A screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder

Abstract

This utility model relates to the field of electric telescopic cylinder technology, specifically a screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder. It mainly includes a telescopic cylinder housing, with a telescopic connector connected to the outer side of the housing. A locking block is fixedly connected to the bottom of the housing. The locking positioning assembly includes a screw sleeve, with end locking blocks at both ends of the inner side of the sleeve. A turning ring is connected to the inner side of each end locking block. The guide adjustment assembly includes a roller groove, with a roller assembly connected to the inner side of the groove. This screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder improves the stability of the planetary screw pair installation by using locking and limiting blocks at the ends for locking and fixing during the installation of the planetary screw pair and the screw sleeve. It also includes anti-displacement end locking blocks to limit the movement at both ends. The inner side of the end locking blocks is fastened by the threaded connection of the turning ring, thus improving the stability of the planetary screw pair installation, reducing the probability of loosening, and ensuring processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electric telescopic cylinder technology, specifically a lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder. Background Technology

[0002] The dexterous hand achieves precise movements using an electric telescopic cylinder. Powerful and responsive, it can extend and retract flexibly as needed, precisely controlling displacement and force, giving the robotic arm highly anthropomorphic fine operational capabilities. It efficiently completes tasks such as grasping and assembly in complex situations. Inside the telescopic cylinder, a lead screw drive is used, and the lead screw needs to be positioned by a positioning mechanism.

[0003] The existing screw positioning structure of electric telescopic cylinders uses plugs at both ends for direct filling during installation, and the rubber resistance is used to achieve a stable effect. Although the structure is relatively simple and stable, the rubber rings are difficult to limit the position and are prone to deformation during filling, resulting in positional displacement. This causes vibration during screw transmission, which in turn affects the stability of the positioning structure, impacting the efficiency of subsequent screw transmission and reducing the practicality of the telescopic cylinder. Optimization and improvement are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder, so as to solve the problem that when positioning the lead screw inside the electric telescopic cylinder as described in the background art, it is difficult to install stably, and it is easy to loosen, which affects the transmission efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder, comprising: a telescopic cylinder housing, a telescopic connector connected to the outer side of the telescopic cylinder housing, a locking block fixedly connected to the bottom end of the telescopic cylinder housing, and further comprising a locking positioning component and a guide adjustment component:

[0006] The snap-fit ​​positioning component is disposed inside the telescopic cylinder housing. The snap-fit ​​positioning component includes a lead screw sleeve, and end blocks are provided at both ends of the inner side of the lead screw sleeve. A turning ring is connected to the inner side of the end blocks. The snap-fit ​​positioning component is used for positioning the lead screw. The guide adjustment component is disposed inside the snap-fit ​​block. The guide adjustment component includes a roller groove, and a roller assembly is connected to the inner side of the roller groove. The guide adjustment component is used for guiding and stabilizing the lead screw drive.

[0007] Preferably, the roller groove is fixedly connected to the inner side of the snap-fit ​​block, and a roller assembly is installed on the inner side of the roller groove.

[0008] Preferably, a rubber strip is connected to the inner side of the snap-fit ​​block, and a snap-fit ​​groove adapted to the rubber strip is provided on the inner side.

[0009] Preferably, the lead screw sleeve is disposed at the top of the roller assembly, a planetary lead screw pair is connected to the inner side of the lead screw sleeve, and a guide block is connected to the outer wall of the lead screw sleeve.

[0010] Preferably, a positioning head is fixedly connected to one side of the planetary screw pair, and a locking limit block is connected to one outer end of the positioning head.

[0011] Preferably, a rubber ring is connected to the inner wall of the end block, and a mounting groove adapted to the rubber ring is formed inside the outer wall of the end block.

[0012] Preferably, a rotating ring is fixedly connected to one side of the end block, and an inner compression pad is connected to the outer side of the rotating ring.

[0013] Preferably, the outer side of the end block is provided with an anti-slip actuation groove, and six anti-slip actuation grooves are provided.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model improves the stability of planetary screw assembly installation by setting a locking and limiting block at the end for locking and fixing during the installation of planetary screw pair and screw sleeve, and also sets an anti-displacement end locking block to limit the two ends. The inner side of the end locking block is fastened by the threaded connection of the screw ring, which further improves the stability of planetary screw pair installation, reduces the probability of loosening, and ensures processing efficiency.

[0016] When the lead screw sleeve is driven, a roller assembly is set at the bottom for support. A snap-fit ​​block is set at the bottom of the roller assembly to ensure the smoothness of the lead screw sleeve during transmission, reduce the vibration of the telescopic cylinder, and thus ensure the installation stability of the planetary lead screw pair. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the partially separated three-dimensional structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the partially separated three-dimensional structure of the snap-fit ​​positioning component of this utility model;

[0020] Figure 4 This is a schematic diagram of the partially separated three-dimensional structure of the guide adjustment component of this utility model.

[0021] In the diagram: 1. Telescopic cylinder housing; 2. Telescopic connector; 3. Snap-fit ​​block; 4. Roller groove; 5. Screw sleeve; 6. Guide block; 7. Planetary screw pair; 8. Positioning head; 9. End snap-fit ​​block; 10. Mounting groove; 11. Rubber ring; 12. Anti-slip actuation groove; 13. Tightening ring; 14. Inner compression pad; 15. Snap-fit ​​limiting block; 16. Snap-fit ​​groove; 17. Rubber strip; 18. Roller assembly. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] like Figure 1 - Figure 4 As shown, this application provides a screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder, including: a telescopic cylinder housing 1, a telescopic connector 2 connected to the outer side of the telescopic cylinder housing 1, and a snap-fit ​​block 3 fixedly connected to the bottom end of the telescopic cylinder housing 1;

[0025] The telescopic cylinder housing 1 is provided with a snap-fit ​​positioning component on its inner side. The snap-fit ​​positioning component includes a lead screw sleeve 5. Both ends of the inner side of the lead screw sleeve 5 are provided with end blocks 9. The inner side of the end blocks 9 is connected to a turning ring 13. The snap-fit ​​positioning component is used for positioning the lead screw.

[0026] Specifically, such as Figure 3 As shown, a positioning head 8 is fixedly connected to one side of the planetary screw assembly 7. A locking and limiting block 15 is connected to one end of the outer side of the positioning head 8. The positioning head 8 passes through the end locking block 9, and the outer side is locked and limited by the locking and limiting block 15 for one fixation.

[0027] Specifically, such as Figure 3 As shown, a rubber ring 11 is connected to the inner wall of the end block 9. A mounting groove 10 adapted to the rubber ring 11 is provided inside the outer wall of the end block 9. The mounting groove 10 is provided to improve the tightness of the rubber ring 11 installation and avoid positional displacement during insertion.

[0028] Specifically, such as Figure 3As shown, a screwing ring 13 is fixedly connected to one side of the end block 9, and an inner compression pad 14 is connected to the outside of the screwing ring 13. While the end block 9 is being squeezed and fixed, the screwing ring 13 is also provided on the inside for screwing and threading, which improves the fixing effect. The inner compression pad 14 connected on the inside improves the stability of the connection.

[0029] Specifically, such as Figure 3 As shown, the outer side of the end block 9 is provided with an anti-slip actuation groove 12. There are six anti-slip actuation grooves 12. Providing multiple anti-slip actuation grooves 12 can improve the adjustment efficiency of the end block 9.

[0030] The inner side of the snap-fit ​​block 3 is provided with a guide adjustment component, which includes a roller groove 4. The inner side of the roller groove 4 is connected to a roller group 18. The guide adjustment component is used for the guide stability adjustment of the screw drive.

[0031] Specifically, such as Figure 4 As shown, the roller groove 4 is fixedly connected to the inner side of the snap-fit ​​block 3. The inner side of the roller groove 4 is equipped with a roller assembly 18. The roller groove 4 is used to install the roller assembly 18. The roller assembly 18 fits against the bottom wall of the lead screw sleeve 5, adjusting the sliding of the lead screw sleeve 5 to rolling, thereby reducing the friction of movement.

[0032] Specifically, such as Figure 4 As shown, a rubber strip 17 is connected to the inner side of the snap-fit ​​block 3, and a snap-fit ​​groove 16 adapted to the rubber strip 17 is opened on the inner side. The matching snap-fit ​​of the rubber strip 17 can improve the stability of the connection between the snap-fit ​​block 3 and the telescopic cylinder housing 1.

[0033] Specifically, such as Figure 2 As shown, the lead screw sleeve 5 is located at the top of the roller assembly 18. The inner side of the lead screw sleeve 5 is connected to the planetary lead screw pair 7, and the outer wall of the lead screw sleeve 5 is connected to the guide block 6. The guide block 6 is used for guiding and limiting the lead screw sleeve 5 during transmission. The rotation of the planetary lead screw pair 7 drives the lead screw sleeve 5 to transmit power.

[0034] In this embodiment: when installing the planetary screw pair 7 and the screw sleeve 5, a locking and limiting block 15 is provided at the end for locking and fixing, and an anti-displacement end locking block 9 is also provided to limit the two ends. The inner side of the end locking block 9 is fastened by the threaded connection of the screw ring 13, which further improves the stability of the planetary screw pair 7 installation and reduces the probability of loosening. When the screw sleeve 5 is driven, a roller group 18 is provided at the bottom for support. A stable locking block 3 is provided at the bottom of the roller group 18 to ensure the smoothness of the screw sleeve 5 during transmission and reduce the vibration of the telescopic cylinder.

[0035] Specifically, this solution involves installing the planetary screw pair 7 and screw sleeve 5 of the dexterous hand load-bearing electric telescopic cylinder. The positioning head 8 at the end of the planetary screw pair 7 is secured with a locking limit block 15 for pre-fixation. Anti-displacement end blocks 9 are also installed on both sides to position and limit the multiple planetary screws of the planetary screw pair 7. Then, fingers are inserted into the anti-slip groove 12 to rotate and adjust the end blocks 9, allowing the inner side of the end blocks 9 to be tightened via the threaded connection of the turning ring 13. The inner compression pad 14 of the connection enhances the tightness of the connection, further improving the stability of the planetary screw pair 7 installation and reducing the probability of loosening. When the screw sleeve 5 is in operation, a roller assembly 18 is installed at the bottom for rolling support, reducing transmission friction. A stable locking block 3 is installed at the bottom of the roller assembly 18 to ensure the smoothness of the screw sleeve 5 during transmission, reducing cylinder vibration. With a low-vibration electric telescopic cylinder, the installation stability of the internal planetary screw pair 7 is also less likely to be affected.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0037] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder, comprising: A telescopic cylinder housing (1), wherein a telescopic connector (2) is connected to the outer side of the telescopic cylinder housing (1), and a snap-fit ​​block (3) is fixedly connected to the bottom end of the telescopic cylinder housing (1), characterized in that it further includes: A snap-fit ​​positioning assembly is provided on the inner side of the telescopic cylinder housing (1). The snap-fit ​​positioning assembly includes a lead screw sleeve (5). Both ends of the inner side of the lead screw sleeve (5) are provided with end blocks (9). The inner side of the end blocks (9) is connected to a turning ring (13). The snap-fit ​​positioning assembly is used for positioning the lead screw. A guide adjustment assembly is disposed inside the snap-fit ​​block (3). The guide adjustment assembly includes a roller groove (4), and a roller assembly (18) is connected to the inner side of the roller groove (4). The guide adjustment assembly is used for guide and stability adjustment of the screw drive.

2. The lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder according to claim 1, characterized in that, The roller groove (4) is fixedly connected to the inner side of the snap-fit ​​block (3), and a roller assembly (18) is installed on the inner side of the roller groove (4).

3. The lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder according to claim 1, characterized in that, The inner side of the snap-fit ​​block (3) is connected to a rubber strip (17), and the inner side is provided with a snap-fit ​​groove (16) that is adapted to the rubber strip (17).

4. The lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder according to claim 2, characterized in that, The lead screw sleeve (5) is located at the top of the roller assembly (18), and a planetary lead screw pair (7) is connected to the inner side of the lead screw sleeve (5). A guide block (6) is connected to the outer wall of the lead screw sleeve (5).

5. The lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder according to claim 4, characterized in that, A positioning head (8) is fixedly connected to one side of the planetary screw pair (7), and a locking limit block (15) is connected to one outer end of the positioning head (8).

6. The lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder according to claim 1, characterized in that, The outer wall of the end block (9) is connected to a rubber ring (11), and the outer wall of the end block (9) is provided with a mounting groove (10) that is adapted to the rubber ring (11).

7. The lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder according to claim 1, characterized in that, A rotating ring (13) is fixedly connected to one side of the end block (9), and an inner compression pad (14) is connected to the outer side of the rotating ring (13).

8. The lead screw positioning structure for a dexterous hand load-bearing electric telescopic cylinder according to claim 1, characterized in that, The outer side of the end block (9) is provided with an anti-slip actuation groove (12), and there are six anti-slip actuation grooves (12).

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