Plug-in headrest for a car seat

Abstract

The utility model relates to the technical field of automobile seat, especially a pluggable headrest of automobile seat, including headrest guide rod and the sleeve that is cooperated with headrest guide rod, and the automobile seat includes seat framework and is located seat framework, and the fixed pipe of headrest guide rod insertion installation is arranged, a pair of first clamping hole is set up to the sleeve, and the second clamping hole that corresponds with first clamping hole is set up to the fixed pipe, the sleeve is mutually sleeved with fixed pipe, and first clamping hole and second clamping hole are opposite, and the sleeve is provided with the clamping spring of hoop at the sleeve joint of fixed pipe, and the end of clamping spring is clamped into corresponding first clamping hole and second clamping hole. The utility model installs the sleeve on the fixed pipe on seat framework through clamping spring, and the realization of this connection is simple and convenient, has low cost, does not need to increase additional structure, and can apply the headrest quick plugging function to the seat framework of corresponding platform.

Description

Technical Field

[0001] This utility model relates to the technical field of car seats, and specifically to a pluggable headrest for a car seat. Background Technology

[0002] Current user demands for car seats are becoming increasingly diverse, with headrests requiring features such as audio systems, electric adjustment, automatic adjustment, or heating. Using traditional electrical connections would prevent the headrests from being easily detached and installed. To address this, the applicant's prior Chinese patent (application number: 202410176278.8, invention title: Pluggable Connector Device and Vehicle Seat) provides a pluggable connector device that uses a sleeve assembly to achieve pluggable connection with the headrest guide rod, enabling both the corresponding electrical functions of the headrest and easy removal. However, in this pluggable connector device, the sleeve assembly is fixed by adding steel wires to the backrest frame. This increases the cost of the car seat and also adds an extra frame structure, making it less universally applicable. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pluggable headrest for car seats, which solves the problems of high cost and lack of universality caused by the addition of steel wires to fix the sleeve assembly in existing car seats.

[0004] The technical solution to achieve the above objectives is:

[0005] This utility model provides a pluggable headrest for a car seat, including a headrest guide rod and a sleeve that cooperates with the headrest guide rod. The car seat includes a seat frame and a fixing tube disposed on the seat frame for the headrest guide rod to be inserted and installed.

[0006] The sleeve is provided with a pair of first snap-fit ​​holes that are arranged opposite to each other;

[0007] The fixing tube is provided with a second snap-fit ​​hole corresponding to the first snap-fit ​​hole;

[0008] The sleeve and the fixing tube can be sleeved together, and the first snap-fit ​​hole and the second snap-fit ​​hole are aligned.

[0009] A retaining spring is provided at the connection between the sleeve and the fixed tube, and the end of the retaining spring is engaged in the corresponding first and second engagement holes.

[0010] A further improvement of the pluggable headrest of the car seat of this utility model is that a positioning block is provided on one of the sleeve and the fixing tube;

[0011] The other of the sleeve and the fixed tube is provided with a positioning groove that is adapted to the positioning block;

[0012] When the sleeve and the fixed tube are sleeved together, the positioning block is engaged in the positioning groove.

[0013] A further improvement of the pluggable headrest of the car seat of this utility model is that a first socket portion is formed on the sleeve;

[0014] A second socket is formed on the fixed tube;

[0015] When the sleeve and the fixed tube are fitted together, the first fitting part is engaged on the outside of the second fitting part, or the second fitting part is engaged on the outside of the first fitting part.

[0016] A further improvement of the pluggable headrest of the car seat of this utility model is that a guide sleeve is also inserted inside the fixing tube corresponding to the headrest guide rod. The guide sleeve is located at the upper part of the fixing tube, and the sleeve is located at the lower part of the fixing tube.

[0017] A further improvement of the pluggable headrest of the car seat of this utility model is that at least one of the guide sleeve and the fixing tube is provided with at least one pair of protrusions;

[0018] The other of the guide sleeve and the fixing tube is provided with a slot that matches the protrusion. When the guide sleeve is inserted into the fixing tube, the protrusion is locked in the slot.

[0019] A further improvement of the pluggable headrest of the car seat of this utility model is that one of the fixing tube and the guide sleeve is provided with a limiting groove;

[0020] The other of the fixed tube and the guide sleeve is provided with a limiting block that is adapted to the limiting groove;

[0021] When the guide sleeve is inserted into the fixed tube, the limiting block is engaged in the limiting groove.

[0022] A further improvement of the pluggable headrest of the car seat of this utility model is that the end of the retaining spring is formed with a retaining part, which extends into the corresponding first retaining hole and second retaining hole.

[0023] A further improvement of the pluggable headrest of the car seat of this utility model is that the retaining spring has a contact surface corresponding to the snap-fit ​​part, and the contact surface is in contact with the outer surface of the sleeve or the fixing tube.

[0024] A further improvement of the pluggable headrest of the car seat of this utility model is that the retaining spring is C-shaped.

[0025] A further improvement of the pluggable headrest of the car seat of this utility model is that one of the sleeve and the headrest guide rod is provided with a male end connector;

[0026] The sleeve and the other of the headrest guide rods are provided with a matching female end connector.

[0027] The beneficial effects of the pluggable headrest for the car seat of this utility model are as follows:

[0028] This utility model discloses a pluggable headrest for a car seat. A sleeve is installed on a fixed tube on the seat frame, and the sleeve and the fixed tube are connected by a snap-fit ​​spring. This connection is simple and convenient. The fixed tube on the seat frame is an existing structure on the seat frame. This fixed tube was originally used to insert the headrest guide rod. When installing the sleeve, it is only necessary to process snap-fit ​​holes at the corresponding positions on the fixed tube. It has the advantages of low cost, no need to add additional structures, and the ability to apply the quick-plug function of the headrest to the seat frame of the corresponding platform.

[0029] The pluggable headrest of this utility model for a car seat has a guide sleeve set on the fixing tube corresponding to the headrest guide rod. The guide sleeve achieves Z-axis (or vertical) positioning through the set protrusion and circumferential positioning through the limiting block. The installation of the guide sleeve is simple and convenient. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the pluggable headrest of the car seat of this utility model, showing the headrest guide rod and sleeve installed on the seat frame.

[0031] Figure 2 for Figure 1 A schematic diagram of the exploded decomposition structure shown.

[0032] Figure 3 for Figure 2 A magnified view of a portion of point A1 in the diagram.

[0033] Figure 4 for Figure 2 A magnified view of a portion of point A2 in the diagram.

[0034] Figure 5 for Figure 2 A magnified view of a portion of point A3 in the diagram.

[0035] Figure 6 This is a cross-sectional view of the pluggable headrest of the car seat of this utility model, in which the headrest guide rod and sleeve are installed behind the seat frame.

[0036] Figure 7 for Figure 6 A magnified view of a portion of area A4 in the diagram.

[0037] Figure 8 for Figure 6 BB section view in the middle.

[0038] Figure 9 This is a three-dimensional structural diagram of the snap ring in the pluggable headrest of the car seat according to this utility model.

[0039] Figure 10 This is a partially enlarged cross-sectional view of the connection point where the second sleeve of the fixing tube in the pluggable headrest of the car seat of this utility model is sleeved on the outside of the first sleeve and connected by the snap-fit ​​part of the snap-fit ​​spring.

[0040] Figure 11 This is a three-dimensional structural diagram of another preferred embodiment of the pluggable headrest of the automobile seat of this utility model, in which the headrest guide rod and sleeve are installed on the seat frame.

[0041] Figure 12 for Figure 11 The cross-sectional view shown is of the snap-fit ​​connection between the guide sleeve and the fixed tube. Attached image description:

[0043] Seat frame -21;

[0044] Fixed tube-22; Second snap-fit ​​hole-221; Positioning groove-222; Second sleeve part-223; Bayonet-224; Limiting groove-225;

[0045] Headrest guide rod -23;

[0046] Sleeve-24; First snap-fit ​​hole-241; Positioning block-242; First sleeve part-243;

[0047] Snap ring -25; Snap-fit ​​part -251; Mating surface -252;

[0048] Guide sleeve-26; Protrusion-261; Limiting block-262;

[0049] Male connector - 27;

[0050] Female connector-28. Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0052] See Figure 1This utility model provides a pluggable headrest for car seats, solving the installation problem of the sleeve used with pluggable headrests. Existing sleeve installation requires additional steel wires to be installed on the seat frame, increasing cost and adding extra structure, thus lacking universality. The pluggable headrest of this utility model adapts to the structure of the seat frame, and the sleeve is snapped onto a fixing tube on the seat frame using a snap-fit ​​spring. Installation and fixation of the sleeve only require a snap-fit ​​hole in the fixing tube, resulting in low cost and no need for additional structure. The structure of the pluggable headrest of this utility model for car seats will be described below with reference to the accompanying drawings.

[0053] See Figure 1 This diagram shows a three-dimensional structural schematic of the pluggable headrest of the car seat according to this utility model, in which the headrest guide rod and sleeve are installed on the seat frame. (See also...) Figure 2 , showed Figure 1 A schematic diagram of the exploded decomposition structure shown. (See attached image.) Figure 3 , showed Figure 2 A magnified view of a portion of point A1. (See below for reference.) Figures 1 to 3 The structure of the pluggable headrest of the car seat of this utility model will be described.

[0054] like Figures 1 to 3 As shown, the pluggable headrest of the car seat of this utility model includes a headrest guide rod 23 and a sleeve 24 that cooperates with the headrest guide rod 23. The car seat includes a seat frame 21 and a fixing tube 22 disposed on the seat frame 21 for the headrest guide rod 23 to be inserted and installed. The sleeve 24 has a pair of first snap-fit ​​holes 241 that are oppositely arranged. The fixing tube 22 has a second snap-fit ​​hole 221 that corresponds to the first snap-fit ​​hole 241. The sleeve 24 and the fixing tube 22 can be sleeved together. After sleeved together, the first snap-fit ​​hole 241 and the second snap-fit ​​hole 221 are aligned. A retaining spring 25 is clamped at the sleeve joint of the sleeve 24 and the fixing tube 22. The end of the retaining spring 25 is inserted into the corresponding first snap-fit ​​hole 241 and second snap-fit ​​hole 221.

[0055] In this invention, the sleeve 24 is secured to the fixing tube 22 via a snap-fit ​​spring 25. The pluggable headrest of this invention is detachably connected to the car seat via a headrest guide rod 23. When installing the pluggable headrest onto the car seat, the lower end of the headrest guide rod 23 is inserted into the fixing tube 22. The connector (either male or female) at the lower end of the headrest guide rod 23 aligns with the corresponding connector (either female or male) within the sleeve 24, thus completing the installation of the pluggable headrest. To remove the pluggable headrest from the car seat, pulling it upwards releases the connection between the connector at the lower end of the headrest guide rod 23 and the connector within the sleeve 24, allowing the headrest guide rod 23 to be pulled out of the fixing tube 22, thus removing the pluggable headrest from the car seat.

[0056] In one specific embodiment of this utility model, such as Figures 1 to 3 As shown, one of the sleeve 24 and the fixed tube 22 is provided with a positioning block 242; the other of the sleeve 24 and the fixed tube 22 is provided with a positioning groove 222 that is adapted to the positioning block 242; when the sleeve 24 and the fixed tube 22 are sleeved together, the positioning block 242 is inserted into the positioning groove 222.

[0057] The positioning block 242 and the positioning groove 222 enable quick alignment of the sleeve 24 and the fixed tube 22, and also provide circumferential positioning for the sleeve 24 and the fixed tube 22. Figures 1 to 3 In the example shown, the positioning block 242 is provided on the sleeve 24, and the positioning groove 222 is provided on the fixed tube 22.

[0058] In one specific embodiment of this utility model, such as Figure 2 and Figure 7 As shown, a first sleeve portion 243 is formed on the sleeve 24; a second sleeve portion 223 is formed on the fixed tube 22;

[0059] When the sleeve 24 and the fixed tube 22 are fitted together, the first fitting part 243 is engaged with the outside of the second fitting part 223, or in combination with... Figure 10 As shown, the second socket 223 is fitted onto the outside of the first socket 243.

[0060] Furthermore, such as Figure 1 and Figure 2 As shown, a guide sleeve 26 is also inserted inside the fixed tube 22 corresponding to the headrest guide rod 23. The guide sleeve 26 is located at the upper part of the fixed tube 22, and the sleeve 24 is located at the lower part of the fixed tube 22.

[0061] like Figure 2 and Figure 7As shown, the upper part of the sleeve 24 is fitted onto the outer side of the lower part of the fixed tube 22. The first snap-fit ​​hole 241 and the second snap-fit ​​hole 221 are aligned. The positioning block 242 is inserted into the positioning groove 222. The snap-fit ​​part 251 on the snap-fit ​​spring 25 extends into the first snap-fit ​​hole 241 and the second snap-fit ​​hole 221. The snap-fit ​​spring 25 is fitted onto the upper part of the sleeve 24. The sleeve 24 and the fixed tube 22 are connected by snap-fit ​​spring 25. The snap-fit ​​spring 25 provides Z-axis (the setting direction of the sleeve 24, or vertical) positioning for the sleeve 24.

[0062] Combination Figure 3 As shown, in this embodiment, the positioning block 242 is disposed on the upper part of the sleeve 24, and a portion of the positioning block 242 protrudes inward toward the sleeve 24. Figure 2 As shown, the positioning groove 222 is located at the lower end of the fixed tube 22, and then combined with... Figure 1 As shown, when the sleeve 24 is fitted onto the fixed tube 22, the positioning block 242 is inserted into the positioning groove 222. The top of the positioning block 242 is in close contact with the corresponding groove wall of the positioning groove 222. The cooperation between the positioning block 242 and the positioning groove 222 restricts the relative rotation between the sleeve 24 and the positioning tube 22.

[0063] exist Figure 10 and Figure 11 In the illustrated embodiment, the first sleeve portion 243 formed at the top of the sleeve 24 extends into the second sleeve portion 223 formed at the bottom of the fixed tube 22. The positioning groove 222 is formed at the lower end of the second sleeve portion 223. The positioning block 242 is formed at the bottom of the first sleeve portion 243, and the positioning block 242 protrudes outward from the outer surface of the first sleeve portion 243. When the first sleeve portion 243 is inserted into the second sleeve portion 223, the positioning block 242 is engaged in the positioning groove 222. The top of the positioning block 242 is in close contact with the corresponding groove wall of the positioning groove 222. The cooperation between the positioning block 242 and the positioning groove 222 restricts the relative rotation between the sleeve 24 and the positioning tube 22.

[0064] Furthermore, such as Figure 1 , Figure 2 , Figures 4 to 6 As shown, one of the guide sleeve 26 and the fixing tube 22 is provided with at least one pair of protrusions 261; the other of the guide sleeve 26 and the fixing tube 22 is provided with a buckle 224 that matches the protrusion 261. When the guide sleeve 26 is inserted into the fixing tube 22, the protrusion 261 is engaged in the buckle 224.

[0065] like Figures 11 to 12 In the example shown, a protrusion 261 is provided on the outer wall of the guide sleeve 26, and a slot 224 is provided on the fixing tube 22 corresponding to the protrusion 261. When the guide sleeve 26 is inserted into the fixing tube 22, the protrusion 261 is engaged in the slot 224. The protrusion 261 enables Z-axis positioning of the guide sleeve 26. Or as... Figure 6 In the example shown, a protrusion 261 is provided on the outer wall of the guide sleeve 26. When the guide sleeve 26 is inserted into the fixed tube 22, the protrusion 261 is engaged at the bottom end of the fixed tube 22.

[0066] Figure 1 and Figure 11 Two different types of seat frames are shown 21. Figure 1 The length of the fixing tube 22 on the seat frame 21 is less than Figure 11 The length of the fixing tube 22 on the seat frame 21 is... Figure 1 In this configuration, a portion of the lower part of the guide sleeve 26 extends from the lower end of the fixed tube 22. At this time, the sleeve 24 can be designed to fit snugly against the outside of the fixed tube 22. Figure 11 In this case, the lower part of the guide sleeve 26 is placed inside the fixed tube 22 and is a certain distance from the bottom end of the fixed tube 22. At this time, the sleeve 24 can be designed to be inserted into the inside of the fixed tube 22.

[0067] Furthermore, such as Figure 1 , Figure 2 and Figure 5 As shown, one of the fixing tube 22 and the guide sleeve 26 is provided with a limiting groove 225; the other of the fixing tube 22 and the guide sleeve 26 is provided with a limiting block 262 that matches the limiting groove 225; when the guide sleeve 26 is inserted into the fixing tube 22, the limiting block 262 is engaged within the limiting groove 225. Figure 1 In the example shown, the limiting groove 225 is located at the top of the fixed tube 22, and the limiting block 262 is located on the guide sleeve 26.

[0068] The limiting groove 225 extends downward from the top of the fixed tube 22, and the limiting block 262 protrudes outward from the outer surface of the guide sleeve 26. Through the cooperation of the limiting block 262 and the limiting groove 225, the relative rotation between the guide sleeve 26 and the fixed tube 22 is restricted.

[0069] In one specific embodiment of this utility model, such as Figure 8 and Figure 9 As shown, the end of the snap ring 25 has a snap-fit ​​portion 251, which extends into the corresponding first snap-fit ​​hole 241 and second snap-fit ​​hole 221.

[0070] Furthermore, the retaining ring 25 is C-shaped, and two locking portions 251 are formed at the two ends of the retaining ring 25, with the two locking portions 251 arranged opposite to each other.

[0071] Furthermore, the retaining spring 25 has a contact surface 252 formed at the corresponding snap-fit ​​portion 251, and the contact surface 252 is in contact with the outer surface of the sleeve 24 or the fixing tube 22. When the sleeve 24 is snapped onto the outside of the fixing tube 22, the contact surface 252 is in contact with the outer surface of the sleeve 24; when the sleeve 24 is nested inside the fixing tube 22, the contact surface 252 is in contact with the outer surface of the fixing tube 22.

[0072] In a preferred embodiment, the fixing tube 22 is a round tube, and correspondingly, the sleeve 24 is also a round cylinder, and the retaining spring 25 is semi-circular. Alternatively, the fixing tube 22 is a square tube, and correspondingly, the sleeve 24 is also a square cylinder, and the retaining spring 25 is semi-square.

[0073] In one specific embodiment of this utility model, such as Figure 2 and Figure 6 As shown, one of the sleeve 24 and the headrest guide rod 23 is provided with a male connector 27, and the other of the sleeve 24 and the headrest guide rod 23 is provided with a matching female connector 28. The male connector 27 and the female connector 28 can automatically lock and unlock. When installing the headrest, the headrest guide rod 23 is inserted into the guide sleeve 26 and then into the sleeve 24. The male connector 27 and the female connector 28 are aligned and automatically locked, realizing the electrical connection between the headrest and the power mechanism set inside the car seat (which can be the electrical connection of the electric mechanism, such as the electrical connection of the wire connector, or the sealed connection of the air supply line used by the pneumatic mechanism). When removing the headrest, the headrest is pulled upward, the headrest guide rod 23 is moved upward under force, the male connector 27 and the female connector 28 are automatically unlocked and separated, and the headrest guide rod 23 is pulled out from the guide sleeve 26, realizing the removal of the headrest.

[0074] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A pluggable headrest for a car seat, comprising a headrest guide rod (23) and a sleeve (24) cooperating with the headrest guide rod (23), wherein the car seat comprises a seat frame (21) and a fixing tube (22) disposed on the seat frame (21) for inserting and installing the headrest guide rod (23); characterized in that, The sleeve (24) is provided with a pair of first snap-fit ​​holes (241) that are opposite to each other; The fixing tube (22) is provided with a second snap-fit ​​hole (221) corresponding to the first snap-fit ​​hole (241); The sleeve (24) and the fixing tube (22) can be sleeved together, and the first snap-fit ​​hole (241) and the second snap-fit ​​hole (221) are aligned. A retaining ring (25) is provided at the connection between the sleeve (24) and the fixed tube (22), and the end of the retaining ring (25) is inserted into the corresponding first retaining hole (241) and second retaining hole (221).

2. The pluggable headrest for a car seat as described in claim 1, characterized in that, One of the sleeve (24) and the fixed tube (22) is provided with a positioning block (242); The other of the sleeve (24) and the fixed tube (22) is provided with a positioning groove (222) that is adapted to the positioning block (242); When the sleeve (24) and the fixed tube (22) are sleeved together, the positioning block (242) is inserted into the positioning groove (222).

3. The pluggable headrest for a car seat as described in claim 1, characterized in that, A first sleeve portion (243) is formed on the sleeve (24); A second socket (223) is formed on the fixed tube (22); When the sleeve (24) and the fixed tube (22) are connected to each other, the first sleeve part (243) is fitted on the outside of the second sleeve part (223), or the second sleeve part (223) is fitted on the outside of the first sleeve part (243).

4. The pluggable headrest for a car seat as described in claim 1, characterized in that, A guide sleeve (26) is also inserted inside the fixed tube (22) corresponding to the headrest guide rod (23). The guide sleeve (26) is located at the upper part of the fixed tube (22), and the sleeve (24) is located at the lower part of the fixed tube (22).

5. The pluggable headrest for a car seat as described in claim 4, characterized in that, At least one pair of protrusions (261) are provided on the guide sleeve (26) and the fixing tube (22); The other of the guide sleeve (26) and the fixing tube (22) is provided with a slot (224) that matches the protrusion (261). When the guide sleeve (26) is inserted into the fixing tube (22), the protrusion (261) is locked in the slot (224).

6. The pluggable headrest for a car seat as described in claim 4, characterized in that, One of the fixed tube (22) and the guide sleeve (26) is provided with a limiting groove (225); The other of the fixed tube (22) and the guide sleeve (26) is provided with a limiting block (262) that is adapted to the limiting groove (225); When the guide sleeve (26) is inserted into the fixed tube (22), the limiting block (262) is engaged in the limiting groove (225).

7. The pluggable headrest for a car seat as described in claim 1, characterized in that, The end of the snap ring (25) is formed with a snap-fit ​​portion (251), which extends into the corresponding first snap-fit ​​hole (241) and second snap-fit ​​hole (221).

8. The pluggable headrest for a car seat as described in claim 7, characterized in that, The snap ring (25) has a contact surface (252) formed at the corresponding snap-fit ​​part (251), and the contact surface (252) is in contact with the outer surface of the sleeve (24) or the fixing tube (22).

9. The pluggable headrest for a car seat as described in claim 1, characterized in that, The snap ring (25) is C-shaped.

10. The pluggable headrest for a car seat as described in claim 1, characterized in that, One of the sleeve (24) and the headrest guide rod (23) is provided with a male end connector (27); The sleeve (24) and the other of the headrest guide rod (23) are provided with a matching female end connector (28).

Images