A folding chair assembly machine

Abstract

The utility model discloses a folding chair assembling machine relates to folding chair assembly technical field, specifically is a kind of folding chair assembling machine, including shell, it is characterized by: the inside of shell is provided with support slide bar, the outer surface slidingly connected with connecting ring of support slide bar, the outer surface of connecting ring is provided with transmission rack, the outer surface of connecting ring is provided with connecting spring, the end of connecting spring away from connecting ring is set on the inner wall of shell, the inner wall of shell is provided with support axle rod, the outer surface rotatably connected with transmission gear column of support axle rod, transmission gear column and transmission rack are mutually engaged. The folding chair assembling machine, by the cooperation setting of transmission rack, connecting spring, transmission gear column, crown gear, adjusting spring, adjusting sliding block, limit clamping block, control handle, transmission axle rod, screwdriver head, make the folding chair assembling machine have the effect of realizing folding chair quick assembly while reducing electrical equipment use and reducing production cost.

Description

Technical Field

[0001] This utility model relates to the field of folding chair assembly technology, specifically a folding chair assembly machine. Background Technology

[0002] A folding chair is a type of seating that prioritizes portability and stackability. It typically features a steel tubular frame with Oxford cloth or plastic panels as its main structure. Powder coating is often used to enhance rust resistance, and double-layered fabric is employed to improve durability. The design emphasizes portability, storage, and space saving. Some models include additional features such as storage bags and footrests. Folding chairs are suitable for schools, hospitals, outdoor activities, and temporary seating needs. Assembly is usually done using screwdrivers and other assembly tools.

[0003] To ensure installation efficiency, existing folding chair assembly equipment generally uses electric screwdrivers. However, electric screwdrivers are relatively expensive and require frequent charging, which is quite inconvenient. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a folding chair assembly machine, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a folding chair assembly machine, comprising a housing, a support slide rod disposed inside the housing, a connecting ring slidably connected to the outer surface of the support slide rod, a transmission rack disposed on the outer surface of the connecting ring, a connecting spring disposed on the outer surface of the connecting ring, the end of the connecting spring away from the connecting ring disposed on the inner wall of the housing, a support shaft disposed on the inner wall of the housing, a transmission gear column rotatably connected to the outer surface of the support shaft, the transmission gear column meshing with the transmission rack, a transmission shaft rotatably connected inside the housing, two limit discs disposed on the outer surface of the transmission shaft, a crown gear abutting between the two limit discs, the crown gear meshing with the transmission gear column, a connecting groove being formed inside the crown gear, an adjusting spring disposed inside the connecting groove, an adjusting slider disposed at one end of the adjusting spring, a limit block disposed on the outer surface of the transmission shaft, the position of the limit block being adapted to the position of the adjusting slider.

[0008] Optionally, a control ring is provided on the outer surface of the housing, and a control handle is provided on the outer surface of the transmission rack, with the control handle slidably connected inside the housing.

[0009] Optionally, a support ring is provided inside the housing, and the transmission shaft is rotatably connected inside the support ring. The size of the transmission gear column is larger than that of the crown gear.

[0010] Optionally, the limiting block is a right-angled triangle, and the adjusting slider is a right-angled trapezoid, with the inclined surfaces of the limiting block and the adjusting slider abutting each other.

[0011] Optionally, the number of limiting blocks and adjusting sliders is several, evenly distributed inside the transmission shaft and crown gear, with the number of limiting blocks exceeding the number of adjusting blocks.

[0012] Optionally, the lower end of the drive shaft is provided with a connecting sleeve, the inside of which is provided with a rectangular insertion groove, a rubber sleeve is provided inside the rectangular insertion groove, and a screwdriver head is inserted into the inside of the rubber sleeve.

[0013] This utility model provides a folding chair assembly machine, which has the following beneficial effects:

[0014] 1. This folding chair assembly machine, through the coordinated arrangement of a transmission rack, connecting spring, transmission gear column, crown gear, adjusting spring, adjusting slider, limit block, control handle, transmission shaft, and screwdriver head, enables the folding chair assembly machine to achieve the effect of rapid assembly of folding chairs while reducing the use of electrical equipment and lowering production costs.

[0015] 2. This folding chair assembly machine, through the coordinated design of connecting sleeves, insertion slots, rubber sleeves, and screwdriver heads, enables the convenient and quick replacement of different screwdriver heads. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front view of the internal structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This is a schematic diagram of the internal structure of the crown gear of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the connecting sleeve of this utility model;

[0021] Figure 6 This is a front view structural diagram of the present invention.

[0022] In the diagram: 1. Housing; 2. Support slide rod; 3. Connecting ring; 4. Transmission rack; 5. Connecting spring; 6. Transmission gear column; 7. Transmission shaft; 8. Limiting plate; 9. Crown gear; 10. Adjusting spring; 11. Adjusting slider; 12. Limiting block; 13. Control ring; 14. Control handle; 15. Support ring; 16. Connecting sleeve; 17. Rubber sleeve; 18. Screwdriver head. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example

[0025] Please see Figures 1 to 6 This utility model provides a technical solution: a folding chair assembly machine, including a housing 1, a support slide rod 2 inside the housing 1, a connecting ring 3 slidably connected to the outer surface of the support slide rod 2, a transmission rack 4 on the outer surface of the connecting ring 3, a connecting spring 5 on the outer surface of the connecting ring 3, the end of the connecting spring 5 away from the connecting ring 3 being located on the inner wall of the housing 1, a support shaft rod on the inner wall of the housing 1, a transmission gear column 6 rotatably connected to the outer surface of the support shaft rod, the transmission gear column 6 meshing with the transmission rack 4, a transmission shaft rod 7 rotatably connected inside the housing 1, two limit discs 8 on the outer surface of the transmission shaft rod 7, a crown gear 9 abutting between the two limit discs 8, the crown gear 9 meshing with the transmission gear column 6, a connecting groove inside the crown gear 9, an adjusting spring 10 inside the connecting groove, an adjusting slider 11 at one end of the adjusting spring 10, a limit block 12 on the outer surface of the transmission shaft rod 7, the position of the limit block 12 matching the position of the adjusting slider 11.

[0026] Specifically, insert the corresponding screwdriver bit 18 into the rubber sleeve 17 of the connecting sleeve 16, and then align the screwdriver bit 18 with the corresponding screw head and insert it (or the screw head can be directly fixed to the screwdriver bit 18, which is generally magnetic). Hold the control ring 13 and pull the control handle 14 with your fingers, thereby driving the transmission rack 4 to move along the support slide rod 2, stretching the connecting spring 5, driving the transmission gear column 6 to rotate, and then driving the crown gear 9 to rotate. At this time, the right-angle surface of the limit block 12 and the adjusting slider 11 is in contact, thereby driving the transmission shaft rod 7 to rotate synchronously with the crown gear 9, thus causing the screwdriver to rotate. When the head 18 rotates, and the control handle 14 moves to the top, the control handle 14 is released. Under the elastic force of the connecting spring 5, the transmission rack 4 is reset. At this time, as the crown gear 9 rotates in the opposite direction, the inclined surfaces of the limit block 12 and the adjusting slider 11 mesh with each other. As the crown gear 9 rotates, the limit block 12 and the adjusting slider 11 press against each other, thereby causing the adjusting slider 11 to be housed in the connecting groove, pressing the adjusting spring 10 and disengaging from the limit block 12. This does not affect the normal rotation of the crown gear 9. The above steps are repeated until the transmission shaft 7 can no longer rotate. At this time, the screw is completely tightened.

[0027] Please see Figure 1 A control ring 13 is provided on the outer surface of the housing 1, and a control handle 14 is provided on the outer surface of the transmission rack 4. The control handle 14 is slidably connected inside the housing 1.

[0028] Specifically, the control handle 14 is designed to facilitate the movement of the transmission rack 4.

[0029] Please see Figure 2-3 The housing 1 has a support ring 15 inside, and the transmission shaft 7 is rotatably connected inside the support ring 15. The size of the transmission gear column 6 is larger than the size of the crown gear 9.

[0030] Specifically, the large-sized transmission gear column 6 drives the small-sized crown gear 9 to rotate, which can increase the rotational torque of the crown gear 9, thereby increasing the force output to the screwdriver head 18 and improving the stability of bolt fixing.

[0031] Please see Figure 4 The limiting block 12 is a right triangle, and the adjusting slider 11 is a right trapezoid. The inclined surfaces of the limiting block 12 and the adjusting slider 11 abut against each other.

[0032] Specifically, when the right-angled surfaces of the limiting block 12 and the adjusting slider 11 are in contact, they can limit each other; when the inclined surfaces of the limiting block 12 and the adjusting slider 11 are in contact, they can slide relative to each other.

[0033] Please see Figure 4There are several limit blocks 12 and adjusting sliders 11, which are evenly distributed inside the transmission shaft 7 and crown gear 9. The number of limit blocks 12 is greater than the number of adjusting sliders 11.

[0034] Specifically, the arrangement of multiple sets of limit blocks 12 and adjusting sliders 11 can improve the stability of rotation.

[0035] Please see Figure 2 , Figure 5 The lower end of the drive shaft 7 is provided with a connecting sleeve 16. The connecting sleeve 16 has an insertion groove inside, and a rubber sleeve 17 is provided inside the insertion groove. A screwdriver head 18 is inserted into the rubber sleeve 17.

[0036] Specifically, the combination of the connecting sleeve 16, the insertion slot, the rubber sleeve 17, and the screwdriver head 18 allows for convenient and quick replacement of different screwdriver heads 18.

[0037] In use, insert the corresponding screwdriver bit 18 into the rubber sleeve 17 of the connecting sleeve 16, and then align the screwdriver bit 18 with the corresponding screw head and insert it (or the screw head can be directly fixed to the screwdriver bit 18, which is generally magnetic). Hold the control ring 13 and pull the control handle 14 with your fingers, which will drive the transmission rack 4 to move along the support slide rod 2, stretch the connecting spring 5, drive the transmission gear column 6 to rotate, and then drive the crown gear 9 to rotate. At this time, the right-angle surface of the limit block 12 and the adjusting slider 11 is in contact, which will drive the transmission shaft rod 7 to rotate synchronously with the crown gear 9, thereby causing the screwdriver bit 18 to rotate and drive the screw to be fixed, realizing the rapid assembly of the screw. The large-sized transmission gear column 6 drives the small-sized crown gear 9 to rotate, which can increase the rotation torque of the crown gear 9, thereby increasing the force output to the screwdriver bit 18 and improving the stability of the bolt fixing. When the control handle 14 is moved to the top, the screw is loosened. Open the control handle 14. Under the elastic force of the connecting spring 5, the transmission rack 4 is reset. At this time, as the crown gear 9 rotates in the opposite direction, the inclined surfaces of the limit block 12 and the adjusting slider 11 mesh with each other. As the crown gear 9 rotates, the limit block 12 and the adjusting slider 11 press against each other, thereby causing the adjusting slider 11 to be housed in the connecting groove, pressing the adjusting spring 10 and disengaging from the limit block 12. This does not affect the normal rotation of the crown gear 9. Repeat the above steps until the transmission shaft 7 can no longer rotate. At this time, the screw is completely tightened. In this process, the purpose of the electric screwdriver to be able to twist in size is achieved, and the trouble of constantly adjusting the hand position of the manual screwdriver is avoided, thereby achieving efficient assembly of the folding chair. (When disassembling the screw, another assembly tool with the same structure as the transmission gear and transmission gear column 6 in the opposite direction can be used. The positions of the adjusting slider 11 and the limit block 12 can be adjusted symmetrically.)

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A folding chair assembly machine, comprising a housing, characterized in that: The housing contains a support slide rod, with a connecting ring slidably connected to its outer surface. A transmission rack and a connecting spring are also located on the outer surface of the connecting ring. The end of the connecting spring furthest from the connecting ring is positioned on the inner wall of the housing. A support shaft is located on the inner wall of the housing, with a transmission gear column rotatably connected to its outer surface. The transmission gear column meshes with the transmission rack. A transmission shaft is rotatably connected inside the housing, with two limiting discs on its outer surface. A crown gear abuts between the two limiting discs and meshes with the transmission gear column. A connecting groove is formed inside the crown gear, and an adjusting spring is located inside the connecting groove. An adjusting slider is located at one end of the adjusting spring. A limiting block is located on the outer surface of the transmission shaft, and the position of the limiting block matches the position of the adjusting slider.

2. The folding chair assembly machine according to claim 1, characterized in that: A control ring is provided on the outer surface of the housing, and a control handle is provided on the outer surface of the transmission rack. The control handle is slidably connected to the inside of the housing.

3. The folding chair assembly machine according to claim 1, characterized in that: The housing has a support ring inside, and the transmission shaft is rotatably connected inside the support ring. The size of the transmission gear column is larger than that of the crown gear.

4. A folding chair assembly machine according to claim 1, characterized in that: The limiting block is a right triangle, and the adjusting slider is a right trapezoid. The inclined surfaces of the limiting block and the adjusting slider abut against each other.

5. A folding chair assembly machine according to claim 1, characterized in that: The number of limiting blocks and adjusting sliders is several, evenly distributed inside the transmission shaft and crown gear, with the number of limiting blocks exceeding the number of adjusting blocks.

6. A folding chair assembly machine according to claim 1, characterized in that: The lower end of the drive shaft is provided with a connecting sleeve, and a rectangular insertion groove is opened inside the connecting sleeve. A rubber sleeve is provided inside the rectangular insertion groove, and a screwdriver head is inserted inside the rubber sleeve.

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