Gauge for flatness of chair frame connecting plate

Abstract

The utility model discloses a chair frame connecting plate flatness testing fixture, which comprises a testing fixture table for placing a chair frame, a support body arranged in the middle of the testing fixture table, a bearing area formed above the support body, at least one testing mechanism arranged on the lateral side of the bearing area of the testing fixture table, and a sliding support seat arranged on the testing fixture table, the detection part is slidably connected to the sliding supporting seat, so that the detection part can linearly move parallel to the connecting plate when the chair frame is placed on the supporting body, the sliding supporting seat is connected with the detection part and the detection tool table, the detection part is provided with an insertion opening for the connecting plate of the chair frame to pass through, and whether the connecting plate can enter the insertion opening or not is observed when the detection part moves. And whether the connecting plate is vertical and flat or not can be judged by judging whether the socket of the detection part smoothly crosses the connecting plate or not. And if the connecting plate is inclined or bent, the detection part with a linear sliding path is clamped and cannot advance, so that the accuracy is high, and the operation is simple and quick.

Description

Technical Field

[0001] The utility model relates to the field of inspection tools, in particular to a flatness inspection tool for a chair frame connecting plate. Background Art

[0002] Nowadays, online shopping is becoming more and more popular. Many people choose to buy chairs online. There are many choices and discounts for online shopping, and you don’t need to go out to choose in person. However, chairs such as gaming chairs, office chairs or ergonomic chairs are very large. If the whole chair is sent, it will take up a lot of space and the shipping cost will be very high. Therefore, in order to reduce costs, the parts are generally sent to the user’s home for assembly. The disassembled parts can save a lot of space after packaging, but this brings new problems, such as Figure 6 Or as shown in Figure 7, the frame of the chair usually includes a seat frame and a back frame. The outer periphery of the frame is an outer tube surrounded by steel pipes, and the side rods on both sides of the outer tube are welded with connecting plates. A recliner is usually provided between the seat frame and the back frame of the chair. The recliner is respectively connected to the connecting plates of the seat frame or the back frame, so that the seat frame and the back frame are rotatably connected through the recliner. Therefore, the balance of the back frame connecting plate and the seat frame connecting plate has a great influence on the assembly. Under normal circumstances, when the chair frame is placed flat on the table, the lower connecting plate should be perpendicular to the horizontal plane and keep itself flat. However, once the vertical state of the connecting plate deviates slightly, for example, the angle between the connecting plate and the plumb plane is greater than 5°, or the connecting plate itself is unevenly bent, it will cause the chair back or seat to be skewed after installation, or the recliner will be stuck and unable to adjust the chair back angle, or even the problem of direct inability to assemble. Originally, in the model of assembling the chair before selling, problems with the connection of the chair frame could be discovered and eliminated during assembly on site. However, in the current sales model, problems can only be discovered after the user receives the express delivery and installs it. Once a problem occurs, subsequent processing is very troublesome. It is time-consuming and laborious to install and check the chair and then disassemble it for shipment. The inspection of individual parts can only rely on visual inspection or measurement with a tape measure, which is a less accurate method and cannot guarantee that the problem will be eliminated.

[0003] Therefore, we need a testing fixture that can accurately and quickly check whether the joints of the chair frame are flat and whether the balance is acceptable. It should be simple and fast to operate, with high accuracy, and can quickly detect subtle problems. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a chair frame connecting plate flatness inspection tool, which can be used to quickly and accurately inspect the connection of the chair frame through the chair frame connecting plate flatness inspection tool with a detection mechanism, thereby reducing the inspection time and manpower and improving the inspection accuracy.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A chair frame connecting plate flatness inspection tool, comprising:

[0007] A check fixture table for placing a chair frame, a support body is provided in the middle of the check fixture table, a support area is formed above the support body, and at least one detection mechanism is provided on the side of the support area of ​​the check fixture table, the detection mechanism includes a detection part and a sliding support seat, the detection part is slidably connected to the sliding support seat, so that when the chair frame is placed on the support body, the detection part can move in a straight line parallel to the connecting plate, the sliding support seat is respectively connected to the detection part and the check fixture table, the detection part has a socket for the chair frame connecting plate to pass through, when the detection part moves, observe whether the connecting plate can enter the socket, and whether the socket of the detection part can smoothly pass over the connecting plate to judge whether the connecting plate is vertical and flat. If the connecting plate is skewed or bent, the detection part with a straight sliding path will be stuck and unable to move forward, with high accuracy and simple and quick operation.

[0008] Preferably, the sliding support seat is provided with a track protruding from its upper surface, and the detection part slides along the track, so that the detection part can slide linearly, and the structure is simple and easy to process.

[0009] Preferably, one end of the detection part is connected to the sliding support seat by rail sliding, and the other end of the detection part is a detection head, which has a socket with a width consistent with the thickness of the connecting plate, and the socket is parallel to the connecting plate and penetrates in the sliding direction of the detection part. The socket ensures that the connecting plate is vertical and flat.

[0010] Preferably, the inspection table is provided with a moving track perpendicular to the track below the sliding support seat, and the sliding support seat is slidably connected to the inspection table through the moving track, so that the detection mechanism can switch between the left and right sides of the chair frame along the moving track. Only one detection mechanism is needed to check the connecting plates on both sides, saving costs.

[0011] Preferably, the detection head comprises a fixing part and a separation part, the fixing part and the separation part are detachably connected, and the insertion port is a gap formed between the fixing part and the separation part. The width of the detection port can be adjusted according to the different thicknesses of the connection plates of different back frames without replacing the detection head.

[0012] Preferably, a retreat groove is provided in the socket, and the width of the retreat groove is wider than the width of the socket, and the retreat groove leaves space for screws and nuts used for connecting the connecting plate.

[0013] Preferably, the support body is four support platforms distributed at four corners in the middle of the inspection table, and the support platforms are used to support the bottom of the chair frame, so that the chair frame is suspended when it is set on the inspection table. The suspended back frame or seat frame is easier to operate and fix.

[0014] Preferably, a position corresponding to the chair frame is provided on the support platform with a limiting groove, in which the side rod is clamped, so as to fix the back frame or the seat frame to prevent errors caused by shaking.

[0015] The principle and beneficial effects of the utility model using the above technical solution are:

[0016] The utility model provides a chair frame connecting plate flatness inspection tool, which checks the flatness of the connecting plate of the chair frame through a detection mechanism on a inspection tool table, thereby preventing bent or uneven products and improving the qualified rate of products being sold.

[0017] Specifically, the frame of the chair is placed on the inspection table, and the connecting plate is inserted into the inspection part, and the inspection part can slide in a straight line relative to the connecting plate. When the connecting plate is skewed or bent, the inspection part with a straight sliding path will be stuck and unable to move forward, and the inspected product will be defective and need to be discarded or reworked, thereby improving the speed and accuracy of product inspection and preventing users from discovering defects in the connecting plate after assembly, which will lead to major problems after the overall connection, thereby avoiding troublesome subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The top view of the back frame inspection fixture and the back frame;

[0019] Figure 2 It is a top view of the seat frame inspection platform and the seat frame;

[0020] Figure 3 It is the front view of the back frame inspection fixture and the back frame;

[0021] Figure 4 It is the front view of the seat frame inspection platform and the seat frame;

[0022] Figure 5 This is the schematic diagram of the testing mechanism;

[0023] Figure 6 It is a three-dimensional picture of the back frame;

[0024] Figure 7 It is a three-dimensional diagram of the seat frame;

[0025] The figures are marked as follows: 1-gauging table, 2-detection part, 3-sliding support seat, 4-side rod, 5-connecting plate, 6-track, 7-detection head, 8-socket, 9-movable track, 10-fixing part, 11-separation part, 12-retreat groove, 13-support table, 14-limiting groove, 15-supporting area, 16-back frame, 17-seat frame, 18-avoidance part, 19-reinforcement connecting rod, 20-nut. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0028] The specific implementation of the utility model is as follows:

[0029] like Figure 1-7 As shown, the utility model provides a chair frame connecting plate flatness inspection tool, including an inspection tool platform 1, which can be used to inspect a back frame 16 and a seat frame 17 at the same time. A support body is provided in the middle of the inspection tool platform 1, and a supporting area 15 is formed above the support body. During inspection, corresponding objects are placed according to the inspection target. For example, when inspecting the back frame 16, the back frame 16 is placed on the supporting area 15 and fixed, and when inspecting the seat frame 17, the seat frame 17 is placed on the supporting area 15 and fixed. The side bars 4 on both sides of the back frame 16 and the seat frame 17 are welded with connecting plates 5, and the connecting plates 5 are used to connect the back frame 16 and the seat frame 17 by adjusting the angle. The device is rotatably connected, and a detection mechanism is provided on the inspection table 1 corresponding to the connecting plate 5. The detection mechanism includes a detection part 2 and a sliding support seat 3. The sliding support seat 3 is arranged on the inspection table 1. The detection part 2 is slidably connected to the sliding support seat 3. When the detection part 2 slides, the connecting plate 5 is inserted into the socket 8, so that the detection part 2 can slide in a straight line parallel to the connecting plate 5. The sliding detection part 2 makes the socket 8 pass over the connecting plate 5. If the detection part 2 slides smoothly without resistance, it means that this connecting plate 5 is vertical and flat. If the detection part 2 is stuck or encounters a large resistance when sliding, it means that this connecting plate 5 is defective and needs to be discarded or reworked.

[0030] The above introduces the flatness inspection fixture for the chair frame connecting plate. Next, each part is introduced in detail:

[0031] Specifically, if Figure 1-2As shown, the sliding support seat 3 is provided with a track 6 protruding from its upper surface, one end of the detection part 2 is slidably connected to the sliding support seat 3 through the track 6, the other end of the detection part 2 is a detection head 7, the detection head 7 has a socket 8 with a width consistent with the thickness of the connecting plate 5, the socket 8 is parallel to the connecting plate 5 and is formed in the sliding direction of the detection part 2. The inspection table 1 is provided with a moving track 9 perpendicular to the track 6 below the sliding support seat 3, and the sliding support seat 3 is slidably connected to the inspection table 1 through the moving track 9. When testing, the sliding support seat 3 is slid along the moving track 9 to the left side of the chair frame On the edge of the connecting plate 5 on either side of the right side, slide the detection part 2 to make the socket 8 pass over the connecting plate 5, slide the detection part 2 back and forth along the track 6 repeatedly to confirm whether the connecting plate 5 is vertical and flat. After the detection is completed, move the sliding support seat 3 along the moving track 9 to the edge of the connecting plate 5 on the other side of the chair frame, and when the seat frame 17 and the back frame 16 are detected separately, because the overall width of the seat frame 17 and the back frame 16 themselves are different, the positions of the connecting plates 5 on both sides are also different. The sliding support seat 3 can be adjusted to move along the moving track 9 to align with the position of the connecting plate 5.

[0032] Further, if Figure 5 As shown, the detection head 7 includes a fixing portion 10 and a separating portion 11, and the fixing portion 10 and the separating portion 11 are fixedly connected by locking screws. The separating portion 11 is recessed toward the lower side of the fixing portion 10 to form an escape portion 18, and the socket 8 is formed in the gap between the escape portion 18 and the separating portion 11, so the width of the socket 8 is determined by the depth of the recess of the escape portion 18. When it is necessary to measure chair frames of different thicknesses, unscrew the screws to remove the currently installed separating portion 11, and then select a suitable separating portion 11 according to the connecting plates 5 of different thicknesses of different chair back frames, and then install the separating portion 11 on the fixing portion 10 by screwing in the screws, and then adjust the width of the socket 8 to adapt it to different models of chair back frames, and a retreat groove 12 is provided in the socket 8, and the width of the retreat groove 12 is wider than the width of the socket 8, and the retreat groove 12 leaves space for the screws and nuts 20 used to connect the connecting plate 5.

[0033] like Figure 1-2 As shown, the support body is four support platforms 13 distributed at four corners in the middle of the inspection table 1, and the support platforms 13 lift up the back frame 16 or the seat frame 17 so that the back frame 16 or the seat frame 17 is suspended when it is set on the inspection table 1, and a limiting groove 14 is provided on the support platform 13, and the limiting groove 14 clamps the side rod 4 of the back frame 16 or the reinforcing connecting rod 19 provided in the middle of the side rods 4 on both sides of the seat frame 17. The back frame 16 and the seat frame 17 are fixed, which is convenient for the inspection personnel to operate and reduces the measurement error caused by shaking.

[0034] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A chair frame connecting plate flatness inspection tool, characterized in that include: A test bench (1) for placing a chair frame, wherein a support body is provided in the middle of the test bench (1), a support area (15) is formed above the support body, and the test bench (1) is provided with at least one detection mechanism on the side of the support area (15), the detection mechanism comprising a detection part (2) and a sliding support seat (3), the detection part (2) being slidably connected to the sliding support seat (3), so that when the chair frame is placed on the support body, the detection part (2) can move linearly parallel to the connecting plate (5), the sliding support seat (3) being connected to the detection part (2) and the test bench (1) respectively, the detection part (2) having a socket (8) for the chair frame connecting plate to pass through, and when the detection part (2) moves, it is observed whether the connecting plate (5) can enter the socket (8), and whether the socket (8) of the detection part (2) can smoothly pass over the connecting plate (5) to judge whether the connecting plate (5) is vertical and flat.

2. A chair frame connecting plate flatness inspection tool according to claim 1, characterized in that: The sliding support seat (3) is provided with a track (6) protruding from its upper surface, and the detection part (2) slides along the track (6).

3. A chair frame connecting plate flatness inspection tool according to claim 2, characterized in that: One end of the detection part (2) is slidably connected to the sliding support seat (3) via a track (6); the other end of the detection part (2) is a detection head (7); the detection head (7) is provided with a socket (8) having a width consistent with the thickness of the connecting plate (5); the socket (8) is parallel to the connecting plate (5) and is connected in the sliding direction of the detection part (2).

4. The flatness inspection tool for the chair frame connecting plate according to claim 2 is characterized by: The inspection table (1) is provided with a movable track (9) perpendicular to the track (6) below the sliding support seat (3); the sliding support seat (3) is slidably connected to the inspection table (1) via the movable track (9), so that the detection mechanism can switch between the left and right sides of the chair frame along the movable track (9).

5. The flatness inspection tool for the chair frame connecting plate according to claim 3 is characterized by: The detection head (7) comprises a fixing portion (10) and a separating portion (11), wherein the fixing portion (10) and the separating portion (11) are detachably connected, and the socket (8) is a gap formed between the fixing portion (10) and the separating portion (11).

6. The flatness inspection tool for the chair frame connecting plate according to claim 3 is characterized by: A retreat groove (12) is provided in the socket (8), and the width of the retreat groove (12) is wider than the width of the socket (8).

7. The flatness inspection tool for the chair frame connecting plate according to claim 1 is characterized by: The support body is four support platforms (13) distributed at four corners in the middle of the inspection platform (1), and the support platforms (13) are used to support the bottom of the chair frame so that the chair frame is suspended when it is set on the inspection platform (1).

8. The flatness inspection tool for the chair frame connecting plate according to claim 7, characterized in that: A limiting groove (14) is provided on the support platform (13) at a position corresponding to the placement of the chair frame, and the limiting groove (14) holds the side rod (4) therein.

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