KR20050007914A - Reclining device of seat for vehicle - Google Patents

Abstract

PURPOSE: A reclining apparatus of a seat of a vehicle is provided to increase the productivity by reducing parts, to improve the convenience and the durability by restoring the seat back at a time and to enhance the comfortableness by adjusting the seat back forward and backward according to the body shape of the driver or the passenger. CONSTITUTION: A reclining apparatus(100) of a seat of a vehicle comprises a plate holder fixed to the inner end of a cushion frame of the seat; an upper tooth bracket(103) fastened to the lower part of a seat back frame; an actuator(105) inserted between the upper tooth bracket and the plate holder for reclining and unreclining; and a retainer(104) restricting the plate holder and the upper tooth bracket. The actuator comprises a cam(111) fixed to a shaft(110) penetrating a shaft hole(107) of the upper tooth bracket, a lock gear(115) composed of a gear(114) engaged or disengaged from a gear(113) of the upper tooth bracket by the cam and contained in a guide hole(112) of the plate holder, a pushing pin(121) contacted to a locking line(120) to lock by pushing the lock gear outward, and a pulling projection(124) combined with a fitting groove(123) of the lock gear to release reclining by pulling the lock gear.

Description

Reclining device of seat for vehicle

The present invention relates to a reclining apparatus for an automobile seat, and more particularly, to an improved reclining apparatus for allowing the seat back of an automobile to be angularly adjusted in a forward and rearward direction according to a rider's body shape.

The seat of the vehicle is to maintain the attitude of the vehicle occupant, and is further provided with a reclining device to adjust the angle of the backrest to the front and rear to fit the driver and the passenger's body shape to maintain a posture suitable for driving.

The reclining apparatus is configured to be angle-adjusted by the back of the seat by operating a lever protruding laterally mounted on the connection between the cushion frame and the seat back frame constituting the seat of the vehicle.

Various such reclining apparatuses have been developed and used, and the applicant of the present application has also applied for a number of cases, and a representative example is as follows.

Conventional reclining apparatus (1) is a plate holder (2) fixed to the inner end of the cushion frame constituting the seat and the upper portion of the upper bracket (4) fixed to the lower end of the seat back frame (4) and the plate It consists of a shaft 6 coupled to the actuating means on the outside of the holder 2 and an actuating lever and a return spring.

The operator 5 is reclined and unclined by connecting and disengaging the gear tooth 10 which is inserted into the space between the plate holder 2 and the upper bracket 4 and formed on the upper bracket 4. The gear gear 11 is formed on the outer surface so as to be selected, and the lock gear 12 having the cam groove 13 and the cam line 14 is provided on the inner surface.

The lock gear 12 is pushed and pulled by the cam 5 formed on the cam lever 16 coupled to the shaft 6 so that the gear teeth 10 and 11 are locked and unlocked.

The cam lever 16 is returned by the lever spring 8 positioned between the plate holder 2 and the upper bracket 4, and the lever spring 8 is connected to both sides of the cam lever 16. Protruding spring pin 20 to form.

A cam 15 formed in the cam lever 16 is formed by forming a locking groove 21 deeply formed in the opposite direction to the operating direction of the cam 15 integrally with the cam groove 13 formed in the lock gear 12. ) Is formed so that the locking projection 22 can be engaged with the locking groove 21 to release the locking state more easily.

In the prior art as described above,

Only two points in both the upper and lower directions are supported by the lock gear in engagement with the upper tooth so that safety cannot be maintained normally when locking, and when reclining is released due to play caused by the lack of close contact between the lock gear and the upper tooth. The "tongue" will provide the cause of the sound.

In addition, the lock gear and the upper tooth are also subjected to a larger load in the reclining direction, thereby providing a cause of considerable impact and noise during unreclining in such a state, thereby making the durability of the reclining apparatus itself weak.

In particular, the reclining device further includes a separate return spring for returning the cam, thereby complicating the internal structure, making the parts difficult to manage, and the assembling process becoming complicated, thereby reducing productivity and assemblability. Is happening.

Accordingly, the present invention is to solve the above problems, while reducing the number of parts of the circular type reclining device to improve the productivity and assembly, while smoothing the reclining and unreclining, the folded seat back is a basic seating position By returning smoothly without resistance, the main purpose is to increase the user's convenience and contribute to the improvement of quality and durability of the reclining apparatus.

1 is a perspective view showing an extract of a car seat for explaining the reclining apparatus of the car seat of the present invention.

Figure 2 is an exploded perspective view showing a reclining apparatus of a vehicle seat to which the technique of the present invention is applied.

Figure 3 is a perspective view of a state without a front cover showing a combined state of the reclining apparatus of the vehicle seat to which the technique of the present invention is applied.

Figure 4 is an excerpt front view showing a state in which the reclining apparatus of the vehicle seat to which the technique of the present invention is applied is locked.

Figure 5 is an excerpt front view showing an unlocked state of the reclining apparatus of the vehicle seat to which the technique of the present invention is applied.

Figure 6 is an excerpt front view showing a free release state of the reclining apparatus of the vehicle seat to which the technique of the present invention is applied.

Figure 7 is a front cross-sectional view showing a locked state of the vehicle recliner to which the prior art is applied.

Figure 8 is a front cross-sectional view showing an unlocking state of a vehicle recliner to which the prior art is applied.

* Description of the symbols used in the main parts of the drawings *

100; Reclining Device

102; Plate holder

103; Upper Tooth Bracket

104; Retainer

105; Operator

111; cam

115; Lock gear

121; Pushing pin

123; Home

124; Pulling protrusion

130; Free release protrusion

133; Free release rail

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the preferred embodiment of the present invention for achieving the above object.

1 is a perspective view showing an automobile seat for explaining the reclining apparatus of the automobile seat of the present invention, Figure 2 is an exploded perspective view showing a reclining apparatus of a vehicle seat to which the technique of the present invention is applied, Figure 3 4 is a perspective view showing a state in which a reclining apparatus of a car seat to which the technique of the present invention is applied is shown without a front cover, and FIG. 4 is a front view showing a locked state of the reclining apparatus of a car seat to which the technique of the present invention is applied. Fig. 5 is a front view showing an unlocked state of the reclining apparatus of a vehicle seat to which the technique of the present invention is applied, and Fig. 6 shows a free release state of the reclining apparatus of a vehicle seat to which the technique of the present invention is applied. As an excerpt front view, it demonstrates together.

Automotive seat reclining apparatus 100 is provided with a plate holder 102 fixed to the inner end of the cushion frame of the seat 101 and an upper tooth bracket 103 fixed to the lower end of the seat back frame are coupled to the outside thereof It is interrupted by the retainer 104.

The plate holder 102 and the upper bracket 103 are interposed between an operator 105 that operates substantially reclining and unclining.

The operator 105 is coupled to the lever 106 protruding to the side of the seat 101 and always returned to the locked state by the return spring, and the shaft hole 107 of the plate holder 102 and the aposto bracket 103. Cam 111 is fixed to the shaft 110 through).

The outer side of the cam 111 is housed in the guide hole 112 formed in the plate holder 102 is connected to and separated by the gear 111 and the cam 111 formed on the inner diameter surface of the upper bracket (103). And a lock gear 115 having a gear 114 formed on the outer surface to select reclining and unclining.

The cam 111 and the lock gear 115 have the cam 111 protruding in three directions so as to take the most stable form, and the lock gear 115 has the same three as the cam 111 radially (120 °). ).

The outer surface of the cam 111 is connected to the locking line 120 formed in an arc shape on the inner surface of the lock gear 115 to form a pushing pin 121 for pushing and locking one side of the lock gear 115. On the opposite side of the pushing pin 121, an auxiliary pin 122 is further formed to push the other side of the lock gear 115 to maintain a stable locking state.

Coupled with the engaging groove 123 formed on the inner side of the lock gear 115 extends from the pushing pin 121 to pull the lock gear 115 to form a pull projection 124 to select the unclining.

It is formed on the bottom surface 131 of the upper tooth bracket 103 in which the gear 113 is formed by protruding the free release protrusion 130 protruding from the bottom of one of the lock gear 115 of the lock gear 115. The free release rail 133 is slid to allow the folded seatback 132 to move to the standard seating position without being locked.

Of course, it will be apparent that the operating angle α of the free release rail 133 can be made equal to the basic seating angle α1 of the seat cushion 134 and the seat back 132 of the seat 101. The height (thickness) of the free release protrusion 130 and the free release rail 133 should be such that the lock gear 115 does not deviate from the height (thickness) of the gear 113 of the upper tooth bracket 103.

The present invention as described above,

In the initial state, the gear 114 of the lock gear 115 inserted between the plate holder 102 and the upper tooth bracket 103 is connected (engaged) with the gear 113 formed circularly in the upper bracket 103. Because the upper bracket bracket 103 does not rotate about the shaft 110 because it is in a state.

This is because the lock 106 provided on the outside of the seat 101 is always kept in an initial state by a return spring (not shown), so that the lock gear 115 is connected to the lever 106 and the shaft 110. The pushing pin 121 and the auxiliary pin 122 of the cam 111 pushes the locking line 120 formed on the inner side of the lock gear 115, unless the lever 106 is operated in the unlocking direction. The lock gear 115 is pushed outward so that the gear 114 formed in the lock gear 115 is engaged with the gear 113 of the upper bracket 103.

When reclining the backrest of the seat 101 in such a state, when the lever 106 is pulled upward, the shaft 110 connected to the lever 106 is rotated to be coupled with the shaft 110 in a pulling initial state. The cam 111 is rotated in the same direction, and the pulling protrusion 124 formed to extend from the pushing pin 121 of the cam 111 is coupled to the locking groove 123 formed in the lock gear 115. .

At the same time, since the pulling protrusion 124 of the cam 111 rotates in a state of being engaged with the locking groove 123, the cam 111 pulls the lock gear 115 so that the gear 114 of the lock gear 115 is upper tooth. Reclining is possible because the bracket 103 is out of contact with the gear 113 formed in a circular shape.

In this way, when the seatback 132 is moved to the desired position, the lever 106 that is being pulled out is released, so that the lever 106 returns to its original position by the return spring that is expanded (retracted) in the contracted (wound) state. .

Then, the shaft 110 rotates in the opposite direction and the cam 111 coupled thereto also rotates in the opposite direction, so that the pulling protrusion 124 of the cam 111 inserted into the locking groove 123 of the lock gear 115 is rotated. Moves to the locking line 120 to push the lock gear 115 outward.

Therefore, the gear 114 of the lock gear 115 inserted between the plate holder 102 and the upper bracket 103 is in contact with the gear 113 formed in the upper bracket 103 in a circular shape, thus reclining. It is possible to maintain the state.

When the reclining state is maintained as described above, the pushing gear 121 and the auxiliary pin 122 formed on the cam 111 support the lock gear 115 in a stable state in the upper tooth bracket 103 direction so that the lock gear is supported. 61 and the bite state of the gears 113 and 114 formed in the upper bracket (103) can be optimized.

In addition, when the seat back 132 is in the forward folded state in close contact with the seat cushion 134 and the seat back 132 is to be returned to the initial state, the seat back 132 is held and pulled to the initial seating position. The free release protrusion 130 formed on the bottom surface of the lock gear 115 of one of the gears is rotated on the free release rail 133 which is further formed on the bottom surface 131 of the upper tooth bracket 103.

Therefore, the gear 114 of the lock gear 115 is not engaged with the gear 113 of the upper tooth bracket 103 until the release protrusion 130 leaves the free release rail 133. By being able to move to the position at once, several reclining adjustments are unnecessary to move the folded seatback 132 to the basic seating position as in the prior art.

In order to maintain the reclined state, the present invention is arranged in three directions so that the gear teeth can maintain the optimum bite state when the lock gear is engaged with the upper tooth bracket so that the lock gear is biased to one side with a stable support. By preventing the phenomenon, smooth reclining can be pursued, and user's convenience can be increased by moving the folded seatback to the initial (basic) seating position at once.

As described above, the present invention reduces the number of parts and improves productivity and assemblability while smoothly reclining and unclining, and increasing the user's convenience by returning the folded seat back to the basic seating position at once. Various effects can be obtained, such as to contribute to the improvement of quality and durability.

Claims (6)

In constructing an automobile seat reclining apparatus; The reclining apparatus 100 includes a plate holder 102 fixed to the inner end of the cushion frame of the seat 101; An upper tooth bracket 103 fixed to the lower end of the seat back frame; An operator (105) interposed between the plate holder (102) and the upper bracket (103) to perform substantial reclining and unclining operation; A plate holder (102) and an upper tooth bracket (103) interposed between the operator (105) are clamped with a retainer (104); The actuator 105 is coupled to the lever 106 which protrudes on the side of the seat 101 and is always returned to the locked state by the return spring, and is formed in the plate holder 102 and the abutus bracket 103. A cam 111 fixed to the shaft 110 penetrating 107; It is provided on the outer side of the cam 111 is received in the guide hole 112 of the plate holder 102 is connected to, separated by the gear 111 and the cam 111 formed on the inner diameter surface of the upper bracket (103). A lock gear 115 having a gear 114 formed on the outer surface such that reclining and unclining are selected; A pushing pin 121 connected to a locking line 120 formed on an inner surface of the lock gear 115 on an outer surface of the cam 111 to push the lock gear 115 outward to lock the push gear 121; It is characterized in that it comprises a pull projection 124 extending from the pushing pin 121 and coupled to the engaging groove 123 formed on the inner surface of the lock gear 115 to pull the lock gear 115 to select the unclining. Reclining apparatus for automobile seats made of. The method of claim 1; The cam 111 and the lock gear 115 is reclining apparatus for a vehicle seat, characterized in that arranged in three directions to maintain the most stable state. The method of claim 1; Protruding a free release protrusion (130) on a bottom surface of one of the lock gears (115) of the lock gear (115); The free release protrusion 130 may move to the standard seating position without sliding the folded seatback 132 by sliding the free release rail 133 formed on the bottom surface 131 of the upper bracket 103. Reclining apparatus for a car seat, characterized in that the. The method of claim 1; On the opposite side of the pushing pin 121, the reclining apparatus for a vehicle seat, further comprising an auxiliary pin 122 for pushing the other side of the lock gear 115 to maintain a stable locking state. The method of claim 3; The operating angle α of the free release rail 133 is the same as the basic seating angle α1 of the seat cushion 134 and the seat back 132 of the seat 101. Reclining device. The method of claim 3; The height (thickness) of the free release protrusion 130 and the free release rail 133 is formed so that the lock gear 115 does not deviate from the height (thickness) of the gear 113 of the upper tooth bracket 103. Reclining apparatus for automobile seats made of.