TWM536006U - Chair waistrest structure - Google Patents

Description

Seat lumbar structure

This creation relates to a seat lumbar structure, which mainly refers to an ergonomically adjustable waist cushion body angle for improved applicability and comfort.

The seat mainly has a foot seat, a seat base and a seat back assembly. The seat back structure is designed to improve the ride comfort, and the lumbar support can be placed against the rear of the human waist to improve the lumbar support comfort. .

The lumbar support generally has a soft cushion body protruding from the lower position of the seat back. However, due to the different body shape and different postures of the user, the lumbar support may not necessarily support the lack of the back of the human waist.

The conventional design has an adjustable lumbar angle design such as TWM308020. However, the soft cushion of the lumbar support is assembled on the hard plate body. Although the plate body can adjust the angle corresponding to the back of the chair, the backrest of the plate itself may only be adjusted. Part of the position is close to the waist of the human body, and the large front surface of the cushion is not able to be attached to the rear of the waist of the human body, and the support comfort is still not ideal.

The purpose of this creation is to provide an adjustable waist cushion angle for improved applicability and comfort.

The present invention includes a joint seat, a support base, and a joint member, wherein the joint seat is disposed at a position below the seat back, and an upper pivot portion is respectively disposed on the upper two sides; and the support seat has a support plate and a support a pad body, the pad body is disposed in front of the support plate, and the support plate 2 The side of the upper pivotal portion is provided with a pivoting portion; the connecting member has at least one pivotal rod and at least one elastic member, the pivoting rod provides the upper pivotal portion to pivotally connect with the pivoting portion, and the elastic member provides a supporting seat The corresponding joint pivots the elastic force.

Further, the upper end of the joint seat is provided with an upper abutting portion, and the upper abutting portion has a rear abutting portion; and the lower side of the supporting plate has a lower abutting portion corresponding to the upper abutting portion, and the lower abutting portion has a lower abutting portion. a rear abutting portion, and the supporting seat can abut the upper rear abutting portion and the lower rear abutting portion by the elastic force of the elastic member, and the lower side of the supporting seat can be inclined toward the front, and the center of the connecting seat has a concave portion A convex portion is disposed at a position below the center of the support plate corresponding to the concave portion.

Further, the pivoting portion of the joint seat is laterally disposed with a pivoting groove, and an outer side of the pivoting groove is provided with an engaging hole; and the pivoting portion of the supporting plate is provided with a lateral pivoting groove, and an engaging hole is disposed outside the pivoting groove; The two pivotal rods and the two elastic members further include a plurality of fixing plates, respectively, which can respectively cover the pivoting grooves of the engaging seat and the supporting plate, and each of the fixing plates is respectively provided with a through hole and the through hole of the fixing plate is inserted by the engaging component. The engaging hole or the supporting hole of the supporting plate is combined, and the two elastic members can be a torsion spring having two ends, and the two ends are respectively abutted against the engaging seat and the supporting plate.

The joint seat of the creation is arranged under the seat corresponding to the back of the seat, and the forward extension angle under the support seat can be matched with the ergonomics and the back of the human waist, and the support seat can be made by the elastic force of the elastic member. The pad body can change the angle and the force of the back of the human body to provide better support comfort, and the support seat of the present invention can be pivoted to an appropriate angle according to the body shape and the posture of the body, and can be supported by the joint seat. Abutment and support The lower abutment abuts to limit the maximum pivot angle of the support to provide better applicability and pivotal actuation stability.

1‧‧‧ joint seat

11‧‧‧ Lower joint

111‧‧‧ Lower pivotal

112‧‧‧ Fixed seat

113‧‧‧ Positioning device

12‧‧‧ recess

13‧‧‧Upper pivot

131‧‧‧ Groove

132‧‧‧ pivot slot

133‧‧‧Join hole

14‧‧‧Affiliation

15‧‧‧After the abutment

2‧‧‧ support

21‧‧‧Support board

211‧‧‧ Lower convex

212‧‧‧Joint piece

213‧‧‧Affiliation

214‧‧‧After the abutment

215‧‧‧ pivotal department

216‧‧‧ pivot slot

217‧‧‧Join hole

22‧‧‧

221‧‧‧ slotted

3‧‧‧Links

31‧‧‧ pivot

32‧‧‧ fixed board

321‧‧‧Perforation

33‧‧‧Flexible parts

331‧‧‧End

332‧‧‧End

34‧‧‧ Engagement components

4‧‧‧Back of the chair

Figure 1 is an exploded view of the creation.

Figure 2 is a combination of the creations.

Figure 3 is a schematic view of the creation of the seat.

Figure 4 is a schematic cross-sectional view of A-A corresponding to Figure 2 of this creation.

Figure 5 is a schematic diagram of the pivoting action of the corresponding joint of the B-B support seat corresponding to Figure 2 of the present creation.

Referring to Figures 1-3, the present invention includes a joint 1, a support base 2, and a joint member 3. The bottom of the joint base 1 has a joint portion 11 engageable with a lower portion of the seat back 4 of the seat. The joint portion 11 has a pivoting portion 111 pivotally mounted on a fixing seat 112. The fixing seat 112 can be fixed under the seat back 4, and the positioning device 113 can position the lower pivot portion 111 to pivot and engage. A recess 12 is disposed in the upper center of the seat 1 , and an upper pivoting portion 13 is disposed on each of the two sides of the joint 1 , and the upper abutting portion 14 and the upper abutting portion 14 are disposed on the two sides of the seat 1 , and the upper abutting portion 15 is disposed. The connecting portions 13 respectively have a recess 131, and a pivot slot 132 is disposed laterally in the recess 131. The pivoting hole 132 is disposed above and below the pivoting slot 132.

The support base 2 has a support plate 21 and a pad body 22, and a lower convex portion 211 is disposed at a position corresponding to the concave portion 12 of the joint seat 1 at the lower center of the support plate 21, and a joint piece 212 for engaging the pad body 22 is protruded on the inner side, and A lower abutting portion 213 is disposed at a position corresponding to the upper abutting portion 14 of the joint seat 1 on the lower side of the joint, and the lower abutting portion 213 has a rear portion abutting against the rear abutting portion 15 of the jointing seat 1 214, a pivoting portion 215 is disposed at a position corresponding to the pivoting portion 13 on the joint base 1, and the pivoting portion 215 is disposed. The pivoting portion 215 is provided with a lateral pivoting groove 216, and an engaging hole 217 is disposed above and below the pivoting groove 216, and the pad body 22 is provided with a fitting groove 221 at the back surface to engage with the engaging piece 212 of the support plate 21.

The connecting member 3 includes two pivots 31, a plurality of fixing plates 32, and two elastic members 33. The two sides of the two pivoting rods 31 are respectively disposed in the pivoting groove 132 of the jointing seat 1 and the pivoting groove 216 of the supporting plate 21, and the number is fixed. The plate 32 can respectively cover the pivoting grooves 132 and 216 of the jointing seat 1 and the supporting plate 21, and the fixing plates 32 are respectively provided with the through holes 321 and the through holes 321 of the fixing plate 32 and the jointing seat 1 or the supporting plate 21 are inserted by the engaging elements 34. The engaging holes 133, 217 are combined, and the support base 2 can be stably pivoted with the joint base 1; and the elastic members 33 provide the support base 2 for pivoting elastic force corresponding to the joint seat 1, and the two elastic members 33 are torsion springs. Two end portions 331, 332, and the two end portions 331, 332 abut against the joint base 1 and the support plate 21, respectively, and the one end portion 331 can be inserted into the through hole 321 of the joint member 34 and the fixing plate 32 and the joint seat 1 The engaging hole 133 is engaged for a better combination of stabilizing effects, and the support base 2 can abut the lower rear abutting portion 214 against the rear abutting portion 15 of the jointing seat 1 by the elastic force of the elastic member 33, and the supporting seat 2 The lower side can be tilted forward toward the front to abut the rear angle of the human waist.

Referring to Figures 1 to 5, the joint 1 of the present invention is disposed at a position below the seat corresponding to the seat back 4, and the forward extension angle of the support base 2 can be matched with the ergonomics and the rear of the human waist, and the creation The concave portion 12 of the joint seat 1 and the lower convex portion 211 of the support plate 21 are designed such that the lower convex portion 211 can be protruded forward from the position corresponding to the lower waist portion for better applicability, and the joint seat 1 itself can be Adjusting the angle corresponding to the seat back 4 can have better adjustment effect.

According to the elastic force of the elastic member 33, the cushion body 22 of the support base 2 can apply force to the rear of the human waist to provide better support comfort, and the support base 2 of the present invention can be matched with the human body shape and the riding posture. The seat 1 is pivoted to an appropriate angle and can be coupled by the seat 1 The upper abutment portion 14 abuts against the lower abutment portion 213 of the support base 2 to limit the maximum pivot angle of the support base 2, and provides better applicability and pivotal actuation stability.

Therefore, as described above, the present invention can provide a seat lumbar support with better ergonomic ride comfort, and the joint of the present creation does not necessarily have to be pivotable corresponding to the back of the chair, and the foregoing embodiment is a creation The exemplification is not a limitation of this creation. Any equivalent change based on the spirit of this creation should also fall within the scope of this creation.

While the specific embodiments have been described, it is possible that many modifications and variations are possible without departing from the scope of the present invention.

1‧‧‧ joint seat

113‧‧‧ Positioning device

2‧‧‧ support

22‧‧‧

4‧‧‧Back of the chair

Claims (6)

The utility model relates to a seat lumbar support structure, comprising: a joint seat disposed at a position below the seat back, an upper pivot joint portion respectively disposed on the upper two sides; a support base having a support plate and a cushion body, the cushion body The front side of the support plate is disposed on the two sides of the support plate, and the pivoting portion is disposed corresponding to the upper pivotal portion; the connecting member has at least one pivot rod and at least one elastic member, and the pivot rod provides the upper pivotal portion and the pivotal connection The pivoting portion is coupled to the elastic member to provide a pivoting elastic force of the supporting seat corresponding to the engaging seat. The seat lumbar structure according to claim 1, wherein the upper end of the joint is provided with an abutting portion, the upper abutting portion has a rear abutting portion, and the lower side of the supporting plate corresponds to the upper abutting portion. The lower abutting portion has a lower abutting portion at the rear of the lower abutting portion, and the supporting seat can abut the upper rear abutting portion and the lower rear abutting portion by the elastic force of the elastic member, and the lower side of the supporting seat can be oriented Tilt forward. The seat lumbar structure according to claim 1, wherein a center of the joint has a concave portion, and a lower portion of the support plate is disposed at a position corresponding to the concave portion. The seat lumbar structure of claim 1, wherein the pivoting portion of the joint seat is laterally disposed with a pivoting groove, and the pivoting groove is provided with an engaging hole outside; and the pivoting portion of the supporting plate is provided with a lateral pivoting groove, and An engaging hole is disposed outside the pivot slot; the connecting member has two pivot rods and two elastic members, and further includes a plurality of fixing plates, wherein the plurality of fixing plates respectively cover the pivoting slots of the joint seat and the support plate, and the fixing plates are respectively disposed The perforations that are perforated and inserted by the engaging member into the fixing plate are combined with the engaging holes of the engaging seat or the supporting plate. The seat lumbar structure of claim 4, wherein the two elastic members are torsion springs having two ends, and the two ends are respectively abutted against the joint base and the support plate. A seat lumbar structure according to claim 5, wherein one end of the elastic member is insertable with the engaging member and the engaging hole of the fixing plate and the engaging hole of the engaging seat.