Convenient fixing device for picture frame

Abstract

The utility model relates to a convenient fixing device for a picture frame. The device comprises a fixed seat, a cover plate, a lower pull rod, a left clamping rod and a right clamping rod, a bearing piece is arranged at the lower end of the lower pull rod, and a first rack and a second rack are vertically arranged on the left side and the right side of the lower pull rod respectively; a third rack and a fourth rack which are horizontally distributed are arranged on the left clamping rod and the right clamping rod correspondingly, a left gear and a right gear are rotationally matched with the fixing base, the left gear is meshed with the first rack and the third rack at the same time, and the right gear is meshed with the second rack and the fourth rack at the same time. A left clamping piece and a right clamping piece are arranged at the outer end of the left clamping rod and the outer end of the right clamping rod respectively, and a reset spring is further connected between the fixing base and the lower pull rod. According to the utility model, the gravity of the picture frame is converted into clamping force, the picture frame mounting and dismounting efficiency is high, and the extension rods with different lengths are replaced, so that the picture frame mounting and dismounting device has excellent universality and can adapt to picture frames with most sizes.

Description

Technical Field

[0001] This utility model relates to a picture frame fixing device, and more particularly to a convenient picture frame fixing device. Background Technology

[0002] Oil painting frames are typically wooden square frames used to stretch canvas. The canvas is secured to the frame with nails, keeping it taut. This stretched canvas frame is also called a "canvas board" or "canvas frame." When exhibiting oil paintings, the canvas board needs to be fixed to the exhibition booth, which could be a wall or a display stand. Currently, the common method for securing the frame is to use positioning nails on the booth, with hanging clips attached to these nails on the frame, or to use ropes to secure it to the nails. Rope securing is inherently unstable, while hanging clips need to be perfectly aligned with the positioning nails. Hanging clips can usually be pre-fixed to the back of the frame, but positioning nails need to be temporarily fixed, and the spacing between the nails must match the position of the hanging clips on the corresponding frame, requiring considerable time and effort to prepare. After the exhibition, the positioning nails on the booth need to be removed because they may not fit other frame sizes. Summary of the Invention

[0003] This utility model provides a convenient picture frame fixator, which solves the problem of inconvenient fixation of oil painting frames in the prior art.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a convenient picture frame fixer, including a fixed base, a cover plate, a pull rod, a left clamping rod and a right clamping rod. The lower end of the pull rod is provided with a support piece. The pull rod is vertically slidably engaged with the fixed base. The left and right sides of the pull rod are respectively vertically provided with a first rack and a second rack. The left and right clamping rods are both horizontally slidably engaged with the fixed base. The left and right clamping rods are respectively provided with a horizontally distributed third rack and a fourth rack. The fixed base is rotatably engaged with a left gear and a right gear. The left gear meshes with both the first and third racks simultaneously, and the right gear meshes with both the second and fourth racks simultaneously. The outer ends of the left and right clamping rods are respectively provided with left clamping pieces and right clamping pieces. A return spring is also connected between the fixed base and the pull rod. The return spring can drive the pull rod to slide upward.

[0005] The fixing principle of this utility model is as follows: The fixing base can be fixed to the exhibition booth using existing conventional fixing methods such as adhesive or screws. Then, the entire picture frame is placed centrally on the support plate. At this time, the pull rod will be pressed down, and the first and second racks will move synchronously. Under the transmission of the left and right gears, the downward movement of the first and second racks is transformed into the opposite horizontal movement of the third and fourth racks, which drives the left and right clamping rods to move closer to each other until the left and right clamping plates abut against the sides of the picture frame. At this time, the picture frame is clamped and fixed. The greater the mass of the picture frame, the better the clamping effect. Conversely, as long as the picture frame is lifted upward, the change in the clamping effect of the left and right clamping plates on the picture frame disappears instantly, and the picture frame can be easily removed. Since the left and right clamping plates have a certain clamping range, picture frames within the clamping range can be used for fixing. Therefore, this utility model has a certain degree of versatility and is easy to use.

[0006] Furthermore, the lower end of the pull-down rod is extended and connected to a pull-down extension rod, and the support piece is fixed to the lower end of the pull-down extension rod; the outer end of the left clamping rod is extended and connected to a left extension rod, and the left clamping piece is fixed to the outer end of the left extension rod; the outer end of the right clamping rod is extended and connected to a right extension rod, and the right clamping piece is fixed to the outer end of the right extension rod. This utility model provides pull-down extension rods, left extension rods, and right extension rods of various lengths, allowing for the replacement of extension rods of corresponding sizes according to the actual dimensions of the picture frame, further increasing the versatility of this utility model.

[0007] Furthermore, the supporting plate, the left clamping plate, and the right clamping plate are all provided with nail holes, into which positioning nails can be inserted. When the positioning nail passes through the nail hole and is inserted into the wooden frame of the picture frame, the fixing effect between the picture frame and the supporting plate, the left clamping plate, and the right clamping plate is better.

[0008] Therefore, this utility model has the following characteristics compared with the prior art: 1. This utility model utilizes the gravity of the picture frame to convert into clamping force, which has a high efficiency in picture frame installation and disassembly. Furthermore, by replacing the extension rods of different lengths, this utility model can have excellent versatility and can be adapted to most sizes of picture frames. Attached Figure Description

[0009] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Appendix Figure 2 This is an exploded view of this utility model;

[0011] Appendix Figure 3 This is a schematic diagram of the structure of the picture frame placed on this utility model;

[0012] Appendix Figure 4This is an assembly drawing of the fixed base and the pull rod. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] Example 1: See Figure 1 , Figure 2 and Figure 4 A convenient picture frame holder includes a fixing base 10, a cover plate 20, a pull rod 30, a left clamping rod 40, and a right clamping rod 50. The lower end of the pull rod is provided with a support piece 31. The pull rod slides vertically relative to the fixing base. The left and right sides of the pull rod are respectively provided with a first rack 32 and a second rack 33. The left and right clamping rods slide horizontally relative to the fixing base. The left and right clamping rods are respectively provided with a third rack 41 and a fourth rack 51 distributed horizontally. The fixing base is rotatably fitted with a left gear 60 and a right gear 70. The left gear meshes with the first and third racks simultaneously, and the right gear meshes with the second and fourth racks simultaneously. The outer ends of the left and right clamping rods are respectively provided with a left clamping piece 42 and a right clamping piece 52. A return spring 80 is also connected between the fixing base and the pull rod, which can drive the pull rod to slide upward.

[0016] See Figure 3The fixing principle of this embodiment is as follows: the fixing base can be fixed to the exhibition booth using existing conventional fixing methods such as adhesive or screws. Then, the entire frame is placed centrally on the support plate. At this time, the pull rod will be pressed down, and the first and second racks will move synchronously. Under the transmission of the left and right gears, the downward movement of the first and second racks is transformed into the opposite horizontal movement of the third and fourth racks, which drives the left and right clamping rods to move closer to each other until the left and right clamping plates abut against the sides of the frame. At this time, the frame is clamped and fixed. The greater the mass of the frame, the better the clamping effect. Conversely, as long as the frame is lifted upward, the change in the clamping effect of the left and right clamping plates on the frame disappears instantly, and the frame can be easily removed. When this embodiment is in an unloaded state, the return spring can drive the pull rod to slide upward, so that the left clamping piece and the right clamping piece are in the maximum spacing state. Since the left clamping piece and the right clamping piece have a certain clamping range, the picture frame within the clamping range can be used for fixing. Therefore, this embodiment has a certain degree of versatility and is easy to use.

[0017] See Figure 1 The lower end of the pull-down rod is extended and connected to a pull-down extension rod 34, and a support piece is fixed to the lower end of the pull-down extension rod; the outer end of the left clamping rod is extended and connected to a left extension rod 43, and a left clamping piece is fixed to the outer end of the left extension rod; the outer end of the right clamping rod is extended and connected to a right extension rod 53, and a right clamping piece is fixed to the outer end of the right extension rod. This embodiment provides pull-down extension rods, left extension rods, and right extension rods of various lengths, so that extension rods of corresponding sizes can be replaced according to the actual size of the picture frame, further increasing the versatility of this embodiment.

[0018] See Figure 1 and Figure 2 The upper end of the pull-down extension rod is provided with two first clamping plates 35 that are adapted to the shape of the pull-down rod, and the pull-down extension rod and the pull-down rod can be fixedly connected by screws; the inner end of the left extension rod is provided with two second clamping plates 44 that are adapted to the shape of the left clamping rod, and the left extension rod and the left clamping rod can be fixedly connected by screws; the inner end of the right extension rod is provided with two third clamping plates 54 that are adapted to the shape of the right clamping rod, and the right extension rod and the right clamping rod can be fixedly connected by screws.

[0019] See Figure 1 The supporting plate, left clamping plate, and right clamping plate are all equipped with nail holes 90, into which positioning nails can be inserted. When the positioning nail passes through the nail hole and is inserted into the wooden frame of the picture frame, the picture frame is more securely fixed to the supporting plate, left clamping plate, and right clamping plate.

[0020] See Figure 4The pull rod has vertically distributed grooves 36, and the fixed base has an upper positioning block 11 and a lower positioning block 12 protruding. The upper positioning block and the lower positioning block are slidably engaged in the grooves. The reset spring is located between the upper positioning block and the upper end of the groove.

[0021] See Figure 3 The left clamping rod is provided with a positioning groove 45, and the right clamping rod is provided with a protruding key 55 that slides with the positioning groove; the fixed base is provided with two protrusions 13 distributed on the left and right, the height of the protrusions is not less than the thickness of the pull rod, and a baffle 14 is also provided on the protrusions. The two clamping rods are attached to the protrusions and form a sliding limit with the baffle. The inner surface of the cover plate is attached to the two clamping rods.

[0022] See Figure 4 The fixed base is provided with four positioning plates 15, and the positioning plates are provided with positioning holes 16.

[0023] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A convenient picture frame holder, characterized in that: The device includes a fixed base, a cover plate, a pull rod, a left clamping rod, and a right clamping rod. The lower end of the pull rod has a support plate. The pull rod slides vertically relative to the fixed base. A first rack and a second rack are vertically mounted on the left and right sides of the pull rod, respectively. The left and right clamping rods slide horizontally relative to the fixed base. A third rack and a fourth rack are horizontally distributed on the left and right clamping rods, respectively. A left gear and a right gear are rotatably mounted on the fixed base. The left gear meshes with both the first and third racks simultaneously, and the right gear meshes with both the second and fourth racks simultaneously. Left and right clamping plates are located at the outer ends of the left and right clamping rods, respectively. A return spring connects the fixed base and the pull rod, and the return spring can drive the pull rod to slide upwards.

2. The convenient picture frame fastener according to claim 1, characterized in that: The lower end of the pull-down rod is extended and connected to a pull-down extension rod, and the support piece is fixed to the lower end of the pull-down extension rod; the outer end of the left clamping rod is extended and connected to a left extension rod, and the left clamping piece is fixed to the outer end of the left extension rod; the outer end of the right clamping rod is extended and connected to a right extension rod, and the right clamping piece is fixed to the outer end of the right extension rod.

3. The convenient picture frame fastener according to claim 2, characterized in that: The upper end of the pull-down extension rod is provided with two first clamping pieces that are adapted to the shape of the pull-down rod, and the pull-down extension rod and the pull-down rod can be fixedly connected by screws; the inner end of the left extension rod is provided with two second clamping pieces that are adapted to the shape of the left clamping rod, and the left extension rod and the left clamping rod can be fixedly connected by screws; the inner end of the right extension rod is provided with two third clamping pieces that are adapted to the shape of the right clamping rod, and the right extension rod and the right clamping rod can be fixedly connected by screws.

4. The convenient picture frame fastener according to claim 2, characterized in that: The supporting plate, the left clamping plate, and the right clamping plate are all provided with nail holes, into which positioning nails can be inserted.

5. The convenient picture frame fastener according to claim 1, characterized in that: The pull rod has vertically distributed grooves, and the fixed base has an upper positioning block and a lower positioning block protruding from it. The upper positioning block and the lower positioning block are slidably engaged in the grooves. The return spring is located between the upper positioning block and the upper end of the groove.

6. The convenient picture frame fastener according to claim 5, characterized in that: The left clamping rod is provided with a positioning groove, and the right clamping rod is provided with a protruding key that slides with the positioning groove; the fixing base is provided with two protrusions distributed on the left and right, the height of the protrusions is not less than the thickness of the pull-down rod, and a baffle is also provided on the protrusions. The two clamping rods are attached to the protrusions and form a sliding limit with the baffle. The inner surface of the cover plate is attached to the two clamping rods.

7. The convenient picture frame fastener according to claim 1, characterized in that: The fixed base is provided with a plurality of positioning plates, and the positioning plates are provided with positioning holes.

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