CN217365123U - Chair armrest capable of locking rotation - Google Patents

Abstract

The utility model discloses a chair armrest capable of locking rotation, which comprises a support, wherein the lower end of the support is used for being connected with a chair; the locking block is coaxially and fixedly arranged at the upper end of the support, and a plurality of first clamping teeth are arranged on the side surface of the locking block along the circumferential direction; the armrest seat is arranged above the locking block and can rotate around the axis of the locking block; the locking rod is provided with a second latch, the locking rod is connected below the armrest seat and can swing between a first position and a second position, the second latch is meshed with the first latch at the first position, and the second latch is separated from the first latch at the second position; the utility model discloses a can lock rotatory chair handrail, after rotatory adjustment armrest chair to comfortable position, can lock the armrest chair, avoid the armrest chair to remove once more.

Description

Chair armrest capable of locking rotation

Technical Field

The utility model relates to a chair armrest technical field, in particular to can lock rotatory chair armrest.

Background

With the improvement of living standard of people, the comfort requirement of chairs, even armrests, is gradually improved. When people with different body types sit on the chair, the requirements on the state of the armrests are different. For office people, when the office people sit on the chair for a long time, the comfort level of the chair, even the comfort level of the armrests can influence the mood of people, and the existing chair armrests are generally difficult to fix after being adjusted.

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 can lock rotatory chair handrail, behind rotation adjustment arm-rest seat to comfortable position, can the locking arm-rest seat, avoid the arm-rest seat to remove once more.

According to the utility model discloses but rotatory chair handrail of locking, include: the lower end of the support is used for being connected with a chair;

the locking block is coaxially and fixedly arranged at the upper end of the support, and a plurality of first clamping teeth are arranged on the side surface of the locking block along the circumferential direction;

the armrest seat is arranged above the locking block and can rotate around the axis of the locking block;

the locking pole, be equipped with the second latch on the locking pole, the locking pole is connected the below of handrail seat, and can swing between primary importance and second place the primary importance, the second latch with the meshing of first latch the second place, the second latch with first latch separation.

According to the utility model discloses but rotatory chair handrail of locking has following technological effect at least: the lower end of the support is used for being connected with a chair, and when a person sits on the chair, the arm can be placed on the armrest seat; when the locking pole was in the primary importance, the second latch meshed with first latch, rotated the handrail seat this moment, because the locking pole is connected in the below of handrail seat, the locking pole also can receive by the pivoted trend, but the second latch is the engaged state with first latch, and the locking piece is fixed in the support upper end, can't rotate, and whole structure is all by rigid connection, has realized the rotation of locking handrail seat.

In some embodiments of the present invention, the second latch is disposed on one end of the locking rod, and the other end of the locking rod is provided with a pressing portion, the pressing portion is provided with a return spring between the armrest seats, the locking rod is further provided with a support, the support is connected to the bottom surface of the armrest seat, so that the locking rod can wind the support to swing and extrude the return spring, at the second position, the return spring is compressed, and at the first position, the return spring is in a recovery state.

In some embodiments of the present invention, a protective casing is further disposed between the armrest seat and the support, the protective casing wraps the lock block and the locking rod inside, an arc-shaped abdicating groove is disposed in the protective casing for corresponding placement of the support member, an abdicating opening is disposed on the protective casing, the abdicating opening corresponds to the position of the pressing portion, so that the pressing portion can extend out of the protective casing.

The utility model discloses an in some embodiments, the handrail seat orientation be equipped with annular boss in the one side of pressing the splenium, annular boss with reset spring is coaxial, a tip cartridge of reset spring is in the annular boss.

The utility model discloses an in some embodiments, press the splenium orientation be equipped with the spacing seat of cruciform in the one side of handrail seat, spacing seat with reset spring is coaxial, a tip suit of reset spring is in on the spacing seat.

The utility model discloses an in some embodiments, it is a plurality of first latch is followed the circumference of locking piece is arranged and is formed the arc, and in week, its curved both ends all are equipped with the stopper, the stopper is located the locking pole winds on the rotational movement route of locking piece axis.

In some embodiments of the present invention, the locking piece is detachably connected to the upper end of the support through a screw.

The utility model discloses an in some embodiments, the upper end of support is equipped with the spliced pole, the cross section of spliced pole is the polygon, the bottom correspondence of locking piece is equipped with the spread groove of same cross sectional shape, the spread groove suit is in on the spliced pole, the spread groove with all be equipped with coaxial screw hole on the spliced pole, the screw can be fixed in the screw hole.

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 an exploded view of an embodiment of the present invention;

fig. 2 is a schematic structural view of a lock block and a lock rod according to an embodiment of the present invention;

fig. 3 is a front view of an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a protective shell according to an embodiment of the present invention;

fig. 5 is a schematic view of an annular boss structure according to an embodiment of the present invention;

FIG. 6 is a schematic view of a spacing seat according to an embodiment of the present invention;

fig. 7 is a schematic view of a matching structure of a connecting column and a connecting groove according to an embodiment of the present invention.

Reference numerals:

the handle comprises a support 100, a connecting column 110, a locking block 200, a first latch 210, a limiting block 220, a connecting groove 230, a handrail seat 300, an annular boss 310, a locking rod 400, a second latch 410, a pressing part 420, a limiting seat 421, a support part 430, a return spring 500, a protective shell 600, a yielding groove 610 and a yielding opening 620.

Detailed Description

Reference will now be made in detail to the 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 functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of 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 terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 and 2, a lockable rotary chair armrest according to an embodiment of the present invention includes: a support 100, the lower end of the support 100 being used for connecting with a chair;

the locking block 200 is coaxially and fixedly arranged at the upper end of the support 100, and a plurality of first clamping teeth 210 are arranged on the side surface of the locking block 200 along the circumferential direction;

the armrest seat 300 is arranged above the locking block 200, and can rotate around the axis of the locking block 200;

the locking lever 400 is provided with a second latch 410, the locking lever 400 is connected below the handle rest 300 and can swing between a first position where the second latch 410 is engaged with the first latch 210 and a second position where the second latch 410 is separated from the first latch 210.

The lower end of the support 100 is used to be coupled to a chair on which a person sits and can place his arms on the arm rest 300. When the locking pole 400 is in the first position, second latch 410 and the meshing of first latch 210 rotate handrail seat 300 this moment, because the locking pole 400 is connected in the below of handrail seat 300, the locking pole 400 also can receive the trend of being rotated, but second latch 410 and first latch 210 are the engaged state, and locking piece 200 is fixed in support 100 upper end, and unable rotation, whole structure is all by rigid connection, has realized the rotation of locking handrail seat 300.

When the armrest seat 300 needs to be adjusted by rotation, the locking rod 400 is firstly swung to the second position, i.e. the second latch 410 is separated from the first latch 210, the locking rod 400 is not connected with the locking block 200, and the armrest seat 300 can be rotated at the moment; after the position is adjusted to the proper position, the locking rod 400 is swung to the first position, the first latch 210 and the second latch 410 are engaged again, and the armrest seat 300 is locked to rotate.

Referring to fig. 3, in some embodiments of the present invention, the second latch 410 is disposed on one end of the locking rod 400, the other end of the locking rod is provided with a pressing portion 420, a return spring 500 is disposed between the pressing portion 420 and the armrest seat 300, a support 430 is further disposed on the locking rod 400, and the support 430 is connected to the bottom surface of the armrest seat 300, so that the locking rod 400 can swing around the support 430 to squeeze the return spring 500, the return spring 500 is compressed in the second position, and the return spring 500 is in the restoring state in the first position.

When pressure is applied to the pressing part 420 in the direction of the armrest seat 300, the pressing part 420 is forced to approach the armrest seat 300, the return spring 500 disposed between the pressing part 420 and the armrest seat 300 is compressed, and meanwhile, the support member 430 is connected to the bottom surface of the armrest seat 300, so that the locking rod 400 is in a lever structure, that is, the second latch 410 moves in a direction away from the armrest seat 300 (and in a direction away from the first latch 210), the second latch 410 is separated from the first latch 210, and the locking rod 400 is located at the second position; when the pressing portion 420 is released, i.e. the pressure on the pressing portion 420 is removed, the pressing portion 420 is moved away from the armrest seat 300 by the restoring force of the return spring 500, and the second latch 410 moves closer to the first latch 210, so that the first latch 210 and the second latch 410 are locked by engagement.

Referring to fig. 4, in some embodiments of the present invention, a protective casing 600 is further disposed between the armrest seat 300 and the support 100, the protective casing 600 wraps the locking block 200 and the locking rod 400 inside, an arc-shaped abdicating groove 610 is disposed in the protective casing 600 to correspondingly place the support 430, an abdicating opening 620 is disposed on the protective casing 600, the abdicating opening 620 corresponds to the pressing portion 420, so that the pressing portion 420 can extend out of the protective casing 600.

The protective case 600 can protect the connection structure of the locking piece 200 and the locking lever 400, prolong the service life of the device, and prevent foreign materials from entering the first latch 210 or the second latch 410 to avoid movement blockage; the supporting member 430 is placed in the receding groove 610 to have a certain limiting effect, so as to prevent the locking rod 400 from being displaced; the setting lets a position mouth 620, can stretch out the protective case 600 with pressing the portion 420 outward, conveniently exerts the pressing force to pressing the portion 420.

Referring to fig. 5, in some embodiments of the present invention, an annular boss 310 is disposed on a surface of the armrest base 300 facing the pressing portion 420, the annular boss 310 is coaxial with the return spring 500, and an end of the return spring 500 is inserted into the annular boss 310.

The spring compression has an inherent characteristic of being easy to deflect, that is, when the return spring 500 is compressed by a force, the direction of the applied force is not easy to control, so that the repulsive force generated by the return spring 500 is easily affected by the external force, the direction of the repulsive force is not on an axis, and a component force perpendicular to the axis exists at the end of the return spring 500, so that the return spring is easy to deflect. One end of the return spring 500 is inserted into the annular boss 310, so that the end of the return spring 500 is limited, and the structural failure caused by the deviation and the releasing of the end of the return spring 500 in a compression state is avoided.

Referring to fig. 6, in some embodiments of the present invention, the pressing portion 420 is provided with a cross-shaped spacing seat 421 on one side of the armrest seat 300, the spacing seat 421 is coaxial with the return spring 500, and an end of the return spring 500 is sleeved on the spacing seat 421.

The spring compression has an inherent characteristic of being easy to deflect, that is, when the return spring 500 is compressed by a force, the direction of the applied force is not easy to control, so that the repulsive force generated by the return spring 500 is easily affected by the external force, the direction of the repulsive force is not on an axis, and a component force perpendicular to the axis exists at the end of the return spring 500, so that the return spring is easy to deflect. One end of the return spring 500 is sleeved on the limiting seat 421 to limit the end of the return spring 500, so that the end of the return spring 500 is prevented from deviating and deviating in a compression state to cause structural failure.

In some embodiments of the present invention, the plurality of first latches 210 form an arc shape along the circumferential arrangement of the lock block 200, and in the circumferential direction, both ends of the arc shape are provided with the stoppers 220, and the stoppers 220 are located on the rotational movement path of the locking rod 400 around the axis of the lock block 200.

When the locking rod 400 is in the second position, the locking rod 400 can rotate together with the handle rest 300, and the limiting block 220 is positioned on the rotation path of the locking rod 400 and can block the movement of the locking rod 400, so that the rotation angle of the handle rest 300 can be limited; the angle range of the rotation adjustment of the armrest seat 300 can be controlled only by arranging a plurality of first latches 210 along the circumferential direction of the lock block 200 to form an arc-shaped angle and matching with the limit block 220.

In some embodiments of the present invention, the locking block 200 is detachably connected to the upper end of the support 100 by a screw.

Through the detachable connection of screw, can replace locking piece 200 fast, receive artificial damage or other factors when locking piece 200 leads to first latch 210 wearing and tearing or fracture, can maintain through the mode of changing locking piece 200.

Referring to fig. 7, in some embodiments of the present invention, the upper end of the support 100 is provided with the connecting column 110, the cross section of the connecting column 110 is polygonal, the bottom of the locking block 200 corresponds to the connecting groove 230 with the same cross-sectional shape, the connecting groove 230 is sleeved on the connecting column 110, coaxial threaded holes are provided on the connecting groove 230 and the connecting column 110, and the screw can be fixed in the threaded hole.

When the first latch 210 and the second latch 410 are engaged, that is, the armrest 300 is in a locked state, if a torque is applied to the armrest 300, the lock block 200 will tend to rotate, and if the lock block 200 and the support 100 are connected only by screws, the screws will loosen over time; set up connecting groove 230 and spliced pole 110 and carry out the suit cooperation, and the cross section is the polygon for spliced pole 110 can provide reaction force in order to resist rotatory trend to connecting groove 230, guarantees that the screw is in fastening state all the time, prolongs the life of screw.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A lockable swivel chair armrest comprising:

the lower end of the support (100) is used for being connected with a chair;

the locking block (200) is coaxially and fixedly arranged at the upper end of the support (100), and a plurality of first clamping teeth (210) are arranged on the side surface of the locking block (200) along the circumferential direction;

the armrest seat (300) is arranged above the lock block (200) and can rotate around the axis of the lock block (200);

the locking pole (400), be equipped with second latch (410) on the locking pole (400), locking pole (400) are connected the below of handrail seat (300), and can swing between primary importance and second place primary importance, second latch (410) with first latch (210) meshing the second place, second latch (410) with first latch (210) separation.

2. The lockable rotation chair armrest according to claim 1, wherein the second latch (410) is disposed at one end of the locking lever (400), the other end of the second latch is provided with a pressing portion (420), a return spring (500) is disposed between the pressing portion (420) and the armrest seat (300), a support (430) is further disposed on the locking lever (400), and the support (430) is connected to the bottom surface of the armrest seat (300) so that the locking lever (400) can swing around the support (430) to press the return spring (500), the return spring (500) is compressed at the second position, and the return spring (500) is in a return state at the first position.

3. The lockable rotary chair armrest according to claim 2, wherein a protective shell (600) is further arranged between the armrest seat (300) and the support (100), the locking block (200) and the locking rod (400) are wrapped inside the protective shell (600), an arc-shaped abdicating groove (610) is formed in the protective shell (600) to correspondingly place the support (430), an abdicating opening (620) is formed in the protective shell (600), and the abdicating opening (620) corresponds to the position of the pressing portion (420), so that the pressing portion (420) can extend out of the protective shell (600).

4. The lockable rotation chair armrest according to claim 2, characterized in that one side of the armrest seat (300) facing the pressing part (420) is provided with an annular boss (310), the annular boss (310) is coaxial with the return spring (500), and one end of the return spring (500) is inserted into the annular boss (310).

5. The lockable rotary chair armrest according to claim 2, wherein a cross-shaped limiting seat (421) is provided on a surface of the pressing part (420) facing the armrest seat (300), the limiting seat (421) is coaxial with the return spring (500), and an end of the return spring (500) is sleeved on the limiting seat (421).

6. The lockable rotary chair armrest according to claim 1, wherein the plurality of first latches (210) are arranged in an arc shape along the circumferential direction of the lock block (200), and in the circumferential direction, both ends of the arc shape are provided with the limit blocks (220), and the limit blocks (220) are located on the rotary moving path of the locking lever (400) around the axis of the lock block (200).

7. The lockable rotary chair armrest as claimed in claim 1, characterized in that the locking block (200) is detachably connected to the upper end of the support (100) by means of a screw.

8. The lockable rotary chair armrest according to claim 7, wherein the upper end of the support (100) is provided with a connecting column (110), the cross section of the connecting column (110) is polygonal, the bottom of the lock block (200) is correspondingly provided with a connecting groove (230) with the same cross-sectional shape, the connecting groove (230) is sleeved on the connecting column (110), and the connecting groove (230) and the connecting column (110) are both provided with coaxial threaded holes in which the screws can be fixed.

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