CN217309601U - Chair frame and chair comprising same - Google Patents

Abstract

The utility model discloses a chair frame and contain its seat, chair frame includes: a base assembly and a back rest. The base component comprises a supporting base and a cushion frame, and the cushion frame is arranged on the supporting base; the backrest frame is rotatably arranged on the base assembly and can move away from and towards the cushion frame to adjust the included angle between the backrest frame and the cushion frame. The seat cushion frame is movably connected with the support base through a translation connecting mechanism, and the lower end of the backrest frame is connected with the seat cushion frame and can translate along with the seat cushion frame; when the backrest frame moves away from the cushion frame, the backrest frame can be linked with the cushion frame to horizontally extend towards the front side relative to the supporting base, and when the backrest frame moves close to the cushion frame, the backrest frame can be linked with the cushion frame to horizontally retract towards the rear side relative to the supporting base. According to the chair frame and the seat comprising the chair frame, when the included angle between the backrest frame and the seat cushion frame is adjusted, the change of the gravity center position of the crotch of a user is small.

Description

Chair frame and chair comprising same

Technical Field

The utility model relates to a daily life apparatus, in particular to a chair frame and a chair comprising the same.

Background

The prior seat mainly comprises a seat frame and a soft package arranged on the seat frame. The chair frame includes base subassembly and back frame, and the base subassembly is including supporting base and cushion frame, and the cushion frame is arranged in and is supported the base, and the back frame sets up in the base subassembly. In order to realize the switching between the sitting posture and the lying posture, the backrest frame is arranged in a rotating way and can move close to and far away from the cushion frame, so that the size of an included angle between the backrest frame and the cushion frame can be adjusted, and the switching between the sitting posture and the lying posture is realized. In order to facilitate the switching of the two postures, when the backrest frame moves, some chair frames can be linked with the telescopic action of the seat cushion frame, so that the chair frames can be opened or closed quickly. The chair frame has the following defects: the backrest frame and the seat cushion frame are usually opened and closed rapidly by arc-shaped track movement, and when the backrest frame and the seat cushion frame are opened and closed mutually, the backrest frame and the seat cushion frame can suddenly jack the crotch of a user and can be removed for supporting downwards, so that the change of the gravity center position of the crotch of a human body is large, and the comfort is influenced; if the seat is unable to smoothly transition between the two postures, it may even cause body imbalance due to sudden center of gravity change.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a chair frame, when the included angle between the backrest frame and the cushion frame is adjusted, the change of the gravity center position of the crotch of the user is smaller.

The utility model discloses still provide a seat that has above-mentioned chair frame.

According to the utility model discloses a chair frame of first aspect embodiment, it includes: the base component comprises a supporting base and a cushion frame, and the cushion frame is arranged on the supporting base; the backrest frame is rotatably arranged on the base assembly and can move away from and towards the cushion frame so as to adjust the size of an included angle between the backrest frame and the cushion frame; the cushion frame is movably connected with the support base through a translation connecting mechanism and can extend forwards and retract backwards relative to the support base, the translation connecting mechanism is configured to enable the cushion frame to translate along a linear direction relative to the support base, and the lower end of the backrest frame is connected with the cushion frame and can translate along with the cushion frame; the back frame deviates from can link when the cushion frame moves the cushion frame is relative support base translation ground and stretch out toward the front side, the back frame is close to can link when the cushion frame moves the cushion frame is relative support base translation ground is to the rear side indentation.

According to the utility model discloses a chair frame of first aspect embodiment has following beneficial effect at least: when the chair frame enters a lying posture state, the backrest frame moves away from the cushion frame, the backrest frame extends the linkage cushion frame forwards in a translation manner and simultaneously drives the lower end of the backrest frame to move forwards synchronously, so that the angle between the backrest frame and the cushion frame is opened quickly, and the cushion frame extends in a translation manner, so that the obvious sudden upward jacking cannot be formed on the crotch of a human body; when the sitting posture is recovered, the cushion frame is also retracted in a translational way to recover the position, so that the good support for the crotch can be kept. The chair frame can ensure that the gravity center of the crotch of the human body changes slightly when the sitting posture and the lying posture are changed, thereby having better comfort and reducing the probability of body unbalance caused by sudden large change of the gravity center of the crotch of the human body.

According to some embodiments of the utility model, the support base is provided with the connecting seat, the back frame rotate set up in the connecting seat can rotate around the predetermined axis that sets up along left right direction, the lower extreme of back frame is provided with and is used for the push-and-pull the drive division of cushion frame, the drive division with the cushion frame is connected.

According to the utility model discloses a some embodiments, the cushion frame is provided with the bar hole, the vertical setting in bar hole, the drive division configuration is for the universal driving shaft, the universal driving shaft is worn to locate the bar hole can remove in the bar hole, the universal driving shaft through with the lateral wall cooperation in bar hole is with the push-and-pull the cushion frame.

According to some embodiments of the present invention, the backrest frame is provided with a pivoting portion, the pivoting portion is pivotally connected to the connecting seat and the pivoting axis is arranged along the left-right direction.

According to some embodiments of the present invention, two connecting seats are provided and respectively provided corresponding to left and right sides of the backrest frame, and the left and right sides of the backrest frame are respectively rotatably provided to the corresponding connecting seats; the two driving parts are arranged and positioned on the left side and the right side of the backrest frame, and the two driving parts are respectively connected with the left side and the right side of the cushion frame.

According to some embodiments of the utility model, the translation coupling mechanism include the spout and with the movable block of spout adaptation, the movable block with one of the spout set up in the cushion frame, another set up in support the base, the spout is followed the length direction of cushion frame extends, the movable block activity set up in the spout.

According to some embodiments of the utility model, the cushion frame with it is used for the locking to support to be provided with between the base the cushion frame is relative support the locking means of the position of base, locking means is provided with and is used for control locking means carries out the unblock trigger part that unlocks, the base subassembly is provided with the unblock operating parts, the configuration of unblock operating parts can order about locking means gets into locking state or unblock state.

According to some embodiments of the present invention, the locking device is configured as a controllable gas spring, the controllable gas spring comprises a cylinder body and a telescopic rod, the cylinder body and one of the telescopic rods is connected with the cushion frame, the cylinder body and the other of the telescopic rods is connected with the support base.

According to some embodiments of the present invention, further comprising an elastic damping mechanism configured to: when the backrest frame moves away from the cushion frame, the backrest frame exerts resetting force.

According to a second aspect embodiment of the present invention, a seat includes a seat frame according to a first aspect embodiment of the present invention.

According to the utility model discloses a seat of second aspect embodiment has following beneficial effect at least: the seat using the seat frame has the advantage that when the included angle between the backrest frame and the seat cushion frame is adjusted, the change of the gravity center position of the crotch of a user is small.

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

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a front view of the embodiment of the present invention in a sitting position;

fig. 4 is a front view of the embodiment of the present invention in a lying position;

FIG. 5 is an enlarged schematic view taken at A of FIG. 1;

FIG. 6 is a partial block diagram of an embodiment of the present invention;

fig. 7 is an enlarged schematic view of fig. 1 at B.

Reference numerals:

the base assembly 100, the supporting base 110, the cushion frame 120, the connecting seat 111 and the strip-shaped hole 121;

a backrest frame 200, a driving part 210, a pivoting part 220;

the translational connecting mechanism 300, the sliding groove 310 and the moving block 320;

a locking device 400, an unlocking trigger part 401, a cylinder body 410 and an expansion link 420;

the unlocking operation member 500;

a toggle member 600.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, a chair frame includes a base assembly 100 and a back frame 200. The base assembly 100 includes a support base 110 and a seat cushion frame 120, the seat cushion frame 120 being disposed on the support base 110. The backrest frame 200 is rotatably disposed on the base assembly 100, and the backrest frame 200 can move away from and towards the cushion frame 120 to adjust an included angle between the backrest frame 200 and the cushion frame 120. The seat cushion frame 120 is movably connected to the support base 110 through the translation connecting mechanism 300 and can extend forward and retract backward relative to the support base 110, the translation connecting mechanism 300 is configured to enable the seat cushion frame 120 to translate along a linear direction relative to the support base 110, and the lower end of the backrest frame 200 is connected to the seat cushion frame 120 and can translate along with the seat cushion frame 120. It can be understood that the seat cushion frame 120 may extend forward, or may extend forward obliquely; the cushion frame 120 is retracted backward, and relative to the position when it is extended, it may be retracted forward (corresponding to the case where the cushion frame 120 is extended forward) or retracted obliquely backward (corresponding to the case where the cushion frame 120 is extended forward obliquely). In the embodiment shown in the drawings, the seat cushion frame 120 is configured to translate relative to the support base 110 in a linear direction indicated by a double-headed arrow D in fig. 3, which is also the longitudinal direction of the seat cushion frame 120, and which is also angled with respect to the forward and rearward directions, so that the seat cushion frame 120 extends and retracts diagonally forward and rearward. It will be appreciated that the cushion frame 120 can translate relative to the support base 110 in both forward and rearward directions, and then the cushion frame 120 will extend and retract in both forward and rearward directions.

Referring to fig. 4, when the backrest frame 200 moves away from the cushion frame 120, the backrest frame 120 is linked to move forward relative to the support base 110, and the lower end of the backrest frame 200 is driven to move forward, so that the angle between the backrest frame 200 and the cushion frame 120 is rapidly opened, and the chair frame enters a lying posture state. Correspondingly, when the backrest frame 200 moves close to the cushion frame 120, the backrest frame 120 can be linked to move in a translational way and retract to the rear side relative to the support base 110, so that the chair frame returns to the sitting posture as shown in fig. 3.

When the chair frame enters a lying posture state, the backrest frame 200 moves away from the cushion frame 120, the backrest frame 200 enables the linkage cushion frame 120 to extend out in a translation mode towards the front side, and simultaneously drives the lower end of the backrest frame 200 to move forwards synchronously, so that the angle between the backrest frame and the cushion frame is opened quickly, and because the cushion frame 120 extends out in a translation mode, obvious sudden upward jacking cannot be formed on the crotch of a human body; when the sitting position is restored, the seat cushion frame 120 is also retracted in a translational manner to restore the position, so that good support for the crotch can be maintained. The chair frame has the advantages that the change of the gravity center of the crotch of a human body is small when the sitting posture and the lying posture are changed, so that the comfort is better, and the probability of body unbalance caused by sudden large change of the gravity center of the crotch of the human body is reduced.

Referring to fig. 1 and 5, the support base 110 is provided with a connection seat 111, the back rest 200 is rotatably provided to the connection seat 111 and can rotate about a predetermined axis line provided in the left-right direction, a driving part 210 for pushing and pulling the cushion frame 120 is provided at a lower end of the back rest 200, and the driving part 210 is connected to the cushion frame 120. When the backrest frame 200 is rotated to adjust the position, the driving part 210 provided at the lower end of the backrest frame 200 can move forward and backward so as to push and pull the cushion frame 120. The structure is adopted to realize the linkage between the backrest frame 200 and the seat cushion frame 120, and the structure is simple and compact and is easy to implement. Of course, it is also conceivable that the linkage between the back frame 200 and the seat frame 120 is not limited to the above-described embodiment; there are many embodiments in the art (e.g., rack and pinion linkage, linkage of linkages, etc.) in which the members are moved synchronously by the linkage of the rotating members and the translating members, and those skilled in the art can configure the embodiments according to the actual situation.

Specifically, the backrest frame 200 is provided with a pivoting portion 220, the pivoting portion 220 is pivotally connected to the connecting base 111, and the pivoting axis is arranged along the left-right direction, so that the rotation arrangement relative to the connecting base 111 is realized. The pivoting portion 220 is a U-shaped member and is fixedly connected to the rod of the backrest frame 200. It is conceivable that the pivot portion 220 is not limited to a U-shaped member, and may be a rotating shaft. It is understood that there are many structures in the art for realizing the rotational arrangement of one member with respect to another member, and those skilled in the art can configure the arrangement according to actual situations.

Specifically, the cushion frame 120 is provided with a strip-shaped hole 121, the strip-shaped hole 121 is vertically arranged, the driving portion 210 is configured to be a linkage shaft, the linkage shaft penetrates through the strip-shaped hole 121 and can move in the strip-shaped hole 121, and the linkage shaft is matched with the side wall of the strip-shaped hole 121 to push and pull the cushion frame 120. When the backrest frame 200 rotates relative to the supporting base 110, the linkage shaft moves back and forth along an arc-shaped track, moves up and down in the strip-shaped hole 121 and is matched with the hole wall of the strip-shaped hole 121 in an abutting mode, and the cushion frame 120 is pushed and pulled. The backrest frame 200 is simple in structure and easy to implement, and the cushion frame 120 is in push-pull linkage. It is conceivable that the driving part 210 is not limited to the above-described implementation of the push-pull driving of the cushion frame 120, and the push-pull driving may be performed by a link mechanism, for example; there are many structures in the art for realizing that one member drives the other member in a push-pull manner, and those skilled in the art can configure the structure according to actual situations.

In the embodiment, two connecting seats 111 are provided and are respectively provided corresponding to the left and right sides of the back frame 200, and the left and right sides of the back frame 200 are respectively rotatably provided to the corresponding connecting seats 111, so that the rotation of the back frame 200 is more stable. In addition, in the embodiment, two driving parts 210 are provided and are located at the left and right sides of the back frame 200, and the two driving parts 210 are respectively connected with the left and right sides of the seat cushion frame 120, so that the linkage of the back frame 200 and the seat cushion frame 120 is more stable. It is conceivable that the number of the components is not limited to the above-described embodiments, and those skilled in the art can specifically configure the appropriate number of the components to implement the configuration as needed.

Referring to fig. 6, in an embodiment, the translational connection mechanism 300 includes a sliding groove 310 and a moving block 320 adapted to the sliding groove 310, the moving block 320 is disposed on the cushion frame 120, the sliding groove 310 is disposed on the support base 110, the sliding groove 310 extends along a length direction of the cushion frame 120, and the moving block 320 is movably disposed on the sliding groove 310. It is conceivable that the moving block 320 may be disposed on the supporting base 110 and the sliding groove 310 may be disposed on the cushion frame 120, and the function of the translational connection mechanism 300 may also be achieved. The moving block 320 may be a general slider or a slider with a roller. The translation connection mechanism 300 is simple in structure and easy to implement. It is envisioned that the specific configuration of the translating joint mechanism 300 is not limited to the embodiments described above, for example, the translating joint mechanism 300 may also be a linear guide assembly; it is understood that there are many connecting mechanisms in the art for achieving relative translation of the two members, and those skilled in the art can configure the connecting mechanisms according to actual situations.

Referring to fig. 1 and 7, in the embodiment, a locking device 400 for locking the position of the cushion frame 120 relative to the support base 110 is disposed between the cushion frame 120 and the support base 110, the locking device 400 is provided with an unlocking triggering portion 401 for controlling the locking device 400 to be unlocked, and the base assembly 100 is provided with an unlocking operation member 500, and the unlocking operation member 500 is configured to drive the locking device 400 into a locked state or an unlocked state. It is understood that when the locking device 400 is put into the locking state, it refers to the position of the locking cushion frame 120 relative to the support base 110. Accordingly, it can be understood that the locking device 400 is unlocked, which means that the cushion frame 120 is not locked, so that the cushion frame 120 can move relative to the support base 110. By providing the locking device 400, the position of the seat cushion frame 120 relative to the support base 110 can be locked or unlocked, thereby controlling the switching between the two states of the seat frame.

In an embodiment, the locking device 400 is configured as a controllable gas spring, which includes a cylinder 410 and a telescopic rod 420, wherein the cylinder 410 is connected to the seat cushion frame 120, and the telescopic rod 420 is connected to the support base 110. It is conceivable that the cylinder block 410 and the telescopic rod 420 may be reversed, that is, the cylinder block 410 is connected to the support base 110 and the telescopic rod 420 is connected to the seat cushion frame 120. The cylinder 410 and the extension rod 420 may be connected to the corresponding members in a pivot connection manner. The structure and the locking device 400 are controllable gas springs, so that the technology is mature and easy to obtain. When a controllable gas spring is used, the unlock trigger 401 is a lock control portion of the controllable gas spring. It is conceivable that the locking device 400 is not limited to the above-described structure, and may be, for example, a fitting structure of a resilient click pin and a shift click hole, or the like; there are many mechanisms in the art for achieving relative locking and unlocking of the two member positions, and those skilled in the art can specifically set the mechanism according to actual conditions.

In an embodiment, the unlocking operation member 500 is pivotally connected to the base assembly 100, the shifting member 600 is connected to the unlocking operation member 500, and the unlocking operation member 500 is rotated to toggle the unlocking triggering portion 401 through the shifting member 600. Of course, it is conceivable that the unlocking operation member 500 is not limited to the above-described structure, and may be triggered by a structure of a button, for example, which may be configured by those skilled in the art according to the specific situation.

In order to make the user adjust when lying the appearance steadily go on, this embodiment still is provided with elastic damping mechanism, and elastic damping mechanism configures to: when the backrest frame 200 moves away from the cushion frame 120, a restoring force is applied to the backrest frame 200. In the embodiment, the locking device 400 specifically adopts a gas spring structure, so that the cushion frame 120 has elastic damping when moving (and adjusts the relative position with the backrest frame 200), and indirectly has elastic damping when the backrest frame 200 adjusts the position, that is, the gas spring is equivalent to forming the above-mentioned elastic damping mechanism. It is conceivable that the elastic damping mechanism is not limited to a structure using a gas spring, and may be, for example, a spring, a torsion spring, or the like, and may be configured according to the actual situation.

The utility model also provides a seat, it includes foretell chair frame. The seat using the seat frame has the advantage that when the included angle between the backrest frame and the seat cushion frame is adjusted, the change of the gravity center position of the crotch of a user is small.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A chair frame, comprising:

a base assembly (100) comprising a support base (110) and a cushion frame (120), the cushion frame (120) being disposed on the support base (110);

the backrest frame (200) is rotatably arranged on the base component (100), and the backrest frame (200) can move away from and towards the cushion frame (120) to adjust the size of an included angle between the backrest frame (200) and the cushion frame (120);

the cushion frame (120) is movably connected with the supporting base (110) through a translation connecting mechanism (300) and can extend towards the front side and retract towards the rear side relative to the supporting base (110), the translation connecting mechanism (300) is configured to enable the cushion frame (120) to translate along a linear direction relative to the supporting base (110), and the lower end of the backrest frame (200) is connected with the cushion frame (120) and can translate along with the cushion frame (120); backrest frame (200) deviates from can link during cushion frame (120) activity cushion frame (120) are relative support base (110) translation ground stretches out toward the front side, backrest frame (200) are close to can link during cushion frame (120) activity cushion frame (120) are relative support base (110) translation ground is to the rear side indentation.

2. The chair frame of claim 1, wherein: the supporting base (110) is provided with a connecting seat (111), the backrest frame (200) is rotatably arranged on the connecting seat (111) and can rotate around a preset axis arranged along the left-right direction, the lower end of the backrest frame (200) is provided with a driving part (210) used for pushing and pulling the cushion frame (120), and the driving part (210) is connected with the cushion frame (120).

3. The chair frame of claim 2, wherein: the cushion frame (120) is provided with a strip-shaped hole (121), the strip-shaped hole (121) is vertically arranged, the driving portion (210) is configured to be a linkage shaft, the linkage shaft penetrates through the strip-shaped hole (121) and can move in the strip-shaped hole (121), and the linkage shaft is matched with the side wall of the strip-shaped hole (121) to push and pull the cushion frame (120).

4. The chair frame of claim 2, wherein: the backrest frame (200) is provided with a pivoting part (220), the pivoting part (220) is pivotally connected to the connecting seat (111) and the pivoting axis is arranged along the left and right directions.

5. The chair frame according to claim 2, 3 or 4, wherein: the two connecting seats (111) are arranged and respectively correspond to the left side and the right side of the backrest frame (200), and the left side and the right side of the backrest frame (200) are respectively rotatably arranged on the corresponding connecting seats (111); the two driving parts (210) are arranged and positioned at the left side and the right side of the backrest frame (200), and the two driving parts (210) are respectively connected with the left side and the right side of the cushion frame (120).

6. The chair frame of claim 1, wherein: the translation connecting mechanism (300) comprises a sliding groove (310) and a moving block (320) matched with the sliding groove (310), one of the moving block (320) and the sliding groove (310) is arranged on the cushion frame (120), the other one of the moving block (320) and the sliding groove (310) is arranged on the supporting base (110), the sliding groove (310) extends along the length direction of the cushion frame (120), and the moving block (320) is movably arranged on the sliding groove (310).

7. The chair frame of claim 1, wherein: cushion frame (120) with be provided with between support base (110) and be used for the locking cushion frame (120) is relative support base (110) the position locking device (400), locking device (400) are provided with and are used for control locking device (400) carry out unblock trigger part (401), base subassembly (100) are provided with unblock operating parts (500), unblock operating parts (500) configuration can order about locking device (400) get into locking state or unblock state.

8. The chair frame of claim 7, wherein: the locking device (400) is configured as a controllable gas spring comprising a cylinder body (410) and a telescopic rod (420), one of the cylinder body (410) and the telescopic rod (420) being connected with the cushion frame (120), and the other of the cylinder body (410) and the telescopic rod (420) being connected with the support base (110).

9. The chair frame of claim 7, wherein: further comprising an elastic damping mechanism configured to: when the backrest frame (200) moves away from the cushion frame (120), a reset force is applied to the backrest frame (200).

10. A seat comprising a frame as claimed in any one of claims 1 to 9.

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