CN204427324U - Gear crane - Google Patents

Gear crane Download PDF

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Publication number
CN204427324U
CN204427324U CN201420859817.XU CN201420859817U CN204427324U CN 204427324 U CN204427324 U CN 204427324U CN 201420859817 U CN201420859817 U CN 201420859817U CN 204427324 U CN204427324 U CN 204427324U
Authority
CN
China
Prior art keywords
rod
fixture
pivot joint
articulated
locking plate
Prior art date
Application number
CN201420859817.XU
Other languages
Chinese (zh)
Inventor
卢伟
Original Assignee
东莞市伟宏五金塑胶制品有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 东莞市伟宏五金塑胶制品有限公司 filed Critical 东莞市伟宏五金塑胶制品有限公司
Priority to CN201420859817.XU priority Critical patent/CN204427324U/en
Application granted granted Critical
Publication of CN204427324U publication Critical patent/CN204427324U/en
Priority claimed from DE202015105433.5U external-priority patent/DE202015105433U1/en

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/38Support for the head or the back for the head

Abstract

The utility model discloses a kind of gear crane, comprises the first fixture, the second fixture, head rod, the second connecting rod, the 3rd connecting rod, the 4th connecting rod and engaging assembly.One end of head rod and one end of the second connecting rod are articulated in the first fixture respectively and are set in distance, the other end of head rod and one end pivot joint of the 3rd connecting rod, the other end of the 3rd connecting rod and the second fixture pivot joint, the other end of the second connecting rod and one end pivot joint of the 4th connecting rod, the other end of the 4th connecting rod is articulated in the second fixture and is set in distance with the other end of the 3rd connecting rod, the second connecting rod and three connecting rod pivot joints.Engaging assembly is arranged at the 3rd connecting rod and the second fixture is rotated relative to the 3rd connecting rod with between the second fixture or locates.This gear crane relies on rod member pin-jointed structure to adjust the second fixture angle, is positioned by engaging assembly, and rod member pivot joint is simultaneously compact and can not expose outside sofa, does not affect outward appearance.

Description

Gear crane

Technical field

The utility model relates to furniture part field, particularly relates to a kind ofly can adjust sofa headrest gear and can not affect the gear crane of sofa outward appearance.

Background technology

Usually, more comfortable impression can be had to make consumer, the headrest of sofa can adopt the design of adjustable angle, the most direct mode realizing this design is exactly the hinge arranging a connection headrest in sofa, when needing the use gear changing headrest, pull headrest, one end of the hinge of headrest and inside thereof is rotated, after the relative sofa body of headrest turns an angle, headrest is in another use gear and hinge is located.This design makes consumer according to the use gear of self service condition adjustment headrest, thus can obtain best comfortable effect.But owing to being subject to the restriction of hinge self structure and installation site thereof, after the relative sofa body of headrest erects, the part of hinge can be exposed from the junction of headrest with sofa body, have impact on the outward appearance of sofa to a certain extent.

Therefore, be necessary to provide a kind of gear that can adjust headrest, the gear crane affecting outward appearance outside sofa can not be exposed again simultaneously.

Utility model content

The purpose of this utility model is to provide a kind of gear that can adjust headrest, can not expose again the gear crane affecting outward appearance outside sofa simultaneously.

To achieve these goals, the utility model provides a kind of gear crane, comprise the first fixture, the second fixture, head rod, the second connecting rod, the 3rd connecting rod, the 4th connecting rod and engaging assembly, wherein said first fixture and sofa body are fixed, and described second fixture is fixing with headrest.One end of described head rod and one end of described second connecting rod are articulated in described first fixture respectively and are set in distance, the other end of described head rod and one end pivot joint of described 3rd connecting rod, the other end of described 3rd connecting rod and described second fixture pivot joint, the other end of described second connecting rod and one end pivot joint of described 4th connecting rod, the other end of described 4th connecting rod is articulated in described second fixture and is set in distance with the other end of described 3rd connecting rod, described second connecting rod and described three connecting rod pivot joints and the position of described second connecting rod and described 3rd connecting rod pivot joint are between the two ends of described second connecting rod, the position of described 3rd connecting rod and described second connecting rod pivot joint is between the two ends of described 3rd connecting rod, described engaging assembly is arranged at described 3rd connecting rod makes described second fixture rotate relative to described 3rd connecting rod or locate with between described second fixture.

Compared with prior art, owing to being provided with described first fixture in gear crane described in the utility model, second fixture and multiple connecting rod, when mounted described first fixture is fixed in sofa body, by fixing to described second fixture and headrest, by the connection function of multiple connecting rod, relatively described first fixture in the position of described second fixture can be made to change, thus make the Angulation changes of the relative sofa body of headrest, realize the adjustment of gear, be arranged at described 3rd connecting rod to engage assembly with described between described second fixture and be then located after certain gear adjusted to by described headrest, it is made to remain on using state.Because the mutual pivot joint relation between multiple described connecting rod is compact, in the process that relatively described first fixture of multiple described connecting rod folds or launches, the teeter of described 3rd connecting rod and the 4th connecting rod is very little, and what be positioned at the junction of sofa body and headrest is exactly described 3rd connecting rod and the 4th connecting rod after installing, therefore this gear crane can't to expose outside sofa but can be hidden in sofa well as existing hinge product, therefore can not affect the outward appearance of sofa.

Preferably, described head rod and the second connecting rod extend towards the same side of described first fixture, described second connecting rod is articulated in the upper end of described first fixture, the position of described first fixture and described head rod pivot joint is positioned at the below of the position of described first fixture and described second connecting rod pivot joint, described 3rd connecting rod is articulated in one end of described second fixture, the position of described second fixture described second fixture relative to the position of described 4th connecting rod pivot joint and described 3rd connecting rod pivot joint is closer to the other end of described second fixture.

Particularly, one end of described second fixture and described 3rd connecting rod pivot joint other end be formed to described second fixture bends the articulated section of extension, and described 4th connecting rod is articulated in described articulated section.

Preferably, described head rod, described second connecting rod and described 4th connecting rod are bending arc-shaped rod, and described 3rd connecting rod is straight shape rod member.

Preferably, one end of described 3rd connecting rod and described second fixture pivot joint is provided with multiple engaging tooth, and described engaging assembly is arranged at described second fixture and is selectively sticked in multiple described engaging tooth.

Particularly, described engaging assembly comprises locking plate and elastic component, one end of described 3rd connecting rod and described second fixture pivot joint offers curved locating hole, one sidewall of described locating hole comprises the interconnective flank of tooth and plane, the described flank of tooth forms multiple described engaging tooth, one end of described second fixture and described 3rd connecting rod pivot joint offers accommodating hole, described accommodating hole comprises the first accommodating area and the second accommodating area that are interconnected, described locking plate is placed in described first accommodating area actively and described locking plate protrudes from the side of described second fixture and is sticked in described engaging tooth, one end of described elastic component is placed in described second accommodating area, the other end of described elastic component is resisted against described locking plate makes described locking plate perseverance have the trend being positioned at described first accommodating area, the sidewall of the junction of described first accommodating area and the second accommodating area caves inward the solution lock-bit that formation one slips into for one end of described locking plate.

More specifically, described 3rd connecting rod offers locating hole described in two, and the pivot axis of relatively described 3rd connecting rod of locating hole described in two and described second fixture is centrosymmetric and arranges; Described second fixture offers accommodating hole described in two, and the pivot axis of relatively described 3rd connecting rod of accommodating hole described in two and described second fixture is centrosymmetric and arranges.

More specifically, one end of described locking plate contacts at one end of described first accommodating area and can slip into described solution lock-bit under the pushing tow of described plane, the other end of described locking plate has the width depression identical with the thickness of described second fixture, and described depression is sticked in the other end of described first accommodating area.

More specifically, described elastic component is shell fragment, and one end of described shell fragment curls into circular arc and is placed in described second accommodating area.

More specifically, described 3rd connecting rod comprises straight-bar and two articulated slabs, articulated slab described in two is relatively fixed on the both sides of one end of described straight-bar, and articulated slab described in two is held on the both sides of described second fixture, and articulated slab described in two is respectively arranged with described locating hole.

Accompanying drawing explanation

Fig. 1 is the stereogram of the utility model gear crane.

Fig. 2 is the stereogram of another angle of the utility model gear crane.

Fig. 3 is the exploded view of the utility model gear crane.

Fig. 4 is locking plate and the elastic component matching relationship schematic diagram on the second fixture in accommodating hole in the utility model gear crane.

Fig. 5 is the front view of articulated slab.

Fig. 6 is the fastening state schematic diagram of the 3rd connecting rod and the second fixture locking plate and engaging tooth when initial position.

Fig. 7 is the fastening state schematic diagram of the second fixture relatively described 3rd connecting rod locking plate and engaging tooth when turning to another angle.

Fig. 8 is that one end of locking plate is entered to separate the position view of locking plate in locating hole and accommodating hole after lock-bit by pushing tow.

Fig. 9 is the second fixture of the utility model gear crane stereogram when being deployed into maximum angle.

Figure 10 is the stereogram of gear crane in another embodiment of the utility model.

Detailed description of the invention

Below in conjunction with the Figure of description provided, description is made to preferred embodiment of the present utility model.

Shown in composition graphs 1 to Fig. 3, in the present embodiment, provide a kind of gear crane, position and the angle of sofa body and sofa headrest relative sofa body and adjustment is rested the head on can be installed on, realize the adjustment of headrest gear, meet instructions for use.

Described gear crane comprises the first fixture 1, second fixture 2, head rod 3, second connecting rod 4, the 3rd connecting rod 5, the 4th connecting rod 6 and engaging assembly, wherein said first fixture 1 is wider rectangular flat board and fixes with sofa body, and described second fixture 2 comprises two mutually vertical and integrated rectangular flat boards and fixing with headrest.In four connecting rods, described head rod 3, described second connecting rod 4 and described 4th connecting rod 6 are bending arc-shaped rod, and described 3rd connecting rod 5 is straight shape rod member.The degree of crook of described head rod 3 and the second connecting rod 4 and similar length, and the degree of crook of described 4th connecting rod 6 and length are all greater than described head rod 3 and the second connecting rod 4.Described 3rd connecting rod 5 is one the longest in four rod members.

Described first fixture 1 is arranged in vertical when being installed on sofa body, one end of described head rod 3 and one end of described second connecting rod 4 are articulated in the same face of described first fixture 1 respectively and the same side towards described first fixture 1 extends, described head rod 3 and the second connecting rod 4 are set in distance on described first fixture 1, concrete, described second connecting rod 4 is articulated in the upper end of described first fixture 1, described first fixture 1 is positioned at the below of the position of described first fixture 1 and described second connecting rod 4 pivot joint with the position of described head rod 3 pivot joint.The other end of described head rod 3 and one end pivot joint of described 3rd connecting rod 5, the other end of described 3rd connecting rod 5 and described second fixture 2 pivot joint, the other end of described second connecting rod 4 and one end pivot joint of described 4th connecting rod 6, the other end of described 4th connecting rod 6 is articulated in described second fixture 2 and is set in distance with the other end of described 3rd connecting rod 5, concrete, described second fixture 2 and one end of described 3rd connecting rod 5 pivot joint other end be formed to described second fixture 2 bends the articulated section 21 of extension, described 4th connecting rod 6 is articulated in described articulated section 21, therefore the position of described second fixture 2 described second fixture 2 relative to the position of described 4th connecting rod 6 pivot joint and described 3rd connecting rod 5 pivot joint is closer to the other end of described second fixture 2.Described second connecting rod 4 and described 3rd connecting rod 5 pivot joint and the position of described second connecting rod 4 and described 3rd connecting rod 5 pivot joint are between the two ends of described second connecting rod 4, and the position of described 3rd connecting rod 5 and described second connecting rod 4 pivot joint is between the two ends of described 3rd connecting rod 5.As can be seen from Figure, be all the described head rod 3 of arc-shaped rod, described second connecting rod 4 and described 4th connecting rod 6 bending be all convex in described first fixture 1.Above between each rod member and fixture by using the connector such as rivet to realize pivot joint and all pivot axis are arranged in parallel, the plane at four connecting rod places is parallel mutually.By above pivot joint relation, four rod members can launch or fold near described first fixture 1 by relatively described first fixture 1, because the length of described head rod 3 and the second connecting rod 4 is close, therefore no matter folding or deployed condition, described 3rd connecting rod 5 and the 4th connecting rod 6 overlap all the time, this reduce both transverse widths, be conducive to gear crane hiding in sofa.

Described engaging assembly to be arranged between described 3rd connecting rod 5 with described second fixture 2 and to make described second fixture 2 rotate relative to described 3rd connecting rod 5 or locate.Engage assembly described in the present embodiment and be arranged at described second fixture 2, and described 3rd connecting rod 5 is provided with multiple engaging tooth with one end of described second fixture 2 pivot joint, described engaging assembly is selectively sticked in multiple described engaging tooth.In other implementations, also described engaging assembly can be arranged at described 3rd connecting rod 5, and multiple described engaging tooth is set on described second fixture 2.

Composition graphs 4, Fig. 5 again on the basis of Fig. 1 to Fig. 3, concrete, described engaging assembly comprises locking plate 7 and elastic component 8.

Described second fixture 2 offers two in the accommodating hole running through setting with one end of described 3rd connecting rod 5 pivot joint, and relatively described second fixture 2 of accommodating hole described in two is centrosymmetric with the pivot axis of described 3rd connecting rod 5 and arranges.Described accommodating hole comprises the first accommodating area 221 and the second accommodating area 222 be interconnected.The projection of described first accommodating area 221 on the thickness direction of described 3rd connecting rod 5 is roughly rectangle, the projection of described second accommodating area 222 on the thickness direction of described 3rd connecting rod 5 is roughly rounded, and the join domain of described first accommodating area 221 and the second accommodating area 222 caves inward to be formed away from the sidewall of the side of the pivot axis central axis of second fixture 2 one end center hole (namely in Fig. 4) of described second fixture 2 and the 3rd connecting rod 5 and separates lock-bit 223.

The shape of described locking plate 7 is corresponding to the shape of described first accommodating area 221 and be placed in described first accommodating area 221 actively, the width of described locking plate 7 is greater than the thickness of described second fixture 2, therefore, to stretch out described first accommodating area 221 outer and convexedly stretch in the both sides of described second fixture 2 putting into its both sides behind described first accommodating area 221 for described locking plate 7.Described locking plate 7 has identical with the thickness of described second fixture 2 or more bigger than the thickness of described second fixture 2 depression 71 of a width away from one end of described solution lock-bit 223, described depression 71 is stuck in the edge of described first accommodating area 221, the effect of described depression 71 is stable in described accommodating hole by described locking plate 7, prevent locking plate 7 from departing from from described accommodating hole in the process of activity and causing described second fixture 2 and described 3rd connecting rod 5 to lose instantaneously to engage positioning relation, thus avoid the situation that headrest falls down suddenly, ensure the use safety of consumer.One end that described locking plate 7 does not arrange described depression 71 contacts at the sidewall of described first accommodating area 221 and can slip into described solution lock-bit 223 under external force pushing tow.

Described elastic component 8 is shell fragment, and one end curls into circular arc, preferably, whole described elastic component 8 is made to form figure six, and described elastic component 8 one end in circular arc is placed in described second accommodating area 222, the other end of described elastic component 8 stretches into described first accommodating area 221 and is resisted against described locking plate 7 does not establish one end of described depression 71 to make this one end perseverance of described locking plate 7 have the trend being positioned at described first accommodating area 221.Different from described locking plate 7, the width of described elastic component 8 is equal to or less than the thickness of described second fixture 2, and therefore described elastic component 8 is fully placed in the both sides that can not protrude out described second fixture 2 in described accommodating hole.

Described 3rd connecting rod 5 comprises straight-bar 51 and two articulated slabs 52, articulated slab 52 described in two is relatively fixed on the both sides of one end of described straight-bar 51, articulated slab 52 described in two be clamped and fastened on described second fixture 2 one end both sides and with described second fixture 2 pivot joint.Arrange articulated slab 52 described in two and clamp described straight-bar 51, then not easily there is beat when Forced rotation in described second fixture 2, adds the stability of described gear crane.The rounded tabular in one end of described articulated slab 52 and described second fixture 2 pivot joint, and articulated slab 52 described in two offers respectively two and run through described articulated slab 52 and corresponding with accommodating hole described in two on described second fixture 2 respectively locating hole 53, these two the relatively described articulated slabs of described locating hole 53 52 are centrosymmetric with the pivot axis of described second fixture 2 and arrange.

The sidewall of described locating hole 53 near the edge of described articulated slab 52 comprises interconnective one section of flank of tooth 531 and one section of plane 532, and the described flank of tooth 531 has multiple described engaging tooth, and the middle part of described plane 532 is slightly towards outer process; Described locating hole 53 is curved near the sidewall of the pivot axis of described articulated slab 52.In actual production, described articulated slab 52 can be interfixed by two identical iron plates and form.

After described 3rd connecting rod 5 and articulated slab 52 described in described second fixture 2 pivot joint and two grip described second fixture 2, the part that described locking plate 7 convexedly stretches in described second fixture 2 both sides to stretch in described locating hole 53 and can be resisted against described engaging tooth.Utilize described locking plate 7 two ends supporting respectively to described engaging tooth and the first accommodating area 221 sidewall, described locking plate 7 can be limited between described articulated slab 52 and the second fixture 2, thus described 3rd connecting rod 5 and the second fixture 2 are located under multiple angle.By arranging described in two accommodating hole described in locating hole 53 and two, described 3rd connecting rod 5 and the engaging between the second fixture 2 are located and more to be balanced and firm, are conducive to improving the bearing capacity of headrest and extend service life of gear crane.

With reference to Fig. 4, preferably, described gear crane includes two enclosing covers 9, and enclosing cover 9 described in two is arranged at the outside of articulated slab 52 described in two respectively and hides described engaging assembly and engaging tooth.Described enclosing cover 9 is in the disc corresponding with described articulated slab 52, the circumferential edges of described enclosing cover 9 can arrange buckle, and at the edge of described articulated slab 52, draw-in groove is set accordingly, with coordinating of draw-in groove, described enclosing cover 99 is buckled on described articulated slab 5232 by buckle.

Illustrate how described second fixture 2 rotates relative to described 3rd connecting rod 5 and to locate below in conjunction with Fig. 1 and Fig. 6 to Fig. 9.

When described gear crane is in the initial position shown in Fig. 1, as shown in Figure 6, now the lower end of described locking plate 7 is resisted against the described flank of tooth 531 engaging tooth bottom, and the upper end of described locking plate 7 is resisted against the sidewall of described first upper end, accommodating area 221, described second fixture 2 cannot rotate by relatively described 3rd connecting rod 5 (articulated slab 52) again.When needs adjustment gear, upwards pull described second fixture 2, the invariant position of the described flank of tooth 531, and the lower end of described locking plate 7 is extruded described elastic component 8 by the described flank of tooth 531 pushing tow and makes described elastic component 8 be out of shape, the space produced by described elastic component 8 is out of shape, the lower end of described locking plate 7 can be moved a little downwards and be avoided and the supporting of the described flank of tooth 531, and now described second fixture 2 just can upwards rotate relative to described 3rd connecting rod 5 (articulated slab 52) and drive described engaging component integration to move.As shown in Figure 7, after turning over a described engaging tooth, described elastic component 8 relies on elasticity by described locking plate 7 upwards pushing tow, described locking plate 7 is engaged with the described flank of tooth 531 again, now described locking plate 7 is resisted against between the described flank of tooth 531 and the sidewall of the first accommodating area 221 and cannot moves, namely relatively described 3rd connecting rod 5 of described second fixture 2 cannot toward back rotation by locating, and now described second fixture 2 is just in another and uses gear.Continue upwards to rotate described second fixture 2, relatively described 3rd connecting rod 5 of described second fixture 2 can be made to be positioned at higher angle.When needs are toward described in back rotation during the second fixture 2, need first described second fixture 2 to be pulled extreme position as shown in Figure 9, in this process, as shown in Figure 8, the movement of described locking plate 7 receives the restriction of described plane 532 in locating hole 53, locking plate 7 described in the ejection of described plane 532, described locking plate 7 is made to overcome the elastic force of described elastic component 8 and described solution lock-bit 223 is slipped in upper end, slip into the described locking plate after described solution lock-bit 223 7 to depart from the described flank of tooth 531, described locking plate 7 no longer produces with described engaging tooth and supports, therefore described second fixture 2 can freely toward back rotation, until after described second fixture 2 gets back to initial position, described first accommodating area 221 is pushed up go back to from described solution lock-bit 223 in one end that described locking plate 7 is arranged in described solution lock-bit 223 by the inner side arcwall face of described locating hole 53, then just angle adjustment can be re-started.

For the ease of understanding in more than describing, described 3rd connecting rod 5 is assumed to and maintains static, in practice, described first fixture 1 is fixed on sofa body, and described 3rd connecting rod 5 can fold or launch by relatively described first fixture 1 in fact, but be consistent in the correlation between described 3rd connecting rod 5 with described second fixture 2 and above description.

In actual production, gear crane described in two or more can be set in sofa, and connect with rod member between two or more described gear crane, make its action together, by the quantity that increase is gear crane, can strengthen the support degree to headrest, and the process that gear is regulated is more stable.When the quantity arranging described gear crane is two, can be that specular is arranged by two described gear cranes, namely one of them as shown in Figure 1, and another is as shown in Figure 10.

The utility model compared with prior art, owing to being provided with described first fixture 1 in gear crane described in the utility model, second fixture 2 and multiple connecting rod, when mounted described first fixture 1 is fixed in sofa body, by fixing with headrest for described second fixture 2, by the connection function of multiple connecting rod, relatively described first fixture 1 in the position of described second fixture 2 can be made to change, thus make the Angulation changes of the relative sofa body of headrest, realize the adjustment of gear, to be arranged between described 3rd connecting rod 5 with described second fixture 2 described engages assembly and is then located after certain gear adjusted to by described headrest, it is made to remain on using state.Because the mutual pivot joint relation between multiple described connecting rod is compact, in the process that relatively described first fixture 1 of multiple described connecting rod folds or launches, the teeter of described 3rd connecting rod 5 and the 4th connecting rod 6 is very little, and what be positioned at the junction of sofa body and headrest is exactly described 3rd connecting rod 5 and the 4th connecting rod 6 after installing, therefore this gear crane can't to expose outside sofa but can be hidden in sofa well as existing hinge product, therefore can not affect the outward appearance of sofa.

Above disclosedly be only preferred embodiments of the present utility model, its effect facilitates those skilled in the art to understand and implements according to this, certainly the interest field of the utility model can not be limited with this, therefore according to the equivalent variations that the utility model claim is done, the scope that the utility model is contained still is belonged to.

Claims (10)

1. a gear crane, it is characterized in that: comprise the first fixture, the second fixture, head rod, the second connecting rod, the 3rd connecting rod, the 4th connecting rod and engaging assembly, wherein said first fixture and sofa body are fixed, and described second fixture is fixing with headrest;
One end of described head rod and one end of described second connecting rod are articulated in described first fixture respectively and are set in distance, the other end of described head rod and one end pivot joint of described 3rd connecting rod, the other end of described 3rd connecting rod and described second fixture pivot joint, the other end of described second connecting rod and one end pivot joint of described 4th connecting rod, the other end of described 4th connecting rod is articulated in described second fixture and is set in distance with the other end of described 3rd connecting rod, described second connecting rod and described three connecting rod pivot joints and the position of described second connecting rod and described 3rd connecting rod pivot joint are between the two ends of described second connecting rod, the position of described 3rd connecting rod and described second connecting rod pivot joint is between the two ends of described 3rd connecting rod, described engaging assembly is arranged at described 3rd connecting rod makes described second fixture rotate relative to described 3rd connecting rod or locate with between described second fixture.
2. gear crane as claimed in claim 1, it is characterized in that: described head rod and the second connecting rod extend towards the same side of described first fixture, described second connecting rod is articulated in the upper end of described first fixture, the position of described first fixture and described head rod pivot joint is positioned at the below of the position of described first fixture and described second connecting rod pivot joint, described 3rd connecting rod is articulated in one end of described second fixture, the position of described second fixture described second fixture relative to the position of described 4th connecting rod pivot joint and described 3rd connecting rod pivot joint is closer to the other end of described second fixture.
3. gear crane as claimed in claim 2, it is characterized in that: one end of described second fixture and described 3rd connecting rod pivot joint other end be formed to described second fixture bends the articulated section of extension, and described 4th connecting rod is articulated in described articulated section.
4. gear crane as claimed in claim 1, is characterized in that: described head rod, described second connecting rod and described 4th connecting rod are bending arc-shaped rod, and described 3rd connecting rod is straight shape rod member.
5. gear crane as claimed in claim 1, it is characterized in that: one end of described 3rd connecting rod and described second fixture pivot joint is provided with multiple engaging tooth, described engaging assembly is arranged at described second fixture and is selectively sticked in multiple described engaging tooth.
6. gear crane as claimed in claim 5, it is characterized in that: described engaging assembly comprises locking plate and elastic component, one end of described 3rd connecting rod and described second fixture pivot joint offers curved locating hole, one sidewall of described locating hole comprises the interconnective flank of tooth and plane, the described flank of tooth forms multiple described engaging tooth, one end of described second fixture and described 3rd connecting rod pivot joint offers accommodating hole, described accommodating hole comprises the first accommodating area and the second accommodating area that are interconnected, described locking plate is placed in described first accommodating area actively and described locking plate protrudes from the side of described second fixture and is sticked in described engaging tooth, one end of described elastic component is placed in described second accommodating area, the other end of described elastic component is resisted against described locking plate makes described locking plate perseverance have the trend being positioned at described first accommodating area, the sidewall of the junction of described first accommodating area and the second accommodating area caves inward the solution lock-bit that formation one slips into for one end of described locking plate.
7. gear crane as claimed in claim 6, it is characterized in that: described 3rd connecting rod offers locating hole described in two, the pivot axis of relatively described 3rd connecting rod of locating hole described in two and described second fixture is centrosymmetric and arranges; Described second fixture offers accommodating hole described in two, and the pivot axis of relatively described 3rd connecting rod of accommodating hole described in two and described second fixture is centrosymmetric and arranges.
8. gear crane as claimed in claim 6, it is characterized in that: one end of described locking plate contacts at one end of described first accommodating area and can slip into described solution lock-bit under the pushing tow of described plane, the other end of described locking plate has the width depression identical with the thickness of described second fixture, and described depression is sticked in the other end of described first accommodating area.
9. gear crane as claimed in claim 6, it is characterized in that: described elastic component is shell fragment, one end of described shell fragment curls into circular arc and is placed in described second accommodating area.
10. gear crane as claimed in claim 6, it is characterized in that: described 3rd connecting rod comprises straight-bar and two articulated slabs, articulated slab described in two is relatively fixed on the both sides of one end of described straight-bar, articulated slab described in two is held on the both sides of described second fixture, and articulated slab described in two is respectively arranged with described locating hole.
CN201420859817.XU 2014-12-30 2014-12-30 Gear crane CN204427324U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420859817.XU CN204427324U (en) 2014-12-30 2014-12-30 Gear crane

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201420859817.XU CN204427324U (en) 2014-12-30 2014-12-30 Gear crane
DE202015105433.5U DE202015105433U1 (en) 2014-12-30 2015-10-14 Support system for adjusting a headrest
DE102015117461.8A DE102015117461A1 (en) 2014-12-30 2015-10-14 Support system for adjusting a headrest

Publications (1)

Publication Number Publication Date
CN204427324U true CN204427324U (en) 2015-07-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420859817.XU CN204427324U (en) 2014-12-30 2014-12-30 Gear crane

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105054659A (en) * 2015-09-08 2015-11-18 东莞市伟宏五金塑胶制品有限公司 Electric headrest frame
DE102015117461A1 (en) 2014-12-30 2016-06-30 Dongguan Weihong Hardware And Plastic Products Co., Ltd. Support system for adjusting a headrest
EP3552520A1 (en) * 2018-04-09 2019-10-16 Dongguan Weihong Hardware and Plastic Products Co., Ltd. Electric support system for headrest

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015117461A1 (en) 2014-12-30 2016-06-30 Dongguan Weihong Hardware And Plastic Products Co., Ltd. Support system for adjusting a headrest
CN105054659A (en) * 2015-09-08 2015-11-18 东莞市伟宏五金塑胶制品有限公司 Electric headrest frame
EP3552520A1 (en) * 2018-04-09 2019-10-16 Dongguan Weihong Hardware and Plastic Products Co., Ltd. Electric support system for headrest

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