CN106696786A - Seat armrest and car seat - Google Patents

Abstract

The invention provides a seat armrest and a car seat. The seat armrest includes an armrest frame that is rotatably connected to the seat back frame through a rotating member; and a rotation limiting mechanism that can limit the rotation angle of the armrest frame. The limit mechanism includes a limit tooth arranged along the circumference of the rotating member and a guide rod that can rotate along the limit tooth and cooperate with the tooth groove of the limit tooth; the reset member, when the armrest skeleton rotates When the preset angle is reached, the reset member can drive the guide rod to be limited in the tooth slot, and when the armrest frame rotates, the reset member can drive the guide rod to break away from the tooth slot. The angle of the seat armrest described in the present invention is adjustable, and the seat armrest can be adjusted to a comfortable angle according to different angles of the seat backrest and different use states of the occupants, so the seat armrest can be stopped when the angle of the seat backrest changes. To the appropriate angle, thus ensuring the driving comfort of the occupants.

Description

Seat armrest and car seat

technical field

The invention relates to the technical field of automobile manufacturing, in particular to a seat armrest, and also relates to an automobile seat.

Background technique

To improve occupant comfort, car seats are equipped with armrests on both sides to allow the occupant to rest their arms or elbows on the armrests. At present, the seat armrest installed on the car seat back frame can only stay in two positions, that is, the use position (horizontal position) and the stowed position (vertical upward or vertical downward).

However, as the seat back is tilted forward or backward, the angle of the armrest connected to the backrest frame will also change accordingly, seriously affecting the driving comfort of the occupants.

In addition, when the above-mentioned seat armrest is changed between two positions, only one damping sheet is used to ensure the position of the armrest; as the use time increases, the damping effect will become worse and worse, and the acceleration or braking during driving will All may lead to the change of the position of the armrest, which affects the stability of the position of the armrest of the seat.

To sum up, how to keep the armrest of the seat at an appropriate angle when the angle of the seat back is changed, so as to ensure the driving comfort of the occupant, is a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

In view of this, the present invention aims to propose a seat armrest, so that when the angle of the seat back changes, the seat armrest stays at a suitable angle, thereby ensuring the driving comfort of the occupants.

In order to achieve the above object, the technical solution of the present invention is achieved in that:

A chair armrest, comprising:

An armrest frame that is rotatably connected to the seat back frame through a rotating part;

A rotation limiting mechanism that can limit the rotation angle of the armrest frame, the rotation limiting mechanism includes limiting teeth arranged along the circumference of the rotating member and can rotate along the limiting teeth and cooperate with the limiting teeth Guide rods for cogging of teeth;

A reset member, when the armrest skeleton rotates to a preset angle, the reset member can drive the guide rod to be limited in the tooth groove, and when the armrest skeleton rotates, the reset member can drive the guide rod out of the gullets.

Further, the rotating member is connected to the seat back frame through a base, the base is set on the seat back frame, and one of the limiting teeth and the guide rod is set on the base , and the other is set on the armrest frame.

Further, the position-limiting teeth are arranged on the base, and the guide rods are arranged on the armrest frame;

Wherein, the limit tooth is formed by a toothed guide rail set on the base, the side of the toothed guide rail close to the center of the circle is a tooth groove, and the other side is an arc-shaped slide that is slidably matched with the guide rod. noodle;

And the groove bottom of the tooth groove fits with the guide rod, the side surface on one side of the tooth groove is a guide surface extending along the lifting direction of the armrest skeleton, and the side surface on the other side is to prevent the handrail from The gravity of the frame causes the guide rod to slide out of the limiting surface.

Further, the center of circle of the toothed guide rail is located on the axis of the rotating member, and the circumferential angle of the toothed guide rail is 90°-180°.

Further, the rotating member is a rotating sleeve, one end of which is fixed on the base; rotatably arranged in the oblong hole of the skeleton, and the rotating sleeve can slide along the length direction of the oblong hole of the skeleton;

The reset member is arranged between the rotating sleeve and the armrest frame.

Further, the reset member is a compression spring, and the compression spring has an elastic force along the length direction of the armrest frame and drives the guide rod to be limited in the tooth groove. The compression spring and the guide rod respectively located on both sides of the rotating sleeve;

Wherein, a shaft core is rotatably sheathed in the rotating sleeve, a first spring limit column arranged radially is arranged on the outer wall of the shaft core, and a shaft for the first spring is provided on the rotating sleeve. The arc-shaped limit slot through which the spring limit post passes;

A baffle plate is provided at the end of the oblong hole of the skeleton away from the guide rod, a second spring limit post is provided on the baffle plate, and one end of the compression spring is sleeved on the first spring limit post, The other end is sleeved on the second spring limiting post, and when the shaft core is connected to the armrest frame, the first spring limiting post and the second spring limiting post are arranged opposite to each other.

Further, the rotating sleeve is also provided with an axial mounting hole through which the compression spring passes, and the axial mounting hole communicates with the arc-shaped limiting groove.

Further, the outer wall of the rotating sleeve is also provided with two radially arranged annular limiting protrusions, and the hole wall of the long circular hole of the skeleton is provided with arc-shaped holes for the annular limiting protrusions to pass through. The arc-shaped groove is located at the end of the skeleton oblong hole close to the baffle plate.

Further, the two end surfaces of the shaft core are respectively provided with a first installation limit column and a second installation limit column arranged in the axial direction, and the first installation limit column is rotatably arranged on the base On the other hand, the second installation limiting column is limited on the side of the skeleton oblong hole away from the base by cooperating with the blocking cover.

Compared with the prior art, the seat armrest of the present invention has the following advantages:

When the seat armrest of the present invention needs to adjust the angle, it drives the armrest frame to rotate around the rotating part relative to the seat back frame, and drives the guide rod to slide along the limit teeth; specifically, limited by the shape of the tooth groove, when the guide rod When it cannot slide out along the groove surface of the tooth groove, move the armrest skeleton forward or backward along the length direction of the armrest skeleton before turning the armrest skeleton, so that the reset member drives the guide rod to break away from the tooth groove where it is located; when the armrest skeleton rotates to At the comfortable angle required by the occupant, the guide rod slides to the corresponding position of the corresponding tooth slot, and then the armrest frame is released. The double function of the positioning mechanism ensures that the armrest of the seat stays at a comfortable angle.

In summary, the angle of the seat armrest of the present invention is adjustable, and the seat armrest can be adjusted to a comfortable angle according to different angles of the seat backrest and the different use states of the occupants, so the seat backrest can be adjusted to a comfortable angle when the angle of the seat backrest changes. The armrest of the seat stays at an appropriate angle, thereby ensuring the driving comfort of the occupant.

In addition, because the seat armrest of the present invention utilizes the dual functions of the reset member and the rotation limiting mechanism to ensure that the seat armrest stays in the corresponding position, the position limiting effect is better, and the seat can be guaranteed to be seated when accelerating or braking during driving. The stability of the position of the armrest; at the same time, the structure of the present invention is relatively simple, and the installation and operation are relatively convenient.

Another object of the present invention is to provide a car seat, so that when the angle of the seat back changes, the armrest of the seat stays at an appropriate angle, thereby ensuring the driving comfort of the occupant.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A car seat, comprising a seat back and two seat armrests arranged on both sides of the seat back, the seat armrests being the seat armrests described in any one of the above technical solutions.

Compared with the prior art, the car seat has the same advantages as the above-mentioned seat armrest, which will not be repeated here.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the three-dimensional structure schematic diagram of the chair armrest described in the embodiment of the present invention;

Fig. 2 is the A direction view in Fig. 1;

Fig. 3 is an exploded view of the chair armrest described in the embodiment of the present invention;

Fig. 4 is a schematic diagram of the installation of the seat armrest described in the embodiment of the present invention;

Fig. 5 is a schematic structural diagram of the base described in the embodiment of the present invention;

Fig. 6 is the B direction view among Fig. 5;

Fig. 7 is a schematic structural view of the shaft core described in the embodiment of the present invention;

Fig. 8 is a schematic structural view of the armrest skeleton described in the embodiment of the present invention;

Fig. 9 is the C direction view in Fig. 8;

Fig. 10 is a schematic diagram of upward adjustment of the armrest of the chair according to the embodiment of the present invention;

Fig. 11 is a schematic diagram of downward adjustment of the armrest of the chair according to the embodiment of the present invention;

Fig. 12 is a schematic diagram of an enlarged structure of part D in Fig. 11;

Fig. 13 is a schematic perspective view of the three-dimensional structure of the car seat according to the embodiment of the present invention.

Explanation of reference signs:

1-base, 11-mounting bracket, 2-toothed guide rail, 21-tooth groove, 3-rotating sleeve, 31-ring-shaped limit protrusion, 32-arc limit groove, 4-shaft core, 41-the first 1. Installation limit post, 42-second installation limit post, 43-first spring limit post, 5-guide rod, 6-compression spring, 7-blocking cover, 8-handrail skeleton, 81-skeleton oblong hole, 82-second spring limit column, 83-baffle plate, 01-seat backrest, 02-seat armrest.

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Please refer to accompanying drawings 1-12, the seat armrest that the embodiment of the present invention provides comprises armrest frame 8, rotating part, rotation limiting mechanism and resetting part; Armrest frame 8 is rotatably connected with seat back frame through rotating part; The mechanism can limit the rotation angle of the armrest frame 8, and the rotation limiting mechanism includes a limit tooth arranged along the circumference of the rotating member and a guide rod 5 that can rotate along the limit tooth and cooperate with the tooth groove 21 of the limit tooth; When the armrest frame 8 rotates to a preset angle, the reset member can drive the guide rod 5 to be limited in the tooth groove 21 , and when the armrest frame 8 rotates, the reset member can drive the guide rod 5 to break away from the tooth groove 21 .

When the seat armrest provided by the present invention needs to adjust the angle, it drives the armrest frame 8 to rotate around the rotating part relative to the seat back frame, and drives the guide rod 5 to slide along the limit tooth; specifically, limited by the shape of the tooth groove 21, when When the guide rod 5 cannot slide out along the groove surface of the tooth groove 21, before turning the armrest frame 8, move the armrest frame 8 forward or backward along the length direction of the armrest frame 8, so that the reset member drives the guide rod 5 to break away from its seat. tooth groove 21; when the armrest frame 8 rotates to the comfortable angle required by the occupant, the guide rod 5 slides to the corresponding position of the corresponding tooth groove 21, and then the armrest frame 8 is released, and under the action of the reset member, the guide rod 5 is driven to limit It is located in the corresponding tooth groove 21, thereby utilizing the dual functions of the reset member and the rotation limiting mechanism to ensure that the armrest of the seat stays at a position of a comfortable angle.

In summary, the angle of the seat armrest of the present invention is adjustable, and the seat armrest can be adjusted to a comfortable angle according to different angles of the seat backrest and the different use states of the occupants, so the seat backrest can be adjusted to a comfortable angle when the angle of the seat backrest changes. The armrest of the seat stays at an appropriate angle, thereby ensuring the driving comfort of the occupant.

In addition, because the seat armrest of the present invention utilizes the dual functions of the reset member and the rotation limiting mechanism to ensure that the seat armrest stays in the corresponding position, the position limiting effect is better, and the seat can be guaranteed to be seated when accelerating or braking during driving. The stability of the position of the armrest; at the same time, the structure of the present invention is relatively simple, and the installation and operation are relatively convenient.

In a preferred embodiment of the present invention, the rotating member is connected to the frame of the seat back through the base 1, the base 1 is arranged on the frame of the seat back, one of the limit tooth and the guide rod 5 is arranged on the base 1, and the other is arranged on the On armrest skeleton 8. Specifically, the base 1 is installed on the seat back frame through an installation bracket 11, as shown in FIG. 5, the installation bracket 11 is two convex edges arranged on the base 1, and has a simple structure and is convenient for installation. In this embodiment, the armrest frame 8 and the base 1 can be rotatably assembled through the rotating parts before being installed on the seat back frame, which is convenient for assembly.

The seat armrest of the above embodiment realizes the rotation of the armrest frame 8 relative to the seat back frame by driving the armrest frame 8 to rotate around the rotating member relative to the base 1 when the angle needs to be adjusted. Certainly, the present invention can also not be provided with a base, so that the armrest frame 8 is directly connected to the seat back frame through a rotating member.

In a specific embodiment of the present invention, the spacer tooth is arranged on the base 1, and the guide rod 5 is arranged on the armrest frame 8. Of course, it can also be set in reverse; Formed, the side of the toothed guide rail 2 close to the center of the circle is a tooth groove 21, and the other side is an arc-shaped sliding surface that is slidably matched with the guide rod 5. In this embodiment, the spacer teeth are formed by a toothed guide rail 2 (an arc-shaped groove) provided on the base 1. The side of the toothed guide rail 2 near the center of the circle is a toothed surface, and the two sides of the toothed surface Gullets 21 are formed between the teeth. Because the length dimension of the base 1 is small, the processing of the toothed guide rail 2 is facilitated. The above-mentioned toothed guide rail 2 can also be arranged on the armrest frame 8 , and correspondingly, the guide rod 5 is arranged on the base 1 .

Simultaneously, when guide rod 5 breaks away from tooth groove 21, guide rod 5 is positioned between the outer circle of the toothed surface and the arc-shaped sliding surface, and can slide along the arc-shaped sliding surface when armrest skeleton 8 rotates, thereby can Prevent the guide rod 5 from being too far away from the tooth groove 21, avoid the displacement of the guide rod 5, and ensure the reliability of the guide rod 5 rotation at the same time. It can be understood that the above-mentioned limiting teeth may also be formed by a single gear or a plurality of limiting grooves arranged along a straight line.

In order to ensure a better position-limiting effect, the groove bottom of the above-mentioned tooth groove 21 is fitted to the guide rod 5, and the side surface of the tooth groove 21 is a guide surface extending along the direction in which the handrail frame 8 is raised, and the side surface of the other side is a The limiting surface that prevents the guide rod 5 from slipping out due to the gravity of the armrest frame 8. As shown in Figure 1-6, in the toothed guide rail 2 arranged on the front side of the rotating part (the side close to the front of the car, that is, the right side in Figure 1), the guide surface is located in front of the limit surface in the direction of counterclockwise rotation. part, the guide surface extends along the counterclockwise rotation direction; the teeth arranged on the rear side of the rotating part (the side near the rear of the vehicle, that is, the left side in Figure 1, the toothed guide rail 2 on this side is not shown in the figure) In the shape guide rail 2, the guide surface is located at the front part of the limit surface along the clockwise rotation direction, and the guide surface extends along the clockwise rotation direction; while the limit surface cooperates with the arc-shaped groove bottom to realize lamination with the guide rod 5 Of course, the limiting surface can also be a plane extending radially of the rotating member.

In this embodiment, since the guide rod 5 and the tooth groove 21 fit together, the contact surface between the guide rod 5 and the tooth groove 21 is larger, and the limit effect is better; at the same time, the tooth groove 21 of this embodiment is used as a ratchet, and the guide rod 5 is used as a ratchet wheel. The ratchet, the two cooperate to form a ratchet mechanism for one-way intermittent movement, so that when the guide rod 5 rotates along the toothed guide rail 2, it can slide smoothly along the guide surface of the tooth groove 21, thereby reducing the friction between the guide rod 5 and the The noise generated by the collision between the toothed guide rails 2 can also avoid the situation that the guide rod 5 is detached from the tooth groove 21 due to the action of gravity, and the position reliability of the armrest frame 8 is improved. It can be understood that the above-mentioned guide rod 5 may not be in contact with the groove bottom of the tooth groove 21. For example, the shape of the tooth groove 21 is V-shaped, which can achieve the same restriction that the guide rod 5 can only face upward along the guide surface. The effect of sliding out of the tooth groove 21 is not specifically limited in the present invention.

In order to further facilitate processing, the center of circle of the toothed guide rail 2 is located on the axis of the rotating member, and the circumferential angle of the toothed guide rail 2 is 90°-180°. As shown in Figure 6, the circumferential angle of the toothed guide rail 2 of the present invention is 180°, which is in the shape of a semicircle, and the two lines at its two ends are along the vertical direction. Long, so, preferably, the toothed guide rail 2 is located at the front side of the rotating member (that is, the side close to the front of the car), which can better support the armrest frame 8 . At this time, the handrail skeleton 8 is driven to lift upwards, and the guide rod 5 is driven to break away from the tooth groove 21 along the guide surface of the tooth groove 21, and then when the handrail skeleton 8 is moved forward along the length direction, the guide rod 5 is then moved along the tooth shape. The outer circular surface of the guide rail 2 slides; it can be understood that the toothed guide rail 2 can also be located on the other side, and when the toothed guide rail 2 is positioned at the rear side of the rotating member (i.e., the side near the rear end), the handrail frame 8 is driven When moving backward along the length direction, the guide rod 5 can be driven to be located on the outer circular surface of the toothed guide rail 2 .

In this embodiment, the guide rod 5 is switched along the toothed guide rail 2 between the bottom end and the top end of the toothed guide rail 2. When the guide rod 5 is located in the tooth groove 21 at different positions, the armrest frame 8 can be positioned vertically. Down, horizontal setting, vertical upward or other positions between the three, covering multiple gear angles between 0°-180° of the armrest frame, expanding the adjustable angle of the seat armrest. The circumferential angle of the toothed guide rail 2 can also be 90° or 120°.

Moreover, the above-described embodiment makes the toothed guide rail 2 coaxial with the rotating part, at this time the tooth groove 21 is arranged circumferentially relative to the rotating part, and when the armrest skeleton 8 rotates around the rotating part, the guide rod 5 moves radially along the toothed guide rail 2 The distance is small, which is convenient for the adjustment of the 8 angles of the armrest frame. Of course, the toothed guide rail 2 of the present invention may not be coaxial with the rotating member.

Further, the rotating part is a rotating sleeve 3, and one end of the rotating sleeve 3 is fixed on the base 1, as shown in Figure 5; and the armrest frame 8 is provided with skeleton oblong holes 81 arranged along the length direction, as shown in Figure 8-9 As shown, the other end of the rotating sleeve 3 is rotatably arranged in the skeleton oblong hole 81, and the rotating sleeve 3 can slide along the length direction of the skeleton oblong hole 81; Between, as shown in FIG. 1 , when the guide rod 5 slides along the toothed guide rail 2 , the reset member can drive the rotating sleeve 3 to slide along the length direction of the skeleton oblong hole 81 . In the present invention, the structure is relatively simple by making the armrest frame 8 rotate around the rotating sleeve 3 relative to the base 1; certainly, the rotating sleeve 3 can also be arranged on the armrest frame 8, and the present invention can also utilize a rotating shaft that can only rotate as a rotating member , at this time, the guide rod 5 can move along the length direction of the armrest frame 8, and the elastic force of the reset member is directly applied to the guide rod 5 to drive the guide rod 5 to move into the tooth groove 21.

The above-mentioned reset member can be a shift block (manual control), an elastic steel sheet or a damping sheet. In order to facilitate the operation of passengers and ensure a long-term elastic force, the reset member is preferably a compression spring 6, which has a structure along the armrest frame 8. The length direction of the guide rod 5 is limited to the elastic force in the tooth groove 21, and the compression spring 6 and the guide rod 5 are respectively located on both sides of the rotating sleeve 3; as shown in Figure 3, the rotating sleeve 3 is rotatably inner sleeved with The shaft core 4, the outer wall of the shaft core 4 is provided with a radially arranged first spring limiting column 43, and the rotating sleeve 3 is provided with an arc-shaped limiting groove 32 for the first spring limiting column 43 to pass through; the skeleton One end of the oblong hole 81 away from the guide rod 5 is provided with a baffle plate 83, the baffle plate 83 is provided with a second spring limit post 82, one end of the compression spring 6 is sleeved on the first spring limit post 43, and the other end is sleeved On the second spring limiting post 82 , and when the shaft core 4 is connected to the armrest frame 8 , the first spring limiting post 43 and the second spring limiting post 82 are oppositely arranged. The compression spring 6 of the present invention always acts on the baffle plate 83 and the shaft core 4 in a compressed state, and the base 1 supports the shaft core 4 and indirectly supports the armrest frame 8 .

Specifically, limited by the shape of the tooth groove 21, when the guide rod 5 cannot slide out along the groove surface of the tooth groove 21, the present invention can move the armrest skeleton 8 forward or backward along the length direction of the armrest skeleton 8, so that The compression spring 6 is deformed to drive the guide rod 5 to break away from the cog 21 where it is located; when the handrail frame 8 is released, under the elastic force of the compression spring 6, the guide rod 5 will move into the cog 21 to be limited to the corresponding position. In the tooth groove 21, the double action of the compression spring 6 and the rotation limiting mechanism is used to ensure that the armrest of the seat stays at a comfortable angle.

When assembling, first install the shaft core 4 into the rotating sleeve 3, at this time the first spring limiting post 43 is located in the arc-shaped limiting groove 32, and then set one end of the compression spring 6 on the first spring limiting post 43, then the rotating sleeve 3 is inserted into the frame oblong hole 81 of the armrest frame 8, the other end of the compression spring 6 is sleeved on the second spring limit post 82, and finally the rotating sleeve 3 is limited to the frame oblong In the hole 81, the shaft core 4 can rotate in the rotating sleeve 3 at this time, and cannot be separated; the installation diagram is shown in Figure 4.

During application, when the armrest frame 8 rotates around the rotating sleeve 3 , the shaft core 4 will rotate with the compression spring 6 relative to the rotating sleeve 3 , and the compression spring 6 will rotate in the arc-shaped limiting groove 32 at this time. The present invention utilizes the first spring limiting column 43 and the second spring limiting column 82 to limit the axial direction of the compression spring 6 , which can reduce the radial movement of the compression spring 6 and improve the reliability of position limiting.

In order to ensure a better limiting effect, the above-mentioned compression spring 6 is further divided into two, and the first spring limiting column 43 and the second spring limiting column 82 are both two, and they are set in one-to-one correspondence. The elastic force that each compression spring 6 bears is small, which can further reduce the radial movement of the compression spring 6 due to the force, and ensure the reliability of the position of the guide rod 5 . Above-mentioned compression spring 6 also can be one, three or other number, should select according to the actual specification of seat armrest.

In order to facilitate the installation of the compression spring 6 , further, the rotating sleeve 3 is provided with an axial installation hole for the compression spring 6 to pass through, and the axial installation hole communicates with the arc-shaped limiting groove 32 . In this way, the compression spring 6 can be installed on the shaft core 4 first, and then the shaft core 4 is loaded into the rotating sleeve 3. At this time, the compression spring 6 is installed along the axial direction with the axial movement of the shaft core 4. The hole slides into the corresponding arc-shaped limiting groove 32. It can be understood that, in the present invention, the above-mentioned axial installation holes may not be provided, and the compression spring 6 is installed after the shaft core 4 is installed in the rotating sleeve 3 .

As shown in Figure 5, the outer wall of the rotating sleeve 3 is also provided with two radially arranged annular position-limiting protrusions 31, and the hole wall of the skeleton oblong hole 81 is provided with an arc for the annular position-limiting protrusions 31 to pass through. The arc-shaped groove is located at the end of the oblong hole 81 of the skeleton near the baffle plate 83 . In the present invention, when the rotating sleeve 3 is penetrated into the oblong hole 81 of the frame, the armrest frame 8 is positioned between the two annular stop protrusions 31, so that the axial movement of the rotating sleeve 3 can be avoided, and the sliding of the guide rod 5 can be ensured. reliability. Of course, the axial positioning of the rotating sleeve 3 can also be achieved by opening an arc-shaped groove, instead of the above-mentioned annular limiting protrusion 31 .

As shown in Figure 7, in a specific embodiment of the present invention, the two end faces of the shaft core 4 are respectively provided with a first installation limit column 41 and a second installation limit column 42 arranged in the axial direction, the first installation limit column The positioning column 41 is rotatably arranged on the base 1, and the second installation limiting column 42 is limited to the side of the skeleton oblong hole 81 away from the base 1 by cooperating with the blocking cover 7. 42 The installation hole of interference fit, when assembling, the blocking cover 7 is enclosed within the second installation limit post 42 and gets final product. In the present invention, after the rotating sleeve 3 is penetrated into the oblong hole 81 of the frame, the blocking cover 7 is installed on the second installation limit post 42, thereby fixing the shaft core 4, the structure is simple, and the installation is convenient. Of course, the second installation limiting column 42 can also be limited on the side of the skeleton oblong hole 81 away from the base 1 by using bolts or stoppers.

The application process of the chair armrest of the present invention is as follows:

When the armrest needs to be adjusted upwards, due to the effect of the guide surface of the tooth groove 21, only the armrest frame 8 needs to be rotated upwards, and due to the effect of the compression spring 6, it is ensured that the guide rod 5 is always matched with the tooth groove 21 of the toothed guide rail 2, Make the armrest stay in the use position of any gear angle, the specific operation is shown in Figure 10;

When the seat back 01 is tilted backward and the occupant is resting, the armrest needs to be adjusted downward. Due to the use of the limit surface of the tooth groove 21, the armrest frame 8 first needs to be turned upward to make the guide rod 5 break away from the tooth groove 21, and then move along the Drag the armrest frame 8 forward along the length direction of the armrest frame 8. When the guide rod 5 is in contact with the outer circular surface of the toothed guide rail 2, the armrest frame 8 can be adjusted downward along the rotating sleeve 3 to a suitable position. Finally, release the handrail frame 8, and the action of the compression spring 6 ensures that the guide rod 5 cooperates with the tooth groove 21 of the toothed guide rail 2, thereby ensuring that the handrail stays in a proper position. The specific operation is shown in Figure 11-12.

As shown in Figure 13, the embodiment of the present invention also provides a car seat, including a seat back 01 and two seat armrests 02 arranged on both sides of the seat back 01, the seat armrest 02 is any one of the above-mentioned implementations The seat armrest provided in the example can stop the seat armrest 02 at an appropriate angle when the angle of the seat back 01 changes, thereby ensuring the driving comfort of the occupants. The advantages are brought by the seat armrest. Please refer to the details Refer to relevant parts in the foregoing embodiments, and details are not repeated here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. a kind of armrest, it is characterised in that including：

The armrest skeleton (8) being connected is rotated with seat back-rest framework by tumbler；

The rotating and limiting mechanism of the rotational angle of the armrest skeleton (8), the rotary spacing can be limited Mechanism include along the tumbler circumferentially disposed limiting tooth and can along the limiting tooth rotation and with it is described The guide rod (5) that the teeth groove (21) of limiting tooth coordinates；

Return unit, when the armrest skeleton (8) turns to predetermined angle, the return unit can order about institute Guide rod (5) is stated to be limited in the teeth groove (21), it is described when the armrest skeleton (8) is rotated Return unit can order about the guide rod (5) and depart from the teeth groove (21).

2. armrest according to claim 1, it is characterised in that the tumbler passes through base (1) it is connected with the seat back-rest framework, the base (1) is arranged on the seat back-rest framework, One in the limiting tooth and the guide rod (5) is arranged on the base (1), another setting In on the armrest skeleton (8).

3. armrest according to claim 2, it is characterised in that the limiting tooth is arranged at institute State on base (1), the guide rod (5) is arranged on the armrest skeleton (8)；

Wherein, the limiting tooth is formed by the tooth form guide rail (2) being opened on the base (1), institute The side that tooth form guide rail (2) is stated near the center of circle is the teeth groove (21), and opposite side is and the guide rod (5) The arc-shaped sliding surface being slidably matched；

And the bottom land of the teeth groove (21) is fitted with the guide rod (5), teeth groove (21) side Side is the spigot surface that the direction lifted along the armrest skeleton (8) extends, and the side of opposite side is to prevent Because the gravity of the armrest skeleton (8) causes the confined planes that the guide rod (5) skids off.

4. armrest according to claim 3, it is characterised in that the tooth form guide rail (2) The center of circle be located at the tumbler axis on, and the tooth form guide rail (2) circumferential angle be 90 ° -180 °.

5. armrest according to claim 3, it is characterised in that the tumbler is turning set Cylinder (3), one end of the rotational sleeve (3) is fixed on the base (1)；The armrest skeleton (8) be provided with the skeleton slotted hole (81) arranged along its length, the rotational sleeve (3) it is another One end is rotatablely arranged in the skeleton slotted hole (81), and the rotational sleeve (3) being capable of edge The length direction of the skeleton slotted hole (81) is slided；

The return unit is arranged between the rotational sleeve (3) and the armrest skeleton (8).

6. armrest according to claim 5, it is characterised in that the return unit is compression bullet Spring (6), the compression spring (6) is with the length direction along the armrest skeleton (8) and orders about institute State the elastic force that guide rod (5) is limited in the teeth groove (21), the compression spring (6) and described Guide rod (5) is respectively positioned at the both sides of the rotational sleeve (3)；

Wherein, shaft core (4), the shaft core (4) are rotationally arranged with the rotational sleeve (3) The first radially arranged spring retainer post (43) is provided with outer wall, is opened on the rotational sleeve (3) It is provided with the arc-shaped limit groove (32) passed through for the first spring retainer post (43)；

The skeleton slotted hole (81) is provided with baffle plate (83), institute away from one end of the guide rod (5) State and second spring limited post (82) is provided with baffle plate (83), one end set of the compression spring (6) It is located on the first spring retainer post (43), the other end is set in the second spring limited post (82) On, and when the shaft core (4) is connected with the armrest skeleton (8), the first spring retainer post (43) it is oppositely arranged with the second spring limited post (82).

7. armrest according to claim 6, it is characterised in that the rotational sleeve (3) On be further opened with the axially mounted hole that passes through for the compression spring (6), the axially mounted hole with it is described Arc-shaped limit groove (32) is connected.

8. the armrest according to claim 6 or 7, it is characterised in that the rotational sleeve (3) Outer wall on be additionally provided with two annular stop projections (31) being radially arranged, the skeleton slotted hole (81) Hole wall on be provided with for the annular stop projection (31) deep-slotted chip breaker that passes through, the deep-slotted chip breaker is located at The skeleton slotted hole (81) is near one end of the baffle plate (83).

9. armrest according to claim 8, it is characterised in that the two of the shaft core (4) Axially disposed the first installation limited post (41) and second is respectively arranged with individual end face limited post is installed (42), first installation limited post (41) is rotatably arranged on the base (1), described Second installation limited post (42) is limited in the skeleton slotted hole (81) far by coordinating with blanking cover (7) From the side of the base (1).

10. a kind of automotive seat, including backrest and two seats for being arranged on the backrest both sides Armrest of seat, it is characterised in that the armrest is the armrest as described in claim any one of 1-9.