Seat

Abstract

The utility model discloses a seat. The seat comprises a base and a seat body, the backrest bracket is rotatably connected with the base and is used for connecting a backrest; the sliding part is arranged on the backrest bracket in a sliding manner; the headrest is arranged on the sliding piece; when the backrest support rotates, the sliding piece slides on the backrest support so as to drive the headrest to move. When a user sits on the seat, the body leans on the backrest backwards and leans backwards, the backrest and the backrest support can rotate relative to the base, at the moment, the sliding piece slides (such as slides downwards) on the backrest support to drive the headrest to move (such as slides downwards), and the headrest follows the head and / or neck of the user all the time. Enough support is provided for the head and / or neck of the user, so that the comfort of the user in using the seat is improved; and moreover, the supporting angle of the headrest for the head and / or neck of the user is basically unchanged, so that the sight of the user is always kept in a head-up state, and the back-leaning office can be supported.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field, especially a kind of chair. BACKGROUND

[0002] In office, study room and the like, chair is generally visible, which can meet the needs of people sitting working, learning or resting. Generally speaking, chair has base, backrest, cushion, headrest and the like, when people use chair, head and / or neck can be naturally leaned to headrest, and headrest provides support for head and neck.

[0003] In related technology, headrest is fixed on backrest, when user leans back on chair, headrest rotates rearward with backrest, the relative position between headrest and backrest remains unchanged, which leads to that user's head and / or neck lose support or support is not in place, and overall comfort is poor, and in this process, with the increase of leaning angle, user's line of sight gradually changes from level to upward, so as to support leaning back office. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of chair, to improve the comfort of user when using chair and make that user's line of sight can be kept level when leaning back on chair, so as to support leaning back office.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of chair, the chair includes:

[0006] Base;

[0007] Backrest support, rotatably connected with the base and used for connecting backrest;

[0008] Sliding member, slidably arranged on the backrest support;

[0009] Headrest, arranged on the sliding member;

[0010] Wherein, when the backrest support rotates, the sliding member slides on the backrest support to drive the headrest to move.

[0011] In some embodiments, the backrest support is provided with sliding cavity extending along its longitudinal direction, and the sliding member is inserted into the sliding cavity and slidably matched with the sliding cavity.

[0012] In some embodiments, at least one of the backrest support and the sliding member is provided with sliding structure, and the sliding structure is used to support the sliding member to slide along the sliding cavity.

[0013] In some embodiments, the backrest support is provided with the sliding structure, and the sliding structure comprises at least one support rotatably protruding from the inner wall of the sliding cavity and forming rolling contact with the sliding member.

[0014] In some embodiments, the outer wall of the sliding member is configured with a sliding groove extending along the longitudinal direction thereof, and the support is accommodated in the sliding groove and forms rolling contact with the groove bottom wall of the sliding groove.

[0015] In some embodiments, one of the outer wall of the sliding member and the inner wall of the sliding cavity is provided with a guide column, and the other is provided with a guide groove, the guide column is inserted into the guide groove and slidingly fitted with the guide groove to guide the sliding member to slide along the sliding cavity.

[0016] In some embodiments, the sliding member is sleeved on the backrest support and slidingly fitted with the backrest support.

[0017] In some embodiments, the backrest support is provided with an arc-shaped sliding rail, and the sliding member is slidingly fitted with the arc-shaped sliding rail to drive the headrest to move along an arc trajectory.

[0018] In some embodiments, the headrest is rotatably arranged.

[0019] In some embodiments, the seat further comprises:

[0020] a driving member connected with the headrest;

[0021] wherein, when the backrest support rotates, the driving member drives the headrest to rotate.

[0022] In some embodiments, the seat further comprises:

[0023] a backrest connected with the sliding member;

[0024] wherein, when the backrest support rotates, the backrest rotates with the backrest support and drives the sliding member to slide on the backrest support.

[0025] In some embodiments, the sliding member is provided with a backrest connecting portion, and the sliding member is hingedly connected with the backrest through the backrest connecting portion.

[0026] In some embodiments, further comprising:

[0027] a rotating member spaced apart from the sliding member along the longitudinal direction of the seat, one end of the rotating member being rotatably connected with the backrest support, and the other end being drivingly connected with the backrest.

[0028] In some embodiments, the seat further comprises:

[0029] a transmission structure connected with the sliding member, the transmission structure being further connected with the seat cushion of the base or seat;

[0030] Wherein, when the backrest support rotates, the transmission structure drives the sliding member to slide on the backrest support.

[0031] In some embodiments, the transmission structure comprises a connecting rod structure, one end of the connecting rod structure being hingedly connected with the sliding member, the other end of the connecting rod structure being connected with the seat cushion of the base or seat; and / or,

[0032] The transmission structure comprises a connecting rope, one end of the connecting rope being connected with the sliding member, the other end of the connecting rope being connected with the seat cushion of the base or seat.

[0033] In some embodiments, the backrest support comprises a backrest supporting part and a base connecting part, the backrest supporting part being used to support a backrest, the base connecting part being rotatably connected with the base;

[0034] Wherein, the sliding member is slidably arranged on the backrest supporting part.

[0035] The chair according to the present application is provided with the sliding member, so that the headrest can slide on the backrest support and move with the rotation of the backrest support. When a user sits on the chair and leans back on the backrest, the backrest and the backrest support will rotate relative to the base. At this time, the sliding member slides on the backrest support (for example, slides downward) to drive the headrest to move (for example, slides downward). The headrest always follows the user's head and / or neck, giving the user's head and / or neck sufficient support, which helps to improve the comfort of the user using the chair. In addition, the support angle of the headrest for the user's head and / or neck is basically unchanged, so that the user's line of sight is always kept level, thereby supporting the reclining office work. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 FIG. 1 is a structural schematic view of a chair according to an embodiment of the present application;

[0037] Figure 2 FIG. 2 is a structural schematic view of a part of the chair according to the embodiment of the present application; Figure 1

[0038] FIG. 3 is a structural schematic view of a backrest support of the chair according to the embodiment of the present application; Figure 3 Figure 1 FIG. 4 is a structural schematic view of a sliding member of the chair according to the embodiment of the present application;

[0039] Figure 4 Figure 1 FIG. 5 is a structural schematic view of a part of the chair according to another embodiment of the present application;

[0040] Figure 5 ​​Part structure schematic view of the seat chair in another embodiment of the utility model;

[0041] Figure 6 Structure schematic view of the seat chair in still another embodiment of the utility model. DETAILED DESCRIPTION

[0042] The scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0044] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have a middle element.

[0045] In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0046] The seat chair is a seat for people to work, study or rest, and its technology is developing towards more humanization and more intelligence, striving to provide comfortable and healthy sitting experience for users.

[0047] The utility model embodiment provides a seat, referring to Figure 1 The seat chair comprises:

[0048] A base 100;

[0049] A backrest support 200 rotatably connected with the base 100 and used for connecting a backrest 500;

[0050] The sliding member 300 is slidably arranged on the backrest support 200.

[0051] The headrest 400 is arranged on the sliding member 300.

[0052] When the backrest support 200 rotates, the sliding member 300 slides on the backrest support 200 to drive the headrest 400 to move.

[0053] In the embodiment, the base 100 (also referred to as a chassis) serves as the basis of the entire seat structure, bears the weight of the human body and various pressures that may be generated during use, and has sufficient strength and stability. Moreover, the base 100 is a key part of connecting the seat body (such as the backrest, the cushion, etc.), which combines various components together through a specific connection mode (such as fixed connection, rotary connection, etc.) to form a complete seat structure.

[0054] The backrest support 200 can be arranged at the rear side of the base 100 and used to cooperate with the backrest 500 to provide support for the back and / or waist of the human body. The backrest support 200 has a generally rod-shaped outer structure and is arranged in the longitudinal direction of the seat. The shape of the backrest support 200 can be various, such as arc-shaped, S-shaped, L-shaped, etc., and can be set according to actual structural requirements. To ensure sufficient support strength, the backrest support 200 can be made of metal (such as steel, aluminum alloy, etc.), plastic, etc. The backrest support 200 can be a component of the backrest 500, such as being arranged through the backrest 500 or being integrated with the backrest 500. Alternatively, the backrest support 200 can be connected with the backrest 500 to support the backrest 500, such as being arranged at the front side of the backrest 500 with reference to the front-rear and left-right directions of the seat. Moreover, when the backrest support 200 is assembled with the base 100, the lower part of the backrest support 200 is rotatably connected with the base 100. When a user sits on the seat, the back and / or waist can be leaned against the backrest 500, and the backrest support 200 provides support for the back and / or waist. When the user switches from sitting to reclining, the backrest support 200 can rotate to adapt to the sitting posture of the user. In the embodiment, the backrest support 200 can also be referred to as a chair back support, a linkage support, etc., and the naming is not limited.

[0055] The sliding member 300 is mounted on the backrest support 200 and can slide on the backrest support 200. Specifically, the sliding member 300 can adopt a structure form such as a slide rod, a slide cylinder, a slide seat, a slide carriage, etc. to slide with the backrest support 200, so as to be slidably arranged on the backrest support 200. On the backrest support 200, the sliding member 300 can be arranged at the upper part of the backrest support 200 to correspond to the upper half of the backrest 500 (which can also be regarded as the part of the backrest 500 for supporting the back of the human body). The function of the sliding member 300 includes supporting the sliding of other components of the seat (such as the headrest 400, etc.).

[0056] The headrest 400 is used to provide support for the head and / or neck of the human body. Its structural components can include a headrest framework, a headrest inner pad, and a headrest face cover, etc. The headrest framework can be supported by metal or high-strength plastic to provide support and structural stability for the headrest 400. The headrest inner pad can be made of soft foam material such as polyurethane foam to provide comfortable head support and cushioning. The headrest face cover is used to cover the headrest framework and the inner pad and can be made of fabric, leather, or other comfortable materials to provide a comfortable touch and an aesthetic appearance. In addition, the headrest 400 can also include adjustment devices such as height adjustment, angle adjustment, etc. to meet the seating needs of different passengers. When the human body sits on the seat, the head and / or neck can lean back on the headrest 400, and the headrest 400 provides support for the head and / or neck.

[0057] The headrest 400 is arranged on the sliding member 300, and when the backrest support 200 rotates, the sliding member 300 slides on the backrest support 200 to drive the headrest 400 to move. The backrest support 200, the sliding member 300, and the headrest 400 have a mutual action mechanism. When the backrest support 200 is rotated by an external force, the sliding member 300 not only rotates with the backrest support 200 but also slides on the backrest support 200 to drive the headrest 400 to move.

[0058] The sliding member 300 can slide on the backrest support 200 with the rotation of the backrest support 200. Specifically, the user can lean on the headrest 400, apply force to the headrest 400, and transmit the force to the sliding member 300 and the backrest support, so as to make the backrest support 200 rotate backward and at the same time make the sliding member 300 slide on the backrest support 200 to drive the headrest 400 to move.

[0059] Alternatively, the sliding member 300 is connected with the backrest 500, and a user leans against the backrest 500, and when the user leans back, an acting force applied to the backrest 500 is increased, the acting force applied to the backrest 500 is simultaneously applied to the sliding member 300 and the backrest support 200, so that the backrest support 200 is correspondingly rotated, and the sliding member 300 is simultaneously slid on the backrest support 200, thereby driving the headrest 400 to move. Alternatively, a transmission structure can be arranged based on the sliding member 300, and the transmission structure is connected between the sliding member 300 and the base 100 or the seat cushion 700. When the backrest support 200 is rotated rearward, the transmission structure drives the sliding member 300 to move, specifically, the sliding member 300 is pulled, so that the sliding member 300 is slid on the backrest support 200, thereby driving the headrest 400 to move.

[0060] Further, the seat further comprises a driving mechanism, and the driving mechanism comprises the following parts:

[0061] a detection structure, for monitoring the rotation state of the backrest support 200, for example, an angle sensor, an encoder, etc.;

[0062] a driving structure, for providing driving power according to the detection data of the detection structure, for example, a motor, etc.;

[0063] a transmission structure, for transmitting the driving power of the driving structure to the sliding member 300, so that the sliding member 300 slides, for example, a gear and a rack, a chain, a belt, etc.

[0064] The seat of the embodiment is provided with the sliding member 300, so that the headrest 400 can slide on the backrest support 200 and can move with the rotation of the backrest support 200. When a user sits on the seat and leans back on the backrest 500, the backrest 500 and the backrest support 200 are rotated relative to the base 100, at this time, the sliding member 300 slides on the backrest support 200 (for example, slides downward) to drive the headrest 400 to move (for example, slides downward), the headrest 400 always follows the head and / or neck of the user, provides sufficient support for the head and / or neck of the user, and helps to improve the comfort of the user using the seat; and the support angle of the headrest 400 for the head and / or neck of the user is basically unchanged, so that the line of sight of the user is always kept horizontal, thereby supporting the user to work while leaning back.

[0065] Further, when the user changes from leaning back to sitting straight, the backrest 500 and the backrest support 200 are rotated relative to the base 100 (the backrest support 200 can be connected with a reset member, and the backrest support 200 can be rotated under the action of the reset member to reset), at this time, the sliding member 300 slides on the backrest support 200 (for example, slides upward) to drive the headrest 400 to move (for example, slides upward), the headrest 400 always follows the head and / or neck of the user, provides sufficient support for the head and / or neck of the user.

[0066] That is, no matter whether the user leans back or converts from leaning back to sitting straight on the seat, the headrest 400 will slide on the backrest support 200 through the slider 300 to correspondingly adjust the position and / or angle, always follow the user's head and / or neck to give support, and make the user's line of sight always keep level.

[0067] In some embodiments, referring to Figure 2 and Figure 3 , the backrest support 200 is provided with a sliding cavity Q extending along the longitudinal direction thereof, and the slider 300 is inserted into the sliding cavity Q and in sliding cooperation with the sliding cavity Q.

[0068] The sliding cavity Q provided on the backrest support 200 is adapted to the slider 300, and the slider 300 is slidably arranged on the backrest support 200 by being inserted into the sliding cavity Q. The slider 300 can be a sliding rod. Alternatively, as shown in Figure 3 , the sliding cavity Q is located at the upper portion of the backrest support 200, and the top end of the backrest support 200 is configured with a cavity opening Qk in communication with the sliding cavity Q, which is adapted to the outer contour of the slider 300, and the slider 300 is inserted into the sliding cavity Q through the cavity opening Qk. The extension length of the sliding cavity Q is not limited and can be set according to actual conditions.

[0069] When the backrest support 200 rotates, the slider 300 correspondingly slides along the sliding cavity Q. For example, when the user sits on the seat, if the user leans back, the backrest support 200 will rotate rearward on the base 100, at which time the slider 300 slides downward along the sliding cavity Q of the backrest support 200 (the slider 300 continuously retracts into the sliding cavity Q at the cavity opening Qk) to drive the headrest 400 to move downward to adjust the position and / or angle of the headrest 400; or, when the user converts from leaning back to sitting straight, the backrest support 200 rotates forward on the base 100, at which time the slider 300 slides upward along the sliding cavity Q of the backrest support 200 (the slider 300 continuously extends out of the sliding cavity Q at the cavity opening Qk) to drive the headrest 400 to move upward to adjust the position and / or angle of the headrest 400.

[0070] The slider 300 is slidably arranged on the backrest support 200 by being inserted into the sliding cavity Q formed by the backrest support 200, and does not occupy additional thickness space in the front-rear direction of the seat and does not occupy additional width space in the left-right direction of the seat.

[0071] In some embodiments, at least one of the backrest support 200 and the slider 300 is provided with a sliding structure for supporting the slider 300 to slide along the sliding cavity Q.

[0072] The sliding member 300 is supported by the sliding structure to slide along the sliding cavity Q. The sliding structure can be arranged on the backrest support 200, or arranged on the sliding member 300, or arranged on both the backrest support 200 and the sliding member 300.

[0073] The sliding structure can have various forms, for example, the sliding structure can include a sliding groove, and the sliding member 300 is partially accommodated in the sliding groove and supported by the sliding groove to slide. This is only an example and is not limited. In specific applications, when either the backrest support 200 or the sliding member 300 is provided with a sliding structure, the sliding structure can have one form but is not limited to one form.

[0074] Under the support of the sliding structure, the sliding member 300 can slide smoothly along the sliding cavity Q, which is conducive to improving the operation stability of the headrest 400 sliding system.

[0075] In some embodiments, referring to Figure 3 When the backrest support 200 is provided with a sliding structure, the sliding structure includes at least one support member 10, and the at least one support member 10 is rotatably protruded on the inner wall of the sliding cavity Q and forms rolling contact with the sliding member 300.

[0076] The sliding structure uses the support member 10, which is rotatably mounted on the backrest support 200 and arranged in contact with the inner wall of the sliding cavity Q and the sliding member 300. The support member 10 is provided with at least one, that is, the support member 10 can be provided with one or more than one, such as two or three. When the support member 10 is provided with more than one, the more than one support member 10 can be arranged in a circumferential direction, a transverse direction or a longitudinal direction of the backrest support 200. Optionally, the support member 10 can include a support wheel connected with a mounting shaft, and the inner wall of the sliding cavity Q is configured with a mounting groove, and the support wheel is at least partially accommodated in the mounting groove and rotatably arranged on the inner wall of the sliding cavity Q through the mounting shaft.

[0077] When the sliding member 300 slides along the sliding cavity Q, the support member 10 in contact with the sliding member 300 rotates correspondingly (from the perspective of the sliding member 300 as a stationary reference system, the support member 10 rolls along the surface of the sliding member 300), to support the sliding member 300 to slide along the sliding cavity Q. The rolling of the support member 10 on the backrest support 200 can greatly reduce the frictional resistance between the support member 10 and the sliding member 300, so that the sliding member 300 can slide more easily and the sliding process is more smooth.

[0078] Correspondingly, as an optional embodiment, the sliding structure of the sliding member 300 can also include at least one support 10, which is protrudingly arranged on the outer wall of the sliding member 300 in a rotatable manner and forms rolling contact with the backrest support 200. The corresponding structure arrangement, working principle and role played can refer to the above-mentioned embodiments, which will not be repeated here.

[0079] In some embodiments, referring to Figure 4 , the outer wall of the sliding member 300 is configured with a sliding groove 20 extending along the longitudinal direction thereof, and the support 10 is accommodated in the sliding groove 20 and forms rolling contact with the groove bottom wall of the sliding groove 20. Wherein, the number of the sliding grooves 20 can be the same as or different from the number of the supports 10. For example, the support 10 is provided with more than one, and the more than one supports 10 are arranged in a circumferential or transverse direction of the backrest support 200, and the sliding groove 20 is correspondingly provided with more than one, and each support 10 is correspondingly accommodated in one sliding groove 20. For another example, the support 10 is provided with more than one, and the more than one supports 10 are arranged in a longitudinal direction of the backrest support 200, and the sliding groove 20 can be provided with only one, and the more than one supports 10 are accommodated in the sliding groove 20. This is only exemplary and not restrictive.

[0080] When the sliding member 300 slides along the sliding cavity Q, the support 10 in contact with the groove bottom wall of the sliding groove 20 rotates in the sliding groove 20 (from the perspective of the sliding member 300 as a stationary reference system, the support 10 rolls along the groove bottom wall of the sliding groove 20) to support the sliding member 300 to slide along the sliding cavity Q. Wherein, the sliding groove 20 provides a clear movement track for the support 10, ensuring the support 10 to move along a predetermined direction, realizing precise guidance for the sliding of the sliding member 300.

[0081] In some embodiments, referring to Figure 3 and Figure 4 , one of the outer wall of the sliding member 300 and the inner wall of the sliding cavity Q is provided with a guide column 30, and the other is provided with a guide groove 40, and the guide column 30 is inserted into the guide groove 40 and slidably matched with the guide groove 40 to guide the sliding member 300 to slide along the sliding cavity Q.

[0082] In this embodiment, the outer wall of the sliding member 300 can be provided with a guide column 30, and the inner wall of the sliding cavity Q is provided with a guide groove 40 to slide with the guide column 30; or the inner wall of the sliding cavity Q is provided with a guide column 30, and the outer wall of the sliding member 300 is provided with a guide groove 40 to slide with the guide column 30. Among them, the guide structure of the guide column 30 and the guide groove 40 can be provided with one group or more than one group, and when more than one group of guide structures are provided, more than one group of guide structures can be arranged in the circumferential direction or the transverse direction of the back support 200. The sliding member 300 is guided to slide in a predetermined direction by the cooperation of the guide column 30 and the guide groove 40 when sliding along the sliding cavity Q. Specifically, when the sliding member 300 slides along the sliding cavity Q, the guide column 30 slides in the guide groove 40 to accurately guide the sliding direction of the sliding member 300.

[0083] In addition to the structure of the back support 200 provided with the sliding cavity Q described above, the structure of the sliding member 300 slidably arranged on the back support 200 can also adopt other forms, such as:

[0084] In some embodiments, the sliding member 300 is sleeved on the back support 200 and forms a sliding fit with the back support 200. The sliding member 300 is configured with a sliding hole matched with the outer contour of the back support 200, the back support 200 passes through the sliding hole of the sliding member 300, and the sliding member 300 is sleeved on the back support 200 through the sliding hole and forms a sliding fit with the back support 200. When the back support 200 rotates, the sliding member 300 slides on the back support 200 correspondingly.

[0085] In some embodiments, referring to Figure 5 , the back support 200 is provided with an arc-shaped sliding rail 50, and the sliding member 300 is in sliding fit with the arc-shaped sliding rail 50, which can drive the headrest 400 to move along an arc trajectory. Among them, the notch of the arc-shaped sliding rail 50 faces the front side direction of the back support 200.

[0086] When the user sits on the seat and leans back, the back support 200 will rotate backward relative to the base 100, at this time the sliding member 300 slides along the arc-shaped sliding rail 50 of the back support 200, correspondingly drives the headrest 400 to slide downward along the arc-shaped rail relative to the back support 200, to adjust the position and / or angle of the headrest 400, the headrest 400 follows the user's head and / or neck and gives sufficient support, and the user's line of sight is always kept level, to support the reclining office work.

[0087] When the user converts from leaning back to sitting straight, the backrest support 200 rotates forward relative to the base 100, at which time the sliding member 300 slides along the arc-shaped sliding rail 50 of the backrest support 200, correspondingly driving the headrest 400 to slide upward along the arc-shaped track relative to the backrest support 200 to adjust the position and / or angle of the headrest 400, the headrest 400 following the head and / or neck of the user and giving sufficient support.

[0088] In some embodiments, with reference to Figure 1 , the headrest 400 is rotatably arranged. Specifically, the headrest 400 can be configured with a headrest support 410, the headrest 400 is rotatably connected with the headrest support 410, and the headrest 400 is installed on the sliding member 300 through the headrest support 410. The rotatable arrangement of the headrest 400 allows the user to rotate the headrest 400 to adjust the support angle and / or position of the headrest 400. In a specific use scenario, the rotatable arrangement of the headrest 400 helps to further improve the comfort of the user sitting on the seat. For example, when the user leans back on the seat, the backrest support 200 rotates relative to the base 100, and the headrest 400 adjusts the position and / or angle under the action of the sliding member 300, and at the same time, the headrest 400 can also rotate relative to the backrest to adapt to the position of the user's head and / or neck, so that the user's line of sight is more accurate to the eye level.

[0089] Specifically, the headrest 400 can be rotatable based on the position of the user's head and / or neck, for example:

[0090] When the user sits on the seat and leans back on the headrest 400, if the user's head and / or neck moves, the headrest 400 can rotate with the movement of the user's head and / or neck to adapt to the change of the angle of the user's head and / or neck. Specifically, the following use scenario can be included: when the user's head and / or neck leans back on the headrest 400 to lean back, the headrest 400 rotates accordingly to keep the user's line of sight always level.

[0091] The rotation of the headrest 400 can also be manually controlled, for example:

[0092] The user sitting on the seat can manually rotate the headrest 400 to adjust the position and / or angle of the headrest 400, so that the headrest 400 supports its own head and / or neck.

[0093] In addition, the rotation of the headrest 400 can also be electrically controlled, for example:

[0094] In some embodiments, the seat further comprises:

[0095] a driving member connected with the headrest 400;

[0096] The driving member drives the headrest 400 to rotate when the backrest support 200 rotates. That is, the headrest 400 is in linkage with the backrest support 200 through the driving member, and the three have a mutual cooperation mechanism. The driving member drives the headrest 400 to rotate according to the rotation of the backrest support 200. The driving member can include a motor, and the output shaft of the motor is in transmission connection with the rotating shaft of the headrest 400. The motor drives the headrest 400 to rotate. Alternatively, the driving member is arranged on the sliding member 300.

[0097] The backrest support 200 can be provided with a detection structure (such as an angle sensor, an encoder, etc.) to monitor the rotation state of the backrest support 200. The driving member provides driving power to the headrest 400 according to the detection data of the detection structure, so that the headrest 400 rotates.

[0098] Specifically, the following use scenarios can be included: when the user leans back on the seat, the backrest support 200 rotates relative to the base 100, and the driving member drives the headrest 400 to rotate so that the user's line of sight always remains level.

[0099] In some embodiments, referring to Figure 1 The seat further comprises:

[0100] The backrest 500 is connected with the sliding member 300.

[0101] When the backrest support 200 rotates, the backrest 500 rotates with the backrest support 200 and drives the sliding member 300 to slide on the backrest support 200.

[0102] The backrest support 200 is indirectly connected with the backrest 500 through the sliding member 300, and forms a support for the backrest 500. Since the sliding member 300 is slidably arranged on the backrest support 200, and the backrest 500 is connected with the sliding member 300, the backrest 500 can slide relative to the backrest support 200 through the sliding member 300. Alternatively, from another aspect, the sliding member 300 not only supports the sliding of the headrest 400, but also supports the sliding of the backrest 500.

[0103] When the user sits on the seat and leans back on the backrest 500 and leans back, the force applied to the backrest 500 increases, and the force acting on the backrest 500 simultaneously acts on the sliding piece 300 and the backrest support 200, so that the backrest support 200 rotates accordingly, and at the same time, the sliding piece 300 slides on the backrest support 200 (for example, slides downward), thereby driving the headrest 400 to move (for example, slides downward), and at the same time, driving the backrest 500 to move, so as to simultaneously adjust the angle and / or position of the headrest 400 and the backrest 500. In addition to the headrest 400 following the user's head and / or neck, the backrest 500 also always follows the user's back and / or waist, giving the user's back and / or waist sufficient support, which can further improve the user's comfort when using the seat.

[0104] In some embodiments, referring to Figure 1 , Figure 2 and Figure 4 , the sliding piece 300 is provided with a backrest connecting portion 310, and the sliding piece 300 is hinged to the backrest 500 through the backrest connecting portion 310. Optionally, the backrest connecting portion 310 of the sliding piece 300 is provided with a connecting shaft, and the backrest 500 is directly or indirectly (i.e., through other intermediate members) connected to the connecting shaft to realize the hinging with the sliding piece 300.

[0105] The backrest 500 is hinged to the sliding piece 300, so that the backrest 500 can rotate relative to the sliding piece 300. When the user leans on the backrest 500 and leans back, because the hinged connection allows the backrest to rotate relative to the backrest support 200 within a certain range, the backrest 500 will rotate relative to the backrest support 200 under the action of the human body, and follow the change of the human body posture, adapt to the human body curve (back curve and / or waist curve) of the user, thereby adapting to the different sitting posture changes of the user.

[0106] In an embodiment, referring to Figure 1 and Figure 2 , the seat further comprises:

[0107] The rotating piece 900 is arranged in the longitudinal direction of the seat and spaced apart from the sliding piece 300, one end of the rotating piece 900 is rotationally connected to the backrest support 200, and the other end is drivingly connected to the backrest 500.

[0108] The rotating member 900 is installed on the backrest support 200 and can rotate on the backrest support 200. Specifically, the rotating member 900 can adopt a structure such as a rotating rod or a rotating frame to be rotatably connected with the backrest support 200, so as to be rotatably arranged on the backrest support 200. On the backrest support 200, the rotating member 900 can be arranged at the lower part of the backrest support 200 to correspond to the lower half of the backrest 500 (which can also be regarded as the part of the backrest 500 for supporting the waist of a human body). The backrest 500 and the rotating member 900 are in a transmission connection relationship. Through the rotating member 900, the backrest 500 can rotate relative to the backrest support 200, and the rotating member 900 supports the rotation of the backrest 500 on the backrest support 200.

[0109] The power source for the rotation of the rotating member 900 can be as follows:

[0110] When the user leans back against the backrest 500, the force applied to the backrest 500 increases, and the force applied to the backrest 500 simultaneously acts on the rotating member 900 and the backrest support 200, so that the backrest support 200 is correspondingly rotated rearward, and at the same time, the rotating member 900 is rotated on the backrest support 200, thereby supporting the rotation of the backrest 500 relative to the backrest support 200.

[0111] That is, when the backrest support 200 rotates relative to the base 100, the backrest 500 rotates on the backrest support 200 through the rotating member 900.

[0112] In the embodiment, when the user sits on the seat and leans back against the backrest 500 and leans back, the backrest 500 and the backrest support 200 are rotated relative to the base 100, and at the same time, the rotating member 900 is rotated (for example, downward) on the backrest support 200 to drive the backrest 500 (for example, to rotate downward) to adjust the position and / or angle of the backrest 500, so that the backrest 500 supports the part (such as the waist) of the user, adapts to the change of the posture of the user, and improves the comfort of the user using the seat.

[0113] In some embodiments, referring to Figure 1 , the seat further comprises:

[0114] The transmission structure 600 is connected with the sliding member 300, and the transmission structure 600 is also in transmission connection with the base 100 or the seat cushion 700.

[0115] When the backrest support 200 rotates, the transmission structure 600 drives the sliding member 300 on the backrest support 200 to slide.

[0116] The transmission structure 600 is arranged to slide the sliding member 300 on the backrest support 200 when the backrest support 200 rotates.

[0117] The transmission structure 600 can be in transmission connection with the base 100, or can also be in transmission connection with the seat cushion 700 of the seat. The transmission principle of the transmission structure 600 can be that, due to the change in the relative angle / position between the backrest support 200 and the slide 300 on the backrest support 200 and the base 100 and the seat cushion 700 of the seat when the backrest support 200 rotates, the transmission structure 600 between the base 100 or the seat cushion 700 of the seat and the slide 300 correspondingly pulls the slide 300, so as to make the slide 300 slide on the backrest support 200. The transmission connection involved can include hinged connection, rotary connection, sliding connection, etc., which is not limited in the embodiment. Among them, as an optional implementation manner, the base 100 or the seat cushion 700 of the seat is provided with a framework 800 (or a seat cushion framework, a base framework, a linkage framework, etc.), and the transmission structure 600 is in transmission connection with the framework 800 to be connected with the base 100 or the seat cushion 700 of the seat.

[0118] In the embodiment, when the backrest support 200 rotates, the slide 300 can slide on the backrest support 200 through the transmission action of the transmission structure 600 on the slide 300.

[0119] Among them, the structure form of the transmission structure 600 can adopt various forms, such as:

[0120] In some embodiments, referring to Figure 1 and Figure 2 , the transmission structure 600 includes a connecting rod structure 610, one end of the connecting rod structure 610 is hinged with the slide 300, and the other end of the connecting rod structure 610 is in transmission connection with the base 100 or the seat cushion 700 of the seat.

[0121] The transmission structure 600 adopts the connecting rod structure 610, in which the connecting rod can be one or more than one, and the number of connecting rods is not limited. As an example, as shown in Figure 1 and Figure 2 , two connecting rods are provided, which are a first connecting rod 611 and a second connecting rod 612, a hinged connection relationship is directly or indirectly formed between the first connecting rod 611 and the second connecting rod 612, one end of the first connecting rod 611 away from the second connecting rod 612 is hinged with the slide 300, and one end of the second connecting rod 612 away from the first connecting rod 611 is in transmission connection (such as hinged connection) with the base 100 or the seat cushion 700 of the seat. Further, in combination with the rotating member 900 provided in the foregoing embodiment, the first connecting rod 611 and the second connecting rod 612 are respectively hinged with the support member 900, so that a hinged connection relationship is formed between the first connecting rod 611 and the second connecting rod 612.

[0122] When the backrest support 200 rotates backward, the relative angle / position between the backrest support 200 and the base 100 or the seat cushion 700 changes, so that the connecting rod structure 610 moves correspondingly to transmit force to the sliding member 300, thereby pulling the sliding member 300 to slide downward on the backrest support 200 relative to the backrest support 200; when the backrest support 200 rotates forward, the connecting rod structure 610 resets correspondingly to drive the sliding member 300 to slide upward on the backrest support 200.

[0123] In some embodiments, the transmission structure 600 includes a connecting rope 620, one end of the connecting rope 620 being connected with the sliding member 300, and the other end of the connecting rope 620 being in transmission connection with the base 100 or the seat cushion 700. Figure 6

[0124] The transmission structure 600 adopts the connecting rope 620, which can be arranged along the backrest support 200, the backrest support 200 being provided with a guide structure, the guide structure being configured with a guide channel, the connecting rope 620 passing through the guide channel of the guide structure, and the two ends of the connecting rope 620 being connected with the sliding member 300 and the base 100 or the seat cushion 700, respectively.

[0125] When the backrest support 200 rotates backward, the relative angle / position between the backrest support 200 and the base 100 or the seat cushion 700 changes, the connecting rope 620 gradually pulls the sliding member 300 to slide downward on the backrest support 200 relative to the backrest support 200 from an initial position; when the backrest support 200 rotates forward, the sliding member 300 slides upward on the backrest support 200 relative to the backrest support 200 to reset to the initial position.

[0126] In some embodiments, the backrest support 200 includes a backrest support portion 210 and a base connecting portion 220, the backrest support portion 210 being used to support a backrest, and the base connecting portion 220 being in rotatable connection with the base 100. Figures 1 to 3 The sliding member 300 is slidably arranged on the backrest support portion 210.

[0127]

[0128] ​​The backrest support 200 is composed of a backrest support part 210 and a base connecting part 220, and the backrest support part 210 and the base connecting part 220 can be arranged at an angle, which can be a right angle or an obtuse angle. In addition, the backrest support part 210 and the base connecting part 220 can be integrally formed or detachably connected. The backrest support 200 supports the backrest 500 through the backrest support part 210, and is rotatably connected to the base 100 through the base connecting part 220. The rotatable connection between the backrest support 200 and the base 100 can be that the base connecting part 220 of the backrest support 200 is arranged through the hinge shaft Jz in the base 100 to achieve rotatable connection with the base 100. Further, the base connecting part 220 of the backrest support 200 can be fixedly connected with a rotating member J, which is sleeved on the hinge shaft Jz to form a rotatable connection with the base 100. Of course, this is only an example and is not limiting.

[0129] Based on the setting position of the headrest 400, the sliding member 300 is installed on the backrest support 200 and is correspondingly slidably arranged on the backrest support part 210.

[0130] The above is only part or preferred embodiments of the present application, neither the text nor the drawings can limit the scope of protection of the present application, any equivalent structural transformation based on the concept of the present application as a whole, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. A seat, characterized in that, The base is provided with a backrest support connected rotatably therewith and used for connecting a backrest, a sliding member slidably arranged on the backrest support, a headrest arranged on the sliding member, and wherein when the backrest support is rotated, the sliding member slides on the backrest support to drive the headrest to move. The transmission structure is further connected with the base or the seat cushion. The transmission structure includes a connecting rod structure, one end of the connecting rod structure being hingedly connected with the sliding member, and the other end of the connecting rod structure being connected with the base or the seat cushion. The transmission structure includes a connecting rope, one end of the connecting rope being connected with the sliding member, and the other end of the connecting rope being connected with the base or the seat cushion. The backrest support is provided with a sliding cavity extending along the longitudinal direction of the backrest support, and the sliding member is inserted into the sliding cavity and slidably connected with the sliding cavity. At least one of the backrest support and the sliding member is provided with a sliding structure used for supporting the sliding member to slide along the sliding cavity. When the sliding structure is arranged on the backrest support, the sliding structure includes at least one support rotatably protruding from the inner wall of the sliding cavity and forming rolling contact with the sliding member. The outer wall of the sliding member is provided with a sliding groove extending along the longitudinal direction of the sliding member, and the support is accommodated in the sliding groove and forms rolling contact with the groove bottom wall of the sliding groove. One of the outer wall of the sliding member and the inner wall of the sliding cavity is provided with a guide column, and the other is provided with a guide groove, the guide column being inserted into the guide groove and slidably connected with the guide groove to guide the sliding member to slide along the sliding cavity. The sliding member is sleeved on the backrest support and slidably connected with the backrest support. The backrest support is provided with an arc-shaped sliding rail, and the sliding member is slidably connected with the arc-shaped sliding rail to drive the headrest to move along an arc trajectory.

2. The seat of claim 1, wherein The headrest is rotatably arranged.

3. The seat of claim 2, wherein The driving member is connected with the headrest.

4. The seat of claim 3, wherein When the backrest support is rotated, the driving member drives the headrest to rotate.

5. The seat of claim 4, wherein, The backrest is connected with the sliding member.

6. The seat of claim 2, wherein, When the backrest support is rotated, the backrest rotates with the backrest support and drives the sliding member to slide on the backrest support.

7. The seat of claim 1, wherein The sliding member is hingedly connected with the backrest through a backrest connecting portion.

8. The seat of claim 1, wherein, The rotating member is arranged along the longitudinal direction of the seat and is spaced apart from the sliding member, one end of the rotating member being rotatably connected with the backrest support, and the other end of the rotating member being connected with the backrest in transmission.

9. The seat of any one of claims 1 to 8, wherein, The backrest support includes a backrest supporting portion used for supporting a backrest and a base connecting portion rotatably connected with the base.

10. The seat of claim 9, wherein, The sliding member is slidably arranged on the backrest supporting portion. ​ ​ 11. The seat of any one of claims 1 to 8, wherein, ​ ​ ​ 12. The seat of claim 11, wherein, ​ 13. The seat of claim 11, wherein, ​ ​ 14. The seat of any one of claims 1 to 8, wherein, ​ ​

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