Seat headrest adjusting sliding sleeve

Abstract

The utility model relates to the technical field of automobile parts, in particular to a seat headrest adjusting sliding sleeve which comprises a sliding sleeve body, an outer shell and a locking piece movably inserted into the outer shell through a first elastic supporting piece, and a positioning mechanism is arranged at the top end of the locking piece. The positioning mechanism comprises two movable plates arranged on the two sides of the top end of the locking piece in a sliding mode, first positioning columns fixed to the opposite sides of the two movable plates and a second elastic supporting piece connected with the two movable plates, and an opening allowing the locking piece to extend to the outside is formed in one side of the outer shell in a penetrating mode. Two first positioning columns are arranged in the outer shell, positioning holes matched with the two first positioning columns are formed in the two inner side walls with opposite openings respectively, and when the locking piece is inserted into the outer shell to position the headrest pipe, the second elastic supporting piece pushes the first positioning columns to be inserted into the positioning holes respectively. By arranging the positioning mechanism, the headrest pipe can be prevented from moving up and down in the using process, and stability and safety are high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a seat headrest adjustment sliding sleeve. Background Art

[0002] The car seat headrest is an auxiliary device for improving the comfort and safety of the car. There are two types of car headrests: fixed and movable. In the movable headrest, a headrest adjustment sleeve is usually provided at the connection between the headrest latch and the seat back frame.

[0003] The existing headrest adjustment sleeve is generally provided with a locking piece by sliding at the top. When adjusting the headrest, the headrest tube is inserted into the adjusting sleeve, and the locking piece is snapped into the slot on the outer wall of the headrest tube to fix it. However, the locking piece can generally only limit the headrest from moving downward, while the headrest can still move upward, resulting in poor stability. When the vehicle is hit, the headrest is thrown out, which is easy to cause danger. Utility Model Content

[0004] The utility model aims to provide a seat headrest adjustment sleeve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seat headrest adjustment sleeve, comprising a sleeve main body, an outer shell body fixed at the top of the sleeve main body and a locking piece movably plugged into the inner part of the outer shell body through a first elastic support piece, one end of the locking piece extends to the outside of the outer shell body, and a plug hole for accommodating the headrest tube to be inserted into the inner part of the sleeve main body is provided through the middle of the outer shell body, the locking piece is used to fix the headrest tube, a positioning mechanism is provided at the top of the locking piece, and the positioning mechanism includes two movable plates slidably arranged on both sides of the top of the locking piece, a first positioning column fixed on the opposite sides of the two movable plates and a second elastic support piece connecting the two movable plates, one side of the outer shell body is provided with an opening for accommodating the locking piece extending to the outside, and two inner side walls opposite to the opening are respectively provided with positioning holes matching the two first positioning columns, when the locking piece is inserted into the inner part of the outer shell body to position the headrest tube, the second elastic support piece pushes the first positioning columns to be respectively inserted into the positioning holes.

[0006] Furthermore, the second elastic support member includes a guide rod horizontally mounted on the top of the locking plate through a mounting plate and a spring sleeved on the guide rod, the guide rod is arranged along the length direction of the outer shell opening, and the movable plates are penetrated with through holes for accommodating the guide rod to pass through, the two movable plates are respectively slidably arranged at the two ends of the guide rod, and the two movable plates are respectively abutted against the two ends of the spring, and the spring is used to push the first positioning column to be inserted into the positioning hole on the inner side wall of the outer shell opening.

[0007] Furthermore, a first limiting plate is fixed to the locking piece outside the outer shell, and both sides of the first limiting plate are penetrated by grooves for accommodating the movable plate to pass through, and the two movable plates can slide inside the grooves along the length direction of the guide rod.

[0008] Furthermore, a dome is provided at one end of the first positioning column away from the movable plate.

[0009] Furthermore, at least two clearance openings are arranged at the bottom end of the sliding sleeve body along its length direction, and a plurality of second positioning columns are arranged on the outer side wall of the sliding sleeve body.

[0010] Furthermore, a dome is provided at one end of the second positioning column away from the sliding sleeve body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) By setting a positioning mechanism, after adjusting the insertion length of the headrest tube, the locking piece is inserted into the interior of the outer shell to lock the headrest tube, and at the same time, the first positioning column is inserted into the back of the positioning hole on the inner side wall of the outer shell opening to limit the horizontal movement of the locking piece, thereby limiting the upward movement of the headrest tube, thereby improving stability, preventing the headrest from being thrown out and causing danger, and being easy to use;

[0013] (2) By providing the clearance opening and the second positioning column, it is possible to prevent the adjustment sleeve from rotating relative to the seat frame during assembly, causing the locking plate and the slot on the seat frame to be misaligned, thereby affecting the engagement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is an explosion diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the top-sectional structure of the outer shell of the utility model;

[0017] Figure 4 It is a schematic diagram of the side section structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model in an assembled state;

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the utility model in the assembled state.

[0020] In the figure: 1. sliding sleeve body; 101. clearance opening; 102. second positioning column; 2. outer shell; 201. jack; 202. cavity; 3. locking plate; 301. clearance hole; 302. first limit plate; 3021. clearance groove; 303. second limit plate; 4. positioning mechanism; 401. movable plate; 402. first positioning column; 403. second elastic support member; 4031. guide rod; 4032. spring; 5. first elastic support member; 6. headrest tube; 7. seat frame. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. In the description of the utility model, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In order to make the terms "including" and any variations of them in the specification and claims of the utility model and the above-mentioned drawings, it is intended to cover non-exclusive inclusions.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0023] See also Figure 1-6, The utility model provides an embodiment: a seat headrest adjustment sleeve, comprising a sleeve body 1, an outer shell 2 fixed to the top of the sleeve body 1 and a locking piece 3 movably plugged into the outer shell 2 through a first elastic support member 5. In this embodiment, the sleeve body 1 is a cylindrical tubular structure with two ends passing through, and a tip is provided at its bottom end for convenient insertion into the seat frame 7. At least two clearance openings 101 are provided at the bottom end of the sleeve body 1 along its length direction, and a plurality of second positioning columns 102 are provided on the outer side wall of the sleeve body 1. In this embodiment, two clearance openings 101 and two second positioning columns 102 are provided. The two clearance openings 101 divide the bottom end of the sleeve body 1 into two parts, so that both sides of the bottom end of the sleeve body 1 can undergo elastic deformation, which is convenient for later insertion and positioning. The two second positioning columns 102 are respectively located on the outer side walls of the two parts, and a dome is provided at one end of the second positioning column 102 away from the sleeve body 1 for convenient insertion. Specifically, the specific structure of the seat frame 7 is the prior art, which is used to fix and adjust the sleeve. Refer to the attached Figure 5-6 The side wall of the seat frame 7 is provided with a through hole for accommodating the insertion of the second positioning column 102. After the sliding sleeve body 1 is inserted into the seat frame 7, it can be limited and fixed to prevent the sliding sleeve body 1 from rotating or moving up and down during use, thereby improving the stability of its installation;

[0024] One end of the locking piece 3 extends to the outside of the outer shell 2, and a plug hole 201 for accommodating the headrest tube 6 to be inserted into the inner part of the sliding sleeve body 1 is provided through the middle of the outer shell 2. The locking piece 3 is used to fix the headrest tube 6. Specifically, refer to the attached Figure 2-3 When the locking piece 3 is pulled outward, the headrest tube 6 can still slide up and down inside the clearance hole 301.

[0025] A positioning mechanism 4 is provided at the top of the locking piece 3, and the positioning mechanism 4 includes two movable plates 401 slidably arranged on both sides of the top of the locking piece 3, first positioning columns 402 fixed on the opposite sides of the two movable plates 401, and second elastic supporting members 403 connecting the two movable plates 401. Positioning holes matching the two first positioning columns 402 are respectively provided on the two opposite inner side walls of the opening of the outer shell 2, and a dome is provided at one end of the first positioning column 402 away from the movable plate 401 for easy insertion and positioning. When the locking piece 3 is inserted into the outer shell 2 to position the headrest tube 6, the second elastic supporting member 403 pushes the first positioning column 402 to be inserted into the positioning holes respectively, and the second elastic supporting member 40 3 comprises a guide rod 4031 horizontally mounted on the top of the locking piece 3 through a mounting plate and a spring 4032 sleeved on the guide rod 4031, the guide rod 4031 is arranged along the length direction of the opening of the outer shell 2, and the movable plates 401 are penetrated with through holes for accommodating the guide rod 4031 to pass through, the two movable plates 401 are respectively slidably arranged at the two ends of the guide rod 4031, and the two movable plates 401 are respectively abutted against the two ends of the spring 4032, the spring 4032 is used to push the first positioning column 402 to insert into the positioning hole of the inner side wall of the opening of the outer shell 2, and when the locking piece 3 is inserted into place, the two first positioning columns 402 are inserted into the interior of the positioning hole under the elastic action of the spring 4032;

[0026] The locking piece 3 outside the outer shell 2 is fixed with a first limiting plate 302, and the first limiting plate 302 abuts against the opening of the outer shell 2 to play a certain sealing role. The first limiting plate 302 is penetrated by two sides with a clearance groove 3021 for accommodating the movable plate 401 to pass through. The two movable plates 401 can slide inside the clearance groove 3021 along the length direction of the guide rod 4031. When in use, the two movable plates 401 can be directly pinched in the middle and then pulled outward to pull the locking piece 3 outward, and the insertion depth of the headrest tube 6 can be adjusted, which is easy to operate.

[0027] Working principle: During assembly, the sleeve body 1 is directly inserted downward into the interior of the seat frame 7. The seat frame 7 is penetrated with a through hole that matches the second positioning column 102. When the second positioning column 102 is inserted into the positioning hole, the positioning of the sleeve body 1 is completed to prevent the sleeve body 1 and the seat frame 7 from rotating or moving up and down, thereby improving the stability of its assembly. When the headrest height needs to be adjusted, the two movable plates 401 are pinched in the middle and then the locking piece 3 is pulled outward. The first positioning column 402 is disengaged from the positioning hole on the outer shell 2, and the locking piece 3 is separated from the headrest tube 6, so that the up and down position of the headrest tube 6 can be adjusted. After the position is adjusted, the locking piece 3 is reset under the elastic action of the first elastic support member 5. When the end of the locking piece 3 abuts against the inner side wall of the outer shell 2, the first positioning column 402 is inserted into the positioning hole on the inner side wall of the opening of the outer shell 2 to realize the positioning of the locking piece 3, and the card groove on the headrest tube 6 abuts against the top of the locking piece 3 to realize the card connection and fixation of the headrest tube 6.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A seat headrest adjustment sleeve, comprising a sleeve body (1), an outer shell (2) fixed to the top of the sleeve body (1), and a locking piece (3) movably plugged into the outer shell (2) through a first elastic support member (5), one end of the locking piece (3) extending to the outside of the outer shell (2), a plug hole (201) for accommodating a headrest tube (6) inserted into the sleeve body (1) is provided through the middle of the outer shell (2), the locking piece (3) is used to fix the headrest tube (6), and is characterized in that: A positioning mechanism (4) is provided at the top of the locking piece (3), and the positioning mechanism (4) includes two movable plates (401) slidably arranged on both sides of the top of the locking piece (3), a first positioning column (402) fixed on the opposite sides of the two movable plates (401), and a second elastic support member (403) connecting the two movable plates (401); an opening for accommodating the locking piece (3) extending to the outside is provided through one side of the outer shell (2), and positioning holes matching the two first positioning columns (402) are respectively provided on two inner side walls opposite to the opening; when the locking piece (3) is inserted into the outer shell (2) to position the headrest tube (6), the second elastic support member (403) pushes the first positioning columns (402) to be inserted into the positioning holes.

2. The seat headrest adjustment sleeve according to claim 1, characterized in that: The second elastic support member (403) comprises a guide rod (4031) horizontally mounted on the top of the locking plate (3) through a mounting plate and a spring (4032) sleeved on the guide rod (4031); the guide rod (4031) is arranged along the length direction of the opening of the outer shell (2); the movable plates (401) are penetrated with through holes for accommodating the guide rod (4031); the two movable plates (401) are respectively slidably arranged at the two ends of the guide rod (4031), and the two movable plates (401) are respectively abutted against the two ends of the spring (4032); the spring (4032) is used to push the first positioning column (402) to be inserted into the positioning hole on the inner side wall of the opening of the outer shell (2).

3. The seat headrest adjustment sleeve according to claim 1, characterized in that: The locking piece (3) outside the outer shell (2) is fixed with a first limiting plate (302), and both sides of the first limiting plate (302) are penetrated by means of a clearance groove (3021) for accommodating the movable plate (401) to pass through, and the two movable plates (401) can slide inside the clearance groove (3021) along the length direction of the guide rod (4031).

4. The seat headrest adjustment sleeve according to claim 1, characterized in that: A dome is provided at one end of the first positioning column (402) away from the movable plate (401).

5. The seat headrest adjustment sleeve according to claim 1, characterized in that: At least two clearance openings (101) are arranged at the bottom end of the sliding sleeve body (1) along its length direction, and a plurality of second positioning columns (102) are arranged on the outer side wall of the sliding sleeve body (1).

6. The seat headrest adjustment sleeve according to claim 5, characterized in that: A dome is provided at one end of the second positioning column (102) away from the sliding sleeve body (1).

Images