Electric adjusting lock catch mechanism for back row seat backrest

Abstract

The utility model relates to an electric adjusting lock catch mechanism for a back row seat backrest, in particular to an electric adjusting lock catch mechanism for adjusting the angle of the back row seat backrest. The electric adjusting lock catch mechanism comprises a base, a lead screw rotationally connected to the base in the horizontal direction, a driving motor installed on one side of the base and driving the lead screw to rotate, a lead screw nut arranged on the lead screw in a sleeving mode, a lead screw sliding block fixedly connected to the lead screw nut and an electric adjusting lock catch fixedly connected to the lead screw sliding block. A guide mechanism used for guiding the electric adjusting lock catch is arranged between the lead screw sliding block and the base and comprises a sliding block guide block fixedly connected with the lead screw sliding block and a guide groove formed in the base and parallel to the lead screw, and the sliding block guide block is connected into the guide groove in a sliding mode. The electric adjusting lock catch has the advantages that the sliding block guiding block used for guiding is additionally arranged on the lead screw sliding block, so that the electric adjusting lock catch runs more stably, and after the sliding block guiding block makes contact with the base, the running stability of the electric adjusting lock catch is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, in particular to an electric adjustment locking mechanism for a rear seat backrest. Background Art

[0002] With the continuous progress of technology, people's requirements for vehicle seats are getting higher and higher. Currently, the rear seat backrests of high-end vehicles are gradually adding electric adjustment functions. However, there is a problem of unstable adjustment during the adjustment of the current rear seat backrests. For example, Chinese Patent CN 220720872 U discloses a utility model patent for an "electric adjustment mechanism for a rear backrest", but there are the following problems: 1. The motor used needs to have a slight self-rotation angle, and the structure is complex; 2. It is difficult for the arc-shaped guide groove to perfectly fit the arc of the backrest movement, and the manufacturing and installation accuracy requirements are high. Summary of the Utility Model

[0003] In view of the above problems, the purpose of the present utility model is to provide an electric adjustment locking mechanism for a rear seat backrest, which is used to optimize the running stability and noise during the electric adjustment of the rear seat backrest, so as to overcome the above-mentioned deficiencies of the prior art.

[0004] An electric adjustment locking mechanism for a rear seat backrest provided by the present utility model, which is an electric adjustment locking mechanism for adjusting the angle of the rear seat backrest. The improvement is that the electric adjustment locking mechanism includes: a base, a lead screw rotatably connected to the base in the horizontal direction, a driving motor installed on one side of the base and driving the lead screw to rotate, a lead screw nut sleeved on the lead screw, a lead screw slider fixedly connected to the lead screw nut, and an electric adjustment lock fixedly connected to the lead screw slider. A guiding mechanism for guiding the electric adjustment lock is arranged between the lead screw slider and the base. The guiding mechanism includes: a slider guiding block fixedly connected to the lead screw slider, and a guiding groove opened on the base and arranged parallel to the lead screw. The slider guiding block is slidably connected in the guiding groove.

[0005] Preferably, the slider guiding block and the lead screw slider are integrally formed, and the lead screw slider extends downward from the slider guiding block.

[0006] Preferably, a plastic guide groove is embedded in the guiding groove, and the plastic guide groove is a wear-resistant and lubricating element.

[0007] Preferably, the slider guiding block is slidably connected in the guiding groove through a sliding shaft.

[0008] Preferably, two through holes for installing the sliding shaft are opened on the slider guiding block, and the sliding shaft sequentially passes through the through holes and the guiding groove and is connected with a nut.

[0009] Preferably, a lubricating gasket is provided between the slider guide block and the guide groove of the present utility model.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. The present utility model adds a slider guide block for guiding on the screw slider, making the operation of the electric adjustment lock more stable. And after the slider guide block contacts with the base, the operation stability of the electric adjustment lock is further increased.

[0012] 2. The slider guide block of the present utility model contacts the guide groove in the form of a sliding shaft, and a plastic guide groove is inlaid on the guide groove, so that the friction between the slider guide block and the guide groove can be effectively reduced, and the service life is improved.

[0013] 3. The guiding mechanism of the present utility model also has the function of bearing loads.

[0014] 4. The structure of the slider guide block of the present utility model is easier to manufacture and has lower cost compared with the existing electric adjustment lock mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By referring to the following description in conjunction with the drawings, and with a more comprehensive understanding of the present utility model, other objects and results of the present utility model will become more obvious and easier to understand. In the drawings:

[0016] Figure 1 is a schematic diagram of the overall structure of this embodiment.

[0017] Figure 2 is an exploded view of the overall structure of this embodiment.

[0018] The reference numerals therein include: base 1, screw rod 2, driving motor 3, screw nut 4, screw slider 5, electric adjustment lock 6, slider guide block 7, guide groove 8, plastic guide groove 9, sliding shaft 10, nut 11, lubricating gasket 12, through hole 13. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Refer to Figure 1-2As shown in the figure, an electric adjustment lock mechanism for the rear seat backrest provided in this embodiment is an electric adjustment lock mechanism for adjusting the angle of the rear seat backrest. The electric adjustment lock mechanism includes: a U-shaped base 1, a lead screw 2 rotatably connected to the base 1 in the horizontal direction, a drive motor 3 installed on one side of the base 1 and driving the lead screw 2 to rotate, a lead screw nut 4 sleeved on the lead screw 2, a lead screw slider 5 fixedly connected to the lead screw nut, and an electric adjustment lock 6 fixedly connected to the lead screw slider 5. A guiding mechanism for guiding the electric adjustment lock 6 is provided between the lead screw slider 5 and the base 1. The guiding mechanism includes: a slider guiding block 7, a guiding groove 8, a plastic guiding groove 9, a sliding shaft 10, a nut 11, and a lubricating gasket 12. The lead screw slider 5 extends downward to form the slider guiding block 7, and the slider guiding block 7 is integrally formed with the lead screw slider 5. Two through holes 13 are provided on the lead screw slider 5, and sliding shafts 10 with upper top caps are installed in the two through holes 13 of the lead screw slider 5. The guiding groove 8 is provided on the base and is arranged parallel to the lead screw 2. The plastic guiding groove 9 is embedded in the guiding groove 8, and the plastic guiding groove 9 is a wear-resistant and lubricating element. The slider guiding block 7 is slidably connected to the plastic guiding groove 9 of the guiding groove 8 through two sliding shafts 10. The nut 11 is used to fix one end of the sliding shaft 10 passing through the plastic guiding groove 9. The lubricating gasket 12 is installed between the guiding groove 8 and the nut 11, and an avoidance hole for the sliding shaft 10 to pass through is provided on the lubricating gasket 12.

[0020] Working principle: The drive motor 3 drives the lead screw 2 to rotate, and drives the lead screw slider 5 and the electric adjustment lock 6 to move linearly relative to the base 1 along the lead screw 2 through the lead screw nut 4, thereby realizing the unlocking and locking actions of the electric adjustment lock 6. Among them, the sliding shaft 10 is installed on the slider guiding block 7 of the lead screw slider 5, and the guiding groove 8 is provided at the corresponding position of the base 1. Driven by the lead screw slider 5, the sliding shaft 10 moves along the guiding groove 8. A plastic guiding groove (plastic wear-resistant and lubricating element) 9 and a lubricating gasket 12 are installed between the relative sliding parts. The other side of the sliding shaft 10 is fixed by the nut 8, so that it can share the load borne by the electric adjustment lock 6.

[0021] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An electric adjustment latch mechanism for the rear seat backrest, an electric adjustment latch mechanism for adjusting the angle of the rear seat backrest, characterized in that, The electric adjustment latch mechanism includes: a base, a lead screw rotatably connected to the base in the horizontal direction, a drive motor installed on one side of the base and driving the lead screw to rotate, a lead screw nut sleeved on the lead screw, a lead screw slider fixedly connected to the lead screw nut, and an electric adjustment latch fixedly connected to the lead screw slider. A guiding mechanism for guiding the electric adjustment latch is arranged between the lead screw slider and the base. The guiding mechanism includes: a slider guiding block fixedly connected to the lead screw slider, and a guiding groove formed in the base and arranged parallel to the lead screw. The slider guiding block is slidably connected in the guiding groove.

2. The electric adjustment lock mechanism for the rear seat backrest according to claim 1, characterized in that The slider guiding block is integrally formed with the lead screw slider, and the lead screw slider extends downward from the slider guiding block.

3. The electric adjustment lock mechanism for the rear seat backrest according to claim 1, characterized in that, A plastic guiding groove is embedded in the guiding groove.

4. The electric adjustment lock mechanism for the rear seat backrest according to claim 1, characterized in that, The slider guiding block is slidably connected in the guiding groove through a sliding shaft.

5. The electric adjustment lock mechanism for the rear seat backrest according to claim 4, characterized in that, Two through holes for installing the sliding shaft are formed in the slider guiding block. The sliding shaft sequentially passes through the through holes and the guiding groove and is connected with a nut.

6. The electric adjustment lock mechanism for the rear seat backrest according to claim 1, characterized in that, A lubricating gasket is arranged between the slider guiding block and the guiding groove.

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