Quick plugging structure assembly of automobile seat headrest

Abstract

The utility model belongs to the field of headrest insertion and extraction, and provides a quick insertion and extraction structure assembly of an automobile seat headrest. The guide sleeve is arranged on the seat framework, a plurality of headrest supporting rods are arranged on the headrest body, and each headrest supporting rod is movably inserted into the guide sleeve; the power supply connecting piece is detachably arranged on the guide sleeve; the plug connector is detachably connected to any headrest supporting rod so that an extension plug can be formed at the tail end of the headrest supporting rod, and the headrest supporting rod with the extension plug can be inserted into the guide sleeve in advance and connected to the power source connecting piece in an inserted mode. Compared with the prior art, the rapid plug-pull structure has the advantages that the overall structure is simple, the power connecting piece is directly installed on the guide sleeve, the manufacturing cost is reduced, the rapid plug-pull structure is improved to adapt to the scene, meanwhile, the extension plug which can be inserted into the guide sleeve in advance is formed on any headrest supporting rod through the plug connector, and the practicability is high. Loosening caused by machining errors during assembly is prevented, and stability is improved.

Description

Technical Field

[0001] The utility model belongs to the field of plugging and unplugging of headrests, and in particular relates to a quick plugging and unplugging structure assembly of a car seat headrest. Background Art

[0002] As the frequency of automobile use increases, the functions of automobiles also increase with people's needs. Existing automobiles can fold down seats to the rear position after removing the headrests so that the backrests are flush with the cushions of the second row, thereby forming a bed for users to rest.

[0003] For seats with music headrests, the music headrests are wire harnesses with electrical connections, which can be electrically connected to the wire harnesses on the car seats. However, the installation process of the power connector in the existing music headrests is relatively complicated, and it is often necessary to pre-install the seat sheet metal on the seat frame, and then detachably connect the connecting plate and the fixed guide sleeve on the seat sheet metal, and finally place the power connector in the fixed guide sleeve. The entire installation process is relatively complicated, which not only increases the manufacturing cost, but also the seat sheet metal and the connecting plate occupy a large space, which limits the application scenarios of the structure. In addition, most of the headrest support rods with an outward-facing eight design have the same overall length, which also makes it very easy for the headrest support rods to become loose in the guide sleeve due to processing errors when the two headrest support rods are assembled into the guide sleeve, which increases the number of assembly times and also affects the stability of the quick plug-in structure. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: to propose a quick-plug structure assembly for a car seat headrest with a simple overall structure, which reduces manufacturing costs by directly installing the power connector on the guide sleeve, improves the adaptability of the quick-plug structure to different scenarios, and uses a connector to form an extended plug on any headrest support rod to prevent loosening due to processing errors during assembly, thereby improving the stability.

[0005] The utility model solves the technical problem by adopting a technical solution of providing a quick plug-in and pull-out structure assembly of a car seat headrest, comprising: a headrest body;

[0006] A guide sleeve is arranged on the seat frame, and a plurality of headrest support rods are arranged on the headrest body, and each of the headrest support rods is movably inserted in the guide sleeve;

[0007] A power connector and a plug connector, wherein the power connector is detachably arranged on the guide sleeve; the plug connector is detachably connected to any one of the headrest support rods to form an extension plug at the end of the headrest support rod, so that the headrest support rod with the extension plug can be pre-inserted into the guide sleeve and plugged into the power connector.

[0008] In the above-mentioned quick plug-in and pull-out structure assembly of a car seat headrest, the connector also includes an electrode plug, the electrode plug is formed with a plug hole located inside the extension plug, and the plug hole is movably plugged into the power connector.

[0009] In the above-mentioned quick-plug structure assembly of a car seat headrest, the connector is formed with a connecting portion connected to the extension plug, the outer wall of the connecting portion can be coated with adhesive, and the headrest support rod is hollow; when the connecting portion extends into the headrest support rod and is threadedly connected to it, the adhesive can prevent the connecting portion from detaching from the headrest support rod.

[0010] In the above-mentioned quick plug-in structure assembly of a car seat headrest, the power connector includes:

[0011] A fixing sleeve connected to a side of the guide sleeve away from the headrest body;

[0012] A guide block and an electrode plug, which are movably arranged in the fixed sleeve, and the electrode plug is connected to the middle position of the guide block, so that the electrode plug is movably plugged into the plug hole along the axial direction of the fixed sleeve by relying on the guide block;

[0013] The elastic member is arranged in the vertical direction, one end of the elastic member is connected to the fixing sleeve, and the other end is connected to the guide block, so that the electrode plug column can be tightly inserted into the plug hole.

[0014] In the above-mentioned quick plug-in and pull-out structure assembly of a vehicle seat headrest, the fixing sleeve includes:

[0015] The mounting portion has a snap-fit ​​block formed on its inner wall, and a snap-fit ​​groove formed on the outer wall of the guide sleeve, wherein the snap-fit ​​block is movably snap-fitted into the snap-fit ​​groove to fix the mounting portion on the guide sleeve;

[0016] The guide part is located at the bottom of the mounting part and is interconnected with the mounting part. The guide block and the elastic member are movably arranged in the guide part so that the guide block drives the electrode plug to extend into the mounting part and be tightly inserted into the plug hole.

[0017] In the above-mentioned quick plug-in and pull-out structure assembly of a vehicle seat headrest, the fixing sleeve includes:

[0018] A mounting portion, which is laser welded to the end of the guide sleeve away from the headrest body, and the outer diameter of the mounting portion does not exceed the outer diameter of the guide sleeve;

[0019] The guide part is located at the bottom of the mounting part and is interconnected with the mounting part. The guide block and the elastic member are movably arranged in the guide part so that the guide block drives the electrode plug to extend into the mounting part and be tightly inserted into the plug hole.

[0020] In the above-mentioned quick-plug structure assembly of a car seat headrest, the engaging groove includes a vertical guide portion and a horizontal guide portion that are connected to each other, and the vertical guide portion is used to guide the mounting portion to be mounted on the guide sleeve; a protruding block is provided in the horizontal guide portion, and a locking groove is formed between the protruding block and the horizontal guide portion, and the engaging block is movably engaged in the locking groove to limit the mounting portion from rotating relative to the guide sleeve.

[0021] In the above-mentioned quick plug-in and pull-out structure assembly of a car seat headrest, the guide portion is provided with a plurality of buckles and limit grooves, each of the limit grooves is correspondingly arranged below the buckle, a guiding inclined surface is provided on the inner wall of the buckle, and the guide block forms a limit column and locking blocks distributed at intervals in the horizontal direction;

[0022] When the guide block is inserted into the guide part in the vertical direction, the buckle can be squeezed and deformed when the locking block slides through, allowing the locking block to be movably engaged in the limiting groove, so that the limiting column can be movably attached to the inner wall of the guide part to limit the displacement of the guide block in the horizontal direction.

[0023] In the above-mentioned quick plug-in and pull-out structure assembly of a car seat headrest, a clearance groove is also formed on the outer wall of the guide sleeve, and the clearance groove is located below the protruding block. The protruding block can be squeezed and deformed along the direction of the clearance groove when the locking block crosses over.

[0024] In the above-mentioned quick plug-in and pull-out structure assembly of a car seat headrest, a socket may be provided at the top of the guide block, a positioning groove and a plurality of the plug holes are distributed on the socket, and an anti-mistake block and a plurality of the electrode plug posts corresponding to the plug holes may be provided in the extension plug;

[0025] When the electrode plug is movably inserted into the plug hole, the anti-error block is inserted into the positioning groove to prevent the extension plug from rotating relative to the socket.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] (1) The utility model relates to a quick-plug structure assembly for a vehicle seat headrest, which effectively avoids the design and installation of seat sheet metal, connecting plates and fixed guide sleeves on the seat frame by directly installing the power connector on the guide sleeve. While reducing the manufacturing cost, it also greatly increases the application scenarios of the quick-plug structure and improves flexibility. At the same time, a plug-in component is used to form an extension plug at the end of any headrest support rod, so that the headrest can be pre-inserted into the guide sleeve during the installation process using the extension plug. After the installation position is accurate, the remaining headrest support rods can be inserted into the guide sleeve. While reducing the multiple assembly of the headrest due to the processing error of the headrest support rod, it also prevents the extension plug from loosening when plugging in, thereby improving the overall stability of the quick-plug structure assembly.

[0028] (2) The elastic member is pressed against the guide block, and the elastic expansion of the elastic member is utilized to effectively ensure that the elastic member always pushes the guide block to maintain an upward force, thereby improving the stability of the electrode plug post on the guide block when plugging into the plug hole.

[0029] (3) The locking block on the guide block is movably engaged in the limiting groove of the guide part, which effectively prevents the guide block from being separated from the guide part. In addition, the locking groove is formed by the raised block in the horizontal guide part. While stabilizing the fixing sleeve, it can also give way to the locking groove when the engaging block is engaged with the locking groove, thereby improving the smoothness and stability of the quick plug-in structure during installation.

[0030] (4) By laser welding the mounting portion whose outer diameter does not exceed the outer diameter of the guide sleeve to the end of the guide sleeve away from the headrest support rod, it is possible to avoid inaccuracies during manual assembly and reduce the overall external size of the mounting portion when installed on the guide sleeve, thereby effectively saving the space occupied by the component in the seat frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the main view of this application;

[0032] Figure 2 It is a comparative schematic diagram of two headrest support rods on the headrest body;

[0033] Figure 3 yes Figure 1 A cross-sectional view of a headrest support rod with an extended plug;

[0034] Figure 4 It is a schematic diagram of the structure of the engaging groove at the end of the guide sleeve;

[0035] Figure 5 This is a top view of the guide block and the electrode plug when they are installed in the fixed sleeve;

[0036] Figure 6 This is a view of the installation structure when the installation part and the guide sleeve are laser welded;

[0037] Figure 7 yes Figure 5 Side view of

[0038] Figure 8 It is a three-dimensional diagram of the guide block and the electrode plug post;

[0039] Fig. 9 is a structural view of the socket in the second embodiment;

[0040] Fig.10 It is a schematic diagram of the internal structure of the extension plug in the second embodiment.

[0041] In the figure, 1, headrest body; 10, headrest support rod;

[0042] 2. Seat frame;

[0043] 3. Guide sleeve; 30. Engaging groove; 300. Vertical guide portion; 301. Horizontal guide portion; 301a. Protruding block; 301b. Locking groove; 31. Displacement groove;

[0044] 4. Power supply connector; 40. Fixing sleeve; 400. Mounting portion; 400a. Clamping block; 401. Guide portion; 401a. Buckle; 401b. Limiting groove; 401c. Guide slope; 41. Guide block; 410. Limiting column; 411. Locking block; 42. Electrode plug column; 43. Elastic member; 44. Socket; 440. Positioning groove;

[0045] 5. Connector; 50. Extension plug; 51. Connecting part; 52. Electrode plug; 53. Plug hole; 54. Anti-error block. DETAILED DESCRIPTION

[0046] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0047] It should be noted that, in this solution, the quick plug-in structure for the headrest is mainly described in detail, but the quick plug-in structure of the headrest is not limited to being used in car seats, but can also be applied to other places, such as armchairs in daily life.

[0048] Embodiment 1

[0049] like Figures 1 to 10As shown, the utility model is a quick-plug structure assembly of a car seat headrest, comprising: a headrest body; a guide sleeve 3 arranged on a seat frame 2, a plurality of headrest support rods 10 are arranged on the headrest body, and each headrest support rod 10 is movably inserted in the guide sleeve 3; a power connector 4 and a plug connector 5, the power connector 4 is detachably arranged on the guide sleeve 3; the plug connector 5 is detachably connected to any one of the headrest support rods 10 to form an extension plug 50 at the end of the headrest support rod 10, so that the headrest support rod 10 with the extension plug 50 can be pre-inserted into the guide sleeve 3 and plugged into the power connector 4.

[0050] In this embodiment, the power connector 4 is directly and detachably arranged at the bottom end of the guide sleeve 3, such as Figure 1 and Figure 3 As shown, compared with the traditional installation method, this method effectively avoids the design and installation of the seat sheet metal, the connecting plate and the fixing guide sleeve 3 on the seat frame 2, while saving the installation space, it also reduces the manufacturing cost, greatly increases the application scenarios of the quick-insertion structure, and thus improves the flexibility; at the same time, the present solution also uses the connector 5 to form an extension plug 50 at the end of any headrest support rod 10, such as Figure 2 As shown, the two headrest support rods 10 in this solution are both designed in an outward-facing "X" shape, and under the action of the extension plug 50, Figure 2 The headrest support rod 10 on the right side is much longer than Figure 2 The headrest support rod 10 on the left side, so that when the headrest body is assembled, the headrest support rod 10 with the extension plug 50 can be pre-entered into the guide sleeve 3, and after the headrest support rod 10 is adjusted to the assembly position, Figure 2 The left headrest support rod 10 is located at the port of the left guide sleeve 3 of the seat frame 2 and then inserted into the guide sleeve 3. This design is conducive to reducing the multiple assembly phenomenon of the headrest due to the processing error of the headrest support rod 10, and also prevents the extension plug 50 from loosening when plugged in, thereby improving the overall stability of the quick plug-in structure assembly.

[0051] The connector 5 is formed with a connecting portion 51 connected to the extension plug 50 . The headrest support rod 10 is hollow so that the connecting portion 51 can extend into the headrest support rod 10 and be threadedly connected thereto.

[0052] Preferably, in this solution, adhesive can be applied to the external thread of the connection part 51, and the adhesive is used to further improve the stability of the connection between the connection part 51 and the end of the headrest support rod 10, thereby avoiding the connection part 51 from loosening when connected to the headrest support rod 10 due to thread processing errors, effectively preventing the connection part 51 from detaching from the headrest support rod 10 due to looseness, and improving the stability of the installation of the structure. It should be noted that for the adhesion between the connection part 51 and the inner wall of the headrest support rod 10, not only adhesives can be used, but also other adhesive substances such as glue can be used instead.

[0053] like Figure 3 As shown, the connection part 51 is located at the top of the extension plug 50, and an external thread is formed on the outer wall of the connection part 51, and an internal thread is formed inside the hollow headrest support rod 10. This solution realizes the final connection through the threaded cooperation of the two. This method is not only simple in structure, but also provides convenience for subsequent installation and disassembly, and is also conducive to subsequent maintenance operations. In addition, the connection part 51 and the extension plug 50 are designed as a convex shape as a whole, and the step formed by the convex shape is movably pressed against the bottom wall of the guide sleeve 3 headrest support rod 10, thereby playing a positioning effect when the connector 5 is installed, ensuring the stability and accuracy of the connector 5 when it is installed at the bottom end of the headrest support rod 10.

[0054] Continue to refer Figure 3 The connector 5 also includes an electrode plug 52, which is formed with a plug hole 53 located inside the extension plug 50. It is worth noting that the outer sleeve, the plug hole 53 inside the electrode plug 52 and the above-mentioned connecting portion 51 and the extension plug 50 structure can be manufactured and formed in a split manner, or can be formed in an integrated injection molding manner. When the connector 5 is connected to the end of the headrest support rod 10, when the headrest is assembled, the electrode plug 52 and the plug hole 53 can be movably connected to the power connector 4, so that some electrical components such as speakers and displays located inside the headrest are energized. When the headrest support rod 10 drives the connector 5 to disengage from the power connector 4, the power is cut off, and the smoothness of the headrest quick release can be ensured without being affected by other structures.

[0055] The power connector 4 includes: a fixing sleeve 40, connected to the side of the guide sleeve 3 away from the headrest body; a guide block 41 and an electrode plug 42, which are movably arranged in the fixing sleeve 40, and the electrode plug 42 is connected to the middle position of the guide block 41, so that the electrode plug 42 can be movably plugged into the plug hole 53 along the axial direction of the fixing sleeve 40 by relying on the guide block 41; an elastic member 43, which is arranged in the vertical direction, one end of the elastic member 43 is connected to the fixing sleeve 40, and the other end is connected to the guide block 41, so that the electrode plug 42 can be tightly plugged into the plug hole 53.

[0056] The power connector 4 in this solution is mainly connected to the guide sleeve 3 through the fixing sleeve 40. Figure 3 As shown, when the fixing sleeve 40 is installed on the bottom of the guide sleeve 3, there will be no relative displacement between the two. Since the electrode plug 42 and the guide block 41 are both movably arranged in the fixing sleeve 40, when the headrest support rod 10 drives the connector 5 to be plugged into the fixing sleeve 40 in the vertical direction, the plug hole 53 can be accurately plugged into the electrode plug 42, thereby realizing the electrical connection of the electrical parts in the headrest. It is worth noting that an elastic member 43 is connected to the bottom of the guide block 41. On the one hand, the elastic member 43 can provide a buffering effect when the electrode plug 42 is plugged into the plug hole 53, avoiding the electrode plug 42 from being broken or damaged due to the rigid plugging between the two. On the other hand, it can provide the guide block 41 with a buffering effect when plugging along the axis direction of the fixing sleeve 40 (i.e. Figure 3 The electrode plug post 42 can be always pressed tightly against the plug hole 53 under the elastic expansion of the elastic member 43 itself, thereby ensuring the stability of the plug hole 53 and the electrode plug post 42 when they are plugged in.

[0057] The fixing sleeve 40 includes: a mounting portion 400, on the inner wall of which a snap-fit ​​block 400a is formed, and on the outer wall of the guide sleeve 3 a snap-fit ​​groove 30 is formed, the snap-fit ​​block 400a is movably snap-fitted in the snap-fit ​​groove 30, so as to fix the mounting portion 400 on the guide sleeve 3; a guide portion 401, which is located at the bottom of the mounting portion 400 and is interconnected therewith, and the guide block 41 and the elastic member 43 are both movably arranged in the guide portion 401, so that the guide block 41 drives the electrode plug 42 to extend into the mounting portion 400 and be tightly inserted into the plug hole 53.

[0058] Specifically, the fixing sleeve 40 is mainly composed of a mounting portion 400 and a guide portion 401. Figure 3 , Figure 4 and Figure 5 When the mounting portion 400 is sleeved on the end of the guide sleeve 3, the locking block 400a on the mounting portion 400 is movably engaged in the locking groove 30 on the outer wall of the guide sleeve 3, so that the fixing sleeve 40 can be connected to the guide sleeve 3. This structure can achieve the effect of quick installation and disassembly, and provides convenience for replacing its internal parts when they are damaged; in addition, the guide portion 401 is connected to the bottom of the mounting portion 400, and the above-mentioned elastic member 43 and guide block 41 are movably arranged in the guide portion 401. The limiting effect of the guide portion 401 on the guide block 41 is utilized, and then under the action of the elastic member 43, it is ensured that the guide block 41 drives the electrode plug 42 to accurately complete the plug-in task with the plug-in hole 53, which greatly improves the stability of the headrest quick plug-in structure.

[0059] With respect to the installation method of the fixing sleeve 40 in the present solution, another implementation method is proposed as an alternative. Specifically, under the premise of also being composed of the mounting portion 400 and the guide portion 401, as shown in FIG. Figure 6As shown, the top wall of the mounting portion 400 and the end of the guide sleeve 3 away from the headrest support rod 10 are connected by laser welding, so that the outer wall of the mounting portion 400 and the outer wall of the guide sleeve 3 are just flush, that is, when the outer diameter of the mounting portion 400 does not exceed the outer diameter of the guide sleeve 3, the connection between the two is achieved. This method simplifies the overall structure of the mounting portion 400 and the guide sleeve 3 (that is, there is no need to design the snap block 400a and the snap groove 30), which can not only effectively avoid the inaccuracy of manual assembly of the mounting portion 400 and the guide sleeve 3, but also can save the space occupied by the component in the seat frame by reducing the overall external size of the mounting portion 400 when it is installed on the guide sleeve. It is worth noting that the guide parts on the fixed sleeve in this embodiment are the same as the above-mentioned implementation structure, and will not be repeated here.

[0060] The locking groove 30 includes a vertical guide portion 300 and a horizontal guide portion 301 which are connected to each other. The vertical guide portion 300 is used to guide the mounting portion 400 to be mounted on the guide sleeve 3. A protruding block 301a is provided in the horizontal guide portion 301, and a locking groove 301b is formed between the protruding block 301a and the horizontal guide portion 301. The locking block 400a is movably engaged in the locking groove 301b to limit the mounting portion 400 from rotating relative to the guide sleeve 3.

[0061] Further, refer to Figure 4 The engaging groove 30 is composed of a vertical guide portion 300 and a horizontal guide portion 301, and is designed in a seven-shaped shape as a whole, wherein the protruding block 301a is close to the end of the horizontal guide portion 301 away from the vertical guide portion 300, so as to form a locking groove 301b in the horizontal guide portion 301. Therefore, during the installation process of the above-mentioned fixing sleeve 40, it is necessary to align the engaging block 400a in the mounting portion 400 with the vertical guide portion 300 in advance, that is, when the engaging block 400a moves along the vertical guide portion 300 to Figure 4 When the horizontal guide part 301 and the vertical guide part 300 meet, the worker can rotate the fixing sleeve 40, and then move the locking block 400a along the horizontal guide part 301 and lock it in the locking groove 301b, and use the raised block 301a to limit the locking block 400a, so as to avoid the locking block 400a moving in the horizontal guide part 301 and affecting the stability of the fixing sleeve 40 during installation, and effectively prevent the fixing sleeve 40 from detaching from the guide sleeve 3 during use.

[0062] Preferably, a clearance groove 31 is formed on the outer wall of the guide sleeve 3, and the clearance groove 31 is located below the protruding block 301a. When the engaging block 400a crosses the protruding block 301a and is engaged in the locking groove 301b, the protruding block 301a can be squeezed and deformed along the direction of the clearance groove 31 due to the extrusion force received by the engaging block 400a when crossing. In addition to ensuring the smoothness when the engaging block 400a smoothly crosses the protruding block 301a and is engaged in the locking groove 301b, it can also effectively prevent the protruding block 301a from being worn or even broken due to the extrusion of the engaging block 400a, thereby providing a guarantee for the stability of the fixing sleeve 40 when it is connected to the guide sleeve 3. Of course, the connection between the guide sleeve 3 and the fixing sleeve 40 in this solution is not limited to this connection method, and other installation methods such as threaded connection can also be used as an alternative.

[0063] The guide portion 401 is provided with a plurality of buckles 401a and limiting grooves 401b, each limiting groove 401b is correspondingly arranged below the buckle 401a, and a guiding inclined surface 401c is provided on the inner wall of the buckle 401a. The guide block 41 forms a limiting column 410 and spaced locking blocks 411 in the horizontal direction; when the guide block 41 is inserted into the guide portion 401 in the vertical direction, the buckle 401a can be squeezed and deformed when the locking block 411 slides through, and the locking block 411 is allowed to be movably connected to the limiting groove 401b, so that the limiting column 410 is movably attached to the inner wall of the guide portion 401 to limit the displacement of the guide block 41 in the horizontal direction.

[0064] For installation of guide block 41, refer to Figure 3 , Figure 7 and Figure 8 It is worth noting that the distance between the two symmetrically arranged locking blocks 411 on the guide block 41 is greater than the diameter of the limiting column 410, so when Figure 8 The guide block 41 drives the electrode plug 42 to be inserted from top to bottom in the vertical direction. Figure 3 When the guide block 41 is in the guide portion 401, the locking block 411 contacts the buckle 401a at the top of the guide portion 401 in advance, and the guiding inclined surface 401c on the buckle 401a provides a guiding effect when the guide block 41 is installed, ensuring its accuracy and stability during installation; when the guide block 41 continues to move, the locking block 411 can push the buckle 401a to move along the guide portion 401, respectively. Figure 3 Move left or right, that is, the opening formed between the buckles 401a gradually increases, and after the locking block 411 passes through the buckle 401a, the buckle 401a can be reset to the position due to its own elastic deformation. Figure 3As shown in the position, the locking block 411 is placed in the limiting groove 401b at the bottom of the buckle 401a. The limiting groove 401b can limit the reciprocating distance of the guide block 41 in the vertical direction of the guide portion 401. At the same time, the resetting of the buckle 401a further prevents the guide block 41 from detaching from the guide portion 401, thereby improving the stability of the quick plug-in structure during operation.

[0065] Further, when the locking block 411 is movably engaged in the limiting groove 401b, the limiting column 410 on the guide block 41 is movably attached to the inner wall of the guide portion 401. Figure 3 and Figure 5 When the limiting column 410 is in close contact with the inner wall of the guide block 41, the guide block 41 is effectively prevented from moving along the inner edge of the guide portion 401. Figure 3 The guide block 41 is shaken in the left and right directions, and the limiting column 410 is used to guide the reciprocating movement of the guide block 41 in the vertical direction, so as to improve the stability of the electrode plug 42 on the guide block 41 and the plug hole 53 during the plugging process.

[0066] Preferably, in some structures with adjustable headrest heights, a plurality of height adjustment slots are often provided on the headrest support rod 10, and under the adjustment slots of different heights, the present solution can lengthen the above-mentioned guide portion 401 and the elastic member 43 as a whole (not shown in the figure), so that the elastic member 43 has sufficient displacement space for the guide block 41 and the electrode plug post 42 under sufficient elastic energy storage, that is, under the joint action of the overall stretched elastic member 43 and the guide portion 401, the headrests at different heights can complete the plug-in task of the plug-in hole 53 and the electrode plug post 42 through this structure, thereby allowing the quick plug-in structure of the headrest to adapt to different scenarios, greatly improving the flexibility during use.

[0067] Based on the above embodiments, Figure 3 As shown, a through hole is provided at the bottom of the guide portion 401 for the wire harness to pass through. Preferably, during the design process, the diameter of the through hole can be slightly larger than the diameter of the guide block 41, that is, the guide block 41 is provided along the guide block 41. Figure 3 During the reciprocating movement in the vertical direction, the bottom of the guide block 41 (i.e. Figure 3 The lower half of the locking block 411 on the middle guide block 41 can pass through the through hole and extend a part of it. This design can reduce the space required for the guide part 401 to be extended according to the height adjustment of the above-mentioned headrest while ensuring that the quick plug-in structure can also achieve stable plug-in, saving material usage and also reducing the overall space occupied by the power connector 4.

[0068] Embodiment 2

[0069] A socket 44 may also be provided at the top of the guide block 41, and a positioning groove 440 and a plurality of plug holes 53 are distributed on the socket 44. An anti-error block 54 and a plurality of electrode plug posts 42 corresponding to the plug holes 53 may also be provided in the extension plug 50; when the electrode plug post 42 is movably inserted in the plug hole 53, the anti-error block 54 is inserted in the positioning groove 440 to prevent the extension plug 50 from rotating relative to the socket 44.

[0070] In addition to the plugging method of the plugging hole 53 and the electrode plug post 42 of the first embodiment, the plugging method of the second embodiment can also be used. It should be noted that the solution of the second embodiment only changes the plugging method of the electrode plug post 42 and the plugging hole 53, and the other structures are the same as those of the first embodiment. Specifically, the top end of the guide block 41 is formed Fig. 9 The socket 44 shown in the figure has a plurality of plug holes 53 formed therein as in the first embodiment, and a plurality of electrode plug posts 42 are formed in the extension plug 50 connected to the end of the headrest support rod 10, and the electrode plug posts 42 correspond to the plug holes 53 one by one. The difference is that the present solution further has a positioning groove 440 and an anti-error block 54, such as Fig. 9 and Fig.10 As shown, during the plugging process, the anti-misalignment block 54 needs to be aligned with the positioning groove 440 before the plugging task of the plugging hole 53 and the electrode plug post 42 in the second embodiment can be completed, effectively avoiding the misalignment during plugging and affecting the smoothness and stability of the quick plug-in structure during plugging.

[0071] Preferably, the plug-in structure used in the second embodiment can be similar to the plug-in interface structure on the audio, so the shapes of the socket 44 and the extension plug 50 in the second embodiment can be changed according to actual usage requirements, and are not limited to this method. For example, a trapezoidal plug-in interface can be used as a substitute.

[0072] It should be noted that the elastic member 43 in this solution may be a compression spring, a return spring or other elastic devices.

[0073] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0074] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0075] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A quick plug-in and pull-out structure assembly for a car seat headrest, characterized in that: include: headrest body; A guide sleeve is arranged on the seat frame, and a plurality of headrest support rods are arranged on the headrest body, and each of the headrest support rods is movably inserted in the guide sleeve; A power connector and a plug connector, wherein the power connector is detachably arranged on the guide sleeve; the plug connector is detachably connected to any one of the headrest support rods to form an extension plug at the end of the headrest support rod, so that the headrest support rod with the extension plug can be pre-inserted into the guide sleeve and plugged into the power connector.

2. The quick-plug structure assembly of a vehicle seat headrest according to claim 1, characterized in that: The plug connector also includes an electrode plug, which is formed with a plug hole located inside the extension plug, and the plug hole is movably plugged into the power connector.

3. The quick-plug structure assembly of a vehicle seat headrest according to claim 1, characterized in that: The connector is formed with a connecting portion connected to the extension plug, and an adhesive may be coated on the outer wall of the connecting portion. The headrest support rod is hollow; when the connecting portion extends into the headrest support rod and is threadedly connected thereto, the adhesive can prevent the connecting portion from detaching from the headrest support rod.

4. The quick plug-in and pull-out structure assembly of a vehicle seat headrest according to claim 2, characterized in that: The power connection element comprises: A fixing sleeve connected to a side of the guide sleeve away from the headrest body; A guide block and an electrode plug, which are movably arranged in the fixed sleeve, and the electrode plug is connected to the middle position of the guide block, so that the electrode plug is movably plugged into the plug hole along the axial direction of the fixed sleeve by relying on the guide block; The elastic member is arranged in the vertical direction, one end of the elastic member is connected to the fixing sleeve, and the other end is connected to the guide block, so that the electrode plug column can be tightly inserted into the plug hole.

5. The quick plug-in and pull-out structure assembly of a vehicle seat headrest according to claim 4, characterized in that: The fixing sleeve comprises: The mounting portion has a snap-fit ​​block formed on its inner wall, and a snap-fit ​​groove formed on the outer wall of the guide sleeve, wherein the snap-fit ​​block is movably snap-fitted into the snap-fit ​​groove to fix the mounting portion on the guide sleeve; The guide part is located at the bottom of the mounting part and is interconnected with the mounting part. The guide block and the elastic member are movably arranged in the guide part so that the guide block drives the electrode plug to extend into the mounting part and be tightly inserted into the plug hole.

6. The quick plug-in / pull-out structure assembly of a vehicle seat headrest according to claim 4, characterized in that: The fixing sleeve comprises: A mounting portion, which is laser welded to the end of the guide sleeve away from the headrest body, and the outer diameter of the mounting portion does not exceed the outer diameter of the guide sleeve; The guide part is located at the bottom of the mounting part and is interconnected with the mounting part. The guide block and the elastic member are movably arranged in the guide part so that the guide block drives the electrode plug to extend into the mounting part and be tightly inserted into the plug hole.

7. The quick plug-in and pull-out structure assembly of a vehicle seat headrest according to claim 5, characterized in that: The engaging groove includes a vertical guide portion and a horizontal guide portion which are connected to each other, the vertical guide portion is used to guide the mounting portion to be sleeved on the guide sleeve; a protruding block is provided in the horizontal guide portion, a locking groove is formed between the protruding block and the horizontal guide portion, and the engaging block is movably engaged in the locking groove to limit the mounting portion from rotating relative to the guide sleeve.

8. The quick plug-in and pull-out structure assembly of a vehicle seat headrest according to claim 5 or 6, characterized in that: The guide portion is provided with a plurality of buckles and limiting grooves, each of the limiting grooves is correspondingly arranged below the buckle, a guiding inclined surface is arranged on the inner wall of the buckle, and the guide block forms a limiting column and locking blocks distributed at intervals in the horizontal direction; When the guide block is inserted into the guide part in the vertical direction, the buckle can be squeezed and deformed when the locking block slides through, allowing the locking block to be movably engaged in the limiting groove, so that the limiting column can be movably attached to the inner wall of the guide part to limit the displacement of the guide block in the horizontal direction.

9. The quick plug-in and pull-out structure assembly of a vehicle seat headrest according to claim 7, characterized in that: A clearance groove is also formed on the outer wall of the guide sleeve, and the clearance groove is located below the protruding block. The protruding block can be squeezed and deformed along the direction of the clearance groove when the engaging block crosses over.

10. The quick plug-in / pull-out structure assembly of a vehicle seat headrest according to claim 4, characterized in that: A socket may also be provided at the top of the guide block, and a positioning groove and a plurality of the plug holes are distributed on the socket. An anti-mistake block and a plurality of the electrode plug posts corresponding to the plug holes may also be provided in the extension plug; When the electrode plug is movably inserted into the plug hole, the anti-error block is inserted into the positioning groove to prevent the extension plug from rotating relative to the socket.

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