Electric hinge

Abstract

The invention discloses an electric hinge which comprises a shell, a power unit, a transmission unit, a driving unit, a driving unit and a driving unit. The power unit is provided with a motor and a gear connected to an output shaft of the motor; the execution unit comprises a screw rod which is driven by a motor through a gear to rotate and a sliding block which is assembled at the screw rod in a limiting manner; the connecting unit comprises a sliding block connected to the execution unit and a pull rod which is driven by the sliding block to move in the shell, and an inner support connected with the pull rod; the output unit is connected to the shell and the inner support, and the output unit rotates relative to the shell so as to be switched between a first state and a second state; the gear comprises a driving wheel and a driven wheel which are meshed with each other, the driving wheel is connected with an output shaft of the motor, the driven wheel is connected with the screw rod, and a smooth area is arranged on the driving wheel or the driven wheel, so that the driving wheel and the driven wheel are disengaged from each other. According to the electric hinge, the driving wheel and the driven wheel are switched between the engaged state and the disengaged state, and electric opening and closing and manual opening and closing of the hinge can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hinges, and more specifically to electric hinges. Background Art

[0002] There is one type of hinge. According to different types of objects, the specific structures and types of hinges are different, so the specific structures of hinges are different.

[0003] At present, there are hinges used in small household appliances on the market, mainly used in household appliances such as microwave ovens and ovens, to movably connect and rotate the body and the door. Traditional hinges are generally manually opened. With the continuous development of home appliances and kitchen appliances towards intelligence, electric-opening hinges suitable for small household appliances have emerged.

[0004] The applicant also conforms to the development of the times and researches and develops an electric hinge with stable performance and compact structure in this field. Summary of the Invention

[0005] In view of this, the present invention provides an electric hinge.

[0006] To achieve the above object, the present invention adopts the following technical solutions: The electric hinge includes:

[0007] A housing,

[0008] A power unit having a motor and a gear connected to the output shaft of the motor;

[0009] An execution unit including: a screw rod driven to rotate by the motor through the gear and a slider limitedly assembled at the screw rod;

[0010] A connection unit including: a pull rod connected to the slider of the execution unit and driven to move inside the housing by the slider, and an inner bracket connected to the pull rod;

[0011] An output unit connected to the housing and the inner bracket, and the output unit rotates relative to the housing to switch between a first state and a second state;

[0012] The gear includes: a driving wheel and a driven wheel that mesh with each other. Among them, the driving wheel is connected to the output shaft of the motor, the driven wheel is connected to the screw rod, and a smooth area is provided on the driving wheel or the driven wheel to disengage the driving wheel and the driven wheel.

[0013] As a preferred solution of the present invention, there are meshing and disengaged states between the driving wheel and the driven wheel.

[0014] In the meshing state, the output unit is controlled to rotate electrically to switch between a first state and a second state;

[0015] In the tooth - disengaged state, the output unit is manually controlled to rotate to switch between a first state and a second state.

[0016] As a preferred solution of the present invention, an engagement area is formed on the driving wheel or the driven wheel provided with a smooth area. The engagement area has a starting end and an ending end.

[0017] When the output unit switches from the first state to the second state, the engagement position of the driving wheel and the driven wheel moves from the starting end of the engagement area to the ending end.

[0018] When the output unit switches from the second state to the first state, the engagement position of the driving wheel and the driven wheel moves from the ending end to the starting end of the engagement area.

[0019] As a preferred solution of the present invention, a section of the engagement area and a section of the smooth area are provided on the outer periphery of the driving gear; a circle of teeth is provided on the outer periphery of the driven gear.

[0020] As a preferred solution of the present invention, the execution unit further includes: a support element provided with an installation groove, and the screw rod is rotatably assembled in the installation groove.

[0021] The slider passes through the screw rod and is thread - connected therewith. At the same time, the slider is restricted in the installation groove, and the cooperation between the screw rod and the installation groove enables the slider to linearly reciprocate along the screw rod in the installation groove.

[0022] As a preferred solution of the present invention, the motor is installed on the support element through a motor bracket.

[0023] Rolling bearings are provided at both ends of the screw rod to assist rotation, and the screw rod is limited at the support element through a fixed flange.

[0024] As a preferred solution of the present invention, a pressing position is provided at the upper end of the pull rod, and a part of the slider is restricted in the pressing position, so that the pull rod and the slider move linearly synchronously.

[0025] The pull rod is attached to the inner wall of the housing.

[0026] As a preferred solution of the present invention, the lower end of the pull rod is connected to the inner bracket, and the lower end of the inner bracket is connected to the output unit.

[0027] As a preferred solution of the present invention, it further includes: a tension spring; the upper end of the tension spring is limited on the housing, and the lower end of the tension spring is connected to the pull rod and the inner bracket.

[0028] As can be seen from the above technical solutions, compared with the prior art, the present invention has the following beneficial technical effects: The present invention is an electric hinge that can control the swing head to open and close electrically. Compared with the traditional manual opening and closing hinge, this electric hinge is applied to household appliances such as microwave ovens and ovens, making the products more intelligent and more convenient to use. For example, in the oven structure, when cooking some ingredients and it is necessary to open the door to ventilate after cooking, opening it electrically can automatically open the door according to the program setting after cooking is completed, which is more convenient to use and the food has a better taste. By switching between the meshing state and the disengaged state between the driving wheel and the driven wheel, the electric opening and closing and the manual opening and closing of the hinge can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0030] Figure 1 Structural schematic diagram of the electric hinge of the present invention;

[0031] Figure 2 Exploded view of the electric hinge of the present invention;

[0032] Figure 3 Combined schematic diagram of the power unit and the execution unit of the electric hinge of the present invention;

[0033] Figure 4 Exploded view of the power unit and the execution unit of the electric hinge of the present invention;

[0034] Figure 5 Cross-sectional schematic diagram of the closed state of the electric hinge of the present invention;

[0035] Figure 6 Cross-sectional schematic diagram of the open state of the electric hinge of the present invention.

[0036] Description of the reference numerals:

[0037] Outer shell 100; power unit 200; motor 210; motor output shaft 211; motor bracket 212; gear 220; driving wheel 221; meshing area 2211; smooth area 2212; driven wheel 222; execution unit 300; screw 310; slider 320; support element 330; installation groove 331; connection unit 400; pressed shape 510; pull rod 500; inner bracket 600; output unit 700; tension spring 800. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0039] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0040] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] Electric hinge, please refer to Figures 1-6 As shown, it includes: a housing 100, a power unit 200, an execution unit 300, a connection unit 400, and an output unit 700.

[0042] The housing 100 is made of a metal material, and the output unit 700 is mounted at one end of the housing 100, Figure 1 described in terms of orientation as being mounted at the lower end of the housing 100, and the connection unit 400 is mounted inside the housing 100; while the power unit 200 and the execution unit 300 can be mounted inside the housing 100 or outside the housing 100. As Figure 5 shown, the power unit 200 is mounted on the outer top of the housing 100, and the execution unit 300 is mounted inside the housing 100. As Figure 5 shown, the power unit 200, the execution unit 300, the connection unit 400, and the output unit 700 are connected in sequence from top to bottom.

[0043] The power unit 200 has a motor 210 and a gear 220 connected to the output shaft 211 of the motor;

[0044] The execution unit 300 includes: a screw rod 310 driven to rotate by itself by a motor 210 through a gear 220, and a slider 320 limitedly assembled at the screw rod 310;

[0045] The connection unit 400 includes: a pull rod 500 connected to the slider 320 of the execution unit 300 and driven to move inside the housing 100 by the slider 320, and an inner bracket 600 connected to the pull rod 500;

[0046] The output unit 700 is connected to the housing 100 and the inner bracket 600, and the output unit 700 rotates relative to the housing 100 to switch between a first state and a second state;

[0047] The gear 220 includes: a driving wheel 221 and a driven wheel 222 that are engaged with each other. Among them, the driving wheel 221 is connected to the motor output shaft 211, the driven wheel 222 is connected to the screw rod 310, and a smooth area is provided on the driving wheel 221 or the driven wheel 222 to disengage the driving wheel 221 and the driven wheel 222.

[0048] Furthermore, there are an engaged state and a disengaged state between the driving wheel 221 and the driven wheel 222.

[0049] In the engaged state, the output unit 700 is controlled to rotate electrically to switch between a first state and a second state;

[0050] In the disengaged state, the output unit 700 is controlled to rotate manually to switch between a first state and a second state.

[0051] The first state is a closed state, and the second state is an open state.

[0052] Specifically, as Figures 1-3 shown, during use, the motor 210 rotates forward to drive the driving wheel 221 to rotate. The driving wheel 221 drives the driven wheel 222, and then the screw rod 310 rotates. The slider 320 moves downward along the screw rod 310 and then pushes the pull rod 500 and the inner bracket 600 downward, pushing the output unit 700 to open. When applied to small household appliances, it controls the machine door to open; while the motor 210 rotates backward to drive the driving wheel 221 to rotate. The driving wheel 221 drives the driven wheel 222 to rotate, and then the screw rod 310 rotates. The slider 320 moves upward along the screw rod 310 and then pushes the pull rod 500 and the inner bracket 600 upward, pulling the output unit 700 to close. When applied to small household appliances, it controls the machine door to close.

[0053] In this way, the output unit 700 is controlled to close electrically.

[0054] Generally, self-locking motors are used in electric hinges because self-locking motors are inexpensive, which reduces the product cost. At the same time, self-locking motors have low requirements for circuits. If the driving wheel 221 and the driven wheel 222 are in full-tooth end engagement, then the electric hinge can only achieve electric opening and closing, but cannot achieve manual opening and closing.

[0055] In order to enable the electric hinge to achieve both electric and manual functions, an engagement area is formed on the driving wheel 221 or the driven wheel 222 provided with a smooth area. The engagement area has a starting end and an ending end. When the output unit 700 switches from the first state to the second state, the engagement position of the driving wheel 221 and the driven wheel 222 moves from the starting end of the engagement area to the ending end. When the output unit 700 switches from the second state to the first state, the engagement position of the driving wheel 221 and the driven wheel 222 moves from the ending end of the engagement area to the starting end.

[0056] Specifically, a section of the engagement area 2211 and a section of the smooth area 2212 are provided on the outer periphery of the driving gear 221. A ring of teeth is provided on the outer periphery of the driven gear 222.

[0057] Electric usage mode:

[0058] As Figure 5 shown, when the electric mode switches the output unit 700 from the first state to the second state, the motor 210 drives the driving wheel 221 to rotate forward, thereby driving the driven wheel 222 to rotate backward, the screw 310 rotates backward, and the slider 320 moves downward along the screw 310, thereby pushing the pull rod 500 and the inner bracket 600 downward, pushing the output unit 700 to open. After opening, as Figure 6 shown, at this time, the slider 320 has moved to the lower end of the screw 310, and the engagement position of the driving wheel 221 and the driven wheel 222 moves from the starting end of the engagement area 2211 to the ending end, completing the opening. The motor 210 continues to drive the driving wheel 221 to rotate forward, and the driving wheel 221 and the driven wheel 222 are in a tooth-disengaged state, that is, the driven wheel 222 corresponds to the smooth area 2212 of the driving wheel 221. At this time, the screw 310 will not continue to rotate backward, and the motor 210 drives the driving wheel 221 to rotate forward until the starting end of the engagement area 2211 of the driving wheel 221 re-engages with the driven wheel 222 and then stops.

[0059] As Figure 6 shown, when the electric mode switches the output unit 700 from the second state to the first state, the motor 210 drives the driving wheel 221 to rotate backward, thereby driving the driven wheel 222 to rotate forward, the screw 310 rotates forward, and the slider 320 moves upward along the screw 310, thereby pushing the pull rod 500 and the inner bracket 600 upward, pushing the output unit 700 to close. After opening, it returns to Figure 6As shown, at this time, the slider 320 has moved to the upper end of the screw 310, and the meshing position of the driving wheel 221 and the driven wheel 222 has moved from the end of the meshing area to the beginning, completing the closing; the motor 210 continues to drive the driving wheel 221 to rotate in the reverse direction, and the driving wheel 221 and the driven wheel 222 are in a tooth disengaged state, that is, the driven wheel 222 corresponds to the smooth area 2212 of the driving wheel 221, and at this time, the screw 310 will not continue to rotate forward. The motor 210 drives the driving wheel 221 to rotate forward until it stops when the end of the meshing area 2211 of the driving wheel 221 meshes with the driven wheel 222 again.

[0060] Manual operation mode:

[0061] When manually switching the output unit 700 from the first state to the second state, manually rotate the output unit 700 clockwise, as Figure 5 shown. Since it is a self-locking motor, Figure 5 it is impossible to manually control the output unit 700 to switch from the first state to the second state at this time. However, as described above when the output unit 700 is switched from the second state to the first state by the electric method, after the output unit 700 is closed, the motor 210 drives the driving wheel 221 to rotate forward until it stops when the end of the meshing area 2211 of the driving wheel 221 meshes with the driven wheel 222 again; then, when the output unit 700 is manually turned on at this time, the driven gear 222 does not mesh with the driving wheel 221 when it rotates, corresponding to the smooth area 2212 of the driving wheel 221, so manual opening can be completed.

[0062] When manually switching the output unit 700 from the second state to the first state, manually rotate the output unit 700 counterclockwise, as Figure 6 shown. Since it is a self-locking motor, Figure 6 it is impossible to manually control the output unit 700 to switch from the first state to the second state at this time. However, as described above when the output unit 700 is switched from the first state to the second state by the electric method, after the output unit 700 is opened, the motor 210 drives the driving wheel 221 to rotate forward until it stops when the beginning of the meshing area 2211 of the driving wheel 221 meshes with the driven wheel 222 again; then, when the output unit 700 is manually closed at this time, the driven gear 222 does not mesh with the driving wheel 221 when it rotates, corresponding to the smooth area 2212 of the driving wheel 221, so manual closing can be completed.

[0063] Through the above, opening and closing can be achieved by electric and manual methods.

[0064] Similarly, if the motor 210 is a non-self-locking motor, it is possible to more simply achieve opening and closing by electric and manual methods.

[0065] In one embodiment, the execution unit 300 further includes: a support element 330, the support element 330 is provided with a mounting groove 331, and the screw 310 is rotatably assembled in the mounting groove 331;

[0066] Further, the slider 320 passes through the screw 310 and is threadedly connected therebetween. At the same time, the slider 320 is restricted within the mounting groove 331. The screw 310 and the mounting groove 331 cooperate to enable the slider 320 to linearly reciprocate along the screw 310 within the mounting groove 331.

[0067] Further, the motor 210 is mounted on the support element 330 through a motor bracket 212; both ends of the screw 310 are provided with rolling bearings to assist rotation, and the screw 310 is limited at the support element 330 through a fixed flange. The rolling bearings make the rotation of the screw 310 smoother.

[0068] In one embodiment, a pressing position 510 is provided at the upper end of the pull rod 500, and a part of the slider 320 is restricted in the pressing position 510, so that the pull rod 500 and the slider 320 move linearly synchronously; the pull rod 500 is attached to the inner wall of the housing 100, and the movement of the pull rod 500 is more stable.

[0069] The lower end of the pull rod 500 is connected to the inner bracket 600, and the lower end of the inner bracket 600 is connected to the output unit 700. A tension spring 800 is further provided in the housing 100; the upper end of the tension spring 800 is limited at the housing 100, and the lower end of the tension spring 800 is connected to the pull rod 500 and the inner bracket 600; the tension spring 800 plays a good load-bearing role and counteracts the load acting on the output unit 700.

[0070] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Electric hinge, characterized in that: Comprising: A housing (100), A power unit (200), having a motor (210) and a gear (220) connected to the output shaft (211) of the motor; An execution unit (300), comprising: a screw rod (310) driven to rotate by the motor (210) through the gear (220) and a slider (320) limitedly assembled at the screw rod (310); A connection unit (400), comprising: a pull rod (500) connected to the slider (320) of the execution unit (300) and driven to move inside the housing (100) by the slider (320), and an inner bracket (600) connected to the pull rod (500); An output unit (700), connected to the housing (100) and the inner bracket (600), and the output unit (700) rotates relative to the housing (100) to switch between a first state and a second state; The gear (220) comprises: a driving wheel (221) and a driven wheel (222) engaged with each other, wherein the driving wheel (221) is connected to the output shaft (211) of the motor, the driven wheel (222) is connected to the screw rod (310), and a smooth area is provided on the driving wheel (221) or the driven wheel (222) to disengage the driving wheel (221) and the driven wheel (222).

2. The electric hinge according to claim 1, characterized in that: There are an engaged state and a disengaged state between the driving wheel (221) and the driven wheel (222), In the engaged state, the output unit (700) is controlled to rotate electrically to switch between a first state and a second state; In the disengaged state, the output unit (700) is controlled to rotate manually to switch between a first state and a second state.

3. The electric hinge according to claim 2, wherein: A section of engaged area is formed on the driving wheel (221) or the driven wheel (222) provided with the smooth area, and the engaged area has a starting end and an ending end; When the output unit (700) switches from the first state to the second state, the engaged position of the driving wheel (221) and the driven wheel (222) moves from the starting end of the engaged area to the ending end; When the output unit (700) switches from the second state to the first state, the engaged position of the driving wheel (221) and the driven wheel (222) moves from the ending end of the engaged area to the starting end.

4. The electric hinge according to claim 3, wherein: A section of engaged area (2211) and a section of smooth area (2212) are provided on the outer periphery of the driving gear (221); a circle of teeth is provided on the outer periphery of the driven gear (222).

5. The electric hinge according to any one of claims 1-4, characterized in that: The execution unit (300) further comprises: a support element (330), the support element (330) is provided with a mounting groove (331), and the screw rod (310) is rotatably assembled in the mounting groove (331); The slider (320) passes through the screw rod (310) and is threadedly connected therewith, and at the same time, the slider (320) is restricted in the mounting groove (331), and the screw rod (310) and the mounting groove (331) cooperate to enable the slider (320) to linearly reciprocate along the screw rod (310) in the mounting groove (331).

6. The electric hinge according to claim 5, wherein: The motor (210) is mounted on the support element (330) through a motor bracket (212); Rolling bearings are provided at both ends of the screw rod (310) to assist rotation, and the screw rod (310) is limited at the support element (330) through a fixed flange.

7. The electric hinge according to claim 1, wherein: A pressing position (510) is provided at the upper end of the pull rod (500), and a part of the slider (320) is restricted in the pressing position (510) so that the pull rod (500) and the slider (320) move linearly synchronously; The pull rod (500) is attached to the inner wall of the housing (100).

8. The electric hinge according to claim 7, wherein: The lower end of the pull rod (500) is connected to the inner support (600), and the lower end of the inner support (600) is connected to the output unit (700).

9. The electric hinge according to claim 8, wherein: Further included are: A tension spring (800); the upper end of the tension spring (800) is limited at the housing (100), and the lower end of the tension spring (800) is connected to the pull rod (500) and the inner support (600).

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