Pluggable wire connection for vehicle seat

Abstract

The invention relates to a pluggable wire connecting mechanism for a vehicle seat, which is simple in structure and convenient in plugging operation, and not only can ensure the correct positioning of a wiring terminal, but also can avoid abnormal sound generated during the plugging operation. The mechanism comprises a guide sleeve; inserting a rod; the first connector is arranged in the guide sleeve and comprises a first body, a flexible sleeve and a plurality of first wiring terminals, and the flexible sleeve sleeves the first body and is in interference fit with the inner wall of the guide sleeve; and the second connector is arranged at the insertion end of the insertion rod and comprises a second body and a plurality of second wiring terminals, and the mechanism is configured to allow the flexible sleeve to be extruded and deformed when the first body and the second body are inserted so as to ensure that each first wiring terminal is electrically connected with the corresponding second wiring terminal.

Description

Technical Field

[0001] This invention relates to the technical field of vehicle seat components. More specifically, this invention relates to a pluggable cable connection mechanism for vehicle seats. Background Technology

[0002] As consumers demand increasingly more functional interior components in vehicles, headrests in car seats are integrating more and more electric functionalities, such as heating, ventilation, speakers, lighting, and displays for rear passengers. These components require power via wires running through the headrests and backrests. Therefore, for vehicle seats with removable headrests, a pluggable wiring connection mechanism is needed, with a first connector located on the backrest and a second connector on the headrest, allowing for easy plugging and unplugging during headrest installation and removal.

[0003] However, the increasing demand for more and more functional components in headrests has led to an increase in the number of wires and their terminals, making pluggable wire connection mechanisms typically complex in structure. Furthermore, due to manufacturing tolerances, assembly tolerances, and other reasons, the positioning of the terminals may deviate, making plugging and unplugging operations very difficult and prone to producing unwanted noises during these operations. Summary of the Invention

[0004] The purpose of this invention is to provide a pluggable wire connection mechanism for vehicle seats, which has a simple structure and is easy to plug and unplug. It can not only ensure the correct positioning of the wiring terminals, but also avoid abnormal noise during plugging and unplugging.

[0005] To this end, the present invention provides a pluggable wire connection mechanism for a vehicle seat, comprising: a guide sleeve adapted to connect to a seat back; a plug rod adapted to connect to a seat headrest and movable axially along the guide sleeve; a first connector disposed in the guide sleeve and including a first body, a flexible sleeve, and a plurality of first terminals, the flexible sleeve being sleeved on the first body and interference-fitted with the inner wall of the guide sleeve, the plurality of first terminals being disposed in the first body; and a second connector disposed at the insertion end of the plug rod and including a second body and a plurality of second terminals disposed in the second body, the pluggable wire connection mechanism being configured to allow the flexible sleeve to be deformed by compression when the first body and the second body are plugged in, to ensure that each first terminal is electrically connected to a corresponding second terminal.

[0006] Based on the above-described technical concept, the present invention may further include any one or more of the following optional forms.

[0007] In some alternative forms, one of the first body and the second body is provided with a first guide portion, and the other of the first body and the second body is provided with a second guide portion, wherein when the first body and the second body are inserted, the first guide portion is constrained to move along the second guide portion.

[0008] In some alternative forms, the first guide portion is a guide rib extending along the moving direction of the insert rod, and the second guide portion is a guide groove extending along the moving direction of the insert rod and matching the shape of the guide rib.

[0009] In some alternative forms, one of the first body and the second body is provided with a central hole extending along the moving direction of the insertion rod, and the other of the first body and the second body is provided with a central post extending along the moving direction of the insertion rod and capable of extending into the central hole, wherein the inner wall of the central hole is formed with the guide rib, and the outer wall of the central post is formed with the guide groove; or, the inner wall of the central hole is formed with the guide groove, and the outer wall of the central post is formed with the guide rib.

[0010] In some alternative forms, the guide groove is provided with a flared opening for guiding the guide rib into it; and / or, the central hole is provided with a flared opening for guiding the central post into it.

[0011] In some alternative forms, the guide sleeve is provided with at least one snap-fit ​​interface, the first body is provided with at least one snap-fit ​​protrusion, and the flexible sleeve is provided with at least one mounting portion, wherein the snap-fit ​​protrusion snaps into the mounting hole of the mounting portion and snaps into the snap-fit ​​interface through the mounting portion.

[0012] In some alternative forms, the guide sleeve is provided with a pair of snap-fit ​​interfaces, and the first body and the flexible sleeve are respectively provided with a pair of snap-fit ​​protrusions and a pair of mounting portions, wherein the pair of snap-fit ​​interfaces, the pair of snap-fit ​​protrusions and the pair of mounting portions are all configured to be radially opposite to each other and have different shapes and / or sizes, so as to ensure that each snap-fit ​​protrusion snaps into the mounting hole of the corresponding mounting portion and snaps into the corresponding snap-fit ​​interface through the corresponding mounting portion.

[0013] In some alternative configurations, at least one side of the mounting portion is clearance-fitted with the card interface in the circumferential direction of the guide sleeve.

[0014] In some alternative forms, the flexible sleeve is interference-fitted with the inner wall of the guide sleeve by at least one arcuate rib; and / or, the outer wall of the first body is clearance-fitted with the inner wall of the guide sleeve.

[0015] In some alternative forms, the second body is snapped onto the insert rod, wherein one of the second body and the insert rod is provided with a limiting rib, and the other of the second body and the insert rod is provided with a limiting groove, so as to limit the circumferential relative position of the second body and the insert rod by the cooperation of the limiting rib and the limiting groove.

[0016] In some alternative forms, the first body includes an axially extending intermediate section and two end sections extending from both ends of the intermediate section, each end section having a smaller radial dimension than the intermediate section, and one of the end sections forming an insertion section for insertion into the second body, wherein, after the insertion section is inserted into the second body, the end face of the second body near the first body is spaced apart from the end face of the intermediate section near the second body.

[0017] In some alternative forms, the first body is provided with a plurality of first terminal slots that are circumferentially evenly distributed and used to hold the plurality of first terminals respectively, and the second body is provided with a plurality of second terminal slots that are circumferentially evenly distributed and used to hold the plurality of second terminals respectively.

[0018] In some alternative forms, each first terminal is provided with a first barb that abuts against the first body to prevent each first terminal from dislodging from its corresponding first terminal slot, and / or, each second terminal is provided with a second barb that abuts against the second body to prevent each second terminal from dislodging from its corresponding second terminal slot.

[0019] In some alternative configurations, the first connector is a male connector and the second connector is a female connector.

[0020] The pluggable wire connection mechanism for vehicle seats according to the present invention has several beneficial technical effects, especially: by setting a flexible sleeve, the manufacturing and assembly tolerances can be absorbed by the extrusion deformation between the flexible sleeve and the inner wall of the guide sleeve, so as to ensure the positioning of the first body and the first terminal in the guide sleeve, thereby realizing the correct matching of the first connector and the second connector, ensuring the normal operation of the headrest function, and at the same time absorbing abnormal noise during assembly; in addition, the overall structure of the mechanism is simple and the plugging and unplugging operation is convenient, so the cost advantage is obvious. Attached Figure Description

[0021] Other features and advantages of the invention will be better understood through the following detailed description of preferred embodiments in conjunction with the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts.

[0022] Figure 1A and Figure 1BThese are perspective views of a pluggable wire connection mechanism according to an embodiment of the present invention, when the plug assembly and the guide sleeve assembly are separated and joined.

[0023] Figure 2A and Figure 2B These are enlarged views of the pluggable wire connection mechanism when the plug assembly and the guide sleeve assembly are separated and joined.

[0024] Figure 2C This is an assembly diagram of the first connector and the second connector of the pluggable wire connection mechanism.

[0025] Figure 2D This is a partial cross-sectional view of the pluggable wire connection mechanism when the plug assembly and the guide sleeve assembly are engaged.

[0026] Figure 3A This is an exploded view of the guide sleeve assembly.

[0027] Figure 3B This is a perspective view of the first connector of the guide sleeve assembly.

[0028] Figure 3C and Figure 3D These are three-dimensional views of the first body of the first connector from different perspectives.

[0029] Figure 3E This is a three-dimensional view of the flexible sleeve of the first connector.

[0030] Figure 3F This is a cross-sectional view of the first connector.

[0031] Figure 3G This is a three-dimensional view of the guide sleeve of the guide sleeve assembly.

[0032] Figure 3H This is a cross-sectional view of the guide sleeve assembly.

[0033] Figures 3I to 3K These are several partial cross-sectional views of the guide sleeve assembly.

[0034] Figure 4A and Figure 4B These are exploded views and partial 3D views of the plug assembly.

[0035] Figure 4C This is a partial 3D view of the insert rod of the insert rod assembly.

[0036] Figure 4D This is a perspective view of the second body of the second connector of the plug assembly.

[0037] Figure 4E and Figure 4F They are along Figure 4A Partial cross-sectional views of surfaces AA and BB.

[0038] Figure 4G This is a cross-sectional view of the second connector.

[0039] Figure 5A and Figure 5B These are cross-sectional views of the insertion process of the first connector into the guide sleeve.

[0040] Figure 6A and Figure 6B These are cross-sectional views of the insertion process of the insert rod assembly into the guide sleeve assembly.

[0041] Figure 6C and Figure 6D These are cross-sectional views of the joining process of the first connector and the second connector.

[0042] Figure 7 This is a cross-sectional view showing the separation of the insert assembly and the guide sleeve assembly.

[0043] Figure 8A It is a cross-sectional view of the first connector and the second connector when they are matched in the design state.

[0044] Figure 8B It is the guide sleeve assembly in Figure 8A The front view in the indicated state.

[0045] Figure 9A This is a cross-sectional view of the first connector and the second connector when they are not matched in the design state.

[0046] Figure 9B It is the guide sleeve assembly in Figure 9A The front view in the indicated state.

[0047] Figure 10A This is a side view of the guide sleeve assembly.

[0048] Figure 10B It is along Figure 10A A cross-sectional view of surface CC, wherein the first connector does not include the flexible sleeve.

[0049] Figure 10C It is along Figure 10A A cross-sectional view of plane CC, wherein the first connector includes a flexible sleeve and the first connector and the guide sleeve are matched in the design state.

[0050] Figure 10D It is along Figure 10A A cross-sectional view of plane CC, wherein the first connector includes a flexible sleeve and the first connector and the guide sleeve are not matched in the design state.

[0051] The elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to exact scale. It should be understood that these drawings are not only for explaining and illustrating the invention, but also, where necessary, for defining the invention. Detailed Implementation

[0052] The implementation and use of specific embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of particular ways of implementing and using the invention, and are not intended to limit the scope of the invention.

[0053] In this specification, the descriptions of structural positions, such as up and down, are not absolute but relative, and these descriptions are specifically defined with reference to the position of each component in the vehicle. These directional descriptions are appropriate when the components are arranged as shown in the figures, but should be changed accordingly when the positions of the components in the figures change. Furthermore, "axial," "radial," and "circumferential" are all defined with reference to the directions of the guide sleeve and insert rod.

[0054] In this specification, unless otherwise expressly specified and limited, terms such as "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0055] In this specification, the terms “first,” “second,” “third,” “fourth,” etc., are used to describe various elements without intending to limit the positional, temporal, or importance relationships of these elements. Such terms are only used to distinguish one element from another.

[0056] like Figures 1A to 2D As shown, the pluggable wire connection mechanism according to the present invention includes a guide sleeve assembly A1 and a plug rod assembly A2. The guide sleeve assembly A1 includes a guide sleeve 100 and a first connector 200. The guide sleeve 100 is connected to the seat back, for example, fixedly connected to the upper crossbeam of the seat back. The first connector 200 is disposed in the guide sleeve 100 and connected to a plurality of first wires 230. The plug rod assembly A2 includes a plug rod 300 and a second connector 400. The plug rod 300 is connected to the seat headrest and can be inserted into the guide sleeve 100 through its insertion end to move axially along the guide sleeve 100, thereby driving the seat headrest to move up and down relative to the seat back to achieve assembly or disassembly with the seat back. The second connector 400 is disposed at the insertion end of the plug rod 300 and connected to a plurality of second wires 420.

[0057] During assembly, the first connector 200 is pre-installed in the guide sleeve 100 to form the guide sleeve assembly A1, and the second connector 400 is pre-installed on the insertion rod 300 to form the insertion rod assembly A2. After pre-installation, the insertion rod assembly A2 is inserted into the guide sleeve assembly A1, and locked into the locking groove 340 on the insertion rod 300 by a locking mechanism (e.g., ...). Figure 1A and Figure 1B The insertion rod 300 is locked in place by the cooperation shown, so that it can be as follows: Figure 2C and Figure 2D The diagram shows that the first connector 200 and the second connector 400 are physically plugged into each other, and each first wire 230 is electrically connected to the corresponding second wire 420. After the plug assembly A2 is pulled out from the guide sleeve assembly A1, the first connector 200 and the second connector 400 separate from each other, the second connector 400 is pulled out from the guide sleeve 100 along with the plug 300, while the first connector 200 remains fixed in the guide sleeve 100.

[0058] like Figures 3A to 3K As shown, in the guide sleeve assembly A1, the guide sleeve 100 has a first end 110 for inserting the insertion rod 300 and a second end 120 for mounting the first connector 200, and is provided with at least one card interface adjacent to its second end 120. The first connector 200 is, for example, the male connector shown, and includes a first body 210, a flexible sleeve 220 sleeved on the first body 210, and a plurality of first terminals 240 disposed in the first body 210 and respectively connected to the ends of a plurality of first wires 230. The first body 210 includes, in the axial direction, a middle section 211 with the largest radial dimension and a first end section 212 and a second end section 213 extending from both ends of the middle section 211, respectively. That is, the radial dimensions of both the first end section 212 and the second end section 213 are smaller than the radial dimension of the middle section 211. The middle section 211 is provided with at least one snap-fit ​​protrusion for engaging with the flexible sleeve 220 and the guide sleeve 100. The second end section 213 can serve as a plug-in section for plugging into the second connector 400. The flexible sleeve 220 is made of, for example, silicone material and is provided with at least one mounting portion, such that the snap-fit ​​protrusion of the first body 210 can snap into the mounting hole of the corresponding mounting portion of the flexible sleeve 220, and then snap into the locking interface of the guide sleeve 100 through the mounting portion, thereby achieving the assembly of the first body 210, the flexible sleeve 220, and the guide sleeve 100.

[0059] In this embodiment, especially as Figures 3C to 3GAs shown, the guide sleeve 100 is provided with a pair of snap-fit ​​interfaces, namely a first snap-fit ​​interface 130 and a second snap-fit ​​interface 140 that are radially opposite to each other and have different shapes and / or sizes. The middle section 211 of the first body 210 is correspondingly provided with a pair of snap-fit ​​protrusions, namely a first snap-fit ​​protrusion 2111 and a second snap-fit ​​protrusion 2112 that are radially opposite to each other and have different shapes and / or sizes. The flexible sleeve 220 is correspondingly provided with a pair of mounting portions, namely a first mounting portion 221 and a second mounting portion 222 that are radially opposite to each other and have different shapes and / or sizes. The first mounting portion 221 is provided with a first mounting hole 2211, and the second mounting portion 222 is provided with a second mounting hole 2221. Therefore, the first snap-fit ​​protrusion 2111 can snap into the first mounting hole 2211 of the corresponding first mounting portion 221 that matches its shape and / or size, and snap into the corresponding first mounting interface 130 that matches its shape and / or size through the corresponding first mounting portion 221. Similarly, the second snap-fit ​​protrusion 2112 can snap into the second mounting hole 2221 of the corresponding second mounting portion 222 that matches its shape and / or size, and snap into the corresponding second mounting interface 140 that matches its shape and / or size through the corresponding second mounting portion 222. This asymmetrical arrangement advantageously avoids misalignment of the first connector 200 in the circumferential direction, thereby ensuring its correct matching with the second connector 400.

[0060] Preferably, the middle section 211 of the first body 210 is provided with a pair of radially opposite third snap-fit ​​protrusions 2113, and the flexible sleeve 220 is correspondingly provided with a pair of radially opposite third mounting holes 223 that engage with the pair of third snap-fit ​​protrusions 2113, to strengthen the connection between the first body 210 and the flexible sleeve 220. More preferably, both the first snap-fit ​​protrusion 2111 and the second snap-fit ​​protrusion 2112 are provided with protrusions 2114, and the first mounting hole 2211 and the second mounting hole 2221 are correspondingly provided with recesses 224 that engage with the protrusions 2114, to further strengthen the connection between the first body 210 and the flexible sleeve 220 and prevent the first body 210 and the flexible sleeve 220 from rotating relative to each other in the circumferential direction.

[0061] In this guide sleeve assembly A1, the flexible sleeve 220 is interference-fitted with the inner wall of the guide sleeve 100. For example, as Figure 3J As shown, the flexible sleeve 220 is press-fitted with the inner wall of the guide sleeve 100 by at least one arcuate rib 225 disposed on its outer wall, for example, two arcuate ribs 225 spaced axially from each other, so as to ensure the secure installation of the first connector 200 in the guide sleeve 100 by the extrusion deformation of the flexible sleeve 220. Furthermore, as... Figure 3I and Figure 3KAs shown, the outer wall of the first body 210 (i.e., the portion of the outer wall not fitted with the flexible sleeve 220) preferably has a clearance fit with the inner wall of the guide sleeve 100 (see reference). Figure 3K The radial clearance G3 in the first body 210, and the outer wall of the first body 210 forms an angle α of approximately 1° with the inner wall of the guide sleeve 100, to facilitate the installation of the first connector 200 into the guide sleeve 100. Furthermore, as... Figure 3H As shown, after installation, in the circumferential direction of the guide sleeve 100, at least one side of the first mounting portion 221 and the second mounting portion 222 of the flexible sleeve 220 preferably engages with the first locking interface 130 and the second locking interface 140 of the guide sleeve 100 with a clearance fit (see reference). Figure 3H The circumferential clearance G2 is provided to allow the first connector 200 to rotate circumferentially by a small angle after installation to overcome manufacturing or assembly tolerances.

[0062] In this embodiment, especially as Figure 3C , Figure 3D and Figure 3F As shown, the second end section 213 of the first body 210 is provided with a plurality of circumferentially evenly distributed first terminal slots 2131, such as the eight first terminal slots 2131 shown. Eight first wires 230 with first terminals 240 enter the first body 210 along the first end section 212 of the first body 210, so that the eight first terminals 240 can be inserted into and held in the eight first terminal slots 2131 respectively. For example, each first terminal slot 2131 has a first snap-fit ​​portion 2132 at its end to snap into the free end 241 of the corresponding first terminal 240. In addition, each first terminal 240 is provided with a first barb 242, which abuts against the end face 2115 of the middle section 211 of the first body 210 to prevent the first terminal 240 from falling out of the corresponding first terminal slot 2131 in the opposite direction.

[0063] like Figures 4A to 4GAs shown, in the plug assembly A2, the plug 300 has an insertion end 310 for inserting into the guide sleeve 100, and is provided with a pair of third card interfaces 320 adjacent to the insertion end 310 and radially opposite to each other. The second connector 400 is, for example, the female connector shown, and includes a second body 410 for receiving the first connector 200 and a plurality of second terminals 430 disposed in the second body 410 and respectively connected to the ends of a plurality of second wires 420. The second body 410 has an insertion end 411 that extends into the insertion rod 300 and a snap-fit ​​end 412 that is opposite to the insertion end 411 and has a flange. The second body 410 is provided with a pair of fourth snap-fit ​​protrusions 413 that are adjacent to its snap-fit ​​end 412 and are radially opposite to each other, so that the second connector 400 can be installed into the insertion end 310 of the insertion rod 300 through the snap-fit ​​engagement of the pair of fourth snap-fit ​​protrusions 413 with a pair of third snap-fit ​​interfaces 320, and the snap-fit ​​end 412 of the second connector 400 abuts against the end face of the insertion end 310 of the insertion rod 300.

[0064] According to one implementation variation, the first connector 200 may be a female connector with a flexible sleeve 220, and the second connector 400 may be a male connector capable of being inserted into the female connector.

[0065] Preferably, one of the second body 410 and the insertion rod 300 is provided with a limiting rib, and the other of the second body 410 and the insertion rod 300 is provided with a limiting groove, so as to define the circumferential relative position of the second body 410 and the insertion rod 300 by the cooperation of the limiting rib and the limiting groove. For example, in this embodiment, the second body 410 is provided with a limiting rib 414 extending axially from its snap-fit ​​end 412 and located circumferentially between a pair of fourth snap-fit ​​protrusions 413, and the insertion rod 300 is provided with a limiting groove 330 extending axially from its insertion end 310 and located circumferentially between a pair of third snap-fit ​​interfaces 320. By arranging the limiting rib 414 and the limiting groove 330, misinstallation of the second connector 400 in the circumferential direction can be advantageously avoided, thereby ensuring its correct matching with the first connector 200.

[0066] In this embodiment, especially as Figure 4GAs shown, the second body 410 is provided with a plurality of circumferentially evenly distributed second terminal slots 415, for example, eight second terminal slots 415. Eight second wires 420 with second terminals 430 enter the second body 410 from the insertion end 411 of the second body 410, so that the eight second terminals 430 can be inserted into and held in the eight second terminal slots 415 respectively. For example, each second terminal slot 415 has a second snap-fit ​​portion 416 at its end to snap into the bent end 431 of the corresponding second terminal 430. In addition, each second terminal 430 has a second barb 432 at its end, which abuts against the abutment surface 417 inside the second body 410 to prevent the second terminal 430 from falling out of the corresponding second terminal slot 415 in the opposite direction.

[0067] According to one embodiment, in order to prevent the first terminal 240 and the second terminal 430 from reversing out of the corresponding first terminal slot 2131 and second terminal slot 415, snap-fit ​​hooks may be provided on the first body 210 and the second body 410 to engage with the snap-fit ​​slots on the first terminal 240 and the second terminal 430, respectively.

[0068] Figure 5A and Figure 5B The insertion process of the first connector 200 into the guide sleeve 100 is shown. (As follows) Figure 5A and Figure 5B As shown, during the assembly of the guide sleeve assembly A1, the first connector 200 is inserted into the guide sleeve 100 from the second end 120 along the first direction indicated by arrow F1. The inner wall of the guide sleeve 100 has a pair of radially opposing guide ramps 150. The first connector 200 is pressed through these guide ramps 150, such that the first locking surface 226 on the flexible sleeve 220 and the second locking surface 2116 on the intermediate section 211 of the first body 210 abut against the first axial end face 131 and the second axial end face 132 of the first card interface 130 of the guide sleeve 100, respectively. Furthermore, the third locking surface 227 on the flexible sleeve 220 and the fourth locking surface 2117 on the intermediate section 211 of the first body 210 abut against the third axial end face 141 and the fourth axial end face 142 of the second card interface 140 of the guide sleeve 100, respectively. Because the first card interface 130 and the second card interface 140 limit the first connector 200, the first connector 200 is installed in the guide sleeve 100, and the flexible sleeve 220 has a certain buffer deformation effect, so that the first connector 200 can move slightly in the axial and circumferential directions to overcome manufacturing or assembly tolerances.

[0069] Figures 6A to 6D The insertion process of the insert assembly A2 into the guide sleeve assembly A1 is shown. Figures 6A to 6DAs shown, when the first connector 200 and the second connector 400 need to be plugged into each other, the plug assembly A2 is inserted into the guide sleeve 100 from the first end 110 in a second direction opposite to the first direction, as indicated by arrow F2. The end of the second end section 213 of the first body 210 of the first connector 200 is formed with a first outer peripheral chamfer surface 2135, and the second body 410 of the second connector 400 has a receiving portion 401 for receiving the second end section 213. The inlet of the receiving portion 401 is formed with a second inner peripheral chamfer surface 402 (i.e., a flared opening) so that the second end section 213 is guided into the receiving portion 401 through the cooperation of the first outer peripheral chamfer surface 2135 and the second inner peripheral chamfer surface 402.

[0070] According to the present invention, one of the first body 210 and the second body 410 is provided with a first guide portion, and the other of the first body 210 and the second body 410 is provided with a second guide portion, so that the pluggable wire connection mechanism can be constrained when the first body 210 and the second body 410 are plugged in, such that the first guide portion moves along the second guide portion and allows the flexible sleeve 220 to be deformed by compression on the inner wall of the guide sleeve 100, thereby ensuring that each first terminal 240 is electrically connected to the corresponding second terminal 430 and avoiding misalignment. It is understood that the provision of the first guide portion and the second guide portion ensures the convenience of assembly, but it is not necessary. According to some implementation variations, these guide portions may not be provided, and the tolerance can be absorbed by the compression deformation of the flexible sleeve 220, ensuring the positioning of the first body 210 and the first terminal 240 in the guide sleeve 100, thereby achieving the correct matching of the first connector 200 and the second connector 400, while also absorbing abnormal noise during assembly.

[0071] Preferably, one of the first body 210 and the second body 410 is provided with a central hole extending along the moving direction (i.e., the axial direction) of the insertion rod 300, and the other of the first body 210 and the second body 410 is provided with a central post extending along the moving direction (i.e., the axial direction) of the insertion rod 300 and capable of extending into the central hole. In this embodiment, the second end section 213 of the first body 210 is provided with a central hole 2133, the entrance of which preferably forms a third inner circumferential chamfered surface 2136 (i.e., a flared opening), and the inner wall of the central hole 2133 is formed with a radially inwardly protruding guide rib 2134, which extends along the moving direction (i.e., the axial direction) of the insertion rod 300 to form the aforementioned first guide portion. The receiving portion 401 of the second body 410 is provided with a central post 418 that can be guided into the central hole 2133 by the third inner circumferential chamfered surface 2136. The outer wall of the central post 418 is formed with a radially inwardly recessed guide groove 419. The guide groove 419 extends along the moving direction (i.e., the axial direction) of the insertion rod 300 and matches the shape of the guide rib 2134 to form the aforementioned second guide portion. Preferably, the entrance of the guide groove 419 is formed with a fourth inner circumferential chamfered surface 419a (i.e., a flared opening) for guiding the guide rib 2134 into it. It is understood that the number of guide ribs 2134 and corresponding guide grooves 419 is not limited; there can be one or more pairs, as long as they can match. It is understood that the positions of the guide ribs 2134 and guide grooves 419 can be interchanged. That is, a radially outwardly recessed guide groove can be formed on the inner wall of the central hole 2133, and a radially outwardly protruding guide rib can be formed on the outer wall of the central post 418. In addition, such as Figure 2D and Figure 6B As shown, after the first connector 200 and the second connector 400 are inserted, that is, after the second end section 213 of the first connector 200 is inserted into the second body 410 of the second connector 400, the end face of the second body 410 near the first body 210 is preferably spaced apart from the end face 2115 of the middle section 211 of the first body 210 near the second body 410 (see reference). Figure 2D and Figure 6B The axial clearance G1 is used to overcome manufacturing or assembly tolerances.

[0072] Figure 7 A schematic diagram showing the separation of the insert assembly A2 and the guide sleeve assembly A1 is shown. Figure 7As shown, when the headrest needs to be removed from the seat back, the plug assembly A2 is disengaged from the first end 110 of the guide sleeve 100 in the first direction indicated by arrow F1 to separate it from the guide sleeve 100. This allows the second end section 213 of the first body 210 of the first connector 200 to disengage from the receiving part 401 of the second connector 400, thereby disconnecting the electrical connection between each first terminal 240 and the corresponding second terminal 430.

[0073] like Figure 8A and Figure 8B As shown, when the first connector 200 and the second connector 400 are matched in the design state, the guide rib 2134 of the first connector 200 slides along the guide groove 419 of the second connector 400, which will not cause obvious eccentric extrusion deformation between the flexible sleeve 220 and the inner wall of the guide sleeve 100, that is, the flexible sleeve 220 will not produce obvious asymmetrical deformation relative to its central axis. Figure 9A and Figure 9B As shown, when the first connector 200 and the second connector 400 are not matched in the designed state due to manufacturing tolerances, assembly tolerances, etc., the guide rib 2134 and the guide groove 419 cannot always be kept in the designed position. This will cause obvious extrusion deformation of the flexible sleeve 220 and the inner wall of the guide sleeve 100, for example, at the position of the region R shown. That is, the flexible sleeve 220 produces an asymmetrical eccentric extrusion deformation relative to its central axis, thereby absorbing the tolerance and realizing the self-alignment matching of the first connector 200 and the second connector 400.

[0074] Figures 10A to 10D The diagram shows pre-assembly matching schematics of guide sleeve assembly A1 under various conditions. For example... Figure 10B As shown, if the first connector 200 does not include the flexible sleeve 220, a cavity will be formed between the first connector 200 and the inner wall of the guide sleeve 100. This may cause the first connector 200 to detach and cause abnormal noise between the first connector 200 and the guide sleeve 100. Furthermore, the first connector 200 cannot absorb tolerances when mating with the second connector 400, which may cause mating failure. Figure 10C As shown, if the first connector 200 includes a flexible sleeve 220 and the first connector 200 and the guide sleeve 100 are matched in the design state, the first connector 200 will not fall off, the flexible sleeve 220 will not produce obvious eccentric extrusion deformation with the inner wall of the guide sleeve 100, and the correct pairing of the first connector 200 and the second connector 400 can be ensured subsequently. Figure 10DAs shown, if the first connector 200 includes a flexible sleeve 220 and the first connector 200 and the guide sleeve 100 are not matched in the design state, the first connector 200 will not fall off, but the flexible sleeve 220 will produce obvious eccentric extrusion deformation with the inner wall of the guide sleeve 100, for example, at the position of the region R shown, to absorb the tolerance, thereby ensuring the correct pairing of the first connector 200 and the second connector 400 in the future.

[0075] The technical content and features of the present invention have been disclosed above. However, it is understood that under the creative concept of the present invention, those skilled in the art can make various flexible changes and improvements to the above-disclosed concept, but all of them fall within the protection scope of the present invention.

[0076] The above description of the embodiments is exemplary and not restrictive, and the scope of protection of the present invention is determined by the claims.

Claims

1. A pluggable cable connection mechanism for vehicle seats, characterized in that, include: Guide sleeve, the guide sleeve being adapted to connect to the seat back; A plug rod, the plug rod being adapted to connect to a seat headrest and being movable axially along the guide sleeve; A first connector is disposed in the guide sleeve and includes a first body, a flexible sleeve, and a plurality of first terminals. The flexible sleeve is sleeved on the first body and is interference-fitted with the inner wall of the guide sleeve. The plurality of first terminals are disposed in the first body. as well as The second connector is disposed at the insertion end of the plug and includes a second body and a plurality of second terminals disposed in the second body. The pluggable wire connection mechanism is configured to allow the flexible sleeve to be squeezed and deformed when the first body and the second body are plugged in, so as to ensure that each first terminal is electrically connected to the corresponding second terminal.

2. The pluggable wire connection mechanism according to claim 1, characterized in that, One of the first body and the second body is provided with a first guide portion, and the other of the first body and the second body is provided with a second guide portion. When the first body and the second body are inserted, the first guide portion is constrained to move along the second guide portion.

3. The pluggable wire connection mechanism according to claim 2, characterized in that, The first guide portion is a guide rib extending along the moving direction of the insert rod, and the second guide portion is a guide groove extending along the moving direction of the insert rod and matching the shape of the guide rib.

4. The pluggable wire connection mechanism according to claim 3, characterized in that, One of the first body and the second body is provided with a central hole extending along the moving direction of the insertion rod, and the other of the first body and the second body is provided with a central post extending along the moving direction of the insertion rod and capable of extending into the central hole. The guide rib is formed on the inner wall of the central hole, and the guide groove is formed on the outer wall of the central column; or, the guide groove is formed on the inner wall of the central hole, and the guide rib is formed on the outer wall of the central column.

5. The pluggable wire connection mechanism according to claim 4, characterized in that, The guide groove is provided with a flared opening for guiding the guide rib into it; and / or, the central hole is provided with a flared opening for guiding the central column into it.

6. The pluggable wire connection mechanism according to claim 1, characterized in that, The guide sleeve is provided with at least one snap-fit ​​interface, the first body is provided with at least one snap-fit ​​protrusion, and the flexible sleeve is provided with at least one mounting part, wherein the snap-fit ​​protrusion snaps into the mounting hole of the mounting part and snaps into the snap-fit ​​interface through the mounting part.

7. The pluggable wire connection mechanism according to claim 6, characterized in that, The guide sleeve is provided with a pair of snap-fit ​​interfaces, and the first body and the flexible sleeve are respectively provided with a pair of snap-fit ​​protrusions and a pair of mounting portions. The pair of snap-fit ​​interfaces, the pair of snap-fit ​​protrusions and the pair of mounting portions are all constructed to be radially opposite to each other and have different shapes and / or sizes, so as to ensure that each snap-fit ​​protrusion snaps into the mounting hole of the corresponding mounting portion and snaps into the corresponding snap-fit ​​interface through the corresponding mounting portion.

8. The pluggable wire connection mechanism according to claim 6, characterized in that, In the circumferential direction of the guide sleeve, at least one side of the mounting portion is in clearance fit with the card interface.

9. The pluggable wire connection mechanism according to claim 1, characterized in that, The flexible sleeve is interference-fitted with the inner wall of the guide sleeve by at least one arc-shaped rib; and / or, the outer wall of the first body is clearance-fitted with the inner wall of the guide sleeve.

10. The pluggable wire connection mechanism according to claim 1, characterized in that, The second body is snapped into the insertion rod, wherein one of the second body and the insertion rod is provided with a limiting rib, and the other of the second body and the insertion rod is provided with a limiting groove, so as to limit the circumferential relative position of the second body and the insertion rod by the cooperation of the limiting rib and the limiting groove.

11. The pluggable wire connection mechanism according to claim 1, characterized in that, The first body includes an axially extending intermediate section and two end sections extending from both ends of the intermediate section. The radial dimension of each end section is smaller than that of the intermediate section, and one of the end sections forms a insertion section for insertion into the second body. Wherein, after the insertion section is inserted into the second body, the end face of the second body near the first body is spaced apart from the end face of the middle section near the second body.

12. The pluggable wire connection mechanism according to claim 1, characterized in that, The first body is provided with a plurality of first terminal slots that are circumferentially evenly distributed and used to hold the plurality of first terminals respectively, and the second body is provided with a plurality of second terminal slots that are circumferentially evenly distributed and used to hold the plurality of second terminals respectively.

13. The pluggable wire connection mechanism according to claim 12, characterized in that, Each first terminal is provided with a first barb, which abuts against the first body to prevent each first terminal from dislodging from the corresponding first terminal slot, and / or each second terminal is provided with a second barb, which abuts against the second body to prevent each second terminal from dislodging from the corresponding second terminal slot.

14. The pluggable wire connection mechanism according to claim 1, characterized in that, The first connector is a male connector, and the second connector is a female connector.

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