TWI764839B - Handrail lifting adjustment structure - Google Patents

Abstract

The present invention provides a lifting adjustment structure for a handrail, which comprises: a handrail main body, a lifting core, a lifting shell, and a locking group. The lifting core includes a first limiting portion and a second limiting portion, and the locking group includes a first limiting portion. A limiting groove and a second limiting groove, the first body segment is located in the first limiting groove, the second body segment is located in the second limiting groove, and the first limiting groove and the second limiting groove can receive the first limiting groove. The guide of the first limit part and the second limit part enables the locking group to rise and fall smoothly during the operation process. With such a structure, even if the operating part is still eccentrically designed, the main body of the switch can still be relative to the main body of the core. The smooth lifting has indeed improved the problem that the occupants could not operate the lifting switch smoothly in the past.

Description

Handrail lifting adjustment structure

The present invention relates to an armrest of a seat, which can adjust the height of the armrest according to the needs of the occupant by lifting and lowering.

Sitting posture is a very harmful posture for the human spine. However, in order to facilitate office work, sitting posture can be said to be an unavoidable posture. Therefore, many people have begun to study which sitting posture is less burdensome for the human body, and some studies have pointed out that using Compared with sitting directly on the ground, the seat can make the human body more comfortable when in a sitting position, and the burden on the body is smaller. With the progress of science, people are more strict in the design of the seat, and begin to pursue The ergonomic design makes the seat have many adjustable parts, among which the liftable armrest is a very important design. The appropriate armrest height can make the occupant's arm rest easily, thereby reducing the occupant's difficulty in maintaining the correct sitting posture. difficulty.

Generally speaking, there is a lift switch on the lift armrest, and the lift switch can be adjusted continuously by pressing the lift switch. It can be seen that the structure design of the lift switch is very important. A good structure design can make the operation of the lift switch smoother and reduce the operation The force required by the lift switch can not only prolong the life of the product, but also facilitate fine-tuning during the lifting process. However, most of the handrails on the market have problems in the design of the lift switch. For example, Taiwan Lihao No. I710342 "lifting armrest", from the second picture, we can see that the design position of the pressing part of the lift switch is obviously deviated from The sliding position of the lift switch when it goes up and down, so that in actual use, during the process of operating the pressing part, the lift switch is easily deflected relative to the lift group, and it cannot go straight up and down smoothly, so that the occupant cannot operate the lift switch smoothly.

The main body portion of the switch of the present invention has a first limiting groove and a second limiting groove. During the process of raising and lowering relative to the core body portion, the first limiting groove and the second limiting groove can be affected by the first limiting portion and the second limiting groove. Guided by the limiting portion, it rises and falls smoothly. With this structure, even if the operating portion is still eccentrically designed, the switch body portion can still move up and down smoothly relative to the core body portion, which indeed improves the conventional problem.

In order to achieve the above objects and effects, the present invention provides a lifting adjustment structure for an armrest, which includes: an armrest main body, which has a seat connecting part, the seat connecting part is bent upward and connected to a supporting part, and the supporting part has a accommodating part. an accommodating space, the top end of the support part has an opening communicating with the accommodating space; a lifting core has a core connecting part, the lower end of the core connecting part is connected with a core main body part, and the core main body part is movably located in the accommodating space , the core body part has a core chute, the core body part extends a first limit part and a second limit part, the first limit part and the second limit part are respectively located in the core chute And it is arranged up and down, the first limiting part has a connected first head section and a first body section, the first body section is connected to the core main body part, and the width of the first head section is wider than the width of the first body section. width, the second limiting portion has a second head section and a second body section connected to each other, the second body section is connected to the core main body, and the width of the second head section is wider than the width of the second body section; a The lifting shell has a shell connecting part, the lower end of the shell connecting part is connected with a shell body part, the shell body part surrounds the peripheral side of the support part, and the shell connecting part is connected with the core connecting part; a locking group, which includes There is an operation switch, the operation switch has a switch main body part and an operation part connected, the switch main body part is located in the core chute, the switch main body part has a first limit groove, a second limit groove, the The first body segment is located in the first limiting groove, the second body segment is located in the second limiting groove, and the first limiting groove has a first wide groove segment and a first narrow groove segment connected to each other. The width of the segment cannot pass through the first narrow groove segment, the second confinement groove has a connected second wide groove segment and a second narrow groove segment, and the width of the second head segment cannot pass through the second narrow groove segment , the locking group can be locked and unlocked by operating the operation switch. When the locking group is locked, the lifting core and the lifting shell cannot be lifted and lowered relative to the support portion. When the locking group is unlocked, the lifting core and the lifting shell It can be lifted and lowered relative to the support part; and a hand cushion is arranged on the shell connection part.

In order to understand the embodiments of the present invention in more detail, please refer to the drawings. As shown in the first to eighth drawings, the present invention is an armrest lifting adjustment structure, which includes: an armrest main body 1, which has a seat The connecting part 11, the seat connecting part 11 is bent upward and connected to a supporting part 12, the supporting part 12 has an accommodating space 121, the top of the supporting part 12 has an opening 122 connected to the accommodating space 121; a lifting core 2. It has a core connecting part 21, the lower end of the core connecting part 21 is connected with a core main body part 22, the core main body part 22 is movably located in the accommodating space 121, the core main body part 22 has a core sliding groove 221, the The core body portion 22 extends with a first limiting portion 23 and a second limiting portion 24. The first limiting portion 23 and the second limiting portion 24 are respectively located in the core chute 221 and are arranged up and down. The first limiting portion 23 has a first head section 231 and a first body section 233 connected to each other. The first body section 233 is connected to the core main body 22 , and the width of the first head section 231 is wider than that of the first body section 233 . The second limiting portion 24 has a connected second head section 241 and a second body section 242, the second body section 242 is connected to the core body 22, and the width of the second head section 241 is wider than the width of the second head section 241. The width of the second body section 242; a lifting shell 3, which has a shell connecting part 31, the lower end of the shell connecting part 31 is connected with a shell main body part 32, the shell main body part 32 surrounds the peripheral side of the supporting part 12, and the shell connecting part 32 Part 31 is connected to the core connecting part 21; a locking group 4, which includes an operating switch 5, the operating switch 5 has a connected switch body part 52, an operating part 51, the switch body part 52 is located in the core chute 221, the switch main body 52 has a first limit groove 521 and a second limit groove 522, the first body 233 is located in the first limit groove 521, and the second body 242 is located in the second limit The groove 522, the first limiting groove 521 has a first wide groove section 5211 and a first narrow groove section 5212, the width of the first head section 231 cannot pass through the first narrow groove section 5212, the second The limiting groove 522 has a second wide groove section 5221 and a second narrow groove section 5222 connected thereto. The width of the second head section 241 cannot pass through the second narrow groove section 5222, and the locking group 4 can operate the The operation switch 5 is locked and unlocked. When the locking group 4 is locked, the lifting core 2 and the lifting shell 3 cannot be lifted and lowered relative to the support portion 12. When the locking group 4 is unlocked, the lifting core 2 and the lifting shell 3 can be lifted and lowered. Relative to the support part 12;

Continuing the above, the embodiment of the present invention will be described in detail. The seat connecting portion 11 of the armrest body 1 is used to connect with the seat, and the handrest 8 is used to provide the occupant's arm against which to rest. As shown in the four figures, it can be clearly seen that the first limiting groove 521 and the second limiting groove 522 are respectively sleeved on the first limiting portion 23 arranged up and down by the first narrow groove section 5212 and the second narrow groove section 5222 2. The second limiting portion 24 is continued as shown in the fifth to sixth figures. In order to unlock the locking group 4, an upward force must be exerted on the operating portion 51, so that the main body portion 52 of the switch connected to it will rise to achieve the locking effect. The purpose of unlocking the group 4, and because the first limiting portion 23 and the second limiting portion 24 guide the first limiting groove 521 and the second limiting groove 522, even though the operation portion 51 in this embodiment is conventional The product is generally eccentric, and the operation switch 5 is difficult to tilt relative to the lifting core 2 during the lifting process, which can keep the lifting process smooth. It can be seen that the present invention has indeed improved the conventional problem.

As shown in Figures 2 to 8, one side of the support portion 12 is provided with a plurality of positioning holes 123 arranged up and down, the plurality of positioning holes 123 communicate with the accommodating space 121, and the plurality of positioning holes 123 are adjacent to each other. A guide groove 124 is connected between the positioning holes 123. The locking group 4 includes a plug 6 and the operation switch 5. The plug 6 has a plug main body 61, and the lower section of the switch main body 52 is provided with a guide structure 53. , the plug 6 is disposed on the aforementioned guide structure 53 with a plug body 61 , and a guide protrusion 62 extends from the side of the plug body 61 away from the guide structure 53 , when the operation switch 5 is operated, the switch body part 52 moves up and down in the core chute 221 and drives the plug 6 to expand and contract relative to the corresponding positioning hole 123 by the guide structure 53 (the principle of the guide structure 53 to drive the plug 6 to expand and contract, please refer to the prior art), the locking When the group 4 is locked, the plug 6 is inserted into the corresponding positioning hole 123. When the locking group 4 is unlocked, the bolt body 61 is not inserted into the plurality of positioning holes 123, and the guiding protrusion 62 is located in the corresponding guiding groove 124 or In the corresponding positioning hole 123 , the bottom surface of the guide protrusion 62 is inclined downward from the extension end to the direction of the bolt body 61 . The advantage of this structure is that even if the locking group 4 is in the unlocked state, the guide protrusion 62 will operate according to the operation. The lifting position of the switch 5 is located in the positioning hole 123 (the sixth figure) or the guide groove 124 (the eighth figure), and whenever the guide protrusion 62 passes through the guide groove 124, it can guide the lifting trajectory of the operation switch 5. , to further improve the smoothness of the operation switch 5 during the lifting and lowering process.

As shown in Figures 2 to 8, the switch main body 52 extends an extension table 54, the extension table 54 corresponds to the first head section 231, the locking group 4 includes an elastic member 7, the elastic member 7 springs against the Between the first head section 231 and the extension table 54 , when the operating portion 51 is forced upward to make the operation switch 5 rise relative to the lift core 2 , the extension table 54 will push the elastic member 7 in the direction of the first head section 231 . , when the force applied to the operation part 51 is released, the elastic force generated by the elastic member 7 will push the extension platform 54 downward, and then the operation switch 5 will be displaced downward, so as to achieve the automatic locking function of the locking group 4 .

As shown in Figs. 2 to 8, the first head section 231 extends downward with a positioning protrusion 232, and the extension table 54 extends upward with an extending positioning protrusion 541. The elastic member 7 is in the shape of a spring. The elastic member 7. It bounces between the first head section 231 and the extension platform 54 and traps the head positioning protrusion 232 and the extension positioning protrusion 541. In this structure, the head positioning protrusion 232 and the extension positioning protrusion 541 are capable of exhibiting spring-like elasticity. The member 7 has a limiting effect, which can prevent the elastic member 7 from being detached between the first head section 231 and the extension table 54 in the process of deformation and recovery.

As shown in Figs. 2 to 8, the operating portion 51 and the switch main body portion 52 are connected by a bridge portion 55. The core main body portion 22 is provided with a side port 25, which communicates with the inside of the core chute 221. , the bridge portion 55 is located at the side opening 25 , which is a structure in which the operation portion 51 can be exposed outside the core chute 221 without affecting the lifting and lowering of the operation switch 5 .

As shown in the second figure, the support portion 12 is formed by two arc side walls 125 and two short side walls 126 which are alternately connected and surround the accommodating space 121 . The two ends of each arc side wall 125 are facing the accommodating space 121 . The arc side wall 125 is curved in the direction of the arc, which can reduce the contact area between the support portion 12 and the interior of the lifting shell 3 during the lifting and lowering of the lifting shell 3 relative to the supporting portion 12 , so as to make the lifting and lowering of the lifting shell 3 smoother.

1: Armrest body 11: Seat connection 12: Support part 121: accommodating space 122: Opening 123: Positioning hole 124: Guide ditch 125: Arc Sidewall 126: Short Sidewall 2: Lifting core 21: Core connection part 22: Core main body 221: Core chute 23: The first limit part 231: first header 232: head positioning convex 233: The first figure 24: The second limit part 241: Second header 242: Second figure 25: side port 3: Lifting shell 31: Shell connection part 32: Shell main body 4: Lock Group 5: Operation switch 51: Operation Department 52: Switch main body 521: The first limit groove 5211: First wide groove section 5212: First narrow groove segment 522: The second limit groove 5221: Second wide groove section 5222: Second narrow groove 53: Guide structure 54: Extension table 541: Extended positioning convex 55: Bridge Department 6: Plug 61: Bolt body 62: Guide convex part 7: elastic parts 8: hand cushion

The first figure is a three-dimensional schematic diagram of the present invention. The second figure is an exploded schematic diagram of the present invention. The second picture A is a three-dimensional schematic diagram of the lifting core. The third figure is a schematic cross-sectional view of the line segment III-III of the first figure. The third figure A is a schematic cross-sectional view of the line segment IIIA-IIIA of the first figure. The fourth figure is a schematic cross-sectional view of the line segment IV-IV of the first figure. The fifth figure is a schematic diagram 1 of the operation switch rising. The fifth picture A is the second schematic diagram of the rise of the operation switch. The sixth figure is a schematic diagram 3 of the rise of the operation switch. The seventh picture is the first schematic diagram of the lifting core, the lifting shell, the locking group and the hand cushion. The eighth picture is the second schematic diagram of the lifting core, the lifting shell, the locking group and the hand cushion.

1: Armrest body

11: Seat connection

12: Support part

3: Lifting shell

8: hand cushion

Claims (8)

An armrest lifting adjustment structure, comprising: an armrest main body, which has a seat connecting part, the seat connecting part is bent upward and connected to a support part, the support part has an accommodating space, and the top end of the support part has a connecting part connected to the seat. An opening of the accommodating space; a lifting core, which has a core connecting part, the lower end of the core connecting part is connected with a core body part, the core body part is movably located in the accommodating space, and the core body part has a core chute , the core body portion extends with a first limit portion and a second limit portion, the first limit portion and the second limit portion are respectively located in the core chute and are arranged up and down, the first limit The core part has a connected first head section and a first body section, the first body section is connected to the core body part, the width of the first head section is wider than the width of the first body section, and the second limiting part has a connected a second head section, a second body section, the second body section is connected to the core main body, the width of the second head section is wider than the width of the second body section; a lifting shell, which has a shell connecting part, The lower end of the shell connecting part is connected with a shell main body part, the shell main body part surrounds the peripheral side of the support part, the shell connecting part is connected with the core connecting part; a locking group includes an operation switch, the operation switch has a connected a switch main body part and an operation part, the switch main body part is located in the core chute, the switch main body part has a first limit groove and a second limit groove, the first body is located in the first limit groove , the second body section is located in the second limiting groove, the first limiting groove has a first wide groove section and a first narrow groove section, and the width of the first head section cannot pass through the first narrow groove The second limiting groove has a connected second wide groove section and a second narrow groove section, the width of the second head section cannot pass through the second narrow groove section, and the locking group can operate the operation by operating the The switch is locked and unlocked. When the locking group is locked, the lifting core and the lifting shell cannot be lifted and lowered relative to the support portion. When the locking group is unlocked, the lifting core and the lifting shell can be lifted and lowered relative to the support portion; and a hand cushion , which is arranged in the shell connecting part. The lifting adjustment structure of the handrail as claimed in claim 1, wherein a plurality of positioning holes arranged up and down are provided on one side of the support portion, the plurality of positioning holes communicate with the accommodating space, the locking group includes a plug, the switch The lower section of the main body is provided with a guiding structure, and the plug is arranged in the guiding structure. When the operation switch is operated, the main body of the switch moves up and down in the core chute, and the guiding structure drives the plug to correspond to each other. When the locking group is locked, the plug is inserted into the corresponding positioning hole, and when the locking group is unlocked, the plug is not inserted into the plurality of positioning holes. The lifting adjustment structure of the handrail as claimed in claim 1, wherein a plurality of positioning holes arranged up and down are provided on one side of the support portion, the plurality of positioning holes are communicated with the accommodating space, and each adjacent positioning hole in the plurality of positioning holes A guide groove is connected between the holes, the locking group includes a plug, the plug has a plug main body, the lower section of the switch main body is provided with a guide structure, the plug is arranged on the guide structure with the plug main body, the A guide protrusion extends from the side of the main body of the bolt away from the guiding structure. When the operation switch is operated, the main body of the switch moves up and down in the core chute and drives the bolt relative to the corresponding positioning hole through the guiding structure. When the locking group is locked, the plug is inserted into the corresponding positioning hole. When the locking group is unlocked, the bolt body is not inserted into the plurality of positioning holes, and the guiding protrusion is located in the corresponding guide groove or the corresponding positioning hole. Inside. The lifting adjustment structure of the handrail according to claim 3, wherein the bottom surface of the guiding protrusion is inclined downward from the extending end toward the main body of the bolt. The lifting adjustment structure of the handrail as claimed in claim 1, wherein an extension table extends from the main body of the switch, the extension table corresponds to the first head section, the locking group includes an elastic member, and the elastic member springs against the first head between the segment and the extension platform. The lifting adjustment structure of the handrail according to claim 1, wherein a positioning protrusion extends downward from the first head section, an extending positioning protrusion extends upward from the extension platform, the elastic member is in the form of a spring, and the elastic member springs against The head positioning protrusion and the extending positioning protrusion are trapped between the first head section and the extension table. The lifting adjustment structure of the handrail as claimed in claim 1, wherein the operating portion and the switch main body are connected by a bridge portion, the core main body portion is provided with a side port, the side port is communicated with the inside of the core chute, and the bridge portion at this side entrance. The lifting adjustment structure of the handrail as claimed in claim 1, wherein the supporting portion is formed of two arc side walls and two short side walls which are alternately connected and surrounds the accommodating space, and the two ends of each arc side wall face the accommodating space. Bent direction.

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