Four-direction electric adjusting seat headrest framework
By installing vertical adjustment motor mounting plate and limit sleeve in the four-way electric adjustment seat headrest, the shaking and stagnation problems are solved, and stable four-way electric adjustment is achieved, improving riding comfort.
Patent Information
- Application Number
- CN202423131142.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The existing four-way electric adjustable seat headrests have problems with shaking and stuck, which affects the riding experience.
The vertical adjustment motor mounting plate is installed on the lower main frame, and a bent edge plate is provided on the left and right. The movable bracket slides along the bent edge plate, combining the limit sleeve and buffer washer to ensure the stability and guidance of the screw.
It enhances the up and down movement stability of the movable bracket, reduces jitter and jamming, and improves the riding experience of passengers.
Smart Images
Figure CN223187393U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile seat headrests, and particularly relates to a four-direction electrically adjustable seat headrest frame. Background Art
[0002] The four-way adjustable headrest of a car seat plays an important role in providing head support, reducing the risk of neck injuries and improving riding comfort.
[0003] There are currently two adjustment methods: four-way manual adjustment and four-way electric adjustment. The four-way manual adjustment has the following defects: both hands are required to operate the adjustment function, and the adjustment method is relatively cumbersome; and the manual adjustment mechanism can only achieve four-way step adjustment, and cannot guarantee the most comfortable headrest position for each passenger; the four-way electric adjustment has the following defects: the structure is immature, because the motor of the vertical adjustment mechanism is placed at the bottom, the motor screw extends upward, and the movable parts set on the screw have no limiting guide measures when moving up and down. Therefore, there are shaking and jamming problems when the movable parts move up and down, which can easily lead to failure of the up and down adjustment after long-term operation, seriously affecting the passenger riding experience. Utility Model Content
[0004] The utility model aims to provide a four-way electrically adjustable seat headrest frame with four-way stepless adjustment and stable and smooth adjustment, so as to solve the problem that the current four-way electric adjustment has no limiting guide measures when moving up and down, resulting in shaking and jamming when moving up and down.
[0005] To this end, the technical solution adopted by the present invention is: a four-way electrically adjustable seat headrest frame, including an "N"-shaped headrest main rod, a vertical adjustment mechanism that drives the "N"-shaped headrest main rod to move up and down, a headrest mounting assembly located on the upper part of the "N"-shaped headrest main rod, and a longitudinal adjustment mechanism that drives the headrest mounting assembly to move forward and backward. The vertical adjustment mechanism includes a lower main frame, a vertical adjustment screw motor installed on the lower main frame, and a movable bracket installed on the screw of the vertical adjustment screw motor. Limit sleeves are welded on the left and right ends of the lower main frame, and the left and right ends of the "N"-shaped headrest main rod pass through corresponding limit sleeves and are fixed to the movable bracket. The lower main frame is centrally bolted with a vertical adjustment motor mounting plate, and the vertical adjustment motor mounting plate is provided with bent side plates on the left and right, and the movable bracket is provided with sliding grooves sliding along the bent side plates on the left and right. When the screw rod of the vertical adjustment screw motor rotates to drive the movable bracket to move up and down, the "N"-shaped headrest main rod is synchronously driven to move up and down.
[0006] As a preferred embodiment of the above scheme, the longitudinal adjustment mechanism includes a longitudinal adjustment screw motor installed on the top of the "N"-shaped headrest main rod and a movable block installed on the screw extending forward of the longitudinal adjustment screw motor. The headrest mounting assembly includes a connecting bracket installed on the movable block, a horizontal "U"-shaped headrest support rod fixed on the connecting bracket at the left and right ends, and a headrest mounting main board fixed at the front end of the connecting bracket. A support rod limit mounting plate and a longitudinal adjustment motor mounting plate for the longitudinal adjustment screw motor are welded to the top of the "N"-shaped headrest main rod. Limit sleeves for the corresponding insertion of the left and right ends of the horizontal "U"-shaped headrest support rod are welded on the left and right ends of the support rod limit mounting plate. When the screw of the longitudinal adjustment screw motor rotates to drive the movable block to move longitudinally, it simultaneously drives the headrest mounting assembly to move forward and backward, and the structural design is reasonable.
[0007] It is further preferred that the limiting sleeve is made of metal and is provided with a plastic sleeve that matches the size of the "N"-shaped headrest main rod or the horizontal "U"-shaped headrest support rod end rod. The plastic sleeve can not only reduce the noise generated when the rod moves, but also better limit the rod and play a good guiding role.
[0008] It is further preferred that the top end of the vertical adjustment motor mounting plate is bent forward to form an installation platform for installing the vertical adjustment screw motor body, and the bottom end is installed with a screw limit seat for limiting the bottom end of the screw of the vertical adjustment screw motor. The vertical adjustment screw motor body can be installed in an inclined avoidance manner during installation to avoid position conflict with the lower main frame. The screw limit seat can effectively ensure the stability of the screw, and the design structure is reasonable.
[0009] Further preferably, the upper and lower ends of the screw of the vertical adjustment screw motor, as well as the bolt connection between the vertical adjustment motor mounting plate and the lower main frame are equipped with buffer washers, which can effectively avoid noise and jamming when the screw rotates.
[0010] Beneficial effects of the utility model:
[0011] (1) Compared with the four-way electric adjustment which has no limit guide measures when moving up and down, this solution adopts the method of installing the vertical adjustment motor mounting plate on the lower main frame, and the vertical adjustment motor mounting plate is provided with bent side plates on the left and right. When the movable bracket moves up and down following the rotation of the screw rod, the left and right slides simultaneously buckle the bent side plates and slide along the bent side plates, thereby effectively enhancing the stability of the movable bracket when moving up and down, reducing shaking and jamming, ensuring the smooth operation of the vertical adjustment of the headrest, and improving the passenger riding experience.
[0012] (2) When the vertical adjustment screw motor screw rotates to drive the movable bracket to move up and down, it simultaneously drives the "N" type headrest main rod to move up and down. The headrest mounting assembly is installed on the upper part of the "N" type headrest main rod. The longitudinal adjustment mechanism drives the headrest mounting assembly to move forward and backward, thereby realizing four-way electric adjustment. The structural design is reasonable.
[0013] In summary, the utility model has the advantages of enhancing the stability of the movable bracket in moving up and down, reducing shaking and blocking, improving the passenger riding experience, and having a reasonable structural design. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural diagram of the present utility model.
[0015] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective.
[0016] Figure 3 It is a partial schematic diagram of the vertical adjustment mechanism.
[0017] Figure 4 This is a schematic diagram of the parts explosion of the utility model.
[0018] Figure 5 Schematic diagram of the lower main frame structure for installing the limiting sleeve.
[0019] Figure 6 This is an exploded diagram of some parts of the vertical adjustment mechanism.
[0020] Figure 7 Adjust the headrest frame to its highest and forward position.
[0021] Figure 8 Adjust the headrest frame to its highest and rearmost position.
[0022] Figure 9 Adjust the headrest frame to its lowest and forward position.
[0023] Figure 10 Adjust the headrest frame to its lowest and rearmost position. DETAILED DESCRIPTION
[0024] The present invention will be further described below with reference to the following embodiments and accompanying drawings:
[0025] Combine Figure 1 — Figure 10 As shown, a four-way electrically adjustable seat headrest frame consists of an "N"-shaped headrest main rod 4, a vertical adjustment mechanism that drives the "N"-shaped headrest main rod 4 to move up and down, a headrest mounting assembly 7 located on the upper part of the "N"-shaped headrest main rod 4, and a longitudinal adjustment mechanism that drives the headrest mounting assembly 7 to move forward and backward.
[0026] The vertical adjustment mechanism consists of a lower main frame 1, a vertical adjustment screw motor 2 installed on the lower main frame 1, and a movable bracket 3 installed on the screw of the vertical adjustment screw motor 2.
[0027] The top of the vertical adjustment motor mounting plate 11 is bent forward to form a mounting platform 112 for mounting the main body of the vertical adjustment screw motor 2 , and the bottom is equipped with a screw limiting seat 113 for limiting the bottom end of the screw of the vertical adjustment screw motor 2 .
[0028] Buffer washers 9 are provided at the upper and lower ends of the screw of the vertical adjustment screw motor 2 and at the bolt connection between the vertical adjustment motor mounting plate 11 and the lower main frame 1 .
[0029] Limiting sleeves 8 are welded to the left and right ends of the lower main frame 1 .
[0030] A vertically adjustable motor mounting plate 11 is bolted in the center of the lower main frame 1 .
[0031] The vertical adjustment motor mounting plate 11 is provided with bent side plates 111 on the left and right sides.
[0032] The movable bracket 3 is provided with sliding grooves 31 on the left and right sides respectively for sliding along the bent side plates 111 .
[0033] The left and right ends of the “n”-shaped headrest main rod 4 pass through the corresponding limiting sleeves 8 and are fixed on the movable bracket 3.
[0034] The longitudinal adjustment mechanism is composed of a longitudinal adjustment screw motor 5 installed on the top of the "N"-shaped headrest main rod 4 and a movable block 6 installed on the screw extending forward from the longitudinal adjustment screw motor 5.
[0035] A support rod limiting mounting plate 41 and a longitudinal adjustment motor mounting plate 42 for mounting the longitudinal adjustment screw motor 5 are welded to the top of the “n”-shaped headrest main rod 4 .
[0036] The left and right ends of the support rod limiting mounting plate 41 are welded with limiting sleeves 8 for corresponding insertion of the left and right ends of the horizontal "U"-shaped headrest support rod 72.
[0037] The headrest mounting assembly 7 consists of a connecting bracket 71 mounted on the movable block 6, a horizontal "U"-shaped headrest support rod 72 with its left and right ends fixed to the connecting bracket 71, and a headrest mounting mainboard 73 fixedly mounted on the front end of the connecting bracket 71.
[0038] The limiting sleeve 8 is preferably made of metal and is provided with a plastic sleeve 81 that matches the size of the end rod of the "N"-shaped headrest main rod 4 or the horizontal "U"-shaped headrest support rod 72.
[0039] When the vertical adjustment screw motor 2 rotates to drive the movable bracket 3 to move up and down, it simultaneously drives the "n"-shaped headrest main rod 4 to move up and down, thereby adjusting the up and down position of the seat headrest frame.
[0040] When the screw of the longitudinal adjustment screw motor 5 rotates to drive the movable block 6 to move longitudinally, the headrest mounting assembly 7 is synchronously driven to move forward and backward, thereby adjusting the front and rear position of the seat headrest frame.
Claims
1. A four-way electrically adjustable seat headrest frame, comprising an "N"-shaped headrest main rod (4), a vertical adjustment mechanism for driving the "N"-shaped headrest main rod (4) to move up and down, a headrest mounting assembly (7) located above the "N"-shaped headrest main rod (4), and a longitudinal adjustment mechanism for driving the headrest mounting assembly (7) to move forward and backward, characterized in that: The vertical adjustment mechanism comprises a lower main frame (1), a vertical adjustment screw motor (2) mounted on the lower main frame (1), and a movable bracket (3) mounted on the screw of the vertical adjustment screw motor (2); the left and right ends of the lower main frame (1) are welded with limiting sleeves (8); the left and right ends of the "N"-shaped headrest main rod (4) pass through the corresponding limiting sleeves (8) and are fixed to the movable bracket (3); the lower main frame (1) is centrally bolted with a vertical adjustment motor mounting plate (11); the vertical adjustment motor mounting plate (11) is provided with bent side plates (111) on the left and right; the movable bracket (3) is correspondingly provided with sliding grooves (31) sliding along the bent side plates (111) on the left and right; when the screw of the vertical adjustment screw motor (2) rotates to drive the movable bracket (3) to move up and down, the "N"-shaped headrest main rod (4) is synchronously driven to move up and down.
2. The four-way electrically adjustable seat headrest frame according to claim 1, characterized in that: The longitudinal adjustment mechanism comprises a longitudinal adjustment screw motor (5) mounted on the top of an "N"-shaped headrest main rod (4) and a movable block (6) mounted on a screw rod extending forward of the longitudinal adjustment screw motor (5); the headrest mounting assembly (7) comprises a connecting bracket (71) mounted on the movable block (6), a horizontal "U"-shaped headrest support rod (72) with left and right ends fixed on the connecting bracket (71), and a headrest mounting main plate (73) fixed on the front end of the connecting bracket (71); a support rod limiting mounting plate (41) and a longitudinal adjustment motor mounting plate (42) for mounting the longitudinal adjustment screw motor (5) are welded to the top of the "N"-shaped headrest main rod (4); and limiting sleeves (8) for correspondingly inserting the left and right ends of the horizontal "U"-shaped headrest support rod (72) are welded to the left and right ends of the support rod limiting mounting plate (41); when the screw rod of the longitudinal adjustment screw motor (5) rotates to drive the movable block (6) to move longitudinally, the headrest mounting assembly (7) is synchronously driven to move forward and backward.
3. The four-way electrically adjustable seat headrest frame according to claim 2, characterized in that: The limiting sleeve (8) is made of metal and is provided with a plastic sleeve (81) whose size matches the end rod of the "N"-shaped headrest main rod (4) or the horizontal "U"-shaped headrest support rod (72).
4. The four-way electrically adjustable seat headrest frame according to claim 1, characterized in that: The top end of the vertical adjustment motor mounting plate (11) is bent forward to form a mounting platform (112) for mounting the main body of the vertical adjustment screw motor (2), and the bottom end is mounted with a screw limiting seat (113) for limiting the bottom end of the screw of the vertical adjustment screw motor (2).
5. The four-way electrically adjustable seat headrest frame according to claim 1, characterized in that: The upper and lower ends of the screw of the vertical adjustment screw motor (2), as well as the bolt connection between the vertical adjustment motor mounting plate (11) and the lower main frame (1) are equipped with buffer washers (9).