CN207870634U - gear adjusting device - Google Patents

Abstract

The utility model discloses a kind of gear adjusting device, including shift rod, gear buckle and fixing piece, the shift rod is equipped with sliding groove, the fixing piece slidably coordinates with the sliding groove, the shift rod is equipped with the engaging tooth arranged along the length direction of the sliding groove, and the gear buckle, which is actively set on the fixing piece and selectively with the engaging tooth, to be engaged.The height that the utility model gear adjusting device is suitable for headrest is adjusted, easy to use.

Description

Gear adjusting device

Technical field

The utility model is related to a kind of gear adjusting device more particularly to a kind of height adjustings being suitable for headrest, use Simply and easily gear adjusting device.

Background technology

Chair is widely used by family or office space, in order to ensure comfort that chair uses, existing office chair Usually have the function of backrest is adjustable, handrail is adjustable etc., this can meet people for the user of different building shape and different sitting postures Use need.However, the adjustable posture that can only adapt to waist of backrest, handrail is adjustable can only also to adapt to bearing for arm, right In head, the neck of some users is longer, needs higher headrest, the neck of some users is shorter, needs lower head Pillow, above two function cannot all meet the head needs of different users, and therefore, chair only has that backrest is adjustable and handrail is adjustable It is obviously inadequate, in order to reach the standard of higher comfort and ease of use, meets the more levels of user and side The demand of position, it is also necessary to keep the headrest of chair adjustable, still, adjustable function or its knot or existing chair is not rested the head on Structure is complicated, regulative mode trouble, inconvenient.

Therefore, it is necessary to a kind of height adjusting being suitable for headrest, gear adjusting devices easy to use.

Utility model content

The purpose of this utility model is to provide a kind of height adjusting being suitable for headrest, gear tune easy to use Regulating device.

To achieve the goals above, gear adjusting device provided by the utility model includes shift rod, gear buckle and consolidates Determine part, the shift rod is equipped with sliding groove, and the fixing piece slidably coordinates with the sliding groove, and the shift rod is equipped with along institute State the engaging tooth of the length direction arrangement of sliding groove, gear buckle is actively set on the fixing piece and selectively Engage with the engaging tooth.

Compared with prior art, since the utility model on the shift rod by being arranged sliding groove, make the fixation Part slidably coordinates with the sliding groove, and engaging tooth is arranged on the shift rod, by being installed on the fixing piece Gear buckle selectively engages with the engaging tooth, so as to so that the relatively described fixing piece of the shift rod is stretched out or shunk Engage positioning relatively to can also be realized with the fixing piece when a certain position, therefore, can rapidly realize the gear of shift rod Setting is needed suitable for resting the head on etc. on the household goods of adjusting position to achieve the purpose that adjust the position of shift rod, and It is convenient using very simple.

Preferably, the gear adjusting device further includes elastic element, the elastic element is set to the gear buckle Between the fixing piece, to provide an elastic force for making the gear be sticked in the engaging tooth.

Specifically, the elastic element is compressed spring.

Preferably, the fixing piece is equipped with locating slot, the locating slot has engaging position and release the lock position, the gear buckle With locating shaft, when the locating shaft is located at the engaging position, the gear buckle engages the engaging tooth, the positioning axle position When the release the lock position, the gear buckle discharges the engaging tooth.

Specifically, the locating slot is of an L-shaped structure, and the engaging position is set to the lateral end of the L-type structure, institute State the vertical end that release the lock position is set to the L-type structure.

Specifically, the gear buckle is equipped with guide groove, and the pivot pin of the fixing piece is slidably plugged in described lead relatively Into slot.

Specifically, the shift rod is equipped with the first driving portion and the second driving portion, and the first driving portion driving is described fixed Position axis slides into the engaging position from the release the lock position, and second driving portion drives the locating shaft to be slided from the engaging position To the release the lock position.

More specifically, the shift rod is equipped with driver slot along the length direction of the sliding groove, the locating shaft is slidably It is plugged in the driver slot, the both ends of the driver slot are respectively formed first driving portion and the second driving portion.

Preferably, the engaging tooth is equipped with driving inclined-plane, and when the shift rod fixing piece elongation relatively, the drive Dynamic inclined-plane drives the gear buckle to be detached from the engaging tooth.

Preferably, the shift rod is equipped with the limiting slot along the sliding groove length direction, there is limit on the fixing piece Position convex block, the spacing block set are slidably matched in the limiting slot.

Description of the drawings

Fig. 1 is the decomposition diagram of the gear adjusting device on the utility model headrest.

Fig. 2 is the structure chart of the gear adjusting device on the utility model headrest.

Fig. 3 is the structure chart of the shift rod of the utility model gear adjusting device.

Fig. 4 is the structure chart of the gear buckle and fixing piece of the utility model gear adjusting device.

Fig. 5 is the status diagram that the utility model headrest is adjusted.

Fig. 6 is the lock-out state figure of the utility model headrest gear adjusting device in extreme lower position.

Fig. 7 is the lock-out state figure of the utility model headrest gear adjusting device at extreme higher position.

Fig. 8 is the unlocked state figure of the utility model headrest gear adjusting device at extreme higher position.

Fig. 9 is that the gear of the utility model headrest gear adjusting device in extreme lower position buckles the state discharged again Figure.

Specific implementation mode

For the technology contents of the utility model, construction feature, the effect realized is described in detail, below in conjunction with embodiment And attached drawing is coordinated to be explained in detail.

As shown in Figure 1, Figure 2 and Figure 3, the gear adjusting device 100 of the utility model is suitable on the headrest 200 of seat, The height of headrest 200 is adjusted, the gear adjusting device 100 is fixedly connected on the back of the body of seat by a mounting base 300 It is top；The gear adjusting device 100 includes shift rod 1, gear buckle 2, fixing piece 3 and elastic element 4；The shift rod 1 Side be equipped with sliding groove 11, the fixing piece 3 slidably coordinates with the sliding groove 11；The head being connect with the headrest 200 Pillow bar 301 is fixedly connected with the shift rod 1.The shift rod 1 is equipped with the card arranged along the length direction of the sliding groove 11 Tooth 12 is closed, the engaging tooth 12 is located at the one side wall of the sliding groove 11.The engaging tooth 12 is equipped with driving inclined-plane 12a, works as institute When stating the fixing piece 3 relatively of shift rod 1 and extending, the driving inclined-plane 12a drives the gear buckle 2 to be detached from the engaging tooths 12。

As shown in Figures 2 and 4, the fixing piece 3 is equipped with locating slot 31, and the locating slot 31 has engaging position 31a and releases Lock-bit 31b, the locating slot 31 are of an L-shaped structure, and the engaging position 31a is set to the lateral end of the L-type structure, institute State the vertical end that release the lock position 31b is set to the L-type structure.The top of the gear buckle 2 has locating shaft 21, described Locating shaft 21 slides between the engaging position 31a and the release the lock position 31b.The lower part of the gear buckle 2 is equipped with guide groove 22, the guide groove 22 is in vertically arranged, and the pivot pin 31 of the fixing piece 3 is slidably plugged in the guide groove 22 relatively. The elastic element 4 is compressed spring, and the elastic element 4 is set between the gear buckle 2 and the fixing piece 3, with One elastic force for making the gear buckle 2 be sticked in the engaging tooth 12 is provided.When the locating shaft 21 slides into the engaging When the 31a of position, under the elastic acting force of the elastic element 4, the 2 engaging engaging tooth 12 of the gear buckle, when described fixed When position axis 21 is located at the release the lock position 31b, the gear buckle 2 is detached from the engaging tooth 12, and at this time in the elasticity member Under the elastic acting force of part 4, the locating shaft 21 is held in the release the lock position 31b, so that 2 release of gear buckle The engaging tooth 12.When gear buckle 2 selectively engage with the engaging tooth 12, accordingly, the shift rod 1 and The relative position of the fixing piece 3 changes, and realizes that the position of shift rod 1 is adjusted.

Again as shown in Figures 2 and 3, the shift rod 1 is equipped with driver slot 13 along the length direction of the sliding groove 11, described Locating shaft 21 is slidably plugged in the driver slot 13, and the both ends of the driver slot 13 are respectively formed the first driving portion 13a And the second driving portion 13b.The first driving portion 13a drives the locating shaft 21 to slide into the card from the release the lock position 31b Position 31a is closed, the second driving portion 13b drives the locating shaft 21 to slide into the release the lock position 31b from the engaging position 31a.

Again referring to Fig. 1, the shift rod 1 is equipped with the limiting slot 14 along 11 length direction of the sliding groove, the fixation There is spacing block set 32, the spacing block set 32 are slidably matched on part 3 in the limiting slot 14, and pass through the limit Slot 14 reaches the other side of the shift rod 1, and then is fixedly connected with the mounting base 300.

In summary and Fig. 5 to Fig. 9 is combined, the operation principle of the utility model gear adjusting device 100 is carried out below Detailed description is as follows：

As shown in fig. 6, in the initial state, the fixing piece 3 is located at the upper end of the sliding groove 11, at this point, the head On minimum gear, the locating shaft 21 of the gear buckle 2 is located in the engaging position 31a of the locating slot 31 pillow 200, described Gear buckle 2 engages with first engaging tooth 12 of the top of the shift rod 1.

As shown in fig. 7, when needing to be turned up the height of the headrest 200,200 are rested the head on described in direct pull, make the head Pillow 200 rises, and at this moment, the headrest 200 drives the shift rod 1 by head rest pole 301, keeps the shift rod 1 relatively described Fixed block upward sliding stretches out；During stretching, due to the driving inclined-plane 12a effects of the engaging tooth 12, make the gear Position buckle 2 automatically disengage with the engaging of engaging tooth 12, after reaching certain altitude and stopping adjustment, for example, being adjusted to maximum Gear height after, under the elastic force effect of the elastic element 4, the gear buckles 2 automatic fastenings in current corresponding card It closes on tooth 12, when being adjusted to maximum height, the gear buckles 2 automatic fastenings in the last one engaging tooth 12 of the lowermost On, to make the shift rod 1 be relatively fixed again with the fixing piece 3；At this point, adjustment finishes.

Fig. 8 and Fig. 9 is please referred to, when needing to return to original state headrest 200, is needed in headrest 200 in maximum It being unlocked when gear height, concrete operations are, then pull up the headrest 200, and the gear is made to continue to rise, at this moment, The gear buckle 2 is detached from the last one engaging tooth 12, and the locating shaft 21 slides into the L-type structure from the engaging position 31a Turning point position, then, the second driving portion 13b of the driver slot 13 on the shift rod 1 just pushes the locating shaft 21, The locating shaft 21 is set to move up, to make the locating shaft 21 slide on the release the lock position 31b, and in the elastic element It is held on the release the lock position 31b under 4 elastic force effect.At this point, the gear engaging is mutually disengaged simultaneously with the engaging tooth 12 And will not automatic fastening, at this moment the headrest 200 can be dropped to lowest point.When the headrest 200 drops to minimum gear Moment, the first driving portion 13a of the driver slot 13 on the shift rod 1 is just supported with the locating shaft 21, to downwards Locating shaft 21 described in pushing tow make the locating shaft 21 slide into the turning point position of the L-type structure from the release the lock position 31b, again It is slipped down in the engaging position 31a in the elastic force effect of the elastic element 4, at this moment, gear buckle 2 is sticked in the again On one engaging tooth 12, to be returned to original state.

Compared with prior art, since the utility model on the shift rod 1 by being arranged sliding groove 11, make described solid Determine part 3 with the sliding groove 11 slidably to coordinate, and engaging tooth 12 is set on the shift rod 1, it is described solid by being installed on Determine the buckle of the gear on part 32 selectively to engage with the engaging tooth 12, so as to so that the shift rod 1 is relatively described solid Determine the stretching of part 3 or can also realize with the fixing piece 3 when being retracted to a certain position to engage positioning relatively；Also, by the way that L-type is arranged The locating slot 31 of structure makes the locating shaft 21 of the gear buckle 2 be slided in the locating slot 31, coordinates the shift rod 1 On the first driving portion 13a and the second driving portion 13b so that gear buckle 2 rest the head on 200 highest gear when can solve Lock realizes the return of headrest 200, when headrest 200 is returned to minimum gear, and can automatically become locked to current position, on The everything stated is automatically performed in the sliding up and down of the shift rod 1, and operation very simple therefore can be rapidly Realize that the gear setting of shift rod 1 needs to adjust to achieve the purpose that adjust the position of shift rod 1 suitable for headrest 200 etc. On the household goods of position, and using very convenient.

Above disclosed is only the preferred embodiments of the utility model, cannot limit the utility model with this certainly Interest field, therefore equivalent variations made according to the patent scope of the utility model still fall within the utility model and are covered Range.

Claims (10)

1. a kind of gear adjusting device, it is characterised in that：It is equipped with including shift rod, gear buckle and fixing piece, the shift rod Sliding groove, the fixing piece slidably coordinate with the sliding groove, and the shift rod is equipped with the length direction along the sliding groove The engaging tooth of arrangement, the gear buckle, which is actively set on the fixing piece and selectively with the engaging tooth, to be engaged.

2. gear adjusting device as described in claim 1, it is characterised in that：The gear adjusting device further includes elastic member Part, the elastic element are set between the gear buckle and the fixing piece, make the gear buckle engaging to provide one In the elastic force of the engaging tooth.

3. gear adjusting device as claimed in claim 2, it is characterised in that：The elastic element is compressed spring.

4. gear adjusting device as described in claim 1, it is characterised in that：The fixing piece is equipped with locating slot, the positioning There is slot engaging position and release the lock position, the gear buckle to have locating shaft, when the locating shaft is located at the engaging position, the gear Position buckle engages the engaging tooth, and when the locating shaft is located at the release the lock position, the gear buckle discharges the engaging tooth.

5. gear adjusting device as claimed in claim 4, it is characterised in that：The locating slot is of an L-shaped structure, the engaging position It is set to the lateral end of the L-type structure, the release the lock position is set to the vertical end of the L-type structure.

6. gear adjusting device as claimed in claim 4, it is characterised in that：The gear buckle is equipped with guide groove, described solid The pivot pin for determining part is slidably plugged in the guide groove relatively.

7. gear adjusting device as claimed in claim 4, it is characterised in that：The shift rod is equipped with the first driving portion and second Driving portion, first driving portion drive the locating shaft to slide into the engaging position, second driving from the release the lock position Portion drives the locating shaft to slide into the release the lock position from the engaging position.

8. gear adjusting device as claimed in claim 7, it is characterised in that：The shift rod is along the length side of the sliding groove To equipped with driver slot, the locating shaft is slidably plugged in the driver slot, and the both ends of the driver slot are respectively formed institute State the first driving portion and the second driving portion.

9. gear adjusting device as described in claim 1, it is characterised in that：The engaging tooth is equipped with driving inclined-plane, when described When the relatively described fixing piece of shift rod extends, the driving inclined-plane drives the gear buckle to be detached from the engaging tooth.

10. gear adjusting device as described in claim 1, it is characterised in that：The shift rod is equipped with along the sliding flute length The limiting slot in direction is spent, on the fixing piece there is spacing block set, the spacing block set to be slidably matched in the limiting slot.