CN201026017Y - Device for regulating chair angle - Google Patents
Device for regulating chair angle Download PDFInfo
- Publication number
- CN201026017Y CN201026017Y CNU2007200057842U CN200720005784U CN201026017Y CN 201026017 Y CN201026017 Y CN 201026017Y CN U2007200057842 U CNU2007200057842 U CN U2007200057842U CN 200720005784 U CN200720005784 U CN 200720005784U CN 201026017 Y CN201026017 Y CN 201026017Y
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- CN
- China
- Prior art keywords
- ratchet
- cam
- slide block
- locking
- locking cam
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model discloses a chair angle adjusting device, belonging to a mechanical technical field, which comprises an unlocking cam thinner than a locking cam, a locking cam, a ratchet wheel, a slide way plate and a reset spring connected with a central shaft; the locking cam is connected with the unlocking cam; the slide block is connected with the unlocking cam and the slide way; the sheath is connected with the ratchet wheel and the slide way plate; the reset spring is connected with the slide way plate. The thickness of the locking cam and the unlocking cam can be designed as per the strained strength. Because the locking cam and the unlocking cam are independently produced, the mold structure is greatly simplified, the mold service life is prolonged, the requirement of stamping can be satisfied and the production efficiency is highly promoted. In addition, the sheath structure is adopted at the same time, so that the overall structure is simple, the assembly is flexible and maintenance is not needed.
Description
Technical field
The utility model relates to field of mechanical technique, is meant the device that a kind of chair angle is regulated especially.
Background technology
At present, a lot of seats all can be realized the function of angular adjustment, chair back fast folding, and realize latch functions after angular adjustment, make the fixed angle between the seat support and the chair back.
Prior art mainly contains dual mode when realizing angular adjustment: first kind of mode is that ZL 200420017699.4, utility model name are called adjusting of leaf spring type chair angle and chair back folders core apparatus referring to the patent No..Referring to Fig. 1, in this device, adopt two slider designs to realize angular adjustment, this device adopts protective-cover type structure, compact conformation, need not safeguard.But owing to adopt two slide blocks, after central shaft 101 rotations, slide block 102 to the circumferencial direction translation of ratchet 106, meshes up to slide block ratchet 104 and ratchet ratchet 105 in chute under the effect of back-moving spring 103 fully.Because what adopt is two slider designs, after engagement, central shaft 101 is subjected to slide block 102 position influences, may be not on the center, thus there is the problem of slide block ratchet 104 and the stability of ratchet ratchet 105 engagements.
The second way is to be that ZL 01250171.9, utility model name are called seat angle adjustment core transmission device referring to the patent No..What the cam mechanism of this device adopted is three chutes, three slide block structures, as Fig. 2, shown in Figure 3.But comprise in the cam mechanism of this device and have separating latching segment and having the lock portion of reinforcement 201 of cam path 202, the hole of cam path 202 and cam center adopts Sheet Metal Forming Technology to form, owing to separate the intensity of the intensity of latching segment greater than lock portion, when the integral thickness of cam satisfies locking and requires, the latching segment intensity of separating of cam is had more than needed excessive, increase the integral thickness of this device, and the manufacturability when punching press cam path 202 and centre bore is poor.After satisfying the punching press condition, the thickness of lock portion is identical with the thickness of separating latching segment, as shown in Figure 3.Because therefore stressed greater than separating latching segment behind the lock portion support slipper, cause being subjected to the intensity of force difference.Reinforcement is arranged on the cam, and profile is made of a plurality of curves, exists the problem and this device that are difficult for processing to adopt the attaching type structure, volume is bigger, and the overall structure heaviness.
The utility model content
In view of this, the device that the utility model is to provide a kind of chair angle to regulate comprises: the release cam, and the locking cam has the slide block of slide block ratchet, has the ratchet of ratchet ratchet, has the coulisse of chute, back-moving spring, central shaft, sheath;
Thickness is connected with central shaft less than release cam, locking cam, ratchet, coulisse, the back-moving spring of locking cam; The locking cam is connected with the release cam; Slide block is connected with release cam, chute; Sheath is connected with ratchet, coulisse; Back-moving spring is connected with coulisse.
Wherein, described release cam, locking cam, ratchet, coulisse, back-moving spring be connected with central shaft for:
Release cam, locking cam, back-moving spring are connected with central shaft formation axle by the square hole of self, and ratchet, coulisse are connected with central shaft formation axle by the circular hole of self.
Wherein, slide block be connected with release cam, chute for:
Slide block is connected with the cam path of release cam by the boss of self, slide block in chute and with the chute matched in clearance.
Wherein, the locking cam be connected with the release cam for:
The locking cam is connected with the aperture of release cam by the semi-piercing boss of self.
Wherein, has the boss that is connected with chair back connecting plate on the ratchet.
Wherein, has the boss that is connected with the seat support connecting plate on the coulisse.
Wherein, ratchet also has after back-moving spring resets by central shaft drive release cam, locking cam, with the contacted ratchet planing surface of slide block ratchet.
Wherein, described chute, slide block are respectively more than three or three.
Wherein, described slide block ratchet and ratchet ratchet drive the release cam at back-moving spring, the locking cam is meshed after resetting; Slide block ratchet and ratchet ratchet drive the release cam at central shaft, the locking cam is separated after rotating.
Device of the present utility model has the following advantages: locking cam and release cam can come design thickness according to the force intensity size that is subjected to of self respectively.The release cam thickness less than the locking cam, the Thickness Design of locking cam is optimum when identical of the thickness with slide block, at this moment, release cam and locking cam are stressed the most balanced.Simultaneously, owing to locking cam, release cam are produced separately, can satisfy the requirement of punching press, production efficiency is compared with the production efficiency of unitary cam, improves a lot.
When adopting three chutes, three slide blocks, when realizing the chair angle locking, can also realize self-centering, make slide block ratchet and ratchet ratchet engagement more stable.
In addition, this device adopts the protective-cover type structure simultaneously, and overall structure is simple, and is flexible for installation, need not safeguard.At the fast folding of realizing to realize when chair angle is regulated seat.
Description of drawings
Fig. 1 is available technology adopting two slide block seat angle regulator schematic diagrames;
Fig. 2 is the cam structure front view of available technology adopting three slide blocks;
Fig. 3 is the cam structure left view of available technology adopting three slide blocks;
Fig. 4 is the front view that three slide blocks are connected with cam among the embodiment of the present utility model;
Fig. 5 is the left view that three slide blocks are connected with cam among the embodiment of the present utility model;
Fig. 6 is the combination schematic diagram a of embodiment of the present utility model;
Fig. 7 is the combination schematic diagram b of embodiment of the present utility model.
The specific embodiment
Provide embodiment of the present utility model below, and be described with reference to the accompanying drawings the annexation of each part in the composition that installs among the embodiment and the device.
In this embodiment, adopt three slide block structures.Referring to Fig. 4, Fig. 5, locking cam 26 is connected with release cam 27 by the semi-piercing boss 19 of self, and slide block 5 is connected by the cam path 4 of three symmetries on self semi-piercing boss 18 and the release cam 27.Slide block forms self-locking from locking face 31 and locking cam 26 between locking face 30.
When the chair angle adjusting device that adopts three above-mentioned slide block structures to be combined into realizes the angular adjustment of seat, mesh more stablely between the ratchet, flexibly.Describe the chair angle adjusting device that adopts three slide blocks in detail below in conjunction with Fig. 4, Fig. 5, Fig. 6, Fig. 7.
Among this embodiment, the chair angle adjusting device is formed by ratchet mechanism, cam mechanism, back-moving spring 7, central shaft 11 and with the sheath 9 that these parts link together.Ratchet mechanism is made up of ratchet 1 and slide block 5, and cam mechanism is made up of release cam 27, locking cam 26, coulisse 13, slide block 5.
There is semi-piercing boss 2 at ratchet 1 back side, can be connected with the Chair back connecting plate by semi-piercing boss 2, and the inner chamber of ratchet 1 has ratchet ratchet 28 and planing surface 29.12, three slide blocks 5 of chute that three uniform settings are arranged on the coulisse 13 in coulisse 13 corresponding chutes 12, side 10 matched in clearance of the side of slide block 56 and chute 12.There is semi-piercing boss 25 to be connected on the coulisse 13 with the seat support connecting plate.
There is the slide block ratchet 32 that can be meshed with ratchet ratchet 28 in slide block 5 outsides, and slide block 5 lower edges have one section slide block from locking face 31, and there is a semi-piercing boss 18 at slide block 5 middle parts.Have on the locking cam 26 three sections with three slide blocks from the corresponding cam of locking face 31 from locking face 30, three semi-piercing boss 19 are arranged.Three cam paths 4 are arranged on the release cam 27, and simultaneously corresponding with semi-piercing 18 boss at three slide block 5 middle parts, the semi-piercing boss 18 of slide block 5 is connected with release cam 27 in cam path 4.Three apertures 3 are arranged on the release cam 27, be connected with three semi-piercing boss 19 on the locking cam 26.The inner ring 8 of back-moving spring 7 is square, and release cam 27, locking cam 26 are directly fixedlyed connected with the foreign side of central shaft 11 by the interior side of self.The outer hook 17 of back-moving spring 7 is fixed in the aperture 24 of coulisse 13.Central shaft 11 two terminal circle cambered surfaces 14,16 respectively with the centre bore matched in clearance of the centre bore 22 and the ratchet 1 of coulisse 13.Inclined-plane 15 is arranged on the central shaft 11, when the interior side 8 of back-moving spring 7 is connected with central shaft 11, the interference in preventing between side 8 and the central shaft 11.Sheath 9 is fixedlyed connected by closing up with coulisse 13, the interior circle 21 and ratchet cylindrical 20 matched in clearance of sheath 9.
Be connected with the seat support connecting plate by three semi-piercing boss 25 on the coulisse 13, six semi-piercing boss 2 of ratchet 1 are with after chair back connecting plate is connected, when on central shaft 11, applying the opposite external torque of direction and back-moving spring 7, central shaft 11 drives the direction motion of release cam 27 towards release, unlocking direction is the counter clockwise direction among Fig. 2, three cam paths 4 drive three slide blocks 5 along the center position translation of chute 12 to central shaft 11 simultaneously, throw off fully up to slide block ratchet 32 and ratchet ratchet 28, this moment ratchet 1 relatively coulisse 13 rotate freely along the center of sheath 9, ratchet 1 is connected with the chair back of seat, realize the angular adjustment of seat this moment, when angular adjustment arrives correct position, discharge external torque, central shaft 11 turns clockwise under the effect of back-moving spring 7 power, locking cam 26 promotes slide block 5, along chute 12 to direction translational away from central shaft 11, mesh fully up to slide block ratchet 32 and ratchet ratchet 28, simultaneously locking cam 26 between locking face 31, form self-locking from locking face 30 and slide block, with chair back angle locking in this position.In the rotary course of locking cam 26, the arc surface 33 of locking cam 26 and inner arc surface 34 matched in clearance of coulisse 13.After slide block ratchet 32 and 28 engagements of ratchet ratchet, realize the self-centering of central shaft 11, thereby make slide block ratchet 32 and ratchet ratchet 28 mesh more stable.
Behind rotary middle spindle 11, after slide block ratchet 32 and ratchet ratchet 28 thrown off, the rotation by ratchet 1 with the angular adjustment of the chair back to special angle, if when slide block ratchet 32 and ratchet planing surface 29 are relative, the chair back is fast folding within the specific limits, thereby realizes chair back folder function.
In the embodiment of this device, still adopt the design of three slide block structures, can after angular adjustment, realize in the locking, realize the self-centering of central shaft 11.
Certainly, device of the present utility model is not restricted to three slide block structures, also can realize the adjusting and the locking of angle for the multi-slide structure.
Locking cam 26 and release cam 27 can come design thickness respectively according to the force intensity size that is subjected to of self respectively.27 thickness of release cam is less than locking cam 26, and the Thickness Design of locking cam 26 is optimum when identical of the thickness with slide block 5, and at this moment, release cam 27 is stressed the most balanced with locking cam 26.Simultaneously, owing to locking cam 26, release cam 27 are produced separately, can satisfy the requirement of punching press, production efficiency is compared with the production efficiency of unitary cam, improves a lot.
When adopting three chutes, three slide blocks, when realizing the chair angle locking, can also realize self-centering, make slide block ratchet 28 more stable with 32 engagements of ratchet ratchet.
In addition, this device adopts the protective-cover type structure simultaneously, and overall structure is simple, and is flexible for installation, need not safeguard.At the fast folding of realizing to realize when chair angle is regulated seat.
For device of the present utility model, all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. the device regulated of a chair angle, it is characterized in that, comprise: release cam (27), locking cam (26) has the slide block (5) of slide block ratchet (32), has the ratchet (1) of ratchet ratchet (28), coulisse (13) with chute (12), back-moving spring (7), central shaft (11), sheath (9);
Thickness is connected with central shaft (11) less than release cam (27), locking cam (26), ratchet (1), coulisse (13), the back-moving spring (7) of locking cam (26); Locking cam (26) is connected with release cam (27); Slide block (5) is connected with release cam (27), chute (12); Sheath (9) is connected with ratchet (1), coulisse (13); Back-moving spring (7) is connected with coulisse (13).
2. device according to claim 1 is characterized in that, described release cam (27), locking cam (26), ratchet (1), coulisse (13), back-moving spring (7) be connected with central shaft (11) for:
Release cam (27), locking cam (26), back-moving spring (7) are connected with central shaft (11) formation axle by the square hole of self, and ratchet (1), coulisse (13) are connected with central shaft (11) formation axle by the circular hole of self.
3. device according to claim 1 is characterized in that, slide block (5) be connected with release cam (27), chute (12) for:
Slide block (5) is connected with the cam path (4) of release cam (27) by the boss (18) of self, slide block (5) in chute (12) and with chute (12) matched in clearance.
4. device according to claim 1 is characterized in that, locking cam (26) be connected with release cam (27) for:
Locking cam (26) is connected with the aperture (3) of release cam (27) by the semi-piercing boss (19) of self.
5. device according to claim 1 is characterized in that, has the boss (2) that is connected with chair back connecting plate on the ratchet (1).
6. device according to claim 1 is characterized in that, has the boss (25) that is connected with the seat support connecting plate on the coulisse (13).
7. device according to claim 1 is characterized in that, ratchet (1) also has after back-moving spring (7) resets by central shaft (11) drive release cam (27), locking cam (26), with the contacted ratchet planing surface of slide block ratchet (32) (29).
8. device according to claim 1 is characterized in that, described chute (12), slide block (5) are respectively more than three or three.
9. device according to claim 1 is characterized in that, described slide block ratchet (32) and ratchet ratchet (28) drive release cam (27) at back-moving spring (7), locking cam (26) is meshed after resetting; Slide block ratchet (32) and ratchet ratchet (28) drive release cam (27) at central shaft (11), locking cam (26) is separated after rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200057842U CN201026017Y (en) | 2007-02-16 | 2007-02-16 | Device for regulating chair angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200057842U CN201026017Y (en) | 2007-02-16 | 2007-02-16 | Device for regulating chair angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201026017Y true CN201026017Y (en) | 2008-02-27 |
Family
ID=39130216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200057842U Expired - Lifetime CN201026017Y (en) | 2007-02-16 | 2007-02-16 | Device for regulating chair angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201026017Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102144857A (en) * | 2011-02-24 | 2011-08-10 | 湖北中航精机科技股份有限公司 | Seat and backrest angle adjusting device thereof |
| CN109398171A (en) * | 2018-12-07 | 2019-03-01 | 湖北航嘉麦格纳座椅系统有限公司 | A kind of automotive seat and seat angle adjustor core members |
-
2007
- 2007-02-16 CN CNU2007200057842U patent/CN201026017Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102144857A (en) * | 2011-02-24 | 2011-08-10 | 湖北中航精机科技股份有限公司 | Seat and backrest angle adjusting device thereof |
| CN102144857B (en) * | 2011-02-24 | 2012-11-21 | 湖北中航精机科技股份有限公司 | Seat and backrest angle adjusting device thereof |
| CN109398171A (en) * | 2018-12-07 | 2019-03-01 | 湖北航嘉麦格纳座椅系统有限公司 | A kind of automotive seat and seat angle adjustor core members |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |