CN201048728Y - Armrest adjusting structure of office chair - Google Patents

Abstract

An armrest adjustment structure for an office chair, comprising: a support body and an armrest body; the supporting body is longitudinally arranged, the bottom end of the supporting body is connected to one side of the seat body of the office chair, a sunken accommodating space is formed at the front edge of the upper section part, and a plurality of continuously arranged concave parts are arranged on the front wall surface from top to bottom; the hollow sleeve body is sleeved on the periphery of the support body in a lifting manner, the periphery of the upward opening of the hollow sleeve body forms a flange for combination, and a through hole is formed below the flange in the forward direction; a pivot shaft is formed at the upper end of the lock handle and can be pivoted at a position corresponding to the accommodating space of the support body in the hollow sleeve body, an embeddable convex body is arranged at the bottom end corresponding to the concave part, a spring is arranged between the front side surface of the lock handle and the wall surface of the hollow sleeve body, so that the lock handle has elastic thrust towards the concave part, and the pivot shaft of the lock handle extends forwards to penetrate through the buckling part of the through hole of the hollow sleeve body; the fixing plate is locked on the flange of the hollow sleeve, and a positioning seat is arranged in the center of the fixing plate; the handrail body is transversely arranged above the hollow sleeve and is linked with the hollow sleeve to lift.

Description

Armrest adjustment structure of office chair

technical field

The utility model relates to office furniture, in particular to an armrest adjustment structure of a height-adjustable office chair.

Background technique

Referring to Fig. 1, it is a schematic diagram of the three-dimensional structure of an existing office chair 10, and an armrest device 13 composed of a support body 11 and an armrest body 12 is provided on both sides thereof, so that the user's hands can lean against the armrest body 12 up and feel comfortable. But existing supporting body 11 and handrail body 12 mostly all are to be integrally formed by plastic injection, or are constituted supporting body 11 by metal, then install the handrail body 12 that plastic is made on it again, therefore, it is fixed and Neither the height nor the angle can be adjusted, so the needs of individual users cannot be met.

Although US Patent No. 6062646 discloses an Adjustable-High Armrest (adjustable height armrest), the locking bolts are located in the middle of the armrest carruier, which is inconvenient for users to adjust the height position. Lack of user-friendly operation interface. In addition, US Patent No. 6948775 discloses an Office Chair Armrest (office chair armrest), which can adjust the angle and front and rear displacement of the armrest, but it cannot adjust the height position. After the armrest is adjusted to an appropriate height, the user needs to adjust the angle and front-back position to have practical effects. Otherwise, the armrest at a position that is too high or too low, or just adjusting the angle and front-back position, cannot really make the user feel comfortable.

Utility model content

The main purpose of this utility model is to overcome the above-mentioned shortcomings existing in the existing products, and provide an armrest adjustment structure of an office chair, the buckle part of the adjusted lock handle is located at the bottom edge of the armrest, just the arm is placed on the armrest above, and the finger can be buckled to the position of the lock handle, which has the effect of convenient adjustment and humanization.

Another object of the present invention is to provide an armrest adjustment structure of an office chair. After the armrest is adjusted in height, its placement angle and front and rear position can be further adjusted, so that the armrest has a three-dimensional adjustment effect.

The purpose of this utility model is achieved by the following technical solutions.

The utility model relates to an armrest adjustment structure of an office chair, comprising: a support body and an armrest body; it is characterized in that the support body is vertically arranged, its bottom end is connected to one side of the office chair seat body, and the front edge of the upper part forms a A recessed accommodation space, the front wall is provided with several recesses arranged continuously from top to bottom; a hollow sleeve, which can be lifted and lowered, is placed on the periphery of the support body, and the upward opening peripheral edge forms a joint flange, and A perforation is provided at the bottom of the flange facing forward; a lock handle, whose upper end forms a pivot shaft, can be pivotally arranged in the hollow sleeve body relative to the position of the supporting body accommodation space, and its bottom end is provided with an insertable Convex body, a spring is provided between the front side of the lock handle and the wall of the hollow sleeve, so that the lock handle has an elastic thrust towards the concave part, and the lock handle extends forward at the pivot shaft to pass through the buckling part of the hollow sleeve perforation; A fixing plate is locked on the flange of the hollow sleeve, and a positioning seat is arranged in the center of the fixing plate; the handrail body is arranged horizontally above the hollow sleeve, and moves up and down with the hollow sleeve.

In the armrest adjustment structure of the aforementioned office chair, more than one C-shaped rubber ring is provided on the peripheral edge of the supporting body.

In the armrest adjustment structure of the aforementioned office chair, a buckle handle is covered with the buckle part of the lock handle.

The armrest adjustment structure of the aforementioned office chair is characterized in that the armrest body includes: a shell, a recessed space is formed above it, a transverse slot hole is provided in the center of the bottom plate, and the transverse slot hole is sleeved on the positioning seat of the fixing plate, There are two parallel clips on the inner bottom plate of the shell, and multiple longitudinal ribs are provided on the opposite inner side of the two clips; a base is set between the two clips of the shell, and a groove and a through hole are formed on the top of it. The upper surface of the groove is provided with multiple transverse convex ribs, and a convex arc is provided on the two outer surfaces of the two clips relative to the convex ribs; a pressing block is arranged in the groove of the base, and a joint seat is formed in the center of the joint seat. Go through the through hole of the base, set it on the positioning seat of the fixing plate, and fix it with a screw, and a clamping body is set in the concave hole on the front and rear bottom of the pressing block; an upper cover is locked on the outer shell; An arm watch layer is fixed on the surface of the upper cover.

The beneficial effect of the armrest adjustment structure of the office chair of the utility model is that it includes: a support body, the bottom end of which is connected to one side of the seat body of the office chair, a concave accommodation space is formed at the front edge of the upper part, and several continuous Concaves arranged in a row; a hollow sleeve, which is sleeved on the periphery of the supporting body and can be raised and lowered on it; a lock handle, the upper end of which forms a pivot shaft, and the bottom end of which is provided with a embeddable convex body relative to the concave portion; Also, a spring is provided between the front side of the lock handle and the wall of the hollow sleeve, so that the lock handle has an elastic thrust toward the recess; moreover, the lock handle extends forward at the pivot shaft to pass through the hole of the hollow sleeve The buckle part of the armrest; an armrest body is arranged horizontally above the hollow sleeve, and moves up and down along with the hollow sleeve; since the lock handle buckle part is set on the bottom edge of the armrest, the arm is just placed on the top of the armrest, and the fingers It can be buckled to the position of the lock handle, which is easy to adjust. After the height of the armrest is adjusted, its placement angle and front and rear position can be further adjusted, so that the armrest has a three-dimensional adjustment effect.

Description of drawings:

Fig. 1 is a structural schematic diagram of an existing office chair.

Fig. 2 is the external view of the three-dimensional structure of the utility model.

Fig. 3 is an exploded schematic view of the three-dimensional structure of the utility model.

Fig. 4 is the structural sectional view of the utility model.

Fig. 5 is a schematic diagram of the armrest shown in Fig. 4 rising upwards.

Fig. 6 is a schematic view of the utility model in use.

Fig. 7 is a partial sectional view of the top view structure of the armrest body of the present invention.

Fig. 8 is a schematic diagram of another usage state of the utility model.

Explanation of main symbols in the figure: 10 office chair, 11 support body, 12 armrest body, 13 armrest device, 20 armrest, 21 support body, 211 accommodation space, 212 concave part, 213 is a C-shaped rubber ring, 22 hollow sleeve body, 221 convex Edge, 222 perforation, 23 lock handle, 231 pivot shaft, 232 convex body, 233 buckle part, 234 buckle handle, 235 spring, 24 fixed plate, 241 positioning seat, 25 shell, 251 base plate, 252 transverse slot hole, 253 Clip, 254 longitudinal convex rib, 26 base, 261 groove, 262 through hole, 263 convex arc, 264 convex rib, 27 pressing block, 271 screw, 272 combination seat, 273 concave hole, 274 clamping body, 28 upper Cover, 29 armrest watch layers, 20 armrest bodies, 40 seat bodies.

Detailed ways

Referring to Fig. 2, Fig. 3 and Fig. 4, the structure of the armrest 20 disclosed by the utility model includes: a supporting body 21, which is vertically arranged, and its bottom end is connected to one side of the office chair seat body 40, and its upper section is front The edge forms a recessed accommodation space 211, and its front wall is provided with several concavities 212 arranged continuously from top to bottom; a hollow casing 22 is sleeved on the outer periphery of the support body 21, and can be raised and lowered on it. The upper edge of the opening forms a flange 221 for combination, and a perforation 222 is provided at the bottom of the flange 221 toward the front; Relative to the position of the accommodating space 211 of the support body 21, and its bottom end is provided with a embeddable convex body 232 relative to the concave portion 212, and a spring 235 is provided between the front side of the lock handle 23 and the wall surface of the hollow sleeve 22, Make the lock handle 23 have an elastic thrust towards the recess 212, moreover, the lock handle 23 extends forward at the pivot shaft 231 to a buckle part 233 passing through the perforation 222 of the hollow sleeve body 22; a fixed plate 24 is Locked on the flange 221 of the hollow sleeve 22, and a positioning seat 241 is provided in the center of the fixing plate 24; a handrail body 30 is arranged horizontally above the hollow sleeve 22, and moves up and down with the hollow sleeve 22 .

In addition, more than one C-shaped rubber ring 213 is provided on the groove on the outer peripheral edge of the support body 21 to increase the closeness between it and the inner wall of the hollow sleeve 22 .

Furthermore, the locking portion 233 of the lock handle 23 also includes a buckle handle 234 sheathed therein, thereby making it convenient for fingers to control the lock (LOCK) or unlock (UNLOCK) of the lock handle 23 .

Referring to Fig. 5 and Fig. 6, when the user needs to adjust the lifting of the armrest body 30, use the fingers to hook up the buckle 234, and at this time the lock handle 23 takes the pivot shaft 231 as the axis to make the bottom end shift forward, Then the convex body 232 is separated from the recess 212 outwards, so that the hollow sleeve 22 can be lifted up and down on the support body 21. After reaching a predetermined height, the finger releases the buckle 234, so that the lock handle 23 is turned inward by the spring 235, and the The convex body 232 is clamped in the concave portion 212 again, so that the hollow casing 22 is fixed.

The height adjustment of the armrest body 30 of the present utility model is controlled by the lock handle 23 in the hollow sleeve 22, and its buckle part 233 and buckle handle 234 are just located at the bottom edge of the armrest body 30 to achieve convenient adjustment. High and low efficacy.

Based on the height adjustment structure, the utility model further sets the armrest body 30 into a structure that can be rotated and moved forward and backward. A feasible embodiment includes: a shell 25, a recessed space is formed above it, and in the center of the bottom plate 251 A transverse slot 252 is provided, and the transverse slot 252 is sleeved on the positioning seat 241 of the fixing plate 24, and the inner bottom plate 251 of the housing 25 is provided with two parallel clips 253, and the inside of the two clips 253 The opposite surface is provided with a plurality of longitudinal ribs 254; a base 26 is located between the two clips 253 of the casing 25, and a groove 261 and a through hole 262 are formed above it, and the upper surface of the groove 261 is provided with a plurality of transverse ribs. Convex rib 264, in addition its two outer surfaces are provided with a protruding arc 263 relative to protruding rib 254 of two clips 253; A pressing block 27 is arranged in the groove 261 of base 26, and its center forms a joint seat 272, and this The joint seat 272 passes through the through hole 262 of the base 26, and is sleeved on the positioning seat 241 of the fixed plate 24, and is fixed by a screw 271, and the concave hole 273 of the bottom surface of the front and rear ends of the pressing block 27 is sleeved There is a clamping body 274 (as shown in FIG. 7 ); an upper cover 28 locked on the top of the shell 25;

With the help of the structure of the armrest 20, the armrest body 30 can not only have the aforementioned function of being able to move up and down along with the hollow sleeve 22, but also, as shown in Figures 6 and 7, the shell 25 can be centered on the pressing block 27 to present a It can be rotated left and right to adjust an angle, that is, the pressing block 27 is fixed on the top of the fixed plate 24, but the base 26 is not locked, that is, the base 26 can be adjusted to the left and right angles with the housing 25, of course The upper cover 28 of the casing 25 and the armrest surface layer 29 are linked with the casing 25. When the casing 25 is adjusted in angle, the front and rear two pressing bodies 274 in the concave hole 273 of the bottom edge of the pressing block 27 are used as the grooves. The convex ribs 264 on the surface of 261 are used for mutual positioning. The clamping body 274 here can be an elastic clamping element, such as a push-up element with a steel ball head on the bottom edge and a spring inside. This is an existing component, so it will not be described again.

It can be seen from the aforementioned structure that the pressing block 27 is fixed, and the base 26 can be rotated left and right at an angle, but it will not be displaced forward and backward. Only the shell 25 can be rotated and displaced forward and backward. , so that it can slide back and forth on the positioning seat 241 of the fixed plate 24 (see FIG. 5 ), and when sliding back and forth, as shown in FIG. The convex arc 263 on the outside of the seat 26 can be used for positioning when the front and rear predetermined positions are reached.

Therefore, after the height of the armrest body 30 is adjusted, the utility model can further adjust its placement angle and front and rear position as shown in FIG. 8 , which has a three-dimensional adjustment effect.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (4)

1. the handrail of an office chair is adjusted structure, comprising: supporter, armrest body; It is characterized in that described supporter is vertical setting, its bottom is connected office chair pedestal one side, and epimere portion leading edge forms the spatial accommodation of a depression, and front face from top to bottom is provided with several continuously arranged recesses; One hollow sleeve, liftable being nested with in the supporter periphery, its opening periphery up forms the flange in conjunction with usefulness, and below flange forward direction be provided with perforation; One shank of the key, its upper end forms a drive-connecting shaft, can be hubbed on the interior position of hollow sleeve with respect to the supporter spatial accommodation, and its bottom is provided with embeddable convex body with respect to recess, be provided with a spring between the wall of shank of the key leading flank and hollow sleeve, make this shank of the key have elastic thrust towards recess, shank of the key extends one forward and passes the holding part that hollow sleeve is bored a hole at the drive-connecting shaft place; One fixed head is locked on the flange of hollow sleeve, and fixed head central authorities are provided with a positioning seat; Described armrest body is and is horizontally installed on hollow sleeve top, with the lifting of hollow sleeve interlock.

2. the handrail of office chair according to claim 1 is adjusted structure, it is characterized in that, described supporter outer peripheral edges are provided with above together C font cushion rubber.

3. the handrail of office chair according to claim 1 is adjusted structure, it is characterized in that, the holding part of described shank of the key is arranged with a button handle.

4. the handrail of office chair according to claim 1 is adjusted structure, it is characterized in that, described armrest body includes: a shell, its top forms a dented space, base plate central authorities are provided with a horizontal slotted eye, the transverse groove borehole jack is put on the fixed head positioning seat, and the shell inner bottom plating is provided with the parallel intermediate plate of twice, and the inboard opposite face of two intermediate plates is provided with the vertical fin of multiple tracks; One pedestal is located between shell twice intermediate plate, and its top forms a groove and a through hole, and the groove upper surface is provided with the horizontal fin of multiple tracks, and its two lateral surface is provided with a convex arc with respect to the fin place of two intermediate plates; One pressing block is arranged in the base recess, and its central authorities form a connecting support, and this connecting support passes the pedestal through hole, is nested with on the positioning seat of fixed head, and fixes by a screw, and be arranged with a fastening convex side in the shrinkage pool of bottom surface, pressing block front and back end; One loam cake, locking is above shell; One handrail top layer is fixed on cap surface.

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