CN101731869A - Lifting armrest - Google Patents

Abstract

The invention relates to a lifting armrest, which comprises a body, an armrest body and an adjusting device, wherein the first end of the body is combined with a seat, the second end of the body is provided with a positioning groove, a plurality of positioning parts which are longitudinally arranged in parallel are arranged in the positioning groove, the inner wall surface of the armrest body is convexly provided with two longitudinal clamping parts, the adjusting device comprises a combination body, a clamping piece and an elastic body, the combination body penetrates through the armrest body and is combined with the armrest body, the outer surface of the combination body forms two longitudinal abutting parts, the two abutting parts are just used for clamping the two clamping parts of the armrest body, the middle section of the clamping piece is pivoted on the combination body, the first end of the clamping piece is convexly provided with a notch of which a pressing part protrudes out of the armrest body, and the second end of the clamping piece is convexly provided with a.

Description

rising handrail

technical field

The invention relates to a handrail, in particular to a rising handrail with better structural strength.

Background technique

Please refer to Figure 11 for a schematic diagram of the traditional office chair armrest adjustment structure, including: the top of the hollow sleeve body 91 is combined with the armrest body 92, and the top of the hollow sleeve body 91 is pivotally connected with a lock handle 93, and the lock handle 93 selectively engages the support body 94. Selectively position the lock handle 93 on the support body 94 to further change the relative position of the hollow sleeve body 91 and the support body 94 to achieve the purpose of raising and lowering the armrest.

Wherein, the first end of the lock handle 93 is provided with a pivot shaft 931, the second end of the lock handle 93 is provided with a convex body 932, and the first end of the lock handle 93 forms a buckling portion 933, and the lock handle 93 is mounted on the pivot shaft 931. A spring 934 is also provided between the convex body 932 , the pivot shaft 931 is pivotally connected to the top of the hollow casing 91 , and the spring 934 is pushed against the inner wall of the hollow casing 91 .

There are deficiencies in the design of the previous technology, which need to be improved:

First, the first end of the lock handle 93 is pivotally connected to the hollow casing 91, and the second end is locked on the support body 94, and the lock handle 93 is pivoted by pulling the buckle part 933 at the first end of the lock handle 93, but , the pivot shaft 931 and the buckle part 933 of the lock handle 93 are located at the first end, and the balance of force cannot be achieved when the lock handle 93 is manipulated, and the lock handle 93 is pivotally connected to the top of the hollow casing 91 and there is also a lock handle 93 can't really drive the absence of hollow casing 91.

Second, the position of the spring 934 is located in the middle of the pivot shaft 931 and the convex body 932. In other words, the spring 934 is located at the middle section of the pivot shaft 931, and one end of the spring 934 is pushed against the lock handle 93, and the other end is pushed against the lock handle 93. On the inner wall of the hollow casing 91, the spring 934 has not been well set in fact. When the lock handle 93 is manipulated, the spring 934 is easy to break away from the original predetermined position, so that the lock handle 93 loses the effect of the automatic locking of the reset, and when When the spring 934 falls between the lock handle 93 and the hollow sleeve 91, it will hinder the function of the lock handle 93 to pivot in the hollow sleeve 91, further making the armrest lose the purpose of height adjustment.

Third, the lock handle 93 is only pivotally connected to the hollow sleeve body 91 through the pivot shaft 931. When the handrail operator presses down on the handrail body by reciprocating operation, the lock handle 93 and the hollow sleeve body 91 are subjected to the downward force for a long time, and the lock handle 93 The pivotal shaft 931 often breaks away from the hollow sleeve body 91, causing the armrest to be damaged and unusable.

There are many deficiencies in the design of the prior art, and there is indeed a need for improvement.

Contents of the invention

The main purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a rising handrail with better structural strength.

In order to achieve the above object, the present invention provides a rising armrest, which includes: a body, which includes a first end and a second end, the first end of the body is combined with the seat, and the second end of the body is provided with a positioning The positioning groove is provided with a plurality of positioning parts arranged in parallel in the longitudinal direction; a handrail body, a gap is provided on one side of the handrail body, and two longitudinal clamping parts are protruded from the inner wall of the handrail body; an adjustment The device includes a combined body and a locking member, the combined body extends through and is combined with the armrest body, one end of the combined body is a container, the container includes two side walls, and the container The outer surfaces of the two side walls respectively form a longitudinal abutment portion, and the two abutment portions provide the two clamping portions of the armrest body to be clamped, and the latching member includes a first end and a second end, and the latching member includes a first end and a second end. The middle part of the piece is pivotally connected to the combination body, the first end of the locking piece is protruded with a pressing part, and the pressing part protrudes from the gap of the armrest body, and the second end of the locking piece is protruded with a locking part. The locking part is selectively locked on the positioning part of the body.

The beneficial effects of the present invention are:

First, the rising armrest catch of the present invention is pivotally connected to the combined body at the middle section, so that the balance of force can be obtained when the catch member pivots, and by pressing the pressing part at the first end of the catch member, the second end of the catch member can be made The latching parts at the two ends are surely latched to the positioning part of the body, so as to obtain a better effect of surely driving the latching part to pivot.

Second, the elastic body of the rising handrail of the present invention is arranged at the first end of the engaging member, and the elastic body is limited between the first end of the engaging member and the combined body. When the engaging member is not manipulated, the elastic body elastically releases against the top When the latching piece and the combination are manipulated, the elastic body is pressed against the combination, and the elastic body is indeed limited between the locking piece and the combining body so that the elastic body does not fall off.

Thirdly, the sleeve body of the armrest body of the rising handrail of the present invention protrudes inside and is provided with two longitudinal clamping parts, and the combination body of the adjustment device is provided with two abutting parts in the longitudinal direction, and the sleeve body is sleeved on the combination body, and the clamping parts clamp the abutting parts. Even if the rising handrail is used for a long time, the combination of the adjustment device will not expand or the two side walls of the combination will be separated from the locking parts, further reducing the probability of damage to the rising handrail.

Description of drawings

Fig. 1 is the perspective view of the rising handrail of the present invention;

Fig. 2 is a three-dimensional exploded view of the first embodiment of the rising handrail of the present invention;

Fig. 3 is a three-dimensional exploded view of the first embodiment of the rising handrail of the present invention;

Fig. 4 is a schematic cross-sectional view of the first embodiment of the rising handrail of the present invention;

Fig. 5 is the sectional view that the present invention takes along the 5-5 sectional line of Fig. 4;

Fig. 6 is the sectional view that the present invention takes along the 6-6 section line of Fig. 4;

Fig. 7 is the continuation of Fig. 4 of the present invention, the schematic diagram of table control rising handrail;

Fig. 8 is a three-dimensional exploded view of the second embodiment of the rising handrail of the present invention;

Fig. 9 is a three-dimensional exploded view of the second embodiment of the rising handrail of the present invention;

Fig. 10 is a schematic cross-sectional view of the second embodiment of the rising handrail of the present invention;

Fig. 11 is a schematic diagram of a traditional armrest adjustment structure of an office chair.

Explanation of reference signs: 91-hollow sleeve body; 92-armrest body; 93-lock handle; 931-pivot shaft; 932-convex body; 933-holding part; 934-spring; ;11-positioning groove; 111-positioning part; 112-rib; 20-armrest body; 21-sleeve body; 211-tube part; 30-adjustment device; 31-combination body; 311-combination part; 312-receptacle; 313-side wall; 314-reaching part; Connecting part; 3211-incline; 322-convex part; 323-pressing part; 324-catch part; 325-groove; 33-elastic body; -Convex part; 343-Press part; 344-Catch part; 345-Groove; 316-Top; 40-Body; 41-Positioning slot; Stop surface; 4132-guide surface.

Detailed ways

The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings. Referring to Fig. 1, it is a three-dimensional appearance view of the rising handrail of the present invention. The rising armrest of the present invention includes a main body 10, an armrest body 20 and an adjustment device 30, the main body 10 includes a first end and a second end, the first end of the main body 10 is combined with the seat, the main body 10 The second end extends through the armrest body 20, and the armrest body 20 is combined with the adjustment device 30, the adjustment device 30 can be raised and lowered relative to the body 10, and the adjustment device 30 is selectively positioned on The body 10 further fixes the relative positions of the body 10 and the armrest body 20 .

Referring to FIG. 2 and FIG. 3 , it is a three-dimensional exploded view of the first embodiment of the rising handrail of the present invention. The first end and the second end of the body 10 form an L-shaped bent shape, and the second end of the body 10 is provided with a positioning groove 11, and the positioning groove 11 communicates with the second end of the body 10, and the positioning A plurality of positioning portions 111 arranged in parallel in the longitudinal direction are arranged in the slot 11 , and each row of positioning portions 111 is connected by a longitudinal rib 112 to further strengthen the structural strength of each positioning portion 111 .

The armrest body 20 includes a sleeve body 21 and an abutting member 22, the sleeve body 21 includes a first end and a second end, the first end of the sleeve body 21 is a cylindrical portion 211, and the sleeve body 21 The second end is a receiving portion 212, the receiving portion 212 is combined with the abutting member 22, a notch 213 is provided on one side of the cylindrical portion 211 and close to the receiving portion 212, the sleeve Two longitudinal clamping portions 214 protrude from the inner wall of the body 21 .

The adjustment device 30 includes a combination body 31 , a locking member 32 and an elastic body 33 . The combined body 31 is columnar, the combined body 31 includes a first end and a second end, the first end of the combined body 31 is a combined portion 311, and the combined body 31 extends into the cylindrical portion 211, And the combining portion 311 is combined with the receiving portion 212 . The second end of the combined body 31 is a container 312 , the container 312 includes two side walls 313 to form a penetrating shape, and the end of the container 312 connected with the combined portion 311 forms a contact portion 314 The middle sections of the two side walls 313 of the container 312 are respectively provided with a hole-shaped pivot portion 315, and the outer surfaces of the two side walls 313 of the container 312 respectively form a longitudinal abutment portion 316, the abutment The connecting portion 316 is in a concave shape, and the two abutting portions 316 just accommodate the two clamping portions 214 of the sleeve body 21, and the two clamping portions 214 clamp the abutment of the two side walls 313 of the container 312 Section 316.

The catch member 32 includes a first end and a second end, and two pivot joints 321 are provided at the middle section between the two ends of the draw catch member 32, and the pivot joints 321 form a protruding column shape, and the pivot joints 321 form a protruding column shape. An inclined surface 3211 is formed on the peripheral surface and the end of the connecting portion 321 . Through the design of the inclined surface 3211 , the pivoting portion 321 can easily pass through the pivoting portion 315 of the combined body 31 . A protrusion 322 is formed at the first end of the engaging member 32, and the protrusion 322 is perpendicular to the two pivot joints 321, and the protrusion 322 passes through the elastic body 33, and the elastic body 33 abuts against the contact portion 314 of the combined body 31 , and the contact portion 314 and the convex portion 322 prevent the elastic body 33 from falling off. A pressing portion 323 protrudes from a surface of the first end of the engaging member 32 that is different from the protruding portion 322 , and the pressing portion 323 protrudes from the notch 213 of the barrel portion 211 of the casing 21 . The second end of the latching member 32 protrudes from a row of latching portions 324, and the latching portion 324 is longitudinally provided with a groove 325, and the latching portion 324 is selectively latched on the positioning portion 111 of the body 10. , and the groove 325 forms a concavo-convex fit with the rib 112 .

Referring to FIG. 4 to FIG. 6 , they are schematic cross-sectional views of the first embodiment of the rising handrail of the present invention. The armrest body 20 is socketed between the main body 10 and the adjustment device 30 , the sleeve body 21 of the armrest body 20 is combined with the combination body 31 of the adjustment device 30 , and the pivot portion 315 of the combination body 31 It is pivotally connected with the pivotal portion 321 of the locking member 32 , and the cylinder body 211 of the sleeve body 21 of the armrest body 20 covers the combined body 31 of the body 10 and the adjusting device 30 and the locking member 32. The two clamping parts 214 on the inner wall of the cylinder body 211 just extend into the contact part 316 of the combination body 31, and the two clamping parts 214 further clamp the combination body 31. When the adjustment device 30 When the combined body 31 bears the downward force of the handrail body 20 for a long time, it can definitely avoid the loss of outward expansion and deformation of the two side walls 313 of the combined body 31 having the cavity 312 .

The locking part 32 is pivotally connected to the pivot part 315 of the combination body 31 by the pivotal part 321 in the middle section, and the first end of the locking part 32 is provided with the elastic body 33, and the elastic body 33 abuts against Connected to the contact portion 314 of the combination body 31 , the locking portion 324 at the second end of the locking member 32 is locked to the positioning portion 111 of the main body 10 . The middle section of the locking member 32 is used as a fulcrum, and the elastic body 33 and the locking part 324 at both ends are like two ends of a seesaw, so that the locking member 32 can have a balanced effect, and no end will bear light weight. The weight on the other end bears the absence of the heavier weight.

The locking part 324 of the locking part 32 is locked on the positioning part 111 of the body 10, and the groove 325 of the locking part 32 is sleeved on the rib 112 of the body, so that the locking part 32 It has the function of positive concave-convex positioning with the main body 10 .

Referring to FIG. 7 , it is a schematic diagram of adjusting the height of the rising armrest of the present invention. The operator presses the pressing part 323 of the locking part 32 of the adjustment device 30, the first end of the locking part 32 presses the elastic body 33, and the locking part 32 is connected to the pivot part 321 (not shown in the figure) Generate a pivot for the fulcrum, so that the locking part 324 at the second end of the locking member 32 is separated from the positioning part 111 of the main body 10, and the operator can drive the armrest body 20 and the adjustment device 30 relative to the main body 10 Moving up and down, when the armrest body 20 and the adjusting device 30 are adjusted to a proper position, the operator releases the pressing part 323, the elastic body 33 is elastically released, and the locking member 32 pivots, so The engaging portion 324 is engaged with the positioning portion 111 of the main body 10 to achieve the effect of positioning the adjusting device 30 on the main body 10 .

Referring to FIG. 8 to FIG. 10 , it is a three-dimensional exploded view and a schematic cross-sectional view of the second embodiment of the rising handrail of the present invention. The difference between the second embodiment and the first embodiment lies only in the body 40 and the engaging member 34 , other components are the same as the first embodiment. The body 40 includes a first end and a second end, and the first end and the second end of the body 40 form an L-shaped bent shape. The first end of the body 40 can be combined with the seat, the second end of the body 40 is provided with a positioning groove 41, the positioning groove 41 communicates with the second end of the body 40, and the positioning groove 41 is provided with A plurality of positioning portions 411 are arranged in parallel in the longitudinal direction, and each row of positioning portions 411 is connected by a longitudinal rib 412 to further strengthen the structural strength of each positioning portion 411 . The difference between the body 40 of the second embodiment and the first embodiment is that the position of the rib 412 corresponding to each row of the positioning portion 411 protrudes a stopper 413 respectively, and the stopper 413 includes a straight stop surface 4131 and an arc-shaped guiding surface 4132 .

The latching member 34 includes a first end and a second end, and the middle section between the two ends of the latching member 34 is provided with two pivotal joints 341, the pivotal joints 341 form a protruding column, and the pivotal joints 341 form a protruding column. An inclined surface 3411 is formed on the peripheral surface and the end of the connecting portion 341 . Through the design of the inclined surface 3411 , the pivoting portion 341 can easily pass through the pivoting portion 315 of the combined body 31 . A protrusion 342 is formed at the first end of the engaging member 34, and the protrusion 342 is perpendicular to the two pivot joints 341, and the protrusion 342 passes through the elastic body 33, and the elastic body 33 abuts against the abutting portion 314 of the combined body 31 . A pressing portion 343 protrudes from a surface of the first end of the engaging member 34 that is different from the protruding portion 342 , and the pressing portion 343 protrudes from the notch 213 of the barrel portion 211 of the casing 21 . The second end of the locking member 34 is protrudingly provided with two rows of locking parts 344, and the two rows of locking parts 344 are longitudinally provided with a groove 345, and the groove 345 corresponds to the locking at the end of the locking member 34. The portion 344 is also provided with an abutment top 346, the two rows of engaging portions 344 are selectively latched on the positioning portion 411 of the body 40, and the groove 345 forms a concave-convex fit with the rib 412, and the abutment portion 346 And selectively abut against the blocking portion 413 of the body 40 . When the adjusting device 30 of the rising armrest moves downward, the operator presses the pressing portion 343 of the locking member 34, and the abutment portion 346 of the locking member 34 is along the guiding surface 4132 of the blocking portion 413 of the body 40 And move downwards, so that the rising handrail can be adjusted smoothly when it is adjusted and lowered. When it is adjusted to a suitable position, the pressing part 343 can be released to make the abutting top 346 abut against the stop of the stop part 413 surface 4131, and the engaging portion 344 is engaged with the positioning portion 411 to achieve positioning.

Can conclude that the present invention has the following advantages with regard to the above:

1. In the rising handrail of the present invention, the catch member is pivotally connected to the combined body at the middle section, so that the force balance can be obtained when the catch member pivots, and by pressing the pressing part at the first end of the catch member, the second end of the catch member can be made The latching parts at the two ends are surely latched to the positioning part of the body, so as to obtain a better effect of surely driving the latching part to pivot.

2. In the rising handrail of the present invention, the elastic body is arranged at the first end of the engaging member, and the elastic body is limited between the first end of the engaging member and the combined body. When the engaging member is not manipulated, the elastic body elastically releases to push against the top When the latching piece and the combination are manipulated, the elastic body is pressed against the combination, and the elastic body is indeed limited between the locking piece and the combining body so that the elastic body does not fall off.

3. In the rising handrail of the present invention, the sleeve body of the handrail body is convexly provided with two longitudinal clamping parts, and the combination of the adjustment device is provided with two abutting parts in the longitudinal direction. Even if the lifting armrest is used for a long time, the combination of the adjustment device will not expand or the two side walls of the combination will be separated from the locking parts, further reducing the probability of damage to the armrest.

The above description is only illustrative, rather than restrictive, to the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection scope of the present invention.

Claims (10)

1. A rising handrail, characterized in that it comprises: A body, which includes a first end and a second end, the first end of the body is combined with the seat, the second end of the body is provided with a positioning groove, and a plurality of positioning parts arranged in parallel in the longitudinal direction are arranged in the positioning groove ; An armrest body, one side of the armrest body is provided with a gap, and the inner wall surface of the armrest body is protrudingly provided with two longitudinal clamping parts; An adjustment device, which includes a combined body and a locking member, the combined body extends through and is combined with the armrest body, one end of the combined body is a container, the container includes two side walls, the The outer surfaces of the two side walls of the container respectively form a longitudinal abutment portion, and the two abutment portions provide the two pinching portions of the armrest body to pinch, and the locking member includes a first end and a second end, and the The middle section of the locking member is pivotally connected to the combined body, the first end of the locking member is protruded with a pressing portion, and the pressing portion protrudes from the notch of the armrest body, and the second end of the locking member is protruded. There is a locking part, and the locking part is selectively locked on the positioning part of the body. 2. The rising handrail according to claim 1, characterized in that, the positioning parts of each row of the body are connected by a longitudinal rib to strengthen the structural strength of each positioning part, and the locking part is provided with a groove longitudinally grooves, and the grooves form concave-convex fits with the ribs. 3. The rising handrail according to claim 2, characterized in that, the position of the rib corresponding to each row of positioning parts protrudes a stop part, and the groove of the locking part corresponds to the locking part at the end of the locking part. The catch portion is provided with a top portion, and the top portion selectively abuts against the blocking portion of the body, and the blocking portion includes a straight blocking surface and an arc-shaped guiding surface, and the guiding surface provides The abutting portion of the locking member moves downwards, so that the abutting portion abuts against the blocking surface of the blocking portion. 4. The rising handrail according to any one of claims 1 to 3, wherein the adjusting device further comprises an elastic body, the elastic body is arranged between the first end of the locking member and the between the combination. 5 . The rising handrail according to claim 4 , wherein the combination body groove forms a resisting portion, and the first end of the locking member forms a convex portion on a surface opposite to the pressing portion, and the The contact portion and the convex portion restrict the elastic body from falling off. 6. The rising handrail according to claim 4, characterized in that, the two side walls at the middle section of the combined body are respectively provided with a pivot portion, and the middle section of the locking member is provided with two pivot joints, the pivot The part is pivotally connected with the pivot part. 7. The rising handrail according to claim 6, characterized in that, the pivot portion is in the shape of a hole, the pivot portion is formed into a protruding column, and the two are in a concave-convex fit, the peripheral surface of the pivot portion and the end The portion forms an inclined surface, and the design of the inclined surface makes it easy for the pivot joint to pass through the pivot portion of the combined body. 8. The rising handrail according to claim 1, wherein the first end and the second end of the body form an L-shaped bent shape, and the positioning groove of the body communicates with the second end of the body. 9. The rising handrail according to claim 1, characterized in that, the handrail body comprises a sleeve body and a rest member, the sleeve body includes a first end and a second end, and the sleeve body first end It is a cylindrical part, and the second end of the sleeve is a receiving part, and the receiving part is combined with the abutting part, and the receiving part is combined with the combined body. 10 . The rising handrail according to claim 1 , wherein the pinching portion is in a convex shape, and the abutting portion is in a concave shape. 11 .

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