CN221256482U

CN221256482U - Functional shaft and hinge device

Info

Publication number: CN221256482U
Application number: CN202322920397.3U
Authority: CN
Inventors: 汪晓杨; 吕吉璐
Original assignee: Zhejiang Jin Ang Hardware Products Co ltd
Current assignee: Zhejiang Jin Ang Hardware Products Co ltd
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-07-02
Anticipated expiration: 2033-10-26

Abstract

The application relates to a functional shaft and a hinge device, wherein the functional shaft comprises a shell, a rotating head, a piston cylinder, a hydraulic shaft and a return spring, the end part of the piston cylinder, which faces the rotating head, is provided with a spiral guide surface which extends around the axial direction of the piston cylinder in a spiral way, and the rotating head is fixedly provided with a driving head corresponding to the spiral guide surface. The outside of rotating the head is located to the fixed cover of casing, and the drive head can promote the piston cylinder through the spiral guide surface and remove and compress reset spring towards the direction of keeping away from the rotating the head, and the spiral guide surface is equipped with a plurality of interval distribution's positioning card groove along self extending direction, and the drive head can the joint in the positioning card groove that corresponds. When the return spring rebounds and pushes the piston cylinder to move toward the direction approaching the rotary head, the spiral guide surface can push the drive head to drive the rotary head and the housing to rotate in the direction opposite to the preset direction. The functional shaft and the hinge device provided by the application solve the problem that the rolling pin is easy to fall off due to deformation of the assembly Kong Shouli on the side wall of the functional shaft shell.

Description

Functional shaft and hinge device

Technical Field

The application relates to the technical field of hinges, in particular to a functional shaft and a hinge device,

Background

In order to avoid the damage to the door body or the wall body caused by the installation of the traditional door closer, the traditional door closer is generally replaced by a hydraulic hinge. Specifically, the hydraulic hinge can drive the functional shaft to synchronously rotate in the rotating process, and the functional shaft can play a certain hydraulic damping role on the rotation of the hydraulic hinge, so that the door frame or the wall surface is prevented from being damaged due to the too high closing speed of the door body.

In the process of door body rotation, the door body generally drives the shell of the functional shaft to synchronously rotate through the hinge structure, and a rolling pin (or a bolt) is arranged between the functional shaft shell and a damping piston cylinder in the functional shaft, one end of the rolling pin is fixedly inserted into the side wall of the functional shaft shell, and the other end of the rolling pin is in butt fit with the damping piston cylinder, so that the functional shaft shell can drive the damping piston cylinder to move along the axial direction through the rolling pin. The damping piston cylinder can be subjected to the resistance action of hydraulic oil in the axial movement process, so that the door closing speed of the door body is reduced.

But the casing of function axle is thinner, and the effort between kingpin and the damping piston section of thick bamboo is great, consequently, along with the increase of door body switching number of times, the pilot hole that is used for inserting the kingpin on the function axle casing lateral wall can atress deformation gradually, so, the kingpin takes place to drop easily, and then leads to the unable normal work of hydraulic hinge.

Disclosure of utility model

Accordingly, it is necessary to provide a functional shaft and hinge device to solve the problem that the rolling pin is easy to fall off due to deformation of the assembly Kong Shouli on the side wall of the functional shaft housing.

The functional shaft comprises a shell, a rotating head, a piston cylinder, a hydraulic shaft and a return spring, wherein the piston cylinder is sleeved on the outer side of the hydraulic shaft and is in sliding fit with the hydraulic shaft along the axial direction of the piston cylinder, one end of the return spring is in axial limiting fit with the hydraulic shaft, the other end of the return spring is connected with the piston cylinder, the rotating head is rotatably arranged at one end of the piston cylinder far away from the return spring and is coaxially arranged with the hydraulic shaft, a spiral guide surface which extends spirally around the rotating head is arranged at the end of the piston cylinder facing the rotating head, a driving head is fixedly arranged on the rotating head corresponding to the spiral guide surface, and the driving head is in abutting fit with the spiral guide surface. The shell is fixedly sleeved on the outer side of the rotating head, and can drive the rotating head to synchronously rotate around the axial direction of the shell; when the shell drives the rotating head and the driving head to rotate along the preset direction, the driving head can push the piston cylinder to move towards the direction far away from the rotating head through the spiral guide surface and compress the reset spring, the spiral guide surface is provided with a plurality of positioning clamping grooves distributed at intervals along the extending direction of the spiral guide surface, and the driving head can be clamped in the corresponding positioning clamping grooves. When the return spring rebounds and pushes the piston cylinder to move toward the direction approaching the rotary head, the spiral guide surface can push the drive head to drive the rotary head and the housing to rotate in the direction opposite to the preset direction.

In one embodiment, the positioning slot comprises a first slot, a second slot and a third slot, the first slot, the second slot and the third slot are sequentially distributed along the direction from the reset spring to the rotating head, when the rotating angle of the rotating head is zero, the driving head is clamped in the first slot, when the rotating angle of the rotating head is a first preset angle, the driving head is clamped in the second slot, and when the rotating angle of the rotating head is a second preset angle, the driving head is clamped in the third slot.

In one embodiment, the helical guide surface between the first groove and the second groove is defined as a first guide section, and the extending direction of the first guide section is arranged obliquely with respect to the axial direction of the piston cylinder.

In one embodiment, the helical guide surface between the second groove and the third groove is defined as a second guide section, which is arranged perpendicularly to the axial direction of the piston cylinder.

In one embodiment, the piston cylinder is provided with a stop wall, which is arranged opposite the screw guide surface, the stop wall and the screw guide surface enclosing a first groove.

In one embodiment, the piston cylinder is provided with a plurality of spiral guide surfaces which are distributed along the circumferential direction of the piston cylinder and are arranged in a rotationally symmetrical manner, and the plurality of driving heads and the plurality of spiral guide surfaces are arranged in a one-to-one correspondence.

In one embodiment, the rotating head comprises a fixed section and a matching section, the matching section is connected to one end of the fixed section, which is close to the reset spring, the rotating head is fixedly connected to the shell through the fixed section, the outer wall of the matching section can be attached to the inner wall of the piston cylinder and is movably matched with the inner wall of the piston cylinder, one end of the driving head is fixed to the outer wall of the matching section, and the other end of the driving head extends outwards along the radial direction of the matching section.

In one embodiment, the inner wall of the housing and the outer wall of the swivel are snap fit along the perimeter Xiang Guding.

In one embodiment, the inner wall of the shell is provided with first clamping strips extending along the axial direction of the shell, a plurality of first clamping strips are arranged at intervals along the circumferential direction of the shell, a first clamping groove is formed between every two adjacent first clamping strips, the outer wall of the rotating head is provided with second clamping strips extending along the axial direction of the shell corresponding to the first clamping grooves, and each second clamping strip is respectively clamped in the corresponding first clamping groove. The second clamping strips are arranged along the circumferential direction of the rotating head at intervals, second clamping grooves are formed between the adjacent second clamping strips, and each first clamping strip is respectively clamped in the corresponding second clamping groove.

The application also provides a hinge device which comprises a first mounting plate group, a second mounting plate group, a hinge bracket and the functional shaft in any embodiment, wherein the first mounting plate group is movably connected with the second mounting plate group through the hinge bracket, the functional shaft is arranged on one of the first mounting plate group and the second mounting plate group, the hinge bracket is movably connected with the functional shaft, and the functional shaft is used for increasing the motion damping of the hinge bracket.

Compared with the prior art, the functional shaft and the hinge device have the advantages that the rotating force of the shell is transmitted to the piston cylinder through the rotating head and the driving head, and the shell is fixedly sleeved on the outer side of the rotating head, and the driving head is fixed on the rotating head.

And moreover, through the clamping fit of the driving head and the positioning clamping groove, the door opening angle can be controlled, and the opening and closing convenience of the door body is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural view of a hinge device according to an embodiment of the present application;

FIG. 2 is a partially exploded view of a hinge assembly according to an embodiment of the present application;

FIG. 3 is a front view of a hinge assembly according to one embodiment of the present application;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a schematic structural diagram of a functional shaft according to an embodiment of the present application;

FIG. 6 is a schematic diagram showing a partial structure of a functional shaft according to an embodiment of the present application;

FIG. 7 is a partial exploded view of a functional shaft according to an embodiment of the present application;

FIG. 8 is a schematic diagram showing a partial structure of a functional shaft according to an embodiment of the present application;

fig. 9 is an exploded view of a valve needle structure according to an embodiment of the present application.

Reference numerals: 100. a first mounting plate set; 110. a first housing; 120. a first bracket; 130. a first elongated aperture; 140. a first fixing hole; 200. a second mounting plate set; 210. a second housing; 220. a second bracket; 230. a second elongated aperture; 240. a second fixing hole; 300. a hinged bracket; 400. a functional shaft; 410. a housing; 411. the first clamping strip; 412. a first clamping groove; 420. a rotating head; 421. a drive head; 422. a fixed section; 423. a mating section; 424. a limiting ring; 425. an extension section; 426. a second clamping strip; 427. a second clamping groove; 430. a piston cylinder; 431. a convex strip; 432. a spiral guide surface; 4321. a first guide section; 4322. a second guide section; 433. positioning clamping grooves; 4331. a first groove; 4332. a second groove; 4333. a third groove; 434. a core; 4341. a through hole; 435. a stop wall; 440. a hydraulic shaft; 441. a groove; 442. a stop portion; 443. a hydraulic hole; 450. a return spring; 460. a valve needle structure; 461. a first driving lever; 4611. screwing the head; 4612. a limiting block; 462. a second driving lever; 4621. a non-circular pole segment; 4622. a notch portion; 4623. a convex ring; 463. a first helical gear; 464. a second helical gear; 465. a retractable needle body; 4651. a non-circular protrusion.

Detailed Description

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-9, in order to solve the problem that the rolling pin is easy to fall off due to deformation of the assembly Kong Shouli on the side wall of the housing 410 of the functional shaft 400, the application provides a functional shaft 400 and a hinge device with more stable and reliable quality.

In an embodiment, as shown in fig. 1 to 4, the hinge device includes a first mounting plate set 100, a second mounting plate set 200, a hinge bracket 300 and a functional shaft 400, the first mounting plate set 100 is movably connected to the second mounting plate set 200 through the hinge bracket 300, the functional shaft 400 is mounted on one of the first mounting plate set 100 and the second mounting plate set 200, the hinge bracket 300 is movably connected to the functional shaft 400, and the functional shaft 400 can increase the motion damping of the hinge bracket 300 so as to realize slow closing of the first mounting plate and the second mounting plate, and further realize slow closing of the door body.

In one embodiment, as shown in fig. 1 to 4, the first mounting plate group 100 includes a first fastener (not shown), a first housing 110, and a first bracket 120, the hinge bracket 300 is connected to the first bracket 120, and one of the first bracket 120 and the first housing 110 is provided with a first elongated hole 130 extending in a first direction (which is one of a length direction and a width direction of the first mounting plate group 100), and the other is provided with a first fixing hole 140, and the first fastener sequentially penetrates the first fixing hole 140 and the first elongated hole 130 and fixes the first fixing hole 140 to an arbitrary position of the first elongated hole 130, so that the first bracket 120 can be fixed to a preset position of the first housing 110 in the first direction.

Also, the second mounting plate group 200 includes a second fastening member (not shown), a second housing 210, and a second bracket 220, the hinge bracket 300 being coupled to the second bracket 220, and one of the second bracket 220 and the second housing 210 is provided with a second elongated hole 230 extending in a second direction (which is the other of the length direction and the width direction of the second mounting plate group 200), and the other is provided with a second fixing hole 240, which is sequentially penetrated through the second fixing hole 240 and the second elongated hole 230 and fixes the second fixing hole 240 to an arbitrary position of the second elongated hole 230, so that the second bracket 220 can be fixed to a preset position of the second housing 210 in the second direction.

It should be noted that the first direction and the second direction are different, and in this embodiment, the first direction and the second direction are perpendicular to each other.

In this way, the position adjustment of the first and second mounting plate groups 100 and 200 along the length direction (the mounting height of the door body can be adjusted) and the width direction (the distance between the door body and the door frame can be adjusted) can be achieved, thereby improving the mounting flexibility of the door body.

Further, in order to improve the stress balance of the first mounting plate set 100, in an embodiment, two ends of the first mounting plate along the length direction are respectively provided with a set of first elongated holes 130 and first fixing holes 140. Similarly, to improve the force balance of the second mounting plate set 200, in an embodiment, a set of second elongated holes 230 and second fixing holes 240 are respectively provided at two ends of the second mounting plate along the length direction.

In one embodiment, as shown in fig. 5-8, the present application provides a functional shaft 400 comprising a housing 410, a rotary head 420, a piston cylinder 430, a hydraulic shaft 440, and a return spring 450. The piston cylinder 430 is sleeved on the outer side of the hydraulic shaft 440 and slidably cooperates with the hydraulic shaft 440 along the axial direction thereof (the axial direction of the piston cylinder 430), and it should be noted that, since the piston cylinder 430 is sleeved on the outer side of the hydraulic shaft 440, the piston cylinder 430 and the hydraulic shaft 440 are coaxially disposed, and that "the piston cylinder 430 slidably cooperates with the hydraulic shaft 440 along the axial direction thereof" means that the piston cylinder 430 can move along the axial direction thereof (the piston cylinder 430 and the hydraulic shaft 440 are mutually sleeved and coaxially disposed), and that the piston cylinder 430 cannot move relative to the hydraulic shaft 440 in other forms, for example, the piston cylinder 430 cannot rotate relative to the hydraulic shaft 440. Specifically, the outer peripheral side of the hydraulic shaft 440 is provided with an axially extending groove 441, the piston cylinder 430 is provided with an axially extending protrusion 431, and the protrusion 431 is movably clamped in the groove 441 along the axial direction, so that the piston cylinder 430 can move axially relative to the hydraulic shaft 440, and the piston cylinder 430 cannot rotate around the hydraulic shaft 440.

The return spring 450 is sleeved on the hydraulic shaft 440, it can be appreciated that the functional shaft 400 can also adopt other forms of elastic members, and only the elastic members are required to provide corresponding elastic force, in the application, the scheme that the return spring 450 is sleeved on the hydraulic shaft 440 is adopted, on one hand, because the return spring 450 is easy to install, the installation difficulty of the functional shaft 400 can be reduced, and further the cost is reduced, and on the other hand, the return spring 450 is sleeved on the outer side of the hydraulic shaft 440, the installation strength of the return spring 450 can be improved, and the return spring 450 cannot be easily separated from the hydraulic shaft 440.

One end of the return spring 450 is in axial limit fit with the hydraulic shaft 440, and the other end is connected to the piston cylinder 430. Specifically, the end of the hydraulic shaft 440 is fixedly sleeved with a circular stop portion 442, and the stop portion 442 is stopped at one end of the return spring 450 to provide a reverse supporting force to the return spring 450 and prevent the return spring 450 from being separated from the hydraulic shaft 440. The return spring 450 may abut against the stopper 442, or may be fixedly connected to the stopper 442.

The rotating head 420 is rotatably disposed at an end of the piston cylinder 430 away from the return spring 450 and coaxially disposed with the hydraulic shaft 440, and an end of the piston cylinder 430 facing the rotating head 420 is provided with a screw guide surface 432 extending spirally around its own axial direction (axial direction of the piston cylinder 430), and it is noted that "the screw guide surface 432 is disposed at an end of the piston cylinder 430" means that the screw guide surface 432 is an end surface of the piston cylinder 430 or at least a partial end surface of the piston cylinder 430.

The screw guide surface 432 is provided with a plurality of positioning grooves 433 distributed at intervals along the extending direction thereof. The rotary head 420 is fixedly provided with a driving head 421 corresponding to the screw guide surface 432, and the driving head 421 is in abutting engagement with the screw guide surface 432. The positioning groove 433 is used to limit the driving head 421 and the spiral guide surface 432 from moving further, that is, the driving head 421 may be fixed to a specific portion of the spiral guide surface 432 (i.e., each positioning groove 433).

The casing 410 is used for connecting the hinge bracket 300, and the hinge bracket 300 can drive the casing 410 to rotate. The casing 410 is fixedly sleeved on the outer side of the rotating head 420, and the casing 410 can drive the rotating head 420 to synchronously rotate around the axial direction of the rotating head 420 (the axial direction of the rotating head 420). It should be noted that, for convenience of assembly, the casing 410 is not only sleeved on the outer side of the rotary head 420, but is sleeved on the outer side of the internal parts of the whole functional shaft 400, that is, the rotary head 420, the piston cylinder 430, the hydraulic shaft 440 and the return spring 450 are all disposed in the casing 410.

When in the door-open state, the housing 410 can drive the rotary head 420 and the driving head 421 to rotate along a preset direction, and the driving head 421 can push the piston cylinder 430 to move away from the rotary head 420 and compress the return spring 450 through the screw guide surface 432 during rotation. At this time, the check valve inside the piston cylinder 430 is in an opened state, and hydraulic oil can smoothly pass through the check valve and flow toward one side so as to reduce the resistance of opening the door.

Specifically, as shown in fig. 8, a core 434 is clamped inside the piston cylinder 430, the core 434 is provided with a through hole 4341 penetrating itself (the core 434 itself) along the axial direction of the piston cylinder 430, and the inner diameter of one end of the through hole 4341 near the rotating head 420 is larger than the inner diameter of one end of the through hole 4341 far away from the rotating head 420, so that a stop step (not shown) is formed inside the through hole 4341, and a ball (not shown) is movably arranged at the larger inner diameter end of the through hole 4341. When the piston cylinder 430 drives the core 434 to move toward the direction away from the rotating head 420, hydraulic oil on the side of the core 434 away from the rotating head 420 enters the side of the core 434 close to the rotating head 420 through the through hole 4341, at this time, the balls are located in the direction away from the stop step, the hydraulic oil can smoothly flow through the through hole 4341, and the resistance of opening the door is greatly reduced.

When the rotary head 420 rotates by a corresponding angle, the driving head 421 can be engaged with the corresponding positioning slot 433. Specifically, the corresponding positioning slot 433 may be provided as needed, so that the door body can be kept stationary after being rotated by a specific angle.

When in the door-closed state, the return spring 450 can rebound and push the piston cylinder 430 to move toward the direction approaching the rotary head 420, and the spiral guide surface 432 can push the driving head 421 to rotate the rotary head 420 and the housing 410 in the direction opposite to the preset direction. It will also be appreciated that, as opposed to opening the door, when the door is closed, power is derived from the compressed return spring 450, the return spring 450 pushing the rotator head 420 through the helical guide surface 432 to rotate in the opposite direction. That is, the return spring 450 can push the rotator head 420 to automatically turn around, that is, the return spring 450 can push the door body to automatically close.

At this time, the balls are located in a direction close to the stopping step, and the through hole 4341 is blocked under the pressure of the hydraulic oil, so that the hydraulic oil cannot flow through the through hole 4341, so that the hydraulic oil can only enter the side of the core 434 far away from the rotating head 420 from the hydraulic oil on the side of the core 434 close to the rotating head 420 through other gaps with smaller flow areas, and therefore, the door closing resistance is remarkably improved, and the door closing speed is remarkably reduced.

In the present application, the rotational force of the housing 410 is transferred to the piston cylinder 430 through the rotating head 420 and the driving head 421, and since the housing 410 is fixedly sleeved on the outer side of the rotating head 420 and the driving head 421 is fixed to the rotating head 420, compared with the prior art in which the rotational force is transferred through the needle roller and the bolt, the rotating head 420 and the driving head 421 of the present application do not need to be penetrated through the side wall of the housing 410, and thus, even if the door is opened and closed for many times, the problem that the rotating head 420 or the driving head 421 falls off due to the local stress deformation of the side wall of the housing 410 is not existed, thereby greatly improving the stability in use and the service life of the functional shaft 400.

Moreover, through the joint cooperation of the driving head 421 and the positioning clamping groove 433, the door opening angle can be controlled, and the opening and closing convenience of the door body is further improved.

In an embodiment, as shown in fig. 7, the number of the positioning slots 433 is three, which are respectively defined as a first slot 4331, a second slot 4332 and a third slot 4333, the first slot 4331, the second slot 4332 and the third slot 4333 are sequentially distributed along the direction from the return spring 450 to the rotating head 420, when the rotating angle of the rotating head 420 is zero, the driving head 421 is clamped in the first slot 4331, when the rotating angle of the rotating head 420 is a first preset angle (including but not limited to 90 degrees), the driving head 421 is clamped in the second slot 4332, and when the rotating angle of the rotating head 420 is a second preset angle (including but not limited to 180 degrees), the driving head 421 is clamped in the third slot 4333.

However, the present invention is not limited thereto, and more positioning slots 433 may be provided according to actual needs, which are not shown here.

Further, in an embodiment, as shown in fig. 7, the piston cylinder 430 is provided with a stop wall 435, the stop wall 435 is disposed opposite to the screw guide surface 432, and the stop wall 435 and the screw guide surface 432 enclose a first groove 4331.

Specifically, the stop wall 435 is a vertical wall surface extending along the axial direction of the piston cylinder 430, so that the stop wall 435 and a part of the spiral guide surface 432 form an approximately V-shaped space, which is beneficial to stabilizing the whole driving head 421, and the driving head 421 cannot continue to rotate under the stop action of the stop wall 435, which is beneficial to the stability of closing the door body.

In an embodiment, as shown in fig. 7, the spiral guide surface 432 between the first groove 4331 and the second groove 4332 is defined as a first guide section 4321, and the extending direction of the first guide section 4321 is inclined with respect to the axial direction of the piston cylinder 430, and the first guide section 4321 is curved, so it is understood that a tangent line at an arbitrary position of the first guide section 4321 and the axial direction of the piston cylinder 430 are disposed at an angle (may be regarded as an angle between two straight lines, and the angle is less than or equal to 90 degrees), and an angle a between the tangent line at the arbitrary position of the first guide section 4321 and the axial direction of the piston cylinder 430 satisfies, 0<a is equal to or less than 80 °. Preferably 0< a <60 °.

It can be understood that, the smaller the included angle a between the tangent line at any position of the first guiding section 4321 and the axial direction of the piston cylinder 430, the closer the first guiding section 4321 is disposed along the axial direction of the piston cylinder 430, at this time, the easier the return spring 450 pushes the piston cylinder 430 to move along the axial direction during the return, that is, the more beneficial for the door body to be automatically closed.

In one embodiment, as shown in fig. 7, the spiral guide surface 432 between the second groove 4332 and the third groove 4333 is defined as a second guide section 4322, the second guide section 4322 is a plane, and the second guide section 4322 and the axial direction of the piston cylinder 430 are vertically arranged.

Thus, when the door opening angle is between the first preset angle and the second preset angle, the second guiding section 4322 does not push the rotating head 420 to rotate reversely, i.e. the door body is not closed automatically.

Further, by providing the third groove 4333, the driving head 421 does not excessively rotate with respect to the piston cylinder 430.

In order to improve the stability of the fit between the rotary head 420 and the piston cylinder 430, in one embodiment, as shown in fig. 7, the piston cylinder 430 is provided with a plurality of spiral guide surfaces 432, the plurality of spiral guide surfaces 432 are distributed along the circumferential direction of the piston cylinder 430 and are rotationally symmetrically arranged, the number of the driving heads 421 is also plural, and the driving heads 421 and the spiral guide surfaces 432 are arranged in a one-to-one correspondence.

In this way, it is advantageous to disperse the driving force of the rotary head 420 to various positions of the piston cylinder 430 in the circumferential direction, thereby improving the mating stability of the rotary head 420 and the piston cylinder 430.

Specifically, in one embodiment, the number of the spiral guide surfaces 432 is two, which are defined as a first surface and a second surface, respectively, which are disposed 180 degrees rotationally symmetrically.

In an embodiment, as shown in fig. 6 to 7, the rotating head 420 includes a fixed segment 422 and a mating segment 423, the mating segment 423 is connected to an end of the fixed segment 422 near the return spring 450, the rotating head 420 is fixedly connected to the housing 410 through the fixed segment 422, the outer diameter of the mating segment 423 is smaller than the outer diameter of the fixed segment 422, and the outer wall of the mating segment 423 can be attached to the inner wall of the piston cylinder 430 and is in movable fit (including rotation and axial movement) with the inner wall of the piston cylinder 430. The driving head 421 is fixed at one end to the outer wall of the fitting segment 423 and extends outwardly in the radial direction of the fitting segment 423 (i.e., in a direction away from the axis of the fitting segment 423) at the other end.

Through setting up the cooperation section 423, and the outer wall of cooperation section 423 can paste the inner wall of locating piston section 430 and with the inner wall clearance fit of piston section 430 for when rotating head 420 and piston relative rotation, can not take place the decentration between head 420 and the piston.

Specifically, the rotary head 420 and the driving head 421 are integrally formed.

In this way, the structural strength of the driving head 421 is greatly improved.

Further, in one embodiment, the driving head 421 has an elongated shape, and the driving head 421 extends along the axial direction of the rotating head 420.

In an embodiment, as shown in fig. 6-7, the rotating head 420 further includes a limiting ring 424, the limiting ring 424 is fixedly sleeved on the outer side of the matching section 423, the limiting ring 424 is disposed between the driving head 421 and the fixed section 422, one end of the driving head 421 is connected to the limiting ring 424, and the other end extends along the axial direction of the rotating head 420.

In one embodiment, as shown in fig. 6-7, the rotator head 420 further comprises an extension 425, the extension 425 being connected to an end of the fixed segment 422 remote from the mating segment 423.

In one embodiment, the inner wall of the housing 410 and the outer wall of the rotator head 420 are fixedly snap-fitted along the circumferential direction (the circumferential direction of the housing 410 or the circumferential direction of the rotator head 420).

Specifically, in an embodiment, as shown in fig. 5-7, the inner wall of the housing 410 is provided with first clamping strips 411 extending along the axial direction thereof, a plurality of first clamping strips 411 are arranged at intervals along the circumferential direction of the housing 410, and first clamping grooves 412 also extending along the axial direction of the housing 410 are formed between adjacent first clamping strips 411. The outer wall of the rotating head 420 is provided with second clamping strips 426 extending along the axial direction (the axial direction of the rotating head 420) corresponding to the first clamping grooves 412, and each second clamping strip 426 is respectively clamped in the corresponding first clamping groove 412. The second clamping bars 426 are arranged at intervals along the circumferential direction of the rotating head 420, and second clamping grooves 427 extending along the axial direction of the rotating head 420 are formed between the adjacent second clamping bars 426, obviously, the second clamping grooves 427 and the first clamping bars 411 are correspondingly arranged, and each first clamping bar 411 is respectively clamped in the corresponding second clamping groove 427.

Specifically, the second clamping bar 426 and the second clamping groove 427 are both disposed on the fixed section 422.

Thus, when the housing 410 and the rotating head 420 are assembled, the rotating head 420 can be inserted into the housing 410 along the axial direction, and it should be noted that the first clamping strip 411 and the second clamping strip 426 are clamped with each other, so that the rotation limiting capability of the housing 410 and the rotating head 420 is enhanced, and the first clamping strip 411 and the second clamping strip 426 are circumferentially arranged, so that the rotating force between the housing 410 and the rotating head 420 is dispersed to the circumferential positions of the housing 410, thereby being beneficial to avoiding the damage of the housing 410 caused by stress concentration. At the same time, the operational stability between the housing 410 and the rotator head 420 is also enhanced.

Further, in order to prevent the housing 410 and the rotator 420 from moving axially relative to each other, the housing 410 and the rotator 420 are tightly engaged with each other, so that axial limitation of the housing 410 and the rotator 420 can be achieved by friction force. In addition, by providing the first locking bar 411 and the second locking bar 426, the contact area between the housing 410 and the rotary head 420 is greatly increased, so that the maximum static friction between the housing 410 and the rotary head 420 can be improved, and the housing 410 and the rotary head 420 are prevented from being separated from each other.

It should be noted that, in order to reduce the processing difficulty, in an embodiment, the first clamping strips 411 and the second clamping strips 426 are uniformly distributed along the circumferential direction.

It should be noted that, in order to control the closing rate of the door body, the damping amount of the hydraulic oil in the functional shaft 400 is adjustable, specifically, a valve needle assembly needs to be provided, and the oil return rate of the hydraulic oil is controlled by adjusting the depth of the valve needle assembly inserted into the hydraulic shaft 440, so as to control the closing rate of the door body. In this manner, the overall movement of the needle assembly in the axial direction may be achieved by controlling the knob external to the needle assembly, thereby controlling the depth of insertion of the needle assembly into the hydraulic shaft 440. However, since the distance between the external knob and the hydraulic shaft 440 is long, the length of the needle assembly is long, and in order to realize the overall movement of the needle assembly in the functional shaft 400, a large moving space needs to be reserved in the functional shaft 400, which significantly increases the volume of the functional shaft 400 and the hinge device, and is not beneficial to the miniaturization of the hinge device.

Referring to fig. 5-9, in order to solve the problem that the volume of the functional shaft 400 and the hinge device is significantly increased due to the large required moving space of the valve needle assembly, the functional shaft 400 provided by the present application further includes a valve needle structure 460, and the hydraulic shaft 440 is provided with a hydraulic hole 443 corresponding to the valve needle structure 460, and the backflow rate of hydraulic oil in the hydraulic hole 443 can be adjusted by controlling the depth of the valve needle structure 460 inserted into the hydraulic hole 443.

Further, the needle structure 460 includes a first drive rod 461, a second drive rod 462, a first bevel gear 463, a second bevel gear 464, and a telescoping needle body 465. The first bevel gear 463 is fixedly sleeved on the outer peripheral side of the first driving rod 461, the rack extending direction of the first bevel gear 463 and the axial direction of the first driving rod 461 are obliquely arranged, the second bevel gear 464 is fixedly sleeved on the outer peripheral side of the second driving rod 462, and the rack extending direction of the second bevel gear 464 and the axial direction of the second driving rod 462 are obliquely arranged. The first driving lever 461 is disposed so as to intersect the second driving lever 462, and the first helical gear 463 and the second helical gear 464 are engaged with each other, and the first driving lever 461 can drive the second driving lever 462 to rotate around its own axis (the axis of the second driving lever 462) through the first helical gear 463 and the second helical gear 464 in sequence.

Specifically, when the first driving lever 461 and the second driving lever 462 are vertically disposed, the first bevel gear 463 and the second bevel gear 464 are both 45-degree bevel gears, that is, the first bevel gear 463 and the rack extending direction are obliquely disposed at 45 degrees with respect to the axial direction of the first driving lever 461, and likewise, the second bevel gear 464 and the rack extending direction are obliquely disposed at 45 degrees with respect to the axial direction of the second driving lever 462. Similarly, when the first driving rod 461 and the second driving rod 462 are disposed at other angles, in order to realize the function that the first driving rod 461 can drive the second driving rod 462 to rotate around the self axis through the first bevel gear 463 and the second bevel gear 464 in sequence, the inclination angles of the first bevel gear 463 and the second bevel gear 464 are also adjusted accordingly, which is not shown here.

The second driving rod 462, the telescopic needle 465 and the hydraulic hole 443 are coaxially arranged, the second driving rod 462 and the telescopic needle 465 are movably screw-engaged, and the functional shaft 400 is provided with a limiting portion (not shown), under the action of which the telescopic needle 465 can only move axially along itself, but the telescopic needle 465 cannot rotate axially around itself. That is, the retractable needle 465 can move axially along itself relative to the stopper portion, and the stopper portion can prevent the retractable needle 465 from rotating axially around itself. In combination with the movable threaded engagement of the second driving rod 462 and the retractable needle 465, it can be seen that, when the second driving rod 462 rotates, the rotational force of the second driving rod 462 can be converted into an axial force for driving the retractable needle 465 to move axially along the second driving rod via the movable threaded structure under the action of the limiting portion, so as to adjust the depth of the retractable needle 465 inserted into the hydraulic hole 443.

Specifically, the rotating head 420 is sleeved on the outer sides of the second driving rod 462 and the second bevel gear 464, and the inner wall of the rotating head 420 (but not limited to this, may be an inner wall of another structure in the functional shaft 400, for example, an inner wall of the housing 410, etc., not specifically mentioned herein) is provided with a non-circular hole (a hexagonal hole in this embodiment, but in other embodiments, another non-circular hole), the outer peripheral side of the retractable needle 465 is provided with a non-circular protrusion 4651 (a hexagonal protrusion in this embodiment, but in other embodiments, another non-circular protrusion 4651) corresponding to the non-circular hole, the outer wall of the non-circular protrusion 4651 is attached to the inner wall of the non-circular hole, and the non-circular hole can be used as a limiting portion to limit the rotation of the non-circular protrusion 4651, that is, in the case that the rotating head 420 does not rotate, the retractable needle 465 cannot rotate. In addition, even if the rotary head 420 rotates, the opening of the door does not generally exceed 360 degrees, and therefore, the angle by which the rotary head 420 rotates is smaller than 360 degrees, that is, the rotary head 420 can only drive the telescopic needle 465 to rotate for no more than one turn, and at this time, the influence on the depth of the telescopic needle 465 extending into the hydraulic hole 443 is extremely small and negligible. That is, the rotating head 420 can effectively restrict the rotation of the telescopic needle 465, and the rotating head 420 does not affect the depth of the telescopic needle 465 extending into the hydraulic hole 443.

Since the first driving rod 461 drives the second driving rod 462 to rotate around its own axial direction (axial direction of the second driving rod 462), and the helical gear structure can only rotate circumferentially and cannot move axially, that is, the first driving rod 461 and the second driving rod 462 only rotate circumferentially and cannot move axially, as is known from the structural characteristics of helical gears. Therefore, there is no need to reserve an axial moving space of the first driving lever 461 and the second driving lever 462.

Further, as the second driving rod 462 is movably screwed with the retractable needle 465, and combined with the limiting function of the limiting portion, the second driving rod 462 can drive the retractable needle 465 to move axially. It will be appreciated that when the telescopic needle 465 moves away from the hydraulic hole 443, the telescopic needle 465 can be screwed into the second driving rod 462 (both are in a nested relationship), and at this time, the telescopic needle 465 displaces itself (i.e., the telescopic needle 465) in the axial direction by increasing the axial overlapping length with the second driving rod 462. When the telescopic needle 465 moves in a direction approaching the hydraulic hole 443, the telescopic needle 465 can be further inserted into the hydraulic hole 443, and at this time, the telescopic needle 465 realizes axial displacement of itself (referred to as telescopic needle 465) by increasing the axial overlapping length with the hydraulic hole 443. That is, no matter in which direction the telescoping needle 465 moves, the functional shaft 400 need provide additional active space for the telescoping needle 465. In this way, the internal space of the functional shaft 400 is greatly saved, and in particular, the axial length of the functional shaft 400 is greatly shortened, thereby being beneficial to reducing the volume of the whole hinge device.

Furthermore, compared with the direct engagement of the whole teeth of the common spur gear, larger noise is generated, and the first helical gear 463 and the second helical gear 464 of the present application are engaged step by step, so that the noise generated in the engagement process of the two helical gears can be greatly reduced, that is, the noise in the operation process of the functional shaft 400 and the hinge device can be reduced, and the use experience of the user is enhanced.

In one embodiment, the outer peripheral side of the second driving rod 462 is provided with a first external thread (not shown), and the inner wall of the retractable needle body 465 is provided with a first internal thread (not shown) corresponding to the first external thread, and the retractable needle body 465 is sleeved outside the second driving rod 462.

However, in another embodiment, the inner wall of the second driving rod 462 is provided with a second internal thread, the outer peripheral side of the telescopic needle 465 is provided with a second external thread corresponding to the second internal thread, and the second driving rod 462 is sleeved outside the telescopic needle 465.

In order to enhance the assembly strength of the second bevel gear 464 and the second driving rod 462, in an embodiment, as shown in fig. 5, 6 and 9, the second driving rod 462 is provided with a non-circular rod section 4621, the second bevel gear 464 is provided with a non-circular through hole corresponding to the non-circular rod section 4621, the second bevel gear 464 is sleeved on the non-circular rod section 4621 through the non-circular through hole, and the inner wall of the non-circular through hole is tightly matched with the outer wall of the non-circular rod section 4621.

In this way, the second helical gear 464 and the second driving lever 462 can be prevented from rotating relative to each other.

Also, the above-described method may be used to prevent the relative rotation of the first helical gear 463 and the first driving lever 461.

Specifically, the notch portion 4622 may be cut into the outer wall of the second driving rod 462, and the second driving rod 462 provided with the notch portion 4622 may be formed into a non-circular rod segment 4621.

In this embodiment, the second driving rod 462 is disposed through the inner wall of the rotating head 420, and the outer diameter of the second driving rod 462 is far smaller than the inner diameter of the rotating head 420, in order to prevent the second driving rod 462 from shaking, in one embodiment, a protruding ring 4623 is fixedly sleeved on the outer side of the second driving rod 462, and the protruding ring 4623 is in clearance fit with the inner wall of the rotating head 420.

In order to facilitate screwing the first driving rod 461, in an embodiment, as shown in fig. 5 to 9, a screwing head 4611 is fixedly arranged at one end of the first driving rod 461, and the cross-sectional area of the screwing head 4611 is larger than that of the driving rod.

Further, in order to prevent the first driving rod 461 from swinging, in an embodiment, as shown in fig. 5 to 9, a stopper 4612 is disposed at an end of the first driving rod 461 away from the screwing head 4611, the stopper 4612 is fixedly disposed relative to the housing 410, and the first driving rod 461 is inserted into the stopper 4612 and can rotate relative to the stopper 4612.

It should be noted that the limiting block 4612 is not necessarily fixedly connected to the housing 410, but is fixedly disposed with respect to the housing 410, and in this embodiment, the limiting block 4612 is fixed to the first mounting plate set 100 or the second mounting plate set 200 provided with the functional shaft 400.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.

Claims

1. The utility model provides a functional shaft (400), its characterized in that includes casing (410), rotating head (420), piston cylinder (430), hydraulic shaft (440) and reset spring (450), piston cylinder (430) cover locate the outside of hydraulic shaft (440) and with hydraulic shaft (440) are along self axial slip cooperation, reset spring (450) one end with hydraulic shaft (440) axial spacing cooperation, the other end is connected to piston cylinder (430), rotating head (420) rotationally locate piston cylinder (430) keep away from the one end of reset spring (450) and with hydraulic shaft (440) coaxial arrangement, piston cylinder (430) orientation is equipped with spiral guide face (432) that extends around self axial spiral, rotating head (420) are corresponding spiral guide face (432) set firmly drive head (421), drive head (421) with spiral guide face (432) butt cooperation;

The shell (410) is fixedly sleeved on the outer side of the rotating head (420), and the shell (410) can drive the rotating head (420) to synchronously rotate around the axial direction of the rotating head; when the shell (410) drives the rotating head (420) and the driving head (421) to rotate along a preset direction, the driving head (421) can push the piston cylinder (430) to move towards a direction away from the rotating head (420) through the spiral guide surface (432) and compress the return spring (450), the spiral guide surface (432) is provided with a plurality of positioning clamping grooves (433) distributed at intervals along the extending direction of the spiral guide surface (432), and the driving head (421) can be clamped in the corresponding positioning clamping grooves (433);

When the return spring (450) rebounds and pushes the piston cylinder (430) to move towards a direction approaching the rotating head (420), the spiral guide surface (432) can push the driving head (421) to drive the rotating head (420) and the shell (410) to rotate along a direction opposite to the preset direction.

2. The functional shaft (400) according to claim 1, wherein the positioning slot (433) includes a first slot (4331), a second slot (4332) and a third slot (4333), the first slot (4331), the second slot (4332) and the third slot (4333) are sequentially distributed along a direction from the return spring (450) to the rotating head (420), when the rotating angle of the rotating head (420) is zero, the driving head (421) is clamped in the first slot (4331), when the rotating angle of the rotating head (420) is a first preset angle, the driving head (421) is clamped in the second slot (4332), and when the rotating angle of the rotating head (420) is a second preset angle, the driving head (421) is clamped in the third slot (4333).

3. The functional shaft (400) according to claim 2, characterized in that the spiral guiding surface (432) defined between the first groove (4331) and the second groove (4332) is a first guiding section (4321), and that the extending direction of the first guiding section (4321) is arranged obliquely with respect to the axial direction of the piston cylinder (430).

4. The functional shaft (400) according to claim 2, characterized in that the helical guiding surface (432) defining between the second groove (4332) and the third groove (4333) is a second guiding section (4322), the second guiding section (4322) and the axial direction of the piston cylinder (430) being arranged perpendicularly.

5. The functional shaft (400) according to claim 2, characterized in that the piston cylinder (430) is provided with a stop wall (435), the stop wall (435) being arranged opposite the screw guide surface (432), the stop wall (435) and the screw guide surface (432) enclosing the first groove (4331).

6. The functional shaft (400) according to claim 1, wherein the piston cylinder (430) is provided with a plurality of the screw guide surfaces (432), the plurality of screw guide surfaces (432) are distributed along the circumferential direction of the piston cylinder (430) and are arranged in a rotationally symmetrical manner, and the plurality of driving heads (421) and the plurality of screw guide surfaces (432) are arranged in a one-to-one correspondence.

7. The functional shaft (400) according to claim 1, wherein the rotating head (420) comprises a fixed section (422) and a matching section (423), the rotating head (420) is fixedly connected to the housing (410) through the fixed section (422), the matching section (423) is connected to one end of the fixed section (422) close to the return spring (450), the outer wall of the matching section (423) can be attached to the inner wall of the piston cylinder (430) and is in movable fit with the inner wall of the piston cylinder (430), and one end of the driving head (421) is fixed to the outer wall of the matching section (423), and the other end of the driving head extends outwards along the radial direction of the matching section (423).

8. The functional shaft (400) of claim 1, wherein an inner wall of the housing (410) and an outer wall of the swivel head (420) are snap-fit along the circumference Xiang Guding.

9. The functional shaft (400) according to claim 1, wherein the inner wall of the housing (410) is provided with first clamping strips (411) extending along the axial direction of the housing, a plurality of the first clamping strips (411) are arranged at intervals along the circumferential direction of the housing (410), first clamping grooves (412) are formed between adjacent first clamping strips (411), the outer wall of the rotating head (420) is provided with second clamping strips (426) extending along the axial direction of the housing corresponding to the first clamping grooves (412), and each second clamping strip (426) is respectively clamped in the corresponding first clamping groove (412);

The second clamping strips (426) are arranged at intervals along the circumferential direction of the rotating head (420), second clamping grooves (427) are formed between the adjacent second clamping strips (426), and each first clamping strip (411) is respectively clamped in the corresponding second clamping groove (427).

10. A hinge device, characterized by comprising a first mounting plate set (100), a second mounting plate set (200), a hinge bracket (300) and a functional shaft (400) according to any one of claims 1-9, wherein the first mounting plate set (100) is movably connected to the second mounting plate set (200) through the hinge bracket (300), the functional shaft (400) is mounted to one of the first mounting plate set (100) and the second mounting plate set (200), the hinge bracket (300) is movably connected to the functional shaft (400), and the functional shaft (400) is used for increasing the motion damping of the hinge bracket (300).