Plug structure of detachable music headrest

Abstract

The utility model provides a plug structure of a detachable music headrest, and belongs to the technical field of automobile headrests. The automobile headrest solves the problem that when an existing automobile headrest is disassembled, an electric connecting wire harness is prone to being pulled apart. A plug structure of a detachable music headrest comprises a fixed base arranged on an automobile seat and a headrest rod arranged on the headrest, an insertion hole is formed in the fixed base, the headrest rod can be inserted into the insertion hole, a first connector is arranged on the headrest rod, a second connector detachably connected with the first connector is arranged in the insertion hole in a sliding mode, and the second connector is connected with the first connector in a sliding mode. A positioning structure used for positioning the second connector moving in place is arranged between the second connector and the fixed base. When the headrest rod is detached, the second connector moves along with the headrest rod, the problem that the electric connecting wire harness is pulled apart is avoided, and meanwhile the headrest rod has the advantages of being easy and convenient to install and detach and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile headrests and relates to a connector structure of a detachable music 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 the seats to the rear position after removing the headrests so that the backrests and the cushions of the second row are flush, thereby forming a bed for users to rest.

[0003] However, for seats with music headrests, the music headrests are equipped with electrical connection harnesses that can be electrically connected to the wiring harnesses on the car seats. During the disassembly process of the headrests, the electrical connection harnesses may be pulled, causing the electrical connection harnesses to break. There is also the possibility that the wiring harnesses may retract into the inside of the seat due to the elasticity of being pulled, resulting in difficulty in finding the wiring harnesses on the seat when the music headrest is installed again. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes a connector structure of a detachable music headrest with good use effect.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The plug connector structure of a detachable music headrest comprises a fixed base arranged on a car seat and a headrest rod arranged on the headrest, the fixed base is provided with a plug hole, the headrest rod can be plugged into the plug hole, the headrest rod is provided with a first joint, a second joint detachably connected to the first joint is slidably provided in the plug hole, and a positioning structure for positioning the second joint moved into place is provided between the second joint and the fixed base.

[0007] The speaker in the headrest is connected to the first connector through a wire, and the second connector is connected to the power connection line. When the first connector is connected to the second connector, the power connection line is electrically connected to the speaker. When the headrest rod moves in the plug hole, it will drive the second connector to move together. At this time, the power connection line is always connected to the second connector. After moving into place, the positioning structure can position the moved second connector. When the headrest is removed from the seat, the second connector moves to the opening of the plug hole, which is convenient for connecting the first connector and the second connector when installing the headrest. The first connector and the second connector have a good connection effect, and there will be no disconnection. At the same time, it has a good use effect.

[0008] In the above-mentioned detachable music headrest connector structure, the positioning structure includes a mounting hole arranged in the second joint, a spring arranged in the mounting hole and push rods arranged at both ends of the spring, the mounting hole extends radially along the plug-in hole, and the two push rods are pressed against the inner wall of the plug-in hole under the action of the spring elastic force.

[0009] Under the action of the spring force, the end of the push rod away from the spring presses against the inner wall of the plug-in hole, and the friction between the push rod and the inner wall of the plug-in hole is smaller than the connection force between the first connector and the second connector, thereby preventing the first connector and the second connector from being actively disengaged due to excessive friction between the push rod and the inner wall of the plug-in hole when the headrest rod moves.

[0010] In the connector structure of the detachable music headrest, the inner wall of the plug hole is provided with two axially extending guide grooves, which are arranged opposite to each other, and one end of one push rod away from the spring is inserted into one of the guide grooves, and the other end of the push rod away from the spring is inserted into the other guide groove. The guide groove guides the push rod and can limit the circumferential rotation of the second connector along the axis of the plug hole.

[0011] In the connector structure of the above-mentioned detachable music headrest, a stop protrusion is provided in each of the guide grooves, and the two stop protrusions are arranged opposite to each other. The inner side of the stop protrusion has an inclined first guide surface, and the outer side of the stop protrusion has an inclined second guide surface, and the inclination of the first guide surface is smaller than the inclination of the second guide surface.

[0012] When the second joint moves outward with the headrest rod, the push rod easily passes over the stop protrusion under the action of the first guide surface and moves to the outside of the stop protrusion. At this time, the second joint can be prevented from moving into the insertion hole under the action of the two opposite stop protrusions. After the first joint and the second joint are connected, the push rod easily passes over the stop protrusion under the action of the second guide surface and moves to the inside of the stop protrusion.

[0013] In the above-mentioned detachable music headrest connector structure, a limit stop edge is provided at the outlet of the plug hole, the stop protrusion is located on the inner side of the limit stop edge, and the second connector is provided with an anti-slip portion that can be limited by the limit stop edge on the inner side of the limit stop edge.

[0014] When the headrest rod is pulled outward, the second joint moves outward together with the first joint, the push rod can easily pass over the stop protrusion, and then the second joint is limited under the action of the anti-slip portion and the limit stop edge to prevent the second structure from falling out of the plug hole.

[0015] In the above-mentioned detachable music headrest connector structure, the first connector includes a female plug and a static contact piece arranged in the female plug, the second connector includes a male plug that can be plugged into the female plug and a movable contact piece arranged on the male plug, the male plug is fixed on the anti-detachment part, and the positioning structure is arranged in the anti-detachment part.

[0016] The stationary contact piece and the moving contact piece are made of conductive materials. The stationary contact piece is connected to the speaker through a wire, the power connection line is connected to the moving contact piece, and the moving contact piece is electrically connected to the stationary contact piece when the male plug is inserted into the female plug barrel. In order to improve the connection effect, the stationary contact pieces are arranged in a plurality and distributed in a circular array in the female plug barrel, and the number of the moving contact pieces is set to be equal to the number of the stationary contact pieces. When the male plug is inserted into the female plug barrel, the stationary contact piece is electrically connected to the moving contact piece opposite thereto.

[0017] In the above-mentioned plug structure of the detachable music headrest, a circuit board is provided on the anti-detachment part, and the pins of the movable contact piece are plugged into the circuit board. The power connection line is connected to the circuit board, and the plane where the circuit board is located is perpendicular to the extension direction of the movable contact piece, so that the pins of the movable contact piece can be plugged into the circuit board conveniently.

[0018] In the above-mentioned plug structure of the detachable music headrest, a rear cover is buckled on the anti-detachment part, and the circuit board is arranged between the rear cover and the anti-detachment part. The rear cover protects the circuit board and prevents the circuit board from being exposed to the outside.

[0019] Compared with the prior art, the plug structure of the detachable music headrest has the following advantages: the first connector and the second connector have a good connection effect, and there will be no disconnection. At the same time, it has a good use effect. When the first connector moves outward, it can drive the second connector to move outward together, and ensure that the first connector and the second connector are always in an electrically connected state. When the headrest rod is removed, the male plug exposes the plug hole, which is convenient for connecting the first connector and the second connector when installing the headrest. It can meet the different needs of users, and the disassembly and installation are simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the detachable music headrest plug structure.

[0021] Figure 2 It is a structural schematic diagram of the second joint provided by the utility model.

[0022] Figure 3 It is a structural schematic diagram of the first joint provided by the utility model.

[0023] In the figure, 1. fixed base; 2. headrest rod; 3. mounting hole; 4. spring; 5. push rod; 6. guide groove; 7. stop protrusion; 8. first guide surface; 9. second guide surface; 10. limit stop edge; 11. anti-slip portion; 12. female plug; 13. static contact piece; 14. male plug; 15. moving contact piece; 16. circuit board; 17. back cover. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1 The plug connector structure of the detachable music headrest shown in the figure includes a fixed base 1 arranged on the car seat and a headrest rod 2 arranged on the headrest. The fixed base 1 is provided with a plug hole extending up and down, and the headrest rod 2 can be plugged into the plug hole. A first connector is provided on the headrest rod 2, and a second connector detachably connected to the first connector is slidably provided in the plug hole. A positioning structure for positioning the second connector that moves into place is provided between the second connector and the fixed base 1. The speaker in the headrest is connected to the first connector through a wire, and the wire is passed through the headrest rod 2. The second connector is connected to the power connection line. When the first connector is connected to the second connector, the power connection line is electrically connected to the speaker.

[0026] When the headrest rod 2 moves in the plug hole, it will drive the second connector to move together. At this time, the power connection line is always connected to the second connector. After moving into place, the positioning structure can position the moved second connector. When the headrest is removed from the seat, the second connector moves to the opening of the plug hole, which facilitates the connection between the first connector and the second connector when installing the headrest. The first connector and the second connector have a good connection effect, and there will be no disconnection, and they have a good use effect.

[0027] like Figure 3 As shown, the first connector includes a female plug 12 and a stationary contact piece 13 disposed in the female plug 12. Figure 2 As shown, the second connector includes a male plug 14 that can be plugged into the female plug 12 and a moving contact piece 15 arranged on the male plug 14. The inner end of the male plug 14 is provided with an anti-detachment portion 11, and a positioning structure is arranged in the anti-detachment portion 11. The female plug 12 is inserted into the headrest rod 2 and extends axially along the headrest rod 2. The male plug 14 is coaxially arranged in the plug hole. The static contact piece 13 and the moving contact piece 15 are made of conductive metal materials. The static contact piece 13 is connected to the speaker through a wire, and the power connection line is connected to the moving contact piece 15. When the male plug 14 is inserted into the female plug 12, the moving contact piece 15 is electrically connected to the static contact piece 13. Figure 3 As shown, the static contact pieces 13 are arranged in a plurality and distributed in an annular array in the female insert 12, as shown in FIG. Figure 2 As shown, the number of the moving contact pieces 15 is set to be equal to the number of the stationary contact pieces 13. When the male plug 14 is inserted into the female plug sleeve 12, the stationary contact piece 13 is electrically connected to the moving contact piece 15 opposite thereto.

[0028] like Figure 1 and Figure 2As shown, the inner end of the anti-detachment part 11 is buckled with a back cover 17, and a circuit board 16 is arranged between the back cover 17 and the anti-detachment part 11, and the pins of the movable contact piece 15 are plugged into the circuit board 16. The power connection line is connected to the circuit board 16, and the plane where the circuit board 16 is located is perpendicular to the extension direction of the movable contact piece 15, so that the pins of the movable contact piece 15 can be plugged into the circuit board 16 conveniently.

[0029] like Figure 1 and Figure 2 As shown, the positioning structure includes a mounting hole 3 provided in the second joint, a spring 4 provided in the mounting hole 3, and push rods 5 provided at both ends of the spring 4. The mounting hole 3 extends radially along the plug hole, and the two push rods 5 are pressed against the inner wall of the plug hole under the elastic force of the spring 4. Under the elastic force of the spring 4, the end of the push rod 5 away from the spring 4 is pressed against the inner wall of the plug hole, and the friction between the push rod 5 and the inner wall of the plug hole is smaller than the connection force between the first connector and the second connector, so as to prevent the first joint and the second joint from being actively disengaged due to excessive friction between the push rod 5 and the inner wall of the plug hole when the headrest rod 2 moves.

[0030] like Figure 1 As shown, the inner wall of the plug hole is provided with two axially extending guide grooves 6, and the two guide grooves 6 are arranged opposite to each other. One end of one push rod 5 away from the spring 4 is inserted into one of the guide grooves 6, and the other end of the push rod 5 away from the spring 4 is inserted into the other guide groove 6. The guide grooves 6 guide the push rod 5 and at the same time can limit the circumferential rotation of the second connector along the axis of the plug hole.

[0031] like Figure 1 As shown, each guide groove 6 is provided with a stop protrusion 7, and the two stop protrusions 7 are arranged opposite to each other. The inner side of the stop protrusion 7 has an inclined first guide surface 8, and the outer side of the stop protrusion 7 has an inclined second guide surface 9. The first guide surface 8 intersects with the second guide surface 9, and the inclination of the first guide surface 8 is smaller than the inclination of the second guide surface 9.

[0032] When the second joint moves outward with the headrest rod 2, the push rod 5 easily passes over the stop protrusion 7 under the action of the first guide surface 8 and then moves to the outside of the stop protrusion 7. At this time, the second joint can be prevented from moving into the insertion hole under the action of the two opposite stop protrusions 7. After the first joint and the second joint are connected, the push rod 5 easily passes over the stop protrusion 7 under the action of the second guide surface 9 and then moves to the inside of the stop protrusion 7.

[0033] like Figure 1As shown, a limit stop edge 10 is provided at the outlet of the plug hole, the stop protrusion 7 is located on the inner side of the limit stop edge 10, and the anti-slip portion 11 on the second joint can be limited by the limit stop edge 10 on the inner side of the limit stop edge 10. When the headrest rod 2 is pulled outward, the second joint moves outward together with the first joint, and the top rod 5 can easily pass over the stop protrusion 7, and then the second joint is limited by the anti-slip portion 11 and the limit stop edge 10 to prevent the second structure from slipping out of the plug hole.

[0034] When connecting, align the female plug 12 with the male plug 14, and then press the headrest from top to bottom to insert the headrest rod 2 into the plug hole. During insertion, the moving contact piece 15 is electrically connected to the static contact piece 13, and then drives the male plug 14 to move inward together. When the headrest rod 2 is inserted into place, the male plug 14 is positioned at the current position under the action of the spring 4 and the two push rods 5.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A plug structure for a detachable music headrest, comprising a fixed base (1) arranged on a car seat and a headrest rod (2) arranged on the headrest, wherein the fixed base (1) is provided with a plug hole, and the headrest rod (2) can be plugged into the plug hole, characterized in that: The headrest rod (2) is provided with a first joint, a second joint detachably connected to the first joint is slidably provided in the plug hole, and a positioning structure for positioning the second joint that moves into position is provided between the second joint and the fixed base (1).

2. The plug structure of the detachable music headrest according to claim 1, characterized in that: The positioning structure comprises a mounting hole (3) arranged in the second joint, a spring (4) arranged in the mounting hole (3), and push rods (5) arranged at both ends of the spring (4); the mounting hole (3) extends radially along the plug-in hole, and the two push rods (5) are pressed against the inner wall of the plug-in hole under the elastic force of the spring (4).

3. The plug structure of the detachable music headrest according to claim 2, characterized in that: The inner wall of the plug hole is provided with two axially extending guide grooves (6), the two guide grooves (6) are arranged opposite to each other, one end of one push rod (5) away from the spring (4) is inserted into one of the guide grooves (6), and the other end of the other push rod (5) away from the spring (4) is inserted into the other guide groove (6).

4. The plug structure of the detachable music headrest according to claim 3 is characterized in that: A stop protrusion (7) is provided in each guide groove (6), and the two stop protrusions (7) are arranged opposite to each other. The inner side of the stop protrusion (7) has an inclined first guide surface (8), and the outer side of the stop protrusion (7) has an inclined second guide surface (9), and the inclination of the first guide surface (8) is smaller than the inclination of the second guide surface (9).

5. The plug structure of the detachable music headrest according to claim 4, characterized in that: A limit stop edge (10) is provided at the outlet of the plug hole, the stop protrusion (7) is located on the inner side of the limit stop edge (10), and the second connector is provided with an anti-slip portion (11) which can be limited by the limit stop edge (10) on the inner side of the limit stop edge (10).

6. The plug structure of the detachable music headrest according to claim 5, characterized in that: The first connector comprises a female plug (12) and a stationary contact piece (13) arranged in the female plug (12); the second connector comprises a male plug (14) which can be plugged into the female plug (12) and a moving contact piece (15) arranged on the male plug (14); the male plug (14) is fixed on the anti-detachment part (11); and the positioning structure is arranged in the anti-detachment part (11).

7. The plug structure of the detachable music headrest according to claim 6, characterized in that: The anti-detachment portion (11) is provided with a circuit board (16), and the plug pins of the movable contact piece (15) are plugged into the circuit board (16).

8. The plug structure of the detachable music headrest according to claim 7, characterized in that: A rear cover (17) is buckled onto the anti-detachment portion (11), and the circuit board (16) is arranged between the rear cover (17) and the anti-detachment portion (11).

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