A luggage handle extension life testing device

Abstract

This invention relates to the field of mechanical testing, and more particularly to a luggage handle extension life testing device, comprising a test frame, a servo reciprocating cylinder fixedly mounted on the inner side of the test frame, a support frame fixedly mounted on the extension end of the servo reciprocating cylinder, a control plate elastically mounted on the inner center of the support frame, a support seat fixedly mounted on the front end of the control plate, a clamping rod provided on the support seat, a support shaft rotatably mounted through the upper part of the support seat, an arc-shaped bending piece fixedly mounted on the front end of the support shaft, a servo motor mounted on the upper end of the support seat, the servo motor connected to the support shaft, and two uprights symmetrically fixedly mounted on the upper rear part of the test frame. This invention ensures the smooth conduct of the extension life test of the handle and avoids damage to the internal clips caused by continuous pushing and pulling of the handle during locking, which would affect the test results.

Description

Technical Field

[0001] This invention relates to the field of mechanical testing, and more particularly to a device for testing the extension and retraction life of a suitcase handle. Background Technology

[0002] A suitcase is a portable storage container with storage compartments and can be moved by wheels at the bottom. Its pull rod is mostly a multi-section telescopic structure with built-in positioning buckles. When pulled up, it provides a gripping point to pull the suitcase. When folded up, it can fit the suitcase body to reduce the space occupied, together forming a convenient travel storage tool.

[0003] To determine whether a suitcase handle meets production standards, it is usually necessary to test its extension and retraction life. However, existing testing equipment can only perform push-pull functions. As a result, when testing the handle, because the handle has a built-in positioning buckle, the handle will lock after being pushed or pulled to the designated position, causing the handle to be unable to be pushed or pulled any further. This makes it impossible to properly test the extension and retraction life of the handle. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a luggage handle extension life testing device.

[0005] To achieve the above objectives, the technical solution adopted by this invention is as follows: a luggage handle extension life testing device, comprising a test frame, a servo reciprocating cylinder fixedly installed on the inner side of the test frame, a bearing frame fixedly installed on the extension end of the servo reciprocating cylinder, a control plate elastically installed in the middle of the inner side of the bearing frame, a bearing seat fixedly installed at the front end of the control plate, a clamping rod provided on the bearing seat, a bearing shaft rotatably mounted through the upper part of the bearing seat, an arc-shaped bending piece fixedly installed at the front end of the bearing shaft, a servo motor installed at the upper end of the bearing seat, and the servo motor connected to the bearing shaft. Two uprights are symmetrically fixedly installed at the upper rear of the test frame. Multiple protective positioning frames are elastically installed on each of the two uprights. The positions of the multiple protective positioning frames match the positions of the pull rods. Contact sensors are installed through the upper side and the lower side of the control board. The contact sensors are electrically connected to the servo motor through the controller. The bearing shaft extends through the rear end of the bearing frame. A separation frame is embedded at the rear end of the bearing shaft. Wheels are installed at the upper and lower ends of the separation frame. Separation rails are connected to the rear ends of the protective positioning frames on both sides. A fixed box is provided on the test frame.

[0006] Preferably, the output end of the servo motor is coaxially fixedly mounted with a connecting shaft, and the end of the connecting shaft and the outer surface of the bearing shaft are both coaxially inlaid with bevel gears, and the two bevel gears mesh with each other.

[0007] Preferably, a motor frame is fixedly installed at the rear end of the servo motor, the lower end of the motor frame is fixed to the bearing seat, and a shaft bracket is rotatably installed on the outer surface of the connecting shaft, the lower end of the shaft bracket is fixed to the bearing seat.

[0008] Preferably, two guide rods are embedded through the upper and lower end faces of the inner side of the support frame. The control plate is slidably mounted on the outer surface of the guide rods. Two adaptive springs are wound around the outer side of the guide rods respectively. The opposite faces of the two adaptive springs are fixed to the upper and lower end faces of the control plate respectively, and the opposite faces of the two adaptive springs are fixed to the upper and lower end faces of the inner side of the support frame respectively.

[0009] Preferably, a sleeve is slidably installed on the outer surface of the protective positioning frame, the sleeve is embedded through the front end of the upright frame, a return spring is fixedly installed on the inner side of the sleeve, the end of the return spring is fixed to the protective positioning frame, and a connecting frame extends from the middle of the opposite side of the separation rails on both sides, the end of the connecting frame is fixed to the protective positioning frame.

[0010] Preferably, the clamping member includes an upper clamp fixedly installed at the middle of the front end of the bearing seat, a threaded column is rotatably installed at the lower end of the bearing seat, a lower clamping plate is screwed onto the outer side of the threaded column, a guide column extends from the lower end of the bearing seat near the threaded column, and the lower clamping plate is slidably installed on the outer surface of the guide column.

[0011] Preferably, the mounting bracket includes a rear bending frame fixedly installed in the middle of both sides of the test frame. An L-shaped slot is provided at the upper front edge of the rear bending frame. A front bending frame is provided in front of the rear bending frame. The rear end of the front bending frame is inserted into the L-shaped slot. Two pressure frames extend symmetrically from the upper front of the test frame.

[0012] Preferably, both ends of the control board are configured as second inclined guide surfaces, and the second inclined guide surfaces at both ends of the control board are arranged in opposite directions. The opposite surfaces of the protective positioning frames on both sides are configured as first inclined guide surfaces, and the first inclined guide surfaces on the protective positioning frames on both sides are arranged in opposite directions.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the servo reciprocating cylinder drives the carrier frame to move up and down continuously to push and pull the luggage handle, when the handle is pulled to the stop position and the internal buckle of the handle is locked, the control board is pressed against the protective positioning frame. At this time, after the contact sensor senses the protective positioning frame, it will drive the servo motor to work and drive the arc-shaped bent piece on the carrier shaft to rotate downward, so as to press the button on the handle, so that the internal buckle of the handle is released and the handle can continue to be pushed and pulled, thereby ensuring that the extension and retraction life test of the handle can be carried out smoothly.

[0015] 2. When the internal latches of the pull rod are locked and the control panel is against the protective positioning frame, the control panel will remain stationary due to the restriction of the protective positioning frame, preventing it from continuing to push or pull the pull rod. At this time, the load-bearing frame will continue to move, while the adapting spring will deform, allowing the movement of the load-bearing frame to proceed unimpeded. When the load-bearing shaft drives the arc-shaped bend to rotate downwards, releasing the internal latches of the pull rod, the load-bearing shaft will continue to rotate. At this time, the arc segment of the arc-shaped bend will continue to press the button on the pull rod, keeping the internal latches of the pull rod in the released state. Simultaneously, the wheels on the separation frame will rotate under the drive of the load-bearing shaft to move the separation rails on both sides. The push mechanism moves the control board in the opposite direction, causing the protective positioning frame to move in the opposite direction as well. This disengages the end of the protective positioning frame from the control board, freeing it from the constraint of the protective positioning frame. Simultaneously, the spring returns to its original shape, pushing the control board back to the center of the support frame. During the reset process, the control board simultaneously pushes and pulls the pull rod, disengaging it from the stop position. Subsequently, the servo motor drives the support shaft to reverse and reset, releasing the button. The support frame then continues to push and pull the pull rod, repeating this cycle. This prevents the internal latches of the pull rod from being continuously pushed and pulled during locking, thus avoiding damage to the internal latches and affecting the test results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a luggage handle extension life testing device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the servo motor of the luggage handle extension life testing device of the present invention;

[0018] Figure 3 This is a schematic diagram of the upper clamp of a luggage handle extension life testing device according to the present invention;

[0019] Figure 4 This is a schematic diagram of the bearing frame of a luggage handle extension life testing device according to the present invention;

[0020] Figure 5 This is a schematic diagram of the control board of a luggage handle extension life testing device according to the present invention;

[0021] Figure 6 This invention relates to a luggage handle extension life testing device. Figure 1 Enlarged view of A in the middle;

[0022] Figure 7 This is an internal view of the frame of a luggage handle extension life testing device according to the present invention;

[0023] Figure 8 This is a view of the luggage handle extension life testing device of the present invention in use;

[0024] Figure 9 This invention relates to a luggage handle extension life testing device. Figure 8 A magnified view of B in the middle.

[0025] In the diagram: 1. Test frame; 2. Back bending frame; 3. Front bending frame; 4. Servo reciprocating push cylinder; 5. Pressure frame; 6. Servo motor; 7. Protective positioning frame; 8. Separating rail; 9. Frame sleeve; 10. No. 1 inclined guide surface; 11. Stand; 12. Control board; 13. Upper clamp; 14. Connecting shaft; 15. Bevel gear; 16. Bearing shaft; 17. Arc-shaped bending plate; 18. Lower clamp; 19. Bearing seat; 20. Bearing frame; 21. Separating frame; 22. Wheel body; 23. Contact sensor; 24. Guide column; 25. Threaded column; 26. L-shaped slot; 27. Connecting frame; 28. Guide rod; 29. ​​Adaptive spring; 30. No. 2 inclined guide surface; 31. Return spring; 32. Motor frame; 33. Shaft frame; 34. Luggage box; 35. Pull rod. Detailed Implementation

[0026] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0027] like Figures 1-9The device shown is a luggage handle extension life testing device, including a test frame 1. A servo reciprocating cylinder 4 is fixedly installed on the inner side of the test frame 1. A bearing frame 20 is fixedly installed on the extension end of the servo reciprocating cylinder 4. The servo reciprocating cylinder 4 drives the bearing frame 20 to move up and down continuously to push and pull the luggage handle 35 of the luggage 34. A control plate 12 is elastically installed in the middle of the inner side of the bearing frame 20. A bearing seat 19 is fixedly installed at the front end of the control plate 12. A clamping rod is provided on the bearing seat 19. A bearing shaft 16 is rotatably installed through the upper part of the bearing seat 19. The bearing seat 19 serves to support the bearing shaft 16. An arc-shaped bending piece 17 is fixedly installed at the front end of the bearing shaft 16. A servo motor 6 is installed on the upper end of the base 19. The servo motor 6 is connected to the bearing shaft 16 and drives the bearing shaft 16 to rotate. Two uprights 11 are symmetrically fixedly installed on the upper rear part of the test frame 1. The uprights 11 serve as load-bearing supports. Multiple protective positioning brackets 7 are elastically installed on each of the two uprights 11. The positions of the multiple protective positioning brackets 7 match the stop positions of the pull rod 35, ensuring that when the pull rod 35 is pulled to the stop position and the internal buckle of the pull rod 35 is locked, the control board 12 is exactly against the protective positioning bracket 7. Contact sensors 23 are installed through one side of the upper end and the other side of the lower end of the control board 12. When the contact sensors 23 sense the protective positioning... The frame 7 drives the servo motor 6 to rotate the arc-shaped bend 17 on the bearing shaft 16 downwards, pressing the button on the pull rod 35 to release the locking clip inside the pull rod 35, allowing the pull rod 35 to continue to be pushed and pulled. This ensures that the extension and retraction life test of the pull rod can be carried out smoothly. The contact sensor 23 is electrically connected to the servo motor 6 through the controller. Since the technology of issuing commands after sensing by the contact sensor 23 and controlling the servo motor 6 through the controller is existing technology and has been widely used, it is not described in detail here. The bearing shaft 16 extends from the rear end of the bearing frame 20, and the rear end of the bearing shaft 16 is inlaid with a separation frame 21. Wheels 22 are installed at both the upper and lower ends of the frame 21. The rear ends of the protective positioning frames 7 on both sides are connected to the separation rails 8. When the bearing shaft 16 drives the arc-shaped bending piece 17 to rotate downward, causing the buckle inside the pull rod 35 to loosen and lock, the bearing shaft 16 will continue to rotate. At this time, the arc segment of the arc-shaped bending piece 17 will continue to press the button on the pull rod 35, keeping the buckle inside the pull rod 35 in a loose state. At the same time, the wheels 22 on the separation frame 21 will rotate under the drive of the bearing shaft 16 to push the separation rails 8 on both sides, causing them to move in opposite directions, thereby driving the protective positioning frame 7 to move in opposite directions, so that the end of the protective positioning frame 7 is disengaged from the control plate 12. The test frame 1 is equipped with a fixed box.

[0028] The output end of the servo motor 6 is coaxially fixed with a connecting shaft 14, which serves as a transmission shaft. The end of the connecting shaft 14 and the outer surface of the bearing shaft 16 are both coaxially inlaid with bevel gears 15. The two bevel gears 15 mesh with each other and connect the connecting shaft 14 and the bearing shaft 16 together.

[0029] A motor frame 32 is fixedly installed at the rear end of the servo motor 6. The lower end of the motor frame 32 is fixed to the bearing seat 19. The motor frame 32 serves to fix the servo motor 6. A shaft bracket 33 is rotatably installed on the outer surface of the connecting shaft 14. The lower end of the shaft bracket 33 is fixed to the bearing seat 19. The shaft bracket 33 serves to support the connecting shaft 14.

[0030] Two guide rods 28 are embedded between the upper and lower end faces of the inner side of the support frame 20. The control plate 12 is slidably mounted on the outer surface of the guide rods 28. The guide rods 28 guide the control plate 12. Two adapting springs 29 are wound around the outer side of the guide rods 28. The opposite faces of the two adapting springs 29 are fixed to the upper and lower end faces of the control plate 12, and the opposite faces of the two adapting springs 29 are fixed to the upper and lower end faces of the inner side of the support frame 20. When the pull rod 35 is pulled to the stop position, the buckle inside the pull rod 35 locks, and the control plate 12 just touches the protective positioning frame 7. At this time, the control plate 12 will remain stationary due to the restriction of the protective positioning frame 7, so that it will not continue to push or pull the pull rod 35, while the support frame 20 continues to move. At the same time, the adapting springs 29 deform, so that the movement of the support frame 20 is not obstructed.

[0031] A sleeve 9 is slidably installed on the outer surface of the protective positioning frame 7. The sleeve 9 is embedded through the front end of the upright frame 11 and serves to guide the protective positioning frame 7. A return spring 31 is fixedly installed on the inner side of the sleeve 9. The end of the return spring 31 is fixed to the protective positioning frame 7 and serves to reset the protective positioning frame 7 after it has been moved. A connecting frame 27 extends from the middle of the opposite side of the separation rails 8 on both sides. The end of the connecting frame 27 is fixed to the protective positioning frame 7 and serves to fix the separation rails 8 and the protective positioning frame 7 together.

[0032] The clamping member includes an upper clamp 13 fixedly installed at the front center of the support seat 19. A threaded post 25 is rotatably installed at the lower end of the support seat 19. A lower clamping plate 18 is screwed onto the outer side of the threaded post 25. The threaded post 25 drives the lower clamping plate 18 to move. A guide post 24 extends from the lower end of the support seat 19 near the threaded post 25. The lower clamping plate 18 is slidably installed on the outer surface of the guide post 24. The guide post 24 guides the lower clamping plate 18 and rotates the threaded post 25 to drive the lower clamping plate 18 to move upward, thereby clamping the end of the pull rod 35 of the suitcase 34 between the upper clamp 13 and the lower clamping plate 18.

[0033] The luggage securing component includes a rear-bending frame 2 fixedly installed on the middle of both sides of the test frame 1. An L-shaped slot 26 is provided at the front edge of the upper end of the rear-bending frame 2. A front-bending frame 3 is provided in front of the rear-bending frame 2. The rear end of the front-bending frame 3 is inserted into the L-shaped slot 26. Two pressure frames 5 extend symmetrically from the front of the upper end of the test frame 1. When the luggage 34 is placed on the test frame 1, the test frame 1 is attached to the bottom and rear end of the luggage 34, the pressure frames 5 are attached to the upper end of the luggage 34, and the rear-bending frame 2 is attached to both sides of the luggage 34. Then, the front-bending frame 3 is inserted into the L-shaped slot 26 on the rear-bending frame 2, so that the front-bending frame 3 is attached to the front end of the luggage 34, thereby securing the luggage 34.

[0034] Both ends of the control plate 12 are configured with second-order inclined guide surfaces 30, which are arranged in opposite directions. The opposing surfaces of the protective positioning frames 7 on both sides are configured with first-order inclined guide surfaces 10, which are arranged in opposite directions. When the control plate 12 moves upward, the second-order inclined guide surface 30 at one end of the control plate 12 will abut against the first-order inclined guide surface 10 on one side of the protective positioning frame 7. At this time, under the action of the inclined guide surfaces, the upward-moving control plate 12 will push the protective positioning frame 7 on one side to move laterally, allowing it to pass smoothly through one side. When the control plate 12 passes through the protective positioning frame 7 on one side, the other end of the control plate 12 is pressed against the protective positioning frame 7 on the other side. At this time, the pull rod 35 is in the stop position and locked. Similarly, when the control plate 12 moves down, the second inclined guide surface 30 on the other end of the control plate 12 will push the protective positioning frame 7 on the other side to move sideways, so that the control plate 12 can pass through the protective positioning frame 7 on the other side smoothly. After passing through, one end of the control plate 12 is pressed against the protective positioning frame 7 on one side. At this time, the pull rod 35 is in the stop position and locked.

[0035] During testing, the suitcase 34 is placed on the test frame 1. At this time, the test frame 1 is attached to the bottom and rear end of the suitcase 34, the pressure frame 5 is attached to the top of the suitcase 34, and the rear bending frame 2 is attached to both sides of the suitcase 34. Then, the front bending frame 3 is inserted into the L-shaped slot 26 on the rear bending frame 2, so that the front bending frame 3 is attached to the front end of the suitcase 34, thereby fixing the suitcase 34. Then, the threaded column 25 is rotated to drive the lower clamping plate 18 to move upward, so as to clamp the end of the pull rod 35 of the suitcase 34 between the upper clamping frame 13 and the lower clamping plate 18. Then, the servo reciprocating cylinder is pushed. 4. The carrying frame 20 moves up and down continuously to push and pull the pull rod 35 of the suitcase 34. During this process, when the pull rod 35 is pulled to the stop position, the buckle inside the pull rod 35 locks, and the control plate 12 just touches the protective positioning frame 7. At this time, the control plate 12 will remain stationary due to the restriction of the protective positioning frame 7, so that it will not continue to push and pull the pull rod 35, while the carrying frame 20 continues to move. At the same time, the adapting spring 29 deforms, so that the movement of the carrying frame 20 is not obstructed. When the control plate 12 touches the protective positioning frame 7, it contacts the sensor 2. 3. Upon sensing the protective positioning frame 7, the servo motor 6 is driven to rotate the arc-shaped bend 17 on the bearing shaft 16 downwards, pressing the button on the pull rod 35. This releases the locking clip inside the pull rod 35. After release, the bearing shaft 16 continues to rotate, and the arc segment of the arc-shaped bend 17 continues to press the button on the pull rod 35, keeping the locking clip inside the pull rod 35 in a released state. Simultaneously, the wheel 22 on the separating frame 21 rotates under the drive of the bearing shaft 16, pushing the separating rails 8 on both sides to move in opposite directions, thereby... The protective positioning frame 7 moves in the opposite direction, causing its end to disengage from the control plate 12. At this time, the control plate 12 is no longer restricted by the protective positioning frame 7, and the spring 29 recovers its deformation, pushing the control plate 12 back to the middle of the support frame 20. During the reset process, the control plate 12 will simultaneously push and pull the pull rod 35, causing the pull rod 35 to disengage from the stop position. Then, the servo motor 6 drives the support shaft 16 to reverse and reset, releasing the button. The support frame 20 then continues to push and pull the pull rod 35, and so on, to test the extension and retraction life of the pull rod 35.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A luggage handle extension life testing device, comprising a test frame (1), characterized in that: A servo reciprocating cylinder (4) is fixedly installed on the inner side of the test frame (1). A bearing frame (20) is fixedly installed on the telescopic end of the servo reciprocating cylinder (4). A control plate (12) is elastically installed in the middle of the inner side of the bearing frame (20). A bearing seat (19) is fixedly installed at the front end of the control plate (12). A clamping rod is provided on the bearing seat (19). A bearing shaft (16) is rotatably installed through the upper part of the bearing seat (19). An arc-shaped bending piece (17) is fixedly installed at the front end of the bearing shaft (16). A servo motor (6) is installed at the upper end of the bearing seat (19). The servo motor (6) is connected to the bearing shaft (16). Two servo motors are symmetrically fixedly installed at the rear upper part of the test frame (1). The stand (11) has multiple protective positioning frames (7) elastically installed on each of the two stands (11). The positions of the multiple protective positioning frames (7) match the positions of the pull rod. The upper side and the lower side of the control board (12) are both equipped with contact sensors (23). The contact sensors (23) are electrically connected to the servo motor (6) through the controller. The bearing shaft (16) extends from the rear end of the bearing frame (20). The rear end of the bearing shaft (16) is inlaid with a separation frame (21). The upper and lower ends of the separation frame (21) are equipped with wheels (22). The rear ends of the protective positioning frames (7) on both sides are connected with separation rails (8). The test frame (1) is equipped with a fixed box. A sleeve (9) is slidably installed on the outer surface of the protective positioning frame (7). The sleeve (9) is embedded through the front end of the upright frame (11). A return spring (31) is fixedly installed on the inner side of the sleeve (9). The end of the return spring (31) is fixed to the protective positioning frame (7). A connecting frame (27) extends from the middle of the opposite side of the separation rails (8) on both sides. The end of the connecting frame (27) is fixed to the protective positioning frame (7). The clamping member includes an upper clamp (13) fixedly installed at the middle of the front end of the bearing seat (19). A threaded column (25) is rotatably installed at the lower end of the bearing seat (19). A lower clamp (18) is screwed onto the outer side of the threaded column (25). A guide column (24) extends from the lower end of the bearing seat (19) to the side near the threaded column (25). The lower clamp (18) is slidably installed on the outer surface of the guide column (24).

2. The luggage handle extension life testing device according to claim 1, characterized in that: The output end of the servo motor (6) is coaxially fixedly mounted with a connecting shaft (14). The end of the connecting shaft (14) and the outer surface of the bearing shaft (16) are both coaxially inlaid with bevel gears (15), and the two bevel gears (15) mesh with each other.

3. The luggage handle extension life testing device according to claim 2, characterized in that: The servo motor (6) has a motor frame (32) fixedly installed at its rear end. The lower end of the motor frame (32) is fixed to the bearing seat (19). The outer surface of the connecting shaft (14) is rotatably mounted with a shaft frame (33). The lower end of the shaft frame (33) is fixed to the bearing seat (19).

4. The luggage handle extension life testing device according to claim 1, characterized in that: Two guide rods (28) are embedded between the upper and lower end faces of the inner side of the support frame (20). The control plate (12) is slidably mounted on the outer surface of the guide rods (28). Two adapting springs (29) are wound around the outer side of the guide rods (28). The opposite faces of the two adapting springs (29) are fixed to the upper and lower end faces of the control plate (12), and the opposite faces of the two adapting springs (29) are fixed to the upper and lower end faces of the inner side of the support frame (20).

5. The luggage handle extension life testing device according to claim 1, characterized in that: The mounting bracket includes a rear bending frame (2) fixedly installed in the middle of both sides of the test frame (1). An L-shaped slot (26) is provided at the front edge of the upper end of the rear bending frame (2). A front bending frame (3) is provided in front of the rear bending frame (2). The rear end of the front bending frame (3) is inserted into the L-shaped slot (26). Two pressure frames (5) extend symmetrically from the front of the upper end of the test frame (1).

6. The luggage handle extension life testing device according to claim 1, characterized in that: Both ends of the control plate (12) are set as second inclined guide surfaces (30), and the second inclined guide surfaces (30) at both ends of the control plate (12) are set in opposite directions. The opposite surfaces of the protective positioning frames (7) on both sides are set as first inclined guide surfaces (10), and the first inclined guide surfaces (10) on the protective positioning frames (7) on both sides are set in opposite directions.

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