CN112677851A

CN112677851A - Guide pipe for preventing abnormal sound of headrest rod of automobile seat

Info

Publication number: CN112677851A
Application number: CN202110049873.1A
Authority: CN
Inventors: 谭成友; 李沛然; 佘扬佳; 梁天福
Original assignee: China Automotive Engineering Research Institute Co Ltd
Current assignee: China Automotive Engineering Research Institute Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-04-20
Anticipated expiration: 2041-01-14
Also published as: CN112677851B

Abstract

The invention belongs to the technical field of automobile seat headrest parts, and particularly relates to a guide pipe for preventing abnormal sound of an automobile seat headrest rod. The invention solves the problem of abnormal sound between the headrest rod and the headrest conduit of the automobile seat.

Description

Guide pipe for preventing abnormal sound of headrest rod of automobile seat

Technical Field

The invention belongs to the technical field of automobile seat headrest parts, and particularly relates to a guide pipe for preventing abnormal sound of an automobile seat headrest rod.

Background

At present, in the design of a conventional fixed automobile seat headrest rod guide pipe, an unlocking button at the upper end of the seat headrest rod guide pipe is connected with a limiting block, when the headrest rod unlocking button is pressed down, the limiting block moves to the outside of a seat headrest rod guide pipe hole, the unlocking function is realized, and after the seat headrest rod unlocking button is loosened, the limiting block resets, and the locking function is realized.

Adopt this seat headrest pole pipe design structure, can lead to seat headrest pole to insert behind the pipe like this, headrest pole and pipe clearance are great under the stopper, and the vehicle is gone when jolting on the road surface, and seat headrest pole and pipe easily produce the striking, send and make the user feel noisy squeak the abnormal sound of squeaking, bring complain for the user to influence the user and experience with the car.

Disclosure of Invention

The invention aims to provide a guide pipe for preventing abnormal sound of a headrest rod of an automobile seat, so as to solve the problem of abnormal sound between the headrest rod and the headrest guide pipe of the automobile seat.

In order to achieve the purpose, the scheme of the invention is as follows: prevent pipe of car seat headrest pole abnormal sound, including the pipe body, unblock button and stopper, unblock button is along the radial sliding connection of pipe body on the pipe body, and the stopper is located the one end of keeping away from unblock button on the pipe body, still includes application of force lever and spring leaf, and the one end and the unblock button of application of force lever are connected, and the other end is connected with the stopper, and the fulcrum setting of application of force lever is at the middle part of application of force lever, and the one end and the pipe body of spring leaf are fixed, and the other end offsets with the stopper.

The working principle and the beneficial effects of the scheme are as follows: compare with traditional structure, the present case has abandoned the structure that the unblock button is connected with the stopper on the seat headrest pole pipe body, the substitute is the structure that the unblock button passes through application of force lever and stopper and is connected on the seat headrest pole pipe body, and the spring leaf contact structural style that links firmly on the pipe body, the spring leaf has elasticity, and has buffer function, make its seat headrest pole have certain pretightning force after inserting the pipe body, thereby lock the headrest pole through the stopper, can effectively prevent the emergence of the squeak abnormal sound that seat headrest pole and pipe body striking and produce, eliminate user's complaint, thereby avoid influencing user's experience with the car.

Optionally, the number of the force application levers is two and the two force application levers are respectively located on two opposite sides of the catheter body, and one ends of the two force application levers, which are close to the limiting block, are connected through a connecting piece.

The force applying levers on the two sides apply acting force to the limiting block at the same time, so that the limiting block moves more stably, and the service life of the force applying levers is longer.

Optionally, a reinforcing rib is arranged on the outer side surface of the force application lever along the length direction, and the force application lever and the connecting sheet are integrally formed. The structural strength of the force application lever and the connecting piece is increased.

Optionally, the catheter body is provided with a limiting groove, and the force application lever is installed in the limiting groove. In order to reduce the space occupied by the force application lever, the force application lever is generally in a sheet shape, so that the force application lever has good structural strength in the force application direction, but has weaker strength in the direction perpendicular to the force application direction. And through the setting of spacing groove, prevent on the one hand that excessive application of force from causing the excessive bending deformation of application of force lever after damaging, on the other hand protects application of force lever, avoids it to take place the motion and warp in the direction of perpendicular application of force.

Optionally, the ends of the two force application levers, which are close to the limiting block, are provided with U-shaped barbs, and the two ends of the limiting block are respectively connected in the two U-shaped barbs in a sliding manner. Utilize U type barb to carry on spacingly to the stopper to make things convenient for the installation of stopper.

Optionally, the free end of the spring piece tilts towards the outer side of the guide pipe body, and the limiting block is cylindrical. The buckling end of the spring piece is always kept tangent to the limiting block, so that the spring piece can apply force to the limiting block even if the limiting block moves in the length direction of the catheter body.

Optionally, the one end that the pipe body is close to the stopper is the external screw thread end and the cover is equipped with the sliding sleeve, is equipped with the pawl on the sliding sleeve, and the pawl offsets with the stopper, is equipped with the thread bush on the one side that the pawl was kept away from to the sliding sleeve, and the thread bush is equipped with the internal thread that matches with the external screw thread end, thread bush and external screw thread end threaded connection.

After the spring piece is used for a long time or the headrest rod slightly deforms, the pressure applied to the limiting block by the spring piece can be reduced, and the locking effect is weakened. At the moment, the threaded sleeve is screwed to enable the sliding sleeve to move towards the knob side, the sliding sleeve pushes the push claw to drive the limiting block to move towards the unlocking button, the elasticity of the spring piece is increased at the moment, and the locking effect is restored again.

Optionally, the end of the U-shaped barb is provided with a mousing hook. The limiting block is prevented from being separated from the U-shaped barb.

Drawings

Fig. 1 is a schematic structural view of a duct for preventing abnormal sound of a headrest rod of an automobile seat according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a duct for preventing abnormal sound of a headrest rod of an automobile seat according to a second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a headrest rod 1, a catheter body 2, an unlocking button 3, a limiting block 4, a force application lever 5, a fulcrum 6, a spring piece 7, a limiting groove 8, a U-shaped barb 9, a sliding sleeve 10, a push claw 11, a threaded sleeve 12 and an anti-unhooking hook 13.

Example one

This embodiment is substantially as shown in fig. 1: prevent pipe of car seat headrest pole abnormal sound, including pipe body 2, release button 3 and stopper 4, release button 3 is along 2 radial sliding connection on pipe body 2 of pipe body, stopper 4 is located pipe body 2 and is kept away from release button 3's one end, still include application of force lever 5 and spring leaf 7, application of force lever 5 is made by spring steel sheet, be equipped with spacing groove 8 on the lateral wall of 2 left and right sides of pipe body, the quantity of application of force lever 5 is two, application of force lever 5 is installed in spacing groove 8, application of force lever 5's one end is connected with release button 3, the other end is connected with stopper 4, two application of force levers 5 are close to the one end of stopper 4 and pass through the connection piece and connect, application of force lever 5 and connection piece integrated into one piece. The middle part of the force application lever 5 is provided with a fulcrum 6 hole, the catheter body 2 is integrally formed with the fulcrum 6, the fulcrum 6 is positioned in the fulcrum 6 hole, one end of the spring piece 7 is fixed with the catheter body 2, the other end of the spring piece 7 is abutted against the limiting block 4, and the spring piece 7 exerts pre-pressure on the limiting block 4. The outer side surface of the force application lever 5 is provided with a reinforcing rib along the length direction.

After the unlocking button 3 is pressed, the limiting block 4 overcomes the pressure tilting of the spring piece 7 through the lever action of the force application lever 5, then the headrest rod 1 is inserted into the catheter body 2, and after the unlocking button 3 is released, the limiting block 4 and the headrest rod 1 are kept against each other under the action of the spring piece 7, so that abnormal sound caused by the collision between the headrest rod 1 and the catheter body 2 is avoided.

Example two

This embodiment is basically as shown in fig. 2, and differs from the first embodiment in that: two application of force levers 5 are close to stopper 4 end and all are equipped with U type barb 9, and the both ends of stopper 4 sliding connection is respectively in two U type barbs 9, and U type barb 9 end is equipped with mousing-hook 13. The free end of the reed tilts towards the outer side of the guide pipe body 2, and the limiting block 4 is cylindrical. The one end that pipe body 2 is close to stopper 4 is the external screw thread end and the cover is equipped with sliding sleeve 10, is equipped with pusher dog 11 on the sliding sleeve 10, and pusher dog 11 offsets with stopper 4, and sliding sleeve 10 keeps away from being equipped with thread bush 12 on the one side of pusher dog 11, and thread bush 12 is equipped with the internal thread that matches with the external screw thread end, thread bush 12 and external screw thread end threaded connection.

When the locking effect is weakened due to looseness between the catheter body 2 and the headrest rod 1, the threaded sleeve 12 is screwed to enable the sliding sleeve 10 to move towards the knob side, the sliding sleeve 10 pushes the push claw 11 to drive the limiting block 4 to move towards the unlocking button 3, the elastic force of the spring piece 7 is increased, and the locking effect is restored again.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims

1. Prevent pipe of car seat headrest pole abnormal sound, including pipe body, unblock button and stopper, unblock button is along the radial sliding connection of pipe body on the pipe body, its characterized in that: the limiting block is located at one end, far away from the unlocking button, of the catheter body, the limiting block further comprises a force application lever and a spring piece, one end of the force application lever is connected with the unlocking button, the other end of the force application lever is connected with the limiting block, a fulcrum of the force application lever is arranged in the middle of the force application lever, one end of the spring piece is fixed with the catheter body, and the other end of the spring piece is abutted to the limiting.

2. The guide duct for preventing abnormal sound of a headrest pole for a car seat according to claim 1, wherein: the two force application levers are respectively positioned on two opposite sides of the catheter body, and one ends of the two force application levers close to the limiting blocks are connected through the connecting piece.

3. The guide duct for preventing abnormal sound of a headrest pole for a car seat according to claim 2, wherein: the outer side surface of the force application lever is provided with a reinforcing rib along the length direction, and the force application lever and the connecting sheet are integrally formed.

4. The guide duct for preventing abnormal sound of a headrest pole for a car seat according to claim 1, wherein: the catheter body is provided with a limiting groove, and the force application lever is arranged in the limiting groove.

5. The guide duct for preventing abnormal sound of a headrest pole for a car seat according to claim 3, wherein: two application of force levers are close to stopper end and all are equipped with U type barb, and the both ends of stopper are sliding connection respectively in two U type barbs.

6. The guide duct for preventing abnormal sound of a headrest pole for a car seat according to claim 5, wherein: the free end of the spring piece tilts towards the outer side of the guide pipe body, and the limiting block is cylindrical.

7. The guide duct for preventing abnormal sound of a headrest pole for a car seat according to claim 6, wherein: the one end that the pipe body is close to the stopper is the external screw thread end and the cover is equipped with the sliding sleeve, is equipped with the pawl that pushes away on the sliding sleeve, pushes away the pawl and offsets with the stopper, is equipped with the thread bush on one side that the pawl was kept away from to the sliding sleeve, and the thread bush is equipped with the internal thread that matches with the external screw thread end, thread bush and external screw thread end threaded connection.

8. The guide duct for preventing abnormal sound of a headrest pole for a car seat according to claim 7, wherein: the tail end of the U-shaped barb is provided with an anti-drop hook.