CN221315897U - A locking mechanism, an armrest assembly and a seat assembly - Google Patents

Abstract

The utility model discloses a locking mechanism, an armrest assembly and a seat assembly, relates to the technical field of automobile seats, and is used for solving the problem that an armrest of a seat is easy to automatically rotate. The locking mechanism comprises a buckle and a limiting assembly. One end of the buckle is used for being connected to the seat armrest in a relatively rotatable manner. The limiting assembly comprises a traction piece and a plurality of limiting pieces. The traction piece is connected with the other end of the buckle. The plurality of limiting pieces are connected with the traction piece and are used for being connected with the seat armrests in a sliding mode. The plurality of limiting parts are used for being clamped with the seat under the drive of the buckling hand and the traction part, so that the seat armrest is in a locking state. The plurality of limiting pieces are also used for being separated from the seat under the drive of the buckle and the traction piece so as to enable the seat armrest to be in a relative rotation state. The locking mechanism provided by the utility model is used for locking the armrest of the seat on the seat.

Description

A locking mechanism, an armrest assembly and a seat assembly

Technical Field

The utility model relates to the technical field of automobile seats, in particular to a locking mechanism, an armrest assembly and a seat assembly.

Background technique

At present, most vehicles have rotatable armrests in the center of the rear seats. When passengers need to rest their elbows or place items such as cups, they can rotate the armrests to lay them flat, and then place items on them or support their elbows on them. When more passengers need to sit on the rear seats, users can rotate the armrests to store them in the storage cavity on the rear seats, thereby providing a larger seating space for the rear seats.

However, after the seat armrest is stored in the storage cavity on the rear seat, the seat armrest is prone to automatically rotate due to inertia while the vehicle is moving, and is easily pulled out of the storage cavity, posing a safety hazard.

Utility Model Content

The utility model provides a locking mechanism, an armrest assembly and a seat assembly, which are used to solve the problem that the seat armrest is easy to rotate automatically.

In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

On the one hand, the present application provides a locking mechanism for being arranged on a seat armrest so that the seat armrest and the seat are in a locked or relatively rotated state. The locking mechanism includes a buckle handle and a limit assembly. One end of the buckle handle is used to be relatively rotatably connected to the seat armrest. The limit assembly includes a traction member and a plurality of limit members. The traction member is connected to the other end of the buckle handle. A plurality of limit members are connected to the traction member and are used to be slidably connected to the seat armrest. A plurality of limit members are used to engage with the seat under the drive of the buckle handle and the traction member so that the seat armrest is in a locked state. A plurality of limit members are also used to separate from the seat under the drive of the buckle handle and the traction member so that the seat armrest is in a relatively rotated state.

In the locking mechanism provided in the embodiment of the present application, since the buckle is connected to the traction member, the buckle can drive the traction member to move during the rotation of the buckle relative to the seat armrest. Since the traction member is connected to multiple limiting members, the movement of the traction member can drive the movement of multiple limiting members.

Since a plurality of limit members are slidably connected to the seat armrests and can be engaged with the seats, when the limit members are engaged with the seats, the limit members can play a limiting role, thereby preventing the seat armrests from rotating relative to the seat, thereby effectively avoiding automatic rotation of the seat armrests relative to the seat and reducing the safety hazards of the seat armrests.

When the passenger needs to rotate the seat armrest to the open state for use, the buckle and the traction member can drive multiple limit members to separate from the seat. After the limit members are separated from the seat, the limit members can no longer play a limiting role, and the seat armrest can be rotated relative to the seat, so that the passenger can normally rotate the seat armrest to open it for use.

In some embodiments, the locking mechanism further comprises a connecting assembly, one end of which is connected to the other end of the buckle, and the other end of which is connected to the traction member. The connecting assembly is used to drive the traction member and the plurality of limit members to move when the buckle rotates relative to the seat armrest.

In some embodiments, the traction member includes a first traction rope, an adapter, and a plurality of second traction ropes. One end of the first traction rope is connected to the connecting assembly. The adapter is connected to the other end of the first traction rope. One end of the plurality of second traction ropes is connected to the adapter. The other end of a second traction rope is connected to a stopper.

In some embodiments, when the buckle rotates relative to the seat armrest, the connection between the connecting assembly and the traction member moves along a first direction, wherein the first direction is perpendicular to the rotation axis of the buckle.

In some embodiments, the locking mechanism further comprises a U-shaped structure, wherein a U-shaped channel is formed inside the U-shaped structure for connecting with the seat armrest. The traction member is arranged in the U-shaped channel, and both ends are located outside the U-shaped structure. One end of the traction member is connected to the connecting assembly, and the other end is connected to the plurality of limit members.

When the connecting assembly drives the traction member to move, the movement directions of the two ends of the traction member are opposite.

In some embodiments, the connecting assembly includes a first connecting member and a second connecting member. The first connecting member is fixedly connected to the buckle. One end of the second connecting member is connected to the first connecting member for rotation around a first axis, and the other end is connected to the limit assembly for rotation around a second axis. The first axis and the second axis are both parallel to the rotation axis of the buckle.

In some embodiments, the buckle includes a main body and a connecting shaft. One end of the main body is used to be relatively rotatably connected to the armrest of the chair. The connecting shaft is connected to the other end of the main body.

The first connecting member is provided with a connecting hole. A protrusion is formed on one of the connecting shaft and the hole wall of the connecting hole, and a recess is formed on the other. The connecting shaft is inserted into the connecting hole, and the protrusion is clamped in the recess.

In some embodiments, the first connecting member includes a connecting body and a clamping shaft. The connecting body is connected to the buckle. The clamping shaft is connected to the connecting body. The axis of the clamping shaft coincides with the first axis. A clamping groove is formed at one end of the second connecting member. Along the extension direction of the first axis, the clamping groove penetrates the surfaces of the second connecting member on opposite sides. The clamping shaft is located in the clamping groove and is clamped with the clamping groove.

When the buckle handle rotates relative to the seat armrest, the second connecting member is rotationally connected to the clamping shaft.

On the other hand, the present application also provides an armrest assembly, comprising a seat armrest and any one of the above locking mechanisms. One end of the buckle can be relatively rotatably connected to the seat armrest. The limit assembly is connected to the seat armrest.

Since the armrest assembly provided in the present application includes any one of the above-mentioned locking mechanisms, the beneficial effects that can be produced by the above-mentioned armrest assembly are the same as the beneficial effects of the above-mentioned locking mechanism, which will not be repeated here.

In another aspect, the present application also provides a seat assembly, comprising a seat and the above-mentioned armrest assembly. The armrest assembly is rotatably connected to the seat. The armrest assembly is used to engage with the seat so that the armrest assembly is in a locked state. The armrest assembly is also used to separate from the seat so that the armrest assembly is in a relatively rotating state.

Since the seat assembly provided in the present application includes the above-mentioned armrest assembly, the beneficial effects that can be produced by the above-mentioned seat assembly are the same as the beneficial effects of the above-mentioned armrest assembly, which will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a seat assembly provided in an embodiment of the present application;

FIG2 is a schematic diagram of a locking mechanism and a seat provided in an embodiment of the present application;

FIG3 is a second schematic diagram of a locking mechanism and a seat provided in an embodiment of the present application;

FIG4 is a schematic diagram of a locking mechanism provided in an embodiment of the present application;

FIG5 is one of the partial schematic diagrams of the locking mechanism provided in the embodiment of the present application;

FIG6 is a second partial schematic diagram of the locking mechanism provided in an embodiment of the present application;

FIG7 is a schematic diagram of an armrest assembly provided in another embodiment of the present application;

FIG8 is a schematic diagram of a locking mechanism provided in another embodiment of the present application;

FIG9 is a schematic diagram of a locking mechanism and a seat provided in another embodiment of the present application;

FIG10 is a second schematic diagram of a locking mechanism and a seat provided in another embodiment of the present application;

FIG11 is a third partial schematic diagram of the locking mechanism provided in an embodiment of the present application;

FIG. 12 is a fourth partial schematic diagram of the locking mechanism provided in an embodiment of the present application.

Reference numerals:

100-seat assembly; 1-seat; 2-armrest assembly; 11-clamping hole; 21-seat armrest; 211-housing; 2111-operating hole; 22-locking mechanism; 221-clasp; 222-connection assembly; 223-limiting assembly; 224-installation shell; 225-U-shaped structure; 2241-installation cavity; 2242-first opening; 2243-second opening; 2221-first connecting piece; 2222-second connecting piece; 223 1-traction member; 2232-limiting member; 2233-mounting bracket; 2234-limiting pin; 2235-first traction rope; 2236-adapter; 2237-second traction rope; 2211-main body; 2212-connecting shaft; 2223-connecting hole; 2224-first connecting part; 2225-second connecting part; 2226-third connecting part; 22221-clamping groove; 22261-connecting body; 22262-clamping shaft.

Detailed ways

The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

In order to improve the riding comfort and functionality of passengers, a stowable seat armrest is usually set in the middle of the rear seat backrest of the car. The seat armrest on the rear seat can not only be used to store things, but also to support the passengers' arms. At the same time, it can be completely stowed in the storage cavity on the seat backrest, without taking up extra space in the car.

In the related art, when the seat armrest is stored in the storage cavity on the seat back, the seat armrest is maintained in the storage cavity by the friction force generated by the mutual compression between the seat armrest and the seat back.

However, since the seat armrest in the related art is only retained in the accommodating cavity by the friction between it and the seat back, and there is no limiting structure to prevent the seat armrest from escaping from the storage cavity, when the vehicle is moving, the seat armrest can easily rotate automatically due to inertia, and thus easily escape from the storage cavity of the seat back, posing a safety hazard.

Based on this, an embodiment of the present application provides a seat assembly, as shown in FIG1 , which is a schematic diagram of a seat assembly 100 provided in an embodiment of the present application, and the seat assembly 100 includes a seat 1 and an armrest assembly 2. The armrest assembly 2 is rotatably connected to the seat 1. The armrest assembly 2 can be switched between an open state and a closed state by rotating relative to the seat 1.

When the armrest assembly 2 is rotated to the open state, the passenger can place items such as a water cup on the armrest assembly 2 , or support the arm on the armrest assembly 2 .

When the armrest assembly 2 is rotated to the closed state, the armrest assembly 2 will not occupy the seating space on the seat 1 , thereby facilitating the passenger to move on the seat 1 .

It is understandable that the seat 1 can be an independent seat 1 or a combined seat 1, and the type of the seat 1 is not limited here.

The armrest assembly 2 is used for being engaged with the seat 1 so that the armrest assembly 2 is in a locked state. The armrest assembly 2 is also used for being separated from the seat 1 so that the armrest assembly 2 is in a relatively rotating state.

It should be noted that when the armrest assembly 2 is locked by being engaged with the seat 1, the armrest assembly 2 cannot rotate relative to the seat 1. When the armrest assembly 2 is separated from the seat 1 and is in a relatively rotating state, the armrest assembly 2 can rotate relative to the seat 1.

Therefore, since the armrest assembly 2 provided in the embodiment of the present application can be engaged with or separated from the seat 1, when the passenger does not need to use the armrest assembly 2, the armrest assembly 2 can be rotated to a closed state and the armrest assembly 2 can be engaged with the seat 1. In this way, the armrest assembly 2 cannot rotate relative to the seat 1, thereby effectively reducing the potential safety hazard caused by the armrest assembly 2 automatically rotating relative to the seat 1.

When the passenger needs to use the armrest assembly 2, the armrest assembly 2 can be separated from the seat 1. In this way, the armrest assembly 2 can be rotated relative to the seat 1, so that it can be rotated to an open state for use by the passenger.

Continuing to refer to FIG. 1 , in order to achieve the connection or separation between the armrest assembly 2 and the seat 1 , the armrest assembly 2 provided in the embodiment of the present application may include a seat armrest 21 and a locking mechanism (not shown in FIG. 1 ).

The seat armrest 21 is rotatably connected to the seat 1 . The locking mechanism is arranged on the seat armrest 21 .

As shown in FIG. 2 , FIG. 2 is one of schematic diagrams of the locking mechanism 22 and the seat 1 provided in the embodiment of the present application. The locking mechanism 22 can be used to engage with the seat 1 or to be separated from the seat 1. The state of the locking mechanism 22 engaging with the seat 1 can be seen in FIG. 3 , which is a second schematic diagram of the locking mechanism 22 and the seat 1 provided in the embodiment of the present application. The state of the locking mechanism 22 separating from the seat 1 can be seen in FIG. 2 .

Since the locking mechanism 22 is disposed on the seat armrest 21 , the armrest assembly 2 can be connected to or separated from the seat 1 under the action of the locking mechanism 22 .

When the locking mechanism 22 is engaged with the seat 1 , the locking mechanism 22 can limit the seat armrest 21 , thereby preventing the seat armrest 21 from rotating relative to the seat 1 .

When the locking mechanism 22 is separated from the seat 1 , the locking mechanism 22 will not limit the seat armrest 21 , and the seat armrest 21 can be rotated relative to the seat 1 , thereby being rotated to an open state for use by passengers.

The locking mechanism 22 provided in the embodiment of the present application is specifically introduced below. As shown in FIG. 4 , FIG. 4 is a schematic diagram of the locking mechanism 22 provided in the embodiment of the present application. The locking mechanism 22 provided in the embodiment of the present application may include a buckle 221 and a limit assembly 223 .

One end of the buckle 221 can be relatively rotatably connected to the seat armrest 21 (FIG. 1). It should be noted that one end of the buckle 221 can be directly rotatably connected to the seat armrest 21, or can be indirectly rotatably connected to the seat armrest 21 through other structures, as long as one end of the buckle 221 can be relatively rotatably connected to the seat armrest 21.

Exemplarily, referring to FIG. 4 , the locking mechanism 22 may further include a mounting shell 224 , the mounting shell 224 is connected to the seat armrest 21 ( FIG. 1 ), and one end of the buckle 221 is rotatably connected to the mounting shell 224 .

At this time, one end of the buckle 221 can be indirectly rotatably connected to the seat armrest 21 through the mounting shell 224 , so that it can rotate relative to the seat armrest 21 .

In some embodiments, as shown in FIG. 5 , which is one of the partial schematic diagrams of the locking mechanism 22 provided in the embodiment of the present application, the limiting assembly 223 may include a traction member 2231 and a plurality of limiting members 2232. The traction member 2231 is connected to the other end of the buckle 221 ( FIG. 4 ). The plurality of limiting members 2232 are connected to the traction member 2231, and the plurality of limiting members 2232 are used to be slidably connected to the seat armrest 21 ( FIG. 1 ).

The plurality of limiting members 2232 can be used to slide relative to the seat armrest 21 under the drive of the buckle 221 and the traction member 2231 , so as to be engaged with the seat 1 ( FIG. 1 ) to put the seat armrest 21 in a locked state.

Since multiple limiting members 2232 are slidably connected to the seat armrest 21 and can be engaged with the seat 1, when the limiting members 2232 are engaged with the seat 1, the limiting members 2232 can play a limiting role, thereby preventing the seat armrest 21 from rotating relative to the seat 1, thereby effectively avoiding the seat armrest 21 from automatically rotating relative to the seat 1 and reducing the safety hazard of the seat armrest 21.

The plurality of limit members 2232 can also be used to slide relative to the seat armrest 21 driven by the buckle 221 and the traction member 2231 , so as to be separated from the seat 1 ( FIG. 1 ) so that the seat armrest 21 is in a relatively rotated state.

In this way, when the passenger needs to rotate the seat armrest 21 to the open state for use, since the buckle 221 and the traction member 2231 can drive the multiple limiting members 2232 to separate from the seat 1, when the limiting members 2232 are separated from the seat 1, the limiting members 2232 can no longer play a limiting role, and the seat armrest 21 can be rotated relative to the seat 1, so that the passenger can normally rotate the seat armrest 21 and open it for use.

In addition, by setting a plurality of limit members 2232 in the limit assembly 223, and the plurality of limit members 2232 can be clamped with the seat 1 under the drive of the traction member 2231, the plurality of limit members 2232 can have a better limiting effect on the seat armrest 21 after being clamped with the seat 1, thereby further avoiding the seat armrest 21 from automatically rotating relative to the seat 1, and further improving the safety of the seat armrest 21.

The number of the limiting members 2232 can be specifically set according to actual needs. For example, as shown in FIG. 5 , the number of the limiting members 2232 can be two.

In some embodiments, as shown in FIG. 4 , the locking mechanism 22 may further include a connecting component 222 , one end of the connecting component 222 being connected to the other end of the buckle 221 , and the other end of the connecting component 222 being connected to the traction member 2231 .

The connecting assembly 222 can be used to drive the traction member 2231 and the plurality of limiting members 2232 to move when the buckle handle 221 rotates relative to the seat armrest 21 .

In this way, by providing the connecting assembly 222, the traction member 2231 does not need to be directly connected to the buckle 221, so that the setting position of the traction member 2231 is more flexible.

Of course, in other embodiments, the traction member 2231 may also be directly connected to the buckle 221. In this way, no other structure is required in the locking mechanism 22 to realize the connection between the traction member 2231 and the buckle 221, so that the structure of the locking mechanism 22 is relatively simple and the production cost is relatively low.

The arrangement of the locking mechanism 22 on the seat armrest 21 can be specifically arranged according to actual conditions. For example, as shown in FIG1 , the seat armrest 21 may include a housing 211, a receiving cavity (not shown in the figure) is formed inside the housing 211, and an operating hole 2111 and a sliding hole (not shown in the figure) communicating with the receiving cavity are provided. At this time, as shown in FIG4 , the mounting shell 224, the buckle 221 and the connecting assembly 222 of the locking mechanism 22 are arranged in the receiving cavity.

As shown in FIG6 , FIG6 is a second partial schematic diagram of the locking mechanism 22 provided in an embodiment of the present application, wherein a mounting cavity 2241 is formed inside the mounting shell 224, and a first opening 2242 and a second opening 2243 are provided which are communicated with the mounting cavity 2241. The mounting shell 224 is connected to the outer shell 211 ( FIG1 ), and the first opening 2242 on the mounting shell 224 is arranged opposite to the operating hole 2111 ( FIG1 ).

One end of the buckle 221 is located in the installation cavity 2241 and at the first opening 2242, and is rotatably connected to the installation shell 224. The other end of the buckle 221 is inserted into the second opening 2243 and is located outside the installation shell 224. The connecting component 222 is located outside the installation shell 224 and is connected to the other end of the buckle 221.

In this way, the passenger can put his hand into the installation cavity 2241 through the operation hole 2111 and the first opening 2242, and then rotate the buckle handle 221. The other end of the buckle handle 221 can extend to the outside of the installation shell 224 through the second opening 2243, thereby connecting with the connection component 222 located outside the installation shell 224.

As shown in FIG. 5 , a portion of the traction member 2231 and the limiting member 2232 are located in the accommodating cavity and connected to the connecting assembly 222 , and another portion of the limiting member 2232 can extend to the outside of the shell 211 through the sliding hole, so that it can be used to engage or separate with the seat 1 .

In order to achieve the engagement or separation between the limiting member 2232 and the seat 1 , referring to FIG. 5 , the limiting member 2232 is slidably connected to the housing 211 ( FIG. 1 ).

As shown in FIG2 , a snap-in hole 11 is provided on the seat 1. The stopper 2232 can slide into the snap-in hole 11 so as to be snap-in with the seat 1. The stopper 2232 can also slide out of the snap-in hole 11 so as to be separated from the seat 1.

It can be understood that, as shown in FIG6 , since one end of the buckle 221 of the locking mechanism 22 provided in the embodiment of the present application is located at the first opening 2242 of the mounting shell 224 and is rotatably connected to the mounting shell 224, and the other end of the buckle 221 is passed through the second opening 2243 of the mounting shell 224 and extends to the outside of the mounting shell 224, when the user uses the locking mechanism 22, he only needs to move the other end of the buckle 221 in the housing 211 ( FIG1 ). In this case, the buckle 221 is an inner buckle.

Another embodiment of the present application also provides an armrest assembly 2 with an external buckle handle, as shown in FIG7 , which is a schematic diagram of an armrest assembly 2 provided by another embodiment of the present application, and the armrest assembly 2 may include a seat armrest 21 and a locking mechanism (not shown in FIG7 ). The seat armrest 21 includes a shell 211 , a receiving cavity (not shown in the figure) is formed inside the shell 211 , and an operating hole 2111 and a sliding hole (not shown in the figure) communicating with the receiving cavity are provided.

As shown in FIG8 , FIG8 is a schematic diagram of a locking mechanism 22 provided in another embodiment of the present application, and the locking mechanism 22 may include a mounting shell 224, a buckle 221, and a limit assembly 223. A mounting cavity 2241 is formed inside the mounting shell 224, and a first opening 2242 and a second opening 2243 (not shown in the figure) communicating with the mounting cavity 2241 are provided. The mounting shell 224 is connected to the housing 211 ( FIG7 ), and the first opening 2242 on the mounting shell 224 is arranged opposite to the operating hole 2111 ( FIG7 ).

The buckle 221 is provided through the second opening 2243, one end of which extends to the outside of the housing 211 through the first opening 2242 and the operation hole 2111, and the other end is located inside the housing 211 and outside the mounting shell 224. The two ends of the buckle 221 are rotatably connected to the mounting shell 224. The limit assembly 223 is provided through the sliding hole (not shown in the figure), a part of which is located in the accommodating cavity (not shown in the figure), connected to one end of the buckle 221 located inside the housing 211, and the other part is located outside the housing 211.

When the buckle 221 rotates, driven by the buckle 221, a portion of the limit assembly 223 located outside the housing 211 can be used to engage or disengage with the seat 1. The state of the limit assembly 223 engaging with the seat 1 can be seen in FIG9, which is one of the schematic diagrams of the locking mechanism 22 and the seat 1 provided in another embodiment of the present application. The state of the limit assembly 223 disengaging from the seat 1 can be seen in FIG10, which is the second schematic diagram of the locking mechanism 22 and the seat 1 provided in another embodiment of the present application.

It should be noted that in the above-mentioned armrest assembly 2, since the two ends of the buckle 221 are rotatably connected to the mounting shell 224, when the user uses the locking mechanism 22, the end of the buckle 221 located outside the shell 211 needs to move outside the shell 211. In this case, the buckle 221 is an external buckle type buckle.

It should be noted that when the stopper 2232 is engaged with the seat 1 by sliding into the engaging hole 11 on the seat 1, the number of the sliding holes and the number of the engaging holes 11 can be set corresponding to the number of the stopper 2232. For example, when the number of the stopper 2232 is two, the number of the sliding holes and the number of the engaging holes 11 are also set to two.

In order to realize the engagement or separation of the limiter 2232 and the seat 1, as shown in FIG5, the limiter 2232 may include a mounting bracket 2233, a limiter pin 2234 and a return spring (not shown in the figure). The mounting bracket 2233 is located in the accommodating cavity and is connected to the housing 211 (FIG. 1) of the seat armrest 21 (FIG. 1). The mounting bracket 2233 has a mounting hole (not shown in the figure), and the mounting hole is arranged opposite to the sliding hole on the housing 211. The limiter pin 2234 is inserted into the mounting hole and the sliding hole, is slidably connected to the mounting hole and the sliding hole, and is connected to the traction member 2231. The return spring is located in the mounting hole, one end of which is connected to the limiter pin 2234, and the other end is connected to the mounting bracket 2233.

In this way, when the stopper 2232 needs to be engaged with the seat 1, the user can rotate the seat armrest 21 so that the sliding hole on the seat armrest 21 is arranged opposite to the engaging hole 11 on the seat 1. At this time, under the action of the return spring, the stopper pin 2234 can slide into the engaging hole 11, so that the stopper 2232 can be engaged with the seat 1.

When the limit member 2232 needs to be separated from the seat 1, the user can rotate the buckle 221 so that the buckle 221 drives the limit pin 2234 to slide toward the direction close to the return spring through the connecting component 222 and the traction member 2231, so that the limit pin 2234 can be disengaged from the snap-in hole 11, and the limit member 2232 is separated from the seat 1.

In order to enable the traction member 2231 to pull multiple limiting members 2232 at the same time, referring to FIG5 , in some embodiments, the traction member 2231 may include a first traction rope 2235, an adapter 2236, and multiple second traction ropes 2237. One end of the first traction rope 2235 is connected to the connecting assembly 222 ( FIG4 ). The adapter 2236 is connected to the other end of the first traction rope 2235. One end of multiple second traction ropes 2237 is connected to the adapter 2236. The other end of one second traction rope 2237 is connected to one limiting member 2232.

Since the adapter 2236 is connected to the first end of the first traction rope 2235 and the first ends of the plurality of second traction ropes 2237 , when the connecting assembly 222 pulls the second end of the first traction rope 2235 , the first traction member 2231 can simultaneously drive the second ends of the plurality of second traction ropes 2237 to move.

Since the second ends of the plurality of second traction ropes 2237 are connected one by one to the plurality of limiting members 2232 , the second ends of the plurality of second traction ropes 2237 can simultaneously drive the plurality of limiting members 2232 to move when they move.

Therefore, by setting an adapter 2236 in the traction member 2231, the adapter 2236 only needs to be connected to the connecting component 222 through a first traction rope 2235, so that the connecting component 222 can simultaneously drive multiple second traction ropes 2237 to move, thereby driving multiple limit members 2232 to move, which greatly reduces the use of traction ropes in the traction member 2231.

It can be understood that the number of the second traction ropes 2237 is set to correspond to the number of the limiting members 2232. For example, when the number of the limiting members 2232 is two, the number of the second traction members 2231 is also set to two.

Of course, in other embodiments, the traction member 2231 may further include a plurality of first traction ropes 2235, the first ends of the plurality of first traction ropes 2235 are respectively connected to the plurality of position-limiting members 2232, and the second ends of the plurality of first traction ropes 2235 are all connected to the connection assembly 222. In this way, when the connection assembly 222 moves, the connection assembly 222 can also drive the plurality of position-limiting members 2232 to move through the plurality of first traction ropes 2235.

As shown in FIG. 4 , in some embodiments, when the buckle 221 rotates relative to the seat armrest 21 ( FIG. 1 ), the connection between the connecting assembly 222 and the traction member 2231 ( FIG. 5 ) moves along a first direction X. The first direction X is perpendicular to the rotation axis of the buckle 221 .

Since the connection between the connecting component 222 and the traction member 2231 moves on a certain plane during the rotation of the buckle 221 relative to the seat armrest 21, the connection between the connecting component 222 and the traction member 2231 occupies less space during the movement, thereby effectively reducing the space occupied by the locking mechanism 22 on the seat armrest 21.

Of course, in other embodiments, when the buckle 221 rotates relative to the seat armrest 21, the connection between the connecting assembly 222 and the traction member 2231 can also rotate around the rotation axis of the buckle 221. In this case, the structure of the connecting assembly 222 is relatively simple and the manufacturing cost is relatively low.

In order to enable the connection between the connection component 222 and the limiting component 223 to move along the first direction X, as shown in FIG6 , in some embodiments, the connection component 222 may include a first connection member 2221 and a second connection member 2222. The first connection member 2221 is fixedly connected to the buckle 221. One end of the second connection member 2222 is connected to the first connection member 2221 for rotation around a first axis, and the other end is connected to the limiting component 223 ( FIG4 ) for rotation around a second axis. The first axis and the second axis are both parallel to the rotation axis of the buckle 221.

Since the first end of the second connecting member 2222 is rotatably connected to the first connecting member 2221, when the buckle 221 drives the first connecting member 2221 to rotate around the rotation axis of the buckle 221, the first end of the second connecting member 2222 can rotate relative to the first connecting member 2221, so that the second end of the second connecting member 2222 can move along the first direction X.

Since the second end of the second connecting member 2222 is connected to the limiting assembly 223, and when the second end of the second connecting member 2222 moves along the first direction X, the relative position between the second connecting member 2222 and the limiting assembly 223 changes, by rotatably connecting the second end of the second connecting member 2222 with the limiting assembly 223, when the second end of the second connecting member 2222 moves along the first direction X, the second end of the second connecting member 2222 and the limiting assembly 223 can rotate relative to each other, so that the connection between the second connecting member 2222 and the limiting assembly 223 can be stably connected and move along the first direction X.

It should be noted that in order to enable the second end of the second connecting member 2222 to move along the first direction X, a guide structure needs to be provided in the locking mechanism 22 to limit the second end of the second connecting member 2222 so that the second end of the second connecting member 2222 can only move along the first direction X.

Exemplarily, the locking mechanism 22 may further include a guide member, which is located in the accommodating cavity and connected to the housing 211. A guide groove is provided on the guide member, and the guide groove extends along the first direction X. A guide portion is formed on the second end of the second connecting member 2222, and the guide portion is clamped in the guide groove and slidably connected to the guide groove.

Of course, in other embodiments, when the buckle 221 rotates, the connection between the connection assembly 222 and the limit assembly 223 can also be moved along the first direction X by other means. Exemplarily, the connection assembly 222 only includes a first connection member 2221, one end of the first connection member 2221 is connected to the buckle 221 for rotation around the third axis, and the other end is connected to the limit assembly 223 for rotation around the fourth axis. The third axis and the fourth axis are parallel to the rotation axis of the buckle 221.

In this case, during the rotation of the buckle 221 relative to the seat armrest 21, one end of the first connecting member 2221 and the buckle 221 rotate relative to each other, and after the first connecting member 2221 and the limiting assembly 223 rotate relative to each other, the connection between the first connecting member 2221 and the limiting assembly 223 can also move along the first direction X.

In some embodiments, as shown in FIG5 , the locking mechanism 22 may further include a U-shaped structure 225, the interior of the U-shaped structure 225 forms a U-shaped channel (not shown in the figure), and the U-shaped structure 225 is connected to the seat armrest 21 ( FIG1 ). The traction member 2231 is arranged in the U-shaped channel, and the two ends are located outside the U-shaped structure 225. One end of the traction member 2231 is connected to the connecting assembly 222, and the other end is connected to a plurality of stoppers 2232. When the connecting assembly 222 drives the traction member 2231 to move, the two ends of the traction member 2231 move in opposite directions.

In this way, by setting up the U-shaped structure 225, since the U-shaped structure 225 can make the movement directions of the two ends of the traction member 2231 opposite, and the connection point between the traction member 2231 and the connecting component 222 moves along the first direction X, the traction member 2231 occupies a smaller space in the first direction X, thereby making the size of the locking mechanism 22 in the first direction X smaller, greatly reducing the space occupied by the locking mechanism 22 on the seat armrest 21.

It should be noted that, as shown in FIG5 , when the traction member 2231 includes a first traction rope 2235, an adapter 2236, and a plurality of second traction ropes 2237, the first traction rope 2235 is inserted into the U-shaped channel, and both ends are located outside the U-shaped structure 225. The movement directions of the two ends of the first traction rope 2235 are opposite. The adapter 2236 and the plurality of second traction ropes 2237 are both located outside the U-shaped structure 225.

In order to achieve a fixed connection between the first connecting member 2221 and the buckle 221, as shown in FIG11, FIG11 is a partial schematic diagram of the locking mechanism 22 provided in an embodiment of the present application. In some embodiments, the buckle 221 may include a main body 2211 and a connecting shaft 2212. One end of the main body 2211 is used to be relatively rotatably connected to the seat armrest 21 (FIG. 1). The connecting shaft 2212 is connected to the other end of the main body 2211.

The first connecting member 2221 is provided with a connecting hole 2223. A protrusion (not shown in the figure) is formed on one of the connecting shaft 2212 and the hole wall of the connecting hole 2223, and a recess (not shown in the figure) is formed on the other. The connecting shaft 2212 is inserted into the connecting hole 2223, and the protrusion is engaged with the recess.

Since the connecting shaft 2212 is connected to the main body 2211, and the connecting shaft 2212 and the first connecting member 2221 can be clamped together through the protrusion and the recess, the main body 2211 can be connected to the first connecting member 2221 through the connecting shaft 2212, and the buckle 221 is connected to the first connecting member 2221.

The structures of the connecting shaft 2212 and the first connecting member 2221 are not specifically limited here. For example, a protrusion is formed on the connecting shaft 2212, and a recess is formed on the hole wall of the connecting hole 2223 of the first connecting member 2221.

In other embodiments, the buckle 221 and the first connecting member 2221 may be connected via a threaded connection.

Continuing to refer to FIG. 11 , in some embodiments, the first connecting member 2221 may include a first connecting portion 2224, a second connecting portion 2225, and a third connecting portion 2226. In which, along the extension direction of the rotation axis of the buckle 221, the first connecting portion 2224 is located at one side of the buckle 221 and is fixedly connected to the buckle 221. The second connecting portion 2225 is located at a side of the buckle 221 away from the first connecting portion 2224 and is fixedly connected to the buckle 221. The third connecting portion 2226 is located between the first connecting portion 2224 and the second connecting portion 2225, is connected to the first connecting portion 2224, and is connected to the second connecting portion 2225. The second connecting member 2222 is rotationally connected to the third connecting portion 2226 around the first axis.

Since the first connection part 2224 and the second connection part 2225 in the first connection member 2221 are connected to the surfaces on the opposite sides of the buckle 221, there are more fixed connection positions between the first connection member 2221 and the buckle 221, thereby making the connection between the first connection member 2221 and the buckle 221 more secure.

Since the third connection portion 2226 is connected to both the first connection portion 2224 and the second connection portion 2225 , and the third connection portion 2226 is connected to the second connection member 2222 , when the buckle 221 rotates, the second connection member 2222 can be driven to move through the first connection member 2221 .

Of course, in other embodiments, the first connecting member 2221 may also include only the first connecting portion 2224 and the third connecting portion 2226. The first connecting portion 2224 is fixedly connected to the buckle 221, the third connecting portion 2226 is connected to the first connecting portion 2224, and the second connecting member 2222 is rotatably connected to the third connecting portion 2226 around the first axis.

In this way, when the buckle handle 221 rotates, the second connecting member 2222 can also be driven to move through the first connecting member 2221. Moreover, the structure of the first connecting member 2221 is relatively simple, and the manufacturing cost is relatively low.

In order to realize the rotational connection between the second connecting member 2222 and the first connecting member 2221, in some embodiments, as shown in FIG. 12, FIG. 12 is a fourth partial schematic diagram of the locking mechanism 22 provided in the embodiment of the present application, the first connecting member 2221 may include a connecting body 22261 and a clamping shaft 22262. The connecting body 22261 is connected to the buckle 221. The clamping shaft 22262 is connected to the connecting body 22261. The axis of the clamping shaft 22262 coincides with the first axis.

A clamping groove 22221 is formed at one end of the second connecting member 2222. Along the extension direction of the first axis, the clamping groove 22221 penetrates the surfaces of the second connecting member 2222 on opposite sides. The clamping shaft 22262 is located in the clamping groove 22221 and is clamped with the clamping groove 22221. When the buckle 221 rotates relative to the seat armrest 21 (Figure 1), the second connecting member 2222 is rotatably connected with the clamping shaft 22262.

In this way, by opening a clamping groove 22221 on the second connecting member 2222, and making the clamping groove 22221 pass through the opposite sides of the second connecting member 2222 along the extension direction of the first axis, the clamping shaft 22262 can pass through the clamping groove 22221 and be clamped in the clamping groove 22221, and the second connecting member 2222 can rotate around the clamping shaft 22262, thereby realizing the rotational connection with the first connecting member 2221.

Of course, in other embodiments, the first connecting member 2221 may also include only the connecting body 22261. In this case, a clamping groove 22221 is formed on the connecting body 22261, and along the extension direction of the first axis, the clamping groove 22221 penetrates the surfaces of the connecting body 22261 on opposite sides. A clamping shaft 22262 is formed at one end of the second connecting member 2222, and the clamping shaft 22262 is located in the clamping groove 22221 and is clamped with the clamping groove 22221.

In this way, after the clamping shaft 22262 of the second connecting member 2222 passes through the clamping groove 22221 on the first connecting member 2221 and is clamped in the clamping groove 22221 , the second connecting member 2222 and the first connecting member 2221 can also be rotatably connected around the first axis.

The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims (10)

1. A locking mechanism for positioning on a seat armrest to place the seat armrest in a locked or relatively rotated state with respect to a seat, the locking mechanism comprising:

One end of the buckle is connected to the seat armrest in a relatively rotatable manner; and

Spacing subassembly includes:

the traction piece is connected with the other end of the buckle; and

The limiting pieces are connected with the traction pieces and are used for being connected with the seat armrests in a sliding mode; the limiting pieces are used for being clamped with the seat under the drive of the buckle and the traction piece, so that the seat armrest is in a locking state; the limiting parts are also used for being separated from the seat under the drive of the buckles and the traction parts, so that the seat armrest is in a relative rotation state.

2. The locking mechanism of claim 1, wherein the locking mechanism further comprises:

One end of the connecting component is connected with the other end of the buckle, and the other end of the connecting component is connected with the traction piece; the connecting component is used for driving the traction piece and the plurality of limiting pieces to move when the buckle rotates relative to the seat armrest.

3. The locking mechanism of claim 2, wherein the traction member comprises:

one end of the first traction rope is connected with the connecting component;

The adapter is connected with the other end of the first traction rope; and

The plurality of second traction ropes are connected with the adapter at one end; the other end of the second traction rope is connected with one limiting piece.

4. The locking mechanism of claim 2, wherein the connection of the connection assembly to the traction member moves in a first direction when the clasp is rotated relative to the armrest; wherein, the first direction is perpendicular to the rotation axis of the buckle.

5. The locking mechanism of claim 4, wherein the locking mechanism further comprises:

The U-shaped structure is internally provided with a U-shaped channel for being connected with the seat armrest; the traction piece is arranged in the U-shaped channel in a penetrating way, and two ends of the traction piece are positioned outside the U-shaped structure; one end of the traction piece is connected with the connecting component, and the other end of the traction piece is connected with the limiting pieces;

when the connecting component drives the traction piece to move, the movement directions of the two ends of the traction piece are opposite.

6. The locking mechanism of claim 2, wherein the connection assembly comprises:

The first connecting piece is fixedly connected with the buckle; and

One end of the second connecting piece is rotationally connected with the first connecting piece around a first axis, and the other end of the second connecting piece is rotationally connected with the limiting assembly around a second axis;

Wherein, the first axis and the second axis are parallel to the rotation axis of the buckle.

7. The locking mechanism of claim 6, wherein the clasp comprises:

one end of the main body part is used for being connected to the seat armrest in a relative rotation manner; and

A connecting shaft connected to the other end of the main body;

The first connecting piece is provided with a connecting hole; one of the connecting shaft and the hole wall of the connecting hole is provided with a convex part, and the other is provided with a concave part; the connecting shaft penetrates through the connecting hole, and the protruding portion is clamped in the concave portion.

8. The locking mechanism of claim 6, wherein the first connector comprises:

The connecting main body is connected with the buckle; and

The clamping shaft is connected with the connecting main body; the axis of the clamping shaft coincides with the first axis;

A clamping groove is formed at one end of the second connecting piece; the clamping grooves penetrate through the surfaces of two opposite sides of the second connecting piece along the extending direction of the first axis; the clamping shaft is positioned in the clamping groove and is clamped with the clamping groove;

When the buckle rotates relative to the seat armrest, the second connecting piece is rotationally connected with the clamping shaft.

9. A handrail assembly, comprising:

A seat armrest; and

The locking mechanism of any one of claims 1-8, wherein one end of the clasp is rotatably connected to the seat armrest; the limiting component is connected with the seat armrest.

10. A seat assembly, comprising:

A seat; and

The armrest assembly of claim 9, rotatably coupled to the seat; the armrest assembly is used for being clamped with the seat so as to enable the armrest assembly to be in a locking state; the armrest assembly is also configured to be separated from the seat such that the armrest assembly is in a relatively rotated state.