CN202234095U - Chair adjusting device - Google Patents

Abstract

A chair adjustment device, comprising: a base; a first adjusting device assembled on the base; a chair back support body, one end of which can be assembled with a chair back, and the chair back support body is pivoted on the base; one end of the chair seat supporting body is pivoted on the chair back supporting body, and the other end of the chair seat supporting body which is oppositely pivoted on the chair back supporting body is pivoted on the base; the chair back support body can be changed between a locking state and a releasing state, and when the chair back support body is in the locking state, a user can operate the first adjusting device to enable the chair back support body to be in the releasing state; therefore, the distance between the seat support body and the base is adjusted, and simultaneously, the angle of the chair back relative to the base is changed, and the distance between the seat support body and the base is changed.

Description

chair adjustment device

technical field

The utility model mainly discloses a chair adjusting device, especially a chair adjusting device for adjusting the reclining angle of the chair back and the seat.

Background technique

For chairs with a synchronous rocking structure that moves the seat in conjunction with the rocking of the backrest, chairs that sink the seat in conjunction with the recline of the chair are becoming more and more popular, but the opposite is true. , In addition, there are also chairs that are linked to the back tilt of the chair and make the seat rise.

For a chair of a type in which the seat is raised in conjunction with the reclining of the chair back, for example, the chair disclosed in International Patent Organization (WIPO) Publication No. WO 00/74531. This chair has the following structure. Including the state where the legs can be raised to the maximum, the reaction force generated at the initial stage becomes the largest during the process of the seat back being tilted backward by the occupant, and then the reaction force gradually decreases. This type of chair requires greater strength when the back of the chair begins to topple over, and the occupant must lean on the back of the chair vigorously. However, if the chair back is tilted to a certain extent, the reaction force will suddenly weaken, thus making the chair back easy to dump suddenly, causing inconvenience in use.

In addition, since this type of chair uses a chain link connecting the front half of the seat support and the base, the number of parts is relatively large. In other words, the locking rod is a necessary accessory, and shafts arranged above and below the locking rod are also required. As a result, the number of parts increases, the manufacturing cost increases, and the structure becomes complicated.

In order to solve the above-mentioned problems, the designer of the present utility model is committed to designing a chair adjustment device that can overcome the problems of the prior art.

Contents of the invention

The purpose of the utility model is to provide a chair adjustment device, the chair back support body can be changed between a locked state and a released state. One of the positioning slots of the seat back support body is inserted into the positioning piece, so that the seat back support body is in a locked state, and passes through the two second clamping holes and the two second shaft holes. The fixing screw abuts against the first hole end of the second clamping hole, and when the seat back support is in the locked state, the user can hold the operating portion of the first operating lever and turn the first operating lever clockwise , so that the first operating rod drives the first linkage and the second linkage to pivot relative to the connecting seat, the second linkage drives the driving elastic member, and drives the positioning through the driving elastic piece, the positioning piece is disengaged from the positioning slot, and the seat back support is in a released state.

The seat supporting body can be changed between a first position and a second position. The seat support body can be assembled with a seat seat. When the seat back support body is in the released state, the seat support body is in the first position, and the user can sit on the seat seat and exert force on the seat with the user's back. The chair back is used to make the chair back supporting body pivot relative to the base with the fixed shaft as the axis, the sliding groove of the base can accommodate the rocking plate of the chair back supporting body, and the cross bar of the rocking plate presses When the main elastic member is pressed against the top groove of the cover, the back support is compressed by the user, and the user continues to apply force to the back, so that the back support passes through the two first clamping holes and the two first straight The fixed shaft part of the hole drives the seat support body as an axis, so that the seat support body changes from the first position to the second position. And the two fixing screws passing through the two second clamping holes and the two second shaft holes lean against the second hole end of the second clamping hole, and the positioning piece pushes against the lower edge of the front blocking piece to make the chair The back support is in a locked state.

In the chair adjustment device of the utility model, the user can hold the control part of the second operating lever and turn the second operating lever clockwise, so that the second operating lever drives the first driving member to pivot relative to the connecting seat , by abutting against one end of the second driving member, the first driving member makes the second driving member pivot relative to the base, and makes the second driving member press against the chair foot against the end of the first driving member, thereby Change the relative height between the base and the chair legs.

In order to achieve the above purpose, the utility model provides a chair adjustment device, which includes:

A base, which has a first end and a second end, the base extends from the first end to the second end to form a bottom, and the base is on both sides of the bottom from the first end to the The second ends extend longitudinally to form a side portion respectively, and the base has a connecting seat;

A first adjustment device is assembled on the base, the first adjustment device has a first linkage, a second linkage, a driving elastic piece, a positioning piece, a first operating rod, the The first link can pivot relative to the connecting seat, the second link can be driven by the first link to pivot relative to the connecting seat, and the first operating rod passes through one side of the base And pass through the first linkage, the connecting seat, the second linkage and the driving elastic piece in sequence;

A chair back supporting body, one end of which can be assembled with a chair back, and one end of the positioning piece can be releasably inserted in the chair back supporting body, and the opposite end of the chair back supporting body has a front blocking piece, the front The baffle has several positioning slots, and the chair back support is formed by extending from the two ends of the front baffle opposite to the two sides of the base to form a rocking plate, and the two rocking plates and the two sides provide a fixed shaft a heart piece passes through such that the back support is pivoted to the base; and

A seat supporting body, one end of which is pivoted to the seat back supporting body, the other end of the seat supporting body is pivoted to the base, and the seat supporting body has a top;

The seat back support body can be changed between the locked state and the released state, one of the positioning slots of the seat back support body is used for the positioning piece to be inserted, so that the seat back support body is in the locked state, and the user can rotate the seat back support body. The first operating rod, the first operating rod drives the first linkage and the second linkage to pivot relative to the connecting seat, the second linkage drives the driving elastic member, and drives the driving elastic through the driving elastic The positioning piece is used to separate the positioning piece from the positioning slot, and the seat back support is in a released state;

The seat support body can be changed between the first position and the second position. When the seat back support body is in the released state, the seat support body is in the first position, and the user sits on the seat seat and exerts force on the seat. Make the seat back support pivot relative to the base with the fixed shaft as the axis, and continue to apply force to the chair back so that the seat back support drives the seat support, so that the seat support From the first position to the second position, the distance between the top of the seat support and the bottom of the base is increased compared with the first position, thereby adjusting the top of the seat support and the base The distance between the bottom of the seat support and the distance between the top of the seat support and the bottom of the base are changed at the same time.

The chair adjusting device further includes a second adjusting device, the second adjusting device is assembled between the two sides of the base, the second adjusting device has a first driving member, a The second driving member, a fixed seat, a fixed shaft, and a second operating rod. The bottom is provided with a cylinder portion, and the cylinder portion can be assembled with a chair foot. The first driving member can pivot relative to the connecting seat. One end of the second driving member is against the first driving member, and the end of the second driving member opposite to the first driving member can selectively press the chair foot. The fixing seat is assembled at the bottom of the base and limited to Between the opposite ends of the second driving part, the user can rotate the second operating lever, so that the second operating rod drives the first driving part to pivot relative to the connecting seat, and the first driving part passes through the second operating rod to pivot. The second driving part presses the chair foot to change the relative height between the base and the chair foot.

In the above-mentioned chair adjusting device, two slide slots are formed on the bottom of the base from the second end toward the first end, and the slide slots accommodate one end of the seat back support.

The chair adjustment device, wherein the first adjustment device further includes a main elastic member and a cover, the main elastic member is elastic, the bottom is provided with a thrust seat, and one end of the main elastic member is assembled on The thrust seat, the other end of the main elastic part is assembled with the cover, so that the cover is arranged between the main elastic part and the back support body, and a top groove is recessed in the cover, and the two rocking plates A cross bar and a cross plate are arranged between, the cross plate connects the two rocking plates, the cross plate is provided with a transverse groove, and the cross bar is accommodated between the top groove of the bearing cover and the cross plate, so that the The main elastic member provides the supporting force of the chair back support body.

The chair adjustment device, wherein, the two sides are respectively provided with a first shaft hole adjacent to the first end, the connecting seat has a positioning part, and the cover positioning part is provided with a positioning hole, and the first linkage A first through hole is pierced by the connecting piece, and a second through hole is pierced by the second linking piece. The two ends of the connecting seat are respectively extended to form a joint part, and the connecting seat is respectively pierced with a through hole in the two joint parts. , the second through hole of the second linkage, the first through hole of the first linkage, and the first shaft hole on the side correspond to the through hole of the connecting seat, and one end of the first operating lever has a The piercing portion passes through the first shaft hole of the side portion and passes through the first through hole of the first linkage, the through hole of the connecting seat, and the second through hole of the second linkage in sequence. The hole is connected with the elastic piece that drives.

Said chair adjustment device, wherein, the two sides are adjacent to the second end to respectively pass through a second shaft hole, the seat supporting body has a front end and a rear end, and the two sides of the seat supporting body are formed by The front end extends to the rear end respectively to form a card part, and the card part has a second card hole adjacent to the rear end, the second card hole corresponds to the second shaft hole on the two sides, and the two card The second card hole of the card part has a first hole end and a second hole end, the second card hole of the card part and the second shaft holes of the two sides can allow two fixing screws to pass through, and the seat seat The supporting body is pivotally arranged on the base, and the second locking hole can slide relative to the fixing screw.

In the chair adjustment device, a third shaft hole is formed between the first shaft hole and the second shaft hole on the two sides, and a second straight hole is formed on the rocking plate. The second straight hole of the rocking plate corresponds to the third shaft hole of the two sides, the second straight hole of the two rocking plates and the third shaft hole of the two sides allow the fixed shaft to pass through, and the chair The back supporting body is pivotally arranged on the base.

The chair adjustment device, wherein, the two rocking plates are respectively provided with a first straight hole, and the two locking parts respectively have a first locking hole, and the first locking hole of the locking part is connected with the first locking hole of the rocking plate. The straight holes correspond to each other, and the first holes of the two locking parts and the first straight holes of the two rocking plates allow a fixed shaft to pass through, and the seat supporting body is pivotally arranged on the seat back supporting body.

The chair adjusting device, wherein, one end of the first operating rod has an operating part, and the operating part is held by the user to rotate the first operating rod, and the inner diameter of the penetrating part of the first operating rod is smaller than that of the first operating rod. The inner diameter of the operating part of an operating rod. The first linkage is radially recessed with a fixed groove from the first through hole. The first operating rod is provided with a pin hole in the penetrating part. The latch of the first operating rod The hole corresponds to the fixing groove of the first linkage, and the bolt hole allows a bolt to pass through, so that the first linkage is assembled on the first operating rod.

Said chair adjustment device, wherein, one end of the second operating rod has a control part, and the control part is held by the user to rotate the second operating rod, and the end of the second operating rod opposite to the control part has a A threading portion, the inner diameter of the threading portion is smaller than the inner diameter of the control portion of the second operating rod.

Other objects, advantages and novel features of the present invention will be more apparent from the following detailed description and associated drawings.

Description of drawings

Fig. 1 is the three-dimensional appearance diagram of the chair adjustment device of the present invention;

Fig. 2 is a three-dimensional exploded view of the chair adjusting device of the present invention;

Fig. 3 is a sectional view taken along section line 3-3 of Fig. 1;

Fig. 4 is a sectional view taken along section line 4-4 of Fig. 1;

Fig. 5 is a sectional view taken along section line 5-5 of Fig. 1;

Fig. 6 is a sectional view taken along section line 6-6 of Fig. 1;

Fig. 7 is a sectional view of the chair adjusting device of the present invention, showing that the chair back support is in a released state;

Fig. 8 is a schematic diagram of the operation of the chair adjusting device of the present invention, showing that the seat support body is in the first position;

Fig. 9 is a cross-sectional view of the chair adjustment device of the present invention, showing that the seat back support body is in a locked state;

Fig. 10 is a schematic diagram of the operation of the chair adjusting device of the present invention, showing that the seat support body is in the second position.

Explanation of reference signs; 1-chair adjustment device; 10-base; 101-first end; 102-second end; 11-bottom; 111-thrust seat; 112-cylinder; 12-side; 121 -the first shaft hole; 122-the second shaft hole; 123-the third shaft hole; 13-connecting seat; 131-positioning part; 132-positioning hole; -perforation; 14-sliding groove; 20-first adjustment device; 21-first linkage; 211-first surface; 212-second surface; 213-first through hole; 214-fixing groove; Shaft; 22-the second linkage; 221-the second through hole; 222-connecting part; 23-driving the elastic member; 24-positioning piece; 25-first operating rod; 251-operating part; 252-piercing part; 253-bolt hole; 254-bolt; 26-main elastic member; 7-cover; 31-the first driving part; 311-connecting hole; 312-resisting part; 313-stopping part; 32-second driving part; 33-fixing seat; Fixed shaft; 35-second operating lever; 351-controlling part; 352-connecting part; 40-back support body; Hole; 422-the second straight hole; 423-crossbar; 424-horizontal plate; 4241 transverse groove; 43-fixed shaft; 50-seat support body; 501-front end; 502-rear end; 51-top; 511-installation part; 52-clamping part; 521-first clamping hole; 522-second clamping hole; 5221-first hole end; 5222-second hole end; 53-fixed shaft; 531-fixed screw ; 2-chair legs.

Detailed ways

Regarding the technology, means and effects adopted by the present utility model, a preferred embodiment is given and described in detail below in conjunction with the drawings. This is only for illustration, and is not limited by this structure in the patent application.

Please refer to Figure 1 to Figure 4. Fig. 1 is a three-dimensional appearance view of the chair adjusting device of the present invention, Fig. 2 is a three-dimensional exploded view of the chair adjusting device of the present invention, Fig. 3 is a sectional view taken along section line 3-3 of Fig. 1, Fig. 4 It is a sectional view taken along the section line 4-4 in Fig. 1 .

The chair adjustment device 1 of the present invention includes a base 10, a first adjustment device 20, a second adjustment device 30, a back support 40 and a seat support 50; wherein:

The base 10 has a first end 101 and a second end 102, the base 10 extends from the first end 101 to the second end 102 to form a bottom 11, and the bottom 11 is adjacent to the first end 101. A thrust seat 111 , the bottom 11 is adjacent to the second end 102 is provided with a cylindrical portion 112 , and the cylindrical portion 112 is hollow.

The base 10 extends longitudinally from the first end 101 to the second end 102 on both sides of the bottom 11 to form a side portion 12 respectively, and a first shaft passes through the two side portions 12 adjacent to the first end 101 Holes 121, the two sides 12 adjacent to the second end 102 are respectively pierced with a second shaft hole 122, and the two sides 12 are respectively pierced with a first shaft hole 121 and the second shaft hole 122. Triaxial hole 123 .

The base 10 is provided with a connecting base 13 adjacent to the first end 101. The connecting base 13 has a positioning portion 131. The connecting base 13 is provided with a positioning hole 132 in the positioning portion 131. The connecting base 13 is positioned at the positioning portion 131. The two ends of the part 131 respectively extend to form a joint part 133, the joint part 133 is perpendicular to the positioning part 131, the joint part 133 has an outer wall surface 1331 and an inner wall surface 1332, the outer wall surface 1331 of the joint part 133 Opposite to the side part 12 , the inner wall surface 1332 of the joint part 133 is opposite to the inner wall surface 1332 of the other joint part 133 , and the connecting seat 13 is on the outer wall surface 1331 of one of the two joint parts 133 A through hole 134 is formed to the inner wall 1332 .

The bottom 11 of the base 10 passes through two sliding slots 14 from the second end 102 toward the first end 101 , and the sliding slots 14 are capable of accommodating the seat back support 40 .

Please refer to FIG. 5 and FIG. 6 at the same time. FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. 1 . Fig. 6 is a sectional view taken along section line 6-6 of Fig. 1 . The first adjusting device 20 is assembled between the two side parts 12 of the base 10, and the first adjusting device 20 has a first linking member 21, a second linking member 22, a driving elastic member 23, A positioning piece 24 , a first operating rod 25 , a main elastic member 26 and a bearing cover 27 .

The first linkage 21 is capable of pivoting relative to the connecting base 13 , and the first linkage 21 is assembled on the outer side of the side portion 12 of the base 10 and the connecting portion 133 of the connecting base 13 . Between the walls 1331, the first linkage 21 has a first surface 211 and a second surface 212, the first surface 211 of the first linkage 21 is opposite to the side portion 12, the first linkage The second surface 212 of the member 21 is opposite to the outer wall surface 1331 of the assembly part 133, and the first linkage member 21 passes through a first through hole 213 from the first surface 211 to the second surface 212. The first through hole 213 of a linkage 21 and the first shaft hole 121 of the side portion 12 correspond to the through hole 134 of the connecting seat 13 , and the first linkage 21 is formed by the first surface 211 on the first surface 211 . A fixing groove 214 is recessed in the radial direction of the through hole 213, and the fixing groove 214 communicates with the first through hole 213, and an insertion shaft 215 is axially protruded from the second surface 212 of the first linkage member 21. The insertion shaft 215 of a linkage 21 is connected to the second linkage 22 .

The second linkage 22 abuts against the inner wall surface 1332 of the assembly portion 133 of the connection base 13 , and the second linkage 22 can be driven by the first linkage 21 to pivot relative to the connection base 13 , The second link 22 passes through a second through hole 221 , the second through hole 221 of the second link 22 , the first through hole 213 of the first link 21 , the first through hole 213 of the side part 12 A shaft hole 121 corresponds to the through hole 134 of the connecting seat 13, and a connecting portion 222 protrudes axially from the second through hole 221 of the second linkage member 22, and the connecting portion 222 of the second linkage member 22 provides The insertion shaft 215 of the first linkage 21 passes through and assembles, so that the second linkage 22 and the first linkage 21 are connected to each other.

The driving elastic part 23 leans against the second linking part 22, and the driving elastic part 23 has elasticity. In this embodiment, the driving elastic part 23 is set as a spring, and one end of the driving elastic part 23 is assembled with the second The linking part 22 is opposite to the inner wall 1332 of the assembling part 133 of the connecting base 13 , and the end of the driving elastic part 23 opposite to the second linking part 22 is assembled with the positioning piece 24 .

The positioning piece 24 is inserted into the positioning hole 132 of the connecting seat 13 and can slide relative to the positioning hole 132. The positioning piece 24 has an upper top surface 241 and a lower top surface 242, and one end of the positioning piece 24 is connected by the upper surface. An insertion hole 243 is longitudinally pierced from the top surface 241 to the lower top surface 242, and the insertion hole 243 allows the end of the driving elastic member 23 opposite to the second linking member 22 to pass through and make the driving elastic member 23 latch on the On the upper top surface 241 , an end of the positioning piece 24 opposite to the insertion hole 243 is releasably inserted into the seat back supporting body 40 .

One end of the first operating lever 25 has an operating portion 251, the operating portion 251 of the first operating lever 25 is held by the user to rotate the first operating lever 25, the first operating lever 25 is opposite to the side of the operating portion 251 One end has a piercing portion 252 , the inner diameter of the piercing portion 252 of the first operating rod 25 is smaller than the inner diameter of the operating portion 251 of the first operating rod 25 , and the first operating rod 25 has a pin hole pierced in the piercing portion 252 253, the pin hole 253 of the first operating rod 25 corresponds to the fixing groove 214 of the first linkage 21, and the pin hole 253 allows a pin 254 to pass through, so that the first linkage 21 is set in the first linkage. An operating rod 25 , the penetrating portion 252 of the first operating rod 25 passes through the first shaft hole 121 of one side portion 12 of the base 10 and sequentially passes through the first through hole of the first linkage member 21 213 , the through hole 134 of the connecting seat 13 , the second through hole 221 of the second linkage member 22 and the driving elastic member 23 .

The main elastic member 26 has elasticity. In this embodiment, the main elastic member 26 is set as a spring. One end of the main elastic member 26 is assembled on the thrust seat 111 at the bottom 11 of the base 10. One end of the thrust seat 111 is assembled with the bearing cover 27 .

The bearing cover 27 is assembled between the main elastic member 26 and the seat back support 40, and a top groove 271 is recessed on the side of the bearing cover 27 opposite to the main elastic member 26. The top groove 271 of the bearing cover 27 For the seat back support body 40 to lean against.

The second adjustment device 30 is assembled between the two side parts 12 of the base 10, and the second adjustment device 30 has a first driver 31, a second driver 32, a fixed seat 33, a fixed shaft 34. A second operating lever 35.

The first driving member 31 can pivot relative to the connecting base 13 , and the first driving member 31 is assembled on the outer wall surface 1331 of the one side portion 12 of the base 10 and the connecting portion 133 of the connecting base 13 Between, the first driver 31 is pierced with a connection hole 311, the connection hole 311 of the first driver 31, the first shaft hole 121 of the side part 12 is corresponding to the through hole 134 of the connection seat 13, the first A driving member 31 radially extends along the connecting hole 311 to form an abutting portion 312 , and the abutting portion 312 can abut against and drive the second driving member 32 .

One end of the second driving member 32 abuts against the abutting portion 312 of the first driving member 31 , and the end of the second driving member 32 opposite to the first driving member 31 can selectively press the chair leg 2 .

The fixing seat 33 is assembled on the bottom 11 of the base 10 and is limited between two opposite ends of the second driving member 32 so that the second driving member 32 cannot be detached from the base 10 .

The fixing shaft 34 passes through the second driving member 32 so that the second driving member 32 is pivotally mounted on the base 10 . One end of the second operating lever 35 has a control portion 351, the operating portion 351 of the second operating lever 35 is held by the user to rotate the second operating lever 35, and the second operating lever 35 is opposite to the control portion 351. One end has a passing portion 352 , the inner diameter of the passing portion 352 of the second operating rod 35 is smaller than the inner diameter of the operating portion 351 of the second operating rod 35 , and the passing portion 352 of the second operating rod 35 passes through the base 10 The first shaft hole 121 of one side portion 12 of the first shaft hole 121 passes through the connecting hole 311 of the first driving member 31 .

One end of the chair back supporting body 40 can be assembled with a chair back (not shown in the figure), and the chair back supporting body 40 is pivotally arranged on the base 10, and the opposite end of the chair back supporting body 40 where the chair back is assembled has a front stop piece 41, the front blocking piece 41 has several positioning slots 411, in this embodiment, the positioning slots 411 are provided with three, one of the positioning slots 411 is for the positioning piece 24 to be inserted inside , to provide the positioning function of the chair back support body 40 when pivoting relative to the base 10, the seat back support body 40 is formed by extending from the two ends of the front block 41 relative to the two side parts 12 of the base 10 respectively to form a rocker plate 42, the rocking plate 42 is pierced with a first straight hole 421 and a second straight hole 422, the second straight hole 422 of the two rocking plates 42 corresponds to the third shaft hole 123 of the two side parts 12, the The second straight holes 422 of the two rockers 42 and the third shaft holes 123 of the two side parts 12 can allow a fixed shaft 43 to pass through, and the seat back support body 40 is pivotally mounted on the base 10. The two rockers A cross bar 423 and a cross plate 424 are arranged between the plates 42. The cross plate 424 connects the two rocking plates 42. The cross plate 424 is provided with a transverse groove 4241 so that the cross bar 423 is accommodated in the bearing cover 27. Between the top slot 271 and the horizontal plate 424 , and the cross bar 423 is partially accommodated and restricted in the horizontal slot 4241 , so that the main elastic member 26 provides the supporting force of the seat back support 40 .

One end of the seat support body 50 is pivotally arranged on the seat back support body 40 , and the opposite end of the seat support body 50 is pivotally arranged on the seat back support body 40 and one end is pivotally arranged on the base 10 , and the seat support body 50 Seats (not shown) can be assembled, the seat support 50 has a front end 501 and a rear end 502, the seat support 50 has a top 51, and the seat support 50 is set on the top 51 There are several installation parts 511, and the installation parts 511 can assemble the seat. The two sides of the seat support body 50 extend from the front end 501 to the rear end 502 respectively to form a card part 52, and the card part 52 is located at Between the side portion 12 of the base 10 and the rocker plate 42 of the seat back support 40, the two clamping portions 52 respectively have a first clamping hole 521 adjacent to the front end 501, and the first clamping hole 521 of the clamping portion 52 is Corresponding to the first straight hole 421 of the rocking plate 42, the first locking hole 521 of the two clamping parts 52 and the first straight hole 421 of the two rocking plate 42 can allow a fixed shaft member 53 to pass through, and the seat seat The supporting body 50 is pivotally disposed on the seat back supporting body 40 .

The clamping portion 52 has a second clamping hole 522 adjacent to the rear end 502. The second clamping hole 522 is an oval hole. 122, and the second locking hole 522 of the two locking parts 52 has a first hole end 5221 and a second hole end 5222, the second locking hole 522 of the locking part 52 and the second The shaft hole 122 can pass through two fixing screws 531 , the seat support 50 is pivotally disposed on the base 10 , and the second locking hole 522 can slide relative to the fixing screws 531 .

Please refer to Figures 7 to 10 at the same time. Figure 7 is a cross-sectional view of the chair adjustment device of the present invention, showing that the seat back support is in a released state. Figure 8 is a schematic diagram of the operation of the chair adjustment device of the present invention, showing the support The body is in the first position. Fig. 9 is a cross-sectional view of the chair adjusting device of the present invention, showing that the seat back support body is in a locked state. Fig. 10 is a schematic diagram of the operation of the chair adjusting device of the present invention, showing that the seat support body is in the second position.

The seat back support 40 is switchable between a locked state and a released state. One of the positioning slots 411 of the seat back support 40 is inserted into the positioning piece 24, so that the seat back support 40 is in a locked state, and passes through the two second locking holes 522 and the two second shafts. The two fixing screws 531 of the hole 122 abut against the first hole end 5221 of the second locking hole 522, when the seat back support 40 is in the locked state, the user can hold the first operating lever 25. The operating part 251 rotates the first operating lever 25 clockwise, so that the first operating lever 25 drives the first linkage 21 and the second linkage 22 to pivot relative to the connecting seat 13, and the second linkage The member 22 drives the driving elastic member 23, and the positioning piece 24 is driven by the driving elastic member 23, so that the positioning piece 24 is disengaged from the positioning slot 411, and the seat back supporting body 40 is in a released state.

The seat supporting body 50 can be transformed between a first position and a second position. The seat support body 50 can be assembled with a seat (not shown in the figure). When the seat back support body 40 is in the released state, the seat support body 50 is in the first position, and the user can sit on the seat seat. And use the back of the user to apply force to the chair back, so that the chair back support 40 pivots relative to the base 10 with the fixed shaft 43 as the axis, and the sliding groove 14 of the base 10 can accommodate the chair. The rocker 42 of the back support 40, the cross bar 423 of the rocker 42 presses against the top groove 271 of the cover 27, so that the main elastic member 26 is compressed by the back support 40, and the user continues to exert force on the chair. Back, make the seat back support 40 drive the seat support 50 with the fixed shaft 53 passing through the two first clamping holes 521 and the two first straight holes 421 as the axis, so that the seat support 50 Transition from the first position to the second position. And the two fixing screws 531 passing through the two second clamping holes 522 and the two second shaft holes 122 abut against the second hole end 5222 of the second clamping hole 522, and the positioning piece 24 pushes against the front The lower edge of the stopper 41 makes the seat back support 40 in the locked state, thereby increasing the distance between the top 51 of the seat support 50 and the bottom 11 of the base 10, and at the same time changing the position of the seat back relative to the base 10. and changing the distance between the top 51 of the seat support 50 and the bottom 11 of the base 10 .

The cylindrical portion 112 of the base 10 can be assembled with the chair leg 2 . The user can hold the control portion 351 of the second operating lever 35 and turn the second operating lever 35 clockwise, so that the second operating lever 35 drives the first driving member 31 to pivot relative to the connecting seat 13 , the By abutting against one end of the second driving member 32, the first driving member 31 makes the second driving member 32 pivot relative to the base 10, and makes the second driving member 32 press against the chair against the end of the first driving member 31. foot 2, thereby changing the relative height between the base 10 and the chair foot 2.

From the above, it can be concluded that the chair adjustment device of the present invention has the following advantages:

1. In the chair adjustment device of the present invention, the seat back support body can be switched between a locked state and a released state. One of the positioning slots of the seat back support body is inserted into the positioning piece, so that the seat back support body is in a locked state, and passes through the two second clamping holes and the two second shaft holes. The fixing screw abuts against the first hole end of the second clamping hole, and when the seat back support is in the locked state, the user can hold the operating portion of the first operating lever and turn the first operating lever clockwise , so that the first operating rod drives the first linkage and the second linkage to pivot relative to the connecting seat, the second linkage drives the driving elastic member, and drives the positioning through the driving elastic piece, the positioning piece is disengaged from the positioning slot, and the seat back support is in a released state.

The seat supporting body can be changed between a first position and a second position. The seat support body can be assembled with a seat seat. When the seat back support body is in the released state, the seat support body is in the first position, and the user can sit on the seat seat and exert force on the seat with the user's back. The chair back is used to make the chair back supporting body pivot relative to the base with the fixed shaft as the axis, the sliding groove of the base can accommodate the rocking plate of the chair back supporting body, and the cross bar of the rocking plate presses When the main elastic member is pressed against the top groove of the cover, the back support is compressed by the user, and the user continues to apply force to the back, so that the back support passes through the two first clamping holes and the two first straight The fixed shaft part of the hole drives the seat support body as an axis, so that the seat support body changes from the first position to the second position. And the two fixing screws passing through the two second clamping holes and the two second shaft holes lean against the second hole end of the second clamping hole, and the positioning piece pushes against the lower edge of the front blocking piece to make the chair The back support is in a locked state.

2. In the chair adjustment device of the present invention, the user can hold the control part of the second operating lever and turn the second operating lever clockwise, so that the second operating lever drives the first driving member relative to the connecting seat Pivoting, the first driving member abuts against one end of the second driving member, so that the second driving member pivots relative to the base, and makes the second driving member press the chair foot against the end of the first driving member, Thereby, the relative height between the base and the chair legs can be changed.

But the above is only a preferred embodiment of the present utility model, and should not limit the scope of the utility model implementation, so the change of the numerical values or the replacement of equivalent components, or the application made according to the patent scope of the utility model The equal changes and modifications should all still belong to the category covered by the patent for the present invention.

Claims (10)

1. a chair tool adjusting device is characterized in that, comprising:

A pedestal; It has one first end and one second end; This pedestal extends to this second end by this first end and forms a bottom, and this pedestal forms a sidepiece by this first end to this second end difference longitudinal extension in this two bottom sides limit, and this pedestal has a Connection Block;

One first adjusting device; It is mounted on this pedestal; This first adjusting device has one first moving part, second moving part, a drive elastic component, a spacer, first action bars; This first moving part this Connection Block relatively pivots; This second moving part can by this first moving part drive and relatively this Connection Block pivot, this first action bars is through this pedestal sidepiece wherein and wear this first moving part, this Connection Block, this second moving part and this drive elastic component in regular turn;

A back support body; The one of which end can be organized and establish the chair back, and in this this spacer one end of back support body confession was inserted in releasedly, an end of the opposite chair back of this back support body had a preceding catch; Should have several location slots by preceding catch; This back support body relatively extends to form a rocker respectively in the both sides of this pedestal by these preceding catch two ends, and one of these two rockers and the confession of this both sides fixedly axle center part are passed through, and make this back support body be hubbed at this pedestal; And

A seat support supporter, one of which end are hubbed at this back support body, and this seat support supporter other end is hubbed at this pedestal, and this seat support supporter has a top;

This back support body can conversion between lock-out state and release conditions; The location slot of this back support body one of them supply this spacer to plug; Make this back support body be positioned at lock-out state, the user can rotate this first action bars, and this first action bars drives relative this Connection Block with this second moving part of this first moving part and pivots; This second moving part drives and should drive elastic component; And, making this spacer break away from this location slot through this this spacer of drive elastic component drive, this back support body is positioned at release conditions;

This seat support supporter can conversion between the primary importance and the second place; When this back support body is positioned at release conditions; This seat support supporter is positioned at primary importance; The user is seated on the seat support and forces in the chair back, make this back support body with this fixedly the axle center part to be the axle center pivot with respect to this pedestal, continue to force in the chair back and make this back support body drive this seat support supporter; Make this seat support supporter be converted into the second place by primary importance; This moment, the distance of bottom of top and this pedestal of this seat support supporter increased during compared to primary importance, adjusted the distance of bottom of top and this pedestal of this seat support supporter thus, changed the chair back simultaneously with respect to the angle of this pedestal and change the distance between the bottom of top and this pedestal of this seat support supporter.

2. chair tool adjusting device as claimed in claim 1 is characterized in that, more includes one second adjusting device; This second adjusting device is mounted between the both sides of this pedestal; This second adjusting device has one first drivening piece, second drivening piece, a holder, a fixed axis, second action bars, and this bottom is provided with a tube portion, and this one can organize and establish the chair pin; This first drivening piece this Connection Block relatively pivots; This second drivening piece, one end is resisted against this first drivening piece, and this second drivening piece is in contrast to an end of this first drivening piece chair pin that can optionally bear down on one, and this holder is mounted on the bottom of this pedestal and is limited between the opposite two ends of this second drivening piece; The user can rotate this second action bars; Make this second action bars drive this first drivening piece and pivot with respect to this Connection Block, this first drivening piece changes the relative altitude between this pedestal and the chair pin through this second drivening piece this chair pin that bears down on one.

3. chair tool adjusting device as claimed in claim 1 is characterized in that this pedestal wears two sliding trays by this second end towards this first end in this bottom, ccontaining this back support body one end of this sliding tray.

4. chair tool adjusting device as claimed in claim 1 is characterized in that, this first adjusting device comprises that a more main elastic component and one hold lid; This main elastic component has elasticity, and this bottom is provided with a thrust block seat, and this main elastic component one end is mounted on this thrust block seat; This main elastic component other end group is established this and is held lid, makes this hold and is covered between this main elastic component and this back support body, and this holds lid and is arranged with an inverted draw cut; Be provided with a cross bar and a transverse slat between this two rocker, this transverse slat links this two rocker, and this transverse slat is provided with a translot; This cross bar is placed between this inverted draw cut that holds lid and this transverse slat, makes this main elastic component that this back support body support force is provided.

5. chair tool adjusting device as claimed in claim 1; It is characterized in that contiguous this first end in these both sides wears one first axis hole respectively, this Connection Block has a location division; The lid location division wears a locating hole; This first moving part wears one first through hole, and this second moving part wears one second through hole, and these Connection Block two ends extend to form a group connecting part respectively; This Connection Block wears a perforation respectively in this two group connecting part; First axis hole of second through hole of this second moving part, first through hole of this first moving part, this sidepiece is corresponding with the perforation of this Connection Block, and this first action bars, one end has one and wears portion, this wear portion through this sidepiece first axis hole and wear first through hole of this first moving part, the perforation of this Connection Block, second through hole and this drive elastic component of this second moving part in regular turn.

6. chair tool adjusting device as claimed in claim 5; It is characterized in that; Contiguous this second end in these both sides wears one second axis hole respectively, and this seat support supporter has a front end and a rear end, and this seat support supporter dual-side extends to this rear end by this front end and extends to form a card division respectively; Contiguous this rear end, this card division has one second hole clipping; This second hole clipping is corresponding with second axis hole of these both sides, and second hole clipping of this two card division has one first nose end and one second nose end, second hole clipping of this card division and second axis hole of these both sides can supply two fixedly spiral shell spare pass through; This seat support supporter is hubbed at this pedestal, and this second hole clipping can be somebody's turn to do fixedly spiral shell spare slippage relatively.

7. chair tool adjusting device as claimed in claim 6; It is characterized in that; These both sides wear a Triaxial hole respectively between this first axis hole and this second axis hole, this rocker wears one second straight hole, and second straight hole of this two rocker is corresponding with the Triaxial hole of these both sides; Second straight hole of this two rocker and the confession of the Triaxial hole of these both sides fixedly axle center part are passed through, and this back support body is hubbed at this pedestal.

8. chair tool adjusting device as claimed in claim 7; It is characterized in that; This two rocker wears one first straight hole respectively, and this two card division has one first hole clipping respectively, and first hole clipping of this card division is corresponding with first straight hole of this rocker; First hole clipping of this two card division and first straight hole of this two rocker supply a fixed shaft to pass through, and this seat support supporter is hubbed at this back support body.

9. chair tool adjusting device as claimed in claim 8; It is characterized in that this first action bars, one end has an operating portion, this operating portion supplies the user to grip to rotate this first action bars; The portion that the wears internal diameter of this first action bars is less than the operating portion internal diameter of this first action bars; This first moving part radially is arranged with a holddown groove by this first through hole, and this first action bars a pin hole in this portion of wearing, and the pin hole of this first action bars is corresponding with the holddown groove of this first moving part; This pin hole supplies a latch to pass through, and makes this first moving part be mounted on this first action bars.

10. chair tool adjusting device as claimed in claim 2; It is characterized in that; This second action bars, one end has one and controls portion; This portion of controlling supplies the user to grip to rotate this second action bars, and this second action bars has a cross-under portion in contrast to this end of controlling portion, and this cross-under portion internal diameter is less than the portion that the controls internal diameter of this second action bars.

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