Flexible telescoping module

Abstract

The utility model relates to a kind of flexible telescopic module, including fixed part, sliding part and driving device, fixed part has the accommodating cavity of distal end opening, sliding part is worn in accommodating cavity, driving device drives sliding part to move along the axial direction of accommodating cavity to make sliding part distal end from opening stretch out or retract, stroke switch is equipped between fixed part and sliding part for limiting the stretch out or retract distance of sliding part;The upper side between the proximal end of sliding part and the cavity wall of accommodating cavity is equipped with first rolling element, the bottom between the distal end of fixed part and sliding part is equipped with second rolling element, it is by being set between sliding part and fixed part rolling element, and sliding part can be adjusted, there is gap between fixed part and sliding part, ensure the condition of sliding fit, change the friction between sliding part and fixed part into rolling friction, greatly reduce the wear of contact surface, while, the condition that sliding part can be reduced and stuck in fixed part.

Description

Technical Field

[0001] This utility model relates to the field of telescopic mechanism technology, specifically to a flexible telescopic module. Background Technology

[0002] In the production or maintenance of large vehicles or equipment, specialized production and maintenance tooling is required. Existing technology, to expand the adaptability of tooling and make it suitable for the production and maintenance of different types of vehicles or equipment, uses multiple telescopic components to form a flexible platform. By operating each telescopic component, the extension distance can be adjusted according to actual operational needs, ensuring a suitable safe clearance between the extended end and the working surface for worker convenience. However, existing telescopic mechanisms cannot limit the extension distance of the telescopic components, and the frictional contact between the sliding component and the fixed component leads to severe wear between them. After the sliding component extends beyond the fixed component, it bears a large load in the vertical direction. Even increasing the thickness of the sliding component may result in slight deformation, potentially causing jamming. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a flexible telescopic module, which sets a rolling element between the sliding element and the fixed element, and the rolling element can be adjusted to create a gap between the fixed element and the sliding element. While ensuring sliding fit, the friction between the sliding element and the fixed element is changed to rolling friction, which greatly reduces the wear of the contact surface and reduces the possibility of the sliding element getting stuck in the fixed element.

[0004] This utility model provides a flexible telescopic module to solve the above-mentioned technical problems, including a fixing member, a sliding member, and a driving device. The fixing member has a receiving cavity with a distal opening. The sliding member passes through the receiving cavity. The driving device drives the sliding member to move along the axial direction of the receiving cavity so that the distal end of the sliding member extends or retracts from the opening. A limit switch is provided between the fixing member and the sliding member to limit the extension or retraction distance of the sliding member. A first rolling member is provided between the upper side of the proximal end of the sliding member and the cavity wall of the receiving cavity, and a second rolling member is provided between the bottom of the distal end of the fixing member and the sliding member.

[0005] Furthermore, the limit switch is provided in two sets and is located at the near end and far end of the fixing member respectively. The bottom wall of the fixing member is provided with a first notch, and the sliding member is provided with a limiting member protruding from the outer wall of the sliding member. The contact end of the limit switch can pass through the first notch and contact the limiting member.

[0006] Furthermore, the upper sidewall of the proximal end of the slider is provided with at least one second notch, and the first rolling element includes a first mounting block fixed to the inner cavity of the slider, and the first mounting block is provided with a first roller assembly that partially passes through the second notch and contacts the cavity wall of the receiving cavity.

[0007] Furthermore, the fixing member has at least one third notch on its distal bottom wall, the second rolling member includes a stop block on the fixing member, a second mounting block is fixed to the stop block by bolts, a spacing adjustment member is provided between the second mounting block and the stop block, and a second roller group is provided on the second mounting block, which partially passes through the third notch and contacts the bottom wall of the sliding member.

[0008] Furthermore, the spacing adjustment component includes a set screw, and the second mounting block is provided with a screw hole. The set screw is threadedly engaged with the screw hole, and its inner end abuts against the stop block.

[0009] Furthermore, the third notch is provided in two sets and symmetrically arranged on both sides of the abutment block. Each third notch is provided with a second roller set, and the second roller set includes two second rollers.

[0010] Furthermore, the driving device includes a driving part connected to the fixed member and a threaded sleeve connected to the sliding member, the output end of the driving part is connected to the lead screw, and the threaded sleeve is threadedly connected to the lead screw.

[0011] Furthermore, the fixing member is provided with a mounting seat for fixing the drive unit. The output end of the drive unit is connected to the lead screw through a coupling. The mounting seat is provided with a mounting cavity. A bearing sleeved on the near end of the lead screw is provided in the mounting cavity. A sleeve is supported by a rib in the inner cavity of the sliding member. The lead screw is movably disposed in the sleeve.

[0012] Furthermore, both the fixing member and the sliding member are made of steel or aluminum profiles with a rectangular cross-section.

[0013] Furthermore, a touch sensor is also provided at the distal end of the slider.

[0014] The beneficial effects of this utility model are as follows: the sliding member is inserted into the receiving cavity of the fixed member. The receiving cavity is used to constrain the movement trajectory of the sliding member. Under the drive of the driving device, the sliding member is moved along the axial direction of the receiving cavity so that the distal end of the sliding member extends or retracts from the opening, so that the extended end of the sliding member approaches or moves away from the working range. By setting a light touch sensor at the distal end of the sliding member, the light touch sensor contacts the obstacle and feeds the signal back to the driving device so that it can control the extension distance of the sliding member.

[0015] A limit switch is installed between the fixed part and the sliding part to limit the extension or retraction distance of the sliding part, prevent overshoot when the sliding part extends or retracts, and improve the safety performance during use.

[0016] A first rolling element is provided between the upper side of the proximal end of the slider and the cavity wall of the receiving cavity, and a second rolling element is provided between the bottom of the distal end of the fixed member and the slider. This can transform the friction between the fixed member and the slider into rolling friction, reduce the friction surface, and reduce the wear between the fixed member and the slider. Furthermore, after the slider extends out of the fixed member, under the action of gravity, the inner end of the slider tilts upward, and the side near the outer end tilts downward and abuts against the opening side of the fixed member, bearing a large load on both sides. By setting the first and second rolling elements on the upper and lower sides respectively, the frictional resistance can be further reduced to ensure that the slider can smoothly extend or retract from the fixed member. Moreover, when the slider extends out of the fixed member, the opening side of the fixed member bears a greater load. The second rolling element provides rigid support for the slider and can also apply a large reaction force to disperse the pressure on the receiving cavity.

[0017] Furthermore, the pressure between the second roller assembly and the sliding member in the second rolling member can be adjusted by the set screw, so that they are in rigid contact with the sliding member to provide stable support for the sliding member, while ensuring that there is a certain gap between the top wall of the sliding member and the inner wall of the fixed member, so that the sliding member can move in the receiving cavity.

[0018] In summary, by incorporating a rolling element between the sliding element and the fixed element, and by adjusting the rolling element to create a gap between the fixed element and the sliding element, the friction between the sliding element and the fixed element is transformed into rolling friction while ensuring a sliding fit. This greatly reduces wear on the contact surface and also reduces the possibility of the sliding element getting stuck in the fixed element.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the sliding component of this utility model;

[0022] Figure 3 This is a structural schematic diagram of the fastener of this utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 5 for Figure 4 A magnified view of the details of A;

[0025] Figure 6 for Figure 4 A magnified view of the details of B.

[0026] In the attached diagram: 100-fixed component, 110-receiving cavity, 120-opening, 130-first notch, 140-third notch, 150-mounting seat, 151-mounting cavity, 200-sliding component, 210-limiting component, 220-second notch, 230-sleeve, 240-rib, 250-touch sensor, 300-drive device, 310-drive unit, 320-screw sleeve, 330-lead screw, 340-coupling, 350-bearing, 400-limit switch, 500-first rolling component, 510-first mounting block, 520-first roller group, 600-second rolling component, 610-stop block, 620-second mounting block, 621-screw hole, 630-gap adjusting component, 640-second roller group. Detailed Implementation

[0027] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0028] Reference Figures 1 to 6 This utility model provides a flexible telescopic module, including a fixing member 100, a sliding member 200, and a driving device 300. The fixing member 100 has a receiving cavity 110 with a distal opening 120. The sliding member 200 passes through the receiving cavity 110, which constrains the movement trajectory of the sliding member 200. The driving device 300 drives the sliding member 200 to move along the axial direction of the receiving cavity 110, causing the distal end of the sliding member 200 to extend or retract from the opening 120, thus moving the extended end of the sliding member 200 closer to or further away from the working range. Furthermore, the distal end of the sliding member 200 is also provided with a touch sensor 250. By contacting an obstacle, the touch sensor 250 feeds a signal back to the driving device 300, enabling it to control the extension distance of the sliding member 200.

[0029] Furthermore, both the fixing member 100 and the sliding member 200 are made of steel or aluminum profiles with a rectangular cross-section. Steel has high strength and excellent load-bearing capacity, while aluminum profiles can reduce weight. Different materials can be selected according to usage requirements. At this time, the shapes of the fixing member 100 and the sliding member 200 are matched, the rotation of the sliding member 200 within the fixing member 100 is restricted, and the driving device 300 can drive the sliding member 200 to move along a preset trajectory.

[0030] The drive device 300 can be a hydraulic motor, a pneumatic motor, or an electric motor, as long as it can enable the sliding member 200 to slide in the receiving cavity 110.

[0031] Furthermore, the driving device 300 includes a driving part 310 connected to the fixing member 100 and a threaded sleeve 320 connected to the sliding member 200. The output end of the driving part 310 is connected to the lead screw 330, and the threaded sleeve 320 is threadedly connected to the lead screw 330. The driving part 310 can be a servo motor or a stepper motor, and the extension length of the sliding member 200 is controlled by controlling the angular displacement of the stepper motor or servo motor. At this time, the driving part 310 actuates the lead screw 330 to rotate, and the threaded engagement of the lead screw 330 and the threaded sleeve 320 drives the sliding member 200 to move along the axial direction of the lead screw 330, thereby causing the sliding member 200 to extend or retract from the receiving cavity 110.

[0032] Furthermore, the fixing member 100 is provided with a mounting base 150 for fixing the drive unit 310. The side of the mounting base 150 is fixed to the inner wall of the receiving cavity 110. The output end of the drive unit 310 is connected to the lead screw 330 through a coupling 340, which can accommodate the swinging of the sliding member 200 when it extends or retracts. The mounting base 150 is provided with a mounting cavity 151. The mounting cavity 151 is provided with a bearing 350 sleeved on the proximal end of the lead screw 330. At this time, the lead screw 330 is connected to the mounting base 150 through the bearing 350, which prevents the drive unit 310 from driving the lead screw 330 to rotate and bear the load, reduces the impact on the drive unit 310 when it drives the sliding member 200 to extend out of the receiving cavity 110 under load, and ensures the stable operation of the equipment. The inner cavity of the sliding member 200 is supported by a sleeve 230 by a rib plate 240. The lead screw 330 is movably disposed in the sleeve 230. The sleeve 230 limits and guides the lead screw 330, and also protects the lead screw 330.

[0033] A limit switch 400 is provided between the fixed member 100 and the sliding member 200 to limit the extension or retraction distance of the sliding member 200, preventing overshoot during extension or retraction and improving safety during use. The limit switch 400 can be a model from the prior art. When the sliding member 200 collides with the operating mechanism of the limit switch 400, such as a roller, lever, or button, the limit switch 400 sends a feedback signal to the control module, which then controls the sliding member 200 to stop moving.

[0034] Furthermore, the limit switches 400 are provided in two sets, located at the proximal and distal ends of the fixing member 100, respectively. A first notch 130 is provided on the bottom wall of the fixing member 100, and a limiting member 210 protruding from the outer wall of the sliding member 200 is provided. The contact end of the limit switch 400 can pass through the first notch 130 and contact the limiting member 210. In this case, the limit switch 400 at the bottom of the proximal end is used to limit the maximum retracted length of the sliding member 200, while the limit switch 400 at the bottom of the distal end is used to limit the maximum extended length of the sliding member 200. In this embodiment, the contact end of the limit switch 400 is set as a roller. When the slider 200 retracts to the limit member 210 and lifts the roller of the near end of the limit switch 400, the limit switch 400 sends a feedback signal to the control module, and the control module controls the drive device 300 to stop running. When the slider 200 extends to the limit member 210 and lifts the roller of the far end of the limit switch 400, the limit switch 400 sends a feedback signal, and the drive device 300 stops running.

[0035] A first rolling element 500 is provided between the upper side of the proximal end of the sliding member 200 and the cavity wall of the receiving cavity 110, and a second rolling element 600 is provided between the bottom of the distal end of the fixing member 100 and the sliding member 200. This converts the friction between the fixing member 100 and the sliding member 200 into rolling friction, reducing the friction surface and decreasing wear between them. Furthermore, after the sliding member 200 extends beyond the fixing member 100, under gravity, the inner end of the sliding member 200 tilts upward, and the side near the outer end tilts downward against the opening 120 side of the fixing member 100, bearing a large load on both sides. The first rolling element 500 and the second rolling element 600, respectively positioned on the upper and lower sides, further reduce frictional resistance, ensuring that the sliding member 200 can smoothly extend or retract from the fixing member 100.

[0036] Furthermore, the upper proximal sidewall of the slider 200 is provided with at least one second notch 220. The first rolling element 500 includes a first mounting block 510 fixed to the inner cavity of the slider 200. The first mounting block 510 is provided with a first roller assembly 520 that partially passes through the second notch 220 and contacts the cavity wall of the receiving cavity 110. The first mounting block 510 is used to mount the first roller assembly 520. The first roller assembly 520 includes at least one first roller. In this embodiment, the first roller assembly 520 consists of two first rollers arranged side by side along the width direction of the slider 200. The second notch 220 is used to make way for the first roller assembly 520, allowing it to extend out of the slider 200 and roll into contact with the inner wall of the receiving cavity 110.

[0037] Furthermore, at least one third notch 140 is provided on the distal bottom wall of the fixing member 100, and the second rolling member 600 includes an abutment 610 provided on the fixing member 100. In this embodiment, two sets of third notches 140 are provided and stacked on both axial sides of the abutment 610.

[0038] A second mounting block 620 is fixed to the abutment block 610 by bolts. A spacing adjustment component 630 is provided between the second mounting block 620 and the abutment block 610. The second mounting block 620 is provided with a second roller assembly 640 that partially passes through the third notch 140 and contacts the bottom wall of the sliding member 200. The second mounting block 620 can be provided with holes, and the abutment block 610 is provided with mounting screw holes 621. During installation, the second mounting block 620 and the abutment block 610 are pre-connected by bolts passing through the holes and connecting to the mounting screw holes 621. At this time, the bolts are not tightened. Then, the spacing adjustment component 630 is used to lift the second mounting block 620 to adjust the spacing between the second mounting block 620 and the abutment block 610. This adjusts the pressure between the second roller assembly 640 and the sliding member 200, ensuring that the second roller assembly 640 can roll and contact the sliding member 200 without putting excessive pressure on the sliding member 200, which would cause the top wall of the sliding member 200 to abut against the fixing member 100. After adjustment, tighten the bolts to secure the connection between the second mounting block 620 and the abutment block 610. At this time, as the sliding member 200 extends out of the fixing member 100, the opening 120 side of the fixing member 100 bears a greater load. The second rolling member 600 provides rigid support for the sliding member 200 and can also apply a larger reaction force to disperse the pressure on the receiving cavity 110.

[0039] Furthermore, the spacing adjustment component 630 includes set screws. Two sets of set screws are arranged side by side along the axial direction of the second mounting block 620. The second mounting block 620 is provided with a screw hole 621. The set screws are threaded into the screw hole 621 and their inner ends abut against the stop block 610. At this time, the spacing between the second mounting block 620 and the stop block 610 is adjusted by the two sets of set screws to adjust the pressure between the second roller group 640 and the sliding member 200. This allows the roller group 640 to make rigid contact with the sliding member 200 to provide stable support for the sliding member 200, while also ensuring that there is a certain gap between the top wall of the sliding member 200 and the inner wall of the fixing member 100, so that the sliding member 200 can move in the receiving cavity 110.

[0040] Furthermore, the third notch 140 is provided in two sets and symmetrically arranged on both sides of the abutment block 610. Each third notch 140 is provided with a second roller group 640, which includes two second rollers. At this time, the second roller groups 640 are evenly distributed on both sides of the abutment block 610, which can provide stable support for the sliding member 200 and improve the support effect.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible telescopic module, characterized in that, It includes a fixing member (100), a sliding member (200), and a driving device (300). The fixing member (100) has a receiving cavity (110) with a distal opening (120), the sliding member (200) passes through the receiving cavity (110), and the driving device (300) drives the sliding member (200) to move along the axial direction of the receiving cavity (110) so that the distal end of the sliding member (200) extends out or retracts from the opening (120); A limit switch (400) is provided between the fixing member (100) and the sliding member (200) to limit the extension or retraction distance of the sliding member (200); a first rolling member (500) is provided between the upper side of the proximal end of the sliding member (200) and the cavity wall of the receiving cavity (110), and a second rolling member (600) is provided between the bottom of the distal end of the fixing member (100) and the sliding member (200).

2. The flexible telescopic module according to claim 1, characterized in that, The limit switch (400) is provided in two sets and is located at the near end and far end of the fixing member (100) respectively. The bottom wall of the fixing member (100) is provided with a first notch (130). The sliding member (200) is provided with a limiting member (210) protruding from the outer wall of the sliding member (200). The contact end of the limit switch (400) can pass through the first notch (130) and contact the limiting member (210).

3. The flexible telescopic module according to claim 1, characterized in that, The upper sidewall of the proximal end of the slider (200) is provided with at least one second notch (220), and the first rolling element (500) includes a first mounting block (510) fixed to the inner cavity of the slider (200). The first mounting block (510) is provided with a first roller assembly (520) that partially passes through the second notch (220) and contacts the cavity wall of the receiving cavity (110).

4. The flexible telescopic module according to claim 1, characterized in that, The fixing member (100) has at least one third notch (140) on its far-end bottom wall. The second rolling member (600) includes a stop block (610) on the fixing member (100). A second mounting block (620) is fixed to the stop block (610) by bolts. A spacing adjustment member (630) is provided between the second mounting block (620) and the stop block (610). A second roller group (640) is provided on the second mounting block (620) that partially passes through the third notch (140) and contacts the bottom wall of the sliding member (200).

5. The flexible telescopic module according to claim 4, characterized in that, The spacing adjustment component (630) includes a set screw, and the second mounting block (620) is provided with a screw hole (621). The set screw is threaded into the screw hole (621) and its inner end abuts against the stop block (610).

6. The flexible telescopic module according to claim 4, characterized in that, The third notch (140) is provided in two sets and symmetrically arranged on both sides of the abutment block (610). Each of the third notches (140) is provided with a second roller group (640), and the second roller group (640) includes two second rollers.

7. The flexible telescopic module according to claim 1, characterized in that, The drive device (300) includes a drive part (310) connected to the fixing member (100) and a threaded sleeve (320) connected to the sliding member (200). The output end of the drive part (310) is connected to the lead screw (330), and the threaded sleeve (320) is threadedly connected to the lead screw (330).

8. The flexible telescopic module according to claim 7, characterized in that, The fixing member (100) is provided with a mounting seat (150) for fixing the drive unit (310). The output end of the drive unit (310) is connected to the lead screw (330) through a coupling (340). The mounting seat (150) is provided with a mounting cavity (151). The mounting cavity (151) is provided with a bearing (350) sleeved on the near end of the lead screw (330). The inner cavity of the sliding member (200) is supported by a rib plate (240) and the lead screw (330) is movably disposed in the sleeve (230).

9. The flexible telescopic module according to any one of claims 1-8, characterized in that, Both the fixing member (100) and the sliding member (200) are made of steel or aluminum profiles with a rectangular cross-section.

10. The flexible telescopic module according to any one of claims 1-8, characterized in that, The distal end of the slider (200) is also provided with a touch sensor (250).

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