Hinge and sofa

Abstract

The utility model relates to the field of sofas, and discloses a hinge and a sofa, the hinge comprises a fixed plate, a movable plate, a first connecting rod, a second connecting rod and a baffle, the fixed plate is used for being fixedly connected with a cushion of the sofa, the movable plate is used for being fixedly connected with a backrest of the sofa, and the baffle is used for being fixedly connected with the first connecting rod. The two ends of the first connecting rod are hinged to the fixed plate and the movable plate respectively, the two ends of the second connecting rod are hinged to the fixed plate and the movable plate respectively, and the first connecting rod and the second connecting rod are arranged in a spaced mode, so that an open hole is defined by the first connecting rod, the second connecting rod, the movable plate and the fixed plate. One end of the baffle is hinged to the fixed plate, the other end of the baffle is hinged to the movable plate, and the baffle covers the open hole. In addition, the sofa comprises the hinge. According to the hinge, the problem that a user is clamped by the hinge in the using process can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of sofas, in particular to a hinge and a sofa. Background Art

[0002] Currently, in sofas with swingable backrests, the sofa cushion and the sofa backrest are connected by hinges. In order to prevent the hinge from pinching the user during the swinging of the backrest, a groove is usually provided in the middle of the bottom surface of the backrest for the hinge to be inserted into the groove and fixedly connected to the backrest, so as to reduce the possibility of the hinge pinching the user. However, during the installation process of the hinge and the backrest, there is still the possibility of the hinge pinching the user. At the same time, the difficulty of assembly is greater when a groove is provided in the middle of the backrest and then fixedly connected to the hinge than when it is installed on the side of the backrest. Utility Model Content

[0003] The technical problem to be solved by the utility model is to solve at least one of the above-mentioned technical problems so as to avoid the hinge from pinching the user.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A hinge comprises a fixed plate, a movable plate, a first connecting rod, a second connecting rod and a baffle, wherein the fixed plate is used to be fixedly connected to a sofa seat cushion, and the movable plate is used to be fixedly connected to a sofa backrest, the two ends of the first connecting rod are respectively hinged to the fixed plate and the movable plate, the two ends of the second connecting rod are respectively hinged to the fixed plate and the movable plate, the first connecting rod and the second connecting rod are spaced apart so that an opening is formed between the first connecting rod, the second connecting rod, the movable plate and the fixed plate, one end of the baffle is hinged to the fixed plate, and the other end of the baffle is hinged to the movable plate, and the baffle covers the opening.

[0006] As a further improvement of the above technical solution, a first axial hole is provided on the fixed plate, a second axial hole is provided on the movable plate, the two ends of the first connecting rod are respectively connected to the first axial hole and the second axial hole through a pin shaft, a third axial hole is provided on the movable plate, a fourth axial hole is provided on the movable plate, and the two ends of the second connecting rod are respectively connected to the third axial hole and the fourth axial hole through a pin shaft.

[0007] As a further improvement of the above technical solution, the line segment connecting the first axial hole to the second axial hole is a, the line segment connecting the third axial hole to the fourth axial hole is b, a and b are parallel to each other, and the lengths of a and b are equal.

[0008] As a further improvement of the above technical solution, the first connecting rod and the second connecting rod are both arranged on the rear sides of the movable plate and the fixed plate, and the hinge also includes gaskets, four of which are arranged, two of which are arranged between the first connecting rod and the movable plate, and the remaining two gaskets are arranged between the second connecting rod and the fixed plate, and a connecting hole is opened in the middle part of each gasket, and the pins at the first axial hole, the second axial hole, the third axial hole and the fourth axial hole respectively pass through the connecting holes on the gaskets in a one-to-one manner.

[0009] As a further improvement of the above technical solution, the hinge between the baffle and the movable plate is called the first connection, and the connection between the baffle and the fixed plate is called the second connection. The first connection is arranged between the second axial hole and the fourth axial hole, and the second connection is arranged between the first axial hole and the third axial hole. The baffle is arranged on the rear side of the fixed plate and the movable plate, and the baffle is arranged on the front side of the first connecting rod and the second connecting rod.

[0010] As a further improvement of the above technical solution, the hinge also includes a tension spring, a first connecting block is provided on the movable plate, an upper connecting arm extends from the upper end of the tension spring, and the upper connecting arm is buckled on the first connecting block so that the upper connecting arm and the first connecting block can rotate relative to each other, a connecting frame is provided on the fixed plate, the connecting frame is connected to the fixed plate through a rotating shaft, a lower connecting arm extends from the lower end of the tension spring, and the lower connecting arm is connected to the connecting frame.

[0011] As a further improvement of the above technical solution, the first connecting block includes a connecting shaft, which extends in the front-to-back direction. A groove surrounding the connecting shaft is provided on the circumferential surface of the connecting shaft. The upper connecting arm is arranged in a ring shape, and the ring-shaped upper connecting arm is sleeved on the groove.

[0012] As a further improvement of the above technical solution, a plurality of connection holes are provided on the connection frame, and the lower connection arm is buckled at one of the connection holes.

[0013] As a further improvement of the above technical solution, the tension spring is arranged behind the baffle.

[0014] The utility model also provides a sofa, which comprises the hinge in any of the above technical solutions.

[0015] The beneficial effects of the utility model are as follows: when in use, the seat cushion on the sofa is fixedly connected to the fixed plate, the backrest on the sofa is fixedly connected to the movable plate, a first connecting rod and a second connecting rod are arranged between the movable plate and the fixed plate, both ends of the first connecting rod and the second connecting rod are respectively hinged to the movable plate and the fixed plate, so that relative movement can occur between the movable plate and the fixed plate. When the movable plate and the fixed plate are relatively displaced, the openings between the first connecting rod, the second connecting rod, the fixed plate and the movable plate are deformed, and the user is easily clamped. The baffle covers the opening, which can prevent the user's limbs from extending into the opening, and can effectively avoid clamping the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the hinge of the utility model;

[0017] Figure 2 It is a rear view of the hinge of the utility model;

[0018] Figure 3 It is the axonometric measurement of the hinge of the utility model. Figure 1 ;

[0019] Figure 4 It is the axonometric measurement of the hinge of the utility model. Figure 2 ;

[0020] Figure 5 It is a side schematic diagram of the hinge of the utility model.

[0021] In the accompanying drawings: 1-fixed plate, 2-movable plate, 3-first connecting rod, 4-second connecting rod, 5-baffle, 6-pin shaft, 7-gasket, 8-tension spring, 9-connecting shaft, 91-groove, 10-connecting frame, 101-connecting hole, 11-rotating shaft. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the above briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of them. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0023] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0024] Reference Figures 1 to 5 A hinge comprises a fixed plate 1, a movable plate 2, a first connecting rod 3, a second connecting rod 4 and a baffle 5, wherein the fixed plate 1 is used to be fixedly connected to a seat cushion of a sofa, and the movable plate 2 is used to be fixedly connected to a backrest of the sofa, the two ends of the first connecting rod 3 are respectively hinged to the fixed plate 1 and the movable plate 2, the two ends of the second connecting rod 4 are respectively hinged to the fixed plate 1 and the movable plate 2, the first connecting rod 3 and the second connecting rod 4 are arranged at intervals so that an opening is formed between the first connecting rod 3, the second connecting rod 4, the movable plate 2 and the fixed plate 1, one end of the baffle 5 is hinged to the fixed plate 1, and the other end of the baffle 5 is hinged to the movable plate 2, and the baffle 5 covers the opening.

[0025] As can be seen from the above, when in use, the cushion on the sofa is fixedly connected to the fixed plate 1, and the backrest on the sofa is fixedly connected to the movable plate 2. The first connecting rod 3 and the second connecting rod 4 are arranged between the movable plate 2 and the fixed plate 1. Both ends of the first connecting rod 3 and the second connecting rod 4 are respectively hinged to the movable plate 2 and the fixed plate 1, so that relative movement can occur between the movable plate 2 and the fixed plate 1. When the movable plate 2 and the fixed plate 1 are relatively displaced, the opening between the first connecting rod 3, the second connecting rod 4, the fixed plate 1 and the movable plate 2 is deformed, and the user is easily clamped. The opening is covered by the baffle 5, which can prevent the user's limbs from extending into the opening, and can effectively avoid the user from being clamped. In addition, through the arrangement of this structure, the hinge in the utility model can also be installed on the side of the backrest, which is convenient for installation.

[0026] The two ends of the first connecting rod 3 are respectively hinged to the movable plate 2 and the fixed plate 1, and the two ends of the second connecting rod 4 are respectively hinged to the movable plate 2 and the fixed plate 1. To this end, in some embodiments, the fixed plate 1 is provided with a first axial hole, the movable plate 2 is provided with a second axial hole, the two ends of the first connecting rod 3 are respectively connected to the first axial hole and the second axial hole through a pin 6, the movable plate 2 is provided with a third axial hole, the movable plate 2 is provided with a fourth axial hole, and the two ends of the second connecting rod 4 are respectively connected to the third axial hole and the fourth axial hole through a pin 6. The structure is simple and convenient to set up.

[0027] The backrest on the sofa is installed on the movable plate 2. Since the seat cushion on the sofa is fixedly connected to the fixed plate 1, the backrest and the movable plate 2 move synchronously. In order to keep the inclination angle unchanged during the backward movement of the backrest, in some embodiments, the line segment between the first axis hole and the second axis hole is a, and the line segment between the third axis hole and the fourth axis hole is b, and a and b are parallel to each other, and the lengths of a and b are equal. The structure is simple and easy to set up. Through the setting of the structure, the first connecting rod 3, the second connecting rod 4, the movable plate 2 and the fixed plate 1 form a parallelogram. When the first connecting rod 3 and the second connecting rod 4 are tilted at the same time, the movable plate 2 and the fixed plate 1 still remain parallel.

[0028] In order to stabilize the connection between the first connecting rod 3, the second connecting rod 4 and the fixed plate 1, the movable plate 2, and to reserve the installation space of the baffle 5, in some embodiments, the first connecting rod 3, the second connecting rod 4 are both arranged at the rear side of the movable plate 2 and the fixed plate 1, the hinge further comprises a gasket 7, four of which are arranged, two of which are arranged between the first connecting rod 3 and the movable plate 2, and the remaining two of which are arranged between the second connecting rod 4 and the fixed plate 1, each of which is provided with a connecting hole 101 in the middle, and the pins 6 at the first shaft hole, the second shaft hole, the third shaft hole and the fourth shaft hole respectively pass through the connecting holes 101 on the gasket 7 in a one-to-one correspondence. The structure is simple and convenient to arrange. The pins 6 at the first shaft hole, the second shaft hole, the third shaft hole and the fourth shaft hole respectively pass through the connecting holes 101 on the gasket 7 in a one-to-one correspondence. The setting of the gasket 7 can reduce the noise generated during the rotation process on the one hand; on the other hand, the setting of the gasket 7 leaves a distance between the fixed plate 1, the movable plate 2 and the first connecting rod 3, the second connecting rod 4, and the baffle 5 can be set between the fixed plate 1, the movable plate 2 and the first connecting rod 3, the second connecting rod 4. Teng Ou

[0029] The baffle 5 is used to shield the openings between the first connecting rod 3, the second connecting rod 4, the fixed plate 1 and the movable plate 2. In order to enable the baffle 5 to still cover the above-mentioned openings during the relative movement of the movable plate 2 and the fixed plate 1, in some embodiments, the hinge between the baffle 5 and the movable plate 2 is called the first connection, the connection between the baffle 5 and the fixed plate 1 is called the second connection, the first connection is set between the second shaft hole and the fourth shaft hole, the second connection is set between the first shaft hole and the third shaft hole, the baffle 5 is set at the rear side of the fixed plate 1 and the movable plate 2, and the baffle 5 is set at the front side of the first connecting rod 3 and the second connecting rod 4. The structure is simple and convenient to set, and can effectively avoid interference between the baffle 5 and the first connecting rod 3 and the second connecting rod 4.

[0030] Preferably, the distance between the first connection point and the second connection point is equal to the length of a or b mentioned above.

[0031] Since the movable plate 2 is used to be connected to the backrest of the sofa, and the fixed plate 1 is used to be connected to the sofa cushion, the backrest and the cushion on the sofa can swing relative to each other. In order to meet the user's body when leaning on the cushion, it can play a buffering role and improve the user's experience. In the prior art, a torsion spring is usually installed at the rotation point of the hinge, but the installation of the torsion spring is not convenient, and it is difficult to adjust the torsion of the torsion spring. To this end, in some embodiments, the hinge also includes a tension spring 8, the movable plate 2 is provided with a first connecting block, the upper end of the tension spring 8 extends an upper connecting arm, and the upper connecting arm is buckled on the first connecting block, so that the upper connecting arm and the first connecting block can rotate relative to each other, the fixed plate is provided with a connecting frame 10, and the connecting frame 10 is connected to the fixed plate through a rotating shaft 11, and the lower end of the tension spring 8 extends a lower connecting arm, and the lower connecting arm is connected to the connecting frame 10. The structure is simple and convenient to set up. Through the setting of the structure, the upper connecting arm of the upper end of the tension spring 8 is connected to the first connecting block on the movable plate 2, and the lower connecting arm of the lower end of the tension spring 8 is connected to the connecting frame 10 on the fixed plate 1, and the installation is very convenient. The connecting frame 10 and the fixed plate 1 are connected by a rotating shaft 11. When the fixed plate 1 and the movable plate 2 move relative to each other, it can be ensured that the tension spring 8 also changes its angle accordingly, so that the tension spring 8 can be used normally.

[0032] In order to ensure a stable connection between the upper connecting arm at the upper end of the tension spring 8 and the first connecting block. In some embodiments, the first connecting block includes a connecting shaft 9, the connecting shaft 9 extends in the front-to-back direction, a groove 91 surrounding the connecting shaft 9 is provided on the circumferential surface of the connecting shaft 9, and the upper connecting arm is arranged in an annular shape, and the annular upper connecting arm is sleeved in the groove 91. The structure is simple and convenient to arrange, the upper connecting arm is sleeved in the groove 91, and the groove 91 is used to limit the upper connecting arm, which can reduce the possibility of the upper connecting arm accidentally detaching from the groove 91.

[0033] In order to facilitate the adjustment of the tension generated by the tension spring 8 and meet the various usage requirements of the user, in some embodiments, a plurality of connection holes 101 are provided on the connecting frame 10, and the lower connecting arm is buckled at one of the connection holes 101. A plurality of connection holes 101 are provided on the connecting frame 10, and the distances between different connection holes 101 and the first connecting block are different. According to Hooke's law, the tension generated by the tension spring 8 is proportional to its stretching amount. If it is desired to increase the tension generated by the tension spring 8, the lower connecting arm at the lower end of the tension spring 8 can be buckled on the connection hole 101 farthest from the first connecting block. If it is desired to reduce the tension generated by the tension spring 8, the lower connecting arm at the lower end of the tension spring 8 can be buckled on the connection hole 101 closer to the first connecting block. In this way, the tension generated by the tension spring 8 when the user leans on the backrest of the sofa can be adjusted to generate different buffering forces.

[0034] In order to make the sofa more beautiful when in use, in some embodiments, the tension spring 8 is arranged behind the baffle 5. The structure is simple and convenient to set. The baffle 5 blocks the opening surrounded by the first connecting rod 3, the second connecting rod 4, the movable plate 2 and the fixed plate 1, and the tension spring 8 is arranged behind the baffle 5. The baffle 5 can be used to block the tension spring 8, which can make the sofa more beautiful when in use, and can prevent the tension spring 8 from interfering with external objects. In addition, in order to prevent the tension spring 8 from interfering with the first connecting rod 3 and the second connecting rod 4 during use, that is, to prevent the first connecting rod 3 and the second connecting rod 4 from contacting the tension spring 8 during the swinging process, the tension spring 8 is arranged behind the first connecting rod 3 and the second connecting rod 4.

[0035] The utility model also provides a sofa, which comprises the hinge in any of the above technical solutions.

[0036] Since the above content has already provided relevant descriptions of the hinge, those skilled in the art should be able to understand it in conjunction with the drawings in the specification, so the hinge will not be further described here.

[0037] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A hinge, characterized in that: The invention comprises a fixed plate (1), a movable plate (2), a first connecting rod (3), a second connecting rod (4) and a baffle (5); the fixed plate (1) is used for being fixedly connected to a sofa seat cushion; the movable plate (2) is used for being fixedly connected to a sofa backrest; the two ends of the first connecting rod (3) are respectively hinged to the fixed plate (1) and the movable plate (2); the two ends of the second connecting rod (4) are respectively hinged to the fixed plate (1) and the movable plate (2); the first connecting rod (3) and the second connecting rod (4) are arranged at intervals so that an opening is formed between the first connecting rod (3), the second connecting rod (4), the movable plate (2) and the fixed plate (1); one end of the baffle (5) is hinged to the fixed plate (1); the other end of the baffle (5) is hinged to the movable plate (2); and the baffle (5) covers the opening.

2. The hinge according to claim 1, characterized in that: The fixed plate (1) is provided with a first axial hole, the movable plate (2) is provided with a second axial hole, the two ends of the first connecting rod (3) are respectively connected to the first axial hole and the second axial hole through a pin (6), the movable plate (2) is provided with a third axial hole, the movable plate (2) is provided with a fourth axial hole, and the two ends of the second connecting rod (4) are respectively connected to the third axial hole and the fourth axial hole through a pin (6).

3. The hinge according to claim 2, characterized in that: The line segment connecting the first axial hole to the second axial hole is a, and the line segment connecting the third axial hole to the fourth axial hole is b. A and b are parallel to each other, and the lengths of a and b are equal.

4. The hinge according to claim 2, characterized in that: The first connecting rod (3) and the second connecting rod (4) are both arranged on the rear sides of the movable plate (2) and the fixed plate (1). The hinge further comprises a gasket (7). Four gaskets (7) are arranged, two of which are arranged between the first connecting rod (3) and the movable plate (2), and the remaining two gaskets (7) are arranged between the second connecting rod (4) and the fixed plate (1). A connecting hole (101) is opened in the middle of each gasket (7), and the pins (6) at the first axial hole, the second axial hole, the third axial hole and the fourth axial hole respectively pass through the connecting holes (101) on the gasket (7) in a one-to-one correspondence.

5. The hinge according to claim 4, characterized in that: The hinged joint between the baffle plate (5) and the movable plate (2) is called the first connection, and the joint between the baffle plate (5) and the fixed plate (1) is called the second connection. The first connection is arranged between the second axial hole and the fourth axial hole, and the second connection is arranged between the first axial hole and the third axial hole. The baffle plate (5) is arranged on the rear side of the fixed plate (1) and the movable plate (2), and the baffle plate (5) is arranged on the front side of the first connecting rod (3) and the second connecting rod (4).

6. The hinge according to claim 1, characterized in that: The hinge also includes a tension spring (8), a first connecting block is provided on the movable plate (2), an upper connecting arm extends from the upper end of the tension spring (8), and the upper connecting arm is buckled on the first connecting block so that the upper connecting arm and the first connecting block can rotate relative to each other, a connecting frame (10) is provided on the fixed plate, and the connecting frame (10) is connected to the fixed plate through a rotating shaft (11), and a lower connecting arm extends from the lower end of the tension spring (8), and the lower connecting arm is connected to the connecting frame (10).

7. The hinge according to claim 6, characterized in that: The first connecting block comprises a connecting shaft (9), the connecting shaft (9) extending in the front-rear direction, a groove (91) surrounding the connecting shaft (9) being provided on the circumferential surface of the connecting shaft (9), and the upper connecting arm being arranged in an annular shape, the annular upper connecting arm being sleeved in the groove (91).

8. The hinge according to claim 6, characterized in that: The connecting frame (10) is provided with a plurality of connecting holes (101), and the lower connecting arm is buckled at one of the connecting holes (101).

9. The hinge according to claim 6, characterized in that: The tension spring (8) is arranged behind the baffle (5).

10. A sofa, characterized in that: Comprising a hinge as described in any one of claims 1-9.

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