Armrest structure for a chair

Abstract

The utility model relates to a chair armrest structure, mainly is equipped with a group of vertical holes on the upper end cover plate of armrest support, correspondingly sets up with the knob set on the bottom surface of armrest cushion, thereby, when assembling, rotates armrest cushion by an angle, makes the two protrusions set on the knob on armrest cushion respectively with the two recesses in the vertical hole clamping resistance positioning, and makes the side of a protrusion on the knob and the tenon of a clamping tenon mutually clamping, to complete the assembly of armrest support and armrest cushion, furthermore, when the assembly of armrest cushion and armrest support is to be removed, only needs to make a bolt by the channel on the side of cover plate and insert in the inclined plane set on the clamping tenon, and along the guide of inclined plane makes the tenon of clamping tenon separate with the clamping of a protrusion on the knob, then reversely rotates armrest cushion by an angle, makes its knob separate from the vertical hole on armrest support, accordingly, reaches the effect that armrest cushion and armrest support are quickly assembled and disassembled.

Description

TECHNICAL FIELD

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

[0002] In order to improve the comfort of sitting, most of the existing chairs are provided with armrests on both sides of the seat to support the hands of the user, so as to reduce the gravity of the arm drop on the shoulder and avoid the shoulder and neck pain when sitting for a long time.

[0003] The existing chair armrest structure usually includes an armrest support for assembling with the seat, and an armrest cushion connected with the armrest support to provide a place for the user's elbow. Since the armrest support and the armrest cushion of the existing chair armrest are integrally formed, when one of them is damaged, the entire armrest must be replaced, which not only increases the maintenance cost, but also wastes material resources and does not meet the environmental protection benefits. Moreover, since the armrest cushion and the armrest support are integrally formed, the armrest cushion and the armrest support are also made of hard plastic, and the user's elbow is easy to be painful and uncomfortable when placed on the hard armrest cushion for a long time. In addition, the shape of the integrally formed armrest support and armrest cushion is limited, which cannot meet the needs of consumers who like novelty and beautiful shapes, thereby affecting the market competitiveness.

[0004] Therefore, the present inventors have considered the above-mentioned problems in the manufacture and use of the existing chair armrest, and have developed the present utility model with the aid of their many years of experience and knowledge in the relevant field. UTILITY MODEL CONTENTS

[0005] The utility model relates to a chair armrest structure, which can detachably assemble the armrest support and the armrest cushion, thereby saving maintenance costs and improving market competitiveness.

[0006] In order to achieve the above-mentioned implementation purposes, the utility model provides a chair armrest structure, which includes:

[0007] A handrail support, a cover plate is fixedly arranged at the upper end of the handrail support, a plurality of stand holes are arranged on the cover plate, a gap is formed on the opposite sides of the stand holes, a groove is formed on the opposite sides of the hole wall adjacent to the bottom edge of the stand holes, the two grooves are arranged in a staggered manner with the two gaps, one side of the two grooves is connected with one side of the two gaps, a container groove is arranged on the cover plate, a clamping block and an elastic element are arranged in the container groove, the two ends of the elastic element are abutted with the clamping block and the groove wall of the container groove, a through hole is arranged at one end of the container groove, the through hole is communicated with one of the grooves, the tenon of the clamping block can be protruded into the groove through the through hole of the container groove, a channel is arranged on one side of the cover plate, the channel is communicated with the container groove, a slope is arranged on one side of the clamping block, the slope is corresponding to the channel, an insertion hole is arranged on one side of the handrail support, the insertion hole is corresponding to the channel.

[0008] A handrail cushion, a knob is arranged on the bottom surface of the handrail cushion, a protrusion is formed on the opposite sides of the knob, the knob and the protrusions on the opposite sides are corresponding to the shape of the stand holes and the gaps on the opposite sides of the handrail support, and are arranged in the stand holes and the gaps on the opposite sides, the two protrusions on the knob are abutted with the two grooves in the stand holes, and are positioned or separated, one side of the protrusion on the knob is abutted with the tenon of the clamping block, and is positioned or separated.

[0009] The chair handrail structure as described above, wherein a guide part is formed on the end of the tenon of the clamping block.

[0010] The chair handrail structure as described above, wherein the chair handrail structure further comprises a plug pin, the plug pin is inserted into the channel of the cover plate through the insertion hole arranged on one side of the handrail support, and is abutted with the slope arranged on one side of the clamping block.

[0011] Therefore, when assembled, the knob arranged on the handrail cushion is arranged in the stand holes on the handrail support, then the handrail cushion and the knob thereon are rotated by an angle, so that the two protrusions arranged on the knob are abutted with the two grooves in the stand holes, and one side of the protrusion on the knob is abutted with the tenon of the clamping block, so as to complete the assembly of the handrail support and the handrail cushion, and when the handrail cushion and the handrail support are disassembled, the plug pin is inserted into the slope arranged on the clamping block through the channel on one side of the cover plate, and the tenon of the clamping block is separated from the protrusion on the knob along the guide of the slope, then the handrail cushion is reversely rotated by an angle, so that the knob is separated from the stand holes on the handrail support, thereby achieving the effect of quickly assembling and disassembling the handrail cushion and the handrail support. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the utility model;

[0013] Figure 2 is another exploded view of the utility model;

[0014] Figure 3 is a first assembled implementation state diagram of the utility model;

[0015] Figure 4 is a second assembled implementation state diagram of the utility model;

[0016] Figure 5 is a third assembled implementation state diagram of the utility model;

[0017] Figure 6 is a first disassembled implementation state diagram of the utility model;

[0018] Figure 7 is a second disassembled implementation state diagram of the utility model;

[0019] Figure 8 is a third disassembled implementation state diagram of the utility model.

[0020] BRIEF DESCRIPTION OF DRAWINGS:

[0021] 1, armrest support; 11, cover plate; 12, screw; 13, assembly hole; 131, notch; 132, groove; 14, container groove; 141, through hole; 15, tenon; 151, tenon; 152, guide part; 153, inclined surface; 16, elastic member; 17, passage; 18, insertion hole;

[0022] 2, armrest cushion; 21, knob; 211, protrusion;

[0023] 3, bolt. DETAILED DESCRIPTION

[0024] In order to make the technical means of the utility model and the technical effects that can be achieved more complete and clear, please refer to the drawings and the reference signs, and the detailed description is as follows:

[0025] First, please refer to Figure 1 and Figure 2 , which is the armrest structure of the chair of the utility model, mainly comprising:

[0026] A handrail support 1, a cover plate 11 is arranged at the upper end of the handrail support 1, the cover plate 11 is locked on the upper end of the handrail support 1 by a plurality of screws 12, and a set of stand holes 13 is arranged at the center of the cover plate 11, a notch 131 is formed on the opposite sides of the set of stand holes 13 respectively, and a recess 132 is formed on the opposite sides of the hole wall adjacent to the bottom edge of the set of stand holes 13 respectively, the two recesses 132 are arranged in staggered manner with the two notches 131, and one side of the two recesses 132 is connected with one side of the two notches 131 respectively, a container groove 14 is arranged on the cover plate 11, a clamping block 15 and a resilient member 16 are arranged in the container groove 14, the two ends of the resilient member 16 are abutted with the clamping block 15 and the groove wall of the container groove 14 respectively, a through hole 141 is arranged at one end of the container groove 14, the through hole 141 is communicated with one of the recesses 132, the tenon 151 of the clamping block 15 can be movably protruded into the recess 132 through the through hole 141 of the container groove 14, a guide part 152 is formed on the end of the tenon 151 of the clamping block 15, the guide part 152 can be in the shape of bevel, taper or arc, a passage 17 is arranged on one side of the cover plate 11, the passage 17 is communicated with the container groove 14, and an inclined surface 153 is arranged on one side of the clamping block 15, the inclined surface 153 corresponds to the position of the passage 17, an insertion hole 18 is arranged on one side of the handrail support 1, the insertion hole 18 corresponds to the position of the passage 17.

[0027] A handrail cushion 2, a knob 21 is arranged at the center of the bottom surface of the handrail cushion 2, and a protrusion 211 is formed on the opposite sides of the knob 21 respectively, the knob 21 and the protrusions 211 on the opposite sides thereof correspond to the shape of the set of stand holes 13 and the notches 131 on the opposite sides thereof, so that the knob 21 and the protrusions 211 on the opposite sides thereof are arranged in the set of stand holes 13 and the notches 131 on the opposite sides thereof respectively, the two protrusions 211 on the knob 21 are movably clamped and positioned or separated with the two recesses 132 in the set of stand holes 13 respectively, and one side of one of the protrusions 211 on the knob 21 is movably clamped and positioned or separated with the tenon 151 of the clamping block 15 protruding into one of the recesses 132.

[0028] Accordingly, when assembled and used, please refer to Figure 3 , the handrail cushion 2 is placed on the upper end of the handrail support 1, and the knob 21 and the protrusions 211 on the opposite sides thereof arranged on the bottom surface of the handrail cushion 2 are inserted downward to the bottom edge of the set of stand holes 13 through the set of stand holes 13 and the notches 131 on the opposite sides thereof of the handrail support 1, please refer to Figure 4As shown, the armrest back cushion 2 is rotated counterclockwise by a certain angle, at this time, a protrusion 211 on the knob 21 of the armrest back cushion 2 is guided along the inclined surface of the guide portion 152 of the tenon head 151 of the dowel 15, and the dowel 15 is pushed to the direction of the elastic member 16 in the accommodating groove 14 to compress the elastic member 16, and the tenon head 151 of the dowel 15 is withdrawn from the groove 132, and the two protrusions 211 on the knob 21 are respectively rotated and moved to the two grooves 132 in the assembly hole 13 from the two side notches 131 of the assembly hole 13 to be positioned against the two grooves 132, please see Figure 5 As shown, the tenon head 151 of the dowel 15 loses the resistance of the protrusion 211 on the knob 21, and the compressed elastic member 16 can recover to its original state to push the tenon head 151 of the dowel 15 into the groove 132 again, and the protrusion 211 on the knob 21 is positioned against the side of the tenon head 151 of the dowel 15, thereby, the assembly of the armrest back cushion 2 and the armrest support 1 is completed simply.

[0029] Furthermore, when the chair armrest of the utility model is used for a period of time, the armrest back cushion 2 is damaged, etc., please see Figure 6 As shown, the user can take a plug pin 3, and insert the plug pin 3 into the channel 17 of the cover plate 11 from the insertion hole 18 on one side of the armrest support 1, and abut against the inclined surface 153 of the dowel 15, and the continuous insertion of the plug pin 3 will guide along the inclined surface 153 of the dowel 15 to push the dowel 15 to the direction of the elastic member 16 in the accommodating groove 14 to compress the elastic member 16, and the tenon head 151 of the dowel 15 is separated from the knob 21, please see Figure 7 As shown, the user can rotate the armrest back cushion 2 clockwise by a certain angle to make the two protrusions 211 on the knob 21 on the bottom surface of the armrest back cushion 2 respectively rotate and move to the two side notches 131 of the assembly hole 13 from the two grooves 132 in the assembly hole 13 of the cover plate 11 (as shown), Figure 8 As shown, the user can then pull the armrest back cushion 2 upward to make the knob 21 on the bottom surface of the armrest back cushion 2 separated from the assembly hole 13 of the armrest support 1, and the armrest back cushion 2 and the armrest support 1 are separated simply.

[0030] Then, the user can put the knob 21 on the bottom surface of a new armrest back cushion 2 in the assembly hole 13 of the armrest support 1, and rotate the armrest back cushion 2 by a certain angle to make the two protrusions 211 on the two sides of the knob 21 respectively positioned against the two grooves 132 in the assembly hole 13, and the tenon head 151 of the dowel 15 is positioned against the side of the protrusion 211 on the knob 21, thereby, the maintenance work of the armrest back cushion 2 is completed simply.

[0031] When the armrest back cushion 2 is damaged, the damaged armrest back cushion 2 can be conveniently detached from the armrest support 1, and a new armrest back cushion 2 is quickly installed on the armrest support 1, without the need to remove and replace the armrest support 1. Similarly, when the armrest support 1 is damaged, only the armrest support 1 needs to be removed and replaced, without the need to discard the armrest back cushion 2. Thus, the maintenance cost of the chair armrest is greatly saved, and the improper waste of material resources is avoided, which is in line with the environmental protection benefits. Furthermore, since the armrest back cushion 2 and the armrest support 1 are manufactured separately, the armrest back cushion 2 can be made of soft and elastic material to provide comfort when the user's elbow is placed on the armrest back cushion 2. In addition, when one of the armrest back cushion 2 or the armrest support 1 needs to be changed in shape, only one part of the armrest back cushion 2 or the armrest support 1 needs to be separately manufactured, which facilitates the saving of armrest manufacturing cost. When the consumer wants to change the shape of the chair armrest, he or she can choose to replace only one of the armrest back cushion 2 or the armrest support 1, or can choose to use different colors for the armrest back cushion 2 and the armrest support 1. Thus, the flexible assembly design improves the variety of armrest shapes, attracts consumers to purchase, and improves the competitiveness of the chair armrest industry.

[0032] The foregoing embodiments or drawings do not limit the embodiments of the present application, and appropriate changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present application.

[0033] From the above structure and embodiments, the present application has the following advantages:

[0034] 1. The chair armrest structure of the present application separates the armrest support 1 and the armrest back cushion 2, and quickly assembles and disassembles the armrest support 1 and the armrest back cushion 2 by clamping. When one of the armrest back cushion 2 or the armrest support 1 is damaged, the damaged armrest back cushion 2 or the armrest support 1 can be conveniently removed and replaced, without the need to discard the entire armrest. Thus, the maintenance cost of the chair armrest is effectively saved, and the improper waste of material resources is avoided, which is in line with the environmental protection benefits.

[0035] 2. The chair armrest structure of the present application separates the manufacture of the armrest support 1 and the armrest back cushion 2, so that the armrest back cushion 2 can be made of soft and elastic material to provide comfort when the user's elbow is placed on the armrest back cushion 2.

[0036] 3. The chair armrest structure of the present application separates the manufacture of the armrest support 1 and the armrest back cushion 2. When one of the armrest back cushion 2 or the armrest support 1 needs to be changed in shape, only one part of the armrest back cushion 2 or the armrest support 1 needs to be separately manufactured, which saves the manufacturing cost of the armrest. In addition, the armrest back cushion 2 and the armrest support 1 can be used in different colors, which further improves the variety of armrest shapes, and improves the competitiveness of the chair armrest industry.

Claims

1. A chair arm structure, characterized by, The application relates to a chair armrest structure, which comprises: a chair armrest support, the upper end of the armrest support being fixedly provided with a cover plate, a group of vertical holes being arranged on the cover plate, notches being formed on the opposite sides of the group of vertical holes respectively, recesses being formed on the opposite sides of the hole walls adjacent to the bottom edges of the group of vertical holes respectively, the two recesses being arranged in a staggered mode with the two notches, one side of each of the two recesses being connected with one side of each of the two notches respectively, a containing groove being arranged on the cover plate, a clamping tenon and an elastic piece being arranged in the containing groove, the two ends of the elastic piece being abutted with the clamping tenon and the groove wall of the containing groove respectively, one end of the containing groove being provided with a through hole, the through hole being communicated with one of the recesses, the tenon head of the clamping tenon being movably protruded into the recess through the through hole of the containing groove, one side of the cover plate being provided with a channel, the channel being communicated with the containing groove, one side of the clamping tenon being provided with an inclined surface, the position of the inclined surface being corresponding to the position of the channel, one side of the armrest support being provided with an insertion hole, the position of the insertion hole being corresponding to the position of the channel; a chair armrest cushion, the bottom surface of the armrest cushion being provided with a rotary knob, protrusions being formed on the opposite sides of the rotary knob respectively, the rotary knob and the protrusions on the opposite sides of the rotary knob being corresponding to the shapes of the group of vertical holes of the armrest support and the notches on the opposite sides of the group of vertical holes, so that the rotary knob is arranged in the group of vertical holes and the notches on the opposite sides of the group of vertical holes correspondingly, the two protrusions on the rotary knob being movably clamped and positioned or separated from the two recesses in the group of vertical holes respectively, one side of one of the protrusions on the rotary knob being movably clamped and positioned or separated from the tenon head of the clamping tenon.

2. The armrest structure for a chair according to claim 1, wherein A guide part is formed on the end of the tenon head of the clamping tenon.

3. The chair arm structure of claim 1, wherein The chair armrest structure further comprises a plug pin, the plug pin being inserted into the channel of the cover plate from the insertion hole arranged on one side of the armrest support, and abutting with the inclined surface arranged on one side of the clamping tenon.

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