CN206938533U - A kind of manual lacing wire driver - Google Patents

Abstract

The utility model discloses a kind of manual lacing wire driver, including：Housing；The driven internal gear being rotatablely arranged in the housing, the lacing wire hanging structure for fixing lacing wire is provided with the driven internal gear；The active external gear engaged with the driven internal gear；Handle, for driving the active external gear to rotate；The lacing wire hanging structure is fixed in lacing wire, one end, and the other end is used to be connected with seat lumbar adjusting supporting device.The utility model uses the form of internal-external gear group, not only realizes labour-saving effect by gear train, can also be by way of nested so that the gear train only accounts for the space of an active external gear, realizes the structure type of simple structure, miniaturization, integrated form.

Description

A kind of manual stretch driver

technical field

The utility model relates to the technical field of seat lumbar support, in particular to a manual tensioning driver.

Background technique

With the development of science and technology in the field of vehicle transportation, people have higher and higher requirements for vehicle ride comfort. A simple manual adjustment support technology for the waist and back of the seat in the vehicle field has also emerged as the times require, and has gradually been applied in the market.

In the past, this kind of manually adjusted seat lumbar support technology usually used gears coaxial with the handle to drive the traction wire rope to adjust the position of the spring frame used to support the backrest sponge cushion to realize the local convexity of the seat backrest surface. Up or down, so as to realize the support effect on the lower back of the human body. By turning the handle, the gear that rotates coaxially with the handle is driven. The gear is fixed with a wire rope, so that the gear can pull the wire rope.

The manual lacing driver of this type of lumbar support product is to turn a rod-type adjustment handle or a wheel-type adjustment handle to coaxially drive the lacing drive gear of the manual lacing driver. The tie rods with steel wire ropes are hooked on the tie rod driving gear, and released or tightened. The stretching length of the tension rods of the wire rope determines the tension height of the spring frame supporting the backrest sponge bearing pad in the traction backrest, so as to realize the adjustment of different uplift heights of the seat backrest.

However, this type of traditional manual lacing driver usually uses an adjustment handle to drive the lacing drive gear to rotate, which is affected by the relatively large rotational torque of the handle, which makes manual operation more laborious. For this reason, some manufacturers adopt the form of gear sets to reduce the rotational moment. However, when the frame side plates inside the relatively narrow seat back are arranged, it is not easy to arrange because of the large structure and cumbersome installation operations. The chair factory complained.

Therefore, how to reduce the volume of the manual tendon driver on the premise of reducing the rotational torque, so as to facilitate the arrangement, has become a technical problem to be solved urgently by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a manual lacing driver to reduce the volume of the manual lacing driver on the premise of reducing the rotational torque, so as to facilitate the arrangement.

In order to achieve the above object, the utility model provides the following technical solutions:

A manual stretching driver comprising:

case;

A driven internal gear rotatably arranged in the housing, the driven internal gear is provided with a tie bar hooking structure for fixing the tie bars;

a driving external gear meshing with said driven internal gear;

a handle, used to drive the driving external gear to rotate;

One end of the tie rod is fixed to the tie rod hooking structure, and the other end is used to connect with the seat waist adjustment support device.

Preferably, the above-mentioned manual tendon stretching driver further includes a manual drive shaft coaxially connected with the driving external gear, and the handle is connected with the manual drive shaft.

Preferably, in the above-mentioned manual tensioning driver, one end of the manual drive shaft is a connecting end connected to the handle, and the other end has a hanging tooth structure, and the active external gear is provided with a locking mechanism that engages with the hanging tooth structure. The hanging tooth end, the connecting end protrudes from the casing, and the hanging tooth structure is located in the casing.

Preferably, in the above-mentioned manual tensioning driver, one end of the driving external gear is inserted into one end of the manual drive shaft having a hanging tooth structure;

The hanger structure is a notch opened on the manual drive shaft, and the end of the hanger is a protrusion matching the notch.

Preferably, the above-mentioned manual tensioning driver further includes a tension spring sleeved on the manual drive shaft, both ends of the tension spring are positioned on the manual drive shaft, and the tension force One end of the spring is connected with the driving external gear, and when the driving external gear moves the tension spring, the tension spring expands and rubs against the casing.

Preferably, in the above-mentioned manual tensioning driver, the handle is a rod-type adjustment handle or a wheel-type adjustment handle.

Preferably, in the above-mentioned manual tendon-stretching driver, the external tooth profile radius of the driving external gear is less than or equal to half of the internal tooth profile radius of the driven internal gear.

Preferably, in the above-mentioned manual tendon-stretching driver, the driving external gear adopts a circumferential full-tooth structure, and the driven internal gear adopts a partial internal-tooth structure.

Preferably, in the above-mentioned manual tensioning driver, the shaft center of the driven internal gear is connected to the outer profile of the driven internal gear through a rib plate, and avoids the local internal tooth structure.

Preferably, in the above-mentioned manual lacing driver, the lacing structure is a lacing slot provided on the driven internal gear, and the end of the lacing is provided with a The tie wire terminal lock block in the hooking groove, the outer peripheral surface of the driven inner gear is provided with a tie wire wrapping groove for limiting and accommodating the tie wire.

Preferably, in the above-mentioned manual tension driver, the casing is provided with a tension outlet that communicates with the tension wrapping groove.

Preferably, in the above-mentioned manual tension driver, there are a plurality of tension-attaching grooves, so as to be suitable for the tension of different lengths.

Preferably, in the above-mentioned manual tension driver, there are a plurality of said tension wrapping grooves, and there are a plurality of said tension tendon outlets in one-to-one correspondence with said tendon wrapping grooves.

Preferably, in the above-mentioned manual tension driver, the seat waist adjustment support device is a wire frame wire waist support, a plastic plate type waist support, a spring tension type waist support or a stretch rope type waist support.

Preferably, in the above-mentioned manual tensioning driver, the housing includes a detachably connected base housing and a cover plate, the base housing is provided with a shaft body rotatably connected to the driven internal gear, and the The base shell is provided with a mounting hole for being mounted on the side support frame inside the seat through a connecting piece.

It can be seen from the above-mentioned technical solution that the manual tensioning driver provided by the utility model adopts a driving external gear with external teeth and a driven internal gear with internal teeth, and adopts a master-slave double gear set arrangement form of inner and outer nesting. Specifically, the handle can be turned through it to drive the driving external gear to rotate. Since the driving external gear meshes with the driven internal gear, the driven internal gear follows the rotation, and the tie bars are fixed on the driven internal gear, so the driven internal gear rotates During the process, the lacing tendons are released or contracted, thereby driving the seat lumbar adjustment support device to achieve local bulge or flattening. The utility model adopts the form of an internal and external gear set, which not only realizes the labor-saving effect through the gear set, but also makes the gear set only occupy the space of one active external gear through the nesting method, and realizes the simplification, miniaturization and integration of the structure. formula structure.

Description of drawings

Fig. 1 is the explosion diagram of the manual tendon driver that the utility model embodiment provides;

Fig. 2 is a schematic structural view of the internal and external gear set provided by the embodiment of the present invention;

Fig. 3 is a schematic diagram of the bottom structure of the manual tendon driver provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the top structure of the manual tendon driver provided by the embodiment of the present invention;

Fig. 5 is a schematic diagram of the side structure of the manual tendon driver provided by the embodiment of the present invention;

Fig. 6 is a structural schematic view of the manual tendon driver provided by the embodiment of the present invention when in use;

Fig. 7 is a structural schematic diagram of the manual tendon driver provided in another embodiment of the present invention when in use;

Fig. 8 is a schematic structural view of the car seat provided by the embodiment of the present invention.

Among them, 100 is the manual lacing driver, 101 is the base shell, 1011 is the installation hole, 1012 is the outlet of the lacing, 102 is the cover plate, 103 is the driving external gear, 1031 is the external tooth, 104 is the driven internal gear, 1041 is the inner tooth, 1042 is the tie-bar hooking structure, 1043 is the wrapping groove of the tie-bar, 105 is the manual drive shaft, 106 is the tension spring, 107 is the shaft body, 108 is the tie-bar, 1081 is the steel-wire tie-bar, 1082 is the sheath tube, 1083 is the tension terminal lock block, 109 is the handle, 200 is the seat waist adjustment support device, 300 is the seat backrest, A is the back position of the seat waist adjustment support device, B is the seat waist adjustment support Device front.

detailed description

The core of the utility model is to provide a manual lacing driver, so as to reduce the volume of the manual lacing driver on the premise of reducing the rotational torque, so as to facilitate the arrangement.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1-Fig. 8, Fig. 1 is the exploded view of the manual tensioning driver provided by the embodiment of the utility model; Fig. 2 is the structural diagram of the internal and external gear set provided by the embodiment of the utility model; Fig. 3 is the implementation of the utility model Figure 4 is a schematic diagram of the top structure of the manual lacing driver provided by the embodiment of the utility model; Figure 5 is a schematic diagram of the side structure of the manual lacing driver provided by the embodiment of the utility model; Fig. 6 is a schematic diagram of the structure of the manual lacing driver provided by the embodiment of the present invention; Fig. 7 is a schematic diagram of the structure of the manual lacing driver provided by another embodiment of the present invention; Fig. 8 is an embodiment of the present invention Schematic diagram of the structure of the car seat provided.

The manual lacing driver provided by the embodiment of the utility model includes a housing, a driven internal gear 104 , a driving external gear 103 , a handle 109 and a lacing bar 108 .

Specifically, the housing may include a detachably connected base housing 101 and a cover plate 102, the base housing 101 is provided with a shaft body 107 rotationally connected with the driven internal gear 104, and the base housing 101 is provided with a Install the mounting holes 1011 on the side support frame inside the seat.

The driven internal gear 104 is rotatably arranged in the housing, and the driven internal gear 104 is provided with a lacing structure 1042 for fixing the lacing 108. One end of the lacing 108 is fixed to the lacing articulated structure 1042, and the other end is used for fixing the lacing. It is connected with the seat lumbar adjustment support device 200 . The tie rod 108 includes a steel wire tie 1081 and a sheath tube 1082 sleeved on the steel wire tie 1081 .

The driving external gear 103 meshes with the driven internal gear 104, and the handle 109 is used to drive the driving external gear 103 to rotate. Wherein, the handle 109 can be a rod-type adjusting handle, or a wheel-type adjusting handle. The rotation of the handle 109 drives the meshing mechanism inside the manual tendon stretching driver, and then drives the driving external gear 103 with the structural feature of external teeth to rotate. The driving external gear 103 with the external teeth structure and the driven internal gear 104 with the internal teeth are arranged in an inner and outer surrounding shape, that is, the driving external gear 103 with the external teeth structure is located inside the driven internal gear 104 with the internal teeth. within the bounding range of the tooth profile.

The manual stretching driver 100 provided by the utility model adopts a driving external gear 103 with external teeth and a driven internal gear 104 with internal teeth, and adopts a master-slave double gear set arrangement form of inner and outer nesting. Specifically, the handle 109 can be rotated by it to drive the driving external gear 103 to rotate. Since the driving external gear 103 meshes with the driven internal gear 104, the driven internal gear 104 rotates accordingly, and the tie bars 108 are fixed on the driven internal gear 104. , so during the rotation of the driven internal gear 104, the tie bars 108 are released or contracted, thereby driving the seat lumbar adjustment support device 200 to achieve local bulging or flattening. The utility model adopts the form of an internal and external gear set, which not only realizes the labor-saving effect through the gear set, but also makes the gear set only occupy the space of one active external gear through the nesting method, and realizes the simplification, miniaturization and integration of the structure. formula structure.

In a specific embodiment of the utility model, the utility model may also include a manual drive shaft 105 coaxially connected with the driving external gear 103 , and a handle 109 is connected with the manual drive shaft 105 . External teeth can be arranged on the manual drive shaft 105 , and internal teeth engaged with the external teeth can be arranged on the handle 109 , so as to realize the connection between the handle 109 and the manual drive shaft 105 .

Specifically, one end of the manual drive shaft 105 is a connecting end connected to the handle 109, and the other end has a hanging tooth structure. located inside the housing. One end of the driving external gear 103 is inserted into the end of the manual drive shaft 105 with a hanging tooth structure; the hanging tooth structure is a gap provided on the manual driving shaft 105, and the hanging tooth end is a protrusion cooperating with the gap. After the driving external gear 103 is inserted into the manual drive shaft 105, the protrusion is just inserted into the gap, and when the manual drive shaft 105 is rotated, the driving external gear 103 can be driven to rotate by the circumferential limiting effect of the protrusion and the gap.

In a specific embodiment of the utility model, the utility model may also include a tension spring 106 sheathed on the manual drive shaft 105 . The two ends of tension spring 106 are all positioned on the manual drive shaft 105, and one end of tension spring 106 links to each other with driving external gear 103, and when driving external gear 103 stirs tension spring 106, tension spring 106 expands and friction with the housing. When the seat waist adjustment support device 200 needs to be adjusted, the manual drive shaft 105 is driven to rotate through the handle 109, and the tension spring 106 is sleeved on the manual drive shaft 105 to follow the rotation, and is connected to the driving external gear 103 by one end of the tension spring 106 , so that the tension spring 106 is tightened and thinned, and the driving external gear 103 rotates accordingly, and then drives the driven internal gear 104 to rotate. When the human body squeezes the seat waist adjustment support device 200, the extrusion force will be transmitted to the driven internal gear 104 through the seat waist adjustment support device 20, and then the driven internal gear 104 will be driven to rotate, and the driven internal gear 104 will drive the active When the external gear 103 rotates, the active external gear 103 will turn the tension spring 106, so that the tension spring 106 expands and becomes thicker, and rubs against the housing. This frictional force forms the self-locking force of the manual tensioning driver, making it impossible to The seat waist adjustment support device 200 is pressed by the human body to change the position of the seat waist adjustment support device 200 .

In a specific embodiment of the present invention, the external tooth profile radius of the driving external gear 103 is less than or equal to half of the profile radius of the driven internal gear 104 of the driven internal gear 104 . The driving external gear 103 adopts a circumferential full tooth structure, and the driven internal gear 104 adopts a partial internal tooth structure. During operation, the driving external gear 103 runs within the range of the track line between the axis center inside the driven internal gear 104 and the driven internal gear 104 . Moreover, the stroke limit is provided by the range of the track line between the axis center inside the driven internal gear 104 and the driven internal gear 104 . That is, the physical structural obstruction of the row trace range limits the run length range of the row trace. It can be understood that the running length of the row trace (the region length of the local internal tooth structure) determines the stretching length of the tie rod. The expansion and contraction length of the tension rods determines the tension height of the lumbar support supporting the backrest sponge bearing pad in the traction backrest, and realizes the adjustment of different raised heights of the seat backrest.

In a specific embodiment of the present invention, the shaft center of the driven internal gear 104 is connected with the outer profile of the driven internal gear 104 through ribs, and avoids the local internal tooth structure. That is, the connection between the axis center of the driven internal gear 104 and the outer profile of the gear, after avoiding the running space between the inner teeth of the driven internal gear 104 and the traces of the driving external gear 103, adopts a structural method in which the axis center extends to the outer profile of the gear constitute.

In a specific embodiment of the present utility model, the tie bar hooking structure 1042 is a tie bar hooking groove 1042 opened on the driven internal gear 104, and the end of the tie bar 108 is provided with a hook that snaps into the tie bar hooking groove. The tie wire terminal locking block 1083 and the outer peripheral surface of the driven internal gear 104 are provided with a tie wire wrapping groove 1043 for limiting and accommodating the tie wire 108 . The casing (specifically, the base casing 101 ) is provided with a tension outlet 1012 communicating with the tension surrounding groove 1043 . The tension wire 108 is led out from the tension wire outlet 1012 of the base housing 101, and is connected with the external lumbar support actuator.

In a specific embodiment of the present invention, there may be one or more tie-bar hooking grooves 1042 , so as to be suitable for tie-bars 108 of different lengths. The tendon terminal lock block 1083 of the tendon 108 is hooked to different tendon hooking grooves 1042 , so that the adaptability to the tendon 108 of different lengths can be achieved.

The number of the tendon wrapping grooves 1043 on the driven internal gear 104 used to limit the accommodation of the tendon 108 can be one or more, for example two, and the tendon outlet 1012 is for wrapping with the tendon. There are multiple slots 1043 in one-to-one correspondence. Taking two as an example, the two tie bars surround the groove 1043 and can accommodate two tie bars 108 at the same time. When cooperating with one tension outlet 1012 on the left and one right, it can simultaneously pull two tension bars 108 for telescopic operation, and realize the function of pulling two external lumbar support actuators.

In a specific embodiment of the utility model, the seat waist adjustment support device 200 can be a wire frame wire waist support, a plastic plate type waist support, a spring tension type waist support or a stretch rope type waist support.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A manual tensioning driver, characterized in that, comprising: case; A driven internal gear (104) rotatably arranged in the housing, the driven internal gear (104) is provided with a tie bar hooking structure (1042) for fixing the tie bar (108); A driving external gear (103) meshing with the driven internal gear (104); A handle (109), used to drive the driving external gear (103) to rotate; One end of the tie rod (108) is fixed to the tie rod hooking structure (1042), and the other end is used to connect with the seat waist adjustment support device (200). 2. The manual tensioning driver according to claim 1, further comprising a manual drive shaft (105) coaxially connected with the driving external gear (103), and the handle (109) is connected to the manual The drive shaft (105) is connected. 3. The manual tensioning driver according to claim 2, characterized in that, one end of the manual drive shaft (105) is a connection end connected to the handle (109), the other end has a hanger structure, and the active The external gear (103) is provided with a hanging tooth end clamped with the hanging tooth structure, the connecting end protrudes from the housing, and the hanging tooth structure is located in the housing; One end of the driving external gear (103) is inserted into the end of the manual drive shaft (105) having a hanging tooth structure; The hanger structure is a notch opened on the manual drive shaft (105), and the end of the hanger is a protrusion matching the notch. 4. The manual tensioning driver according to claim 3, further comprising a tension spring (106) sheathed on the manual drive shaft (105), and the two tension springs (106) Both ends are positioned on the manual drive shaft (105), and one end of the tightening force spring (106) is connected to the driving external gear (103), and the driving external gear (103) moves the When the tension spring (106) is tightened, the tension spring (106) expands and rubs against the housing. 5. The manual tendon-stretching driver according to claim 1, characterized in that, the external tooth profile radius of the driving external gear (103) is less than or equal to the internal tooth profile radius of the driven internal gear (104). Half; The driving external gear (103) adopts a circumferential full tooth structure, and the driven internal gear (104) adopts a partial internal tooth structure. 6. The manual tensioning driver according to claim 5, characterized in that, the shaft center of the driven internal gear (104) is connected with the outer profile of the driven internal gear (104) through a rib plate, and avoids The local internal tooth structure. 7. The manual lacing driver according to claim 1, characterized in that, the lacing structure (1042) is a lacing groove provided on the driven internal gear (104), and the The end of the tie wire (108) is provided with a tie wire terminal lock block (1083) that is snapped into the tie rod hooking groove, and the outer peripheral surface of the driven internal gear (104) is provided with a stopper for limiting and accommodating. The tendon wrapping groove (1043) of the brace (108), the casing is provided with a brace outlet (1012) communicating with the brace wrapping groove (1043). 8. The manual lacing driver according to claim 7, characterized in that there are a plurality of tying grooves for the tying to be suitable for the tying (108) of different lengths; There are multiple tendon wrapping grooves (1043), and there are multiple tendril outlets (1012) in one-to-one correspondence with the tendon wrapping grooves (1043). 9. The manual lacing driver according to claim 1, characterized in that, the seat waist adjustment support device (200) is a wire frame lumbar support, a plastic plate lumbar support, a spring lacing lumbar support or a puller Stretch cord lumbar support. 10. The manual tensioning driver according to claim 1, characterized in that, the housing comprises a detachably connected base housing (101) and a cover plate (102), and the base housing (101) is provided with A shaft (107) rotatably connected to the driven internal gear (104), and the base shell (101) is provided with a mounting hole (1011) for mounting on the side support frame inside the seat through a connecting piece .