Adjustable vehicle-mounted back cushion device
By designing an adjustable locking device in the vehicle pillow holder, the rotation control of the headrest assembly height is achieved, which solves the problem that the existing vehicle pillow holder cannot adjust the headrest height, and improves the adaptability and experience effect.
Patent Information
- Application Number
- CN202320329158.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-02-17
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-02-17
AI Technical Summary
The existing car pillow holder cannot adjust the height of the side sleeping headrest according to the head height of different groups of people, which has low adaptability and poor experience.
An adjustable vehicle-mounted pillow holder is designed, including a main frame and a movable headrest assembly, and the rotational adjustment of the headrest assembly is achieved through a locking device. In the unlocked state, the locking device allows the headrest assembly to rotate about the axis of the main frame, and in the locked state, prevents the headrest assembly from rotating in a specific direction, thereby achieving a height rotation control.
Through the design of the locking device, the height of the headrest assembly can be rotated and controlled in a vertical plane, adapting to the head height position of different groups of people, improving adaptability and experience effect.
Smart Images
Figure CN222452027U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pillow support technology, in particular to an adjustable vehicle-mounted pillow support. Background Art
[0002] At present, there are a wide variety of car supplies on the market, among which car pillows are a type of item that consumers often buy. Among them, there is a kind of pillow on the market that is bound to the car seat through a connecting structure, and the headrest body part extends forward, so that when the user needs to sleep and rest and the head falls to one side, it can provide support for the user's head, so it is widely favored by consumers. However, the existing car pillow cannot control the rotation height of the side sleeping headrest in the vertical plane to the required position. When the driver or passenger sits on the seat to rest, the height position of the side sleeping headrest cannot be adjusted according to the head height of different people. The adaptability is low and the experience effect is not good. Therefore, it is necessary to improve the current pillow. Utility Model Content
[0003] In view of this, the present invention aims to solve the deficiencies in the prior art, and its main purpose is to provide an adjustable vehicle-mounted pillow device, which can adjust the height position of the side sleeping headrest according to the head height of different people, has high adaptability and good experience effect.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An adjustable vehicle-mounted pillow device comprises a main frame for installation on a car seat and a movable headrest assembly for supporting a human head; the rear end of the movable headrest assembly is connected to the main frame through a locking device, the front end of the movable headrest assembly is a free end for supporting a human head, and the locking device has an unlocked state and a locked state, and can be switched between the unlocked state and the locked state;
[0006] When the locking device is in the unlocked state, the movable headrest assembly can rotate around the axis of the main frame; when the locking device is in the locked state, the locking device prevents the movable headrest assembly from rotating toward a first rotation direction, and the first rotation direction is the direction in which the movable headrest assembly rotates around the axis of the main frame toward the front and lower side of the main frame.
[0007] As a preferred embodiment, the movable headrest assembly includes a longitudinal rod group and a headrest body for supporting a human head, the longitudinal rod group includes a rotating rod and a telescopic rod; the rear end of the rotating rod is installed on the side end of the main frame through the locking device, the rear end of the telescopic rod can be telescopically inserted into the front end of the rotating rod, and the headrest body is arranged at the front end of the telescopic rod.
[0008] As a preferred embodiment, the longitudinal rod group also includes a rotating member, which is connected to the front end of the telescopic rod, and the headrest body is fixedly mounted on the rotating member. Under the action of external force, the rotating member can rotate from a first position to a second position toward the top of the main frame with the axis of the telescopic rod as the rotation center line, and then stop due to the limitation of the longitudinal rod group.
[0009] As a preferred solution, the rotating member is connected to the telescopic rod via a connecting member, a torsion spring is further connected between the rotating member and the telescopic rod, a limiting convex portion is provided at the front end of the telescopic rod, a limiting groove is provided on the rotating member, the limiting convex portion extends into the limiting groove and can rotate relative to the limiting groove;
[0010] The limiting groove has a first side wall and a second side wall respectively located on both sides of the limiting protrusion. When the rotating member is in the first position under the torsion force of the torsion spring, the limiting protrusion abuts against the first side wall; when the rotating member rotates to the second position under the action of an external force that overcomes the torsion force of the torsion spring, the limiting protrusion abuts against the second side wall.
[0011] As a preferred solution, the locking device includes a sleeve, a movable part, a spring, a button and a shell; the rear end of the movable headrest assembly is fixedly connected to the shell, the shell and the sleeve are connected by a fastener, the movable part can be movably arranged between the shell and the sleeve along the axial direction of the sleeve, the spring is arranged between the movable part and the sleeve, one end of the sleeve is installed on the side end of the main frame, the other end of the sleeve has a groove, and the side wall of the groove has a first guide tooth extending along the axial direction of the sleeve;
[0012] The side wall of one end of the movable member extending into the groove is provided with a second guide tooth meshing with the first guide tooth, the other end of the movable member is provided with a first locking tooth, the housing is provided with a second locking tooth meshing with the first locking tooth, one end of the button can be movably installed in the end of the housing away from the housing along the axial direction of the sleeve, and can extend into the interior of the housing to abut against the end of the movable member;
[0013] The movable member pushes the other end of the button out of the shell under the elastic force of the spring, and the first locking tooth is engaged with the second locking tooth. At this time, the locking device is in the locked state, and the movable member prevents the shell from rotating around the axis of the main frame toward the front and lower side of the main frame; the button is pressed, and the button presses the movable member to move, so that the first locking tooth disengages from the second locking tooth. At this time, the locking device is in the unlocked state, and the shell can rotate relative to the socket.
[0014] As a preferred embodiment, the first locking tooth is arranged at the end of the movable part away from the sleeve part, the first locking tooth is distributed along the circumferential direction of the movable part, the end of the shell opposite to the movable part is provided with the second locking tooth, the first locking tooth is a unidirectional helical tooth, and the inclination direction of the first locking tooth tends to be opposite to the first rotation direction.
[0015] As a preferred solution, the circumferential wall of the other end of the movable member away from the sleeve member is provided with an elastic member extending along the circumferential direction of the movable member, and the elastic member is provided with the first locking tooth;
[0016] The second locking tooth is provided on the inner circumferential wall of the shell near the movable part, the first locking tooth and the second guide tooth are both unidirectional helical teeth, and the inclination direction of the first locking tooth tends to be in the opposite direction to the first rotation direction, the inclination angle of the first locking tooth is the same as the inclination angle of the second guide tooth and is aligned in the axial direction of the movable part.
[0017] As a preferred solution, a first cover is installed at the front end of the rotating rod, and a damping member is installed at the rear end of the telescopic rod and can be movably extended into the front end of the rotating rod along the axial direction of the rotating rod. The damping member abuts against the inner wall of the telescopic rod to generate resistance, and the damping member can abut against the end of the first cover to prevent the telescopic rod from falling out of the rotating rod.
[0018] As a preferred embodiment, the main frame includes a frame body and a transverse rod, one end of the transverse rod is telescopically slidable and inserted into the side end of the frame body along the axial direction of the frame body, and the other end of the transverse rod is connected to the rear end of the movable headrest assembly through the locking device.
[0019] As a preferred solution, second covers are installed at both ends of the frame, and screws that can abut against the side ends of the second covers are connected to the inner peripheral wall of the transverse rod to prevent the transverse rod from falling out of the frame;
[0020] A damping sleeve is installed on one end of the transverse rod extending into the frame body. The damping sleeve is provided with an elastic protrusion, and the elastic protrusion abuts against the inner wall of the frame body to form resistance.
[0021] As a preferred embodiment, the frame is provided with an installation component connected to the insertion rod of the seat headrest, and the installation component includes a first locking member and a second locking member. The first locking member is slidably installed on the frame along the length direction of the frame, and the second locking member is threadedly connected to the first locking member through a screw, and a clamping groove for clamping the insertion rod of the seat headrest is formed between the second locking member and the first locking member.
[0022] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:
[0023] By installing and fixing the main frame on the car seat, the rear end of the movable headrest assembly is connected to the main frame through a locking device, and when the locking device is set to the unlocked state, the movable headrest assembly can rotate around the axis of the main frame. After the locking device is set to the locked state, the locking device prevents the movable headrest assembly from rotating in a first rotation direction, and the first rotation direction is the direction in which the movable headrest assembly rotates around the axis of the main frame toward the front and lower side of the main frame, so that the locking device can control the movable headrest assembly to rotate a certain angle and then switch to the locked state in the unlocked state, so that the height of the front end of the movable headrest assembly in the vertical plane can be rotated and controlled to a required height and then locked, so as to adapt to the head height position of different people. It has high adaptability, good experience effect and is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a three-dimensional structural schematic diagram of an adjustable vehicle-mounted pillow provided in the first preferred embodiment of the utility model;
[0025] Figure 2 yes Figure 1 An exploded schematic diagram of an adjustable vehicle-mounted headrest device is shown;
[0026] Figure 3 yes Figure 1 A schematic cross-sectional view of an adjustable vehicle-mounted headrest device is shown;
[0027] Figure 4 yes Figure 3 A magnified schematic diagram of the position A in the middle;
[0028] Figure 5 yes Figure 3 A magnified schematic diagram of position B in the middle;
[0029] Figure 6 yes Figure 3 An enlarged schematic diagram of the C position in the middle;
[0030] Figure 7 yes Figure 1 A partially enlarged exploded schematic diagram of an adjustable vehicle-mounted headrest device is shown;
[0031] Figure 8 yes Figure 1 A schematic cross-sectional view of a rotating member of an adjustable vehicle-mounted headrest device shown;
[0032] Fig. 9 yes Figure 2 An enlarged schematic diagram of the moving parts;
[0033] Fig.10 yes Figure 1 A schematic diagram of one of the states of the adjustable vehicle-mounted headrest device shown;
[0034] Fig.11 yes Figure 1 A schematic diagram of another state of the adjustable vehicle-mounted headrest shown;
[0035] Fig.12 It is an exploded schematic diagram of an adjustable vehicle-mounted headrest provided by a second preferred embodiment of the utility model;
[0036] Fig.13 It is a cross-sectional schematic diagram of an adjustable vehicle-mounted headrest provided by a second preferred embodiment of the utility model;
[0037] Fig.14 yes Fig.11 The enlarged schematic diagram at the D position in the middle;
[0038] Fig.15 yes Fig.14 An enlarged schematic diagram of the moving parts.
[0039] Description of the accompanying drawings:
[0040] 10. Main frame 11. Frame
[0041] 12. Transverse rod 13. Second set of covers
[0042] 14. Screw 15. Damping sleeve
[0043] 151, elastic protrusion 16, installation assembly
[0044] 161, first locking member 162, second locking member
[0045] 163, screw 101, clamping groove
[0046] 20. Active headrest assembly 21. Longitudinal rod assembly
[0047] 211, rotating rod 212, telescopic rod
[0048] 213. First set of covers 214. Damping element
[0049] 215, rotating part 22, headrest body
[0050] 23. Connector 24. Torsion spring
[0051] 201, limiting convex part 202, limiting groove
[0052] 2021, first side wall 2022, second side wall
[0053] 30. Locking device 31. Socket
[0054] 311, groove 312, first guide tooth
[0055] 32. movable part 321. second guide tooth
[0056] 322, first locking tooth 323, elastic member
[0057] 33. Spring 34. Button
[0058] 35. Housing 351. Second locking tooth
[0059] 36. Fastener I. First rotation direction
[0060] a. The axis of the main frame b. The axis of the telescopic rod. DETAILED DESCRIPTION
[0061] In the description of the present invention, it needs to be understood that, in order to facilitate the narration of the present invention and simplify the description, for directional words, such as terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings; in addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number or order of the indicated technical features.
[0062] Please refer to Figures 1 to 11 As shown, it shows the specific structure of the adjustable vehicle-mounted pillow device provided by the first preferred embodiment of the utility model, which includes a main frame 10 for installation on a car seat and a movable headrest assembly 20 for supporting a human head.
[0063] The rear end of the movable headrest assembly 20 is connected to the main frame 10 through a locking device 30. The front end of the movable headrest assembly 20 is a free end for supporting the human head. The locking device 30 has an unlocked state and a locked state and can be switched between the unlocked state and the locked state. Figure 1 As shown, when the locking device 30 is in the unlocked state, the active headrest assembly 20 can rotate around the axis a of the main frame 10; when the locking device 30 is in the locked state, the locking device 30 prevents the active headrest assembly 20 from rotating toward the first rotation direction I, and the first rotation direction I is the direction in which the active headrest assembly 20 rotates around the axis a of the main frame 10 toward the front and lower side of the main frame 10 (as shown in FIG. Figure 1 shown).
[0064] Specifically, see Figure 1 , Figure 3 as well as Figure 4 As shown, the main frame 10 includes a frame body 11 and a transverse rod 12; a second cover 13 is installed at both ends of the frame body 11; one end of the transverse rod 12 is telescopically slidably inserted into the side end of the frame body 11 along the axial direction of the frame body 11, and the other end of the transverse rod 12 is connected to the rear end of the movable headrest assembly 20 through a locking device 30; a screw 14 that can abut against the side end of the second cover 13 is connected to the inner end peripheral wall of the transverse rod 12 to prevent the transverse rod 12 from escaping from the frame body 11; a damping sleeve 15 is installed on one end of the transverse rod 12 extending into the frame body 11, and the damping sleeve 15 has an elastic protrusion 151, which abuts against the inner wall of the frame body 11 to form resistance. In this embodiment, transverse rods 12 are inserted at both ends of the frame 11, and the axis of the transverse rod 12 is the same axis as the axis a of the main frame 10. The transverse rod 12 can be adjusted by telescopic adjustment to facilitate the adjustment of the distance between the two active headrest assemblies 20 to meet the driver's or passenger's requirements for the position of the active headrest assembly 20 in the left and right directions.
[0065] The frame 11 is provided with an installation assembly 16 which is connected to the insertion rod of the seat headrest. The installation assembly 16 includes a first locking member 161 and a second locking member 162. The first locking member 161 can be slidably installed on the frame 11 along the length direction of the frame 11. The second locking member 162 is threadedly connected to the first locking member 161 through a screw 163. A clamping groove 101 for clamping the insertion rod of the seat headrest is formed between the second locking member 162 and the first locking member 161. The clamping groove 101 between the second locking member 162 and the first locking member 161 is sleeved on the insertion rod of the seat headrest, and the second locking member 162 and the first locking member 161 are locked by the screw 163 to ensure that the frame 11 can be stably installed on the car seat.
[0066] See also Figures 1 to 3 and Figure 5As shown, the movable headrest assembly 20 includes a longitudinal rod group 21 and a headrest body 22 for supporting a human head. The longitudinal rod group 21 includes a rotating rod 211 and a telescopic rod 212. The rear end of the rotating rod 211 is mounted on the side end of the main frame 10 through a locking device 30. The rear end of the telescopic rod 212 can be telescopically inserted into the front end of the rotating rod 211. The headrest body 22 is arranged at the front end of the telescopic rod 212. Specifically, a first cover 213 is installed at the front end of the rotating rod 211. The rear end of the telescopic rod 212 is covered with a damping member 214 and can be movably extended into the front end of the rotating rod 211 along the axial direction of the rotating rod 211. The damping member 214 abuts against the inner wall of the telescopic rod 212 to generate resistance, and the damping member 214 can abut against the end of the first cover 213 to prevent the telescopic rod 212 from falling out of the rotating rod 211. The telescopic rod 212 is adjusted to meet the position requirements of the driver or passenger on the headrest body 22 in the front direction of the car seat.
[0067] like Figure 7 and Figure 8 As shown, the longitudinal rod group 21 further includes a rotating member 215, the rotating member 215 is connected to the front end of the telescopic rod 212, the headrest body 22 is fixedly mounted on the rotating member 215, and the rotating member 215 can rotate from the first position to the second position toward the top of the main frame 10 with the axis b of the telescopic rod 212 as the rotation center line under the action of an external force, and then stop due to the limitation of the longitudinal rod group 21. In this embodiment, specifically, the rotating member 215 and the telescopic rod 212 are connected by a connecting member 23, and a torsion spring 24 is also connected between the rotating member 215 and the telescopic rod 212, and the torsion spring 24 is sleeved on the connecting member 23, one end of the torsion spring 24 is connected to the rotating member 215, and the other end of the torsion spring 24 is connected to the telescopic rod 212. The front end of the telescopic rod 212 has a limiting protrusion 201, and the rotating member 215 has a limiting groove 202. The limiting protrusion 201 extends into the limiting groove 202 and can rotate relative to the limiting groove 202. The limiting groove 202 extends along the circumferential direction of the telescopic rod 212. The limiting groove 202 has a first side wall 2021 and a second side wall 2022 respectively located on both sides of the limiting protrusion 201. When the rotating member 215 is in the first position under the torsion of the torsion spring 24, the limiting protrusion 201 abuts against the first side wall 2021; when the rotating member 215 rotates to the second position around the axis b of the telescopic rod 212 under the external force of overcoming the torsion of the torsion spring 24, the limiting protrusion 201 abuts against the second side wall 2022. In this way, the rotating member 215 can rotate to a certain angle (i.e., the rotation angle of the rotating member 215 from the first position to the second position) and then be restricted by the telescopic rod 212, so that the headrest body 22 can be tilted after being pressed by the human head to form an inclined support for the human head, thereby improving the comfort of sleeping on the car seat.
[0068] In this embodiment, when the rotating member 215 is in the first position, the headrest body 22 is preferably in a direction extending upward and downward (eg, Figure 1 As shown in FIG. 1 , the rotation angle of the rotating member 215 from the first position to the second position is 45°. In other embodiments, when the rotating member 215 is in the first position, the headrest body 22 may also be in a non-vertical state, and the rotation angle of the rotating member 215 from the first position to the second position is set to 30°, 50°, 60°, 70° or other different angles, as long as the headrest body 22 can form an effective tilt support for the human head.
[0069] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 and Fig. 9 As shown, the locking device 30 in the first preferred embodiment of the utility model includes a sleeve 31, a movable member 32, a spring 33, a button 34 and a shell 35; the rear end of the movable headrest assembly 20 is fixedly connected to the shell 35, and the shell 35 and the sleeve 31 are connected by a fastener 36. The movable member 32 can be movably arranged between the shell 35 and the sleeve 31 along the axial direction of the sleeve 31, and a spring 33 is arranged between the movable member 32 and the sleeve 31. The sleeve 31 One end of the sleeve 31 is mounted on the side end of the main frame 10, and the other end of the sleeve 31 has a groove 311, and the side wall of the groove 311 has a first guide tooth 312 extending along the axial direction of the sleeve 31; the side wall of the end of the movable member 32 extending into the groove 311 has a second guide tooth 321 that meshes with the first guide tooth 312, and the other end of the movable member 32 away from the sleeve 31 is provided with a first locking tooth 322, and the first locking tooth 322 is distributed along the circumferential direction of the movable member 32. The first locking tooth 322 is a unidirectional helical tooth, and the inclination direction of the first locking tooth 322 tends to be opposite to the first rotation direction I. The end of the housing 35 opposite to the movable member 32 is provided with a second locking tooth 351 that can mesh with the first locking tooth 322, and the second locking tooth 351 is also a unidirectional helical tooth, and its inclination direction tends to be the same direction as the first rotation direction I.
[0070] One end of the button 34 can be movably installed in the end of the shell 35 away from the sleeve 31 along the axial direction of the sleeve 31, and can extend into the interior of the shell 35 to abut against the end of the movable member 32; the movable member 32 pushes the other end of the button 34 out of the shell 35 under the elastic force of the spring 33, and the first locking tooth 322 is engaged with the second locking tooth 351. At this time, the locking device is in a locked state.
[0071] When the housing 35 is subjected to an external force in the direction of rotation about the axis a of the main frame 10 toward the front lower side of the main frame 10, since the inclination direction of the first locking tooth 322 tends to be in the opposite direction to the first rotation direction I, that is, the inclination direction of the first locking tooth 322 tends to be in the direction of rotation toward the front upper side of the main frame 10, a one-way tooth meshing is formed between the first locking tooth 322 and the second locking tooth 351, so that the movable member does not move in its own axial direction, and the movable member 32 prevents the housing 35 from rotating about the axis a of the main frame 10 toward the front lower side of the main frame 10. When the housing 35 is subjected to an external force in the direction of rotation about the axis a of the main frame 10 toward the front upper side of the main frame 10, the second locking tooth 351 pushes against the first locking tooth 322 to overcome the elastic force of the spring and push the movable member 32 to move in its own axial direction, and the first locking tooth 322 is disengaged from the meshing between the second locking tooth 351, so that the housing 35 can rotate about the axis a of the main frame 10 toward the front upper side of the main frame 10.
[0072] Thus, when the locking device 30 is in the locked state, refer to Figure 1 and Figure 2 As shown, the housing 35 can rotate around the axis a of the main frame 10 toward the upper front side of the main frame 10, but cannot rotate around the axis a of the main frame 10 toward the lower front side of the main frame 10. When the button 34 is pressed, the button 34 presses the movable member 32 to move toward the sleeve member 31 along the axial direction of the sleeve member 31, so that the first locking tooth 322 is disengaged from the meshing with the second locking tooth 351. At this time, the locking device 30 is in an unlocked state, and the housing 35 can rotate relative to the sleeve member 31.
[0073] When in use, the frame 11 is mounted on the plug rod of the seat headrest through the mounting assembly 16. When the button 34 is pressed, the button 34 presses the movable member 32, and the movable member 32 overcomes the elastic force of the spring 33 and moves along the axial direction of the sleeve 31, so that the first locking tooth 322 and the second locking tooth 351 are separated, and the rotating rod 211 can be rotated to adjust the headrest body 22 to a suitable position in the height direction of the seat. When the button 34 is released, under the action of the restoring force of the spring 33, the movable member 32 moves along the axial direction of the sleeve 31 under the action of the elastic force of the spring 33, so that the first locking tooth 322 and the second locking tooth 351 are engaged. Under the action of the first locking tooth 322 and the second locking tooth 351 cooperating with each other, the rotating rod 211 cannot rotate toward the first rotation direction I in the vertical plane under the action of external force, but can rotate in the direction opposite to the first rotation direction I, which can not only adjust the height of the headrest body 22 to adapt to the height position of the head of different people. When not in use, the rotating rod 211 can be manually pulled up / pushed upward to rotate the rotating rod 211 to a vertical position in a direction opposite to the first rotating direction I, so that the headrest body 22 can be rotated upward and stored, so that it does not affect the driver's driving and is convenient for the driver or the passenger to leave the seat.
[0074] Embodiment 2
[0075] Please refer to Figures 12 to 15 As shown, it shows the specific structure of the adjustable vehicle-mounted pillow device of the second preferred embodiment of the utility model. The specific structure of the adjustable vehicle-mounted pillow device provided in this embodiment 2 is basically the same as the specific structure of the aforementioned embodiment 1, and the difference is that:
[0076] In the second embodiment, the side wall of one end of the movable member 32 extending into the groove 311 is provided with a second guide tooth 321 meshing with the first guide tooth 312, and the circumferential wall of the other end of the movable member 32 away from the sleeve member 31 is provided with an elastic member 323 extending along the circumferential direction of the movable member 32, and the elastic member 323 is provided with a first locking tooth 322, and the elastic member 323 is a plurality of elastic members 323 arranged evenly at circumferential intervals, and each elastic member 323 is arc-shaped, and the first locking tooth 322 is located at the tail end of the elastic member 323. The inner circumferential wall of the housing 35 close to the movable member 32 is provided with a second locking tooth 351 meshing with the first locking tooth 322, and the first locking tooth 322 and the second guide tooth 321 are both unidirectional helical teeth, and the inclination direction of the first locking tooth 322 tends to be opposite to the first rotation direction I, and the inclination angle of the first locking tooth 322 is the same as the inclination angle of the second guide tooth 321 and is aligned in the axial direction of the movable member 32.
[0077] After pressing the button 34 , the movable member 32 moves along its own axial direction toward the sleeve member 31 , the spring 33 is compressed, and the first locking tooth 322 disengages from the second locking tooth 351 and then meshes with the first guide tooth 312 , so that the housing 35 can rotate relative to the sleeve member 31 . When the button 34 is released, the movable member 32 moves away from the sleeve member 31 along its own axial direction under the restoring force of the spring 33, and the first locking tooth 322 disengages from the first guide tooth 312 and meshes with the second locking tooth 351. At this time, the locking device 30 is in a locked state. When the housing 35 is subjected to an external force in a rotation direction (opposite to the first rotation direction I) around the axis a of the main frame 10 toward the upper front side of the main frame 10, due to the elastic force of the elastic member 323, the second locking tooth 351 can push the first locking tooth 322 toward the axis close to the movable member 32, so that the first locking tooth 322 can be disengaged from the meshing with the second locking tooth 351, and the housing 35 can rotate around the axis a of the main frame 10 toward the upper front side of the main frame 10. When the housing 35 is subjected to an external force in the first rotation direction I, the housing 35 cannot rotate along the first rotation direction I, that is, the housing 35 cannot rotate around the axis a of the main frame 10 toward the lower front side of the main frame 10.
[0078] The design focus of the utility model is that by installing and fixing the main frame 10 on the car seat, the rear end of the active headrest assembly 20 is connected to the main frame 10 through the locking device 30. When the locking device 30 is set in the unlocked state, the active headrest assembly 20 can rotate around the axis a of the main frame 10. After the locking device 30 is set in the unlocked state, the locking device 30 prevents the active headrest assembly 20 from rotating toward a first rotation direction I. The first rotation direction I is the direction in which the active headrest assembly 20 rotates around the axis a of the main frame 10 toward the front and lower side of the main frame, so that the locking device 30 can control the active headrest assembly 20 to rotate a certain angle and then switch to the locked state in the unlocked state, so that the front end of the active headrest assembly 20 can be rotated in the height direction of the car seat to be controlled at a required height and then locked to adapt to the head height position of different people. It has high adaptability, good experience effect, and is very convenient to use.
[0079] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. An adjustable vehicle-mounted pillow device, comprising a main frame for mounting on a vehicle seat and a movable headrest assembly for supporting a human head; characterized in that: The rear end of the movable headrest assembly is connected to the main frame through a locking device, the front end of the movable headrest assembly is a free end for supporting the human head, and the locking device has an unlocked state and a locked state, and can be switched between the unlocked state and the locked state; When the locking device is in the unlocked state, the movable headrest assembly can rotate around the axis of the main frame; When the locking device is in the locking state, the locking device prevents the movable headrest assembly from rotating toward a first rotation direction, where the first rotation direction is a direction in which the movable headrest assembly rotates around the axis of the main frame toward the front and lower side of the main frame.
2. The adjustable vehicle-mounted pillow device according to claim 1, characterized in that: The movable headrest assembly includes a longitudinal rod group and a headrest body for supporting a human head, the longitudinal rod group includes a rotating rod and a telescopic rod; the rear end of the rotating rod is installed on the side end of the main frame through the locking device, the rear end of the telescopic rod can be telescopically inserted into the front end of the rotating rod, and the headrest body is arranged at the front end of the telescopic rod.
3. The adjustable vehicle-mounted headrest according to claim 2, characterized in that: The longitudinal rod group also includes a rotating member, which is connected to the front end of the telescopic rod. The headrest body is fixedly mounted on the rotating member. Under the action of external force, the rotating member can rotate from a first position to a second position toward the top of the main frame with the axis of the telescopic rod as the rotation center line, and then stop due to the limitation of the longitudinal rod group.
4. The adjustable vehicle-mounted headrest according to claim 3, characterized in that: The rotating member is connected to the telescopic rod via a connecting member, a torsion spring is further connected between the rotating member and the telescopic rod, a limiting convex portion is provided at the front end of the telescopic rod, a limiting groove is provided on the rotating member, the limiting convex portion extends into the limiting groove and can rotate relative to the limiting groove; The limiting groove has a first side wall and a second side wall respectively located on both sides of the limiting protrusion. When the rotating member is in the first position under the torsion force of the torsion spring, the limiting protrusion abuts against the first side wall; when the rotating member rotates to the second position under the action of an external force that overcomes the torsion force of the torsion spring, the limiting protrusion abuts against the second side wall.
5. The adjustable vehicle-mounted headrest according to any one of claims 1 to 4, characterized in that: The locking device comprises a sleeve, a movable part, a spring, a button and a shell; the rear end of the movable headrest assembly is fixedly connected to the shell, the shell and the sleeve are connected by a fastener, the movable part can be movably arranged between the shell and the sleeve along the axial direction of the sleeve, the spring is arranged between the movable part and the sleeve, one end of the sleeve is installed on the side end of the main frame, the other end of the sleeve has a groove, and the side wall of the groove has a first guide tooth extending along the axial direction of the sleeve; The side wall of one end of the movable member extending into the groove is provided with a second guide tooth meshing with the first guide tooth, the other end of the movable member is provided with a first locking tooth, the housing is provided with a second locking tooth meshing with the first locking tooth, one end of the button can be movably installed in the end of the housing away from the housing along the axial direction of the sleeve, and can extend into the interior of the housing to abut against the end of the movable member; The movable member pushes the other end of the button out of the shell under the elastic force of the spring, and the first locking tooth is engaged with the second locking tooth. At this time, the locking device is in the locked state, and the movable member prevents the shell from rotating around the axis of the main frame toward the front and lower side of the main frame; the button is pressed, and the button presses the movable member to move, so that the first locking tooth disengages from the second locking tooth. At this time, the locking device is in the unlocked state, and the shell can rotate relative to the socket.
6. The adjustable vehicle-mounted headrest device according to claim 5, characterized in that: The first locking tooth is arranged at one end of the movable part away from the sleeve part, and the first locking tooth is distributed along the circumferential direction of the movable part. The end of the shell body opposite to the movable part has the second locking tooth, and the first locking tooth is a unidirectional helical tooth, and the inclination direction of the first locking tooth tends to be opposite to the first rotation direction.
7. The adjustable vehicle-mounted headrest according to claim 5, characterized in that: The other end peripheral wall of the movable member away from the sleeve member is provided with an elastic member extending along the circumferential direction of the movable member, and the elastic member is provided with the first locking tooth; The second locking tooth is provided on the inner circumferential wall of the shell near the movable part, the first locking tooth and the second guide tooth are both unidirectional helical teeth, and the inclination direction of the first locking tooth tends to be in the opposite direction to the first rotation direction, the inclination angle of the first locking tooth is the same as the inclination angle of the second guide tooth and is aligned in the axial direction of the movable part.
8. The adjustable vehicle-mounted headrest according to claim 2, characterized in that: A first cover is installed at the front end of the rotating rod, and a damping member is installed at the rear end of the telescopic rod and can be movably extended into the front end of the rotating rod along the axial direction of the rotating rod. The damping member abuts against the inner wall of the telescopic rod to generate resistance, and the damping member can abut against the end of the first cover to prevent the telescopic rod from falling out of the rotating rod.
9. The adjustable vehicle-mounted headrest according to claim 1, characterized in that: The main frame includes a frame body and a transverse rod, one end of the transverse rod is telescopically slidably inserted into the side end of the frame body along the axial direction of the frame body, and the other end of the transverse rod is connected to the rear end of the movable headrest assembly through the locking device.
10. The adjustable vehicle-mounted headrest according to claim 9, characterized in that: The two ends of the frame are installed with second covers, and the inner end peripheral wall of the transverse rod is connected with a screw that can abut against the side end of the second cover to prevent the transverse rod from falling out of the frame; A damping sleeve is installed on one end of the transverse rod extending into the frame body. The damping sleeve is provided with an elastic protrusion, and the elastic protrusion abuts against the inner wall of the frame body to form resistance.
11. The adjustable vehicle-mounted headrest according to claim 9, characterized in that: The frame is provided with an installation component connected to the insertion rod of the seat headrest, and the installation component includes a first locking member and a second locking member. The first locking member can be slidably installed on the frame along the length direction of the frame, and the second locking member is threadedly connected to the first locking member through a screw, and a clamping groove for clamping the insertion rod of the seat headrest is formed between the second locking member and the first locking member.