CN217906955U

CN217906955U - Seat return mechanism

Info

Publication number: CN217906955U
Application number: CN202221773559.4U
Authority: CN
Inventors: 梁啟文
Original assignee: Guangdong Yangguang Shiji Intelligent Household Technology Co ltd
Current assignee: Guangdong Yangguang Shiji Intelligent Household Technology Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-29
Anticipated expiration: 2032-07-11

Abstract

The utility model relates to the technical field of seat installation, in particular to a seat return mechanism, which comprises an outer sleeve part, an active rotating part, a follow-up rotating part, a reset rotating part and an elastic part; the outer sleeve part, the driving rotating part and the follow-up rotating part are sleeved from outside to inside in sequence, and both the driving rotating part and the follow-up rotating part can rotate relative to the outer sleeve part; the driving rotating piece is provided with a guide channel, the fixed end of the resetting rotating piece is inserted and fixed in the follow-up rotating piece through the guide channel, the resetting rotating piece and the follow-up rotating piece move synchronously, and the follow-up rotating piece moves up and down relative to the driving rotating piece along the guide channel; a spiral ramp is arranged in the outer sleeve piece, the rotating end of the reset rotating piece is abutted against the spiral ramp, and a rotating shaft of the rotating end is vertical to rotating shafts of the driving rotating piece and the follow-up rotating piece; the elastic member is disposed inside the driving rotating member and the driven rotating member. The utility model discloses under the prerequisite that does not influence the normal rotation use of swivel chair, self return when not using can.

Description

Seat return mechanism

Technical Field

The utility model relates to a seat installation technical field especially relates to a seat return mechanism.

Background

The forebody of the swivel chair is a Windsor chair, which originates from Windsor which should be a small town, and the 18 th century begins to move from Windsor town to London. In 1775, jeffeson stares at a family Windsor chair, and the Jeffeson stares at the family chair, and the Jefferson chair is transformed to realize the effects of fixing the lower half part and rotating the upper half part, namely the swivel chair of the first generation. However, with the improvement of living standard, people do not need to be satisfied with the rotation of the seat any more, and whether the seat can automatically return after rotating is a problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seat return mechanism under the prerequisite that does not influence the swivel chair normal rotation use, can be when not using self return.

To achieve the purpose, the utility model adopts the following technical proposal:

a seat return mechanism comprises an outer sleeve part, a driving rotating part, a follow-up rotating part, a return rotating part and an elastic part;

the outer sleeve part, the driving rotating part and the follow-up rotating part are sleeved from outside to inside in sequence, and both the driving rotating part and the follow-up rotating part can rotate relative to the outer sleeve part;

the driving rotating piece is provided with a guide channel, the resetting rotating piece is provided with a rotating end and a fixed end, the fixed end is inserted and fixed on the follow-up rotating piece through the guide channel, the resetting rotating piece and the follow-up rotating piece move synchronously, and the follow-up rotating piece moves up and down relative to the driving rotating piece along the guide channel;

a spiral ramp is arranged in the outer sleeve piece, the rotating end abuts against the spiral ramp, and a rotating shaft of the rotating end is perpendicular to rotating shafts of the driving rotating piece and the driven rotating piece;

the elastic piece is arranged inside the driving rotating piece and the follow-up rotating piece, one end of the elastic piece is fixedly connected to the inner end face of the driving rotating piece, and one end of the elastic piece is fixedly connected to the inside of the follow-up rotating piece.

Preferably, the driving rotating member is sequentially divided into a fixing section and a connecting section from top to bottom, the fixing section of the driving rotating member is fixedly provided with a seat cushion of the seat, and the connecting section of the driving rotating member is rotatably arranged in the outer sleeve member through a bearing set.

Preferably, an annular flange is arranged inside the outer sleeve member, and the lower end face of the annular flange is the spiral ramp;

the center of the annular flange is provided with a mounting hole, and the connecting section penetrates through the mounting hole.

Preferably, the spiral ramps comprise two groups of symmetrical spiral ramps, the two groups of spiral ramps are arranged in an angle of 180 degrees, the highest points of the two groups of spiral ramps are connected with each other, the lowest points of the two groups of spiral ramps are connected with each other, and the two groups of spiral ramps form an annular structure.

Preferably, the highest point of the two sets of spiral ramps is an initial position, and the lowest point of the two sets of spiral ramps is a return position.

Preferably, the bearing set comprises an upper bearing and a lower bearing;

the inner wall of the outer sleeve part is provided with an upper clamping ring groove and a lower clamping ring groove;

the diameter of the fixed section is larger than that of the connecting section of the driving rotating piece, and the joint of the fixed section and the connecting section is an abutting clamping ring groove;

the upper bearing with the bearing is all established down the outer wall of initiative rotating member, the upper bearing card is located go up the snap ring groove with between the butt snap ring groove, the bearing card is located down snap ring groove.

Preferably, the starting end of the guide channel is located at the connecting section, and the terminal end of the guide channel penetrates through the connecting section downwards;

the outer wall of the follow-up rotating piece is convexly provided with a guide lug, the guide lug is matched with the guide channel, and the length of the guide lug is smaller than that of the guide channel;

the guide lug is provided with a fixing hole, and the fixing hole penetrates through the side wall of the follow-up rotating piece.

Preferably, a transverse cylinder is arranged inside the follow-up rotating part, one end of the transverse cylinder is fixedly connected to the fixing hole, and the other end of the transverse cylinder is fixedly connected to the inner wall of the follow-up rotating part;

the transverse cylinder is provided with an extension hole communicated with the fixing hole.

Preferably, the rotating part that resets includes bolt and reset bearing, the one end of bolt is fixed in reset bearing's center, the other end of bolt is the stiff end, reset bearing does the rotation end.

One of the above technical solutions has the following beneficial effects: when the utility model is implemented specifically, the upper end face of the active rotating part of the utility model is fixedly connected with the bottom of the seat cushion of the seat, the lower end part of the outer sleeve part is fixedly connected with the chair feet of the seat, in the using process, when external force acts on the seat cushion of the seat, the seat cushion of the seat is rotated while the chair feet of the seat are not moved, the active rotating part is driven to rotate by a corresponding angle in the outer sleeve part, and the reset rotating part and the follow-up rotating part can change in two directions at the moment; (2) Because the inside of the outer sleeve part is provided with the spiral ramp, and the rotating end of the reset rotating part is abutted against the spiral ramp, the follow-up rotating part and the reset rotating part can move up and down relative to the active rotating part due to the limitation of the guide channel of the active rotating part while rotating. When the external force is cancelled on the seat cushion of the seat, the rotation and the automatic return are realized due to the action of the stretching force and the restoring force of the elastic piece.

Drawings

Fig. 1 is a schematic structural view of a seat return mechanism of the present invention;

fig. 2 is a schematic cross-sectional view of the seat return mechanism of the present invention;

fig. 3 is an exploded view of the seat return mechanism of the present invention;

fig. 4 is a schematic top view of the outer member of the seat return mechanism of the present invention;

FIG. 5 isbase:Sub>A schematic cross-sectional view A-A of FIG. 4;

fig. 6 is a schematic structural view of the driving rotating member of the seat return mechanism of the present invention;

fig. 7 is a schematic structural view of a follow-up rotating member of the seat return mechanism of the present invention;

fig. 8 is a schematic cross-sectional view of the follower rotary member of the seat return mechanism of the present invention;

fig. 9 is a schematic structural view of the return rotating member of the seat return mechanism of the present invention;

in the drawings: the outer sleeve part 1, the driving rotating part 2, the follow-up rotating part 3, the reset rotating part 4, the elastic part 5, the annular flange 10, the spiral ramp 11, the initial position 12, the return position 13, the upper snap ring groove 14, the lower snap ring groove 15, the guide channel 21, the abutting snap ring groove 22, the guide lug 31, the fixing hole 32, the transverse cylinder 33, the extension hole 34, the bolt 41, the reset bearing 42, the upper bearing 61, the lower bearing 62, the mounting hole 100, the fixing section 201, the connecting section 202, the rotating end 401 and the fixing end 402.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 9, a seat return mechanism comprises an outer sleeve member 1, a driving rotating member 2, a following rotating member 3, a return rotating member 4 and an elastic member 5;

the outer sleeve member 1, the driving rotating member 2 and the follow-up rotating member 3 are sleeved from outside to inside in sequence, and both the driving rotating member 2 and the follow-up rotating member 3 can rotate relative to the outer sleeve member 1;

the driving rotating part 2 is provided with a guide channel 21, the resetting rotating part 4 is provided with a rotating end 401 and a fixed end 402, the fixed end 402 is inserted and fixed in the following rotating part 3 through the guide channel 21, the resetting rotating part 4 and the following rotating part 3 move synchronously, and the following rotating part 3 moves up and down relative to the driving rotating part 2 along the guide channel 21;

a spiral ramp 11 is arranged inside the outer sleeve member 1, the rotating end 401 abuts against the spiral ramp 11, and a rotating shaft of the rotating end 401 is perpendicular to rotating shafts of the driving rotating member 2 and the following rotating member 3;

the elastic part 5 is arranged inside the driving rotating part 2 and the follow-up rotating part 3, one end of the elastic part 5 is fixedly connected to the inner end face of the driving rotating part 2, and one end of the elastic part 5 is fixedly connected to the inside of the follow-up rotating part 3.

When the structure is implemented, the upper end surface of the active rotating member 2 of the present invention is fixedly connected with the bottom of the seat cushion of the seat, the lower end of the outer sleeve member 1 is fixedly connected with the legs of the seat, when an external force acts on the seat cushion of the seat, the seat cushion of the seat rotates and the legs of the seat do not move, so that the active rotating member 2 is driven to rotate by a corresponding angle in the outer sleeve member 1, and the reset rotating member 4 and the follower rotating member 3 change in two directions, including (1) because the fixed end 402 of the reset rotating member 4 is inserted and fixed in the follower rotating member 3 through the guide channel 21 of the active rotating member 2, the follower rotating member 3 and the reset rotating member 4 rotate with following; (2) Since the spiral ramp 11 is provided inside the outer sleeve member 1, and the rotating end 401 of the reset rotary member 4 abuts against the spiral ramp 11, the follow-up rotary member 3 and the reset rotary member 4 rotate, and at the same time, the follow-up rotary member 3 and the reset rotary member 4 move up and down relative to the driving rotary member 2 due to the restriction of the guide passage 21 of the driving rotary member 2. When the external force is cancelled on the seat cushion of the seat, the elastic piece 5 rotates to return automatically due to the action of the stretching force and the restoring force.

In a further description, the driving rotating member 2 is sequentially divided into a fixed section 201 and a connecting section 202 from top to bottom, the fixed section 201 of the driving rotating member 2 is fixedly installed with a seat cushion of a seat, and the connecting section 202 of the driving rotating member 2 is rotatably installed inside the outer sleeve member 1 through a bearing set. The driving rotation member 2 is divided into a fixed section 201 and a connecting section 202 from top to bottom in sequence, so that each section can perform its own function. Meanwhile, the bearing set can ensure that the axial positions of the driving rotating part 2 and the outer sleeve part 1 are unchanged.

In further detail, an annular flange 10 is arranged inside the outer sleeve member 1, and the lower end surface of the annular flange 10 is the spiral ramp 11;

the center of the annular flange 10 is provided with a mounting hole 100, and the connecting section 202 is arranged through the mounting hole 100. The mounting hole 100 of the annular flange 10 can limit the active rotating member 2, and further ensure that the axial position of the active rotating member 2 and the outer sleeve member 1 is unchanged.

Further, the spiral ramps 11 include two symmetrical spiral ramps, the two spiral ramps 11 are both arranged at 180 °, the highest points of the two spiral ramps 11 are connected to each other, the lowest points of the two spiral ramps 11 are connected to each other, and the two spiral ramps 11 form an annular structure.

In a further description, the highest point of the two sets of spiral ramps is the initial position 12, and the lowest point of the two sets of spiral ramps is the return position 13. In an initial state, the rotating end 401 of the reset rotating member 4 is located at the initial position 12 and can rotate along two directions of the symmetrical spiral ramp 11, that is, the seat can rotate towards two directions, so that the rotating practicability of the seat is met; when the seat is rotated by 180 °, the rotating end 401 of the return rotating member 4 is located at the return position 13; when the seat is rotated through 360 °, the rotating end 401 of the return swivel 4 is located again in the initial position 12. When the seat rotates 0-360 degrees, the elastic element 5 is stretched to different degrees, so that under the action of no external force, the restoring force of the elastic element 5 enables the rotating end 401 of the resetting rotating element 4 to automatically return to the initial position 12 along the nearest resetting route, and the resetting is automatically completed.

Stated further, the bearing set includes an upper bearing 61 and a lower bearing 62;

the inner wall of the outer sleeve part 1 is provided with an upper snap ring groove 14 and a lower snap ring groove 15;

the diameter of the fixed section 201 is larger than that of the connecting section 202 of the driving rotating part 2, and the joint of the fixed section 201 and the connecting section 202 is an abutting clamping ring groove 22;

go up bearing 61 with bearing 62 all overlaps and establish the outer wall of initiative rotating member 2 down, go up bearing 61 card and locate go up card annular groove 14 with between the butt card annular groove 22, lower bearing 62 card is located lower card annular groove 15.

It is well known that bearings are an important part of modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The utility model discloses an it is in to guarantee initiative rotating member 2 with two bearings of lower bearing 61 in the outer rotating precision in the cover 1, simultaneously the card of upper bearing 61 is located go up snap ring groove 14 with between the butt snap ring groove 22, guarantee initiative rotating member 2 with the axial position of cover 1 is unchangeable.

To explain further, the starting end of the guiding channel 21 is located at the connecting section 202, and the terminal end of the guiding channel 21 penetrates through the connecting section 202 downwards;

a guide convex block 31 is convexly arranged on the outer wall of the follow-up rotating piece 3, the guide convex block 31 is matched with the guide channel 21, and the length of the guide convex block 31 is smaller than that of the guide channel 21;

the guide protrusion 31 is provided with a fixing hole 32, and the fixing hole 32 penetrates through the side wall of the follow-up rotation member 3.

In a further description, a transverse cylinder 33 is arranged inside the follow-up rotating member 3, one end of the transverse cylinder 33 is fixedly connected to the fixing hole 32, and the other end of the transverse cylinder 33 is fixedly connected to the inner wall of the follow-up rotating member 3;

the transverse cylinder 33 is provided with an extension hole 34 communicated with the fixing hole 32.

Since stress transformation exists at the joint of the rotating end 401 and the fixed end 402 of the resetting rotating member 4 in the rotating process, when the stress is too large, the resetting rotating member is easy to break; the reset rotary member 4 is inserted and fixed in the fixing hole 32 and the extending hole 34 through the guide channel 21, so that the reset rotary member 4 can be prevented from being broken due to stress during rotation by corresponding protection of the guide projection 31 and the transverse cylinder 33.

In addition, the guide projection 31 is matched with the guide channel 21, so that the follow-up rotating piece 3 can move up and down along the guide channel 21 in the rotating process, and the rotating process and the returning process are completed.

In a further description, the reset rotating member 4 includes a bolt 41 and a reset bearing 42, one end of the bolt 41 is fixed at the center of the reset bearing 42, the other end of the bolt 41 is the fixed end 402, and the reset bearing 42 is the rotating end 401.

The reset bearing 42 and the bolt 41 are combined to form bearing rolling motion, so that the friction resistance between the reset bearing 42 and the symmetrical spiral ramp 11 can be reduced, and the transmission efficiency is improved.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. A seat return mechanism is characterized by comprising an outer sleeve part, a driving rotating part, a following rotating part, a return rotating part and an elastic part;

a spiral ramp is arranged in the outer sleeve part, the rotating end is abutted against the spiral ramp, and a rotating shaft of the rotating end is perpendicular to rotating shafts of the driving rotating part and the driven rotating part;

the elastic part is arranged in the driving rotating part and the follow-up rotating part, one end of the elastic part is fixedly connected to the inner end face of the driving rotating part, and one end of the elastic part is fixedly connected to the interior of the follow-up rotating part.

2. The seat return mechanism as claimed in claim 1, wherein the active rotary member is divided into a fixed section and a connecting section from top to bottom, the fixed section of the active rotary member is fixedly installed with a seat cushion of the seat, and the connecting section of the active rotary member is rotatably installed inside the outer sleeve member through a bearing set.

3. A seat return mechanism according to claim 2, wherein the outer sleeve member is provided with an annular flange on the inside thereof, and the lower end surface of the annular flange is the spiral ramp;

4. The seat returning mechanism of claim 3, wherein the spiral ramps comprise two symmetrical sets of spiral ramps, the two sets of spiral ramps are arranged at 180 °, the highest points of the two sets of spiral ramps are connected with each other, the lowest points of the two sets of spiral ramps are connected with each other, and the two sets of spiral ramps form a ring structure.

5. The seat return mechanism according to claim 4, wherein the highest point of the two sets of spiral ramps is the initial position and the lowest point of the two sets of spiral ramps is the return position.

6. The seat return mechanism of claim 2, wherein the bearing set includes an upper bearing and a lower bearing;

the upper bearing with the bearing is all established and is established the outer wall of initiative rotating member down, the upper bearing card is located go up the snap ring groove with between the butt snap ring groove, the bearing card is located down snap ring groove.

7. A seat return mechanism as claimed in claim 2 wherein the guide channel has a start end located at the connecting section and a finish end extending downwardly through the connecting section;

8. The seat return mechanism according to claim 7, wherein a transverse cylinder is arranged inside the follow-up rotating member, one end of the transverse cylinder is fixedly connected to the fixing hole, and the other end of the transverse cylinder is fixedly connected to an inner wall of the follow-up rotating member;

the transverse cylinder is provided with an extending hole communicated with the fixing hole.

9. The seat return mechanism of claim 1, wherein the return rotating member includes a pin and a return bearing, one end of the pin is fixed to a center of the return bearing, the other end of the pin is the fixed end, and the return bearing is the rotating end.