TW202308535A - Crutch chair with unfolding positioning device for enhancing sitting safety - Google Patents

Abstract

A crutch chair with unfolding positioning device includes a supporting unit, a sliding seat, a seat surface unit, and a positioning unit. The supporting unit includes a main support rod and at least two secondary support rods. The sliding seat is slidably sleeved on the main support rod. The seat surface unit is linked with the sliding seat to be switched between a folded state being folded relative to the main support rod and an unfolded state being unfolded relative to the main support rod and having a crossed angle. The positioning unit includes an embedding portion disposed on the main support rod, and an engaging portion disposed on the sliding seat. When the seat surface unit is in the folded state, the embedding portion and the engaging portion are separated from each other; when the seat surface unit is in the unfolded state, the embedding portion and the engaging portion are engaged with each other. The positioning unit may be used to achieve the purpose of unfolding positioning.

Description

Crutch chair with deployable positioning device

The invention relates to a chair, in particular to a crutch chair with an unfolding positioning device.

Elderly people or people with limited mobility may not be able to walk uninterruptedly due to the decline and insufficiency of their physiological functions. Therefore, they need to stop and rest properly during the walking process, and can only walk again after their physical strength recovers. Therefore, some related companies have developed related appliances that can be operated in a riding or auxiliary support state according to user needs.

For example, Taiwan Certificate No. I480038 patent case "crutch chair" includes a main rod, a riding unit, a bottom limit unit, a support unit and a connecting rod unit, and the riding unit has a top sliding seat that can slide along the main rod and a seat surface member pivotally connected to the top slide seat, when the top slide seat is operated to slide along the main rod, the ride unit links the link unit, and the link unit links the support unit, so that the The support unit is operated from a folded state to an unfolded state. When the support unit is in the unfolded state, the seat surface component forms an included angle with the main rod and is available for sitting.

Although the crutch chair can be used for multiple purposes, in order to provide better stability when the support unit is operated in an unfolded state, the applicant has developed an innovative design.

Therefore, an object of the present invention is to provide a crutch chair with a simple structure and better stability with an unfolding positioning device.

Therefore, the crutch chair with the deployment positioning device of the present invention includes a support unit, a sliding seat, a seat surface unit and a positioning unit. The support unit includes a main support rod and at least two auxiliary support rods pivotally connected with the main support rod. The sliding seat is slidably sleeved on the main support rod. a transition between a folded state close to the main support rod and an unfolded state unfolded relative to the main support rod and intersecting at an angle, the positioning unit includes an engaging part arranged on the main support rod, and An engaging part provided on the sliding seat, the engaging part and the engaging part are concavo-convex complementary, and when the seat surface unit is in the folded state, the engaging part and the engaging part are separated from each other, the seat surface When the unit is in the unfolded state, the interlocking portion and the engaging portion are nested with each other.

The effect of the present invention is that when the seat surface unit is in the unfolded state, the seat surface unit can be stably deployed and positioned by using the interlocking portion and the engaging portion to nest together, thereby improving the safety of riding.

Referring to FIG. 1 to FIG. 3 , an embodiment of a crutch chair with an unfolding positioning device according to the present invention includes a support unit 10 , a sliding seat 20 , a seat surface unit 30 , a braking unit 40 and a positioning unit 50 .

The support unit 10 includes a pivot base 11 , a main support rod 12 pivotally connected to the pivot base 11 , and two auxiliary support rods 13 pivotally connected to the pivot base 11 and mutually pivotally connected to the main support rod 12 . The pivot base 11 has a pivot member 111 arranged along an axis L, three through holes 112 surrounding the pivot member 111, and three pin rods respectively passing through the through holes 112 and facing the axis L. 113. The length of the main support rod 12 is greater than the auxiliary support rods 13. The main support rod 12 has a first bottom end 121, a first top end 122 opposite to the first bottom end 121, and a first top end 122 mounted on the first bottom end 121. The handle 123 of the top end 122 , each secondary support rod 13 has a second bottom end 131 , and a second top end 132 opposite to the second bottom end 131 .

The sliding seat 20 has a sleeve 21 slidably sleeved on the main support rod 12 , a pivot block 22 protruding from one side of the sleeve 21 , and a protruding sleeve 21 on the other side. The hub ear 23. The sleeve 21 has a bottom edge 211 , a top edge 212 opposite to the bottom edge 211 , and two elastic slots 213 recessed from the bottom edge 211 .

The seat unit 30 includes a seat unit 301 connected to the sliding seat 20 , and a connecting rod unit 302 connected to the pivot seat 11 and linked by the seat unit 301 . The ride group 301 has a main support 31 connected to the sliding seat 20, two side supports 32 pivotally connected to both sides of the main support 31, and a guide part 33 arranged on the main support 31 .

The main support member 31 has a first end 311 adjacent to the main support rod 12, a second end 312 opposite to the first end 311 along a first axial direction X, and a pair connected to the first end 311. The long side edge 313 between the second end 312, a main support surface 314 extending from the first end 311 to the second end 312, a main bottom surface 315 opposite to the main support surface 314, a pair of A pivot plate 316 at the first end 311 and pivotally connected to the pivot block 22, a plurality of first pivot tubes 317 respectively disposed on the equal length side edges 313, and a guide rail 318 extending along the first axis X . The guide rail 318 is recessed from the main bottom surface 315 and has a shape that is wide on the inside and narrow on the outside (the cross section of the guide rail 318 perpendicular to the first axis X is in an inverted T shape).

Each side support member 32 has an inner edge 321 adjacent to one of the long side edges 313 of the main support member 31, an outer edge 322 opposite to the inner edge 321, and an outer edge 322 extending from the inner edge 321 to the outer edge. The side support surface 323 of 322, a side bottom surface 324 opposite to the side support surface 323, a latch block 34 adjacent to the inner edge 321 and corresponding to the guide portion 33, most of which are respectively arranged on the inner edge 321 and connected with The first pivot tubes 317 are pivotally connected to the second pivot tube 326 , and a blocking block 327 adjacent to the outer edge 322 and opposite to the side support surface 323 , the blocking block 327 is L-shaped. The latched block 34 has a latched surface 341 intersecting the side bottom surface 324 , a limiting surface 342 intersecting the latched surface 341 , and a guiding surface intersecting the latched surface 341 343 , the limiting surface 342 and the guiding surface 343 are substantially parallel to the first axis X, the latched block 34 is adjacent to the first end 311 of the main supporting member 31 , and the latched surface 341 is in the shape of an inclined plane. In addition, one side support member 32 has a buckle plate 345 disposed on the outer edge 322 and has a buckle hook 344 , and the other side support member 32 has a buckle ring disposed on the outer edge 322 and has a buckle hole 346 347 , when the seat surface unit 30 is in the folded state, the buckle hole 346 of the buckle ring 347 and the buckle hook 344 of the buckle plate 345 are buckled together.

The guide portion 33 is in the shape of a guide rail and is disposed between the equal length side edges 313 and extends corresponding to the first axis X. The guide portion 33 is located between the main supporting surface 314 and the main bottom surface 315 and Parallel to the main supporting surface 314 , the guiding portion 33 corresponds to the first end 311 .

The link set 302 has a slider 35 that can slide along the guide rail 318, a first link 36 pivotally connected between the slider 35 and the pivot member 111, and a first link 36 pivotally connected to the first link. The second connecting rod 37 between the rod 36 and the pivot ear 23 of the slider 20 .

4, the detent unit 40 extends along a second axis Y perpendicular to the first axis X, and corresponds to the detent blocks 34 and is movably connected to the guide portion 33, and includes A pivot member 41 movably passed through the guide portion 33, a pair of detent plates 42 respectively connected to both sides of the pivot member 41 along the second axial direction Y, a pair of detent plates 42 respectively connected to the The trigger plate 42 is pivotally connected to the pivot plate 43 of the sliding sleeve 20 , and a pair of pivoting portions 44 respectively disposed on the pivot plates 43 and pivotally connected to the pivot block 22 . The pivot member 41 is rod-shaped. Each of the locking plates 42 has a locking portion 421 disposed on a side edge.

The positioning unit 50 includes an engaging portion 51 disposed on the main support rod 12, and an engaging portion 52 disposed on the sliding seat 20, the engaging portion 51 and the engaging portion 52 are concavo-convex complementary, and the engaging portion 51 When the seat unit 30 is in the folded state, the engaging portion 51 and the engaging portion 52 are separated from each other (see FIG. 5 ), and when the seat unit 30 is in the expanded state, the engaging portion 51 and the engaging portion 52 are Nest each other (see Figure 8 and Figure 9). The embedded part 51 is in the shape of a short cylinder, and is protruded from the main support rod 12 (actually, the embedded part 51 in this embodiment is the head of the pull rivet riveted on the main support rod 12), see 4, the engaging portion 52 is recessed from the bottom edge 211 of the slide seat 20 toward the top edge 212 and is in the shape of a groove. The engaging portion 52 is wide inside and narrow outside, and has an angle greater than 180 degrees. A circular groove segment 521 , and a limiting segment 522 adjacent to the bottom edge 211 , the width of the limiting segment 522 is smaller than the diameter of the circular groove segment 521 . The elastic groove 213 of the sliding seat 20 allows the elastic deformation of the limiting section 522 to produce a width change.

In order to further understand the functions produced by the cooperation of the various components of the present invention, the technical means used, and the expected effects, the following will be described again, and it is believed that a deeper and specific understanding of the present invention can be obtained from this.

As shown in Fig. 1, Fig. 2 and Fig. 5, when the whole assembly of the crutch chair with deployment positioning device applicable to the crutch chair of the present invention is completed, and the seat surface unit 30 is in the folded state, the main body of the support unit 10 The supporting rods 12 and the auxiliary supporting rods 13 are in close contact with each other and are substantially parallel. At this time, the second end 312 of the main support member 31 is close to the abutment state of the pivot base 11, and the main support member 31 and the side supports 32 form an inverted U shape around the pivot base 11. The isolateral support surface 323 is arranged at an angle relative to the main support surface 314 . At this time, the sliding block 35 approaches the first end 311 , and the locking plates 42 are respectively located between the locking blocks 34 and the main supporting surface 314 . The buckle hole 346 of the buckle ring 347 is interlocked with the buckle hook 344 of the buckle plate 345 , and the main support 31 and the side support 32 of the seat unit 30 are stably kept in the folded state. At this time, the sliding seat 20 approaches the first top end 122 of the main support bar 12 , and the engaging portion 51 and the engaging portion 52 are separated from each other.

As shown in Figure 6, first unfasten the fastening between the buckle hole 346 of the buckle 347 and the buckle hook 344 of the buckle plate 345, when the operator pulls up the second end 312 of the main support member 31, and makes the second end 312 When the two ends 312 gradually move away from the pivot seat 11, the main support member 31 pivots relative to the slide seat 20, and is pivotally connected with the locking unit 40 by the slide seat 20, and the pivot guide member 41 is slidably passed through. The function provided in the guide part 33, the detent unit 40 also rotates while translating along the guide part 33, and the detent parts 421 of the detent plates 42 move from the main supporting surface 314 toward the The main bottom surface 315 is tilted, causing the latching parts 421 of the latching plates 42 to be obliquely latched between the latching surfaces 341, and the latching blocks 34 are pressed by the latching plates 42. Oblique detent, and linked the entire side support 32 to rotate relative to the main support 31, until as shown in Figure 8 and Figure 9, the detent parts 421 are respectively supported on the limit surfaces 342 , the catch blocks 34 are located on both sides of the catch plates 42 along the second axis Y, and the side support surfaces 323 are maintained in a parallel and unfolded state relative to the main support surface 314 . At this time, the engaging portion 52 of the positioning unit 50 disposed on the sliding seat 20 and the engaging portion 51 disposed on the main support bar 12 are nested with each other (see FIG. 8 ), and provide the chair surface unit 30 with respect to the The positioning stability of the main support rod 12.

In addition, after the side supports 32 are pivotally deployed relative to the main support 31, the two sides of the stop plates 42 are used to support the position limiting surfaces 342 of the side supports 32. In this way, the side supports 32 can be maintained in an unfolded state arranged side by side with respect to the main support 31 , and the side supports 32 will not pivot relative to the main support 31 at will.

Conversely, when the operator pulls the sliding seat 20 to slide upwards along the main support rod 12 and makes the second end 212 gradually approach the pivot seat 11, the elastic slot 213 of the sliding seat 20 allows the limit The segment 522 generates elastic deformation with a width change, which also makes the engaging portion 52 easily disengage from the engaging portion 51 . Just can change from Fig. 8, Fig. 9 to the state of Fig. 1 and Fig. 2, Fig. 5 gradually, and can make this seat surface unit 30 return to be folded state, and the second end 312 of this main support member 31 approaches this pivot. The abutment state of the seat 11.

The principle of using the trigger unit 40 to link the seat surface unit 30 to generate the folding and unfolding action has been disclosed in Taiwan Patent Certificate No. I736504, so the detailed structure and action will not be further explained.

Therefore, in the present invention, the engaging portion 51 of the positioning unit 50 is arranged on the main support rod 12, and the engaging portion 52 is arranged on the sliding seat 20. Then, when the sliding seat 20 is operated to slide relative to the main supporting rod 12, And when the seat surface unit 30 is in the unfolded state, the interlocking portion 51 and the engaging portion 52 are nested with each other, so that the seat surface unit 30 can be stably fixed relative to the main support rod 12, providing a comfortable ride. safety.

To sum up, the crutch chair with the deployment positioning device of the present invention has a simple overall structure, is easy to manufacture and assemble, and can produce a stable and fixed effect of deployment, which can indeed achieve the purpose of the present invention.

But the above-mentioned ones are only embodiments of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.

10: Support unit 11: Pivot seat 111: Pivot piece 112: perforation 113: pin rod 12: Main support rod 121: First Bottom 122: first top 123: handle 13: Auxiliary support rod 131: second bottom end 132: second top 20: sliding seat 21: Casing 211: bottom edge 212: top edge 213: elastic groove 22: Pivot block 23: hub ear 30: Seat surface unit 301: Ride group 31: Main support 311: first end 312: second end 313: long side edge 314: main support surface 315: main bottom surface 316: Pivot board 317: The first pivot takeover 318: guide rail 32: side support 321: inner edge 322: outer edge 323: side support surface 324: side bottom surface 326: The second pivot tube 327: block 33: Guide Department 34: block block 341: Receiving surface 342: limit surface 343: guide surface 344: hook 345: gusset 346: buttonhole 347: Buckle 302: Connecting rod group 35: Slider 36: The first connecting rod 37: Second connecting rod 40: Detent unit 41: Pivot guide 42: Detent plate 421: Detent 43: Pivot board 44: Shaft rotation part 50: positioning unit 51:Embedded card part 52:Catching part L: axis X: the first axis Y: the second axis

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a three-dimensional assembled view of an embodiment of the crutch chair with the deployment positioning device of the present invention; Fig. 2 is a partially enlarged schematic diagram of Fig. 1; Fig. 3 is a three-dimensional exploded view of this embodiment; Fig. 4 is a three-dimensional exploded schematic view of a sliding seat and a braking unit of the embodiment; Fig. 5 is a schematic plan view of this embodiment; Fig. 6 is a schematic diagram of an operation action of this embodiment; Fig. 7 is a schematic perspective view of an operation of the embodiment, illustrating that a support unit and a seat surface unit are in an unfolded state; Figure 8 is a bottom perspective schematic view of the embodiment; and FIG. 9 is a schematic plan view of FIG. 8 .

10: Support unit

11: Pivot seat

111: Pivot piece

112: perforation

113: pin rod

12: Main support rod

122: first top

13: Auxiliary support rod

132: second top

20: sliding seat

21: Casing

211: bottom edge

212: top edge

213: elastic groove

22: Pivot block

23: hub ear

30: Seat surface unit

301: Ride group

31: Main support

311: first end

312: second end

313: long side edge

314: main support surface

315: main bottom surface

316: Pivot board

317: The first pivot takeover

318: guide rail

32: side support

321: inner edge

322: outer edge

323: side support surface

324: side bottom surface

326: The second pivot tube

33: Guide Department

344: hook

347: Buckle

302: Connecting rod group

36: The first connecting rod

37: Second connecting rod

40: Detent unit

42: Detent plate

421: Detent

43: Pivot board

44: Shaft rotation part

50: positioning unit

51:Embedded card part

52:Catching part

L: axis

Claims (7)

A crutch chair with an unfolding positioning device, comprising: A support unit, including a main support rod, and at least two auxiliary support rods pivotally connected with the main support rod; a sliding seat, slidably sleeved on the main support rod; A seat surface unit, linked by the sliding seat, can be switched between a closed state relative to the main support rod and an unfolded state relative to the main support rod and intersecting at an angle; and A positioning unit, including an engaging part arranged on the main support rod, and an engaging part arranged on the sliding seat, the engaging part and the engaging part are concavo-convex complementary, and the seat surface unit is folded In the state, the engaging portion and the engaging portion are separated from each other, and when the seat unit is in the expanded state, the engaging portion and the engaging portion are nested with each other. The crutch chair with the deployment positioning device as described in claim 1, wherein, the embedded part of the deployment positioning unit is in the shape of a short cylinder and protrudes from the main support rod, and the sliding seat also has a bottom edge and a Contrary to the top edge of the bottom edge, the engaging portion is recessed from the bottom edge toward the top edge and is in the shape of a groove. The crutch chair with deployment positioning device as described in claim 2, wherein the engaging part of the sliding seat is wide inside and narrow outside, and has a circular groove section with an angle greater than 180 degrees, and a The limiting section of the bottom edge, the width of the limiting section is smaller than the diameter of the circular groove section. According to claim 3, the crutch chair with deployment positioning device, wherein, the sliding seat also has at least one elastic groove provided on one side of the engaging part and recessed by the bottom edge, the elastic groove allows the limit The segments are elastically deformed with varying widths. The crutch chair with deployment positioning device according to claim 1, wherein, the support unit further includes a pivot seat, the main support rod and the auxiliary support rods are pivotally arranged on the pivot seat, and the seat surface unit includes a connecting The riding group on the sliding seat, and a connecting rod group connected to the pivot seat and linked by the riding group. state and an unfolded state that is unfolded relative to the support rods. The crutch chair with deployment positioning device as described in claim 5, wherein, the seating group of the seat surface unit has a main support member pivotally connected to the sliding seat, a pair of main support members respectively pivotally connected to the main support member and respectively provide The side supports supported by the auxiliary support rods, and a guide part arranged on the main support, the main support has a main support surface, each side support has a side adjacent to the main support an inner edge, an outer edge opposite to the inner edge, a side support surface extending from the inner edge to the outer edge, a side bottom surface opposite to the side support surface, and a catch corresponding to the guide portion block, the block has a block that intersects with the bottom surface of the side, and the surface is inclined, and the crutch chair with the deployment positioning device also includes a braking unit, the braking unit corresponds to the The detent block is movably connected to the guide part, and includes two detent parts. The detent unit is linked by the linkage unit, so that the detent parts and the detent surfaces are obliquely detented. and move the side support surfaces relative to the main support surface between a folded state arranged at an angle and an unfolded state in which the side support surfaces are arranged side by side relative to the main support surface. The crutch chair with the deployment positioning device as described in claim 6, wherein one side of the seat surface unit has a buckle plate provided on the outer edge and has a buckle hook, and the other side support has a A buckle ring is provided on the outer edge and has a buckle hole. When the seat surface unit is in a folded state, the buckle hole of the buckle ring and the buckle hook of the buckle plate are interlocked.

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