Electric push rod device

Abstract

The utility model relates to the technical field of supporting equipment, in particular to an electric push rod device which comprises supporting legs, a lifting assembly, a Hall sensor and a driving motor. One end of the supporting leg is used for supporting, and the other end of the supporting leg is in threaded connection with the lifting assembly. An output shaft of the driving motor is meshed with the lifting assembly. The end, away from the supporting legs, of the lifting assembly is hinged to the product. The Hall sensor is arranged in the driving motor, and the Hall sensor is electrically connected with an external controller so as to control the adjusting height of the lifting assembly. The Hall sensor is installed in the driving motor, the stroke of the lifting assembly can be set through an external controller, starting and stopping of the driving motor can be controlled, stroke control is more accurate, multi-section stroke adjustment can be set, compatibility is higher, and operation is easier and more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to support equipment technical field especially is related to electric push rod device. BACKGROUND

[0002] Electric push rod device is a new type electric actuator, the electric motor in electric push rod device is driven a pair of screw rod nut after gear reduction, the rotation of motor is changed into linear motion, and the push rod action is completed by using the forward and reverse rotation of motor. Electric push rod device has the characteristics of reliable performance, sensitive action, stable operation, same push and pull force, good environmental adaptability etc. With the development of modern society science and technology and the improvement of people's living standard, the application of electric push rod device is no longer limited to the application in industrial field but is more used to life, and is widely used in medical equipment and health care equipment, intelligent building and household facilities, automobile industry etc. The existing push rod is equipped with travel switch, and the push rod is controlled by travel switch contact to control the push rod travel, and the compatibility is poor, and the control precision is low. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the technical defects in the background art, the utility model aims at providing an electric push rod device.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] Electric push rod device, it includes support leg, lifting assembly, hall sensor and drive motor, one end of support leg is used to provide support, the other end of support leg is screw thread connection with lifting assembly, the output shaft of drive motor is engaged connection with lifting assembly, the end away from support leg of lifting assembly is hinged to product, hall sensor is arranged in drive motor, hall sensor is electrically connected with external controller to control the adjusting height of lifting assembly.

[0006] Through the above-mentioned technical scheme, hall sensor is installed in drive motor, the travel of lifting assembly can be set through external controller, the start and stop of drive motor are controlled, travel control is more accurate, multiple travel adjustments can be set, compatibility is higher, and operation is more simple and convenient.

[0007] Further, the support leg is internally hollow. The output shaft of the driving motor is provided with a driving gear. The lifting assembly comprises a driven gear, a push rod and a connecting sleeve. The connecting sleeve is fixed to the other end of the support leg, and the inner side wall of the connecting sleeve is provided with internal threads along the length direction. One end of the push rod penetrates through the connecting sleeve and is threadedly connected, facilitating the up-down movement of the push rod, and the other end of the push rod is fixedly connected with the driven gear. The circumferential side of the driven gear is provided with helical teeth, and the driven gear is meshingly connected with the driving gear, so that the transmission is more stable, and the installation and dismounting are more convenient.

[0008] Further, the driving gear is provided in a columnar structure, the circumferential side of the driving gear is provided with an external gear, and the diameter of the driving gear is smaller than that of the driven gear, so that the structure is compact and space-saving.

[0009] Further, the central axis of the driving gear is vertically arranged with the central axis of the driven gear, so that the structure is more stable.

[0010] Further, the electric push rod device further comprises a lifting leg and a protective cover. The lifting leg is internally hollow and is sleeved on the outer circumferential side of the support leg. The lifting leg can protect the push rod structure and the guiding support. The protective cover is arranged on the other end of the push rod, the circumferential side of the driving gear and the driven gear, and is fixedly and sealingly connected with one end of the lifting leg to form an integral whole, so as to facilitate the common lifting movement of the protective cover and the lifting leg. The protective cover can protect the internal structure and can also fix all parts into an integral whole, so that the structure is more stable, and the installation and dismounting efficiency is high. The output shaft of the driving motor penetrates through the protective cover, and the seat body of the driving motor is fixedly connected to the outer circumferential side of the protective cover, so that the assembly is convenient.

[0011] Further, the outer side wall of the side, away from the support leg, of the protective cover is provided with a lug, and the lug is used for hingedly connecting with an external product, so that the assembly is convenient.

[0012] Further, the upper end of the lifting leg is provided with a plurality of clamping grooves, and the protective cover is provided with clamping blocks at the corresponding positions, and the clamping blocks are clamped in the clamping grooves, so that the structure is simple, the installation and dismounting are more convenient, the protective cover and the lifting leg can be fixed, and the lifting movement of the lifting leg can be driven.

[0013] Further, the lower end of the support leg is provided with a through mounting groove, and the length direction of the mounting groove is perpendicular to the length direction of the support leg, and the mounting groove is used for hingedly connecting with a supporting part, so that the assembly efficiency is improved.

[0014] In summary, the beneficial effects of the present application are:

[0015] The utility model discloses a drive motor is installed in the hall sensor, through the external controller can set the stroke of lifting assembly, control drive motor's start -stop, stroke control is more accurate, still can set multistage stroke adjustment, and the compatibility is higher, and the operation is more simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic diagram of an embodiment of the electric push rod device of the utility model.

[0017] Figure 2 It is the structure schematic diagram of another view of an embodiment of the electric push rod device of the utility model.

[0018] Figure 3 It is the internal structure schematic diagram of an embodiment of the protective cover of the electric push rod device of the utility model.

[0019] Figure 4 It is the structure schematic diagram of the bottom view of an embodiment of the electric push rod device of the utility model.

[0020] Figure 5 It is Figure 4 The A-A section structure schematic diagram in.

[0021] The reference signs in the drawings are explained as follows:

[0022] 1, electric push rod device;2, support leg;21, installation groove;3, lifting assembly;31, driven gear;32, push rod;33, connecting sleeve;4, drive motor;5, driving gear;6, lifting leg;61, clamping groove;7, protective cover;71, lug. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art belong to the scope of protection of the utility model.

[0024] The person skilled in the art should understand that in the disclosure of the utility model, the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the utility model.

[0025] In the description of the utility model, if there is a word such as '' a plurality of '' description, its meaning is one or more, the meaning of multiple is two and above, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the first, second, third is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the relationship between the indicated technical features.

[0026] The following will be described in detail in combination with the accompanying drawings Figures 1-5 , the embodiment of the utility model is further explained.

[0027] Electric push rod device 1, as shown in Figure 1 , Figure 2 , Figure 3 It includes support leg 2, lifting assembly 3, hall sensor and drive motor 4.The one end of support leg 2 is used to provide support, and the other end of support leg 2 is threadedly connected with lifting assembly 3.The output shaft of drive motor 4 is engagedly connected with lifting assembly 3, and the end of lifting assembly 3 away from support leg 2 is hinged to the product.Hall sensor is arranged in drive motor 4, and hall sensor is electrically connected with external controller to control the adjusting height of lifting assembly 3.

[0028] Among them, the hall sensor is installed in the drive motor 4, the travel of the lifting assembly 3 can be set through the external controller, the start and stop of the drive motor 4 are controlled, the travel control is more accurate, multiple travel adjustments can be set, the compatibility is higher, and the operation is more simple and convenient.The hall sensor is not drawn in the figure.

[0029] In some embodiments, please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 The support leg 2 is internally hollow.The output shaft of drive motor 4 is provided with a driving gear 5.Lifting assembly 3 includes a driven gear 31, a push rod 32 and a connecting sleeve 33.The connecting sleeve 33 is fixed to the other end of the support leg 2, and the inner side wall of the connecting sleeve 33 is provided with internal threads along the length direction.The one end of push rod 32 penetrates through the connecting sleeve 33 and is threadedly connected, facilitating the up-down movement of push rod 32, and the other end of push rod 32 is fixedly connected with driven gear 31.The circumference side of driven gear 31 is provided with a helical tooth, and driven gear 31 is engagedly connected with driving gear 5, so that transmission is more stable, and installation and dismounting are more convenient.

[0030] Preferably, the driving gear 5 is provided as a columnar structure, the circumference side of the driving gear 5 is provided with an external gear, the diameter of the driving gear 5 is less than the diameter of the driven gear 31, the structure is compact, and the space is saved.

[0031] Optionally, the central axis of the driving gear 5 is perpendicular to the central axis of the driven gear 31, and the structure is more stable.

[0032] In some embodiments, referring to Figure 2 , Figure 5 The electric push rod device 1 further comprises a lifting leg 6 and a protective cover 7. The lifting leg 6 is hollow inside and is sleeved on the outer circumferential side of the support leg 2. The lifting leg 6 can protect the structure of the push rod 32 and play a guiding and supporting role. The protective cover 7 covers the other end of the push rod 32, the driving gear 5, and the circumferential side of the driven gear 31, and is fixedly and sealingly connected with one end of the lifting leg 6 to form an integral whole, so as to facilitate the lifting movement of the protective cover 7 together with the lifting leg 6. The protective cover 7 can protect the internal structure and also can fix all parts into an integral whole, so that the structure is more stable and the installation and disassembly are more efficient. The output shaft of the driving motor 4 penetrates through the protective cover 7, and the seat body of the driving motor 4 is fixedly connected to the outer circumferential side of the protective cover 7, so that the assembly is convenient.

[0033] The outer side wall of the side of the protective cover 7 away from the support leg 2 is provided with a lug 71 for hinged connection with external products, so that the assembly is convenient.

[0034] Specifically, the protective cover 7 is provided with two parts along the central axis and is fixed by screws to form a sealed frame structure in cooperation with the lifting leg 6

[0035] Specifically, referring to Figure 3 The upper end of the lifting leg 6 is provided with a plurality of clamping grooves 61, and the inner side wall of the protective cover 7 is provided with clamping blocks corresponding to the positions of the clamping grooves 61. The clamping blocks are clamped in the clamping grooves 61. The structure is simple, the installation and disassembly are more convenient, the protective cover and the lifting leg 6 can be fixed, and the lifting movement of the lifting leg 6 can be driven.

[0036] In some embodiments, referring to Figure 1 The lower end of the support leg 2 is provided with a through mounting groove 21, and the length direction of the mounting groove 21 is perpendicular to the length direction of the support leg 2. The mounting groove 21 is used for hinged connection with a supporting part, so that the assembly efficiency is improved.

[0037] Among them, the support leg 2 and the lifting leg 6 are provided with square structures, and the inner side wall of the lifting leg 6 is slidingly arranged on the outer side of the support leg 2, so that the lifting and guiding effects are improved.

[0038] The electric push rod device 1 can be used for sofa, smart bed, office chair back angle adjustment. During use, the push rod 32 is configured by an external controller to configure the push-out length, and the Hall sensor controls the start and stop of the drive motor 4 according to the designed value. The drive motor 4 rotates forward, and the output shaft of the drive motor 4 drives the driving gear 5 and the driven gear 31 to rotate to make the push rod 32 rotate. The driving gear 5 and the driven gear 31 can convert the rotating force of the drive motor 4 into the axial rotating force of the push rod 32. The rotation of the push rod 32 extends under the thread action force of the connecting sleeve 33, and the push rod 32 drives the protective cover 7, the lifting leg 6 and the drive motor 4 to extend along the length direction of the supporting leg 2 to push the product to adjust the position. The drive motor 4 reverses, which can drive the push rod 32, the protective cover 7 and the lifting leg 6 to retract, which is very convenient to use and has high control precision.

[0039] The embodiments of the specific embodiment are the preferred embodiments of the application, not limited to the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. An electric trolley device, characterized in that The utility model provides a kind of electric push rod device, including support leg (2), lifting assembly (3), hall sensor and drive motor (4);The one end of the support leg (2) is used to provide support, the other end of the support leg (2) is threadedly connected with the lifting assembly (3);The output shaft of the drive motor (4) is engaged with the lifting assembly (3), and the end of the lifting assembly (3) away from the support leg (2) is hinged to product;The hall sensor is arranged in the drive motor (4), and the hall sensor is electrically connected with external controller to control the adjusting height of the lifting assembly (3).

2. The motorized push rod device of claim 1, wherein, The inside of the support leg (2) is hollowly arranged;The output shaft of the drive motor (4) is provided with a driving gear (5);The lifting assembly (3) includes a driven gear (31), a push rod (32) and a connecting sleeve (33);The other end of the connecting sleeve (33) is fixed to the support leg (2), and the inner side wall of the connecting sleeve (33) is provided with internal threads along the length direction thereof;One end of the push rod (32) penetrates through the connecting sleeve (33) and is threadedly connected, and the other end of the push rod (32) is fixedly connected with the driven gear (31);The circumferential side of the driven gear (31) is provided with helical teeth, and the driven gear (31) is engaged with the driving gear (5).

3. The motorized push rod device of claim 2, wherein, The driving gear (5) is arranged in a columnar structure, the circumferential side of the driving gear (5) is provided with an external gear, and the diameter of the driving gear (5) is smaller than the diameter of the driven gear (31).

4. The motorized push rod device of claim 3, wherein, The central axis of the driving gear (5) is arranged perpendicularly to the central axis of the driven gear (31).

5. The motorized push rod device of claim 2, wherein, The electric push rod device further includes a lifting leg (6) and a protective cover (7), the inside of the lifting leg (6) is hollowly arranged, and the lifting leg (6) is sleeved on the outer circumferential side of the support leg (2);The protective cover (7) is arranged on the other end of the push rod (32), the circumferential side of the driving gear (5) and the driven gear (31), and is fixedly and sealingly connected with one end of the lifting leg (6) to form an integral whole;The output shaft of the drive motor (4) penetrates through the protective cover (7), and the seat body of the drive motor (4) is fixedly connected to the outer circumferential side of the protective cover (7).

6. The motorized push rod device of claim 5, wherein, The outer side wall of the side, away from the support leg (2), of the protective cover (7) is provided with a lug (71), and the lug (71) is used for hinged connection with an external product.

7. The motorized push rod device of claim 5, wherein, The upper end of the lifting leg (6) is provided with a plurality of clamping grooves (61), and the protective cover (7) is provided with a clamping block at a corresponding position, and the clamping block is clamped in the clamping groove (61).

8. The motorized push rod device of claim 1, wherein, The lower end of the support leg (2) is provided with a through mounting groove (21), and the length direction of the mounting groove (21) is arranged perpendicularly to the length direction of the support leg (2), and the mounting groove (21) is used for hinged connection with a supporting component.

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