Translation sliding block structure for lead screw driving device

Abstract

The utility model provides a translation sliding block structure for a lead screw driving device, which is characterized by comprising a nut nested on a lead screw, staggered connecting pieces capable of sliding relatively are arranged at the two ends of the nut, an outer rail adapter capable of sliding relatively is arranged at one end of each staggered connecting piece, and the outer rail adapter is arranged at the other end of each staggered connecting piece. A load connecting piece is arranged at one end of the outer rail adapter, a fixed connecting piece and a dislocation connecting piece are arranged on the outer side of the nut, the inner diameter of the outer rail adapter and the inner diameter of the load connecting piece are both larger than the diameter of the lead screw and the inner diameter of the nut, and a cross sliding block coupler structure is formed among the nut, the outer rail adapter and the dislocation connecting piece. According to the utility model, the influence of non-concentric installation between the installation section bar and the screw rod and deflection deformation of the screw rod on the movement of the nut can be eliminated, the problem that the nut is blocked or stuck in the movement process is solved, and a loaded object can maintain translation along a track on the installation section bar.

Description

[Technical field]

[0001] The utility model relates to the technical field of screw transmission, in particular to a translational sliding block structure of a screw drive device. [Background technology]

[0002] Screw drive structures are often used in automatic transmission fields that require parallel movement of objects, such as automatic sliding doors, automatic screens, automatic curtains, and mechanical modules.

[0003] In the actual application of the screw transmission structure, the screw needs to be fixed in the mounting profile. The mounting profile supports both ends of the screw and also provides track constraints. In the existing screw transmission structure, the nut directly contacts the track of the mounting profile. The nut on the screw drives the load object and moves as parallel as possible along the track on the mounting profile. However, due to the tolerance of parts and the error caused by the installation of the screw, the axis of the screw and the center line of the mounting profile are easily deviated after installation. The track gap between the mounting profile and the screw is not equal, and it is difficult for the nut to pass smoothly through a narrow area, which can easily cause the nut to get stuck or stuck during movement.

[0004] Moreover, when the length of the screw rod is long, the screw rod itself will produce deflection deformation due to processing problems and the influence of gravity, affecting the operation of the screw transmission structure, making it difficult to ensure that the nut drives the load object to move parallely. The track gap between the mounting profile and the screw rod will also be affected by the deflection deformation of the screw rod, causing the nut to get stuck or jammed during movement.

[0005] In order to solve the above problems, the utility model provides a translation slider structure for a screw drive device. [Utility Model Content]

[0006] In order to eliminate the influence of the eccentricity between the mounting profile and the screw and the deflection deformation of the screw on the movement of the nut, solve the problem of the nut getting stuck or stuck during movement, and enable the loaded object to maintain translation along the track on the mounting profile, the utility model provides a translation slider structure for a screw drive device.

[0007] In order to solve the above problems, the utility model provides the following technical solutions:

[0008] A translational slider structure for a screw drive device, characterized in that it includes a nut nested on a screw, offset connectors are provided at both ends of the nut so as to be relatively slidable, an outer track adapter is provided at one end of the offset connector away from the nut so as to be relatively slidable and used to abut against an external mounting profile to leave an offset gap for the offset connector, a load connector is provided at one end of the outer track adapter away from the nut so as to be used to connect an external translational object, a fixed connecting piece is provided on the outside of the nut so as to be fixedly connected to the load connectors at both ends, the inner diameters of the offset connector, the outer track adapter and the load connector are all larger than the diameter of the screw and the inner diameter of the nut, and a cross slider coupling structure is formed between the nut, the outer track adapter and the offset connector.

[0009] The translation slider structure for the screw drive device as described above is characterized in that the outer track adapter, the offset connector and the nut are all cylindrical, and the outer diameter of the outer track adapter is larger than the outer diameter of the offset connector and the outer diameter of the nut.

[0010] The translational slider structure for the screw drive device as described above is characterized in that: first offset blocks are symmetrically provided at both ends of the nut, a second offset block is provided at one end of the outer track adapter close to the offset connector, and first and second slide grooves for clamping the first and second offset blocks are respectively provided at both ends of the offset connector, and the extension directions of the first and second slide grooves are perpendicular to each other.

[0011] The translation slider structure for the screw drive device as described above is characterized in that: a plurality of first latching teeth are provided at one end of the outer track adapter close to the load connector, and second latching teeth that engage with the first latching teeth are correspondingly provided at one end of the load connector close to the outer track adapter.

[0012] The translation slider structure for the screw drive device as described above is characterized in that a connecting plate is provided on the load connecting member, and a plurality of fixing holes are provided on the fixing connecting plate.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model is used for the translational sliding block structure of the screw drive device, which is provided with a nut, a dislocation connecting piece and an outer track adapter to form a cross slider coupling structure, the outer track adapter abuts against the external mounting profile, and can slide and translate along the track on the mounting profile, while the nut and the dislocation connecting piece do not contact the mounting profile, when the nut moves along the screw driven by the screw, even if the axis of the screw and the center line of the mounting profile deviate after installation, the track gap between the mounting profile and the screw is not equal, when the nut passes through a narrow area, the outer track adapter passes through the dislocation The connecting piece and the nut are slidingly dislocated, so that the outer track adapter continues to slide along the track on the mounting profile, and the nut moves on the screw rod, thereby avoiding the nut from getting stuck or jammed during movement, allowing the nut to pass smoothly while ensuring that the loaded object maintains translation. Similarly, even if the screw rod itself undergoes deflection deformation due to processing problems and the influence of gravity, the nut and the outer track adapter can solve the problem of the nut getting stuck or jammed during movement through dislocation, so that the object fixedly connected to the load connecting piece can maintain translation along the track on the mounting profile under the push of the nut.

Brief Description of the Drawings

[0015] Figure 1 is a stereogram of the translation slider structure;

[0016] Figure 2 is a top view of the translation slider structure;

[0017] Figure 3 yes Figure 2 Sectional view in the AA direction;

[0018] Figure 4 is a first exploded view of the translation slider structure;

[0019] Figure 5 is a second exploded view of the translation slider structure;

[0020] Figure 6 is an application structure reference diagram of the translation slider structure;

[0021] In the figure: 1 is a nut; 2 is an offset connector; 3 is an outer track adapter; 4 is a load connector; 5 is a connecting plate; 6 is a fixed connecting piece; 7 is a first offset block; 8 is a second offset block; 9 is a first slide groove; 10 is a second slide groove; 11 is a first tooth; 12 is a second tooth; 13 is a fixing hole. [Specific implementation method]

[0022] The technical features of the present invention are further described in detail below with reference to the accompanying drawings so that those skilled in the art can understand them.

[0023] A translation slider structure for a screw drive device, such as Figure 1 to Figure 6As shown, it includes a nut 1 embedded in a screw rod, and offset connectors 2 are provided at both ends of the nut 1 so as to be relatively slidable. An outer track adapter 3 for abutting against an external mounting profile to leave a misalignment gap for the offset connector 2 is provided at one end of the offset connector 2 away from the nut 1 so as to be relatively slidable. The outer track adapter 3 abuts against the external mounting profile so that the outer track adapter 3 is constrained by the track and slides and translates along the track on the mounting profile, while the nut 1 and the offset connector 2 do not contact the mounting profile, and a for connecting to the external mounting profile is provided at one end of the outer track adapter 3 away from the nut 1. The load connector 4 of the translational object is provided with a fixed connecting piece 6 on the outer side of the nut 1 for fixing the load connector 4 at both ends. The inner diameters of the dislocation connector 2, the outer track adapter 3 and the load connector 4 are all larger than the diameter of the screw rod and the inner diameter of the nut 1, so as to leave a dislocation gap for the dislocation connector 2 and the outer track adapter 3. A cross slider coupling structure is formed between the nut 1, the outer track adapter 3 and the dislocation connector 2. The cross slider coupling structure can prevent the nut 1 from rotating with the screw rod while sliding and dislocating, so as to ensure the normal movement of the nut 1.

[0024] Specifically, Figure 6 As shown, the nut 1 moves along the screw rod driven by the screw rod. When the axis of the screw rod and the center line of the mounting profile deviate after installation, the track gap between the mounting profile and the screw rod is not equal. When the nut 1 passes through a narrow area, the outer track adapter 3 slides and dislocates with the nut 1 through the offset connector 2, so that the outer track adapter 3 continues to slide along the track on the mounting profile, and the nut 1 moves on the screw rod, thereby avoiding the nut 1 from getting stuck or stuck during the movement, allowing the nut 1 to pass smoothly, and at the same time ensuring that the object fixedly connected to the load connector 4 maintains translation along the track on the mounting profile under the push of the nut 1; similarly, even if the screw rod itself produces deflection deformation due to processing problems and the influence of gravity, the nut 1 and the outer track adapter 3 can solve the problem of the nut 1 getting stuck or stuck during the movement through dislocation, so as to ensure that the loaded object maintains translation.

[0025] Specifically, the outer track adapter 3, the offset connector 2 and the nut 1 are all cylindrical, and the outer diameter of the outer track adapter 3 is larger than the outer diameter of the offset connector 2 and the outer diameter of the nut 1, so as to ensure that the outer track adapter 3 is constrained by the track and slides and translates along the track on the mounting profile, while the nut 1 and the offset connector 2 do not contact the mounting profile, so that there is an offset space between the outer track adapter 3 and the nut 1.

[0026] In addition, a first misaligned block 7 is symmetrically provided at both ends of the nut 1, a second misaligned block 8 is provided at one end of the outer track adapter 3 close to the misaligned connector 2, and a first slide groove 9 and a second slide groove 10 for inserting the first misaligned block 7 and the second misaligned block 8 are respectively provided at both ends of the misaligned connector 2. The extension directions of the first slide groove 9 and the second slide groove 10 are perpendicular to each other. The first slide groove 9 and the second slide groove 10 respectively provide transverse and longitudinal misaligned directions, so that multi-angle misaligned positions can be generated between the outer track adapter 3 and the nut 1.

[0027] Specifically, a plurality of first latching teeth 11 are provided at one end of the outer track adapter 3 close to the load connector 4, and second latching teeth 12 correspondingly engaged with the first latching teeth 11 are provided at one end of the load connector 4 close to the outer track adapter 3. The first latching teeth 11 and the second latching teeth 12 are engaged with each other, which can ensure that relative rotation does not occur between the outer track adapter 3 and the screw rod, thereby preventing the nut 1 from rotating with the screw rod.

[0028] In addition, a connecting plate 5 is provided on the load connector 4, and a plurality of fixing holes 13 are provided on the fixing connecting plate 6. The two load connectors 4 are fixedly connected by screwing screws into the fixing holes 13 and the screw holes of the connecting plate 5, so that the offset connectors 2 at both ends of the nut 1, the outer rail adapter 3 and the load connector 4 are squeezed together.

[0029] The embodiments described in the present invention are merely descriptions of preferred implementation modes of the present invention and are not limited to the precise structures described above and shown in the accompanying drawings. Various modifications and changes can be made without departing from the scope thereof. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should all fall within the protection scope of the present invention.

Claims

1. A translation slider structure for a screw drive device, characterized in that: The invention comprises a nut (1) embedded in a screw rod, and dislocation connectors (2) are provided at both ends of the nut (1) so as to be relatively slidable, and an outer track adapter (3) is provided at one end of the dislocation connector (2) away from the nut (1) so as to be relatively slidable and used for abutting against an external mounting profile to leave a dislocation gap for the dislocation connector (2), and a load connector (4) is provided at one end of the outer track adapter (3) away from the nut (1) so as to be relatively slidable and used for connecting to an external translational object, and a fixed connecting piece (6) is provided on the outside of the nut (1) so as to be fixedly connected to the load connectors (4) at both ends, and the inner diameters of the dislocation connector (2), the outer track adapter (3) and the load connector (4) are all larger than the diameter of the screw rod and the inner diameter of the nut (1), and a cross slider coupling structure is formed between the nut (1), the outer track adapter (3) and the dislocation connector (2).

2. The translation slider structure for a screw drive device according to claim 1, characterized in that: The outer track adapter (3), the offset connector (2) and the nut (1) are all cylindrical, and the outer diameter of the outer track adapter (3) is greater than the outer diameter of the offset connector (2) and the outer diameter of the nut (1).

3. The translation slider structure for a screw drive device according to claim 1, characterized in that: A first offset block (7) is symmetrically arranged at both ends of the nut (1); a second offset block (8) is arranged at one end of the outer rail adapter (3) close to the offset connector (2); a first slide groove (9) and a second slide groove (10) for inserting the first offset block (7) and the second offset block (8) are respectively arranged at both ends of the offset connector (2); and the extension directions of the first slide groove (9) and the second slide groove (10) are perpendicular to each other.

4. The translation slider structure for a screw drive device according to any one of claims 1 to 3, characterized in that: A plurality of first latching teeth (11) are provided at one end of the outer track adapter (3) close to the load connector (4), and second latching teeth (12) which engage with the first latching teeth (11) are correspondingly provided at one end of the load connector (4) close to the outer track adapter (3).

5. The translation slider structure for a screw drive device according to claim 1, characterized in that: A connecting plate (5) is provided on the load connecting piece (4), and a plurality of fixing holes (13) are provided on the fixing connecting piece (6).

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