CN2897036Y - Tilt range adjustment for reclining seats - Google Patents

Abstract

A tilt range adjustment device for a tilt seat, the seat comprising: a tilt device shell provided under a seat plate and having a tilt mechanism therein, a back panel connecting member connected to the tilt mechanism of the tilt device shell, and a back panel connected to the back panel connecting member, wherein the tilt range adjustment device comprises: a hinge shaft connected to the back panel connecting member; a sleeve bracket connected to the hinge shaft; a limit gear provided on the outside of the sleeve bracket; a locking rod connected to the limit gear through the sleeve bracket; a tilt angle adjustment cam having a gear meshing with the limit gear; and an arm protruding from the hinge shaft, so that the arm selectively contacts one of the contour surfaces of the tilt angle adjustment cam according to the rotation of the tilt angle adjustment cam, thereby the tilt range can be selectively adjusted and the tilt range adjustment device can be locked by operating the locking rod, thereby achieving convenient operation and smooth operation of the device.

Description

Tilt range adjustment for reclining seats

technical field

The device relates to an inclination range adjustment device for an incline seat.

Background technique

Generally, a seat includes a seat panel, a back panel connected to the seat panel at a predetermined angle, and support legs connected to a lower portion of the seat panel. Both the seat board and the back board are covered with a cover with a pad such as sponge or the like inside the cover. More recently, reclining chairs have been proposed in which the backboard reclines backward when the user leans back to stretch.

According to the reclining range adjustment technique in such a reclining seat, a gear is locked to a locking cam at a predetermined position by adjusting a lever. Then, due to the action of the locking cam, the back plate is always held in the predetermined position.

That is, conventional recline range adjustment devices are constructed so that when a user sits on the seat and leans back, the backboard is tilted, eg, 0 to 20 degrees, but is not locked in any intermediate position. Alternatively, conventional tilt range adjustment devices are configured such that the back panel is selectively locked at a preset angle (eg, 5, 10, 15 or 20 degrees). Therefore, a problem with the conventional inclination adjusting device is that, since the inclination range of the backboard is constant, the backboard cannot be tilted at a desired angle according to a user's preference and physical condition.

In an effort to overcome the problems of conventional reclining devices, a reclining range adjustment device for reclining seats was proposed in Korean Utility Model Registration No. 0315979, by which the backboard can be adjusted in a Tilt within variable tilt range. The reclining range adjusting device disclosed in Korean Utility Model Registration No. 0315979 is used in a reclining seat, as shown in FIG. 1 . As shown in Figure 2, the reclining range adjustment device of document 0315979 is installed in the reclining device housing of the reclining seat.

Referring to FIG. 1 , the recliner housing 18 is connected to the rotation shaft 16 of the support leg 14 below the seat plate 12 . The backboard 20 is disposed behind the seat board 12 by means of the backboard connector 36 for supporting the user's back. The first hinge shaft 24 is connected to the front lower part of the seat plate 12 . The second hinge shaft 26 is connected to the rear lower part of the seat plate 12 . The third hinge shaft 28 is connected to the front of the recliner housing 18 . The fourth hinge shaft 30 is connected to the rear of the recliner housing 18 . The first and third hinge axes 24 and 28 are interconnected by a front link 32 . The second and fourth hinge axes 26 and 30 are connected to each other by a rear link 34 . Thus, the seat plate 12, the recliner housing 18, the front link 32 and the rear link 34 form a four-bar linkage.

As shown in FIG. 2 , the third hinge shaft 28 is supported at the front of the recliner housing 18 , and the fourth hinge shaft 30 is supported at the rear of the recliner housing 18 . A backboard restoration elastic member 38 is provided at the middle part of the third hinge shaft 28 to provide elastic deformation for the front link 32 and the backboard connecting member 36 to return the backboard 20 to its original position. A forward stopper 40 is provided on one side of the third hinge axis 28 to selectively limit the forward tilt of the backboard 20 . A tilt strength adjusting unit 50 is provided on one side of the backboard restoring elastic member 38 to adjust the restoring strength of the backboard 20 by adjusting the elasticity of the backboard restoring elastic member 38 . In addition, the other side of the third hinge axis 28 is provided with an inclination range adjusting device 60 for adjusting the inclination range of the backboard 20 .

The inclination range adjusting device 60 includes: a stopper protrusion 62 mounted on the third hinge shaft 28 and protruding radially from the third hinge shaft 28; and a stopper 64 having a plurality of stepped contact surfaces so that When the stop protrusion 62 rotates, one end of the stop protrusion 62 selectively contacts one of the stepped contact surfaces of the stop member 64 . The inclination range adjusting device 60 also includes a rack 72 provided on the stopper 64 , a pinion 74 engaging the rack 72 , a rotation shaft 76 for rotating the pinion 74 , and a shaft connected to the rotation shaft 76 and the pinion 74 . The handle 78 at the opposite outboard end.

In the conventional inclination range adjusting device having the above structure, when the stopper protrusion 64 is rotated, the end portion of the stopper protrusion 64 selectively contacts one of the contact surfaces of the stopper 64 having the rack 72 . Accordingly, the reclining range of the seat can be adjusted by using a separate handle 78 and rotating the pinion 74 .

However, the conventional inclination range adjusting device has a problem in that the manipulation method for adjusting the inclination range is inconvenient for the user, and its operation is not smooth due to the structure having the rack 72, the pinion 74 and the separate handle 78. .

Utility model content

Therefore, the present device is proposed in view of the above-mentioned problems occurring in the prior art, and an object of the present device is to provide a reclining range adjusting device for reclining seats, wherein the reclining range of the seat is selected by manipulating a joystick and at the same time lock the joystick so that the seat can maintain its adjusted inclination range, so the user can manipulate the inclination range adjustment device more conveniently, and the device uses a cam mechanism, so that the user can adjust smoothly The reclining range of the seat.

In order to achieve the above object, the device provides a reclining range adjustment device for a reclining seat. The backplane connector of the tilt mechanism of the housing and the backplane connected to the backplane connector, wherein the tilt range adjustment device includes: a hinge shaft connected to the backplane connector; The hinge shaft is used to support the sleeve bracket of the hinge shaft; the limit gear is arranged on the outside of the sleeve bracket to adjust the inclination angle of the seat; it is connected to the limit gear through the sleeve bracket The gear is used to adjust the locking lever of the tilting angle of the reclining seat, and the locking lever slides in intervals around the outside of the sleeve bracket to lock the reclining seat at a predetermined tilting angle; the tilting angle adjustment cam has a a gear meshed with the stopper gear; and an arm protruding from the hinge shaft by a predetermined length so that the arm is selective to one of the contoured surfaces of the inclination angle adjustment cam according to the rotation of the inclination angle adjustment cam. ground contact.

The limiting gear and the locking rod are connected and fixed to each other through a limiting pin passing through the sleeve bracket, and the sleeve bracket through which the limiting pin passes is formed with an elongated hole, and along the elongated The hole is formed with a plurality of locking grooves at predetermined intervals, the limit pin moves along the elongated hole according to the rotation of the locking lever, and a stopper is intermittently locked in the locking grooves.

The stopper is installed on the outer side of the limit pin, and a spring is provided at one end of the stopper to apply elastic force to the stopper.

The beneficial effect of the utility model is that: the inclination range of the seat of the device can be selectively adjusted by manipulating a joystick, and at the same time, the joystick is locked so that the seat can maintain its adjusted inclination range, so the user can more The reclining range adjusting device is conveniently manipulated and uses a cam mechanism so that the user can smoothly adjust the reclining range of the seat.

Description of drawings

The above and other objects, features and advantages of the device can be more clearly understood through the following detailed description in conjunction with the accompanying drawings, wherein:

1 is a view showing a seat with a conventional reclining range adjusting device;

Fig. 2 is a perspective view showing the internal structure of the reclining device housing of the seat shown in Fig. 1, in which a conventional reclining range adjustment device is installed;

Figure 3 is a perspective view showing a seat with a reclining range adjusting device according to a preferred embodiment of the device;

Fig. 4 is a perspective view showing the internal structure of the reclining device housing of the seat shown in Fig. 3, wherein the tilting range adjusting device of the device is installed;

Fig. 5 is a perspective view showing a hinge shaft and a cam shaft of the inclination range adjusting device of Fig. 4;

Figure 6 is an exploded perspective view showing the locking lever and sleeve bracket of Figure 5;

Figure 7 is a perspective view illustrating the assembly of the locking lever and the sleeve bracket of Figure 6;

Figure 8 is a side view of the sleeve bracket of Figure 6; and

Figures 9a to 9d illustrate the operation of the seat tilt range adjustment device according to the present device.

Detailed ways

A preferred embodiment of the device will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 3 , in the reclining seat with the reclining range adjusting device of the present device, the reclining device housing 108 is connected to the rotating shaft 106 of the supporting leg 104 under the seat plate 102 . The backboard 110 is arranged behind the seat board 102 by means of the backboard connector, and is used to support the user's back. A pair of height-adjustable armrests 112 are disposed on both sides of the seat plate 102 . Furthermore, a waist panel 114 is arranged behind the seat panel 102 by means of a waist panel connection for supporting the lumbar area.

The tilt range adjustment device is mounted in the tilt device housing 108 . The tilting device case 108 may have a return elastic member to return the back plate 110 to its original position and a tilt strength adjustment unit that adjusts the return strength of the back plate 110 by adjusting the elasticity of the return elastic member. The tilting device housing 108 may also have a forward stop which stops the backboard 110 at a predetermined angle when it is rotated forward so that the backboard 110 does not rotate further forward. Also, the reclining device housing 108 may have a lumbar return elastic member for returning the lumbar 114 to its original position, a lumbar support strength adjusting unit for adjusting the recovery strength of the lumbar 114, and a lumbar stopper which When rotating forward, stop the waist board 114 at a predetermined angle, so that the waist board 114 will not rotate forward further. However, only the inclination range adjustment device will be described below. The structure of other parts of the tilting device housing 108 is the same as the corresponding structure of the device disclosed in Korean Patent Publication No. 2004-0049039.

As shown in FIG. 4 , the tilting range adjustment device of the present device includes a hinge shaft 116 disposed at the front position of the tilting device housing 108 . The backboard 110 is connected to the hinge shaft 116 through the backboard connector. The inclination range adjustment device also includes a sleeve bracket 118 (as shown in Fig. 6 ) that is connected to the hinge shaft 116 to support the hinge shaft 116, and one is arranged on the outside of the sleeve bracket 118 to adjust the inclination angle of the reclining seat. The limiting gear 120 and a locking lever 122 connected to the limiting gear 120 through the sleeve bracket 118 are used to adjust the inclination angle of the reclining seat. The locking lever 122 slides intermittently around the outer surface of the sleeve bracket 118 such that the reclining seat is locked at a predetermined reclining angle. The inclination range adjustment device further includes an inclination angle adjustment cam 126 which is arranged behind the hinge shaft 116 and has a gear 124 engaged with the limiting gear 120 .

The inclination range adjustment device further includes an arm 128 protruding from the outer surface of the hinge shaft 116 by a predetermined length so that the arm 128 is selectively aligned with a contoured surface of the inclination angle adjustment cam 126 according to the rotation of the inclination angle adjustment cam 126. contact and thus be locked at a predetermined angle. Both sides of the hinge shaft 116 are provided with arms 128 to maintain the balance of the hinge shaft 116 when rotating. In addition, tilt angle adjustment cams 126 are provided on both sides of the cam shaft 130 so that the two tilt angle adjustment cams 126 are respectively locked with each arm 128 . However, an inclination adjustment cam 126 located on the right as seen in the figure does not have a gear 124 .

As shown in FIGS. 6 to 8, the sleeve bracket 118 includes: a semi-cylindrical portion 132, which is in close contact with the outer surface of the hinge shaft 116; Protrudes outwards as a reinforcing flange.

The limit gear 120 and the locking lever 122 are connected to each other by a limit pin 136 passing through the outer sleeve portion 134 of the sleeve bracket 118 . An elongated hole 134 a is formed in the outer sleeve portion 134 at a predetermined position through which the stopper pin 136 passes so that the stopper pin 136 moves along the elongated hole 134 a according to the rotation of the lock lever 122 . In addition, a plurality of locking grooves 134b are formed at equal intervals along the elongated hole 134a in the outer sleeve portion 134 so that the stopper 138 is selectively inserted and locked into one of the locking grooves 134b. In addition, a through hole 134c is formed through the outer sleeve portion 134 so that the camshaft 130 is disposed through the through hole 134c.

The limiting gear 120 is in the shape of an arc plate. Gear teeth are formed around the outer circumferential surface of the limiting gear 120 . The cylindrical gear 124 may be integrated with the tilt angle adjustment cam 126 . Alternatively, gear 124 may be mounted on camshaft 130 after being manufactured in a separate process.

As shown in FIGS. 6 and 7 , the locking lever 122 is divided into two parts (upper and lower) to facilitate assembly with the socket bracket 118 . The locking lever 122 includes a cylindrical portion 140 surrounding the semi-cylindrical portion 132 of the socket bracket 118 , and a handle portion 142 protruding from the cylindrical portion 140 .

In addition, a plurality of ribs 140 a are provided on the inner surface of the cylindrical portion 140 to support the semi-cylindrical portion 132 and increase the rigidity of the locking lever 122 . A connection portion 140b is provided on the outer surface of the cylindrical portion 140 so that the stopper pin 136 can be inserted into the connection portion 140b.

The inclination angle adjustment cam 126 is a polygonal cylindrical body having a plurality of flat peripheral surfaces. The distance from the center of the cam 126 into which the camshaft 130 is inserted to the outer surface increases or decreases.

The stopper 138 is mounted on the limiting pin 136 . A spring 142 is disposed on one side of the stopper 138 for applying elastic force to the stopper 138 . The stopper 138 has an inclined surface or a chamfered surface at one end thereof so that the stopper 138 is easily locked in one of the locking grooves 134b.

In the tilt range adjusting device of the present device having the above structure, when the user rotates the locking lever 122, the stopper gear 120 is rotated. At this time, the stopper 138 mounted on the limiting pin 136 is locked in one of the locking grooves 134b in a section-wise manner. Further, the inclination angle adjustment cam 126 whose gear 124 is engaged with the limit gear 120 is rotated. Then, the position of the flat peripheral surface of the tilt angle cam 126 in contact with the arm 128 is changed. Thus, when the hinge shaft 116 is rotated due to the user's inclination, the inclination range of the arm 128 changes. Thereby, the reclining range of the seat can be adjusted.

The adjustment to the seat tilt range is shown in Figures 9a to 9d. When the locking lever 122 rotates clockwise, the tilt angle adjustment cam 126 rotates through the limiting gear 120 and the gear 124 . At the same time, the orientation of the peripheral surface of the cam 126 changes according to the amount of rotation of the lock lever 122 . Arm 128 may then be rotated from its initial position at a predetermined angle, such as 2 degrees, 7 degrees, 12 degrees or 17 degrees, at which angle arm 128 contacts one of the contoured surfaces of cam 126, as shown in Figure 9a to 9d. In this way, the reclining range of the seat can be adjusted.

As described above, the present device provides a reclining range adjusting device for a reclining seat, wherein the reclining range of the seat is selectively adjusted by manipulating a joystick, and at the same time, the lever is locked so that the seat can be held Its adjusted tilt range. Therefore, the manipulation is more convenient for the user. In addition, since the present device uses a cam mechanism, it is easy for the user to adjust the reclining range of the seat.

Although a preferred embodiment of the device has been disclosed for illustrative purposes, those of ordinary skill in the art appreciate that various modifications, additions and substitutions can be made without departing from the scope and principles of the device as disclosed in the appended claims.

Claims (3)

1. the slant range adjusting device of a tilted seat, described seat is provided with: be located at seat board below and inside and have the tilting gearing housing of leaning device, the backboard connector that links to each other with the leaning device of described tilting gearing housing and the backboard that is connected in described backboard connector, wherein, described slant range adjusting device comprises:

Be connected in the hinge axis of described backboard connector;

Be connected in described hinge axis and support the sleeve carriage of this hinge axis;

Be arranged at the described sleeve carriage outside and the position limited gear at adjustment tilted seat angle of inclination;

Be connected in the securing rod that described position limited gear is adjusted the angle of inclination of tilted seat by described sleeve carriage, the interval formula of this securing rod ground slides around the outside of described sleeve carriage, thereby tilted seat is locked in predetermined place, angle of inclination;

Cam is adjusted at the angle of inclination, and it has a gear that is meshed with described position limited gear; And

By the arm of the outstanding predetermined length of described hinge axis, thereby make described arm optionally contact according to the rotation of angle of inclination adjustment cam and with one of them contour surface of described angle of inclination adjustment cam.

2. the slant range adjusting device of tilted seat as claimed in claim 1, wherein, described position limited gear and securing rod are connected to each other by a spacer pin that passes described sleeve carriage and are fixing, and

The sleeve carriage that described spacer pin passes is formed with an elongated hole, and be formed with a plurality of lock slots with predetermined space along this elongated hole, described spacer pin moves along this elongated hole according to the rotation of described securing rod, and an interval formula of stop part lock in the described lock slots.

3. the slant range adjusting device of tilted seat as claimed in claim 2, wherein, described stop part is installed on the outside of described spacer pin, and described stop part is provided with a spring at place, one end, so that this stop part is applied elastic force.

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