the front rotating rod 23 and the positioning rod 21 gradually increases to 45 degrees. During this process, the upper end of the rear rotating rod 22 will swing backward and upward under the linkage of the guide rod and the guide groove 221, so as to drive the entire backrest 3 to be lifted; during the rear-stage opening process, the included angle between the front rotating rod 23 and the positioning rod 21 gradually increases from 45 degrees to about 90 degrees. During this process, the upper end of the rear rotating rod 22 will swing forward and downward, so that the entire backrest 3 will move downward; on the contrary, when moving from the open position to the retracted position, the entire backrest will first be lifted and then lowered. During the opening and retracting process of the backrest 3, the comfort of a person with cervical discomfort when leaning their head on the backrest 3 can be improved.

[0026] During the above opening process, in order to avoid interference between the front rotating rod 23, the rear rotating rod 22, the linkage rod 24 and the mounting plate 1, the positioning rod 21 is bent and forms a first connecting piece 211 on the inner side and a second connecting piece 212 on the outer side. The second connecting piece 212 on the outer side is installed on the mounting plate 1 by bolts, and the first connecting plate on the inner side is fixed to the first motor tube 41. Under this structure, the first connecting piece 211, the front rotating rod 23, the rear rotating rod 22, the linkage rod 24 and the mounting plate 1 will be isolated to avoid mutual interference.

[0027] Unless otherwise specified, in the present invention, if there are terms such as "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the orientation or positional relationship in the present invention are only for exemplary illustration and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood by combining the drawings and according to specific circumstances.

[0028] Unless otherwise clearly defined and limited, in the present invention, if there are terms such as "arranged", "connected" and "coupled", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An adjustable headrest bracket, characterized in that: It includes a backrest and a bracket group; The bracket group includes a positioning rod, a front rotating rod, a rear rotating rod and a linkage rod; The front rotating rod and the rear rotating rod intersect with each other, and there is a guiding groove extending along the length direction of the rear rotating rod on the rear rotating rod, and a guiding pin cooperating with the guiding groove on the front rotating rod; The lower end of the front rotating rod is pivotally connected to the front end of the positioning rod, the upper end is pivotally connected to the lower end of the linkage rod, the upper end of the linkage rod is pivotally connected to the rear side of the backrest, the lower end of the rear rotating rod is pivotally connected to the rear end of the positioning rod, and the upper end is pivotally connected to the front side of the backrest; A connecting rod is connected to the lower surface of the backrest, and the upper ends of the rear rotating rod and the linkage rod are respectively pivotally connected to the front and rear ends of the connecting rod; There are two sets of the bracket groups and they are arranged in a mirror image; The positioning rod is bent and forms a first connecting piece located inside and a second connecting piece located outside.

2. The adjustable headrest bracket according to claim 1, characterized in that: A first motor tube, a second motor tube and a push rod motor are also arranged between the two sets of bracket groups; Both ends of the first motor tube are respectively fixed on two positioning rods, and both ends of the second motor tube are respectively fixed on two front rotating rods; Both ends of the push rod motor are respectively pivotally connected to the first motor tube and the second motor tube.

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