CN114831456A - Waist that possesses elasticity locking function holds in palm seat - Google Patents

Abstract

The invention relates to the field of seat design and manufacture, in particular to part design of an elastic seat. The technical purpose of the invention is realized by the following technical scheme: a waist support seat with an elastic locking function comprises a seat body, a main back body and a waist support, and further comprises a base, a rotating arm rotatably connected with the base and an elastic body I for providing elasticity for the rotating arm in the rotating process relative to the base; the waist support is connected with the rotating arm through an elastic body II; the locking device is used for locking the relative position of the rotating arm relative to the base. The invention aims to overcome the defects of the prior art and provides the waist support seat with the elastic locking function.

Description

A lumbar support seat with elastic locking function

technical field

The invention relates to the field of seat design and manufacture, in particular to the component design of an elastic seat.

Background technique

Seat is a kind of furniture that is very widely used in daily work. It usually includes base, backrest, support structure, armrest and other components. In order to meet people's individual needs and bring a more comfortable and healthy experience, the structure of the seat And features are constantly improving. When users use the seat, they often rely on the base and backrest to support their buttocks and back, while the support for the waist is relatively weak, and the muscles and vertebrae of the lower back of the human body will bear the pressure of the upper part of the human body. Muscle strain and vertebral disease bring inconvenience to people in study, life and work.

In recent years, seats with lumbar support are appearing on the market in order to provide lumbar support. For example, a Chinese patent document with publication number CN201620974125.9 discloses a lumbar support device for a seat. In the technical solution, a lumbar support is connected to the backrest, which provides a good support force for the user's waist, makes the sitting posture straight and has a good protection function for the lumbar vertebra. However, the existing lumbar support seat has the defect that the lumbar support does not fit closely with the human body, that is, when the user's sitting posture is adjusted, such as leaning forward, the lumbar support often cannot be telescopically adjusted with the movement of the human body, and cannot continue to be adjusted. It can effectively fit the human body to support the waist, and the use effect of the waist support is not ideal.

In this context, there are also improved technical solutions. For example, a Chinese patent document with publication number CN201711381616.8 discloses a lumbar support seat. The lumbar support can follow the front and rear movements of the human body, thereby providing a supporting force.

Then, in the actual market, this kind of solution has certain defects: first, the support of this kind of seat is relatively rigid, and the human comfort needs to be improved; secondly, the structure of this kind of seat is complicated, and its elasticity provides and chasing back. The function is provided by the gas spring, and the manufacturing and assembly costs of the gas spring are relatively high, which leads to higher manufacturing costs on the production side and higher sales prices on the sales side; third, and most importantly, under this structure, the lumbar support Locking depends on the cooperation of the valve and the pawl to lock. On the one hand, the matching structure of the valve and the pawl further increases the manufacturing cost. On the other hand, the valve must be close to the hydraulic rod, and the pawl, as the user's operating part, must be set on the outside of the seat, which makes the valve and the pawl. The layout positions of the components are far apart, and third-party components are required for connection, which further increases the complexity and cost of components.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a lumbar support seat with an elastic locking function. , the cost is controllable.

The above technical purpose of the present invention is achieved through the following technical solutions: a lumbar support seat with an elastic locking function, comprising a seat body, a main back body and a lumbar support, a base, and the base A rotating arm that is rotatably connected and an elastic body 1 that provides elastic force for the rotating process of the rotating arm relative to the base; the waist support is connected to the rotating arm through an elastic body two; The locking device of the relative position of the base.

As a preferred option of the present invention, the rotating arm includes matching teeth, and the locking device includes a locking disk that is close to and away from the matching teeth under the operation of the operating member, and the locking disk is provided with a mechanism for engaging with the matching teeth. Toothed locking teeth.

As a preferred aspect of the present invention, the rotating arm includes a connecting cylinder rotatably connected to the base and an arm body connected to the connecting cylinder, the second elastic body is connected to the arm body, and the matching teeth are located at the The lower surface of the connecting cylinder is arranged in a circular array, and the locking device is located below the connecting cylinder.

As a preferred option of the present invention, the locking device further includes a resilient member for providing elastic force for the locking disc to approach the connecting cylinder.

As a preferred embodiment of the present invention, the rotating arm includes an extension disk, and the locking device includes a clamping member for clamping the extension disk so as to prevent the rotation arm from rotating.

As a preferred option of the present invention, the waist support is connected with a fixed shaft, and the fixed shaft is inserted into the second elastic body.

As a preferred embodiment of the present invention, the second elastic body is in the shape of a long cylinder, the second elastic body is provided with an escape groove, and a plurality of the avoidance grooves are arranged in the circumferential direction of the second elastic body.

As a preferred option of the present invention, the waist support includes a connecting arm, and the connecting arm is connected to the second elastic body; the waist support includes an outer frame body and an inner frame body, and the outer frame body and the inner frame body They are respectively connected with different positions in the length direction of the connecting arm.

As a preferred option of the present invention, there is one waist support, and the two rotating arms are connected to one waist support.

As a preference of the present invention, there are two waist supports, and the two rotating arms are respectively connected to the two waist supports.

To sum up, the present invention has the following beneficial effects:

1. The structure of the locking device and the resilient member is simple, and the production cost and installation cost are controllable.

2. In addition, the present invention performs locking operation on the rotating arm. The rotating arm itself is located near the main back and is close to the hand of the human body, so the connection cost is also low and the user operation is more convenient.

3. Switching the rotating arm between the locked state and the free state through the locking structure will give the user a switch between two support modes of "one-stage elastic support" and "two-stage elastic support", and the user's experience is different.

4. When the user squeezes the waist support on the backrest, the waist support will be subjected to two elastic forces of the second elastic body and the first elastic body, and the elastic force is more reliable.

5. The elastic direction of the elastic body 2 is the front and rear direction, and the elastic direction of the elastic body 1 is the horizontal rotation direction. The elastic forces in different directions cooperate with each other, which can give elastic feedback to the user's different actions and different pressures, and improve the seat back. Depend on comfort.

6. The selection of elastic components can be made of torsion springs, springs, elastic columns and other components, and the cost is controllable.

7. Double frame and double connection can provide better lateral fixing force of the connecting arm and increase the stability of the connection.

8. The connecting arm is designed in an arc shape, and the direction of the arc center is close to the user's body, which can better fit the curve of the waist and back of the human body.

9. The arm body is a horizontal arc design, and the arc center direction is backward. On the one hand, this design makes the arm body and the connecting arm more closely attached, and on the other hand, the arc center design provides a space for avoidance behind the seat, which is in line with the thin design of the backrest of modern seat design.

10. The setting of avoiding the empty groove makes the elastic body 2 more easily deformed when it is squeezed, thereby making the user's elastic experience more soft.

11. The waist 3 and the main back are kept connected, and independent from the stool body and the armrest. When the main back can be lowered to provide the function of lying on the back, the lumbar support is also moved synchronously.

Description of drawings

Fig. 1 is the front view of embodiment one;

Figure 2 is a detailed enlarged view of the waist support;

FIG. 3 is a schematic view of the locking device after the casing is hidden.

In the figure: 1. Stool body, 2. Main back body, 3. Lumbar support, 31. Main body, 311, Outer frame body, 312, Inner frame body, 32, Connecting arm, 321, Rear section, 4. Armrest , 51, base, 52, rotating arm, 521, connecting cylinder, 5211, matching teeth, 522, arm body, 5221, front convex section, 6, elastic body 2, 61, avoidance slot, 7, fixed shaft, 8 , Locking device, 81, Locking disc, 811, Locking teeth, 82, Main block, 83, Operating member, 91, Chair foot assembly, 911, Wheel body, 92, Headrest.

Detailed ways

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

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as needed after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Embodiment 1, as shown in FIG. 1, a lumbar support seat with elastic locking function, comprising a seat body 1 and a main back body 2, the lower surface of the seat body 1 is connected with a seat leg assembly 91, which is The wheel body 911 is included. A headrest 92 is connected to the main back body 2 . Armrests 4 are also installed on both sides of the stool body 1 .

As shown in FIG. 2 and FIG. 3 , the waist support 3 is connected to the main back body 2 . Specifically, the waist support 3 includes a frame-shaped main body 31 , and a connecting arm 32 is connected to the main body 31 . The connecting arm 32 generally extends laterally in the horizontal direction, and in this embodiment, a double-frame double-connection method is adopted. That is, the main body 31 includes an outer frame body 311 and an inner frame body 312 , which are respectively connected to different positions of the connecting arm 32 . The outer frame body 311 is connected at the root of the connecting arm 32 , and the inner frame body 312 is connected at a position where the connecting arm 32 is closer to the center of the main body 31 . This arrangement is because the connecting arm 32 is a main load-bearing component, and the double frame and double connection can provide a better lateral fixing force of the connecting arm 32 and increase the stability of the connection.

The connecting arm 32 is designed in an arc shape, and the arc center direction is close to the user's body, that is, the rear sticking section 321 in the figure. Such an arc design can better fit the curve of the waist and back of the human body.

As shown in FIG. 2 and FIG. 3 , the base 51 is fixedly mounted on the main back body 2 , and the rotating arm 52 is rotatably connected with it, and the rotation direction is horizontal rotation. The rotational connection structure can adopt the common manner in the prior art, such as a rotating shaft and the like. The rotating arm 52 includes a cylindrical connecting cylinder 521 in which an elastic body 1 is installed. The first elastic body connects the rotating arm 52 and the base 51 respectively, and provides restoring elastic force for the relative rotation of the two. The elastic body can use mature elastic components in the prior art, such as extruded elastic blocks, such as torsion springs.

An arm body 522 is fixedly connected to the connecting cylinder 521 . In the horizontal direction, the front is close to the human body and the rear is away from the human body, and the arm body 522 is behind the connecting arm 32 . The arm body 522 is also designed in a horizontal arc shape, that is, the front convex section 5221 in the figure, but opposite to the connecting arm 32, its arc center direction is backward. On the one hand, this design makes the arm body 522 and the connecting arm 32 more closely attached, and on the other hand, the arc center design provides a space for avoidance behind the seat, which conforms to the thin design of the backrest of modern seat design.

The end of the arm body 522 is connected with the second elastic body 6 , and the second elastic body 6 is also connected with the connecting arm 32 . The elastic body 6 can be a common elastic component in the prior art, such as an elastic column or a compression spring made of elastic material. In this embodiment, elastic columns are used. The second elastic member 6 is connected with the connecting arm 32 and the rotating arm 52 , and provides a restoring elastic force for the waist support 3 when the waist support 3 is pressed by the human body.

So far, in this case, when the user squeezes the waist support 3 on the backrest, the waist support 3 will be subjected to two elastic forces of the second elastic body 6 and the first elastic body, and the elastic force is more reliable; The elastic direction of the elastic body 1 is the horizontal rotation direction, and the elastic forces in different directions cooperate with each other, which can give elastic feedback to the user's different actions and different pressing forces, and improve the comfort of the seat back.

In this embodiment, the second elastic body 6 has a cylindrical shape, and a plurality of avoidance slots 61 are formed in its axial direction, which makes it easier to deform when squeezed, thereby making the user's elastic experience more soft.

In this example, there are two sets of rotating arms 52 , one set on the left and right of the seat. The waist support 3 is an integral design and is a set. The two sets of rotating arms 52 are jointly connected to one waist support 3 . At this time, since the movement trajectory of the rotating arm 52 is a horizontal rotation, the horizontal distance between the two connecting arms 32 also changes. In this case, the fixed shaft 7 is used to pass through the connecting arm 32 and insert the second elastic body 6 . Since the second elastic body 6 is made of a cylindrical elastic material, it can deform not only in its axial direction, but also in its radial direction, so as to adapt to changes in the horizontal distance between the two connecting arms 32 .

In addition, in this embodiment, since the lumbar support 3, the base 51 and other components are directly or indirectly installed on the main back body 2, instead of being installed on the stool body 1 or on the armrest 4, the lumbar support is 3 maintains connectivity with the main back body 2, and maintains independence from the stool body 1 and the armrest 4. In some products, when the main back body 2 can be lowered to provide the function of lying on the back, the lumbar support 3 also moves synchronously.

As shown in FIG. 3 , the outer casing of the locking device 8 is hidden in FIG. 3 to facilitate the observation of the internal structure. There is also a locking device 8 for locking the horizontal rotation angle of the rotating arm 52 , thereby locking the position of the waist support 3 . When the rotating arm 52 is stationary relative to the main back body 2, the seat changes from "two-stage elastic provision" to "one-stage elastic provision", and the elastic support for the user's waist only comes from the elastic body 2 6, and the user obtains reliable, Tough lumbar support.

Specifically, the lower surface of the connecting cylinder 521 is provided with a plurality of matching teeth 5211, which are evenly arranged in a circular array. The operating member 83 can be a traction rod or a traction rope, the lower end of which is extended to a suitable position for direct operation by the user, and the upper end of which is connected to the main block 82 . The main block 82 can be used as a connecting medium to connect to the lower surface of the locking plate 81 . The upper surface of the locking plate 81 includes a plurality of locking teeth 811 for engaging with the mating teeth 5211 .

The locking device 8 is provided with a resilient member, such as a spring (not shown). One end of the spring can be connected with a stationary member, such as the main back body 2 or the base 51, and the other end can be in conflict with the locking plate 81, so that the locking plate 81 is close to the connecting cylinder 521, that is, an upward elastic force in FIG. 3 . When the user pulls down the locking plate 81 against the elastic force through the operating member 83, the rotating arm 52 is in a free state and can rotate freely; when the user does not pull down the operating member 83, the locking plate 81 moves up under the action of the elastic force and locks the Connecting the cylinder 521, the rotating arm 52 is in a locked state at this time and cannot be rotated.

In this case, on the one hand, the locking device 8 and the resilient member have simple structures, and the production cost and installation cost are controllable. On the other hand, by locking the rotating arm, the rotating arm itself is located near the main back body 2 and is close to the human hand, so the connection cost is also low and the user operation is more convenient.

Embodiment 2: The difference from Embodiment 1 is the design of the waist support 3, which is not an integrated design, but a separate design. That is, the number of lumbar supports 3 is two, and the middle is not connected. Each waist support 3 is individually connected to a rotating arm 52 through an elastic body 2 6 .

Embodiment 3: The difference from Embodiment 1 is that there is no resilient member in the locking device 8, and the user relies on the operating member 83 to move the locking disc 81 up and down.

Embodiment 4: The difference from Embodiment 1 is the automatic design. Specifically, the up and down movement of the locking disc 81 in the locking device 8 does not rely on the user to manually pull the traction, but rely on an electric transmission component. Electric screws, racks and pinions, electric pneumatic rods, etc. in the prior art can be used.

Embodiment 5: The difference from Embodiment 1 is that the structure of the locking device 8 is different. Specifically, there are no matching teeth 5211 on the lower side of the connecting cylinder 521, but a circle of extending disks. The locking device 8 includes a clamping member, such as a jaw, when the locking position needs to be braked, it is only necessary to control the jaw to open and clamp the extension disc to lock the position of the connecting cylinder 521, thereby locking The extension angle of the rotating arm 52 .

Claims (10)

1. A lumbar support seat with an elastic locking function, comprising a stool body (1), a main back body (2) and a lumbar support (3), characterized in that it further comprises a base (51), a The base (51) is rotatably connected to the rotating arm (52) and the elastic body provides elastic force for the rotating process of the rotating arm (52) relative to the base (51); the waist support (3) passes through the elastic body The second (6) is connected with the rotating arm (52); it also includes a locking device (8) for locking the relative position of the rotating arm (52) relative to the base (51). 2 . The lumbar support seat with elastic locking function according to claim 1 , wherein the rotating arm ( 52 ) comprises a mating tooth ( 5211 ), and the locking device ( 8 ) is included in the Under the operation of the operating member (83), it is close to the locking plate (81) away from the matching teeth (5211), and the locking plate (81) is provided with a locking plate for engaging with the matching teeth (5211). Teeth (811). 3. The lumbar support seat with elastic locking function according to claim 2, wherein the rotating arm (52) comprises a connecting cylinder (521) rotatably connected to the base (51) and an arm body (522) connected to the connecting cylinder (521), the second elastic body (6) is connected to the arm body (522), and the mating teeth (5211) are located in the connecting cylinder (521) The lower surface is arranged in a circular array, and the locking device (8) is located below the connecting cylinder (521). 4. The lumbar support seat with elastic locking function according to claim 3, characterized in that: the locking device (8) further comprises a device for providing the locking disc (81) to the The connecting cylinder (521) is close to the resilient member that provides elastic force. 5. The lumbar support seat with elastic locking function according to claim 1, characterized in that: the rotating arm (52) comprises an extension disk, and the locking device (8) comprises a A clamp that holds the extension disc to prevent the rotation arm (52) from rotating. The lumbar support seat with elastic locking function according to any one of claims 1-5, characterized in that: the lumbar support (3) is connected with a fixed shaft (7), and the fixed shaft (7) Insert into the second elastic body (6). 7 . The lumbar support seat with elastic locking function according to claim 6 , wherein the second elastic body ( 6 ) is in the shape of a long cylinder, and the second elastic body ( 6 ) is provided with a lumbar support seat. 8 . Avoidance hollow grooves (61), a plurality of the avoidance hollow grooves (61) are arranged in the circumferential direction of the second elastic body (6). The lumbar support seat with elastic locking function according to claim 1, characterized in that: the lumbar support comprises a connecting arm (32), the connecting arm (32) and the elastic body two (6) Connection; the lumbar support (3) includes an outer frame (311) and an inner frame (312), and the outer frame (311) and the inner frame (312) are respectively connected to the connecting arms (32) Connect at different positions in the length direction. 9. The lumbar support seat with elastic locking function according to any one of claims 1-5, characterized in that: the lumbar support (3) is one, and the rotating arms (52) are two. Connect with one of the lumbar supports (3). 10. The lumbar support seat with elastic locking function according to any one of claims 1-5, characterized in that: there are two said lumbar supports (3), and two said rotating arms (52) ) are respectively connected with the two lumbar supports (3).

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