Single drive head waist rest mechanism

Abstract

The application relates to the field of recliners, in particular to a single-drive headrest and waist support mechanism, which comprises a headrest frame arranged at the upper part of a chair back and a waist support frame arranged at the lower part of the chair back, further comprises a driving assembly and a mounting frame, the mounting frame is arranged on a frame body arranged in the interior of the chair back, the headrest frame and the waist support frame are arranged to comprise a support and a backrest arranged on the support, the support is rotationally connected to the mounting frame, and the driving assembly is used for driving the rotation of the two supports. The application can facilitate the head and waist support of different users or different requirements, so as to improve the use effect of the recliner.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of recliners, in particular to a single drive headrest and lumbar support mechanism. BACKGROUND

[0002] Nowadays, the use of recliners has become more and more common, and a recliner usually comprises a seat and a backrest connected to each other, so that a user can lean against the backrest when sitting on the seat, thereby having better comfort.

[0003] In addition, in order to meet the pursuit of comfort of recliners, a headrest frame and a lumbar support frame are often arranged on the backrest, both of which are fixedly connected to a frame in the backrest, and the headrest frame is located at the upper part of the backrest, and the lumbar support frame is located at the lower part of the backrest. When leaning against the backrest, the headrest frame can be placed on the head to support the head, and the lumbar support frame can support the user's waist, thereby increasing the comfort of the recliner when used.

[0004] However, in actual use, it is difficult to adjust the height or angle of the headrest frame and the lumbar support frame when facing different needs of different users, thereby making it difficult to adapt to the needs of different users for support, and the use effect of the recliner needs to be improved. SUMMARY

[0005] In order to adapt to the head and waist support of different users or different needs and improve the use effect of the recliner, the present application provides a single drive headrest and lumbar support mechanism.

[0006] The single drive headrest and lumbar support mechanism provided by the present application adopts the following technical scheme:

[0007] A single drive headrest and lumbar support mechanism, comprising a headrest frame arranged at the upper part of the backrest and a lumbar support frame arranged at the lower part of the backrest, further comprising a driving assembly and a mounting frame, the mounting frame is arranged on the frame in the backrest, the headrest frame and the lumbar support frame are both arranged to comprise a support and a rest plate mounted on the support, the support is rotatably connected to the mounting frame, and the driving assembly is used to drive the two supports to rotate.

[0008] By adopting the above technical scheme, during use, the supports in the headrest frame and the supports in the lumbar support frame can be controlled to rotate by the driving assembly, thereby adjusting the height and deflection angle of the headrest plate and the lumbar support plate, so as to adapt to the head and waist support of different users and different needs, and the use effect of the recliner is better.

[0009] Optionally, the driving assembly comprises a motor and a driving shaft, the driving shaft is rotatably connected to the mounting frame, the motor is used to drive the driving shaft to rotate, the driving shaft is coaxially provided with two transmission gears, the two transmission gears are arranged corresponding to the two supports respectively, and the transmission gears are engaged with a gear set for driving the supports to rotate.

[0010] By adopting the technical scheme, when in use, the opened motor can control the rotation of the driving shaft, and then drive the rotation of the two transmission gears, and then drive the rotation of the two supports under the transmission of the gear set, and then adjust the positions of the backrests of the head and the waist, thereby improving the use effect; one power source can simultaneously control the position adjustment of the two backrests, the use effect is better, and the energy loss is reduced.

[0011] Optionally, the transmission gear is rotationally connected to the mounting frame, a clamping hole is formed in the middle of the transmission gear, and the driving shaft penetrates the clamping hole, two connecting rings are sleeved and slidably connected to the driving shaft, the two connecting rings are respectively arranged corresponding to the two transmission gears, and the connecting ring is fixedly connected with a clamping block for clamping into the clamping hole.

[0012] By adopting the technical scheme, one or two connecting rings can be controlled to slide, the clamping block on the connecting ring is clamped in the clamping hole, one or two transmission gears are connected with the driving shaft, and then the backrest of the head and / or the backrest of the waist can be controlled to adjust the position, that is, the backrest of the head and the backrest of the waist can be adjusted simultaneously, or the backrest of the head or the backrest of the waist can be adjusted alone, thereby further facilitating the use of the user.

[0013] Optionally, a sliding groove extending along the axial direction of the driving shaft is formed in the outer wall of the driving shaft, and the connecting ring is clamped in the sliding groove.

[0014] By adopting the technical scheme, the sliding groove can limit the rotation of the connecting ring relative to the driving shaft, so that the driving effect of the driving shaft on the connecting ring is better.

[0015] Optionally, the gear set comprises a driven gear, a worm and a worm wheel, the worm wheel is coaxially installed on the rotating part of the support, the driven gear is engaged with the transmission gear, and the worm is fixed on the same shaft as the driven gear and engaged with the worm wheel.

[0016] By adopting the technical scheme, when in use, the transmission gear can drive the rotation of the driven gear, and then drive the rotation of the worm, so that the worm can drive the rotation of the worm wheel, thereby achieving the purpose of controlling the rotation of the support, and adjusting the position of the backrest; and when the transmission gear stops rotating, the worm wheel has a rotation locking effect due to the meshing action between the worm wheel and the worm, so that the support can be relatively stably located at the position, and the use effect is better.

[0017] Optionally, the connecting ring is provided with a pushing ring, the pushing ring is sleeved and slidably connected to the driving shaft, a jacking spring is arranged between the pushing ring and the connecting ring, and the two ends of the jacking spring are respectively connected to the pushing ring and the connecting ring.

[0018] By adopting the technical scheme, the pushing ring slides towards the transmission gear, at this time, the pushing ring can simultaneously push the pushing spring and the connecting ring to slide towards the transmission gear, and the elastic contact between the connecting ring and the transmission gear is formed, with the rotation of the driving shaft, when the clamping hole corresponds to the clamping block, the clamping block can be automatically clamped into the clamping hole under the pushing of the pushing spring, thereby realizing the connection between the transmission gear and the driving shaft, so that the driving shaft can control the rotation of the support, thereby achieving the purpose of adjusting the headrest or the waistrest.

[0019] Optionally, the pushing ring is provided with a control rod, the control rod is slidingly connected to the mounting frame and one end is used to pass out to the outside of the chair back, and the pushing ring is rotationally connected to the control rod.

[0020] By adopting the technical scheme, during use, the sliding of the pushing ring can be controlled by sliding the control rod, thereby realizing the connection and disconnection between the transmission gear and the driving shaft, so as to facilitate the adjustment of the headrest or the waistrest.

[0021] Optionally, along the rotation direction of the driving shaft, the clamping hole and the clamping block are arranged with a gap.

[0022] By adopting the technical scheme, during the rotation of the driving shaft, the clamping hole can provide a larger avoiding space for the clamping block, so as to facilitate the clamping of the clamping block into the clamping hole, and make the connection between the transmission gear and the driving shaft more convenient.

[0023] Optionally, the control rod is provided with a counter pushing spring, and the counter pushing spring is used to pull the control rod away from the transmission gear.

[0024] By adopting the technical scheme, after the control rod is slid to adjust the headrest or the waistrest, the counter pushing spring can pull the control rod away from the transmission gear when the hand is released, thereby automatically releasing the clamping between the clamping block and the clamping hole, and disconnecting the transmission effect between the transmission gear and the driving shaft, so that each adjustment of the position of the rest is relatively independent, thereby reducing the possibility of interference on subsequent adjustment, and making the control effect better.

[0025] Optionally, the two control rods are located between the two transmission gears, a pressing column is arranged between the two control rods, the pressing column is slidingly installed on the chair back, the pressing column is rotationally connected with two push rods, the two push rods abut against the two control rods respectively, and the pressing column is provided with a reset spring used to push the pressing column to reset.

[0026] By adopting the above technical solution, when only the headrest or waistrest needs to be adjusted, only the corresponding control lever needs to be slid. When the headrest and waistrest need to be adjusted at the same time, the pressing column can be pressed, and the push rod will swing under the restriction of the overlapping block, so that the two push rods can push the two control levers to slide respectively, thereby achieving the purpose of connecting the two transmission gears to the drive shaft at the same time, so as to control the adjustment of the headrest and waistrest at the same time.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During use, the drive component can control the rotation of the brackets in the headrest and the lumbar support, thereby adjusting the height and tilt angle of the headrest and lumbar support, so as to adapt to different users and different needs to support the head and waist, making the chair more effective.

[0029] 2. During use, one or two connecting rings can be slidably controlled, so that the locking blocks on the connecting rings are engaged in the locking holes, so that one or two transmission gears are connected to the drive shaft, thereby controlling the position adjustment of the headrest and / or waistrest, further facilitating the user's use. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the installation structure according to an embodiment of this application;

[0031] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle;

[0032] Figure 3 This is a schematic diagram of the installation structure of the pressing column according to an embodiment of this application;

[0033] Figure 4 yes Figure 3 A magnified structural diagram of part B in the middle section;

[0034] Figure 5 yes Figure 1 A magnified structural diagram of section C.

[0035] Explanation of reference numerals in the attached drawings: 1. Bracket; 2. Backing plate; 3. Drive assembly; 31. Motor; 32. Drive shaft; 321. Slide groove; 33. Transmission gear; 331. Snap-fit ​​hole; 332. Connecting ring; 333. Snap block; 334. Push ring; 335. Push spring; 336. Control rod; 337. Snap-fit ​​ring; 338. Back thrust spring; 34. Gear set; 341. Driven gear; 342. Worm gear; 343. Worm wheel; 4. Mounting bracket; 5. Pressing column; 51. Push rod; 511. Overlapping block; 52. Return spring. DETAILED DESCRIPTION

[0036] The application will be further described below in conjunction with the accompanying drawings. Figures 1-5 The application will be further described below in conjunction with the accompanying drawings.

[0037] The single-drive headrest and lumbar support mechanism is disclosed in the embodiments of the application. Referring to Figure 1 The single-drive headrest and lumbar support mechanism comprises a headrest frame, a lumbar support frame, a driving assembly 3 and a mounting frame 4. The mounting frame 4 is mounted on a frame body inside the backrest, the headrest frame comprises a support 1 and a rest plate 2, the rest plate 2 is mounted on the support 1, the support 1 is rotationally connected to the mounting frame 4, and the rest plate 2 in the headrest frame is located at the upper part of the backrest; the lumbar support frame is also provided with a support 1 and a rest plate 2, the rest plate 2 is mounted on the support 1, the support 1 is rotationally connected to the mounting frame 4, and the rest plate 2 in the lumbar support frame is located at the lower part of the backrest. The driving assembly 3 is mounted on the mounting frame 4, and the driving assembly 3 can simultaneously drive the two supports 1 to rotate.

[0038] In use, the driving assembly 3 can control the rotation of the supports 1 in the headrest frame and the supports 1 in the lumbar support frame, thereby adjusting the height and deflection angle of the head rest plate 2 and the lumbar rest plate 2, so as to facilitate the support of the head and the lumbar for different users and different needs, and make the use effect of the recliner better.

[0039] Referring to Figure 1 At this time, the driving assembly 3 comprises a motor 31 and a driving shaft 32, the driving shaft 32 is rotationally connected to the mounting frame 4, the motor 31 is mounted on the mounting frame 4, and the driving shaft 32 is connected to the output end of the motor 31 through a plurality of meshing gears, so that the motor 31 can drive the driving shaft 32 to rotate. At this time, the driving shaft 32 is coaxially provided with two transmission gears 33, the two transmission gears 33 are respectively arranged corresponding to the two supports 1, and a gear set 34 is arranged between the transmission gears 33 and the supports 1.

[0040] In use, the motor 31 can control the rotation of the driving shaft 32, thereby simultaneously driving the two transmission gears 33 to rotate, and then under the transmission action of the gear set 34, the two supports 1 can be simultaneously driven to rotate, thereby adjusting the positions of the head rest plate 2 and the lumbar rest plate 2, and improving the use effect. One power source can simultaneously control the position adjustment of the two rest plates 2, so that the use effect is better, and the energy loss is reduced.

[0041] In other embodiments, the driving assembly 3 can also be provided with a motor 31 and two rotating shafts connected to the output end of the motor 31, and the two rotating shafts are respectively arranged corresponding to the two supports 1. The motor 31 can control the rotation of the two supports 1, thereby achieving the purpose of controlling the adjustment of the head rest plate 2 and the lumbar rest plate 2.

[0042] Referring to Figure 1 and Figure 2, in order to further improve the control effect of the head rest 2 and the waist rest 2, and to further improve the use effect. The transmission gear 33 is rotationally connected to the mounting frame 4, and a clamping hole 331 is formed in the middle of the transmission gear 33. The driving shaft 32 penetrates the clamping hole 331, and the clamping hole 331 and the driving shaft 32 are gap arranged, so that the driving shaft 32 cannot directly drive the transmission gear 33 to rotate under normal circumstances. The driving shaft 32 is sleeved and slidingly connected with two connecting rings 332, and the two connecting rings 332 are respectively arranged corresponding to the two transmission gears 33. The connecting ring 332 is fixedly connected with a clamping block 333, so that when the connecting ring 332 slides, the clamping block 333 can be clamped with the clamping hole 331.

[0043] The outer wall of the driving shaft 32 is provided with a sliding groove 321 extending along the axial direction of the driving shaft 32, and the connecting ring 332 is clamped in the sliding groove 321.

[0044] In use, one or two connecting rings 332 can be slidingly controlled, so that the clamping block 333 on the connecting ring 332 is clamped in the clamping hole 331, so that one or two transmission gears 33 are connected with the driving shaft 32, and then the position of the head rest 2 and / or the waist rest 2 can be adjusted, that is, the head rest 2 and the waist rest 2 can be adjusted simultaneously, or the head rest 2 or the waist rest 2 can be adjusted alone, thereby further facilitating the use of the user.

[0045] Moreover, the sliding groove 321 arranged can limit the rotation of the connecting ring 332 relative to the driving shaft 32, so that the driving effect of the driving shaft 32 on the connecting ring 332 is better. In other embodiments, a limiting convex strip extending along the axial direction of the driving shaft 32 can be fixedly connected to the outer wall of the driving shaft 32, and the connecting ring 332 is clamped with the limiting convex strip.

[0046] Referring to Figure 2 The connecting ring 332 is provided with a pushing ring 334, and the pushing ring 334 is sleeved and slidingly connected with the driving shaft 32. The pushing ring 334 is located on the side of the connecting ring 332 away from the transmission gear 33. A pushing spring 335 is arranged between the pushing ring 334 and the connecting ring 332, and the two ends of the pushing spring 335 are respectively connected with the pushing ring 334 and the connecting ring 332.

[0047] When it is needed to connect the transmission gear 33 with the driving shaft 32, the pushing ring 334 is only needed to slide towards the transmission gear 33, at this time, the pushing ring 334 can simultaneously push the jacking spring 335 and the connecting ring 332 to slide towards the transmission gear 33, and the elastic contact between the connecting ring 332 and the transmission gear 33 can be realized, and when the clamping hole 331 corresponds to the clamping block 333, the clamping block 333 can be automatically clamped into the clamping hole 331 under the pushing of the jacking spring 335, thereby realizing the connection between the transmission gear 33 and the driving shaft 32, so that the driving shaft 32 can control the rotation of the support 1, thereby realizing the purpose of adjusting the headrest backboard 2 or the waist rest backboard 2, and the connection between the control transmission gear 33 and the driving shaft 32 is more convenient, and the possibility of damaging the clamping block 333 is smaller.

[0048] At the same time, along the rotation direction of the driving shaft 32, the clamping hole 331 and the clamping block 333 are arranged with a gap. The clamping hole 331 can provide a larger avoiding space for the clamping block 333 in the process of rotation of the driving shaft 32, so as to facilitate the clamping block 333 to be clamped into the clamping hole 331, and the connection between the transmission gear 33 and the driving shaft 32 is more convenient.

[0049] In order to improve the control effect of the pushing ring 334 on the connecting ring 332, a limiting groove can also be arranged on the pushing ring 334, so that the connecting ring 332 is clamped with the limiting groove, and the connecting ring 332 can slide within the range of the limiting groove.

[0050] Referring to Figure 1 and Figure 3 , the pushing ring 334 is provided with a control rod 336, the control rod 336 is slidingly connected to the mounting frame 4, and one end of the control rod 336 away from the pushing ring 334 extends to the outside of the chair back. The one end of the control rod 336 towards the pushing ring 334 is fixedly connected with a clamping ring 337, the inner wall of the clamping ring 337 is provided with a ring groove, the pushing ring 334 is penetratingly and rotationally connected to the clamping ring 337, and the pushing ring 334 is clamped with the ring groove.

[0051] In use, the sliding of the pushing ring 334 can be controlled by sliding the control rod 336, thereby realizing the connection and disconnection between the transmission gear 33 and the driving shaft 32, so as to facilitate the adjustment of the headrest support or the waist rest support.

[0052] Referring to Figure 3At this time, the control rod 336 is provided with a reverse push spring 338, and the two ends of the reverse push spring 338 are connected to the control rod 336 and the mounting frame 4 respectively, so that the reverse push spring 338 can pull the control rod 336 away from the transmission gear 33. Further, after the headrest 2 or the waist rest 2 is adjusted, the reverse push spring 338 can pull the control rod 336 away from the transmission gear 33 when the hand is released, thereby automatically releasing the clamping between the clamping block 333 and the clamping hole 331, and disconnecting the transmission effect between the transmission gear 33 and the driving shaft 32, so that each time the position of the rest 2 is adjusted, it is relatively independent, thereby reducing the possibility of interference on subsequent adjustment, and the control effect is better.

[0053] With reference to Figure 3 and Figure 4 In order to facilitate the simultaneous control of the sliding of the two control rods 336, the two transmission gears 33 are connected to the driving shaft 32 at the same time. The two control rods 336 are arranged between the two transmission gears 33 at the same time, and a pressing column 5 is arranged between the two control rods 336 at this time. The pressing column 5 is connected to the chair back and extends outward from one end of the chair back. The pressing column 5 is rotatably connected with two push rods 51, and the two push rods 51 are arranged corresponding to the two control rods 336. The side of the push rod 51 away from the control rod 336 is provided with a lap joint block 511, and the lap joint block 511 is fixedly connected to the mounting frame 4. The end of the push rod 51 away from the pressing column 5 abuts against the side of the control rod 336 away from the transmission gear 33. In addition, the pressing column 5 is provided with a reset spring 52, and the two ends of the reset spring 52 are connected to the pressing column 5 and the chair back respectively.

[0054] When only single control of the headrest 2 or the waist rest 2 adjustment is needed, only the sliding of the corresponding control rod 336 needs to be controlled. When the headrest 2 and the waist rest 2 need to be controlled at the same time, the pressing column 5 can be pressed, and the push rod 51 will swing under the limitation of the lap joint block 511, so that the two push rods 51 can push the two control rods 336 to slide respectively, thereby achieving the purpose of connecting the two transmission gears 33 to the driving shaft 32 at the same time, so as to control the headrest 2 and the waist rest 2 at the same time.

[0055] With reference to Figure 5 The gear set 34 includes a driven gear 341, a worm 342 and a worm wheel 343. The worm wheel 343 is coaxially installed on the rotating part of the support 1. The driven gear 341 is engaged with the transmission gear 33. The worm 342 is rotatably connected to the mounting frame 4. The worm 342 is fixed on the same shaft as the driven gear 341 and is engaged with the worm wheel 343.

[0056] When in use, the transmission gear 33 can drive the driven gear 341 to rotate, and then drive the worm 342 to rotate, so that the worm 342 can drive the worm gear 343 to rotate, thereby achieving the purpose of controlling the rotation of the support 1, thereby adjusting the position of the backrest 2. Moreover, when the transmission gear 33 stops rotating, due to the meshing effect between the worm gear 343 and the worm 342, the worm gear 343 has a rotation locking effect, so that the support 1 can be relatively stably positioned at the position, and the use effect is better.

[0057] The implementation principle of the single-drive head backrest mechanism according to an embodiment of the present application is as follows: when only the head backrest 2 or the waist backrest 2 needs to be adjusted, only the corresponding control rod 336 needs to be controlled to slide. When the head backrest 2 and the waist backrest 2 need to be adjusted at the same time, the press column 5 is pressed, thereby achieving the purpose of connecting the two transmission gears 33 and the driving shaft 32.

[0058] Then, the motor 31 is started to control the driving shaft 32 to rotate, thereby driving one or two transmission gears 33 to rotate, and then under the transmission effect of the gear set 34, the position of the head backrest 2 and / or the waist backrest 2 is adjusted, thereby facilitating the support of the head and the waist for different users and different needs, improving the use effect of the recliner, and enabling one power source to control the position adjustment of the two backrests 2 at the same time, thereby improving the use effect and reducing the energy loss.

[0059] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A single-drive headrest and lumbar support mechanism, comprising a headrest frame disposed on the upper part of the chair back and a lumbar support frame disposed on the lower part of the chair back, characterized in that: It also includes a drive assembly (3) and a mounting bracket (4), the mounting bracket (4) being used to install on a frame inside the chair back, the headrest and lumbar support being configured to include a bracket (1) and a backrest plate (2) mounted on the bracket (1), the bracket (1) being rotatably connected to the mounting bracket (4), and the drive assembly (3) being used to drive the two brackets (1) to rotate. The drive assembly (3) includes a motor (31) and a drive shaft (32). The drive shaft (32) is rotatably connected to the mounting bracket (4). The motor (31) is used to drive the drive shaft (32) to rotate. The drive shaft (32) is coaxially mounted with two transmission gears (33). The two transmission gears (33) are respectively set for the two brackets (1). The transmission gears (33) are meshed with a gear set (34) for driving the bracket (1) to rotate. The transmission gear (33) is rotatably connected to the mounting bracket (4). The transmission gear (33) has a snap-fit ​​hole (331) in the middle, and the drive shaft (32) passes through the snap-fit ​​hole (331). The drive shaft (32) is fitted with and slidably connected to two connecting rings (332). The two connecting rings (332) are respectively set for the two transmission gears (33). The connecting rings (332) are fixedly connected with a snap-fit ​​block (333) for snapping into the snap-fit ​​hole (331).

2. The single-drive headrest and lumbar support mechanism according to claim 1, characterized in that: The outer wall of the drive shaft (32) is provided with a groove (321) extending along its own axial direction, and the connecting ring (332) is engaged in the groove (321).

3. The single-drive headrest and lumbar support mechanism according to claim 1, characterized in that: The gear set (34) includes a driven gear (341), a worm (342) and a worm wheel (343). The worm wheel (343) is coaxially mounted on the rotating part of the bracket (1). The driven gear (341) meshes with the transmission gear (33). The worm (342) is coaxially fixed with the driven gear (341) and meshes with the worm wheel (343).

4. The single-drive headrest and lumbar support mechanism according to claim 1, characterized in that: The connecting ring (332) is provided with a push ring (334), which is sleeved and slidably connected to the drive shaft (32). A push spring (335) is provided between the push ring (334) and the connecting ring (332), with the two ends of the push spring (335) connected to the push ring (334) and the connecting ring (332) respectively.

5. The single-drive headrest and lumbar support mechanism according to claim 4, characterized in that: The push ring (334) is provided with a control rod (336), the control rod (336) is slidably connected to the mounting bracket (4) and one end is used to extend to the outside of the chair back, and the push ring (334) is rotatably connected to the control rod (336).

6. The single-drive headrest and lumbar support mechanism according to claim 4, characterized in that: Along the rotation direction of the drive shaft (32), the locking hole (331) and the locking block (333) are provided with a gap.

7. The single-drive headrest and lumbar support mechanism according to claim 5, characterized in that: The control lever (336) is provided with a thrust spring (338) for pulling the control lever (336) away from the transmission gear (33) to slide.

8. The single-drive headrest and lumbar support mechanism according to claim 5, characterized in that: The two control levers (336) are located between the two transmission gears (33). A pressing column (5) is provided between the two control levers (336). The pressing column (5) is slidably mounted on the back of the chair. The pressing column (5) is rotatably connected to two push rods (51). The two push rods (51) abut against the two control levers (336) respectively. The pressing column (5) is provided with a return spring (52) for pushing the pressing column (5) to reset.

Images