CN210760011U

CN210760011U - Device for stretching canvas for picture frame

Info

Publication number: CN210760011U
Application number: CN201921301388.3U
Authority: CN
Inventors: 漆云辉; 刘金童; 王俊豪
Original assignee: Allio Robot Technology Changshu Co ltd
Current assignee: Allio Robot Technology Changshu Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-16
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a device for canvas is tightened to frame, including installation department, clamping part and taut portion, taut portion one end articulates in the installation department, and the clamping part articulates in taut portion one side middle part, pushes the clamping part to the installation department edge when taut portion turns to the clamping part, and inside the taut portion reverse rotation was pulled the clamping part to the installation department, taut portion formed the dead point structure in the installation department simultaneously, and the canvas reaction force that tightens can't reset the taut portion. This device can directly tighten the canvas on the frame to change finished product preparation and transportation mode, dismantlement formula frame strip and canvas have reduced the volume greatly, can reduce the cost of transportation by a wide margin, and the user can assemble by oneself and use, and the picture is changed at any time to the convenience simultaneously.

Description

Device for stretching canvas for picture frame

Technical Field

The utility model relates to a canvas tightens technical field, concretely relates to a device that is used for frame to tighten canvas.

Background

The present social decorative picture is widely used as a high-grade home indoor or outdoor ornament, and the stretched frame picture is a frameless picture, and is widely used due to simple process, convenient assembly, low cost, thick thickness and good decorative three-dimensional effect. However, the disadvantages are that the details are rough and the added value is not high, so people adopt a mode of combining an inner frame and an outer frame, wherein the inner frame is used for tightening canvas, and the outer frame is used for decorating.

For the picture frame, the traditional manufacturing process is to manufacture the frameless picture of the inner frame, manufacture a fixed rectangular frame by using a plurality of frame strips, then directly stretch the printed soft printing picture material on the rectangular frame made of various materials like canvas, fix the soft printing picture material on the frame by adding metal nails and the like after the soft printing picture material is backed, and then clamp the frameless picture in the outer frame. The picture frame has the defects that the assembly of the stretched frame can be completed only by skilled personnel and specialized tools, and the stretched frame cannot be disassembled and assembled again; in addition, the large-size stretched frame has large packaging volume and is not easy to transport, carry, sell and display.

The same problem also relates to various fields needing cloth stretching, such as lamp box advertisement, drawing, embroidery and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a need not the inside casing and can tighten the canvas at the device that is used for the frame of frame to tighten the canvas of frame, avoid the user to purchase the decorative painting finished product only, make preparation and transportation jumbo size frame become simple, conveniently change the picture at any time simultaneously.

In order to solve the technical problem, the utility model provides a device for canvas is tightened to frame, including installation department, clamping part and taut portion, taut portion one end articulate in the installation department, the clamping part articulate in taut portion one side middle part, taut portion will when turning to the clamping part is pushed to the installation department edge, will in the time of taut portion antiport the clamping part is pulled to inside the installation department, simultaneously the taut portion forms the dead point structure in the installation department.

Further, the clamping part comprises an upper clamping plate and a lower clamping plate, and the upper clamping plate and the lower clamping plate are locked through a first locking mechanism.

Further, first locking mechanism is four-bar linkage, including frame, first link, second link and connecting rod, the punch holder connect in first link, the lower plate with frame fixed connection, when the punch holder laminates with the lower plate the dead point structure is formed with the connecting rod collineation to the second link.

Furthermore, first locking mechanism is the cam structure, including fixed column and cam, the fixed column passes the punch holder with the lower plate is fixed, the cam with the fixed column rotates and is connected.

Furthermore, the opposite surfaces of the upper clamping plate and the lower clamping plate are provided with mutually meshed anti-skidding convex ribs.

Furthermore, the tensioning portion comprises a tensioning rod, one end of the tensioning rod is hinged to the mounting portion, and the middle of the tensioning rod is connected with the clamping portion.

Furthermore, the clamping part is hinged with the tensioning rod through a first connecting rod, and the clamping part is clamped in the mounting part in a sliding mode.

Furthermore, a position difference step is arranged in the mounting part, the tensioning rod and the clamping part are arranged on different position difference steps, and when the tensioning rod is pushed to the limit position, the tensioning rod and the first connecting rod are overlapped to form a dead point structure.

Furthermore, one end of the clamping part is hinged with the tensioning rod, and the other end of the clamping part is hinged with the mounting part through a second connecting rod.

Furthermore, a locking plane is arranged in the mounting part, and when the tightening rod is attached to the locking plane, the tightening rod and the clamping part are overlapped to form a dead point structure.

The utility model discloses a device for canvas is tightened to frame, the beneficial effect who compares with prior art is, this device can directly tighten the canvas on the frame, clamping part and tensioning portion carry out respectively and press from both sides tight canvas and carry out the action of tightening to the canvas, and the reaction force that the canvas was tightened can't reset tensioning portion, make the canvas keep the state of tightening, decorative painting finished product preparation and transportation mode have been changed, make it transport with dismantlement formula frame strip and canvas mode, the volume has been reduced greatly, reduce the cost of transportation by a wide margin, the user can assemble by oneself and use, the picture is conveniently changed at any time simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of an operation structure according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 4 is a schematic view of the second embodiment of the present invention;

fig. 5 is a schematic diagram of an application structure of the present invention.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, in order to provide an embodiment one of the device for drawing frame to tighten canvas according to the present invention, the device includes a mounting portion 10, a clamping portion 20 and a tension portion 30, the clamping portion 20 and the tension portion 30 are disposed in the mounting portion 10, the mounting portion 10 can be disposed independently or directly on the back of the canvas, one end of the tension portion 30 is hinged in the mounting portion 10, so the other end of the tension portion 30 can be pushed to rotate around the hinge point, the clamping portion 20 is hinged in the middle of one side of the tension portion 30, when the tension portion 30 is pushed to rotate, the clamping portion 20 can move together with the tension portion 30, specifically, when the tension portion 30 rotates to the clamping portion 20, the clamping portion 20 is pushed to the edge of the mounting portion 10, the canvas is in a loose state, and is conveniently inserted into the clamping portion 20, the clamping portion 20 clamps the canvas, because the canvas is a plane structure, in order to secure the clamping of the canvas, the clamping part 20 comprises an upper clamping plate 21 and a lower clamping plate 22, the canvas is clamped between the upper clamping plate 21 and the lower clamping plate 22, the upper clamping plate 21 and the lower clamping plate 22 are locked by the first locking mechanism 40, in order to increase the friction between the canvas and the upper clamping plate 21 and the lower clamping plate 22 and ensure that the canvas does not fall off after being clamped, the opposite surfaces of the upper clamping plate 21 and the lower clamping plate 22 are provided with mutually meshed anti-skid convex ridges 23, after the canvas is clamped, then the tightening part 30 rotates reversely while pulling the clamping part 20 toward the inside of the mounting part 10, when the periphery of the canvas is driven by the clamping part 20 to move towards the inside of the installation part 10, the periphery of the canvas is tightened, thereby completing the installation of the decorative painting, in order to ensure that the tensioning part 30 is not loosened due to the tension of the canvas after the canvas is tensioned, a first locking mechanism 40 for fixing the tension part 30 is provided in the mounting part 10. Consequently need not to set up the inside casing and can be with canvas direct mount on the frame for the user can purchase the frame strip of suitable size as required and assemble by oneself, and conveniently changes the canvas, practices thrift the cost.

Referring to fig. 1 and 2, for the utility model discloses a structure schematic diagram, in this embodiment, for pressing from both sides tight canvas, first locking mechanism 40 is established to four-bar linkage, including frame 41, first link 42, second link 43 and connecting rod 44, four-bar linkage's characteristic includes the dead point structure, utilizes the characteristics of dead point structure to make splint can not loosen by oneself after pressing from both sides tightly in this embodiment. Specifically, the upper plate 21 is connected to the first connecting frame 42, the lower plate 22 is fixedly connected to the frame 41, and the second connecting frame 43 and the connecting rod 44 are collinear to form a dead point structure when the upper plate 21 and the lower plate 22 are attached to each other. In order to conveniently and manually push the upper clamping plate 21 and the lower clamping plate 22 to be compressed, the length of the connecting rod 44 is greater than the length between connecting points connected with the connecting frames at the two ends, the extending part of the connecting rod 44 facilitates manual operation on the one hand, the connecting rod 44 is inserted into the second connecting frame 43 on the other hand, and after the connecting rod 44 and the second connecting frame 43 form a linear structure, the blocking part is arranged in the second connecting frame 43, so that the connecting rod 44 can be prevented from being continuously pressed downwards to cause the upper clamping plate 21 to be lifted. In this embodiment, can make punch holder 21 and lower plate 22 press from both sides tightly for making connecting rod 44 rotate a little angle after, guarantee simultaneously that punch holder 21 and lower plate 22 can be driven together and remove on the whole, lower plate 22 clamps and locates in installation department 10, the vertical one end of fixing at lower plate 22 of frame 41, first link 42 one end articulates in frame 41 and lower plate 22 junction, when promoting connecting rod 44, first link 42 rotates, it presss from both sides tight lower plate 22 to drive punch holder 21, and connecting rod 44 and second link 43 form the dead point structure. After the canvas is clamped by the upper clamping plate 21 and the lower clamping plate 22, in order to tighten the canvas, the tensioning portion 30 pulls the canvas outwards, the tensioning portion 30 includes a tensioning rod 31, one end of the tensioning rod 31 is hinged to the mounting portion 10, the middle portion of the tensioning rod 31 is connected to the clamping portion 20, when the other end of the tensioning rod 31 is pushed to rotate around the hinged point of the tensioning rod 31, the middle portion of the tensioning rod 31 moves a certain distance, so as to drive the clamping portion 20 to move a certain distance, in this embodiment, the clamping portion 20 is hinged to the tensioning rod 31 through a first connecting rod 32, the clamping portion 20 is slidably clamped in the mounting portion 10, specifically, two ends of the first connecting rod 32 are respectively hinged to the middle portions of the lower clamping plate 22 and the tensioning rod 31, the lower clamping plate 22 is slidably clamped in the mounting portion 10, because the frame 41 is fixedly connected to the lower clamping plate 22, the whole clamping portion 20 can be driven to move by pulling the lower, when the tightening rod 31 is pushed to rotate, the first connecting rod 32 connected with the tightening rod 31 has a certain fluctuation in height along with the rotation of the tightening rod 31, and the lower clamping plate 22 is clamped in the mounting portion 10 to ensure the stability of the position of the clamping portion 20.

After the canvas is tightened, in order to keep the canvas in a tightened state, the tightening rod 31 needs to be locked, in this embodiment, in order to enable the tightening rod 31 to rotate to a stable dead point position, the position difference step 11 is disposed in the mounting portion 10, the tightening rod 31 and the clamping portion 20 are disposed on different position difference steps 11, and when the tightening rod 31 is pushed to an extreme position, the tightening rod 31 and the first connecting rod 32 are overlapped to form a dead point structure. Because the tension rod 31 and the clamping part 20 are positioned on different position difference steps 11, when the tension rod 31 is pushed to the limit position, a certain included angle exists between the tension rod and the plane where the canvas is positioned, the tension force of the canvas enables the tension rod 31 to be attached to the installation part 10, and the locking of the tension rod 31 is guaranteed.

Referring to fig. 3 and 4, which are schematic structural diagrams of an embodiment of the present invention, in this embodiment, the first locking mechanism 40 is a cam structure, presses the upper clamp plate 21 toward the lower clamp plate 22 by the rotation of the cam 46, thereby clamping the canvas, the first locking mechanism 40 comprises a fixing post 45 and a cam 46, the fixing post 45 is fixed through the upper clamping plate 21 and the lower clamping plate 22, the cam 46 is rotatably connected with the fixing column 45, in a non-working state, the small-diameter end of the cam 46 is abutted with the upper clamping plate 21, the upper clamping plate 21 and the lower clamping plate 22 are in an opening state, when it is desired to clamp the canvas, the cam 46 is rotated, causing the larger diameter end of the cam 46 to abut the upper clamping plate 21, accordingly, the upper and

lower clamping plates

21 and 22 clamp the canvas, and at the same time, the cam 46 rotates to the dead point position, and the clamping state of the clamping plates cannot be released when the cam 46 is rotated by non-manual force. In other embodiments of the present invention, the clamping between the upper clamping plate 21 and the lower clamping plate 22 can be performed by fasteners, which is not described herein. After the canvas is clamped by the upper clamping plate 21 and the lower clamping plate 22, in order to tighten the canvas, the tensioning portion 30 pulls the canvas outwards, the tensioning portion 30 includes a tensioning rod 31, one end of the tensioning rod 31 is hinged to the mounting portion 10, the middle portion of the tensioning rod 31 is connected to the clamping portion 20, when the other end of the tensioning rod 31 is pushed to rotate around the hinged point of the tensioning rod 31, the middle portion of the tensioning rod 31 moves a certain distance, so as to drive the clamping portion 20 to move a certain distance, in this embodiment, one end of the clamping portion 20 is directly hinged to the tensioning rod 31, the clamping portion 20 clamps the canvas and then moves a certain distance along with the rotation of the tensioning rod 31, so as to tighten the canvas, because the clamping portion 20 has a certain width, when only one end of the clamping portion 20 is connected to the tensioning rod 31, the other end of the clamping portion 20 is not fixed, and is inconvenient to clamp the canvas, therefore, the other end of the clamping portion 20 is hinged to the mounting portion 10, on the one hand, the second connecting rod 33 supports the clamping portion 20, and on the other hand, the second connecting rod 33, the clamping portion 20 and the tensioning portion 30 form a four-bar structure, and when the clamping portion 20 and the tensioning rod 31 are overlapped, a stable dead point structure can be formed, so that the locking plane 12 is arranged in the mounting portion 10.

Referring to fig. 5, for the utility model discloses use the structure explosion diagram on frame 50, the utility model discloses when using, with clamping part 20 and tensioning portion 30 through the installation department 10 of independent setting or directly set up the installation department 10 at the frame 50 back, install at the frame 50 back, can set up this device of corresponding number according to the size of canvas 60, make each limit of canvas 60 tightened by even centre gripping, consequently, the user need not to purchase the decoration drawing after the equipment is accomplished, only need purchase the frame 50 that has this device, then assemble frame 50 together, utilize this device to tighten canvas 60 clamp back, can accomplish by oneself and decorate the drawing mounting, convenient transportation on the one hand, on the other hand has practiced thrift the cost of inside casing, and can change canvas 60 at any time, and the use value is improved.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a device that is used for frame to tighten canvas, its characterized in that, includes installation department, clamping part and taut portion, taut portion one end articulate in the installation department, the clamping part articulate in taut portion one side middle part, when taut portion turns to the clamping part will the clamping part is pushed to the installation department edge, when taut portion antiport will the clamping part pull to inside the installation department, simultaneously taut portion forms the dead point structure in the installation department.

2. The picture frame canvas tensioning device as claimed in claim 1, wherein the clip means comprises an upper and lower clip plate, the upper and lower clip plates being locked by a first locking mechanism.

3. The device for canvas stretching a picture frame as claimed in claim 2, wherein the first locking mechanism is a four-bar linkage structure including a frame, a first connecting frame, a second connecting frame and a connecting bar, the upper clamping plate is connected to the first connecting frame, the lower clamping plate is fixedly connected to the frame, and the second connecting frame and the connecting bar are collinear to form a dead point structure when the upper clamping plate and the lower clamping plate are attached.

4. The device for canvas stretching a picture frame as claimed in claim 2, wherein the first locking mechanism is a cam structure comprising a fixing post and a cam, the fixing post passes through the upper clamping plate and the lower clamping plate to be fixed, and the cam is rotatably connected with the fixing post.

5. The picture frame canvas tensioning device as claimed in claim 2, in which the opposed faces of the upper and lower clamping plates are provided with interengaging anti-slip ribs.

6. The device for drawing frame canvas as claimed in claim 1, wherein said tension portion includes a tension rod, one end of said tension rod is hinged to said mounting portion, and the middle of said tension rod is connected to said clamping portion.

7. The picture frame canvas tensioning device according to claim 6, wherein the clip portion is pivotally connected to the tension bar by a first connecting bar, the clip portion being slidably captured within the mounting portion.

8. The picture frame canvas tensioning device according to claim 7, wherein a position difference step is provided in the mounting portion, the tension bar and the clip portion are provided on different position difference steps, and the tension bar is pushed to the limit position and overlaps the first connecting bar to form a dead-center structure.

9. The picture frame canvas tensioning device according to claim 6, wherein one end of the clamping portion is hinged to the tensioning bar and the other end of the clamping portion is hinged to the mounting portion by a second connecting bar.

10. The picture frame canvas tensioning device according to claim 9, wherein a locking plane is provided in the mounting portion, and the tension bar is coincident with the clamping portion to form a dead-center structure when engaging the locking plane.