An electric headrest mechanism

Abstract

The application discloses an electric headrest mechanism, which comprises a supporting rod, a headrest frame body and a connecting line. The headrest frame body is installed on the upper end of the supporting rod, and the supporting rod is in a hollow pipe type structure. The connecting line is suitable for entering from the bottom end of the supporting rod, and then leading out from the top end of the supporting rod and extending into the headrest frame body. The application has the beneficial effects that the supporting rod for installing the headrest is designed in a hollow pipe type structure, so that the connecting line can be orderly arranged and passed through, and the connecting line can be hidden and protected, thereby improving the safety. On the other hand, due to the hollow design of the supporting rod, the weight of the supporting rod can be reduced under the premise of meeting the strength of the supporting rod, so that the effect of lightweight design is achieved, and the material cost is saved.

Description

Technical Field

[0001] This application relates to the field of automotive headrest technology, and in particular to an electric headrest mechanism. Background Technology

[0002] A car headrest is a driving comfort feature and a safety protection device. In the event of a rear-end collision, the human body will fall backward due to inertia. At this time, the pressure from the vehicle's acceleration or deceleration is concentrated on the vulnerable neck and head, and the headrest acts as a buffer to protect the head.

[0003] With the rapid development of the automotive industry, cars are becoming increasingly intelligent and comfortable. For example, existing car headrests have multi-directional adjustment and massage functions. However, the functionality of headrests requires proper wiring. In existing technologies, such as the patent CN222408032U, it is clear from the attached drawings that the wiring connected to the motor lacks proper arrangement and protection, making the wiring prone to damage and even posing safety hazards. Therefore, an electric headrest mechanism is proposed to solve the above-mentioned technical problems. Utility Model Content

[0004] One of the objectives of this application is to provide an electric headrest mechanism.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: an electric headrest mechanism, including a support rod, a headrest frame, and a connecting line. The headrest frame is installed on the upper end of the support rod, and the support rod is a hollow tube structure. The connecting line is adapted to enter from the bottom end of the support rod, and then lead out from the top end of the support rod and extend into the headrest frame.

[0006] Preferably, the electric headrest mechanism further includes an adjustment device one and an adjustment device two. The headrest frame includes a frame one and a frame two. The frame one is vertically slidably sleeved on the outside of the support rod, and the frame two is horizontally slidably disposed on the frame one. The adjustment device one is installed on the frame one and connected to the bracket at the top of the support rod, and the adjustment device two is installed on the frame one and cooperates with the frame two. The adjustment device one is adapted to drive the frame one and the frame two to adjust up and down along the support rod, and the adjustment device two is adapted to drive the frame two to adjust forward and backward.

[0007] Preferably, the adjustment device includes a lead screw, a screw sleeve, and a motor. The lead screw is vertically mounted on the bracket at its end, the motor is mounted on the frame and its output end is connected to the screw sleeve, and the screw sleeve cooperates with the lead screw.

[0008] Preferably, the second adjustment device includes a second lead screw, a second threaded sleeve, and a second motor. The second lead screw is horizontally mounted on the second frame through its end. The second motor is mounted on the first frame and its output end is connected to the second threaded sleeve. The second threaded sleeve cooperates with the second lead screw.

[0009] Preferably, guide columns are symmetrically installed on the side of the second frame, and symmetrical guide grooves are provided through the side of the first frame, with the guide columns and guide grooves forming a sliding fit.

[0010] Preferably, the second frame includes a connector and a pair of support plates. The support plates are symmetrically installed on the side of the connector, and the guide column is installed on the support plate and cooperates with the support plate to form a "T" shaped structure.

[0011] Preferably, the interior of the guide column has a mesh-like hollow structure.

[0012] Preferably, the guide post is provided with a plurality of protruding ribs on its exterior, and the protruding ribs abut against the guide groove.

[0013] Preferably, a groove is provided on the upper part of one side of the frame one, and the motor one is installed in the groove one; a groove is provided on the lower part of the other side of the frame one, and the motor two is installed in the groove two; and the groove one and the groove two are spaced apart.

[0014] Preferably, the middle part of the bracket rises upward to form an arch bridge structure, and the lead screw is installed at the middle position of the bracket.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] This invention designs the headrest mounting rod as a hollow tube structure, which facilitates the orderly arrangement and passage of connecting wires and allows for the concealment and protection of the connecting wires, thereby improving safety. On the other hand, due to the hollow design of the rod, its weight can be reduced while maintaining its own strength, achieving a lightweight design effect and thus saving material costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the arrangement of the connecting lines inside the support rod of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the connecting wire of this utility model after disassembly.

[0019] Figure 3 This is a side view of the structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the adjustment device of this utility model.

[0021] Figure 5 This is a schematic diagram of the second adjusting device of this utility model.

[0022] Figure 6 This is a schematic diagram showing the installation positions of the two motors of this utility model within the frame.

[0023] Figure 7 This is a schematic diagram showing the vertical distribution of the two motors after installation.

[0024] Figure 8 This is a schematic diagram of the specific structure of the frame of this utility model.

[0025] Figure 9 This is a schematic diagram of the specific structure of the guide column of this utility model.

[0026] In the diagram: 1. Support rod; 2. Headrest frame; 201. Frame one; 202. Frame two; 2021. Connector; 2022. Support plate; 3. Connecting line; 4. Adjustment device one; 401. Lead screw one; 402. Motor one; 5. Adjustment device two; 501. Lead screw two; 502. Motor two; 6. Bracket; 7. Channel one; 8. Channel two; 9. Guide column; 10. Guide groove; 11. Rib. Detailed Implementation

[0027] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0029] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] One preferred embodiment of this application, such as Figures 1 to 9As shown, an electric headrest mechanism includes a support rod 1, a headrest frame 2, and a connecting wire 3. The headrest frame 2 is mounted on the upper end of the support rod 1, and the car headrest is mounted on the headrest frame 2. The support rod 1 has a hollow tube structure, so the connecting wire 3 can enter from the bottom end of the support rod 1, and then lead out from the top end of the support rod 1 and extend into the headrest frame 2 to realize the wiring connection to the headrest.

[0031] Therefore, designing the original headrest mounting rod 1 as a hollow tube structure facilitates the orderly arrangement and passage of the connecting wires 3, and also allows for the concealment and protection of the connecting wires 3, thereby improving safety during use. On the other hand, due to the hollow design of the support rod 1, its weight can be reduced while maintaining its own strength, achieving the effect of lightweight design and thus saving material costs.

[0032] In this embodiment, as Figure 3 As shown, the electric headrest mechanism also includes adjustment device 1 4 and adjustment device 2 5. The headrest frame 2 includes frame 1 201 and frame 2 202. Frame 1 201 is vertically slidably sleeved on the outside of the support rod 1. Frame 2 202 is horizontally slidably disposed on frame 1 201. The car headrest is installed on frame 2 202. Adjustment device 1 4 is installed on frame 1 201 and connected to the bracket 6 at the top of the support rod 1. Adjustment device 2 5 is installed on frame 1 201 and cooperates with frame 2 202.

[0033] Understandably, when adjusting the position of the car headrest, adjustment device 4 can drive frame 201 and frame 202 to adjust up and down along support rod 1, i.e., adjust the vertical position of the car headrest; adjustment device 5 can drive frame 202 to adjust forward and backward, i.e., adjust the forward and backward position of the car headrest. Therefore, by setting up two adjustment devices, four-way adjustment of the car headrest can be achieved, thus greatly improving passenger comfort.

[0034] As a further description of the above embodiments: as Figure 4 As shown, the adjustment device 4 includes a lead screw 401, a screw sleeve (not shown), and a motor 402. The top end of the lead screw 401 is fixedly installed on the bracket 6, and the lead screw 401 is in a vertical state. The motor 402 is installed on the frame 201 and its output end is connected to the screw sleeve. The screw sleeve cooperates with the lead screw 401.

[0035] Understandably, when making adjustments, starting motor 402 drives screw sleeve 1 to rotate, and screw sleeve 1 will spiral up or down along the axis of lead screw 401, thereby driving the entire headrest frame 2 to move up and down for adjustment.

[0036] like Figure 5As shown, the adjustment device 25 includes a lead screw 2 501, a screw sleeve 2 (not shown) and a motor 2 502. The end of the lead screw 2 501 is fixedly installed on the frame 2 202, and the lead screw 2 501 is in a horizontal state and passes through the frame 2 201. The motor 2 502 is installed on the frame 2 201 and its output end is connected to the screw sleeve 2. The screw sleeve 2 cooperates with the lead screw 2 501.

[0037] Understandably, during adjustment, motor 2 502 drives screw sleeve 2 to rotate, and screw sleeve 2 acts on lead screw 2 501, which causes lead screw 2 501 to move forward or backward along the axis of screw sleeve 2, thereby driving frame 2 202 to move and adjust along the front and back direction of frame 1 201.

[0038] It should be noted that both of the motors mentioned above can be hollow shaft motors, meaning the lead screw can run through the entire motor, thus saving space and facilitating installation.

[0039] In this embodiment, as Figure 8 As shown, guide columns 9 are symmetrically installed on the side of frame 202, and symmetrical guide grooves 10 are provided through the side of frame 1 201. The guide columns 9 and the guide grooves 10 form a sliding fit, thereby realizing the design of frame 202 slidingly installed on frame 1 201. This method can realize the quick assembly and disassembly of the two, and can also ensure the stability of frame 202 when it is adjusted and moved back and forth.

[0040] like Figure 8 As shown, frame 202 includes a connector 2021 and a pair of support plates 2022. The support plates 2022 can be symmetrically installed on the side of the connector 2021 by bolts. The guide column 9 is installed on the support plate 2022 and cooperates with the support plate 2022 to form a "T" shaped structure. That is, when the headrest is in use, the guide column 9 mainly provides the support surface, while the support plate 2022 and the connector 2021 mainly provide the load-bearing capacity, thus forming a stable mechanical balance, which can reduce the material used in frame 202 while ensuring strength.

[0041] Furthermore, such as Figure 9 As shown, in order to make the guide post 9 lighter, the interior of the guide post 9 can adopt a mesh-type hollow structure. This design reduces weight while maintaining sufficient rigidity and strength. Of course, the overall volume of the guide post 9 must be sufficient (i.e., the size of the guide post 9 must be large enough) to make it easier to achieve the design of lightweight and sufficient strength of the guide post 9. However, this may have the following drawback: since the guide post 9 and the guide groove 10 are in contact and sliding fit, when the size of the guide post 9 is large, it means that the contact area between the guide post 9 and the guide groove 10 is large. Therefore, the friction between the two will be too large, that is, the sliding of the frame 202 will generate greater resistance.

[0042] Therefore, in order to solve the above-mentioned technical problems, such as Figure 9 As shown, multiple ribs 11 can be provided on the outside of the guide post 9. The ribs 11 are symmetrically and evenly distributed on the outside of the guide post 9. The ribs 11 abut against the guide groove 10, which can greatly reduce the contact area between the guide post 9 and the guide groove 10, thereby reducing the friction between them. It should be noted that the number of ribs 11 can be designed according to the actual situation, of course, it must ensure the stability of the guide post 9 during sliding fit.

[0043] like Figure 6 As shown in (b), a groove 7 is provided on the upper part of one side of the frame 201, and the motor 402 is installed in the groove 7. Figure 6 As shown in (a), a trough 8 is provided on the lower part of the other side of the frame 201, and the motor 502 is installed in the trough 8; and the trough 7 and the trough 8 are spaced apart.

[0044] Understandably, mounting the two motors on opposite sides of the frame 201 with a gap between them allows for a more rational installation, avoiding mutual interference. It also ensures a more even weight distribution across the entire electric headrest mechanism, improving stability during use. For example, if both motors were mounted on the same side of the frame 201, the weight and vibration of the motors during vehicle operation would cause the motor mounting side of the frame 201 to experience greater forces, thus affecting its lifespan. The dual-side mounting design allows the two motors to achieve a balancing effect. Furthermore, as... Figure 7 As shown, the two motors are installed vertically and vertically, and their installation positions are symmetrically distributed on the frame 201. This design can further ensure the balance of the frame 201 under stress and avoid structural deformation or damage caused by uneven weight distribution.

[0045] In this embodiment, as Figure 6 As shown, the middle of the bracket 6 rises upward to form an arch bridge structure, and the lead screw 401 is installed at the middle position of the bracket 6. We know that the entire headrest frame 2 relies on the lead screw 401 for lifting and lowering, so the bracket 6 is the load-bearing component of the entire headrest frame 2. If the bracket 6 adopts a horizontal structure, it is easy for the bracket 6 to bend downward under the weight of the headrest frame 2. However, in this application, the bracket 6 is designed as an arch bridge structure, which can greatly improve the bending resistance of the bracket 6, thereby improving the load-bearing capacity and stability of the entire electric headrest mechanism.

[0046] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An electric headrest mechanism, characterized in that, The device includes a support rod, a headrest frame, and a connecting cable. The headrest frame is mounted on the upper end of the support rod, which has a hollow tubular structure. The connecting cable is adapted to enter from the bottom end of the support rod, exit from the top end of the support rod, and extend into the headrest frame. The electric headrest mechanism further includes an adjustment device one and an adjustment device two. The headrest frame includes a frame one and a frame two. The frame one is vertically slidably sleeved on the outside of the support rod, and the frame two is horizontally slidably disposed on the frame one. The adjustment device one is installed on the frame one and connected to the bracket at the top of the support rod, and the adjustment device two is installed on the frame one and cooperates with the frame two. The adjustment device one is adapted to drive the frame one and the frame two to adjust up and down along the support rod, and the adjustment device two is adapted to drive the frame two to adjust forward and backward.

2. The electric headrest mechanism as described in claim 1, characterized in that: The adjustment device includes a lead screw, a screw sleeve, and a motor. The lead screw is vertically mounted on the bracket at its end. The motor is mounted on the frame and its output end is connected to the screw sleeve. The screw sleeve cooperates with the lead screw.

3. The electric headrest mechanism as described in claim 2, characterized in that: The second adjustment device includes a second lead screw, a second screw sleeve, and a second motor. The second lead screw is horizontally mounted on the second frame through its end. The second motor is mounted on the first frame and its output end is connected to the second screw sleeve. The second screw sleeve cooperates with the second lead screw.

4. The electric headrest mechanism as described in any one of claims 1-3, characterized in that: Guide columns are symmetrically installed on the side of the second frame, and symmetrical guide grooves are provided through the side of the first frame. The guide columns and the guide grooves form a sliding fit.

5. The electric headrest mechanism as described in claim 4, characterized in that: The second frame includes a connector and a pair of support plates. The support plates are symmetrically installed on the side of the connector, and the guide column is installed on the support plate and cooperates with the support plate to form a "T" shaped structure.

6. The electric headrest mechanism as described in claim 4, characterized in that: The guide column has a mesh-like hollow structure inside.

7. The electric headrest mechanism as described in claim 6, characterized in that: The guide post is provided with multiple protruding ribs on its exterior, and the protruding ribs abut against the guide groove.

8. The electric headrest mechanism as described in claim 3, characterized in that: A trough is provided on the upper part of one side of the frame, and the motor is installed in the trough; a trough is provided on the lower part of the other side of the frame, and the motor is installed in the trough; and the trough is spaced apart from the trough.

9. The electric headrest mechanism as described in claim 2, characterized in that: The bracket rises upward in the middle to form an arch bridge structure, and the lead screw is installed at the middle position of the bracket.

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