A wire opener-closer mechanism

Abstract

This utility model discloses an opening and closing screw thread mechanism, including a cylindrical shell, a screw thread nut, and a rotating disk. An end cap is threadedly connected to the end of the cylindrical shell. The screw thread nut is installed in the cavity formed by the cylindrical shell and the end cap. The rotating disk is located in the cavity formed by the cylindrical shell and the end cap, on one side adjacent to the end cap of the screw thread nut. This utility model enables rapid disengagement of the screw thread nut from the lead screw, is easy to operate, and requires relatively little space when applied to equipment.

Description

Technical Field

[0001] This utility model relates to the opening and closing technology of a nut, specifically an opening and closing nut mechanism. Background Technology

[0002] The lead screw and nut mechanism rotates the lead screw under the drive of a power source, thereby displacing the nut on the lead screw. This transmission method has high precision, but its drawback is that the nut cannot quickly disengage from the lead screw. To achieve this, a split nut was developed. In its open or closed state, the split nut can disengage from the lead screw. However, existing split nuts on the market are two independent nut halves, which need to be connected by additional bolts during operation. To disengage the nut from the lead screw, the bolts need to be removed, requiring the assistance of a wrench. This type of split nut cannot truly achieve a quick disengagement from the lead screw, resulting in a long operation time. In addition, when this type of split nut is applied to equipment, the required operating space for removing the aforementioned bolts is also relatively large. Utility Model Content

[0003] The purpose of this invention is to provide an opening and closing screw nut mechanism that can quickly disengage from the lead screw, thereby solving the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An opening and closing screw nut mechanism includes a cylindrical housing, a screw nut, and a rotating disk;

[0006] The cylindrical shell has an end cap threadedly connected to its port. An arc-shaped limiting groove concentric with the end cap is provided on its side wall. A break is provided at the threaded port connected to the end cap, which communicates with the arc-shaped limiting groove. Two sets of positioning screw holes are provided on its outer wall, which are adjacent to the two ends of the arc-shaped limiting groove respectively. A positioning platform is provided inside the shell.

[0007] The nut is formed by two sets of symmetrical nut halves joined together and symmetrically installed in the cavity formed by the cylindrical shell and the end cap. The nut halves are semi-circular arc-shaped, and the two ends of the arc are planes parallel to their axial direction. The plane of one of the arc ends of the nut halves is in contact with the positioning platform surface. Cylindrical pins are symmetrically provided in the middle of the side of the two sets of nut halves adjacent to the end cap.

[0008] The indexing disk is located in the cavity formed by the cylindrical shell and the end cover and is located on one side of the end cover adjacent to the nut. The indexing disk is symmetrically provided with two sets of arc-shaped waist grooves that respectively cooperate with the two sets of cylindrical pins. The cylindrical pins are located in the inner groove of the arc-shaped waist grooves. The outer periphery of the indexing disk body is provided with an arc-shaped limiting groove that passes through the cylindrical shell and is bent and fits against the outer wall of the cylindrical shell. The bent arm is provided with positioning holes that can cooperate with the two sets of positioning screw holes respectively.

[0009] Furthermore, a thrust ring is provided between the inner side of the end cap and the indexing plate.

[0010] Furthermore, a wear-resistant steel sleeve is fitted on the outer circumference of the cylindrical pin.

[0011] Furthermore, as the bending arm swings along the arc-shaped limiting groove to both ends of the arc-shaped limiting groove, the positioning hole axially coincides with the two sets of positioning screw holes respectively.

[0012] Furthermore, the above solution also includes a positioning pin, which is used to pass through the positioning hole and be threaded into a positioning screw hole that coincides with the axial direction of the positioning hole.

[0013] The beneficial effects of this utility model are:

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is an exploded view of this utility model.

[0018] Figure 3 This is a structural diagram of the cylindrical shell of this utility model.

[0019] Figure 4 This is a structural diagram of the wire mother of this utility model.

[0020] Figure 5 This is a partial structural diagram of the nut of this utility model when it is in the open state.

[0021] Figure 6 This is a partial structural diagram of the nut of this utility model when it is in a closed state.

[0022] In the diagram: 1. Cylindrical shell, 2. End cap, 3. Arc-shaped limiting groove, 4. Positioning screw hole, 5. Positioning platform, 6. Threaded nut, 600, Threaded nut half, 7. Plane, 8. Cylindrical pin, 9. Indexing plate, 10. Arc-shaped waist groove, 11. Bending arm, 12. Positioning hole, 13. Positioning pin, 14. Thrust ring, 15. Wear-resistant steel sleeve. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] The following is combined with Figures 1-6 Detailed description of the opening and closing screw thread mechanism according to an embodiment of the present utility model:

[0025] Reference Figures 1-6 As shown, the opening and closing nut mechanism of this embodiment includes a cylindrical housing 1, a nut 6, and a rotating disk 9;

[0026] The cylindrical shell 1 has an end cap 2 threadedly connected to its end. An arc-shaped limiting groove 3 concentric with the end cap 2 is provided on its side wall. A break is provided at the threaded end of the shell that is connected to the end cap 2, which is connected to the arc-shaped limiting groove 3. Two sets of positioning screw holes 4 are provided on its outer wall, which are adjacent to the two ends of the arc-shaped limiting groove 3 respectively. A positioning platform 5 is provided inside the shell.

[0027] The nut 6 is formed by the joining of two sets of symmetrical nut halves 600 and is symmetrically installed in the cavity formed by the cylindrical shell 1 and the end cover 2. The nut halves 600 are semi-circular arc-shaped, and the two ends of the arc are planes 7 parallel to their axial direction. The plane 7 of one of the arc ends of the nut halves 600 is in contact with the table surface of the positioning platform 5 to position the nut halves 600 on the cylindrical shell 1, so as to keep the central axis of the two sets of nut halves 600 at the same height as the central axis of the cylindrical shell 1. Cylindrical pins 8 are symmetrically provided in the middle of the side adjacent to the end cover 2 of the two sets of nut halves 600.

[0028] The indexing disk 9 is located within the cavity formed by the cylindrical shell 1 and the end cap 2, and is situated on one side of the end cap 2 adjacent to the nut 6. The indexing disk 9 has two sets of symmetrically arranged arc-shaped grooves 10 that respectively engage with two sets of cylindrical pins 8. The cylindrical pins 8 are located within the inner grooves of the arc-shaped grooves 10. The outer periphery of the indexing disk 9 has a bent arm 11 that passes through the arc-shaped limiting groove 3 on the cylindrical shell 1 and is bent and fitted against the outer wall of the cylindrical shell 1. When the indexing disk 9 is installed into the cylindrical shell 1, the bent arm 11 on the indexing disk 9 enters the arc-shaped limiting groove 3 from the break at the threaded end on the cylindrical shell 1. The bent arm 11 has a detachable... The positioning holes 12 that mate with the two sets of positioning screw holes 4 are specifically engaged as follows: when the bending arm 11 swings to both ends of the arc-shaped limiting groove 3, the positioning holes 12 will swing to both ends of the arc-shaped limiting groove 3 along with the bending arm 11 along the limiting guide of the arc-shaped limiting groove 3. The positioning holes 12 will then axially coincide with the two sets of positioning screw holes 4. When the positioning holes 12 and the positioning screw holes 4 coincide, the positioning pin 13 will be used. The positioning pin 13 passes through the positioning hole 12 and is threaded to the positioning screw hole 4 that coincides with the positioning hole 12, thereby achieving the positioning of the bending arm 11 and thus the positioning of the indexing disk 9.

[0029] During the swinging process, the bending arm 11 drives the indexing disk 9 to rotate. When the indexing disk 9 rotates, the two sets of arc-shaped waist grooves 10 on its body will rotate, causing the distance between the two sets of cylindrical pins 8 that it mates with to change. When the distance between the two sets of cylindrical pins 8 increases, the distance between the two sets of screw nut halves 600 will also increase, causing the screw nut 6 to open and the outer perimeter of the structure to increase. At this time, the screw nut 6 can quickly disengage from the screw. When the bending arm 11 swings to both ends of the arc-shaped limiting groove 3, the positioning holes 12 are axially aligned with the two sets of positioning screw holes 4 respectively. At this time, the state of the indexing disk 9 when the bending arm 11 is at both ends of the arc-shaped limiting groove 3 is as follows. Figure 5 , Figure 6As shown, the words "open" and "closed" can be marked next to the two sets of positioning screw holes 4 respectively. When the bending arm 11 swings one end of the arc-shaped limiting groove 3, if the word "open" is marked next to the positioning screw hole 4 that coincides with the axial direction of the positioning hole 12, it indicates that the screw nut 6 is in the open state. At this time, the transmission relationship between the screw nut 6 and the corresponding screw is released. Conversely, if the word "closed" is marked next to the positioning screw hole 4 that coincides with the axial direction of the positioning hole 12, it indicates that the screw nut 6 is in the closed state. At this time, the transmission relationship between the screw nut 6 and the corresponding screw is maintained. When the bending arm 11 swings to either end of the arc-shaped limiting groove 3, a positioning pin 13 can be used to maintain the state of the lead screw nut 6. The positioning pin 13 passes through the positioning hole 12 on the bending arm 11 and is threaded into the positioning screw hole 4 that coincides with the axial direction of the positioning hole 12. At this time, the position of the bending arm 11 is locked, the position of the bending arm 11 is locked, the indexing disk 9 cannot rotate, and the state of the lead screw nut 6 is fixed, so the structural transmission relationship between it and the corresponding lead screw can be maintained. As can be seen from the above description, by swinging the position of the bending arm 11, the opening and closing of the lead screw nut 6 can be quickly controlled, and the lead screw nut 6 can also quickly disengage from the lead screw. The operation is convenient, and when applied to equipment, the reserved size of the operating space is relatively small.

[0030] As described above, the two arc-shaped ends of the nut half 600 are designed as planes 7. The plane 7 of one arc-shaped end fits into the platform surface of the positioning platform 5, while the other arc-shaped end is also designed as a plane 7. The purpose of this is to reduce its height and increase the space between it and the inner wall of the cylindrical shell 1, so as to prevent the two sets of nut half 600 from being blocked by the inner wall of the cylindrical shell 1 when they are separated from each other inside the cylindrical shell 1.

[0031] In this embodiment, a thrust ring 14 is provided between the inner side of the end cover 2 and the indexing disk 9. The thrust ring 14 is made of nylon material, which can reduce component wear caused by the rotation of the indexing disk 9. In addition, the presence of the thrust ring 14 can also reduce dust from entering the cavity formed between the end cover 2 and the cylindrical housing 1 through the inner hole, and can also prevent the axial movement of other components.

[0032] In this embodiment, when the indexing disk 9 rotates, the two sets of arc-shaped waist grooves 10 on its body will cause the distance between the two sets of cylindrical pins 8 that cooperate with it to change. During this process, friction will be generated between the arc-shaped waist grooves 10 and the cylindrical pins 8. In order to increase the wear resistance of the cylindrical pins 8, a wear-resistant steel sleeve 15 is fitted on the outer periphery of the cylindrical pins 8.

[0033] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A mechanism for opening and closing a nut, characterized in that, include: A cylindrical shell (1) has an end cap (2) threadedly connected to its port. An arc-shaped limiting groove (3) concentric with the end cap (2) is provided on its side wall. A break is provided at the threaded port connected to the end cap (2) that communicates with the arc-shaped limiting groove (3). Two sets of positioning screw holes (4) are provided on its outer wall, which are adjacent to the two ends of the arc-shaped limiting groove (3). A positioning platform (5) is provided inside the shell. The nut (6) is formed by two sets of symmetrical nut halves (600) joined together and symmetrically installed in the cavity formed by the cylindrical shell (1) and the end cover (2). The nut halves (600) are semi-circular arc-shaped, and the two ends of the arc are planes (7) parallel to their axial direction. The plane (7) of one of the arc ends of the nut halves (600) is in contact with the table surface of the positioning platform (5). Cylindrical pins (8) are symmetrically provided in the middle of the side of the two sets of nut halves (600) adjacent to the end cover (2). The indexing disk (9) is located in the cavity formed by the cylindrical shell (1) and the end cover (2) and is located on one side of the end cover (2) adjacent to the nut (6). The indexing disk (9) is symmetrically provided with two sets of arc-shaped waist grooves (10) that respectively cooperate with two sets of cylindrical pins (8). The cylindrical pins (8) are located in the inner groove of the arc-shaped waist grooves (10). The outer periphery of the indexing disk (9) is provided with an arc-shaped limiting groove (3) that passes through the cylindrical shell (1) and is bent and attached to the outer wall of the cylindrical shell (1). The bent arm (11) is provided with positioning holes (12) that can cooperate with two sets of positioning screw holes (4) respectively.

2. The opening and closing nut mechanism according to claim 1, characterized in that... A thrust ring (14) is provided between the inner side of the end cap (2) and the rotating disk (9).

3. The opening and closing nut mechanism according to claim 1, characterized in that... The cylindrical pin (8) is fitted with a wear-resistant steel sleeve (15) on its outer circumference.

4. The opening and closing nut mechanism according to claim 1, characterized in that... When the positioning hole (12) swings along the arc-shaped limiting groove (3) to both ends of the arc-shaped limiting groove (3) as the bending arm (11) swings, it coincides axially with the two sets of positioning screw holes (4).

5. The opening and closing nut mechanism according to claim 4, characterized in that... It also includes a locating pin (13), which is used to pass through the locating hole (12) and is threaded to a locating screw hole (4) that is axially coincident with the locating hole (12).

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