CN214855575U

CN214855575U - Height-adjustable armrest of office chair

Info

Publication number: CN214855575U
Application number: CN202023299427.6U
Authority: CN
Inventors: 章慧琦
Original assignee: Anji Shiyi Furniture Co ltd
Current assignee: Anji Shiyi Furniture Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-26
Anticipated expiration: 2030-12-31

Abstract

The utility model provides an office chair handrail with adjustable height, which belongs to the technical field of office chairs. The utility model provides a but height-adjusting's office chair handrail, set up on the protection intermediate layer of office chair cushion both sides, include with handrail rigid coupling and holding in the intraformational telescopic link of protection intermediate layer, with the first carriage release lever of telescopic link surface rigid coupling, with the nut of first carriage release lever rigid coupling, with nut threaded connection's screw rod, the drive assembly of drive screw motion, the interbedded inner wall rigid coupling of protection has the dead lever, the dead lever is close to handrail one side and is provided with the fixed slot, sliding connection has the second carriage release lever in the fixed slot, second connecting rod and nut fixed connection. The utility model discloses be provided with screw rod and nut cooperation transmission, and then make the handrail up-and-down motion that is located the telescopic link top, the user can carry out accurate regulation to the whole height of handrail, satisfies the user and to the requirement of handrail height, improves the comfort level that the handrail used.

Description

Height-adjustable armrest of office chair

Technical Field

The utility model relates to an office chair technical field, concretely relates to but height-adjusting's office chair handrail.

Background

The office chair refers to various chairs which are equipped for working conveniently in daily work and social activities. The office chair is the indispensable office furniture of daily official working, and in modern office life, the office chair handrail is realized through the independent spare part matched stack of single function, and the handrail function singleness of daily use, the structure is simpler, and the handrail can not adjust according to user's custom, influences the comfort level that people sat.

Therefore, it is highly desirable to design a handrail with adjustable height to improve the comfort of sitting. For example, chinese patent utility model patent CN210407773U provides an adjustable handrail structure of office chair, including the handrail, the lower fixed surface of handrail is connected with the backup pad, the top of backup pad right flank is through the left end fixed connection of head and electric putter, electric putter's right-hand member passes through the opposite face joint of rotary device with two fixed plates, and the equal fixed connection in the lower surface of folded sheet of upper surface of two fixed plates, the left side of folded sheet lower surface is articulated through the right side of a plurality of hinge and handrail lower surface, and the left surface overlap joint of folded sheet is at the right flank of handrail, the lower fixed surface of backup pad is connected with the connecting plate, a plurality of screw through-hole has been seted up to the upper surface of connecting plate, the positive top of backup pad is provided with the power, the front of power is provided with the switch.

The above described device still suffers from the following disadvantages: 1. the device can only adjust the height of one end of the supporting plate through the electric push rod, and cannot adjust the height of the whole handrail when in use, thereby failing to meet the requirements of different users on the height of the handrail; 2. the movable block in the device rotates on the fixed block through the pin shaft, so that the requirement on the precision of the pin shaft connecting hole is high, and the production cost is improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a height of high-efficient regulation office chair handrail provides a height-adjustable office chair handrail to the not enough of above-mentioned prior art.

The utility model provides a but height-adjusting's office chair handrail sets up on the protection intermediate layer of office chair cushion both sides, include with handrail rigid coupling and holding in intraformational telescopic link is pressed from both sides in the protection, with the first carriage release lever of telescopic link surface rigid coupling, with the nut of first carriage release lever rigid coupling, with nut threaded connection's screw rod, drive the drive assembly of screw rod motion, protection interbedded inner wall rigid coupling has the dead lever, the dead lever is close to handrail one side and is provided with the fixed slot, sliding connection has the second carriage release lever in the fixed slot, second carriage release lever and nut fixed connection.

Preferably, the driving assembly comprises a first gear fixedly connected with the bottom of the screw, a second gear in meshing transmission with the first gear, and a first motor for driving the second gear to rotate.

Preferably, a speed reducer is arranged between the first motor and the second gear.

Preferably, the first gear and the second gear are both helical gears.

Preferably, the inner walls of the two sides of the fixing groove are both provided with sliding grooves, and one end of the second moving rod is provided with a sliding block part which is matched with the sliding grooves to move.

Preferably, the sliding block part comprises a connecting part connected with the second moving rod and a limiting part fixedly connected with the connecting part and matched with the sliding groove to move.

Preferably, still be equipped with the threaded rod subassembly between connecting portion and the second carriage release lever, the threaded rod subassembly include with the buried nut in advance of connecting portion rigid coupling, one end with the screwed connection pole that buried nut threaded connection just the other end is connected with the second carriage release lever, with second carriage release lever swing joint is used for fastening screwed connection pole's eccentric locking wheel.

Preferably, the one end of connecting portion is seted up and is supplied the first connecting hole of embedded nut embedding, the second carriage release lever with set up on the contact surface of connecting portion and supply the male second connecting hole of screw connecting rod, the lateral wall of second carriage release lever set up with eccentric locking wheel complex third connecting hole.

Preferably, the number of the first connection holes is 1 or 2.

Preferably, the second connecting hole and the third connecting hole are perpendicular to each other and are communicated with each other.

The utility model discloses a but height-adjusting's office chair handrail has following beneficial effect:

1. the utility model discloses be provided with screw rod and nut cooperation transmission, the screw rod rotates and makes the nut reciprocate, and the nut drives the telescopic link extension or shortens, and then makes the handrail up-and-down motion that is located the telescopic link top, and the user can highly carry out accurate regulation to the handrail is holistic, satisfies the user to the requirement of handrail height, improves the comfort level that the handrail used.

2. The utility model discloses a helical gear comes transmission screw rod pivoted drive power, not only can make the transmission of power steady, and is efficient, compact structure, and the reliable operation can change the direction of transfer of power moreover, and then changes the mounted position of components such as motor, has saved installation space.

3. The utility model discloses a second carriage release lever and slider portion are connected to the threaded rod subassembly, and buried nut in the threaded rod subassembly and eccentric wheel are located first connecting hole and second connecting hole respectively, and both connect through the screw connecting rod, have not only saved installation space, have still avoided appearing the problem of interfering in the motion process.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

Fig. 1 is a schematic structural view of an adjustable height armrest of an office chair according to an embodiment of the present invention.

Fig. 2 is a front view of an adjustable height armrest for an office chair according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a fixing plate and a second movable rod according to an embodiment of the present invention.

Fig. 4 is an exploded view of a threaded rod assembly according to an embodiment of the present invention.

In the figure, 1, a handrail; 2. a telescopic rod; 3. a protective interlayer; 4. a first movable bar; 5. a nut; 6. a screw; 7. a drive assembly; 701. a second gear; 702. a first gear; 703. a speed reducer; 704. a first motor; 8. fixing the rod; 801. fixing grooves; 802. a chute; 9. a second movable bar; 901. a third connection hole; 902. a second connection hole; 10. a slider portion; 1001. a limiting part; 1002. a connecting portion; 1003. a first connection hole; 11. a threaded rod assembly; 1101. pre-burying a nut; 1102. a screw connecting rod; 1103. an eccentric locking wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The first embodiment is as follows: as shown in fig. 1-2, it is only one of the embodiments of the present invention, a height-adjustable armrest for an office chair, including a telescopic rod 2 fixedly connected to an armrest 1 and accommodated in a protective interlayer 3, a first movable rod 4 fixedly connected to an outer surface of the telescopic rod 2, a nut 5 fixedly connected to the first movable rod 4, a screw 6 connected to the nut 5 by a thread, a driving component 7 for driving the screw 6 to move, a fixing rod 8 fixedly connected to an inner wall of the protective interlayer 3, a fixing groove 801 provided on one side of the fixing rod 8 close to the armrest 1, a second movable rod 9 slidably connected to the fixing groove 801, and a second movable rod 9 fixedly connected to the nut 5.

The utility model discloses in, drive assembly 7 include with the gear of 6 bottom rigid couplings of screw rod 702, with a gear 702 meshing driven gear two 701, drive gear two 701 pivoted motor 704, when considering to adjust handrail 1 height, handrail 1 rises or the speed that descends should not be too fast, sets up reduction gear 703 between motor 704 and gear two 701, reduction gear 703 can effectively reduce the rotational speed of motor output shaft, and then reduces the rotational speed of screw rod 6, increases the stationarity of work. It should be noted that the driving source may be not only the motor one 704, but also a manual operation may be used to drive the output shaft to rotate.

The first gear 702 and the second gear 701 can be helical gears or straight gears, so that the installation is convenient, the installation space is saved, and the helical gears are preferably used.

The telescopic link 2 divide into two parts, include with 1 fixed connection's of handrail move the pole and with move pole sliding connection's fixed pole, the bottom of fixed pole is passed through the bearing and is connected with the bottom rotation of protection

intermediate layer

3, and 6 bottoms of screw rod are passed through the bearing and are connected with the bottom rotation of protection intermediate layer 3, and slide bearing can be chooseed for use to the bearing.

The working process of the height-adjustable office chair armrest comprises the following steps: when the nut 5 moves upwards, the first moving rod 4 fixedly connected with the nut 5 drives the moving rod of the telescopic rod 2 to move upwards, and the handrail 1 at the top end of the telescopic rod 2 moves upwards along with the screw rod, so that the purpose of lifting the height of the handrail 1 is achieved; on the contrary, when the nut 5 moves downwards, the handrail 1 moves downwards, and the purpose of reducing the height of the handrail 1 is achieved.

The utility model discloses the structure is exquisite, is provided with

screw rod

6 and 5 cooperation transmissions of nut, and screw rod 6 rotates and makes nut 5 reciprocate, and nut 5 drives 2 extensions of telescopic link or shortens, and then makes the handrail 1 up-and-down motion that is located 2 tops of telescopic link, and the user can carry out accurate regulation to 1 holistic height of handrail, satisfies the user to the requirement of handrail 1 height, improves the comfort level that handrail 1 used.

Example two: as shown in fig. 3-4, only one of the embodiments of the present invention is that, on the basis of the first embodiment, in an armrest of an office chair with adjustable height, a sliding groove 802 has been opened on the inner walls of both sides of a fixing groove 801, a sliding block portion 10 that moves in cooperation with the sliding groove 802 is provided at one end of a second moving rod 9, the sliding block portion 10 includes a connecting portion 1002 connected to the second moving rod 9, and a limiting portion 1001 that is fixedly connected to the connecting portion 1002 and moves in cooperation with the sliding groove 802, the cross section of the limiting portion 1001 is rectangular, and the sliding groove 802 is a rectangular groove. The cross section of the limiting part 1001 can also be V-shaped, and the sliding groove 802 is a V-shaped groove.

A threaded rod assembly 11 is further arranged between the connecting portion 1002 and the second moving rod 9, and the threaded rod assembly 11 comprises a pre-embedded nut 1101 fixedly connected with the connecting portion 1002, a screw connecting rod 1102 with one end in threaded connection with the pre-embedded nut 1101 and the other end in connection with the second moving rod 9, and an eccentric locking wheel 1103 movably connected with the second moving rod 9 and used for fastening the screw connecting rod 1102.

The one end of connecting portion 1002 is seted up and is supplied the first connecting hole 1003 of embedded nut 1101 embedding, set up on the contact surface of second carriage release lever 9 and connecting portion 1002 and supply the male second connecting hole 902 of screw connecting rod 1102, the lateral wall of second carriage release lever 9 is seted up and is matched with eccentric locking wheel 1103's third connecting hole 901, the quantity of first connecting hole 1003 can be 1 or 2, in order to make the connection of connecting portion 1002 and second carriage release lever 9 more stable, the quantity of first connecting hole 1003 is preferred 2.

The second connection hole 902 and the third connection hole 901 are perpendicular to each other and communicate with each other.

The embedded nut 1101 is inserted into the first connecting hole 1003, the screw connecting rod 1102 is inserted into the second connecting hole 902, then the eccentric wheel is placed into the third connecting hole 901, one end, extending out of the second connecting hole 902, of the screw connecting rod 1102 is inserted into the embedded nut 1101, and a screwdriver is used for screwing the eccentric wheel, so that the connecting portion 1002 is tightly connected with the second movable rod 9.

The above-described embodiments can be implemented individually or in various combinations, and such variations are within the scope of the present invention.

It should be noted that, in the description of the present application, it should be noted that the terms "upper end", "lower end" and "bottom end" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the application is usually placed in when the product of the application is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a but height-adjusting's office chair handrail sets up on protection intermediate layer (3) of office chair cushion both sides, its characterized in that: the handrail protection device comprises a telescopic rod (2) fixedly connected with a handrail (1) and contained in a protection interlayer (3), a first moving rod (4) fixedly connected with the outer surface of the telescopic rod (2), a nut (5) fixedly connected with the first moving rod (4), a screw (6) in threaded connection with the nut (5), and a driving assembly (7) for driving the screw (6) to move, wherein a fixing rod (8) is fixedly connected to the inner wall of the protection interlayer (3), a fixing groove (801) is formed in one side, close to the handrail (1), of the fixing rod (8), a second moving rod (9) is connected in the fixing groove (801) in a sliding mode, and the second moving rod (9) is fixedly connected with the nut (5).

2. An adjustable height office chair armrest as claimed in claim 1 wherein: the driving component (7) comprises a first gear (702) fixedly connected with the bottom of the screw rod (6), a second gear (701) in meshing transmission with the first gear (702), and a first motor (704) for driving the second gear (701) to rotate.

3. An adjustable height office chair armrest as claimed in claim 2 wherein: a speed reducer (703) is arranged between the first motor (704) and the second gear (701).

4. An adjustable height office chair armrest as claimed in claim 2 wherein: the first gear (702) and the second gear (701) are both helical gears.

5. An adjustable height office chair armrest as claimed in claim 1 wherein: the sliding grooves (802) are formed in the inner walls of the two sides of the fixing groove (801), and a sliding block portion (10) matched with the sliding grooves (802) to move is arranged at one end of the second moving rod (9).

6. An adjustable height office chair armrest as claimed in claim 5 wherein: the sliding block part (10) comprises a connecting part (1002) connected with the second moving rod (9) and a limiting part (1001) fixedly connected with the connecting part (1002) and matched with the sliding groove (802) to move.

7. An adjustable height office chair armrest as claimed in claim 6 wherein: still be equipped with screw rod subassembly (11) between connecting portion (1002) and second carriage release lever (9), screw rod subassembly (11) include with embedded nut (1101) of connecting portion (1002) rigid coupling, one end with screwed connection pole (1102) that embedded nut (1101) threaded connection and the other end are connected with second carriage release lever (9), with second carriage release lever (9) swing joint is used for fastening eccentric locking wheel (1103) of screwed connection pole (1102).

8. An adjustable height office chair armrest as claimed in claim 7 wherein: one end of the connecting portion (1002) is provided with a first connecting hole (1003) for embedding an embedded nut (1101), a second connecting hole (902) for inserting the screw connecting rod (1102) is formed in the contact surface of the second moving rod (9) and the connecting portion (1002), and a third connecting hole (901) matched with the eccentric locking wheel (1103) is formed in the side wall of the second moving rod (9).

9. An adjustable height office chair armrest as claimed in claim 8 wherein: the number of the first connecting holes (1003) is 1 or 2.

10. An adjustable height office chair armrest as claimed in claim 8 wherein: the second connecting hole (902) is vertical to and communicated with the third connecting hole (901).