Automatic dismounting device for spraying clamp

Abstract

The automatic dismounting device comprises a frame body, a clamping mechanism and a positioning mechanism, a supporting plate is fixedly connected to the upper end of the frame body, a device plate is fixedly connected to the upper end of the frame body, a part taking air cylinder is arranged at the upper end of the supporting plate, and the piston end of the part taking air cylinder penetrates through the device plate in a sliding mode; a cleaning mechanism for cleaning the clamping mechanism is arranged at the upper end of the clamping mechanism; the clamping mechanism is arranged at the upper end of the device plate and used for clamping the automobile parts needing to be sprayed. The positioning mechanism is arranged at the upper end of the device plate and used for positioning a part needing to be sprayed, the clamping head can be independently cleaned by arranging the mechanism, the manual maintenance time and cost are saved, the situation that the follow-up clamping precision is affected by curing of residual paint can be avoided, and the service life of the clamping mechanism is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spraying fixture, in particular to a spraying fixture automatic dismounting device. BACKGROUND

[0002] In the field of part spraying processing, the spraying fixture is the core equipment to guarantee the positioning accuracy of parts and ensure the spraying quality, and its performance directly affects the part spraying efficiency and the qualified rate of finished products.

[0003] For example, a five-grab spraying fixture dismounting device is disclosed on China Patent Network, the patent number of which is "CN102699661B". The device mainly sets a rack structure, a dismounting structure, a fixture collecting box and a five-grab support collecting box. The rack structure is arranged on three sides of the dismounting structure, the five-grab support collecting box is arranged below the support funnel in the dismounting structure, and the fixture collecting box is arranged on the fourth side of the dismounting structure. Thus, the entire dismounting process is reduced to a simple action, which plays a role in quickly removing the workpiece, reduces the labor intensity of manual operation, and improves the production efficiency. However, the device only plays a role in quickly dismounting and removing the workpiece, and the dust adhered to the workpiece still needs to be cleaned manually, and the spraying material unintentionally adhered to the fixture during the spraying process will affect the subsequent use of the fixture.

[0004] Therefore, the present application proposes a new spraying fixture automatic dismounting device. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and provide a spraying fixture automatic dismounting device.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A spraying fixture automatic dismounting device, comprising a frame body, a clamping mechanism and a positioning mechanism. The upper end of the frame body is fixedly connected with a support plate, and the upper end of the frame body is fixedly connected with a device plate. The upper end of the support plate is provided with a workpiece taking cylinder, and the piston end of the workpiece taking cylinder slides through the device plate. The upper end of the clamping mechanism is provided with a cleaning mechanism for cleaning the clamping mechanism. The clamping mechanism is arranged at the upper end of the device plate, and is used for clamping the automobile parts to be sprayed. The positioning mechanism is arranged at the upper end of the device plate, and is used for positioning the parts to be sprayed.

[0007] Preferably, the positioning mechanism comprises a reciprocating sliding member and an extension member. The reciprocating sliding member can reciprocate transversely, and the extension member can freely contract and expand transversely. The extension member is used to drive the reciprocating sliding member to slide.

[0008] Preferably, the clamping mechanism comprises a reciprocating telescopic member and a clamping member, the reciprocating telescopic member is freely reciprocating and telescoping and unfolding, and the clamping member is sectorial movement, and the reciprocating telescopic member is used for driving the sectorial movement of the clamping member.

[0009] Preferably, the cleaning mechanism comprises a cleaning frame and a cleaning sponge arranged on the inner wall of the cleaning frame, the cleaning frame is arranged at the upper end of the clamping mechanism, and the upper end of the cleaning frame is provided with a liquid injection mechanism for injecting the cleaning sponge with cleaning liquid.

[0010] Preferably, the liquid injection mechanism comprises a transverse reset member, a transverse sliding member, a liquid injection tank and a liquid injection pipe, the lower end of the liquid injection tank is fixedly connected with a support, the support is fixedly connected with the cleaning frame, and the liquid injection pipe is fixedly connected at the lower end of the liquid injection tank.

[0011] Preferably, the transverse sliding member is arranged in the liquid injection pipe, the transverse sliding member is transversely slidable, the sectorial movement of the clamping member drives the sliding of the transverse sliding member, the transverse reciprocating member is arranged at the side end of the transverse sliding member, the transverse reset member is retractable and extendable, and the transverse reset member is used for driving the reset of the transverse sliding member.

[0012] Preferably, the side end of the positioning mechanism is provided with a blowing mechanism, and the blowing mechanism is used for cleaning the surface of the clamped workpiece.

[0013] Preferably, the blowing mechanism comprises a storage member and an output member, the storage member is arranged at the side end of the clamping mechanism and is used for storing and collecting gas, the output member is arranged at the side end of the clamping mechanism and is used for cleaning the surface of the clamped workpiece, and the jet direction of the output member forms an angle of 30°-60° with the surface of the workpiece to be cleaned. Preferably, the axis of the taking cylinder is perpendicular to the device plate, which ensures that the taking cylinder does not deviate when driving the lifting of the part, and improves the stability of taking the part. Preferably, the distance from the connection position of the reciprocating telescopic member and the clamping member to the clamping end of the clamping member is 1 / 2-2 / 3 of the distance from the connection position of the reciprocating telescopic member and the fixed structure to the clamping end of the clamping member. The present application has the following beneficial effects: 1. The device can flexibly adjust the position of the cylinder according to the size of the part to be sprayed through the modular design (sliding rail, sliding block, placement plate cooperating with cylinder driving) of the positioning mechanism, so that the bottom of the placed part is tightly attached to the placement plate; at the same time, the axis of the taking cylinder is perpendicular to the device plate, which ensures that the cylinder does not deviate when driving the lifting of the part, avoids the spraying deviation caused by the positioning deviation of the part, accurately lifts the part to a safe height for taking, reduces the collision risk between the part and the clamping mechanism when taking the part manually, and guarantees the spraying quality and operation safety from positioning to taking.

[0014] 2. The clamping mechanism uses a telescopic cylinder to drive the first and second transmission rods in a coordinated motion, causing the clamping head to move in a fan-shaped motion to firmly clamp the parts. After spraying, when the clamping head moves in the reverse fan-shaped motion, the drive rod pushes the synchronization rod of the liquid injection mechanism, triggering the liquid injection tube to open and deliver cleaning fluid to the cleaning sponge. This allows the clamping head to automatically wipe away surface coating and impurities during its reset process. This coordinated design eliminates the need for manual cleaning of the clamping head, saving time and costs associated with manual maintenance, preventing residual coating from hardening and affecting subsequent clamping accuracy, and effectively extending the service life of the clamping mechanism.

[0015] 3. The compressed gas generated by the cylinder of the positioning mechanism during operation can be introduced into the air storage tank of the blowing mechanism through the air inlet pipe. After being buffered and stabilized by the air storage tank, it is sprayed directionally through the jet nozzle after the part is positioned, which efficiently cleans the dust, debris and other impurities on the surface of the workpiece, providing a clean workpiece surface for subsequent clamping and spraying. This design does not require additional air source equipment and can recover and reuse the exhaust gas from the cylinder operation. It not only realizes the automation of workpiece pretreatment, but also reduces energy waste, achieving the dual effect of functional improvement and energy saving. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an automatic disassembly device for a spraying fixture proposed in this invention; Figure 2 A top view schematic diagram of an automatic disassembly device for spraying fixtures; Figure 3 Side view of the automatic disassembly device for spraying fixtures; Figure 4 This is a side view of the clamping mechanism structure; Figure 5 This is a schematic diagram of part of the liquid injection mechanism; Figure 6 The diagram shows a schematic of the jet mechanism.

[0017] In the diagram: 1. Frame, 2. Device plate, 3. Support plate, 4. Picking cylinder, 5. Slide rail, 6. Cylinder, 7. Slider, 8. Placement plate, 10. Fixing frame, 11. Telescopic cylinder, 12. First transmission rod, 13. Second transmission rod, 14. Clamping head, 15. Cleaning rack, 16. Cleaning sponge, 17. Injection pipe, 18. Bracket, 19. Injection tank, 20. Return spring, 21. Slide plate, 22. Synchronizing rod, 23. Drive rod, 24. Blocking plate, 25. Jet nozzle, 26. Inlet pipe, 27. Outlet pipe, 28. Air storage tank. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1:

[0019] An automatic disassembly device for a spraying fixture includes a frame 1, a clamping mechanism, and a positioning mechanism. A support plate 3 is fixedly connected to the upper end of the frame 1, and a device plate 2 is fixedly connected to the upper end of the frame 1. A part-picking cylinder 4 is provided at the upper end of the support plate 3. The piston end of the part-picking cylinder 4 slides through the device plate 2. A cleaning mechanism for cleaning the clamping mechanism is provided at the upper end of the clamping mechanism. The clamping mechanism is located at the upper end of the device plate 2 and is used to clamp the automotive parts to be sprayed. The positioning mechanism is set at the upper end of the device plate 2. The positioning mechanism is used to position the parts to be sprayed. The positioning mechanism includes a reciprocating sliding component and a telescopic component. The reciprocating sliding component can slide back and forth laterally, and the telescopic component can freely retract and extend laterally. The telescopic component is used to drive the axis of the reciprocating sliding component to slide the part-picking cylinder 4 to remain perpendicular to the device plate 2, ensuring that there is no deviation when the part-picking cylinder 4 drives the part to rise and fall, and improving the stability of part picking.

[0020] Reference Figures 1-6 In this embodiment, the reciprocating sliding member can be specifically made into a slide rail 5, a slider 7, and a placement plate 8, and the telescopic member can be specifically made into a cylinder 6. The slide rail 5 is fixedly connected to the upper end of the device plate 2, the cylinder 6 is slidably arranged on the slide rail 5, and the cylinder 6 is fixedly limited by bolts. The slider 7 is slidably arranged on the slide rail 5, and the telescopic end of the cylinder 6 is fixedly connected to the slider 7. The placement plate 8 is fixedly connected to the slider 7.

[0021] It should be further noted that a part-removing fixture can be installed at the upper end of the part-removing cylinder 4 as needed to avoid damaging the workpiece. In this embodiment, the operator loosens the fixing bolts of cylinder 6 in the positioning mechanism according to the size and specifications of the part to be painted, slides and adjusts cylinder 6 to a suitable position, and then fixes it with bolts again. The operator then places the car part to be painted steadily on the placement plate 8 of the positioning mechanism, ensuring that the bottom of the part is in contact with the surface of the placement plate 8 to avoid affecting subsequent positioning accuracy due to placement misalignment. At this time, cylinder 6 is activated. The telescopic end of cylinder 6 pushes the slider 7 fixedly connected to it, causing slider 7 to slide laterally along the slide rail 5. (Place plate 8 and slider 7 are fixedly connected; the movement of slider 7 directly drives the placement plate 8 to move synchronously.) When the car part on the placement plate 8 reaches the preset painting positioning position, the control system sends a signal to stop cylinder 6 from extending. At this time, slider 7 stops sliding, and the part is positioned.

[0022] After the part is positioned, the equipment control system sends a start signal to the clamping mechanism, which then begins to clamp and fix the part. Once clamping is complete, a linkage signal is sent to the spraying equipment, which starts according to the preset spraying path and parameters to spray the positioned and clamped automotive part. After spraying, the clamping mechanism releases the part and activates the part-removing cylinder 4. The piston end of the part-removing cylinder 4 extends, slides through the device plate 2, and continues to extend upward until the piston end contacts the sprayed part, moving the part upward. When the part moves to a position higher than the clamping mechanism, making it easy for the operator to remove, the part-removing cylinder 4 stops extending, and the operator removes the sprayed part, completing the part removal process. After the part is removed, the piston end of the part removal cylinder 4 continues to retract to the initial state, the clamping mechanism resets, and waits for the next part to be painted, completing a complete workflow. Example 2:

[0023] The clamping mechanism includes a reciprocating telescopic component and a clamping component. The reciprocating telescopic component can freely reciprocate and extend, while the clamping component can move in a fan-shaped motion. The reciprocating telescopic component drives the clamping component in this fan-shaped motion. The cleaning mechanism includes a cleaning frame 15 and a cleaning sponge 16 disposed on the inner wall of the cleaning frame. The cleaning frame 15 is disposed at the upper end of the clamping mechanism, and an injection mechanism for injecting cleaning fluid into the cleaning sponge 16 is provided at the upper end of the cleaning frame 15.

[0024] The liquid injection mechanism includes a transverse reset component, a transverse sliding component, a liquid injection tank 19, and a liquid injection pipe 17. A bracket 18 is fixedly connected to the lower end of the liquid injection tank, and the bracket 18 is fixedly connected to the cleaning rack 15. The liquid injection pipe 17 is fixedly connected to the lower end of the liquid injection tank 19. The distance from the connection position of the reciprocating telescopic component and the clamping component to the clamping end of the clamping component is 1 / 2 to 2 / 3 of the distance from the connection position of the reciprocating telescopic component and the fixed structure to the clamping end of the clamping component.

[0025] The lateral sliding member is located inside the injection tube and can slide laterally. When the clamping member moves in a fan shape, it will drive the lateral sliding member to slide. The lateral reciprocating member is located at the side end of the lateral sliding member. The lateral reset member can retract and extend and is used to drive the lateral sliding member to reset.

[0026] Reference Figures 3-4In this embodiment, the reciprocating telescopic component can be specifically made into a telescopic cylinder 11, and the clamping component can be specifically made into a fixed frame 10. The first transmission rod 12, the second transmission rod 13, the clamping head 14, and the fixed frame 10 are fixedly connected to the upper end of the device plate 2. The telescopic cylinder 11 is fixedly installed on the side wall of the fixed frame 10. The first transmission rod 12 is rotatably connected to the telescopic end of the telescopic cylinder 11, and the second transmission rod 13 is rotatably connected to the fixed frame 10. The end of the second transmission rod 13 away from the fixed frame 10 is rotatably connected to the first transmission rod 12, and the end of the first transmission rod 12 away from the telescopic cylinder 11 is connected to the clamping head. 14. Fixed connection. The transverse reset component can be specifically made into a reset spring 20, the transverse sliding component can be specifically made into a slide plate 21, and the synchronizing rod 22. The injection tube 17 has a groove. The slide plate 21 is slidably connected in the groove of the injection tube 17. The synchronizing rod 22 is fixedly connected to the slide plate 21. The reset spring 20 is set at the rear end of the slide plate 21. One end of the reset spring 20 is fixedly connected to the slide plate 21, and the other end is fixedly connected to a baffle plate 24. The baffle plate 24 is fixedly connected to the cleaning rack 15. The side wall of the first transmission rod 12 is fixedly connected to a drive rod 23. The drive rod 23 is used to drive the synchronizing rod 22.

[0027] It should be further noted that a pressure sensor is provided on the clamping head 14 to detect the clamping pressure, thereby avoiding damage to the workpiece due to excessive clamping force.

[0028] In this embodiment, after the part is positioned, the control system sends a start signal to the telescopic cylinder 11 of the clamping mechanism. The telescopic cylinder 11 begins to extend, and its telescopic end pushes the first transmission rod 12, which is rotatably connected to it. After being pushed by the telescopic cylinder 11, the first transmission rod 12 rotates around the rotation point of the telescopic cylinder 11, and at the same time drives the second transmission rod 13, which is rotatably connected to it. Due to the rotational limitation between the second transmission rod 13 and the fixing frame 10, the first transmission rod 12 drives the clamping head 14 to make a fan-shaped movement during the movement, moving from the initial open position toward the part.

[0029] As the telescopic cylinder 11 continues to extend, the transmission angles of the first transmission rod 12 and the second transmission rod 13 gradually change, and the clamping head 14 gradually approaches the surface of the part. When the clamping head 14 contacts the surface of the part and applies clamping force, the telescopic cylinder 11 stops extending and maintains its current telescopic length after clamping and fixing. The first transmission rod 12 and the second transmission rod 13 maintain their current transmission angles, and the clamping head 14 firmly clamps the part, preventing loosening and displacement during spraying. The clamping stage is then complete.

[0030] After the spraying is completed, the telescopic cylinder 11 begins to retract (in preparation for the subsequent release of the parts), driving the first transmission rod 12 to rotate in the opposite direction, which in turn pulls the second transmission rod 13 to rotate in the opposite direction synchronously. The clamping head 14 moves in a reverse fan-shaped motion with the first transmission rod 12. At this time, the drive rod 23 fixed to the side wall of the first transmission rod 12 moves with the first transmission rod 12, contacts the synchronous rod 22 of the liquid injection mechanism, and pushes the synchronous rod 22. After being pushed by the drive rod 23, the synchronizing rod 22 drives the slide plate 21 (lateral sliding member) fixed thereto to slide laterally along the groove opened in the injection pipe 17. During the sliding process of the slide plate 21, the passage of the injection pipe 17 is opened, and the cleaning fluid in the injection tank 19 flows out through the injection pipe 17 and is injected into the cleaning sponge 16 on the inner wall of the cleaning rack 15. At the same time, the slide plate 21 compresses the return spring 20 at the rear end, and the return spring 20 stores elastic potential energy. Cleaning via fan-shaped motion of the clamping component: As the telescopic cylinder 11 continues to retract, the clamping head 14 continues to make a reverse fan-shaped motion, gradually entering the interior of the cleaning frame 15. At this time, the cleaning sponge 16 has absorbed sufficient cleaning fluid. During the fan-shaped motion, the surface of the clamping head 14 comes into full contact with and rubs against the cleaning sponge 16, and the cleaning sponge 16 wipes and cleans the residual paint and impurities on the surface of the clamping head 14. After the clamping head 14 completes the fan-shaped cleaning motion, the drive rod 23 and the synchronizing rod 22 disengage. At this time, the return spring 20 releases its elastic potential energy, pushing the slide plate 21 to slide in the opposite direction along the groove of the injection tube 17. The synchronizing rod 22 returns to its initial position synchronously with the slide plate 21, and the injection tube 17 stops injecting liquid, preparing for the next cleaning injection. Example 3:

[0031] Compared to Embodiment 2, in this embodiment, the positioning mechanism is provided with an air blowing mechanism on its side. The air blowing mechanism is used to clean the surface of the workpiece to be clamped. The air blowing mechanism includes a storage component and an output component. The storage component is provided on the side of the clamping mechanism and is used to store and collect gas. The output component is provided on the side of the clamping mechanism and is used to clean the surface of the workpiece to be clamped. The air jet direction of the output component forms an angle of 30° to 60° with the surface of the workpiece to be cleaned.

[0032] In this embodiment, the storage component can be specifically made into an air tank 28, and the output component can be specifically made into a jet head 25. The air tank 28 is fixedly connected to an air inlet pipe 26. The end of the air inlet pipe 26 away from the air tank is fixedly connected to the cylinder 6. The jet head 25 is fixedly connected to an air outlet pipe 27. The end of the air outlet pipe 27 away from the jet head 25 is fixedly connected to the air tank 28.

[0033] It should be noted that both the intake pipe 26 and the exhaust pipe 27 are equipped with one-way control valves.

[0034] When the cylinder 6 of the specific positioning mechanism drives the slider 7 to slide along the slide rail 5, compressed gas is generated inside it (during the operation of the cylinder, the piston movement pushes the gas inside the cylinder to compress, generating compressed air with a certain pressure). At this time, the air inlet pipe 26, which is fixedly connected to the cylinder 6, will introduce the compressed gas generated in the cylinder 6 into the air storage tank 28. After the compressed gas continuously enters the air storage tank 28 through the air inlet pipe 26, the air storage tank 28 will temporarily store and regulate the pressure of the gas. Since the extension and retraction of the cylinder 6 is intermittent, the gas introduced by the air inlet pipe 26 is also intermittently input. The air storage tank 28 can buffer this intermittency through its own volume, so that the internal gas pressure gradually stabilizes within the preset working pressure range. After the positioning mechanism completes the positioning of the part, when the blowing mechanism starts to work, the control valve between the air storage tank 28 and the air outlet pipe 27 opens, and the high-pressure compressed gas stored in the air storage tank 28 is quickly delivered to the jet head 25 through the air outlet pipe 27. After the high-pressure compressed gas reaches the jet head 25, it will act on the surface of the workpiece to be clamped in a directional spray manner through the nozzle at a preset angle. The jet airflow impacts the dust, debris, and other solid impurities on the workpiece surface, peeling them off and blowing them away from the workpiece area. The entire jet cleaning process lasts for a preset time (usually 3 to 5 seconds, adjusted according to the type and degree of adhesion of the impurities) to ensure that the impurities in the key areas of the workpiece surface are thoroughly cleaned.

[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic disassembly device for a spraying fixture, comprising a frame (1), a clamping mechanism, and a positioning mechanism, characterized in that: The upper end of the frame (1) is fixedly connected to a support plate (3), the upper end of the frame (1) is fixedly connected to a device plate (2), the upper end of the support plate (3) is provided with a part-removing cylinder (4), the piston end of the part-removing cylinder (4) slides through the device plate (2), and the upper end of the clamping mechanism is provided with a cleaning mechanism for cleaning the clamping mechanism. The clamping mechanism is located at the upper end of the device plate (2) and is used to clamp the automotive parts to be sprayed. The positioning mechanism is located at the upper end of the device plate (2) and is used to position the parts to be sprayed.

2. The automatic disassembly device for a spraying fixture according to claim 1, characterized in that: The positioning mechanism includes a reciprocating slider and a telescopic member. The reciprocating slider can slide laterally back and forth, and the telescopic member can freely retract and extend laterally. The telescopic member is used to drive the reciprocating slider to slide.

3. The automatic disassembly device for a spraying fixture according to claim 1, characterized in that: The clamping mechanism includes a reciprocating telescopic component and a clamping component. The reciprocating telescopic component can freely reciprocate and extend and expand, and the clamping component can move in a fan-shaped motion. The reciprocating telescopic component is used to drive the clamping component to move in a fan-shaped motion.

4. The automatic disassembly device for a spraying fixture according to claim 3, characterized in that: The cleaning mechanism includes a cleaning frame and a cleaning sponge disposed on the inner wall of the cleaning frame. The cleaning frame is disposed at the upper end of the clamping mechanism, and the upper end of the cleaning frame is provided with a liquid injection mechanism for injecting cleaning liquid into the cleaning sponge.

5. The automatic disassembly device for a spraying fixture according to claim 4, characterized in that: The liquid injection mechanism includes a horizontal reset component, a horizontal sliding component, a liquid injection tank, and a liquid injection tube. A bracket is fixedly connected to the lower end of the liquid injection tank, and the bracket is fixedly connected to the cleaning rack. The liquid injection tube is fixedly connected to the lower end of the liquid injection tank.

6. The automatic disassembly device for a spraying fixture according to claim 5, characterized in that: The lateral sliding member is disposed inside the injection tube and can slide laterally. When the clamping member moves in a fan shape, it drives the lateral sliding member to slide. The lateral reciprocating member is disposed at the side end of the lateral sliding member. The lateral reset member can retract and extend and is used to drive the lateral sliding member to reset.

7. The automatic disassembly device for a spraying fixture according to claim 1, characterized in that: The positioning mechanism is provided with an air blowing mechanism on its side, which is used to clean the surface of the workpiece to be clamped.

8. The automatic disassembly device for a spraying fixture according to claim 7, characterized in that: The blowing mechanism includes a storage component and an output component. The storage component is located at the side end of the clamping mechanism and is used to store and collect gas. The output component is located at the side end of the clamping mechanism and is used to clean the surface of the workpiece to be clamped. The air jet direction of the output component forms an angle of 30° to 60° with the surface of the workpiece to be cleaned.

9. The automatic disassembly device for a spraying fixture according to claim 1, characterized in that: The axis of the part-picking cylinder 4 is perpendicular to the device plate 2, ensuring that there is no deviation when the part-picking cylinder 4 drives the part to rise and fall, thus improving the stability of part picking.

10. An automatic disassembly device for a spraying fixture according to claim 3, characterized in that: The distance from the connection point between the reciprocating telescopic member and the clamping member to the clamping end of the clamping member is 1 / 2 to 2 / 3 of the distance from the connection point between the reciprocating telescopic member and the fixed structure to the clamping end of the clamping member.

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