Novel guide sleeve capable of being unlocked through downward pressing

Abstract

The utility model relates to a novel guide sleeve unlocked through downward pressing. The novel guide sleeve comprises a headrest guide sleeve body, an unlocking button, a reset spring and a locking pin. Wherein the headrest guide sleeve body comprises a columnar assembly part and a button installation part, a sliding groove is formed in the side face of the columnar assembly part, and a locking pin installation groove is formed in the circumferential direction of the columnar assembly part; the unlocking button comprises a pressing part and a sliding part arranged in the sliding groove, the pressing part is arranged in the button mounting part, a reset spring is arranged between the pressing part and the button mounting part, an inclined driving part is arranged on the side, close to the headrest rod locking groove, of the lower end of the sliding part, and the inclined driving part is used for driving the locking pin to be away from the headrest rod locking groove after moving downwards; the locking pin is arranged in the locking pin mounting groove, and the guide sleeve presses the unlocking button downwards to open Z-direction limiting of the headrest rod, so that the headrest is disassembled; and when the unlocking button stops being pressed, Z-direction limiting of the headrest rod can be automatically recovered, so that the integrated seat headrest is detachable, and the maintenance cost in the production process or in the later period is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle seats, and relates to the installation and fixation of headrests, in particular to a novel guide sleeve that is unlocked by pressing downwards. Background Art

[0002] Currently, the headrest rods of the integrated seat headrests on the market are all welded to the seat frame integrally. During the production process or later maintenance, if the headrest is damaged, the entire frame needs to be replaced, greatly increasing the maintenance cost. The headrest rods of the existing split headrests are installed on the seat frame in a detachable manner; however, its unlocking button is set on the side (Y direction) and protrudes from the headrest surface, which is not applicable to the integrated seat headrests. Therefore, it is necessary to design a guide sleeve structure applicable to the integrated seat headrests. Summary of the Invention

[0003] In view of the above technical problems and disadvantages, the purpose of the utility model is to provide a novel guide sleeve that is unlocked by pressing downwards. Pressing down the unlocking button of the guide sleeve can open the Z-direction limit on the headrest rod and remove the headrest; stopping pressing the unlocking button can automatically restore the Z-direction limit on the headrest rod, enabling the integrated seat headrest to be detachable and greatly reducing the production cost or later maintenance cost.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A novel guide sleeve that is unlocked by pressing downwards, comprising a headrest guide sleeve body, an unlocking button, a return spring, and a locking pin; wherein, the headrest guide sleeve body includes a columnar assembly part installed in the sleeve of the backrest frame and a button installation part arranged at the upper end of the columnar assembly part. A first headrest rod assembly hole is provided at the axial center position of the columnar assembly part, and a sliding groove is provided on the side. At least one insertion hole is provided in the Z direction at a position far from the sliding groove and close to the first headrest rod assembly hole. A locking pin installation groove is provided along the circumferential direction at a position close to the middle on the outer side wall of the columnar assembly part, and one side of the locking pin installation groove is communicated with the first headrest rod assembly hole; the button installation part is a groove-shaped structure, and an avoidance notch is provided on the side of the sliding groove;

[0006] The unlocking button includes a pressing part arranged within the button mounting part, a sliding part arranged at the bottom of the pressing part and within the sliding groove, and a plugging part arranged at the bottom of the pressing part and inserted into the plugging hole. A return spring is arranged between the pressing part and the button mounting part. A second headrest rod assembly hole is provided at a position opposite to the first headrest rod assembly hole; a lower limit part is arranged on the side of the sliding part near the pressing part, and an upper limit part is arranged at the lower end of the sliding part. The lower limit part and the upper limit part cooperate to limit the Z-direction movement stroke of the unlocking button. An inclined driving part is arranged at the lower end of the sliding part on the side close to the headrest rod locking groove. After the inclined driving part moves downward, it is used to drive the locking pin away from the headrest rod locking groove.

[0007] The locking pin is arranged within the locking pin mounting groove, with one end fixed and the other end moving along the Y-direction relative to the columnar assembly part. The moving end of the locking pin extends into the first headrest rod assembly hole and cooperates with the headrest rod locking groove to lock and fix the headrest rod.

[0008] Preferably, two mounting posts are arranged at the bottom of the pressing part, and the upper ends of the two return springs are respectively mounted and fixed on the two mounting posts. The lower ends of the return springs are in contact with the bottom surface of the button mounting part.

[0009] Preferably, an X-direction limit part is arranged on the front side of the columnar assembly part near the sliding groove, and the lower end of the sliding part is arranged inside the X-direction limit part.

[0010] Preferably, a Y-direction limit part is arranged on the side of the columnar assembly part outside the locking pin mounting groove.

[0011] Preferably, two symmetrical claws are arranged on the outer side wall of the columnar assembly part near the upper end. Grooves are provided on the upper surface and both sides of the two claws.

[0012] Preferably, the moving end of the locking pin is in a rod-shaped structure.

[0013] Advantages and beneficial effects of the present utility model:

[0014] (1) The guide sleeve provided by the present utility model has a simple structure, has a Z-direction locking function, and is a push-button, which is convenient to operate. When the headrest needs to be replaced due to damage during the production process or later maintenance, it is not necessary to replace the entire skeleton, but only the headrest, which greatly reduces the maintenance cost.

[0015] (2) There are two claws at the upper end of the headrest guide sleeve body provided by the present utility model. Grooves are provided on the upper surface and the left and right sides of the claws, which increases the deformation tension of the guide sleeve claws, facilitates plugging and unplugging, and is convenient for installation and disassembly. Moreover, the headrest guide sleeve body is made of PP material, which also realizes the lightweight of parts and reduces the cost.

[0016] (3) The present utility model mainly realizes the limiting and fixing function through the locking pin in the guide sleeve and the unlocking button, restricting the Z-direction movement of the headrest rod; during operation, press the unlocking button downward to push the locking pin out of the locking groove of the headrest rod, and the headrest rod is released from the Z-direction limit to achieve Z-direction movement; when closing, remove the Z-direction force, and the locking pin is pushed into the locking groove of the headrest rod by the action of internal stress, restricting the Z-direction movement of the headrest rod, and the operation is simple. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Isometric view of the new guide sleeve for unlocking by pressing downward of the present utility model Figure 1 ;

[0019] Figure 2 Isometric view of the new guide sleeve for unlocking by pressing downward of the present utility model Figure 2 ;

[0020] Figure 3 Perspective view of the new guide sleeve for unlocking by pressing downward of the present utility model;

[0021] Figure 4 Isometric view of the headrest guide sleeve body of the present utility model;

[0022] Figure 5 Isometric view of the unlocking button of the present utility model Figure 1 ;

[0023] Figure 6 Isometric view of the unlocking button of the present utility model Figure 2 ;

[0024] Figure 7 Isometric view of the unlocking button of the present utility model Figure 3 ;

[0025] Figure 8 Schematic diagram of the locking pin of the present utility model;

[0026] Reference numerals: headrest guide sleeve body 1, unlocking button 2, return spring 3, locking pin 4, cylindrical assembly part 11, button mounting part 12, pressing part 21, sliding part 22, plugging part 23, inclined driving part 24, first headrest rod assembly hole 111, sliding groove 112, plugging hole 113, locking pin mounting groove 114, X-direction limiting part 115, Y-direction limiting part 116, claw 117, avoiding notch 121, second headrest rod assembly hole 211, mounting post 212, lower limiting part 221, upper limiting part 222. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this application is normally placed. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0029] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] Such as Figures 1 to 8As shown in the figure, this embodiment provides a new type of guide sleeve that can be unlocked by pressing downwards, including a headrest guide sleeve body 1, an unlocking button 2, a return spring 3, and a locking pin 4. Among them, the headrest guide sleeve body 1 includes a columnar assembly part 11 installed in the backrest frame sleeve and a button installation part 12 arranged at the upper end of the columnar assembly part. A first headrest rod assembly hole 111 is provided at the axial center position of the columnar assembly part 11, and a sliding groove 112 is provided on the side. At least one insertion hole 113 (two insertion holes 113 are provided in this embodiment) is provided in the Z direction at a position far from the sliding groove 112 and close to the first headrest rod assembly hole 111. A locking pin installation groove 114 is provided circumferentially on the outer side wall of the columnar assembly part 11 near the middle, and one side of the locking pin installation groove 114 communicates with the first headrest rod assembly hole 111. The button installation part 12 is a groove-shaped structure, and an avoidance notch 121 is provided on the side of the sliding groove 112.

[0031] The unlocking button 2 includes a pressing part 21 arranged in the button installation part 12, a sliding part 22 arranged at the bottom of the pressing part and arranged in the sliding groove 112, and an insertion part 23 arranged at the bottom of the pressing part and inserted into the insertion hole 113. A return spring 3 is arranged between the pressing part 21 and the button installation part 12, and a second headrest rod assembly hole 211 is provided at a position opposite to the first headrest rod assembly hole 111. Lower limit parts 221 are provided on both sides of the sliding part 22 near the pressing part 21, and an upper limit part 222 is provided at the lower end of the sliding part 22. The lower limit part 221 and the upper limit part 222 cooperate to limit the Z-direction movement stroke of the unlocking button 2. An inclined driving part 24 is provided on the lower end of the sliding part 22 near one side of the headrest rod locking groove. After the inclined driving part 24 moves downwards, it is used to drive the locking pin 4 to move away from the headrest rod locking groove.

[0032] The locking pin 4 is arranged in the locking pin installation groove 114, one end is fixed, and the other end moves along the Y direction relative to the columnar assembly part 111. The locking pin 4 at the moving end extends into the first headrest rod assembly hole 111 and cooperates with the headrest rod locking groove to lock and fix the headrest rod.

[0033] Further, as Figure 6 shown, in this embodiment, two installation columns 212 are provided at the bottom of the pressing part 21. The upper ends of the two return springs 3 are respectively installed and fixed on the two installation columns 212, and the lower ends of the return springs 3 are in contact with the bottom surface of the button installation part 12.

[0034] Further, as Figure 2 、 Figure 4As shown in the figure, in this embodiment, an X-direction limiting portion 115 is provided at the front side of the columnar assembly portion 11 near the sliding groove 112, and the lower end of the sliding portion 22 is disposed inside the X-direction limiting portion 115; a Y-direction limiting portion 116 is provided on the side surface of the columnar assembly portion 11 outside the locking pin installation groove 114, and the Y-direction limiting portion 116 is used to limit the moving stroke of the locking pin 4.

[0035] Further, as Figure 4 shown in the figure, in this embodiment, two symmetrical claws 117 are provided at a position near the upper end of the outer wall of the columnar assembly portion 11. Slots (not marked) are provided on the upper surface and the left and right sides of the two claws 117 to increase the deformation tension of the claws, so as to facilitate insertion and extraction, and facilitate installation and disassembly.

[0036] Further, as Figure 8 shown in the figure, in this embodiment, the mobile end of the locking pin 4 is of a rod-shaped structure.

[0037] In this embodiment, the headrest guide sleeve body 1 and the unlocking button 2 are both of an integral structure. The headrest guide sleeve body 1 is made of PP material, which also realizes the lightweight of parts and reduces costs.

[0038] When using the guide sleeve of the present utility model, first fix the guide sleeve in the backrest frame sleeve, and then insert the headrest rod along the second headrest rod assembly hole 211 into the first headrest rod assembly hole 111 of the columnar assembly portion 11. Under normal conditions, the locking pin 4 at the mobile end extends into the first headrest rod assembly hole 111 and cooperates with the headrest rod locking groove to lock and fix the headrest rod; when it is necessary to repair the headrest during the production process or later, only need to press down the unlocking button 2. At this time, the sliding portion 22 drives the inclined drive portion 24 to move downward. Under the action of the inclined drive portion 24, the locking pin 4 at the mobile end gradually moves away from the headrest rod locking groove, and the Z-direction limit on the headrest rod is opened. At this time, the headrest can be smoothly removed for repair. After the repair, the headrest is assembled and the cover is sleeved.

[0039] The above is the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A new type of guide sleeve unlocked by downward pressing, characterized in that, It includes a headrest guide sleeve body, an unlocking button, a return spring, and a locking pin; wherein, the headrest guide sleeve body includes a columnar assembly portion installed in the sleeve of the backrest skeleton, and a button installation portion provided at the upper end of the columnar assembly portion. A first headrest rod assembly hole is provided at the axial center position of the columnar assembly portion, a sliding groove is provided on the side, at least one insertion hole is provided along the Z direction at a position far from the sliding groove, and a locking pin installation groove is provided circumferentially on the outer side wall of the columnar assembly portion near the middle. One side of the locking pin installation groove communicates with the first headrest rod assembly hole; the button installation portion is a groove structure, and an avoidance notch is provided on the side of the sliding groove; The unlocking button includes a pressing portion provided in the button installation portion, a sliding portion provided at the bottom of the pressing portion and arranged in the sliding groove, and an insertion portion provided at the bottom of the pressing portion and inserted into the insertion hole. A return spring is provided between the pressing portion and the button installation portion, and a second headrest rod assembly hole is provided at a position opposite to the first headrest rod assembly hole; a lower limit portion is provided on the side of the sliding portion near the pressing portion, an upper limit portion is provided at the lower end of the sliding portion, and the lower limit portion and the upper limit portion cooperate to limit the Z-direction movement stroke of the unlocking button. An inclined driving portion is provided on the lower end of the sliding portion near one side of the headrest rod locking groove, and after the inclined driving portion moves downward, it is used to drive the locking pin to move away from the headrest rod locking groove; The locking pin is arranged in the locking pin installation groove, one end is fixed, and the other end moves along the Y direction relative to the columnar assembly portion, and the moving end of the locking pin extends into the first headrest rod assembly hole and cooperates with the headrest rod locking groove to lock and fix the headrest rod.

2. The novel guide sleeve unlocked by downward pressing according to claim 1, wherein Two installation columns are provided at the bottom of the pressing portion, and the upper ends of the two return springs are respectively installed and fixed on the two installation columns, and the lower ends of the return springs are in contact with the bottom surface of the button installation portion.

3. The novel guide sleeve unlocked by downward pressing according to claim 1, wherein An X-direction limit portion is provided on the front side of the columnar assembly portion near the sliding groove, and the lower end of the sliding portion is arranged inside the X-direction limit portion.

4. A novel guide sleeve unlocked by downward pressing according to claim 1, characterized in that, A Y-direction limit portion is provided on the side of the columnar assembly portion outside the locking pin installation groove.

5. A novel guide sleeve unlocked by downward pressing according to claim 1 or 2 or 3 or 4, characterized in that, Two symmetrical claws are provided on the outer side wall of the columnar assembly portion near the upper end, and grooves are provided on the upper surface and both sides of the two claws.

6. A novel guide sleeve unlocked by downward pressing according to claim 1 or 2 or 3 or 4, characterized in that The moving end of the locking pin is a rod-shaped structure.

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