Adjusting mechanism of electric backrest

Abstract

The utility model provides an adjusting mechanism of an electric backrest, and belongs to the technical field of electric seat backrests. The problem of surface difference between existing adjacent seat backrests is solved. The adjusting mechanism of the electric backrest comprises a base, a left backrest, a right backrest, a first angle adjuster, a second angle adjuster, a concentric assembly, a left shaft sleeve, a third angle adjuster and a right shaft sleeve. According to the utility model, the concentric component, the left shaft sleeve, the right shaft sleeve, the first angle adjuster, the second angle adjuster and the third angle adjuster are matched for use, so that the eccentric movement of the left backrest and the right backrest can be ensured to be always synchronous in the overturning process, and the condition of surface difference between the left backrest and the right backrest is avoided; and the beauty of the electric backrest in the adjusting process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric seat backrest technical field relates to a kind of adjusting mechanism of electric backrest. BACKGROUND

[0002] The electric seat of current market back row of car includes base and the two-person seat backrest and one-person seat backrest of setting on base, and two-person seat backrest can be divided into two area different sub-backrest, when two sub-backrest are locked, two sub-backrest can synchronous overturn, when two sub-backrest are unlocked, two sub-backrest can be moved apart, but the angle adjuster for adjusting each seat when adjusting corresponding sub-backrest, eccentric motion can be generated, which leads to the relative motion of two sub-backrest in the radial direction when adjusting, so that the surface difference between two sub-backrest exists, resulting in the aesthetic sense of seat. SUMMARY

[0003] The utility model aims at the above-mentioned problems existing in prior art, and provides an adjusting mechanism of electric backrest capable of preventing surface difference of adjacent seat backrests.

[0004] The purpose of the utility model can be realized by the following technical scheme: an adjusting mechanism of electric backrest, comprising:

[0005] The base is movably installed with left backrest and right backrest; the base is provided with a first angle adjuster for connecting one side of the left backrest, and is further provided with a second angle adjuster for connecting the other side of the right backrest; the left backrest is provided with a concentric assembly; the concentric assembly is provided with a left shaft sleeve; the base is provided with a third angle adjuster; the third angle adjuster is provided with a right shaft sleeve; the right backrest is movably installed between the left shaft sleeve and the right shaft sleeve; the same synchronous rod is provided on the first angle adjuster, the second angle adjuster and the third angle adjuster; and the left shaft sleeve and the right shaft sleeve are coaxially arranged.

[0006] In the above-mentioned adjusting mechanism of electric backrest, one side of the left backrest is provided with a left connecting plate for connecting the first angle adjuster, the other side of the left backrest is provided with a right connecting plate for connecting the second angle adjuster, and the concentric assembly is connected with the right connecting plate.

[0007] In the above-mentioned adjusting mechanism of electric backrest, the base is provided with a left supporting plate for installing the first angle adjuster, and the base is provided with a middle supporting plate for installing the second angle adjuster.

[0008] In the above-mentioned adjusting mechanism of electric backrest, the first angle adjuster, the second angle adjuster, the synchronous rod and the third angle adjuster are coaxially arranged, and the left backrest is provided with a motor for driving the synchronous rod to rotate.

[0009] In the electric backrest adjusting mechanism, the right backrest is provided with a left connecting plate movably connected with the left shaft sleeve, and is further provided with a right connecting plate movably connected with the right shaft sleeve.

[0010] In the electric backrest adjusting mechanism, the concentric assembly comprises a connecting support connected with the right connecting plate, and the connecting support is connected with a support plate, and the support plate is installed on the left shaft sleeve.

[0011] In the electric backrest adjusting mechanism, the left shaft sleeve is provided with a partition ring and a left clamping sleeve, the support plate is installed on the left clamping sleeve, and the left connecting plate and the left clamping sleeve are located on two sides of the partition ring respectively.

[0012] In the electric backrest adjusting mechanism, the third angle adjuster is installed with a concentric disc, and the concentric disc is connected with one end of the right shaft sleeve.

[0013] In the electric backrest adjusting mechanism, the right shaft sleeve is installed with a right clamping sleeve, and the right connecting plate is installed on the right clamping sleeve.

[0014] In the electric backrest adjusting mechanism, the base is provided with a right support plate for installing the third angle adjuster.

[0015] Compared with the prior art, the electric backrest adjusting mechanism has the following beneficial effects:

[0016] In the electric backrest adjusting mechanism, through cooperation of the concentric assembly, the left shaft sleeve, the right shaft sleeve, the first angle adjuster, the second angle adjuster and the third angle adjuster, eccentric movement of the left backrest and the right backrest can be kept synchronous during turning, so that the difference between the left backrest and the right backrest is avoided, and the electric backrest is ensured to be beautiful during adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of a preferred embodiment of the utility model.

[0018] Figure 2 is an assembly view of the right connecting plate, the concentric assembly and the left shaft sleeve.

[0019] Figure 3 is a structural schematic view of the left shaft sleeve.

[0020] Figure 4 is an assembly view of the right connecting plate, the right shaft sleeve and the third angle adjuster.

[0021] Figure 5 is an assembly view of the right shaft sleeve and the third angle adjuster. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 — Figure 5 As shown, the adjustment mechanism of an electric backrest of the present invention includes a base 100, a left backrest 200, a right backrest 300, a first recliner 110, a second recliner 120, a concentric assembly 400, a left shaft sleeve 410, a third recliner 130 and a right shaft sleeve 500.

[0024] In the present invention, the first recliner 110 , the second recliner 120 , and the third recliner 130 are all of the same specification and size.

[0025] The base 100 is movably provided with a left backrest 200 and a right backrest 300; the base 100 is provided with a first angle adjuster 110 for connecting one side of the left backrest 200, and is further provided with a second angle adjuster 120 for connecting the other side of the right backrest 300; the left backrest 200 is provided with a concentric assembly 400; the concentric assembly 400 is provided with a left shaft sleeve 410; the base 100 is provided with a third angle adjuster 130; the third angle adjuster 130 is provided with a right shaft sleeve 500; the right backrest 300 is movably arranged between the left shaft sleeve 410 and the right shaft sleeve 500; the same synchronous rod 600 is arranged through the first angle adjuster 110, the second angle adjuster 120 and the third angle adjuster 130; the left shaft sleeve 410 and the right shaft sleeve 500 are coaxially arranged; the first angle adjuster 110, the second angle adjuster 120, the synchronous rod 600 and the third angle adjuster 130 are coaxially arranged; the left backrest 200 is provided with a motor 160 for driving the synchronous rod 600 to rotate; one side of the left backrest 200 is provided with a left connecting plate 210 for connecting the first angle adjuster 110; the other side of the left backrest 200 is provided with a right connecting plate 220 for connecting the second angle adjuster 120; the concentric assembly 400 is connected with the right connecting plate 220; the right backrest 300 is provided with a left connecting plate 310 movably connected with the left shaft sleeve 410; the right backrest 300 is further provided with a right connecting plate 320 movably connected with the right shaft sleeve 500; the central axis of the left shaft sleeve 410 is coaxially arranged with the rotation center of the right connecting plate 220; when the motor 160 drives the synchronous rod 600 to rotate, the synchronous rod 600 will simultaneously drive the first angle adjuster 110, the second angle adjuster 120 and the third angle adjuster 130 to move simultaneously, because the first angle adjuster 110, the second angle adjuster 120 and the third angle adjuster 130 are all engaged with the synchronous rod 600; in this process, one side of the left backrest 200 is connected with the first angle adjuster 110 through the left connecting plate 210, the other side of the right backrest 300 is connected with the second angle adjuster 120 through the right connecting plate 320, the left shaft sleeve 410 is connected with the right connecting plate 220 through the concentric assembly 400, one side of the right backrest 300 is movably arranged on the left shaft sleeve 410 through the left connecting plate 310, the other side of the right backrest 300 is movably arranged on the right shaft sleeve 500 through the right connecting plate 320, and the right shaft sleeve 500 is connected with the third angle adjuster 130; in this way, the first angle adjuster 110 and the second angle adjuster 120 will drive the left backrest 200 to make eccentric movement, at the same time, the third angle adjuster 130 will drive the right shaft sleeve 500 to make the same eccentric movement, and the right connecting plate 220 will drive the left shaft sleeve 410 to make the same eccentric movement through the concentric assembly 400; in this way, it can be ensured that the eccentric movements of the left backrest 200 and the right backrest 300 are always synchronous during the turning process, so as to avoid the existence of surface difference between the left backrest 200 and the right backrest 300, and ensure the aesthetic feeling of the electric backrest during the adjustment process.

[0026] In the utility model, the face difference refers to the misplacement of the plane where the left backrest 200 is located and the plane where the right backrest 300 is located.

[0027] The base 100 is provided with a left supporting plate 140 for mounting the first angle adjuster 110, the base 100 is provided with a middle supporting plate 150 for mounting the second angle adjuster 120, and the base 100 is provided with a right supporting plate 170 for mounting the third angle adjuster 130; when mounting, people need to mount the first angle adjuster 110 on the left supporting plate 140, mount the second angle adjuster 120 on the middle supporting plate 150, and mount the third angle adjuster 130 on the third angle adjuster 130; because the hole for mounting the first angle adjuster 110 on the left supporting plate 140, the hole for mounting the second angle adjuster 120 on the middle supporting plate 150 and the hole for mounting the third angle adjuster 130 on the right supporting plate 170 are coaxially arranged, so that the first angle adjuster 110, the second angle adjuster 120 and the third angle adjuster 130 are arranged on the same axis, that is, the first angle adjuster 110, the second angle adjuster 120 and the third angle adjuster 130 are always arranged on the axis where the synchronous rod 600 is located.

[0028] The concentric assembly 400 comprises a connecting bracket 420 connected with the right connecting plate 220, the connecting bracket 420 is connected with a bracket plate 430, the bracket plate 430 is mounted on the left shaft sleeve 410, the left shaft sleeve 410 is provided with a partition ring 411 and a left clamping sleeve 412, the bracket plate 430 is mounted on the left clamping sleeve 412, and the left connecting plate 310 and the left clamping sleeve 412 are located on the two sides of the partition ring 411; wherein, the inner wall of the left clamping sleeve 412 is attached to the left shaft sleeve 410, so that the left clamping sleeve 412 and the left shaft sleeve 410 are coaxially arranged, the left clamping sleeve 412 is connected with the bracket plate 430; in this way, when the right connecting plate 220 drives the connecting bracket 420 to make eccentric motion, the bracket plate 430 drives the left clamping sleeve 412 to make the same eccentric motion, and the left connecting plate 310 is movably mounted on the left shaft sleeve 410; in this way, the left shaft sleeve 410 drives the left connecting plate 310 to make the same eccentric motion.

[0029] Further, the left clamping sleeve 412 has a certain width, so as to ensure that the inner wall of the left clamping sleeve 412 can have sufficient contact area with the left shaft sleeve 410, thereby ensuring that the left clamping sleeve 412 and the left shaft sleeve 410 can make synchronous eccentric motion.

[0030] The third angle adjuster 130 is provided with a concentric disc 131 connected with one end of the right shaft sleeve 500, the right shaft sleeve 500 is provided with a right clamping sleeve 510, and the right connecting plate 320 is movably arranged on the right clamping sleeve 510. When the third angle adjuster 130 works, the third angle adjuster 130 drives the concentric disc 131 to make eccentric motion, because the concentric disc 131 is fixedly connected with the right shaft sleeve 500, the right shaft sleeve 500 is coaxially arranged with the left shaft sleeve 410, the eccentric motion of the concentric disc 131 by the third angle adjuster 130 is same as the eccentric motion of the right connecting plate 220 by the second angle adjuster 120, so that the eccentric motion of the right shaft sleeve 500 and the left shaft sleeve 410 can be ensured to be same, so that the left backrest 200 and the right backrest 300 can synchronously make the same eccentric motion.

[0031] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., are merely used for convenience of description and are not intended to limit the application to a particular orientation. The directional indications are relative and are used in the description of the application.

[0032] In addition, the descriptions such as "first", "second", "one", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0033] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing", etc. should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is within the protection scope required by the present application.

Claims

1. An electric backrest adjustment mechanism, characterized in that: include: A base, on which a left backrest and a right backrest are movably mounted; the base is provided with a first angle adjuster for connecting one side of the left backrest, and the base is also provided with a second angle adjuster for connecting the other side of the right backrest; the left backrest is provided with a concentric component, and the concentric component is provided with a left shaft sleeve; the base is provided with a third angle adjuster, and the third angle adjuster is provided with a right shaft sleeve; the right backrest is movably mounted between the left shaft sleeve and the right shaft sleeve; the first angle adjuster, the second angle adjuster and the third angle adjuster are provided with the same synchronization rod, and the left shaft sleeve and the right shaft sleeve are coaxially arranged.

2. The electric backrest adjustment mechanism according to claim 1, characterized in that: A left connecting plate for connecting to a first angle adjuster is provided on one side of the left backrest, a right connecting plate for connecting to a second angle adjuster is provided on the other side of the left backrest, and the concentric assembly is connected to the right connecting plate.

3. The electric backrest adjustment mechanism according to claim 2, characterized in that: The base is provided with a left support plate for mounting a first angle adjuster, and the base is provided with a middle support plate for mounting a second angle adjuster.

4. The electric backrest adjustment mechanism according to claim 3, characterized in that: The first angle adjuster, the second angle adjuster, the synchronization rod and the third angle adjuster are coaxially arranged, and a motor for driving the synchronization rod to rotate is provided on the left backrest.

5. The electric backrest adjustment mechanism according to claim 2, characterized in that: The right backrest is provided with a left connecting plate movably connected to the left shaft sleeve, and the right backrest is also provided with a right connecting plate movably connected to the right shaft sleeve.

6. The electric backrest adjustment mechanism according to claim 5, characterized in that: The concentric assembly includes a connecting bracket connected to the right connecting plate, a bracket plate is connected to the connecting bracket, and the bracket plate is installed on the left shaft sleeve.

7. The electric backrest adjustment mechanism according to claim 6, characterized in that: The left shaft sleeve is provided with a spacer ring and a left clamping sleeve, the bracket plate is installed on the left clamping sleeve, and the left connecting plate and the left clamping sleeve are respectively located on both sides of the spacer ring.

8. The electric backrest adjustment mechanism according to claim 6, characterized in that: A concentric disk is installed on the third angle adjuster, and the concentric disk is connected to one end of the right shaft sleeve.

9. The electric backrest adjustment mechanism according to claim 8, characterized in that: A right clamping sleeve is installed on the right shaft sleeve, and the right connecting plate is installed on the right clamping sleeve.

10. The electric backrest adjustment mechanism according to claim 1, characterized in that: The base is provided with a right supporting plate for mounting the third angle adjuster.

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