Seat for a vehicle and method of use thereof

Abstract

The present application discloses a seat for a vehicle and a method of using the same. The seat includes a backrest assembly, a motion frame, a headrest assembly, a lock rod and a push block. The backrest assembly includes a backrest skeleton and a motor assembly. The motion frame is mounted on the motor assembly and is driven by the motor assembly to move in a height direction. The motion frame is provided with a slot. The headrest assembly includes a plug rod. The plug rod is configured with a locking groove and is capable of being inserted into the slot. The lock rod is mounted on the motion frame. The lock rod is adapted to be engaged in the locking groove or to move out of the locking groove. The push block is configured with a guide structure. When the backrest assembly is not folded down, the lock rod is in the locking groove and the plug rod is locked. When it is needed to fold down the backrest assembly, the motor assembly drives the motion frame to move to make the lock rod move out of the locking groove, and the plug rod is unlocked. The occupant does not need to manually unlock the plug rod of the headrest assembly, and the headrest assembly can be easily disassembled, which improves the experience of the occupant using the seat.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to seats for vehicles. This application also relates to methods of using the seat. Background Technology

[0002] The vehicle's seats consist of a seat cushion, a backrest, and a headrest mounted on the backrest. When an occupant is seated, their head is positioned close to the headrest.

[0003] In some vehicles, the seats are configured with backrests that can recline to further improve passenger comfort. However, when the backrest is rotated to recline, the headrest may interfere with other components or the rear seats. This usually requires manually unlocking the headrest from the backrest and then forcefully removing it, which is detrimental to the passenger experience. Summary of the Invention

[0004] To address the aforementioned technical problems, a first aspect of this application provides a seat for a vehicle. The seat includes a backrest assembly, a motion frame, a headrest assembly, a locking lever, and a push block. The backrest assembly includes a backrest frame and a motor assembly fixedly mounted on the backrest frame. The motion frame is mounted on the motor assembly. The motion frame is adapted to be driven by the motor assembly to move along the height direction of the backrest assembly and has a first stroke and a second stroke above the first stroke along the height direction. A slot extending along the height direction is provided on the motion frame. The headrest assembly includes a plug, the circumferential wall of which is configured with a locking groove extending along the lateral direction of the plug. The plug is adapted to be slidably inserted into the slot, and the locking groove is located within the slot. The locking lever is mounted on the motion frame and includes a locking section. The locking section is adapted to engage within the locking groove or move out of the locking groove along a first direction from the bottom to the opening of the locking groove. The push block is configured with a guide structure inclined relative to the height direction. The guide structure has a first position and a second position above the first position along the height direction. The motion frame is adapted to move within a first stroke, with the locking section of the locking lever positioned within a locking groove and in contact with a first position of the guide structure, thereby locking the insert lever and causing it to move synchronously with the motion frame. The motion frame is also adapted to move upwards within a second stroke, with the locking section of the locking lever, driven by the motion frame and guided by the guide structure, moving out of the locking groove along a first direction and contacting a second position of the guide structure, thereby locking the lever in a first state and unlocking the insert lever. The insert lever is adapted to be removed from the slot to detach the headrest assembly from the backrest assembly.

[0005] In one embodiment, the seat is mounted on the vehicle body, and either the seat or the vehicle body is provided with a detection element. The detection element is used to detect the removal and insertion of a probe into a slot.

[0006] In one embodiment, a detection element generates a trigger signal after the lever is removed from the slot. The seat is mounted on the vehicle body, and either the seat or the vehicle body is also equipped with a control unit. Based on the trigger signal, the control unit instructs the motor assembly to drive the motion frame downwards. The locking section of the locking lever, driven by the motion frame and guided by a guide structure, moves along a second direction from the opening to the bottom of the locking groove until it contacts a first position on the guide structure and is within the slot, at which point the locking lever is in a second state.

[0007] In one embodiment, after the locking bar is in the second state, the insert bar is adapted to be inserted into the slot and the locking groove is in the slot, and the locking section of the locking bar engages in the locking groove, so that the insert bar is in the locked state.

[0008] In one embodiment, a connecting tube assembly extending along the height direction is mounted on the backrest frame. A detection element is mounted on the connecting tube assembly, and a probe is slidably inserted into the connecting tube assembly.

[0009] In one embodiment, the connecting tube assembly includes a connecting tube and a sheath disposed within the connecting tube. A detection element is mounted on the sheath, and a probe is slidably inserted into the sheath.

[0010] In one embodiment, the push block is movably disposed on the motion frame. When the motion frame is in a first stroke, the push block is spaced apart from the connecting pipe assembly and adapted to move synchronously with the motion frame; and when the motion frame is in a second stroke, the push block abuts against the connecting pipe assembly and the motion frame is adapted to move relative to the push block.

[0011] In one embodiment, the motion frame is provided with a receiving slot that extends along the height direction and is adjacent to a slot. A push block is movably disposed within the receiving slot. When the motion frame is in a first stroke, the push block is adapted to move synchronously with the motion frame. When the motion frame is in a second stroke, the motion frame is adapted to move relative to the push block.

[0012] In one embodiment, the push block is provided with a limiting protrusion, and the circumferential wall of the slot is provided with a groove extending along the height direction, the limiting protrusion being slidably engaged within the groove. When the moving frame is in a first stroke, the limiting protrusion is adapted to contact the upper edge of the groove. When the moving frame is in a second stroke, the limiting protrusion is adapted to separate from the upper edge of the groove.

[0013] In one embodiment, an opening is provided on the circumferential wall of the receiving groove, the opening extending along the circumferential direction of the receiving groove and communicating with the slot, and the opening also corresponding to the guide structure. At least a portion of the locking section of the locking rod is located within the opening and is adapted to move in a first direction or in a second direction from the opening of the locking groove to the bottom of the groove.

[0014] In one embodiment, the guide structure is formed as a guide ramp. When the motion frame is in the first stroke, the locking section of the locking lever contacts the guide ramp. When the motion frame is in the second stroke, the locking section of the locking lever abuts against the guide ramp and supports the push block upward in the height direction.

[0015] In one embodiment, the locking bar further includes a mounting section that is mounted on the motion frame and resiliently connected to the locking section.

[0016] In one embodiment, the backrest assembly further includes a guard plate assembly extending in the height direction, and the motion frame is adapted to move along the guard plate assembly.

[0017] In one embodiment, the guard plate assembly includes two guard plates forming a movement gap extending in the height direction between the two guard plates. The moving frame has a mounting portion that is located within the movement gap and slides in contact with the two guard plates.

[0018] In one embodiment, the motor assembly includes a drive rod extending in the height direction into the motion gap, the drive rod being connected to a mounting portion of the motion frame and driving the motion frame to move.

[0019] In one embodiment, the headrest assembly has a first cable, and a first connector connected to the first cable is disposed within the insert. The backrest assembly has a second cable, and a second connector connected to the second cable is disposed within the slot. After the insert is inserted into the slot, the first connector and the second connector are electrically connected.

[0020] The second aspect of this application discloses a method of using a seat for a vehicle. One of the vehicle and the seat is equipped with a control unit. The seat includes a backrest assembly and further includes a motor assembly, a motion frame, a headrest assembly, and a locking lever. The motor assembly is controlled to rotate by the control unit. The motion frame is mounted on the motor assembly and driven to move by the motor assembly. The headrest assembly includes a plug adapted to be mounted on and detached from the motion frame. The locking lever is mounted on the motion frame and adapted to engage or disengage with the plug. The method of use includes the following steps: Step 1: The control unit receives an instruction to disassemble the headrest assembly; Step 2: The control unit calculates, based on the initial position of the motion frame, the first number of rotations the motor assembly needs to make when the motion frame moves to the point where the locking lever disengages from the plug; Step 3: The control unit instructs the motor assembly to rotate the first number of rotations in a first rotation direction, and the motion frame moves in the first movement direction to disengage the locking lever from the plug, such that the locking lever is in a first state and the plug is in an unlocked state; Step 4: The plug is separated from the motion frame to detach the headrest assembly from the backrest assembly.

[0021] In one embodiment, the method further includes step five: after the headrest assembly is disassembled, the control unit calculates the second number of rotations required for the motor assembly to move to the preset position along the second direction opposite to the first direction of movement, based on the position of the motion frame; step six: the control unit instructs the motor assembly to rotate the second number of rotations along the second direction opposite to the first direction of rotation, the motion frame moves to the preset position along the second direction of movement, and the locking rod is in the second state; step seven: the insertion rod is installed on the motion frame, the locking rod engages with the insertion rod to lock the insertion rod, and the headrest assembly is installed on the backrest assembly.

[0022] In one embodiment, the motion frame has a first stroke and a second stroke connected together; the motion frame is adapted to move along the first motion direction within the second stroke to bring the plug into the unlocked state.

[0023] In one embodiment, in step three, the motion frame is adapted to move along the first motion direction to the upper limit point of the second stroke away from the first stroke, so that the locking bar is in the first state and the insertion bar is in the unlocked state.

[0024] In one embodiment, in step six, the preset position is within the first stroke.

[0025] A third aspect of this application discloses a method of using a seat in a vehicle. One of the vehicle and the seat is equipped with a control unit. The seat includes a backrest assembly and further includes a motor assembly, a motion frame, and a headrest assembly. The motor assembly is controlled to rotate by the control unit. The motion frame is mounted on the motor assembly and driven to move by the motor assembly. The headrest assembly includes a headrest body, which is mounted on the motion frame. The method of use includes the following steps: Step 1: The control unit receives an instruction to adjust the height of the headrest body; Step 2: Based on the initial position of the motion frame, the control unit calculates the third number of rotations the motor assembly needs to make when the motion frame moves the headrest body to the desired height; Step 3: The control unit instructs the motor assembly to rotate the third number of rotations, and the motion frame moves the headrest body to the desired height.

[0026] In one embodiment, the motion frame has a first stroke and a second stroke connected together, and the motion frame moves within the first stroke to adjust the height of the headrest body.

[0027] The beneficial effects of this application are as follows: When the seat back assembly is not folded down, the headrest assembly's insert rod is locked by a locking rod on the movement frame. Thus, the headrest assembly is mounted on the backrest assembly, and its height is changed by the movement of the movement frame driven by the motor assembly. When it is necessary to fold down the backrest assembly, the motor assembly drives the movement frame to separate the locking rod from the insert rod, placing the insert rod in the unlocked state. This allows the occupant to easily remove the headrest assembly from the backrest assembly, preventing interference between the headrest assembly and the rear seats when the backrest assembly is folded down to form a bed. The occupant does not need to manually unlock the headrest assembly's insert rod and can easily disassemble the headrest assembly, improving the occupant's seat usage experience. Attached Figure Description

[0028] With the aid of non-limiting examples of exemplary embodiments of this application, the present application will be further described in a detailed description following with reference to several accompanying drawings. The drawings are not drawn to scale.

[0029] Figure 1 A vehicle according to one embodiment of this application is schematically shown.

[0030] Figure 2 A seat according to one embodiment of this application is shown schematically.

[0031] Figure 3 A partial view of the backrest frame is schematically shown, and the inserts for the motor assembly, motion frame, and headrest assembly are also shown in the figure.

[0032] Figure 4 The diagram schematically shows the state in which the motion frame, motor assembly, guard plate assembly, connecting tube, and plug are assembled together.

[0033] Figure 5 The motion frame, push block, and locking lever are schematically shown.

[0034] Figure 6 The assembly relationship between the locking grooves on the push block, locking rod, and insert rod is schematically shown.

[0035] Figure 7 The diagram schematically shows the insertion rod, push block, and locking rod arranged on the moving frame.

[0036] Figure 8 The diagram schematically shows the motion frame at its lower limit point along the height direction of the backrest assembly during the first stroke.

[0037] Figure 9 The diagram schematically shows the motion frame at its top dead center in the height direction of the backrest assembly during the first stroke.

[0038] Figure 10The diagram schematically illustrates the relationship between the locking lever and the push block when the motion frame is in its first stroke.

[0039] Figure 11 The diagram schematically illustrates the relationship between the locking grooves of the locking lever and the insert lever when the moving frame is in its first stroke.

[0040] Figure 12 The diagram schematically shows the motion frame at its top dead center in the height direction of the backrest assembly during the second stroke.

[0041] Figure 13 The diagram schematically illustrates the relationship between the locking lever and the push block when the motion frame is in its second stroke.

[0042] Figure 14 The diagram schematically illustrates the relationship between the locking lever and the locking groove when the moving frame is in its second stroke.

[0043] Figure 15 The diagram schematically shows that the insert has a first connector and the slot has a second connector.

[0044] Figure 16 The instructions for using the seat are illustrated.

[0045] List of reference numerals in the attached figures. 1: Vehicle; 11: Front seats; 12: Rear seats; 111: Seat cushion; 112: Backrest assembly; 113: Headrest assembly; 201: Backrest frame; 202: Locking rod; 203: Mounting section; 204: Locking section; 205: Connecting pipe; 206: Sheath; 207: Detection element; 208: Connecting pipe assembly; 211: Motor assembly; 212: Motor; 213: Drive rod; 214: Guard plate assembly; 221: Motion frame; 222: Extension arm; 223: Mounting part; 224: Slot; 225: Receiving slot; 226: Slide; 226a: Upper edge of slide; 228: Opening; 229: Second connector; 231: Push block; 232: Guide slope; 233: Limiting protrusion; 234: First position of guide slope; 235: Second position of guide slope; 310: Headrest body; 311: Insert rod; 312: Locking groove; 313: First connector; L1: First travel; L2: Second travel; Z: Height direction of the backrest assembly; F1: First direction; F2: Second direction Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] Figure 1 A vehicle 1 according to one embodiment of this application is schematically shown. Figure 1 As shown, seats (e.g., front seats 11 and rear seats 12) are provided in the passenger compartment of vehicle 1 for occupants to sit on; that is, the seats are mounted on the main body of the vehicle. Taking the front seat 11 as an example, as... Figure 2 As shown, the front seat 11 includes a seat cushion 111, a backrest assembly 112, and a headrest assembly 113 mounted on the backrest assembly 112.

[0048] The backrest assembly 112 is rotatable relative to the seat cushion 111 to allow the backrest assembly 112 to be reclined (e.g., to form a bed). It should be understood that, in this application, when the backrest assembly is not reclined, the height direction Z of the backrest assembly is generally parallel to the height direction of the vehicle. After the backrest assembly is reclined (as described below), the height direction Z of the backrest assembly is correspondingly generally parallel to the horizontal direction. For simplicity, this application describes the technical solution of this application with the height direction Z being generally parallel to the height direction of the vehicle as an example.

[0049] The following describes the installation of the headrest assembly 113 on the backrest assembly 112.

[0050] like Figure 3 As shown, the backrest assembly 112 includes a backrest frame 201 and a motor assembly 211 fixedly mounted on the backrest frame 201. For example, the motor assembly 211 includes a motor 212 and a drive rod 213 connected to the output shaft of the motor 212. The motor 212 is fixedly mounted on the backrest frame 201, and the drive rod 213 extends generally along the height direction Z of the backrest assembly 112. In one embodiment, the drive rod is implemented as a screw and is driven to rotate by the motor.

[0051] The backrest assembly 112 also includes a guard plate assembly 214. The guard plate assembly 214 is connected to the motor 212 and extends generally along the height direction Z. In one embodiment, the guard plate assembly 214 includes two guard plates. The two guard plates are positioned opposite each other, forming a movement gap (not shown) extending along the height direction Z between the two guard plates. In this case, a drive rod 213 extends along the height direction Z into the movement gap.

[0052] Reference Figure 3 and Figure 5 A motion frame 221 is mounted on the drive rod 213. For example, the motion frame 221 has a mounting portion 223 and two extension arms 222 extending from the mounting portion 223. The mounting portion 223 is disposed within a motion gap and slidably contacts two guard plates, and the two extension arms 222 extend from the motion gap. The mounting portion 223 also engages with the drive rod 213. Thus, when the motor 212 drives the drive rod 213 to rotate, the motion frame 221 moves along the height direction Z with the rotation of the drive rod 213. For example, the motion frame 221 has a first stroke L1 and a second stroke L2 connected along the height direction Z, and the second stroke L2 is above the first stroke L1 (e.g., ...). Figure 9 (As shown). The motion frame 221 is capable of moving within a first stroke L1, moving within a second stroke L2, and moving from the first stroke L1 to the second stroke L2, and from the second stroke L2 back to the first stroke L1. The movement of the motion frame along the height direction Z will be described below. It should be noted that the movement clearance defines the lower dead point of the first stroke L1 and the upper dead point of the second stroke L2 of the motion frame 221. The upper dead point of the first stroke L1 is the same as the lower dead point of the second stroke L2, and this is achieved by controlling the rotation of the motor through a program, which will not be elaborated here.

[0053] Reference Figure 4 and Figure 5 Each extension arm 222 has a slot 224 and a receiving slot 225 at its end opposite to the mounting portion 223. The slot 224 and the receiving slot 225 are adjacent to each other and both extend generally along the height direction Z (i.e., the axial direction of the slot and the axial direction of the receiving slot are generally parallel to the height direction).

[0054] The headrest assembly 113 includes a headrest body 310 and two inserts 311 connected to the headrest body 310. The two inserts 311 can be inserted into corresponding slots 224 to mount the headrest assembly 113 onto the backrest assembly 112. The two inserts 311 can also be removed from their respective slots 224 to detach the headrest assembly 113 from the backrest assembly 112. For simplicity, the insertion and removal of only one insert will be described below.

[0055] like Figure 6 As shown, the circumferential wall of the insertion rod 311 is provided with a locking groove 312. The locking groove 312 extends generally along the transverse direction of the insertion rod 311 (i.e., a direction generally perpendicular to the axial direction of the insertion rod), and the opening of the locking groove 312 is located on the circumferential wall of the insertion rod 311. In one embodiment, the locking groove 312 is positioned near the end of the insertion rod 311. After the insertion rod 311 is inserted into the slot 224, the locking groove 312 is located within the slot 224.

[0056] A locking bar 202 is mounted on the motion frame 221. For example... Figure 6 As shown, the locking lever 202 includes a mounting section 203 and a locking section 204 connected to the mounting section 203. The mounting section 203 is fixedly mounted on the motion frame 221, and the locking section 204 extends toward the locking groove 312. The mounting section 203 and the locking section 204 are elastically connected so that the locking section 204 can swing relative to the mounting section 203 (e.g., the locking section 204 can engage within the locking groove 312 or move out of the locking groove 312 in a first direction F1 from the bottom of the groove to the opening of the groove). In one embodiment, the locking lever is made of spring steel.

[0057] Reference Figure 5 and Figure 7 A push block 231 is installed within the receiving slot 225 of the motion frame 221. One edge of the push block 231 is inclined relative to the height direction Z, thereby forming a guide slope 232 (as one embodiment of the guide structure). The locking section 204 of the locking rod 202 can slide along the guide slope 232 (see reference). Figure 6 For example, the guide ramp 232 has a first position 234 and a second position 235 opposite to each other. The first position 234 is aligned with the locking groove 312 along the extension direction of the locking section 204, and the second position 235 is above the first position 234 along the height direction Z and in front of the first position 234 along the first direction F1. It should be understood that, depending on the actual situation, the guide structure may also be a guide rail or guide groove formed on the push block, which will not be described in detail here.

[0058] Reference Figure 8 and Figure 9 When it is necessary to raise the height of the headrest body 310 along the height direction Z, the motor 212 rotates and drives the motion frame 221 to move upward along the height direction Z within the first stroke L1. During this process, refer to Figure 10 and Figure 11 The locking section 204 of the locking rod 202 is located within the slot 224 and contacts the first position 234 of the guide ramp 232 of the push block 231. Thus, the insertion rod 311 of the headrest assembly 113 is locked and moves upward synchronously with the motion frame 221. The headrest body 310 is pushed upward by the insertion rod 311, thereby increasing the height of the headrest body 310.

[0059] When it is necessary to lower the height of the headrest body 310, the insertion rod 311 of the headrest assembly 113 remains locked. The motor 212 drives the motion frame 221 to move downward along the height direction Z within the first stroke L1. The insertion rod 311 of the headrest assembly 113 moves downward synchronously with the motion frame 221, and the headrest body 310 is pulled downward by the insertion rod 311, thereby lowering the height of the headrest body 310.

[0060] like Figure 12 As shown, when it is necessary to detach the headrest assembly 113 from the backrest assembly 112, the push block 231 remains stationary, the motor 212 rotates, and drives the motion frame 221 to move upward relative to the push block 231 along the height direction Z within the second stroke L2. It should be understood that the motion frame can also move upward from the first stroke L1 to the second stroke L2 and then continue moving upward. (Refer to...) Figure 13 and Figure 14 The locking section 204 of the locking lever 202 is driven by the motion frame 221 and guided by the guide ramp 232, gradually moving out of the locking groove 312 along the first direction F1, and also moving from the first position 234 of the guide ramp 232 toward the second position 235. When the motion frame 221 abuts against the motor 212, the motion frame 221 moves to the upper dead point of the second stroke L2 and no longer moves upward. At this time, the locking section 204 of the locking lever 202 has moved out of the locking groove 312 and is in contact with the second position 235 of the guide ramp 232. The locking lever 202 is in the first state and the insertion rod 311 is in the unlocked state. In this way, the occupant can easily remove the insertion rod 311 from the slot 224, thereby removing the headrest assembly 113 (including the headrest body 310) from the backrest assembly 112.

[0061] Therefore, according to the seat of this application, when the backrest assembly 112 is not reclined, the insertion rod 311 is in a locked state, and the headrest assembly 113 is mounted on the backrest assembly 112. The headrest body 310 is adjusted in height by the motor 212 driving the motion frame 221 to move upwards or downwards within the first stroke L1, thereby improving occupant comfort. When it is necessary to rotate the backrest assembly 112 to recline, the motor 212 drives the motion frame 221 upwards to the upper stop of the second stroke L2, thus unlocking the insertion rod 311. This allows the occupant to easily detach the headrest assembly 113 from the backrest assembly 112, preventing the headrest assembly 113 from obstructing the reclining of the backrest assembly 112. In other words, in this application, the first stroke L1 is used to adjust the height of the headrest body 310 to improve occupant comfort. The second travel L2 can be used to unlock the insert 311 of the headrest assembly 113, allowing the occupant to remove the headrest assembly 113 from the backrest assembly 112 as needed.

[0062] It should be understood that the insert can be unlocked when the backrest assembly is rotated to any angle relative to the seat cushion (e.g., after the backrest assembly is laid down), thereby allowing the headrest assembly to be detached from the backrest assembly, which will not be elaborated here.

[0063] like Figure 4As shown, a connecting tube assembly 208 extending along the height direction Z is mounted on the backrest frame 201. For example, the connecting tube assembly 208 includes a connecting tube 205, which corresponds to and is positioned above the slot 224 along the height direction Z. When installing the headrest assembly 113, the insert 311 is slidably inserted into the connecting tube 205. Since the connecting tube 205 is aligned with the slot 224 on the motion frame 221, the insert 311 can also be smoothly inserted into the slot 224. In other words, the connecting tube 205 guides the installation of the insert 311 (and the headrest assembly 113), which helps improve the occupant's experience of using the seat.

[0064] It should be noted that when the moving frame 221 moves within the first stroke L1, the push block 231 is spaced apart from the connecting pipe 205 and moves upward or downward along with the moving frame 221. When the moving frame 221 moves upward within the second stroke L2, the push block 231 abuts against the connecting pipe 205 and does not move upward.

[0065] In one embodiment, the connecting tube assembly 208 further includes a sheath 206 disposed within the connecting tube 205. The insertion rod 311 is slidably inserted into the sheath 206. The sheath 206 protects the insertion rod 311, preventing noise caused by collision and / or scraping between the insertion rod 311 and the connecting tube 205, and also preventing damage to the insertion rod 311 and / or the connecting tube 205.

[0066] In one embodiment, a detection element 207 is provided on the backrest frame 201. For example, the detection element 207 is mounted on the sleeve 206. The detection element 207 is used to detect whether the insert 311 has been removed from the slot 224 or whether it has been inserted into the slot 224. For example, the detection element is a micro switch or other suitable detection element.

[0067] After the insertion rod 311 is removed from the slot 224, the detection element 207 generates a trigger signal. The seat or the main body of the vehicle is provided with a control unit (not shown). The control unit receives the trigger signal and, based on the trigger signal, instructs the motor 212 to rotate to drive the motion frame 221 to move downward along the height direction Z.

[0068] As the motion frame 221 moves downward within the second stroke L2, the locking section 204 of the locking lever 202 remains in contact with the guide ramp 232 on the push block 231, and supports the push block 231 upward along the height direction Z, so that the push block 231 remains in contact with the connecting pipe 205 and remains stationary. In other words, the motion frame 221 moves downward relative to the push block 231 within the second stroke L2. The locking section 204 of the locking lever 202 is driven by the motion frame 221 and guided by the guide ramp 232 to gradually move into the slot 224 along a second direction F2 opposite to the first direction F1 (i.e., the second direction F2 is the direction from the opening of the locking groove 312 to the bottom of the groove), and also moves from the second position 235 of the guide ramp 232 toward the first position 234. When the motion frame 221 moves to the lower end point of the second stroke L2, the locking section 204 of the locking rod 202 contacts the first position 234 of the guide slope 232, and the locking section 204 of the locking rod 202 is in the slot 224, so that the locking rod 202 is in the second state.

[0069] It should be noted that the motion frame 221 can also move downwards from the second stroke L2 into the first stroke L1. In other words, after the motion frame moves to the lower end of the second stroke, it can be driven by the motor to continue moving downwards into the first stroke L1 while the locking lever 202 remains in the second state. This will not be elaborated further here.

[0070] After the locking lever 202 is in the second state, the insert lever 311 can be reinserted into the slot 224. The insert lever 311 pushes the locking section 204 of the locking lever 202 to move elastically in the first direction F1. When the locking section 204 of the locking lever 202 aligns with the locking groove 312 on the insert lever 311, the locking section 204 automatically resets and engages in the locking groove 312, and the insert lever 311 automatically enters the locking state. Thus, the headrest assembly 113 is stably installed on the backrest assembly 112, which facilitates the user's use of the seat.

[0071] During the movement of the motion frame 221, the guard plate assembly 214 guides and constrains the movement of the motion frame 221, which helps the motion frame 221 move smoothly.

[0072] Reference Figure 5 and Figure 7 Since the slots 224 and receiving slots 225 on the motion frame 221 are adjacent, the insert rod 311 and the push block 231 are also adjacent. This facilitates the engagement of the locking section 204 of the locking rod 202 with the locking groove 312 on the insert rod 311 and simultaneously with the guide ramp 232 on the push block 231, further facilitating the occupant's use of the seat.

[0073] like Figure 7As shown, a limiting protrusion 233 is provided on the push block 231. A sliding groove 226 extending generally along the height direction Z is provided on the circumferential wall of the receiving groove 225, and the limiting protrusion 233 is slidably engaged in the sliding groove 226.

[0074] When the motion frame 221 moves upward within the first stroke L1, the upper edge 226a of the slide groove 226 abuts against the limiting protrusion 233. The motion frame 221 pushes the locking rod 202 and the push block 231 upward, and the locking rod 202 pushes the insertion rod 311 upward. Thus, the motion frame 221, the push block 231, and the insertion rod 311 move upward synchronously. It should be noted that when the motion frame 221 moves to the upper limit of the first stroke L1, the push block 231 contacts the connecting pipe 205.

[0075] As the motion frame 221 moves downwards within the first stroke L1, the upper edge 226a of the slide 226 remains in contact with the limiting protrusion 233. This causes the slide 226 to pull the push block 231 downwards. The locking rod 202 also moves downwards with the motion frame 221 and pulls the insertion rod 311 downwards (as described above). Thus, the motion frame 221, the push block 231, and the insertion rod 311 move downwards synchronously.

[0076] As the motion frame 221 moves within the second stroke L2, the push block 231 is supported upward by the locking rod 202, causing the push block 231 to abut against the connecting pipe 205 and remain stationary. The motion frame 221 moves relative to the push block 231, and the upper edge 226a of the slide groove 226 separates from the limiting protrusion 233. When the motion frame 221 reaches the lower limit of the second stroke L2, the upper edge 226a of the slide groove 226 contacts the limiting protrusion 233.

[0077] For example Figure 7 As shown, an opening 228 is provided on the circumferential wall of the receiving groove 225. The opening 228 extends along the circumferential direction of the receiving groove 225 and corresponds to the guide slope 232. The opening 228 also communicates with the slot 224. When the moving frame 221 moves upward in the second stroke L2 to unlock the insertion rod 311, at least a portion of the locking section 204 of the locking rod 202 moves generally along the first direction F1 within the opening 228 and gradually leaves the locking groove 312 on the insertion rod 311, causing the insertion rod 311 to switch to the unlocked state. When the moving frame 221 moves downward in the second stroke L2, at least a portion of the locking section 204 of the locking rod 202 moves generally along the second direction F2 within the opening 228 into the slot 224. In other words, the opening 228 provides space for the movement of the locking section 204 of the locking rod 202 along the first direction F1 and the second direction F2, allowing the locking rod 202 to be smoothly unlocked and locked.

[0078] In one embodiment, the headrest assembly is provided with a first cable (not shown in the figure). For example, an electrical device such as an audio device is provided in the headrest body, and the first cable is connected to the electrical device. A first connector 313 (e.g., ...) is provided inside the insert 311 to connect to the first cable. Figure 15 (As shown). For example, the first connector is a socket. The backrest assembly 112 is provided with a second cable (not shown in the figure), and the slot 224 is provided with a second connector 229 for connecting to the second cable (as shown in the figure). Figure 15 (As shown). For example, the second connector is a plug. Thus, after the plug 311 is inserted into the slot 224, the first connector 313 and the second connector 229 are automatically electrically connected to supply power to the electrical device.

[0079] Figure 16 The method of using the seat is illustrated schematically. Below is a breakdown of how to use the seat. Figure 16 To describe the movement of the headrest assembly.

[0080] When the headrest assembly is installed on the backrest assembly and is in its initial position, the motion frame is also in its initial position within the first stroke L1 (including the top dead center of the first stroke L1).

[0081] When the control unit receives a command to adjust the height of the headrest body, the control unit calculates the number of third revolutions the motor needs to make when the motion frame drives the headrest body to that height, based on the initial position of the motion frame.

[0082] Next, the control unit commands the motor to rotate a third number of revolutions. The motor drives the motion frame to move within the first stroke L1, causing the headrest body to reach that height. The height adjustment of the headrest body is then complete.

[0083] When the control unit receives the instruction to disassemble the headrest assembly, the control unit calculates the number of first revolutions the motor needs to make when the motion frame moves upward to the top dead center of the second stroke, based on the initial position of the motion frame.

[0084] Next, the control unit commands the motor to rotate the first number of revolutions. The moving frame moves upward to the top dead center of the second stroke. At this point, the insertion rod is in the unlocked state, and the locking rod is in the first state.

[0085] Next, remove the insert from the motion frame to detach the headrest assembly from the backrest assembly.

[0086] After the insertion rod is detached from the moving frame, the detection element sends a trigger signal to the control unit. Based on the position of the moving frame, the control unit calculates the number of second revolutions the motor needs to make when the moving frame moves downward to the preset position.

[0087] The control unit commands the motor to rotate a second number of revolutions, causing the moving frame to move downwards to a preset position, and the locking lever to be in the second state.

[0088] Next, the insert can be reinstalled onto the motion frame as needed to install the headrest assembly onto the backrest assembly.

[0089] In the preceding text, the pusher was described as being installed within the receiving slot of the moving frame. However, the pusher can also be fixed in place. For example, the pusher can be fixedly mounted on the connecting pipe, and the moving frame can be adapted to abut and separate from the pusher; this will not be elaborated further here.

[0090] It should be noted that the present invention (e.g., inventive concepts, etc.) has been described in the specification of this patent document and / or illustrated in the figures according to exemplary embodiments; embodiments of the present invention are presented by way of example only and are not intended to limit the scope of the invention. The structure and / or arrangement of the elements of the inventive concept embodied in the present invention as described in the specification and / or illustrated in the figures are merely illustrative. Although exemplary embodiments of the present invention have been described in detail in this patent document, it will be readily understood by those skilled in the art that equivalents, modifications, variations, etc., of the subject matter of the exemplary and alternative embodiments are possible and are considered to be within the scope of the present invention; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. It should also be noted that various / other modifications, variations, substitutions, equivalents, alterations, omissions, etc., can be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concept, design, structure, apparatus, form, assembly, construction, means, function, system, process / method, steps, sequence of process / method steps, operation, operating conditions, performance, materials, composition, combination, etc.). All such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of this invention without departing from its scope; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of this invention. The scope of this invention is not intended to be limited to the subject matter (e.g., details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.) described in the specification and / or figures of this patent document. It should be understood that the claims of this patent document are to be properly interpreted as covering the full scope of the subject matter of this invention (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); the terminology used in this patent document is intended to provide a description of the subject matter of exemplary embodiments and not as a limitation on the scope of the invention.

[0091] It should also be noted that, according to exemplary embodiments, the present invention may include conventional techniques (e.g., techniques implemented and / or integrated in exemplary embodiments, modifications, variations, combinations, equivalents, etc.), or may include any other applicable techniques (now and / or in the future) with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All such techniques (e.g., techniques implemented in the manner of embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the present invention of this patent document.

Claims

1. A seat for a vehicle, characterized in that, The seat includes: A backrest assembly, including a backrest frame and a motor assembly fixedly mounted on the backrest frame; A motion frame is mounted on the motor assembly; the motion frame is adapted to be driven by the motor assembly to move along the height direction of the backrest assembly and has a first stroke and a second stroke along the height direction above the first stroke; the motion frame is provided with a slot extending along the height direction; A headrest assembly includes a insert rod; the circumferential wall of the insert rod is configured with a locking groove extending in the lateral direction of the insert rod; the insert rod is adapted to be slidably inserted into the slot and the locking groove is located within the slot; A locking lever, mounted on the moving frame and including a locking section; the locking section is adapted to engage within the locking groove or move out of the locking groove in a first direction from the bottom of the groove to the opening of the groove; and The push block is constructed with a guide structure inclined relative to the height direction; the guide structure has a first position and a second position above the first position along the height direction; the locking section of the locking rod is adapted to slidably contact the guide structure; Wherein, the motion frame is adapted to move within the first stroke, the locking section of the locking rod is located within the locking groove and contacts the first position of the guide structure, such that the insert is in a locked state and moves synchronously with the motion frame; and the motion frame is adapted to move upward within the second stroke, the locking section of the locking rod is driven by the motion frame and guided by the guide structure to move out of the locking groove along the first direction and contact the second position of the guide structure, such that the locking rod is in a first state and the insert is in an unlocked state, the insert being adapted to be removed from the slot to detach the headrest assembly from the backrest assembly.

2. The seat according to claim 1, characterized in that, The seat also includes a detection element for detecting the insertion of the insert rod from and into the slot.

3. The seat according to claim 2, characterized in that, After the insertion rod is removed from the slot, the detection element generates a trigger signal; The seat is mounted on the main body of the vehicle. One of the seat and the main body of the vehicle is also provided with a control unit. The control unit commands the motor assembly to drive the motion frame to move downward based on the trigger signal. The locking section of the locking rod is driven by the motion frame and guided by the guide structure to move along a second direction from the opening of the locking groove to the bottom of the groove until it contacts the first position of the guide structure and is in the slot. The locking rod is in a second state.

4. The seat according to claim 3, characterized in that, After the locking rod is in the second state, the insert rod is adapted to be inserted into the slot and the locking groove is in the slot, and the locking section of the locking rod engages in the locking groove, so that the insert rod is in the locked state.

5. The seat according to claim 2, characterized in that, A connecting tube assembly extending along the height direction is installed on the backrest frame, the detection element is installed on the connecting tube assembly, and the insertion rod is slidably inserted into the connecting tube assembly.

6. The seat according to claim 5, characterized in that, The connecting tube assembly includes a connecting tube and a sheath disposed within the connecting tube; the detection element is mounted on the sheath, and the insertion rod is slidably inserted into the sheath.

7. The seat according to claim 5, characterized in that, The pusher block is movably mounted on the motion frame; When the motion frame is in the first stroke, the push block is spaced apart from the connecting pipe assembly and adapted to move synchronously with the motion frame; and when the motion frame is in the second stroke, the push block abuts against the connecting pipe assembly and the motion frame is adapted to move relative to the push block.

8. The seat according to claim 1, characterized in that, The motion frame is provided with a receiving slot, which extends along the height direction and is adjacent to the slot; the push block is movably disposed within the receiving slot; When the motion frame is within the first stroke, the pusher is adapted to move synchronously with the motion frame; and when the motion frame is within the second stroke, the motion frame is adapted to move relative to the pusher.

9. The seat according to claim 8, characterized in that, The push block is provided with a limiting protrusion, and the circumferential wall of the receiving groove is provided with a sliding groove extending along the height direction; the limiting protrusion is slidably engaged in the sliding groove. When the moving frame is within the first stroke, the limiting protrusion is adapted to contact the upper edge of the slide; and when the moving frame is within the second stroke, the limiting protrusion is adapted to separate from the upper edge of the slide.

10. The seat according to claim 8, characterized in that, An opening is provided on the circumferential wall of the receiving groove, the opening extends along the circumferential direction of the receiving groove and communicates with the slot, and the opening also corresponds to the guide structure; At least a portion of the locking section of the locking rod is located within the opening and is adapted to move in the first direction or in a second direction from the opening of the locking groove to the bottom of the groove.

11. The seat according to claim 1, characterized in that, The guide structure is formed as a guide ramp; when the motion frame is within the first stroke, the locking section of the locking rod contacts the guide ramp; and when the motion frame is within the second stroke, the locking section of the locking rod abuts against the guide ramp and supports the push block upward along the height direction.

12. The seat according to claim 1, characterized in that, The locking bar also includes a mounting section, which is mounted on the moving frame and elastically connected to the locking section.

13. The seat according to claim 1, characterized in that, The backrest assembly also includes a guard plate assembly extending along the height direction; the motion frame is adapted to move along the guard plate assembly.

14. The seat according to claim 13, characterized in that, The guard plate assembly includes two guard plates, forming a movement gap extending along the height direction between the two guard plates; the movement frame has a mounting portion, which is located within the movement gap and slides in contact with the two guard plates.

15. The seat according to claim 14, characterized in that, The motor assembly includes a drive rod extending along the height direction into the movement gap, the drive rod being connected to the mounting portion of the motion frame and driving the motion frame to move.

16. The seat according to claim 1, characterized in that, The headrest assembly is provided with a first cable, and the insertion rod is provided with a first connector that connects to the first cable; The backrest assembly is provided with a second cable, and the slot is provided with a second connector that connects to the second cable; After the insertion rod is inserted into the slot, the first connector and the second connector are electrically connected.

17. A method of using a seat in a vehicle, characterized in that, One of the vehicle and the seat is provided with a control unit; The seat includes a backrest assembly and also includes: The motor assembly is controlled to rotate by the control unit; A motion frame, mounted on the motor assembly and driven to move by the motor assembly; A headrest assembly includes a insert rod; the insert rod is adapted to be mounted on and detached from the motion frame; and A locking rod, mounted on the motion frame and adapted to engage or disengage from the insert rod; The method of use includes the following steps: Step 1: The control unit receives an instruction to disassemble the headrest assembly; Step 2: The control unit calculates the number of first rotations required for the motor assembly when the moving frame moves to the point where the locking rod separates from the insertion rod, based on the initial position of the moving frame; Step 3: The control unit instructs the motor assembly to rotate the first number of revolutions along the first rotation direction, and the motion frame moves along the first motion direction to separate the locking rod from the insertion rod, so that the locking rod is in the first state and the insertion rod is in the unlocked state; and Step 4: Separate the insert rod from the motion frame to detach the headrest assembly from the backrest assembly.

18. The method of use according to claim 17, characterized in that, The method of use also includes: Step 5: After the headrest assembly is disassembled, the control unit calculates the second number of rotations the motor assembly needs to make when the motion frame moves to the preset position along the second motion direction opposite to the first motion direction, based on the position of the motion frame. Step Six: The control unit instructs the motor assembly to rotate the second number of revolutions along a second rotation direction opposite to the first rotation direction; the motion frame moves along the second motion direction to the preset position; and the locking rod is in the second state. Step 7: Install the insert rod onto the motion frame, engage the locking rod with the insert rod to lock the insert rod, and install the headrest assembly onto the backrest assembly.

19. The method of use according to claim 18, characterized in that, The motion frame has a first stroke and a second stroke connected together; the motion frame is adapted to move along the first motion direction within the second stroke to bring the plug into the unlocked state.

20. The method of use according to claim 19, characterized in that, In step three, the motion frame is adapted to move along the first motion direction to the upper stop point of the second stroke, away from the first stroke, so that the locking rod is in the first state and the insertion rod is in the unlocked state.

21. The method of use according to claim 19, characterized in that, In step six, the preset position is within the first travel distance.

22. A method of using a seat in a vehicle, characterized in that, One of the vehicle and the seat is provided with a control unit; The seat includes a backrest assembly and also includes: The motor assembly is controlled to rotate by the control unit; A motion frame, mounted on and driven by the motor assembly; and A headrest assembly, including a headrest body; the headrest assembly is mounted on the motion frame; The method of use includes the following steps: Step 1: The control unit receives a command to adjust the height of the headrest body; Step Two: Based on the initial position of the motion frame, the control unit calculates the number of third rotations the motor assembly needs to make when the motion frame moves the headrest body to the specified height; and Step 3: The control unit instructs the motor assembly to rotate the third number of revolutions, and the motion frame drives the headrest body to move to the specified height.

23. The method of use according to claim 22, characterized in that, The motion frame has a first stroke and a second stroke connected together, and the motion frame moves within the first stroke to adjust the height of the headrest body.

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