Chair armrest connection flatness testing fixture

Abstract

The utility model discloses a chair armrest connection flatness testing fixture, which comprises a seat frame testing platform for placing a seat frame, a supporting part arranged in the middle of the seat frame testing platform, a bearing area formed above the supporting part, a testing mechanism arranged on two sides of the bearing area of the seat frame testing platform, and a clamping part and a clamping block movably taken and placed, the clamping part is provided with an opening which is in the horizontal direction and faces the bearing area, and the clamping part is in sliding connection with the seat frame detection table so that the clamping part can be close to or away from the bearing area; during checking, the seat frame is placed in the bearing area above the supporting part, so that the side rods on the two sides of the seat frame are in a suspended state, the clamping block is stacked on the armrest connecting seat, and whether the armrest connecting seat and the clamping block are clamped in the opening together or not is observed when the clamping part is pushed to slide towards the armrest connecting seat, so that whether the armrest connecting seat is flat or not is judged. If the clamping part slides smoothly without resistance, the armrest connecting seat has no problem, and if the clamping part slides difficultly, the seat frame is a defective product, so that the detection mode is simple and efficient.

Description

Technical Field

[0001] The utility model relates to the field of inspection tools, in particular to a connection flatness inspection tool for chair armrests. 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. For example, the gaming chair that is popular among game enthusiasts includes a seat frame, such as Figure 7 As shown in the figure, the outer periphery of the seat frame is an outer tube surrounded by steel pipes, and reinforcing connecting plates are connected between the side rods on both sides of the outer tube. Plate-shaped armrest connecting seats are welded on the side rods on both sides for connecting the armrests, that is, when the seat and the armrests of the chair are connected, the armrest connecting seats serve as the intermediary for connecting the two. Therefore, the flatness of the armrest connecting seats has a great influence on the assembly. Under normal circumstances, when the seat frame is placed flat on the table, the armrest connecting seats are installed on the side rods and are parallel to the horizontal plane. In this way, the armrests can be firmly and vertically connected. If the connecting seat is skewed, for example, there is a problem when welding the armrest connecting seat, the angle between the armrest connecting seat and the horizontal plane after welding is greater than 3°, or there is welding slag during processing, etc., the installed armrests will be The hand can easily become crooked or shaken, which greatly affects the user's product experience. Originally, in the model of assembly before sale, the seat frame with connection problems could be discovered and eliminated during assembly on site. However, in the current sales model, the user can only discover whether there is a problem after receiving the express delivery and installing it. Once a problem occurs, the follow-up processing is very troublesome. It is time-consuming and laborious to install and check the armrests and then disassemble and mail them. The inspection of individual parts can only rely on visual inspection or measurement with a caliper, which is a less accurate method. Moreover, the armrest connecting seat is generally welded to the frame of the seat. The raised frame makes the surface of the armrest connecting seat uneven. The caliper is easily blocked by the frame during measurement. The data measured under interference cannot guarantee that the problem has been eliminated.

[0003] Therefore, we need a testing fixture that can accurately and quickly check whether the connection between the seat frame and the armrest is flat, whether the balance is qualified, whether there are foreign objects such as welding slag, etc., and it should be simple and fast to operate, with high accuracy, and will not be affected by the seat frame, so it 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 armrest connection flatness inspection tool, which can quickly and accurately inspect the connection between the seat frame and the armrest by using the chair armrest connection flatness inspection tool with an inspection mechanism, thereby reducing the inspection time and manpower and improving the accuracy of the inspection.

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

[0006] A chair armrest connection flatness inspection tool, comprising:

[0007] The seat frame inspection platform for placing the seat frame has a support portion in the middle of the seat frame inspection platform, a supporting area is formed above the support portion, and the seat frame inspection platform has inspection mechanisms on both sides of the supporting area, the inspection mechanisms include a clamping portion and a movable clamping block, the clamping portion has a horizontal opening facing the supporting area, the clamping portion is slidably connected to the seat frame inspection platform so that the clamping portion approaches or moves away from the supporting area; during inspection, the seat frame is placed in the supporting area above the support portion, so that the side rods on both sides of the seat frame are suspended, and the clamping blocks are stacked on the armrest connection seat, and the armrest connection seat is judged to be flat by observing whether the opening clamps the armrest connection seat and the clamping block together when the clamping portion is pushed to slide toward the armrest connection seat. If the clamping portion slides smoothly and unobstructed, there is no problem with the armrest connection seat, and if the clamping portion is difficult to slide, it means that the seat frame is a defective product, and the detection method is simple and efficient.

[0008] Preferably, the armrest connection seat is welded to the side rod and does not overlap with the side rod. When the clamping block is placed on the armrest connection seat, the clamping block is beside the side rod, the lower surface of the clamping block is a plane, and the clamping block and the armrest connection seat form a flat rectangular parallelepiped. Even if the armrest connection seat does not overlap with the seat frame, the armrest connection seat is thin and the detection operation alone is not smooth. Therefore, the clamping block is used to increase the thickness, so that the forward pushing operation of the clamping part is smoother.

[0009] Preferably, the armrest connection seat is welded below the side rod and overlaps with the side rod, and a relief groove is formed on the lower surface of the clamping block. When the clamping block is placed on the armrest connection seat, the part of the side rod exposed from the armrest connection seat is in the relief groove, so that the clamping block is attached to the upper surface of the armrest connection seat and forms a flat rectangular parallelepiped with the armrest connection seat. When the armrest connection seat and the side rod overlap, the upper part of the armrest connection seat is not a plane, and the clamping part alone cannot be used for measurement. The clamping block and the armrest connection seat are spliced ​​to form a rectangular parallelepiped, so that the upper and lower surfaces are both planes, satisfying the clamping conditions of the clamping part.

[0010] Preferably, the height of the opening is consistent with the thickness of the armrest connection seat and the clamping block, and the armrest connection seat is judged to be flat when the armrest connection seat and the clamping block are clamped together when the opening is pushed forward. When the armrest connection seat is flat, the opening can smoothly clamp the armrest connection seat and the clamping block therein, and if the armrest connection seat is skewed or has foreign matter, the opening will be difficult to push forward.

[0011] Preferably, the inspection mechanism further comprises a sliding seat, the clamping part is connected to the sliding seat, the seat frame inspection platform is provided with a slide rail corresponding to the movement direction of the clamping part, and the sliding seat is slidably connected to the seat frame inspection platform via the slide rail. The sliding seat slidably connects the clamping part to the seat frame inspection platform to provide a force point for pushing forward.

[0012] Preferably, the clamping part includes a connecting part and a clamping head. The clamping head is a U-shaped part. The one-way opening of the U-shaped part is the horizontal opening of the clamping part. The opening faces the armrest connecting seat. A vertical through hole is formed at one end of the connecting part away from the clamping head. A sliding column is provided corresponding to the through hole of the sliding seat. The sliding column is inserted into the through hole so that the connecting part is slidably connected with the sliding seat, so that the connecting part can slide up and down along the sliding column, and the clamping head can adjust its position up and down with the sliding column. Depending on the seat frame, the height of the armrest connecting seat may be different after the seat frame is placed on the seat frame inspection table. The clamping head can be adjusted up and down according to the height of the armrest connecting seat.

[0013] As a preferred embodiment, there are two sliding seats symmetrically arranged on the left and right sides, which are respectively responsible for the armrest connecting seats on the left and right sides, and there is no need to turn the back frame over for measurement.

[0014] Preferably, the support part is four bosses distributed in four corners in the middle of the seat frame inspection platform, and the seat frame also includes a reinforcing connecting plate connected between the side bars on both sides, and the bosses are supported on the bottom of the reinforcing connecting plate, so that the seat frame is suspended when it is set on the seat frame inspection platform. The suspended seat frame is more convenient for inspectors to operate.

[0015] Preferably, a slot is provided on the boss at a position corresponding to the reinforcing connecting plate, and the reinforcing connecting plate is clamped in the slot. The slot fixes the seat frame to prevent errors caused by shaking.

[0016] The principle and beneficial effects of the utility model using the above technical solution are:

[0017] The utility model provides a chair armrest connection flatness inspection tool, which checks the flatness of the connection between the seat frame and the armrest through an inspection mechanism on a seat frame inspection platform, and checks whether the armrest connection seat is flat by relying on the cooperation between a clamping part and a clamping block, and selects defective products therefrom to prevent the problem of tilting or shaking of the armrest after connection.

[0018] Specifically, the seat frame of the chair is placed on a seat frame inspection table, a clamping block is stacked on the armrest connecting seat, and the clamping part is pushed forward so that the opening clamps the armrest connecting seat and the clamping block together therein. When the armrest connecting seat is skewed or has welding slag, the clamping part will be stuck and unable to move forward, indicating that the inspected product is a defective product and needs to be discarded or reworked. Otherwise, it is proved that the product is qualified and can proceed to the next step. The speed and accuracy of product inspection are improved, and users are prevented from finding defects in the connecting plate after receiving the express delivery, which causes the armrest to be loose and shaking or skewed after connection, thereby avoiding troublesome subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the seat frame inspection platform and the seat frame;

[0020] Figure 2 It is the front view of the seat frame inspection platform and the seat frame;

[0021] Figure 3 The schematic diagram of the inspection mechanism when the side bar and the armrest connection seat overlap;

[0022] Figure 4 The schematic diagram of the inspection mechanism when the side bar and the armrest connection seat do not overlap;

[0023] Figure 5 This is a schematic diagram of the clamping block and the handrail connecting seat being normally inserted into the opening;

[0024] Figure 6 Schematic diagram of the opening being stuck when the surface of the armrest connection seat is uneven

[0025] Figure 7 It is a three-dimensional diagram of the seat frame;

[0026] The figures are marked as follows: 1-seat frame inspection table, 2-seat frame, 3-supporting area, 4-clamping block, 5-opening, 6-side rod, 7-armrest connecting seat, 8-avoidance groove, 9-sliding seat, 10-slide rail, 11-connecting part, 12-clamping head, 13-through hole, 14-sliding column, 15-boss, 16-reinforced connecting plate, 17-slot. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] The specific implementation of the utility model is as follows:

[0030] like Figure 1-7 As shown, the utility model provides a chair armrest connection flatness inspection tool, including a seat frame inspection platform 1 for placing a seat frame 2, a support portion is provided in the middle of the seat frame inspection platform 1, a supporting area 3 is formed above the support portion, and the seat frame inspection platform 1 is provided with inspection mechanisms on both sides of the supporting area 3, the inspection mechanism includes a clamping portion and a movable clamping block 4, the clamping portion has an opening 5 in a horizontal direction and facing the supporting area 3, and the clamping portion is slidably connected to the seat frame inspection platform 1 so that the clamping portion is close to or away from the supporting area 3; when inspecting, the seat frame 2 is placed on the support portion. The supporting area 3 above the support part makes the side rods 6 on both sides of the seat frame 2 suspended, and the clamping blocks 4 are stacked on the armrest connecting seat 7. When the clamping part is pushed to slide toward the armrest connecting seat 7, observe whether the opening 5 clamps the armrest connecting seat 7 and the clamping block 4 therein. If the opening 5 clamps the armrest connecting seat 7 and the clamping block 4 therein when the clamping part slides forward, it proves that the armrest connecting seat 7 is flat. If the resistance is large or it is completely stuck when the clamping part is pushed forward, it means that the armrest connecting seat 7 is skewed or bent and needs to be discarded or reworked.

[0031] The above introduces the chair armrest connection flatness inspection fixture. Next, each part is introduced in detail:

[0032] Specifically, if Figure 3-6 As shown, the height of the opening 5 is consistent with the thickness of the armrest connection seat 7 plus the clamping block 4. The armrest connection seat 7 is welded below the side rod 6 and overlaps with the side rod 6. Directly pushing the clamping part forward to observe whether the opening 5 can clamp the armrest connection seat 7 therein cannot determine whether the armrest connection seat 7 is flat. It is necessary to cooperate with the clamping block 4 for detection. An avoidance groove 8 is formed on the lower surface of the clamping block 4. When the clamping block 4 is placed on the armrest connection seat 7, the part of the side rod 6 exposed from the armrest connection seat 7 is in the avoidance groove 8, and the avoidance groove 8 and the side rod 6 exposed from the armrest The connecting seat 7 is partially complementary, so that the clamping block 4 is in contact with the upper surface of the armrest connecting seat 7 and forms a flat rectangular parallelepiped with the armrest connecting seat 7. At this time, the clamping part is pushed forward again to determine whether the armrest connecting seat 7 is flat by observing whether the opening 5 clamps the armrest connecting seat 7 and the clamping block 4 therein. If the armrest connecting seat 7 is not flat or has foreign matter such as welding slag, the armrest connecting seat 7 and the clamping block 4 cannot be assembled into a flat rectangular parallelepiped, and the opening 5 cannot clamp the armrest connecting seat 7 and the clamping block 4 therein.

[0033] Further, if Figure 2-3As shown, the inspection mechanism also includes a sliding seat 9, which is symmetrically arranged on the left and right, respectively responsible for the armrest connecting seats 7 on the left and right sides, so that measurements on both sides can be carried out simultaneously without turning the back frame over for measurement. The clamping part is connected to the sliding seat 9, and the seat frame inspection platform 1 is provided with a slide rail 10 corresponding to the movement direction of the clamping part. The sliding seat 9 is slidably connected to the seat frame inspection platform 1 through the slide rail 10, so that the clamping part can slide back and forth along the direction of the slide rail 10, realizing the forward pushing function of the clamping part. The armrest connecting seat 7 and the clamping block 4 can be clamped together after the opening 5 is pushed forward.

[0034] Going further, Figure 2-3 As shown, the clamping portion includes a connecting portion 11 and a clamping head 12. The clamping head 12 is a U-shaped member. The unidirectional opening 5 of the U-shaped member is the opening 5 in the horizontal direction of the clamping portion. The opening 5 faces the armrest connecting seat 7. A vertical through hole 13 is opened at one end of the connecting portion 11 away from the clamping head 12. A sliding column 14 is provided corresponding to the through hole 13 of the sliding seat 9. The sliding column 14 is inserted into the through hole 13 so that the connecting portion 11 is slidably connected to the sliding seat 9, so that the connecting portion 11 can slide up and down along the sliding column 14, and then the clamping head 12 can be adjusted up and down with the sliding column 14. Depending on the seat frame 2, the height of the armrest connecting seat 7 may also be different after the seat frame 2 is placed on the seat frame inspection platform 1. The clamping head 12 can be adjusted to the position of the armrest connecting seat 7 and then pushed forward to complete the inspection.

[0035] Further, such as Figure 1 As shown, the support portion is four bosses 15 distributed in four corners in the middle of the seat frame inspection platform 1, and the seat frame 2 also includes a reinforcing connecting plate 16 connected between the side rods 6 on both sides. The boss 15 is supported on the bottom of the reinforcing connecting plate 16, and a slot 17 is also provided on the boss 15 at a position corresponding to the reinforcing connecting plate 16. The slot 17 clamps the reinforcing connecting plate 16 therein, so that the seat frame 2 is firmly fixed on the seat frame inspection platform 1, reducing the error caused by shaking, and the setting of the boss 15 allows the seat frame 2 to be suspended when set on the seat frame inspection platform 1, which is more convenient for the inspector to perform the inspection operation.

[0036] Embodiment 2: This embodiment differs from Embodiment 1 in that Figure 4As shown, the armrest connecting seat 7 is welded on the side rod 6 and does not overlap with the side rod 6. When the clamping block 4 is placed on the armrest connecting seat 7, the clamping block 4 is beside the side rod 6, so the lower surface of the clamping block 4 is a plane, and the clamping block 4 and the armrest connecting seat 7 form a flat rectangular parallelepiped. The clamping block 4 increases the thickness of the armrest connecting seat 7, facilitates the insertion into the opening 5, and assists the detection of the clamping part. When the clamping part is pushed toward the armrest connecting seat 7 to slide, observe whether the opening 5 clamps the armrest connecting seat 7 and the clamping block 4 therein. If the opening 5 clamps the armrest connecting seat 7 and the clamping block 4 therein when the clamping part slides forward, it proves that the armrest connecting seat 7 is flat. If the resistance is large or it is completely stuck when the clamping part is pushed forward, it means that the armrest connecting seat 7 is crooked or bent and needs to be discarded or reworked.

[0037] 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 armrest connection flatness inspection tool, characterized in that include: A seat frame inspection platform (1) for placing a seat frame (2), wherein a support portion is provided in the middle of the seat frame inspection platform (1), a supporting area (3) is formed above the support portion, and the seat frame inspection platform (1) is provided with inspection mechanisms on both sides of the supporting area (3), the inspection mechanisms comprising a clamping portion and a clamping block (4) that can be movably placed, the clamping portion having an opening (5) in a horizontal direction and facing the supporting area (3), the clamping portion being slidably connected to the seat frame inspection platform (1) so that the clamping portion approaches or moves away from the supporting area (3); during inspection, the seat frame (2) is placed on the supporting area (3) above the support portion so that the side rods (6) on both sides of the seat frame (2) are suspended, the clamping block (4) is stacked on the armrest connecting seat (7), and whether the armrest connecting seat (7) is flat is judged by observing whether the opening (5) clamps the armrest connecting seat (7) and the clamping block (4) together when the clamping portion is pushed to slide toward the armrest connecting seat (7).

2. The chair armrest connection flatness inspection tool according to claim 1, characterized in that: The armrest connecting seat (7) is welded to the side rod (6) and does not overlap with the side rod (6); when the clamping block (4) is placed on the armrest connecting seat (7), the clamping block (4) is located beside the side rod (6); the lower surface of the clamping block (4) is a plane; the clamping block (4) and the armrest connecting seat (7) form a flat rectangular parallelepiped.

3. The chair armrest connection flatness inspection tool according to claim 1, characterized in that: The armrest connection seat (7) is welded to the bottom of the side rod (6) and overlaps with the side rod (6); a relief groove (8) is formed on the lower surface of the clamping block (4); when the clamping block (4) is placed on the armrest connection seat (7), the portion of the side rod (6) exposed from the armrest connection seat (7) is located in the relief groove (8), so that the clamping block (4) is attached to the upper surface of the armrest connection seat (7) and forms a flat rectangular parallelepiped with the armrest connection seat (7).

4. The chair armrest connection flatness inspection tool according to claim 1, characterized in that: The height of the opening (5) is consistent with the thickness of the handrail connecting seat (7) plus the clamping block (4). When the opening (5) is pushed forward and the handrail connecting seat (7) and the clamping block (4) are clamped together, the handrail connecting seat (7) is judged to be flat.

5. The chair armrest connection flatness inspection tool according to claim 1, characterized in that: The inspection mechanism further comprises a sliding seat (9), the clamping portion is connected to the sliding seat (9), the seat frame inspection platform (1) is provided with a slide rail (10) corresponding to the movement direction of the clamping portion, and the sliding seat (9) is slidably connected to the seat frame inspection platform (1) via the slide rail (10).

6. The chair armrest connection flatness inspection tool according to claim 5, characterized in that: The clamping portion comprises a connecting portion (11) and a clamping head (12); the clamping head (12) is a U-shaped member; the one-way opening (5) of the U-shaped member is the opening (5) in the horizontal direction of the clamping portion; the opening (5) faces the handrail connecting seat (7); a vertical through hole (13) is formed at one end of the connecting portion (11) away from the clamping head (12); a sliding column (14) is provided on the sliding seat (9) corresponding to the through hole (13); the sliding column (14) is inserted into the through hole (13) so that the connecting portion (11) is slidably connected to the sliding seat (9); the connecting portion (11) can slide up and down along the sliding column (14), and the clamping head (12) can adjust its position up and down along with the sliding column (14).

7. The chair armrest connection flatness inspection tool according to claim 5, characterized in that: The sliding seats (9) are two arranged symmetrically on the left and right.

8. The chair armrest connection flatness inspection tool according to claim 1, characterized in that: The support portion is four bosses (15) distributed at four corners in the middle of the seat frame inspection platform (1). The seat frame (2) also includes a reinforcing connecting plate (16) connected between the side bars (6) on both sides. The bosses (15) are supported on the bottom of the reinforcing connecting plate (16), so that the seat frame (2) is suspended when it is set on the seat frame inspection platform (1).

9. The chair armrest connection flatness inspection tool according to claim 8, characterized in that: A clamping groove (17) is provided on the boss (15) at a position corresponding to the reinforcing connecting plate (16), and the clamping groove (17) clamps the reinforcing connecting plate (16) therein.

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