CN220494631U

CN220494631U - Gear adjusting mechanism and seat

Info

Publication number: CN220494631U
Application number: CN202322218543.8U
Authority: CN
Inventors: 罗慧平; 曹旭林; 周伟祥; 胡楚榕
Original assignee: Shenzhen Xihao Intelligent Furniture Co ltd
Current assignee: Shenzhen Xihao Intelligent Furniture Co ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-02-20
Anticipated expiration: 2033-08-16

Abstract

The utility model discloses a gear adjusting mechanism and a seat, wherein the gear adjusting mechanism comprises an outer shell, a movable body and a positioning assembly; the movable body is movably penetrated through the outer shell and is provided with a first end and a second end which are opposite, the side wall of the movable body is provided with a plurality of gear grooves which are arranged at intervals, an avoidance groove which is positioned at one side of the plurality of gear grooves, and a guide groove which is positioned at the other side of the plurality of gear grooves, the plurality of gear grooves are arranged at intervals along the direction from the first end to the second end, and the passage port of each gear groove faces the avoidance groove and is communicated with the avoidance groove; the positioning component is arranged in the outer shell and is connected with the outer shell; the first gear groove is provided with a gear wall and a guide wall, the gear wall is arranged opposite to the passage opening of the first gear groove, one end of the guide wall is connected with the gear wall, the other end of the guide wall extends towards the passage opening of the first gear groove, the end part of the avoidance groove, which is close to the first end, is provided with a limiting wall, and the limiting wall is located on one side of the guide wall, which is close to the first end.

Description

Gear adjusting mechanism and seat

Technical Field

The utility model relates to the technical field of seats, in particular to a gear adjusting mechanism and a seat.

Background

To accommodate users of different sizes, most chairs are designed with various adjustment functions, most commonly including but not limited to seat back, armrest, and headrest position adjustment.

Taking the gear adjusting mechanism capable of carrying out lifting adjustment on the handrail in the market at present as an example, when the handrail needs to be lifted, the handrail needs to be pulled up, so that the gear of the handrail is adjusted at one level, when the handrail is pulled to the highest gear, the handrail is pulled for a certain stroke and released, and the handrail can automatically descend to be restored to the lowest gear. Therefore, if the user needs to adjust the armrest to the highest gear, the user needs to carefully control the force of the wing, and if the force is too large, the user can go beyond the last gear, so that the armrest is directly restored to the lowest gear, and the use experience of the user is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the gear adjusting mechanism provided by the utility model can avoid the situation that the gear returns to the lowest gear due to excessive force when a user adjusts the gear to the highest gear, and improves the use experience of the user.

The utility model further provides a seat with the gear adjusting mechanism.

The gear adjusting mechanism comprises an outer shell, a movable body and a positioning assembly; the movable body is movably arranged on the outer shell in a penetrating manner, the movable body is provided with a first end and a second end which are opposite, the side wall of the movable body is provided with a plurality of gear grooves arranged at intervals, an avoidance groove positioned at one side of the gear grooves and a guide groove positioned at the other side of the gear grooves, the gear grooves are arranged at intervals along the direction from the first end to the second end, and the passage port of each gear groove faces to the avoidance groove and is communicated with the avoidance groove;

the positioning component is arranged in the outer shell and is connected with the outer shell;

the gear groove closest to the first end is a first gear groove, the gear groove adjacent to the first gear groove is a second gear groove, and the gear groove closest to the second end is a third gear groove;

the first gear groove is provided with a gear wall and a guide wall, the gear wall is arranged opposite to the passage opening of the first gear groove, one end of the guide wall is connected with the gear wall, the other end of the guide wall extends towards the passage opening of the first gear groove, the end part, close to the first end, of the avoidance groove is provided with a limiting wall, and the limiting wall is located on one side, close to the first end, of the guide wall;

the positioning assembly clamped in the second gear groove enters the avoiding groove when the movable body moves towards the outer part of the outer shell until the movable body abuts against the limiting wall; the positioning assembly propped against the limiting wall automatically enters the first gear groove until propping against the gear wall; the positioning component which is propped against the gear wall enters the guide groove along the gear wall when the movable body moves towards the outside of the outer shell; the positioning assembly entering the guide groove slides into the avoidance groove along the guide groove and enters the third gear groove when the movable body moves towards the inside of the outer shell.

The gear adjusting mechanism provided by the embodiment of the utility model has at least the following beneficial effects:

when the gear adjusting mechanism is used, when the positioning component is clamped in the second gear groove and the movable body needs to be lifted to the highest gear, the movable body can be pulled out, the positioning component can enter the avoiding groove from the second gear groove in the process of pulling the movable body, the limiting wall moves towards the positioning component until the limiting wall abuts against the positioning component along with the fact that the movable body is pulled out continuously, and after the positioning component is blocked by the limiting wall, the positioning component can automatically slide into the first gear groove until the positioning component abuts against the blocking wall, and at the moment, the movable body is lifted to the highest gear.

In the gear adjusting mechanism, in the process of lifting the movable body to the highest gear, the limiting wall can block the positioning component, and after the positioning component is blocked by the limiting wall, the positioning component can slide into the first gear groove until the positioning component is propped against the limiting wall, so that when the movable body is required to be lifted to the highest gear, no matter how much force is used, the movable body is positioned at the highest gear first, and the situation that the movable body returns to the lowest gear due to overlarge force when the movable body is lifted to the highest gear can be avoided.

When the movable body positioned at the highest gear needs to be reset to the lowest gear, the movable body only needs to be pulled outwards, so that the positioning assembly can enter the guide groove along the gear wall, then the positioning assembly can enter the avoidance groove along the guide groove, and then the positioning assembly enters the third gear groove, so that the movable body is positioned at the lowest gear.

According to some embodiments of the utility model, the guide wall is disposed at an angle to the gear wall, the guide wall is gradually disposed obliquely to the second end along a preset direction, the gear wall is gradually disposed obliquely to the first end along the preset direction, and a side of the guide wall near the second end is connected to a side of the gear wall near the second end;

the preset direction is the arrangement direction from the avoidance groove to the guide groove.

According to some embodiments of the utility model, the limiting wall is gradually inclined towards the second end along the preset direction.

According to some embodiments of the utility model, the movable body is further provided with a first transition groove, one end of the first transition groove is communicated with one end of the avoidance groove close to the first end, and the other end of the first transition groove is communicated with one end of the guide groove close to the first end;

the guide wall and the limiting wall are two side walls which are oppositely arranged in the first transition groove.

According to some embodiments of the utility model, the movable body is further provided with a second transition groove, one end of the second transition groove is communicated with one end of the avoidance groove close to the second end, and the other end of the second transition groove is communicated with one end of the guide groove close to the second end.

According to some embodiments of the utility model, the positioning assembly comprises a positioning member movably connected with the outer housing, and an elastic member connected with the outer housing, the elastic member being further connected with the positioning member, the elastic member being configured to cause the positioning member located in the escape slot to have a tendency to swing toward the guide slot;

the positioning piece clamped in the second gear groove enters the avoiding groove when the movable body moves towards the outer part of the outer shell until the movable body abuts against the limiting wall; the positioning piece propped against the limiting wall enters the first gear groove under the action of the elastic piece until propping against the gear wall; the positioning piece which is propped against the gear wall enters the guide groove along the gear wall when the movable body moves towards the outside of the outer shell; the positioning piece entering the guide groove slides into the avoidance groove along the guide groove and enters the third gear groove when the movable body moves towards the inside of the outer shell.

According to some embodiments of the utility model, the positioning member is rotatably connected with the outer housing, a positioning portion is provided on the positioning member, and the elastic member is used for enabling the positioning portion located in the avoidance groove to have a tendency to swing towards the guide groove;

the positioning part clamped in the second gear groove enters the avoiding groove when the movable body moves towards the outside of the outer shell until the movable body abuts against the limiting wall; the positioning part propped against the limiting wall enters the first gear groove under the action of the elastic piece until propping against the gear wall; the positioning part which is propped against the gear wall enters the guide groove along the gear wall when the movable body moves towards the outside of the outer shell; the positioning part entering the guide groove slides into the avoidance groove along the guide groove and enters the third gear groove when the movable body moves towards the inside of the outer shell.

According to some embodiments of the utility model, the elastic member is a tension spring, one end of the tension spring is connected with the outer shell, and the other end of the tension spring is connected with the positioning member.

According to some embodiments of the utility model, the middle part of the positioning piece is rotatably connected with the outer shell, one end of the positioning piece is connected with the other end of the tension spring, and the positioning part is arranged at the other end of the positioning piece.

A seat according to an embodiment of the second aspect of the utility model comprises a gear adjustment mechanism as described above.

The seat provided by the embodiment of the utility model has at least the following beneficial effects:

the seat provided by the utility model is provided with the gear adjusting mechanism, when the gear adjusting mechanism is used, when the positioning component is clamped in the second gear groove and the movable body needs to be lifted to the highest gear, the movable body can be pulled out, in the process of pulling the movable body, the positioning component can enter the avoiding groove from the second gear groove, the limiting wall moves towards the positioning component until the limiting wall abuts against the positioning component along with the fact that the movable body is continuously pulled out, and after the positioning component is blocked by the limiting wall, the positioning component can automatically slide into the first gear groove until the positioning component abuts against the gear wall, and at the moment, the movable body is lifted to the highest gear.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of a gear position adjustment mechanism according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an exploded structure of the graph of FIG. 1;

FIG. 3 is a schematic view of a movable body according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the outer housing and positioning assembly of an embodiment of the present utility model;

fig. 5 is a schematic structural view of a movable body and a positioning assembly according to an embodiment of the present utility model.

Reference numerals:

100. an outer housing; 110. a first housing; 111. a connection part; 120. a second housing;

200. a movable body; 210. a gear groove; 211. a first gear groove; 211a, a gear wall; 211b, guide walls; 212. a second gear groove; 213. a third gear groove; 220. an avoidance groove; 230. a guide groove; 231. an inclined section; 240. a first transition groove; 241. a limiting wall; 250. a second transition groove;

300. a positioning assembly; 310. a positioning piece; 311. a positioning part; 320. an elastic member; 330. and a fixing piece.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, a gear position adjusting mechanism according to some embodiments of the present utility model includes an outer housing 100 and a movable body 200.

The outer housing 100 is a hollow structure provided with an inner cavity.

Referring to fig. 1 and 2, specifically, the outer housing 100 includes a first housing 110 and a second housing 120 connected to the first housing 110, where the first housing 110 and the second housing 120 enclose an inner cavity.

Further, the outer housing 100 is provided with an opening communicating with its inner cavity.

Referring to fig. 1 and 2, the movable body 200 is movably disposed through the outer housing 100, and the movable body 200 has a first end and a second end opposite to each other.

It can be understood that the movable body 200 is disposed through the inner cavity of the outer casing 100 and can move up and down relative to the outer casing 100; the first end of the movable body 200 is the lower end thereof, and the second end of the movable body 200 is the upper end thereof.

As shown in fig. 3, further, the side wall of the movable body 200 is provided with a plurality of gear slots 210, a plurality of avoidance slots 220 and guide slots 230, wherein the plurality of gear slots 210 are arranged at intervals along the direction from the first end of the movable body 200 to the second end of the movable body 200, the avoidance slots 220 are located at one side of the plurality of gear slots 210, the guide slots 230 are located at the other side of the plurality of gear slots 210, and the passage port of each gear slot 210 faces the avoidance slots 220.

Specifically, in this embodiment, the plurality of gear slots 210 are arranged at intervals along the vertical direction, the avoidance slots 220 are arranged on the left sides of all the gear slots 210, the guide slots 230 are arranged on the right sides of all the gear slots 210, and the passage port of each gear slot 210 faces the avoidance slot 220 and is communicated with the avoidance slot 220.

The gear slot 210 closest to the first end of the movable body 200 is a first gear slot 211, that is, the lowest gear slot 210 is the first gear slot 211; the gear groove 210 adjacent to the first gear groove 211 is a second gear groove 212, that is, the second gear groove 212 is located above the first gear groove 211 and is disposed adjacent to the first gear groove 211; the gear groove 210 closest to the second end of the movable body 200 is the third gear groove 213, i.e., the uppermost gear groove 210 is the third gear groove 211.

Further, the first gear groove 211 has a gear wall 211a and a guide wall 211b, the gear wall 211a is provided opposite to the passage opening of the first gear groove 211, one end of the guide wall 211b is connected to the gear wall 211a, and the other end extends toward the passage opening of the first gear groove 211.

It is to be understood that the passage opening of the first gear slot 211 is disposed toward the avoidance slot 220 and is communicated with the avoidance slot 220, the gear wall 211a is located at one side of the passage opening of the first gear slot 211 away from the avoidance slot 220, the gear wall 211a is disposed opposite to the passage opening of the first gear slot 211, one end of the guiding wall 211b is connected with the gear wall 211a, and the other end extends toward the passage opening of the first gear slot 211.

Further, the movable body 200 further has a limiting wall 241, the limiting wall 241 is located on one side of the guiding wall 211b near the first end of the movable body 200, that is, the limiting wall 241 is located below the guiding wall 211b, and the limiting wall 241 is disposed at the end of the avoiding groove 220 near the first end of the movable body 200, that is, the limiting wall 241 is blocked at the lower end of the avoiding groove 220.

The positioning assembly 300 is disposed within the outer housing 100 and is coupled to the outer housing 100.

As shown in fig. 4, in particular, the positioning assembly 300 is disposed in the inner cavity of the outer housing 100, and the positioning assembly 300 is connected with the outer housing 100.

Referring to fig. 3 and fig. 4, the positioning assembly 300 clamped in the second gear slot 212 enters the avoiding slot 220 until being abutted by the limiting wall 241 when the movable body 200 moves towards the outside of the outer housing 100; the positioning component propped against the limiting wall 241 automatically enters the first gear groove 211 until propping against the gear wall 211 a; the positioning assembly 300 abutting against the gear wall 211a enters the guide groove 230 along the gear wall 211a when the movable body 200 slides toward the outside of the outer housing 100; the positioning assembly 300 entering the guide groove 230 slides into the escape groove 220 along the guide groove 230 and into the third gear groove 213 when the movable body 200 moves toward the inside of the outer housing 100.

It can be appreciated that, when the positioning assembly 300 is clamped to the second gear slot 212 and the movable body 200 is pulled outwards to move the movable body 200 upwards (the movable body 200 moves towards the second end thereof), the positioning assembly 300 can enter the avoidance slot 220, and as the movable body 200 continues to slide upwards, the limiting wall 241 moves towards the positioning assembly 300 until it abuts against the positioning assembly 300; after the positioning assembly 300 is blocked by the limiting wall 241, the positioning assembly 300 can automatically slide into the first gear slot 211 until the positioning assembly abuts against the blocking wall 211 a; when the positioning assembly 300 is abutted against the gear wall 211a, and the movable body 200 is pulled outward again to move the movable body 200 upward, the positioning assembly 300 can enter the guide groove 230 along the gear wall 211a, enter the avoiding groove 220 from the end of the guide groove 230 near the second end of the movable body 200 along the guide groove 230, and then enter the third gear groove 213.

It should be noted that, when the positioning component 300 is clamped in the third gear slot 213, the movable body 200 is defined to be in the lowest gear, and when the positioning component 300 is clamped in the first gear slot 211, the movable body 200 is defined to be in the highest gear.

When the gear adjusting mechanism is used, when the positioning component 300 is clamped in the second gear groove 212 and the movable body 200 needs to be lifted to the highest gear, the movable body 200 can be pulled out, the positioning component 300 can enter the avoiding groove 220 from the second gear groove 212 in the process of pulling the movable body 200, the limiting wall 241 moves towards the positioning component 300 until the positioning component 300 abuts against the movable body 200 along with the fact that the movable body 200 is pulled out continuously, and after the positioning component 300 is blocked by the limiting wall 241, the positioning component 300 can automatically slide into the first gear groove 211 until the positioning component abuts against the gear wall 211a, and at the moment, the movable body 200 is lifted to the highest gear.

In the gear adjusting mechanism of the present utility model, in the process of lifting the movable body 200 to the highest gear, the limiting wall 241 can block the positioning component 300, and when the positioning component 300 is blocked by the limiting wall 241, the positioning component 300 can slide into the first gear slot 211 until the positioning component abuts against the blocking wall 211a, so when the movable body 200 needs to be lifted to the highest gear, no matter how much force is used, the movable body 200 is positioned at the highest gear first, and therefore, the situation that the movable body 200 returns to the lowest gear due to excessive force when the movable body 200 is lifted to the highest gear can be avoided.

When the movable body 200 at the highest gear needs to be reset to the lowest gear, the movable body 200 is only required to be pulled out again, so that the positioning assembly 300 enters the guide groove 230 along the gear wall 211a, and then the positioning assembly 300 can enter the avoiding groove 220 along the guide groove 230 and then enter the third gear groove 213, so that the movable body 200 is at the lowest gear.

The movable body 200 may be connected to an armrest, a seatback, a headrest, or the like.

As shown in fig. 3, in some embodiments, the guide wall 211b is disposed at an angle with respect to the gear wall 211a, the guide wall 211b is gradually disposed toward the second end of the movable body 200 along a predetermined direction, the gear wall 211a is gradually disposed toward the first end of the movable body 200 along the predetermined direction, and a side of the guide wall 211b near the second end of the movable body 200 is connected to a side of the gear wall 211a near the second end of the movable body 200; the preset direction is an arrangement direction from the avoidance groove 220 to the guide groove 230.

Specifically, the guide wall 211b is gradually inclined upward from left to right, the stopper wall 211a is gradually inclined downward from left to right, and the top edge of the guide wall 211b is connected to the top edge of the stopper wall 211 a.

It will be appreciated that the guide wall 211b and the abutment wall 211a are disposed at an angle such that the positioning assembly 300 can be restrained at the angle between the guide wall 211b and the abutment wall 211 a.

Further, the limiting wall 241 is gradually inclined toward the second end of the movable body 200 along a preset direction; i.e. the limiting wall 241 is gradually inclined upwards from left to right.

It is understood that the limiting wall 241 also plays a role in guiding the positioning assembly 300 to a certain extent, for guiding the positioning assembly 300 into the first gear slot 211; specifically, after the positioning assembly 300 abuts against the limiting wall 241, the positioning assembly 300 can enter the first gear slot 211 in advance under the guiding action of the limiting wall 241, and then move along the guiding wall 211b until abutting against the blocking wall 211 a.

It should be noted that, the movable body 200 is further provided with a first transition groove 240, one end of the first transition groove 240 is communicated with one end of the avoidance groove 220 near the first end of the movable body 200, and the other end of the first transition groove 240 is communicated with one end of the guide groove 230 near the first end of the movable body 200, that is, the bottom end of the avoidance groove 220 is communicated with the bottom end of the guide groove 230 by the first transition groove 240. The guide wall 211b and the limiting wall 241 are two sidewalls of the first transition groove 240 disposed opposite to each other.

It will be appreciated that the first gear slot 211 is part of the first transition slot 240, and that entry of the positioning assembly 300 into the first gear slot 211 indicates that the positioning assembly 300 is entering the first transition slot 240; when the positioning assembly 300 is located in the first gear slot 211 and abuts against the gear wall 211a, the movable body 200 is pulled outwards, so that the positioning assembly 300 enters the guide slot 230 along the second half section of the first transition slot 240.

In some embodiments, the movable body 200 is further provided with a second transition groove 250, one end of the second transition groove 250 is communicated with one end of the avoidance groove 220 near the second end of the movable body 200, and the other end of the second transition groove 250 is communicated with one end of the guide groove 230 near the second end of the movable body 200; that is, the second transition groove 250 serves to communicate the upper end of the escape groove 220 with the upper end of the guide groove 230.

It will be appreciated that when the positioning assembly 300 enters the guide slot 230 from the first transition slot 240, it may enter the avoidance slot 220 through the second transition slot 250, and then enter the third gear slot 213, so as to return the movable body 200 to the lowest gear.

Specifically, when the movable body 200 located at the highest gear needs to be reset to the lowest gear, the movable body 200 is pulled outwards, so that the positioning assembly 300 enters the guide groove 230 along the first transition groove 240, then the positioning assembly 300 can enter the second transition groove 250 from the upper end of the guide groove 230 along the guide groove 230, then enter the avoidance groove 220, and then enter the third gear groove 213, so that the movable body 200 returns to the lowest gear.

It should be noted that, in the gear adjusting mechanism of the present utility model, once the positioning assembly 300 enters the guide slot 230 from the first transition slot 240, the movable body 200 automatically descends under the gravity of the movable body 200 itself and the gravity of the member loaded on the movable body 200, so that the positioning assembly 300 automatically moves along the guide slot 230.

As shown in fig. 4, in some embodiments, the positioning assembly 300 includes a positioning member 310 movably coupled to the outer housing 100, and an elastic member 320 coupled to the outer housing 100, the elastic member 320 also coupled to the positioning member 310.

The elastic member 320 is configured to enable the positioning member 310 located in the avoidance groove 220 to have a tendency to swing towards the guide groove 230, so that the positioning member 310 located in the avoidance groove 220 can be pulled into the gear groove 210 by the elastic member 320 under the action of the elastic member 320.

Referring to fig. 3 and 4, when the movable body 200 moves towards the outside of the outer housing 100, the positioning member 310 engaged with the second gear slot 212 enters the avoiding slot 220 until abutting against the limiting wall 241, and slides into the first gear slot 211 until abutting against the blocking wall 211a under the action of the elastic member 320; the positioning piece 310 abutting against the gear wall 211a enters the guide groove 230 along the gear wall 211a when the movable body 200 moves toward the outside of the outer case 100.

Specifically, the positioning member 310 is rotatably connected to the outer housing 100, and a positioning portion 311 is provided on the positioning member 310.

The elastic member 320 is configured to enable the positioning portion 311 located in the avoidance groove 220 to have a tendency to swing toward the guide groove 230, so that the positioning portion 311 located in the avoidance groove 220 can be pulled into the gear groove 210 by the elastic member 320 under the action of the elastic member 320.

The positioning part 311 clamped in the second gear groove 212 enters the avoidance groove 220 when the movable body 200 moves towards the outside of the outer shell 100 until the positioning part abuts against the limiting wall 241, and slides into the first gear groove 211 until the positioning part abuts against the limiting wall 211a under the action of the elastic piece 320; the positioning portion 311 abutting against the gear wall 211a enters the guide groove 230 along the gear wall 211a when the movable body 200 moves toward the outside of the outer case 100.

More specifically, the elastic member 320 is a tension spring, one end of which is connected to the outer case 100 and the other end of which is connected to the positioning member 310.

Wherein, the middle part of the positioning member 310 is rotatably connected with the outer housing 100, one end of the positioning member 310 is connected with the other end of the tension spring, and the positioning portion 311 is disposed at the other end of the positioning member 310.

It can be understood that the positioning member 310 is connected to the outer housing 100 through the fixing member 330, and the positioning member 310 can rotate around the fixing member 330, one end of the elastic member 320 is connected to the connecting portion 111 of the outer housing 100, the other end is connected to one end of the positioning member 310, and the positioning portion 311 is disposed at the other end of the positioning member 310.

Wherein the fixing member 330 may be a pin or a screw.

When the gear adjusting mechanism is used, when the positioning part 311 is clamped in the second gear groove 212 and the movable body 200 needs to be lifted to the highest gear, the movable body 200 can be pulled out, the positioning part 311 can enter the avoiding groove 220 from the second gear groove 212 under the action of the elastic piece 320 in the process of pulling the movable body 200, the limiting wall 241 moves towards the positioning part 311 until the limiting wall is abutted against the positioning part 311 along with the outward pulling of the movable body 200, and after the positioning part 311 is blocked by the limiting wall 241, the positioning part 311 can slide into the first gear groove 211 until the limiting wall 211a is abutted against the positioning part 311 under the action of the elastic piece 320, at the moment, the movable body 200 is lifted to the highest gear.

In the gear adjusting mechanism of the present utility model, in the process of lifting the movable body 200 to the highest gear, the positioning wall 241 can block the positioning portion 311, and when the positioning portion 311 is blocked by the positioning wall 241, the positioning portion 311 can slide into the first gear slot 211 under the action of the elastic member 320 until the positioning portion abuts against the gear wall 211a, so when the movable body 200 needs to be lifted to the highest gear, no matter how much force is used, the positioning portion 311 is positioned in the first gear slot 211 first, and the movable body 200 is ensured to be positioned at the highest gear first, thereby avoiding the situation that the movable body 200 returns to the lowest gear due to excessive force when the movable body 200 is lifted to the highest gear.

When the movable body 200 at the highest gear needs to be reset to the lowest gear, the movable body 200 is only required to be pulled out, so that the positioning portion 311 enters the guide groove 230 along the gear wall 211a under the action of the elastic member 320, then the movable body 200 descends under the action of the gravity of the movable body 200, the positioning portion 311 enters the second transition groove 250 from the upper end of the guide groove 230 along the guide groove 230, then enters the avoidance groove 220, and then enters the third gear groove 213, so that the movable body 200 is at the lowest gear.

Referring to fig. 4 and 5, it should be noted that a section of the guide groove 230 near the second transition groove 250 has an inclined section 231, and the inclined section 231 gradually inclines from bottom to top to right; after the positioning portion 311 enters the inclined section, the positioning member 310 rotates, so that the acting force of the elastic member 320 on the positioning member 310 changes, and when the positioning portion 311 is located at the junction of the inclined section 231 and the second transition groove 250, the elastic member 320 can drive the positioning portion 311 to swing leftwards into the second transition groove 250, and finally pull the positioning portion 311 into the third gear groove 213.

The utility model also relates to a seat comprising a gear adjustment mechanism as described above.

The seat of the utility model is provided with the gear adjusting mechanism, when the gear adjusting mechanism is used, when the positioning component 300 is clamped in the second gear groove 212 and the movable body 200 needs to be lifted to the highest gear, the movable body 200 can be pulled out, during the process of pulling the movable body 200, the positioning component 300 can enter the avoiding groove 220 from the second gear groove 212, the limiting wall 241 moves towards the positioning component 300 until the positioning component 300 abuts against as the movable body 200 is continuously pulled out, and when the positioning component 300 is blocked by the limiting wall 241, the positioning component 300 can automatically slide into the first gear groove 211 until the positioning component 300 abuts against the gear wall 211a, and at the moment, the movable body 200 is lifted to the highest gear.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The gear adjusting mechanism is characterized by comprising an outer shell, a movable body and a positioning assembly;

the movable body is movably arranged on the outer shell in a penetrating manner, the movable body is provided with a first end and a second end which are opposite, the side wall of the movable body is provided with a plurality of gear grooves arranged at intervals, an avoidance groove positioned at one side of the gear grooves and a guide groove positioned at the other side of the gear grooves, the gear grooves are arranged at intervals along the direction from the first end to the second end, and the passage port of each gear groove faces to the avoidance groove and is communicated with the avoidance groove;

2. The gear position adjusting mechanism according to claim 1, wherein the guide wall is disposed at an angle to the gear position wall, the guide wall is disposed gradually inclined toward the second end in a preset direction, the gear position wall is disposed gradually inclined toward the first end in the preset direction, and a side of the guide wall near the second end is connected to a side of the gear position wall near the second end;

3. The shift position adjusting mechanism according to claim 2, wherein the limiting wall is gradually inclined toward the second end in the preset direction.

4. The gear position adjusting mechanism according to claim 1, wherein the movable body is further provided with a first transition groove, one end of the first transition groove is communicated with one end of the avoidance groove near the first end, and the other end of the first transition groove is communicated with one end of the guide groove near the first end;

5. The gear position adjusting mechanism according to claim 1, wherein the movable body is further provided with a second transition groove, one end of the second transition groove is communicated with one end of the avoidance groove near the second end, and the other end of the second transition groove is communicated with one end of the guide groove near the second end.

6. The gear position adjustment mechanism of claim 1, wherein the positioning assembly comprises a positioning member movably coupled to the outer housing and an elastic member coupled to the outer housing, the elastic member further coupled to the positioning member, the elastic member configured to cause the positioning member located in the relief groove to have a tendency to swing toward the guide groove;

7. The gear position adjusting mechanism according to claim 6, wherein the positioning member is rotatably connected with the outer housing, a positioning portion is provided on the positioning member, and the elastic member is configured to cause the positioning portion located in the escape groove to have a tendency to swing toward the guide groove;

8. The gear position adjusting mechanism according to claim 7, wherein the elastic member is a tension spring, one end of the tension spring is connected to the outer housing, and the other end is connected to the positioning member.

9. The gear position adjusting mechanism according to claim 8, wherein a middle portion of the positioning member is rotatably connected to the outer case, one end of the positioning member is connected to the other end of the tension spring, and the positioning portion is provided at the other end of the positioning member.

10. A seat comprising a gear adjustment mechanism according to any one of claims 1 to 9.