WO2020029330A1

WO2020029330A1 - Limiting structure and adjustable linear driver for electric furniture using structure

Info

Publication number: WO2020029330A1
Application number: PCT/CN2018/101782
Authority: WO
Inventors: 赵玉树; 宋璟; 孔铭
Original assignee: 深圳市一么么科技有限公司
Priority date: 2018-08-07
Filing date: 2018-08-22
Publication date: 2020-02-13
Also published as: CN108679185A

Abstract

A limiting structure and an adjustable linear driver for electric furniture using the structure. The limiting structure comprises a limiting bar (6) and an adjustment screw rod (10), wherein one end of the adjustment screw rod (10) is a screw rod end (11), and the other end is an adjustment position (12); an accommodation groove (8) is provided at one end of the limiting bar (6); the screw rod end (11) is arranged in the accommodation groove (8); a travel switch installation position (7) is provided on the limiting bar (6); a travel switch installation pin (15) is fixedly arranged on a travel switch (14); the travel switch installation position (7) and the travel switch installation pin (15) are correspondingly arranged; and the travel switch installation pin (15) is installed in the travel switch installation position (7). According to the limiting structure, an adjustable structural design is adopted, so that the position of the travel switch can be simply and conveniently adjusted; the installation error is conveniently and quickly made up; and the present invention is simple to operate and convenient to use.

Description

Limiting structure and adjustable linear driver for electric furniture using the structure

Technical field

The invention discloses an electric furniture fitting, in particular a limiting structure and an adjustable linear driver for electric furniture using the structure.

Background technique

Electric furniture is the new darling of high-end furniture, such as electric sofas, electric beds, etc. Electric furniture can be adjusted by electric means, such as: seat back angle, tilt angle, height, etc., giving convenience and comfort to use It brings great improvement and is loved by people. At present, the adjustment function of electric furniture is realized by electric linear drive. When in use, the electric linear drive drives the screw through the motor to adjust the set parameters of electric furniture. The electric linear drive is equipped with a travel switch. When the set position is reached, the sliding part triggers the travel switch to control the motor to stop rotating.

Most of the electric furniture in the prior art adopts a steel frame or a wooden frame structure, and an electric linear drive is installed on the steel frame or a wooden frame. During the assembly process of the electric furniture, due to its inevitable design errors, it is impossible to follow The theoretical value is used for assembly. The assembled product has more or less deviations. When the electric linear driver is used for adjustment, it will cause problems such as incomplete adjustment or excessive adjustment. When the error is small, it is within the acceptable range and does not affect the use. If the error is large, the electric linear drive needs to be removed and replaced, which takes time and effort.

technical problem

Aiming at the shortcomings of the design and assembly errors of the electric furniture in the prior art mentioned above, and the time-consuming and laborious maintenance and replacement, the present invention provides a limiting structure and an adjustable linear drive for electric furniture using the structure. The adjustable structure design can easily and conveniently adjust the position of the travel switch, thereby making it convenient and quick to compensate for installation errors.

Technical solutions

The technical solution adopted by the present invention to solve its technical problem is: a limiting structure, the limiting structure includes a limiting bar and an adjusting screw, one end of the adjusting screw is a screw end, and the other end is an adjusting position, and one end of the limiting bar is provided with a capacity Place the slot, the end of the screw is set in the receiving slot, a limit switch installation position is provided on the limit bar, a limit switch installation foot is fixed on the limit switch, the limit switch installation position corresponds to the limit switch installation leg, and the limit switch installation The feet are installed on the position of the position switch.

An adjustable linear drive for electric furniture. The linear drive includes a linear drive body, an end cover, and a limiting structure as described above. The linear drive body is internally equipped with an adjustment drive mechanism, and the end cover is fixedly installed at one end of the linear drive body. There is a motor installed on the linear drive body, and the motor drives the adjustment drive mechanism for linear movement. The linear drive body is provided with a limit bar mounting position, the limit bar is inserted in the limit bar installation position, and the first A stroke switch is set in the screw installation position.

The technical solution adopted by the present invention to solve its technical problems further includes:

The side wall of the receiving groove is provided with a clamping position, and the adjusting screw is clamped at the clamping position.

The cross-section of the snap-in position is arc-shaped, and the arc angle is greater than 180 °; or the cross-section of the snap-in position is “concave”, and the top is provided with a snap-in portion that protrudes inward and the width between the two snap-in portions Less than the diameter of the adjusting screw.

The width of the receiving groove is the same as the width of the end of the screw or the width of the receiving groove is greater than the width of the end of the screw.

The adjustment position adopts a "I" -shaped screw hole, a "X" -shaped screw hole, an inner hexagonal screw hole or an outer hexagonal screw hole.

The adjusting driving mechanism includes a screw and a movable block. A screw mounting position is provided in the linear driver, and the screw is mounted in the screw mounting position. A side of the linear driver main body is provided with a strip through groove. The movable block is provided on the screw and the movable block. An internal thread is provided. The movable block is provided with an extension for connecting with electric furniture or a screw hole for connecting with electric furniture. The motor drives the screw to rotate.

The adjusting driving mechanism includes a screw and a driving device. The driving device is disposed inside the linear driver body. The end cover is provided with a circular hole for the driving device to protrude. The driving part of the driving device protrudes from the circular hole and the inside of the driving device. An internal thread connected to the screw is provided. The screw is inserted into the driving device, and the motor drives the screw to rotate.

A second stroke switch is fixedly installed on the end of the linear driver near the motor.

The second limit switch is installed on the auxiliary limit bar, and the auxiliary limit bar is fixedly installed in the linear drive body corresponding to the end of the motor installation.

The adjusting driving mechanism is provided with bumps at positions corresponding to two stroke switches. When the bumps are moved to the position of the stroke switches, the bumps can press the stroke switches to limit the position.

The end cover is provided with a through hole corresponding to the position of the adjusting screw, a threaded tube is fixedly embedded in the through hole, and the adjusting screw is inserted into the threaded tube.

Beneficial effect

The invention adopts an adjustable structural design, which can simply and conveniently adjust the position of the travel switch, thereby making it convenient and quick to compensate for installation errors, simple operation and convenient use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a three-dimensional structure according to an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an exploded state according to a first embodiment of the present invention.

FIG. 3 is a schematic diagram of a three-dimensional structure of Embodiment 2 of the present invention.

FIG. 4 is a schematic structural diagram of an exploded state according to the second embodiment of the present invention.

In the figure, 1-linear actuator body, 2-end cover, 3-bar through slot, 4-screw mounting position, 5-limit bar mounting position, 6-limit bar, 7-stroke switch mounting position, 8- Receiving slot, 9-clamp position, 10-adjustment screw, 11-screw end, 12-adjustment position, 13-threaded tube, 14-first stroke switch, 15-position switch mounting foot, 16-auxiliary limit Bar, 17-decorative cover, 18-drive unit, 19-second travel switch.

Best Mode of the Invention

This embodiment is a preferred embodiment of the present invention, and other principles and basic structures that are the same or similar to this embodiment are all within the protection scope of the present invention.

Please refer to FIG. 1 and FIG. 2 in combination. The limiting structure in the present invention mainly includes a limiting bar 6 and an adjusting screw 10. One end of the adjusting screw 10 is a screw end 11 and the other end is an adjusting position 12. The limiting bar 6 An accommodation groove 8 is provided at one end, and the screw end 11 is disposed in the accommodation groove 8. The adjusting screw 10 can be rotated to push the inner wall of the accommodation groove 8 through the screw end 11, thereby pushing the limit bar 6 to move back and forth. In the embodiment, the width of the receiving groove 8 is the same as the width of the screw tip 11 or the width of the receiving groove 8 is greater than the width of the screw tip 11, so that the screw tip 11 can be placed in the receiving groove 8.

In this embodiment, a clamping slot 9 is provided on a side wall of the receiving groove 8, and the cross section of the clamping slot 9 is arc-shaped, and the arc angle is greater than 180 °, so that the adjusting screw 10 can be snapped at the clamping slot 9. It does not come out, on the one hand, it is convenient to install and remove, on the other hand, it is simple in structure and easy to use. In specific implementation, the snap-in position 9 may also take other forms, such as a “concave” cross-section, a snap-in portion protruding inward at the top, and the width between the two snap-in portions is smaller than the diameter of the adjusting screw 10, and the The adjusting screw 10 is limited at the snap-in position 9. The snap-in position 9 can also adopt other structures, as long as the limit position of the adjusting screw 10 is met at the snap-in position 9 so that it will not come out.

In this embodiment, the adjustment position 12 uses a “I” -shaped screw hole, and the adjustment screw 10 can be conveniently adjusted by a “I” screwdriver. In specific implementation, the adjustment position 12 can also use a “T” -shaped screw hole or Inner hexagon screw holes, outer hexagon screw holes, etc.

In this embodiment, a limit switch 6 is provided with a travel switch installation position 7, a first travel switch 14 is fixedly provided with a travel switch installation foot 15, a travel switch installation foot 15 is installed on the travel switch installation position 7, and a travel switch is installed Bit 7 corresponds to the travel switch mounting foot 15. In this embodiment, a plurality of position switches 7 are provided. In specific implementation, the position switches may be installed at the set positions as required.

The invention also protects an adjustable linear driver for electric furniture using the above-mentioned limiting structure. The linear driver mainly includes a linear driver body 1, an end cover 2 and the above-mentioned limiting structure. The linear driver body 1 is made of a profile, linear The driver body 1 has a hollow structure, which is a screw mounting position 4. The linear driver body 1 is equipped with a screw (the screw has a conventional structure, not shown in the figure). The side of the linear driver body 1 is provided with a strip-shaped groove 3, and the screw is provided on the side. There is a movable block. The movable block is provided with an internal thread. The movable block can be driven to move back and forth by the rotation of the screw. A part of the movable block extends from the strip through groove 3 to the outside of the linear drive body 1 and extends through the movable block. Drive the electric bed or electric sofa for adjustment. The end cover 2 is fixedly installed at the end of one end of the linear drive body 1. A motor is fixedly installed at the other end of the linear drive body 1. Drive screw rotation (In this embodiment, the motor drives the screw to rotate through a worm gear / worm. Other common driving structure), the screw rotation may be driven by a motor. The linear actuator main body 1 is provided with a limiter bar mounting position 5, the limiter bar 6 is inserted into the limiter bar installation position 5, the first stroke switch 14 installed on the limiter bar 6 is installed in the screw installation position 4, and the movable block is A bump (not shown) is installed on the position corresponding to the travel switch. When the bump slides back and forth with the movable block, the bump will compress the first travel switch 14. When the first travel switch 14 is pressed, If it moves to the corresponding position, it will stop moving. In this embodiment, the limit bar 6 is installed in the end of the linear drive body 1 near the end cover 2 and the limit bar installation position 5 in the linear drive body 1 near the motor end is fixed with an auxiliary limit bar 16 to assist the limit A travel switch is also installed on the bar 16, which is the second travel switch 19, so that the limit of the two ends of the movable block can be realized. The limit bar 6 can assist the limit bar 16 to be set separately. When adjusting, you only need to adjust the limit. The position bar 6 is sufficient, and the auxiliary limit bar 16 is fixed relative to the linear actuator body 1. In specific implementation, other structures can also be used to fix the limit switch at the motor end. In this embodiment, a through hole is provided on the end cap 2 corresponding to the position of the adjusting screw 10, and a threaded tube 13 is fixedly embedded in the through hole. It moves back and forth along the threaded tube 13, thereby pushing the limit bar 6 to slide back and forth. In this embodiment, a decorative cover 17 is installed on the end cover 2. The decorative cover 17 is made of a soft material, such as silicone, rubber, etc. The decorative cover 17 corresponds to the position of the through hole of the threaded tube 13 on the end cover 2. When it is not in use, the through hole can be covered by the decorative cover 17 to protect the threaded pipe 13 on the one hand; on the other hand, it can make the whole better and more beautiful.

In this embodiment, an opening is provided in the decorative cover 17, and the opening corresponds to the threaded tube 13, and the adjusting screw 10 can be adjusted directly by an adjusting tool at the opening.

Embodiment 2: Please refer to FIG. 3 and FIG. 4 in combination. In this embodiment, the linear actuator body 1, the end cover 2 and the above-mentioned limiting structure are mainly included. The linear actuator body 1 is made of a profile, and the linear actuator body 1 It has a hollow structure, and the adjustment drive mechanism is inserted into the linear drive body 1. In this embodiment, the adjustment drive mechanism uses a drive device 18 (in this embodiment, the drive device 18 includes a drive support rod and a movable block, and the movable block is provided with The internal thread corresponding to the screw, the driving support rod and the movable block are installed correspondingly) can be adjusted by the driving part (ie, the driving support rod) in the driving device 18 to drive the electric bed or electric sofa, and the driving device 18 corresponds to the first stroke The switch 14 is provided with a trigger bump (not shown in the figure). The end cap 2 is fixedly installed at the end position of one end of the linear drive body 1 and a motor is fixedly installed at the end position of the other end of the linear drive body 1. (Conventional structure, not shown in the figure), the motor is connected with the screw, and the screw can be driven by the motor to rotate. The internal thread is provided in the driving device 18, and the screw Inserted in the driving device 18, the motor drives the screw to rotate, and the screw drives the driving device 18 to perform a telescopic movement, thereby driving the electric bed or electric sofa to adjust. In this embodiment, a round hole is provided on the end cover 2 for the driving device 18 to protrude. The driving part of the driving device 18 extends from the round hole and is connected to the electric bed or the electric sofa to adjust the electric bed or the electric sofa.

The adjusting mechanism and the limiting mechanism in this embodiment are the same as those in the first embodiment, and will not be repeated here.

When the present invention is used, it is installed in electric furniture. If the electric furniture shrinks or unfolds due to installation structural errors during use, the adjusting screw 10 can be rotated by an adjusting tool (such as a screwdriver, etc.). The screw head 11 pushes the side wall of the receiving groove 8 so that the limit bar 6 drives the first travel switch 14 to move forward and backward, so that the final retracted or expanded position of the electric furniture can be adjusted to overcome structural errors and installation errors. If the stroke of the motor end is not contracted or expanded, the installation position of the entire linear driver can be adjusted, and then the final contracted or expanded position of the electric furniture can be adjusted.

Claims

A limiting structure is characterized in that the limiting structure includes a limiting bar and an adjusting screw. One end of the adjusting screw is a screw end and the other end is an adjusting position. One end of the limiting bar is provided with a receiving groove and a screw end. The head is set in the receiving slot, and a limit switch installation position is provided on the limit bar. A limit switch mounting leg is fixed on the limit switch. The limit switch mounting position corresponds to the limit switch mounting leg. The limit switch mounting leg is installed on the limit switch. Installation position.
The limiting structure according to claim 1, characterized in that: the side wall of the receiving groove is provided with a clamping position, and the adjusting screw is clamped at the clamping position.
The limiting structure according to claim 2, characterized in that: the cross-section of the snap-in position is arc-shaped, and the arc angle is greater than 180 °; or the cross-section of the snap-in position is "concave", and the top is provided with a direction The width of the clamping portion protruding from the inside is smaller than the diameter of the adjusting screw.
The limiting structure according to claim 1, wherein the width of the receiving groove is the same as the width of the screw head or the width of the receiving groove is greater than the width of the screw head.
The limiting structure according to claim 1, wherein the adjusting position is a “One” screw hole, a “T” screw hole, an inner hexagon screw hole or an outer hexagon screw hole.
An adjustable linear actuator for electric furniture, characterized in that the linear actuator includes a linear actuator body, an end cover, and the limiting structure according to any one of claims 1 to 5, and the linear actuator body is installed inside There is an adjustment drive mechanism. The end cover is fixedly installed at the end of one end of the linear drive body. A motor is installed on the linear drive body. The motor drives the adjustment drive mechanism to make a linear movement. The linear drive body is provided with a limit bit installation position and a limit bar. Inserted in the limit bar installation position, the first stroke switch installed on the limit bar is set in the screw installation position.
The linear drive according to claim 6, characterized in that: the adjusting drive mechanism comprises a screw and a movable block, a screw mounting position is arranged in the linear driver, the screw is mounted in the screw mounting position, and a strip is provided on the side of the main body of the linear driver. A through slot, the movable block is provided on the screw, the movable block is provided with an internal thread, the movable block is provided with an extension for connecting with the electric furniture or a screw hole for connecting with the electric furniture, and the motor drives the screw Turn.
The linear actuator according to claim 6, characterized in that: the adjusting driving mechanism comprises a screw and a driving device, the driving device is disposed inside the linear driver body, and a round hole is provided on the end cover for the driving device to protrude and drive The driving part of the device protrudes from the circular hole. An internal thread connected with the screw is provided inside the driving device. The screw is inserted into the driving device and the motor drives the screw to rotate.
The linear actuator according to claim 6 or 7 or 8, characterized in that: a second stroke switch is fixedly installed in one end of the linear actuator body near the motor.
The linear drive according to claim 9, wherein the second limit switch is mounted on an auxiliary limit bar, and the auxiliary limit bar is fixedly installed in an end of the linear drive body corresponding to the motor mounting end.
The linear actuator according to claim 6 or 7 or 8, characterized in that: a bump is installed at the position corresponding to two stroke switches on the adjusting driving mechanism, and when the bump is moved to the position of the stroke switch, the bump is The position switch can be held down to limit the position.
The linear actuator according to claim 6 or 7 or 8, wherein the end cap is provided with a through hole corresponding to the position of the adjusting screw, a threaded tube is fixedly embedded in the through hole, and the adjusting screw is inserted in Inside the threaded tube.