CN210520540U - Seat cushion anti-falling mechanism of standing working chair - Google Patents

Abstract

The utility model relates to a seatpad anti-drop mechanism of work chair stands, the sliding seat includes base, footstock, in the base was located to the footstock, its characterized in that: the top seat side wall can slide upwards on the base seat side wall; the side wall of the base is provided with a second long hole, the length of the second long hole is greater than that of the clamping head, a first connecting rod is arranged in the second long hole, and two ends of the first connecting rod are abutted against the sliding rod; the clamping plate is arranged at the bottom end of the side wall of the top base and is abutted against one side, away from the sliding rod, of the first connecting rod; the top seat is provided with a lifting assembly which can enable the top seat to move upwards relative to the base and enable the clamping plate to be separated from the first connecting rod. The utility model discloses on well sliding seat is based on altitude mixture control structure's basis, add an anti-drop mechanism, its removal that can restrict the seatpad makes the seatpad can not change the angle along with user's health action.

Description

Seat cushion anti-falling mechanism of standing working chair

Technical Field

The utility model belongs to the technical field of the technique of the work chair of standing and specifically relates to a seatpad anti-drop mechanism of work chair of standing.

Background

The standing work chair is a chair with small occupied space and is widely applied to places with high space utilization rate, such as workshops and laboratories.

The existing working chair mainly comprises a sliding seat, a seat cushion and a sliding rod, wherein the seat cushion is usually fixedly arranged on the sliding seat and is made of PU polyurethane foam, so that the working chair is elastic and waterproof, the surface of the working chair accords with human engineering, and good comfort is brought to users.

For the convenience of use of users, the sliding seat is usually arranged on the sliding rod in a sliding mode, a hole for the sliding rod to penetrate through is formed in one end of the sliding seat, the hole located at the top of the sliding seat is a first long hole, a plastic pad is clamped on the inner wall of the hole located at the bottom of the sliding seat, the inner wall of the plastic pad is circular, and the sliding rod can slide in the circular shape of the plastic pad.

The sliding seat can swing up and down relative to the sliding rod through the first long hole, and the sliding rod is tightly attached to one end of the short side of the first long hole; be equipped with the dop in the sliding seat, it is close to first slot hole minor face department, is equipped with a plurality of card holes that parallel that match with the dop on the slide bar, and when the first slot hole other end moved to the slide bar on, the dop breaks away from the card hole.

The clamping head is arranged on the short edge of the first long hole far away from the center of the sliding seat. Therefore, the gravity of a user can apply downward pressure to the sliding seat, and if the structure is adopted, the downward pressure can make the chuck have the tendency of moving towards the clamping hole, so that the firmness of the clamping structure is enhanced; if the dop is located on the first slot hole is close to the minor face at slip center, then decurrent pressure can make the dop have the trend of keeping away from the card hole and removing, can weaken joint structure's fastness.

However, in the process of using the chair, the user can drive the seat cushion by rising or leaning backwards and other actions, so that the seat cushion rotates, the clamping head possibly breaks away from the clamping hole, the sliding seat slides downwards along the sliding rod, the use of the user is affected, and potential safety hazards are brought.

SUMMERY OF THE UTILITY MODEL

The utility model provides a seatpad anti-drop mechanism of work chair stands, the sliding seat adds a limit structure based on altitude mixture control structure's basis, and its removal that can restrict the seatpad makes the seatpad can not change the angle along with user's health action.

The above object of the present invention can be achieved by the following technical solutions:

a seat cushion anti-drop mechanism of a standing working chair comprises a sliding seat and a top seat, wherein the top seat is arranged in a base, and the side wall of the top seat can slide upwards on the side wall of the base;

the side wall of the base is provided with a second long hole, the length of the second long hole is greater than that of the clamping head, a first connecting rod is arranged in the second long hole, and two ends of the first connecting rod are abutted against the sliding rod; the clamping plate is arranged at the bottom end of the side wall of the top base and is abutted against one side, away from the sliding rod, of the first connecting rod; the top seat is provided with a lifting assembly which can enable the top seat to move upwards relative to the base and enable the clamping plate to be separated from the first connecting rod.

By adopting the technical scheme, if the sliding seat rotates on the sliding rod, the lifting assembly needs to be operated, so that the top seat moves upwards relative to the base, and the clamping plate is separated from the first connecting rod; then the sliding seat is rotated upwards, the top end of the sliding seat can rotate backwards along the first long hole, the sliding rod can support the first connecting rod, the first connecting rod can move in the second long hole until the clamping head is separated from the clamping hole, and at the moment, the sliding seat can only perform height adjustment on the sliding rod; therefore, the top end of the sliding seat cannot rotate backwards along the first long hole without operating the lifting assembly, the seat cushion and the sliding seat cannot rotate backwards even if a user performs backward pitching or rising actions and the like, the clamping head cannot be separated from the clamping hole, and the sliding seat cannot slide downwards along the sliding rod.

Furthermore, the lifting assembly comprises a handle, the handle is rotatably arranged in the top seat, an arc-shaped groove is formed in the side wall of the handle, the arc center of the arc-shaped groove faces the rotating position of the handle and the top seat, and one forward end of the arc-shaped groove is inclined downwards;

the base lateral wall is equipped with the third connecting rod, the footstock lateral wall is equipped with the third slot hole, the joint structure between directional footstock of its major axis direction and the base, the third connecting rod passes third slot hole and arc wall, and the arc wall one end backward is located to the third connecting rod.

Through adopting above-mentioned technical scheme, relative footstock upwards rotates the handle, and the arc wall can move forward one end from backward one end on the third connecting rod, and at this moment the handle can drive the footstock along third slot hole rebound to even take the cardboard to move upwards, make the cardboard break away from first connecting rod.

Furthermore, the clamping structure between the top seat side wall and the base comprises a clamping groove formed in the bottom of the top seat side wall and a second connecting rod arranged on the side wall of the base, and the clamping groove is formed below the clamping plate and can be clamped on the second connecting rod.

Through adopting above-mentioned technical scheme, through the card solid effect of draw-in groove and the card of second connecting rod, when the cardboard butt on first connecting rod, the footstock can not rotate on the base, can make the seatpad be in stable condition.

Furthermore, a fourth connecting rod is arranged on the side wall of the top seat and is arranged between the second connecting rod and the third connecting rod, and a hole for the fourth connecting rod to pass through is formed in the side wall of the handle and is arranged below the arc-shaped groove.

Through adopting above-mentioned technical scheme, the handle passes through the fourth connecting rod and rotates to be connected on the footstock.

Further, it still includes the second subassembly of kick-backing to lift the subassembly, and it is the torsional spring, the handle lateral wall is equipped with the second card foot, and the torsional spring cover is located on the fourth connecting rod, and the torsional spring both ends respectively the butt on second card foot and third connecting rod.

By adopting the technical scheme, the two ends of the torsion spring can be folded by lifting the handle upwards, after the lifted handle is loosened, the elastic force generated at the two ends of the torsion spring can act on the third connecting rod and the second clamping pin, the third connecting rod is fixed on the base, the torsion spring can enable the second clamping pin to move away from the third connecting rod, the handle can move downwards, the arc-shaped groove can move backwards again from the forward end on the third connecting rod, the handle can be restored to the original position, and the top seat can also be restored to the original position.

Furthermore, the end part of the first connecting rod, which is close to the sliding rod, is provided with a first rebound assembly which is a torsion spring, the torsion spring is sleeved on the first connecting rod, the side wall of the base is provided with two first clamping feet, and two ends of the torsion spring are respectively arranged on the first clamping feet.

By adopting the technical scheme, the elastic force generated by the torsion spring can act on the first connecting rod all the time, so that the first connecting rod is always abutted against the sliding rod.

Furthermore, the clamping grooves are provided in plurality.

Through adopting above-mentioned technical scheme, the draw-in groove of accessible selection different positions is fixed on the second connecting rod to can make suitable adjustment to the angle of seatpad.

To sum up, the beneficial effects of the utility model are that: the user can not directly break the sliding seat and adjust the pitching angle of the sliding seat, and the user can adjust the pitching swing of the sliding seat only by lifting the assembly, so that the angle of the seat cushion relative to the sliding rod can not be changed along with the body movement of the user.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective (shown exploded with the base, handle and top);

FIG. 3 is an exploded view of the side walls of the bottom seat and the top seat and the handle of the present invention;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

FIG. 5 is an enlarged view at A in FIG. 1;

fig. 6 is an enlarged view at B in fig. 2.

In the figure, 1, a sliding rod; 11. a clamping hole; 2. a sliding seat; 21. a first long hole; 22. a plastic pad; 23. clamping a head; 24. a base; 241. a fixing plate; 2411. a second long hole; 2412. a second link; 2413. a third link; 242. a circular hole; 25. a top seat; 251. a card slot; 252. clamping a plate; 253. a third long hole; 254. a fourth link; 26. a first link; 3. a first rebounding assembly; 31. a first clamping pin; 4. a lifting assembly; 41. a handle; 411. an arc-shaped slot; 42. a second rebound assembly; 421. and a second clamping pin.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 3 and 4 show the connection structure of the top seat 24, the top seat 25 and the handle 41, the lengths of the first connecting rod 26, the second connecting rod 2412, the third connecting rod 2413 and the fourth connecting rod 254 are extended, only the side wall of the top seat 25 and the side wall of the handle 41 are shown, and the part of the sliding rod 1, which is shielded by the bottom seat 24, is hidden.

The first embodiment is as follows:

with reference to fig. 2 and 3, based on the structure of the existing standing working chair, the sliding seat 2 is divided into a base 24 and a top seat 25, and a hole for the sliding rod 1 to pass through is formed in the base 24 in the prior art; the side walls of the base 24 are two fixing plates 241 welded on the base 24, and the top seat 25 is rotatably arranged between the two fixing plates 241; the fixing plate 241 is provided with a second long hole 2411, the arrangement direction of the long axis of which is the same as the long axis direction of the first long hole 21; the second long hole 2411 is traversed by the first link 26, wherein the width of the second long hole 2411 is larger than the diameter of the first link 26; the first link 26 is disposed at one end of the second long hole 2411 close to the sliding rod 1 through the first resilient assembly 3, and the first link 26 abuts against the sliding rod 1.

Referring to fig. 3, the first resilient member 3 is a torsion spring, which is sleeved on the end of the first connecting rod 26, two first locking pins 31 are disposed on the fixing plate 241, and two ends of the torsion spring are respectively overlapped on the first locking pins 31; when the user swings the sliding seat 2 upwards, the first long hole 21 moves on the sliding rod 1, and the first link 26 moves in the second long hole 2411 under the extrusion of the sliding rod 1, the torsion spring in the first resilient assembly 3 can make the first link 26 move reversely after the user releases the sliding seat 2, and the sliding seat 2 can move downwards spontaneously and return to the original position under the limitation of the disengaged first link 26.

With reference to fig. 3 and 4, a clamping groove 251, a second connecting rod 2412 rotatably or fixedly arranged on the fixing plate 241 and capable of being clamped by the clamping groove 251, and a lifting assembly 4 are arranged at the bottom end of the side wall of the top seat 25, a clamping plate 252 is further integrally formed at the bottom end of the side wall of the top seat 25, and the clamping plate 252 is arranged above the clamping groove 251; the catch plate 252 abuts against the side of the first link 26 away from the slide bar 1, and the lifting of the assembly 4 can disengage the catch groove 251 from the second link 2412, and simultaneously can disengage the catch plate 252 from the slide bar 1.

The catch plate 252 is fixed to the first link 26 by the engagement between the catch groove 251 and the second link 2412; referring to fig. 3, the first link 26 is constrained by the catch plate 252 and the slide rod 1 to be fixed in the second long hole 2411, so that the user cannot rotate the slide base 2 without separating the catch plate 252 from the first link 26; before rotating the sliding seat 2, the user must use the lifting assembly 4 to disengage the slot 251 from the second link 2412 and disengage the catch plate 252 from the sliding rod 1, so that the sliding seat 2 is not restricted from rotating.

A third long hole 253 is arranged on the side wall of the top seat 25, the long axis of the third long hole 253 faces downwards, and a third connecting rod 2413 is arranged between the fixing plates 241; the third link 2413 penetrates the third long hole 253; the lifting assembly 4 shown at E in figure 5 comprises a handle 41, a second resilient assembly 42 which resiliently rotates the handle 41.

Referring to fig. 4, the side wall of the handle 41 is provided with an arc slot 411; the third connecting rod 2413 is arranged at the backward end of the arc-shaped slot 411, and the forward end of the arc-shaped slot 411 is inclined downwards; the side wall of the top seat 25 is provided with a fourth connecting rod 254 arranged between the second connecting rod 2412 and the third connecting rod 2413, the side wall of the handle 41 is provided with a hole for the fourth connecting rod 254 to pass through, the hole is arranged below the arc-shaped slot 411, the handle 41 is rotatably connected to the top seat 25 through the fourth connecting rod 254, and the arc center of the arc-shaped slot 411 faces the fourth connecting rod 254.

Referring to fig. 4, the second resilient member 42 is also a torsion spring, the second locking leg 421 is integrally formed in the sidewall of the handle 41, the torsion spring is sleeved on the fourth link 254, and two ends of the torsion spring are respectively overlapped on the second locking leg 421 and the third link 2413. After the lifting assembly 4 moves upwards, the torsion spring is squeezed to generate an outward expanding elastic force, and after the lifting assembly 4 is loosened, the handle 41 is restored to the original position by the reverse elastic force generated by the torsion spring.

In this embodiment, the round holes 242 shown in fig. 1 are disposed on two sides of the base 24, and the round holes 242 are disposed at corresponding positions on two ends of the first connecting rod 26, so that the first connecting rod 26 can be installed in the base 24 through the two round holes 242.

In this embodiment, the user can also adjust the angle of the seat cushion by lifting the handle 41 upward, the arc slot 411 can move on the third link 2413 along the arc, because the third link 2413 is disposed on the fixing plate 241, the third link 2413 will not move, so the third link 2413 will move from the backward end of the arc slot 411 to the downward inclined forward end, so the fourth link 254 will move toward the third link 2413, and the seat cushion will move upward relative to the sliding seat 2 through the third long hole 253, and then the locking groove 251 will be disengaged from the second link 2412, at this time, the rotation of the seat cushion is not limited, and the user can select a proper locking groove 251 from fig. 1A to adjust a proper rotation angle; when the handle 41 is released, the seat cushion will return to its original position under the action of the second resilient member 42, so that the corresponding engaging groove 251 is engaged with the second connecting rod 2412.

The utility model discloses an implement the principle and do:

referring to fig. 3 and 4, when the handle 41 is lifted upwards, the arc slot 411 can move on the third link 2413 along the arc thereof, and since the third link 2413 is disposed on the fixing plate 241, the third link 2413 will not move, so that the arc slot 411 will move from the backward end to the downward-inclined forward end, and the fourth link 254 will move toward the third link 2413, and the top seat 25 will move upwards relative to the fixing plate 241 through the third long hole 253, and then the engaging groove 251 will disengage from the second link 2412, and the engaging plate 252 will also disengage from the first link 26.

The handle 41 is continuously lifted upwards, so that the sliding seat 2 can be driven to swing upwards relative to the sliding rod 1, in the process, the first connecting rod 26 is extruded by the sliding rod 1 and fixed relative to the sliding rod 1, the second long hole 2411 moves on the first connecting rod 26 along with the sliding seat 2 swinging upwards, meanwhile, the first long hole 21 moves on the sliding rod 1 until the clamping head 23 is separated from the clamping hole 11, the sliding table does not limit the up-and-down movement on the sliding rod 1, and the height of the sliding seat 2 can be adjusted;

after the adjustment, the handle 41 is released, the first connecting rod 26 is reversely rotated by the resilience force generated by the first resilience component 3 until the first long hole 21 and the sliding rod 1 recover to the original position, at this time, the chuck 23 can be clamped on the clamping hole 11 at the corresponding position, and the handle 41 reversely rotates by the resilience force generated by the second resilience component 42 until the clamping groove 251 is clamped on the second connecting rod 2412 again, and the clamping plate 252 is abutted on the first connecting rod 26 again.

Example two:

the anti-falling mechanism of the standing working chair is provided based on the first embodiment, and is different from the first embodiment in that four clamping grooves are formed in the angle adjusting mechanism of the standing working chair.

In this embodiment, the user can realize the angle modulation to the seatpad: the handle 41 is lifted upwards, the arc-shaped slot 411 can move on the third connecting rod 2413 along an arc, and because the third connecting rod 2413 is arranged on the fixing plate 241, the third connecting rod 2413 cannot move, so the third connecting rod 2413 can move from the backward end of the arc-shaped slot 411 to the downward-inclined forward end, the fourth connecting rod 254 can move towards the third connecting rod 2413, the seat cushion can move upwards relative to the sliding seat 2 through the third long hole 253, then the clamping groove 251 can be separated from the second connecting rod 2412, the rotation of the seat cushion is not limited, and a user can select a proper clamping groove 251 from the position shown in fig. 1A to adjust a proper rotation angle; when the handle 41 is released, the seat cushion will return to its original position under the action of the second resilient member 42, so that the corresponding engaging groove 251 is engaged with the second connecting rod 2412.

The embodiment of this embodiment is the preferred embodiment of the present invention, not limiting in proper order the utility model discloses a protection scope, the event: all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a seatpad anti-drop mechanism of working chair stands, includes sliding seat (2) of constituteing by base (24), footstock (25), in base (24) was located in footstock (25), its characterized in that: the side wall of the top seat (25) can slide upwards on the side wall of the base (24);

a second long hole (2411) is formed in the side wall of the base (24), the length of the second long hole (2411) is greater than that of the clamping head (23), a first connecting rod (26) is arranged in the second long hole (2411), and two ends of the first connecting rod (26) are abutted to the sliding rod (1); the bottom end of the side wall of the top seat (25) is also provided with a clamping plate (252), and the clamping plate (252) is abutted against one side, away from the sliding rod (1), of the first connecting rod (26); the top seat (25) is provided with a lifting assembly (4) which can enable the top seat (25) to move upwards relative to the base (24) and enable the clamping plate (252) to be separated from the first connecting rod (26).

2. The seat cushion drop-off prevention mechanism of a standing working chair according to claim 1, wherein:

the lifting assembly (4) comprises a handle (41), the handle (41) is rotatably arranged in the top seat (25), an arc-shaped groove (411) is formed in the side wall of the handle (41), the arc center of the arc-shaped groove (411) faces to the rotating position of the handle (41) and the top seat (25), and one forward end of the arc-shaped groove (411) is downward inclined;

the base (24) lateral wall is equipped with third connecting rod (2413), footstock (25) lateral wall is equipped with third slot hole (253), and the joint structure between its major axis direction point footstock (25) and base (24), third slot hole (253) and arc wall (411) are passed in third connecting rod (2413), and arc wall (411) rearward one end is located in third connecting rod (2413).

3. The seat cushion drop-off prevention mechanism of the standing work chair according to claim 2, wherein: the clamping structure between the side wall of the top seat (25) and the base (24) comprises a clamping groove (251) arranged at the bottom of the side wall of the top seat (25) and a second connecting rod (2412) arranged on the side wall of the base (24), wherein the clamping groove (251) is arranged below the clamping plate (252) and can be clamped on the second connecting rod (2412).

4. The seat cushion drop-off prevention mechanism of the standing work chair according to claim 2, wherein: the side wall of the top seat (25) is provided with a fourth connecting rod (254) which is arranged between the second connecting rod (2412) and the third connecting rod (2413), the side wall of the handle (41) is provided with a hole for the fourth connecting rod (254) to pass through, and the hole is arranged below the arc-shaped groove (411).

5. The seat cushion drop-off prevention mechanism of the standing work chair according to claim 4, wherein: the lifting assembly (4) further comprises a second rebound assembly (42) which is a torsion spring, a second clamping pin (421) is arranged on the side wall of the handle (41), the torsion spring is sleeved on the fourth connecting rod (254), and two ends of the torsion spring are respectively abutted to the second clamping pin (421) and the third connecting rod (2413).

6. The seat cushion drop-off prevention mechanism of a standing working chair according to claim 1, wherein: the end part of the first connecting rod (26) close to the sliding rod (1) is provided with a first rebound assembly (3) which is a torsion spring, the torsion spring is sleeved on the first connecting rod (26), the side wall of the base (24) is provided with two first clamping feet (31), and the two ends of the torsion spring are respectively arranged on the first clamping feet (31).

7. The seat cushion drop-off prevention mechanism of the standing work chair according to claim 3, wherein: the clamping grooves (251) are provided in plurality.

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