A precision shaft for easy positioning

Abstract

The utility model discloses a kind of precision shafts convenient for positioning, belong to precision shaft field, including precision shaft body and connecting rod, the precision shaft body one end is fixedly connected with fixed column, the side surface of fixed column is fixedly connected with multiple positioning blocks, the other end of fixed column is fixedly connected with plug rod, plug rod is equipped with insertion hole, the connecting rod is equipped with No. One insertion slot, multiple grooves, No. Two insertion slots, two sliding slots and two groups of limiting slots;By setting the setting of positioning block and groove, not only the positioning of precision shaft body and connecting rod when connecting is facilitated, but also the tightness between precision shaft body and connecting rod can be strengthened, so that it becomes a whole, to strengthen the strength of precision shaft body and connecting rod, then by the setting of elastic sheet and limiting slot etc. thing, plug block can be limited, prevent plug block from moving out insertion hole under the action of centrifugal force in use process, so that precision shaft body and connecting rod are separated and fall off, affect the use of device.

Description

Technical Field

[0001] This utility model relates to the field of precision shaft technology, specifically a precision shaft that is easy to position. Background Technology

[0002] Precision shafts are typically connected to motors. When in use, the motor drives the precision shaft to rotate. The precision shaft is connected to a connector, which in turn drives the connector to rotate. The connector is usually a gear or a rod-shaped object, and it is usually detachable.

[0003] Currently, most precision shafts are connected and fixed to connectors using threaded connections or locking blocks. However, threaded connections are prone to loosening during device use. When using locking blocks, one end of the precision shaft needs to be inserted into the connecting rod. Since the precision shaft and connecting rod are not transparent, the locking block or slot cannot be seen after the precision shaft is inserted into the connecting rod for positioning. At this time, misalignment can easily occur between the locking block and the slot, preventing them from locking together directly and requiring adjustment. Furthermore, locking blocks are mostly moved and locked into the slot by springs. However, when the precision shaft rotates, centrifugal force is generated, which causes the locking block to squeeze the spring and move outward. Over time, the locking block may move out of the slot, causing the precision shaft and connecting rod to separate and fall off.

[0004] Therefore, this invention provides a precision shaft that is easy to position, in order to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved This invention provides a precision shaft that is easy to position, aiming to solve the problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A precision shaft for easy positioning includes a precision shaft body and a connecting rod. One end of the precision shaft body is fixedly connected to a fixing post, and multiple positioning blocks are fixedly connected to the side of the fixing post. The other end of the fixing post is fixedly connected to an insertion rod, which has insertion holes. The connecting rod contains a first slot, multiple grooves, a second slot, two sliding grooves, and two sets of limiting grooves. Two insertion blocks are slidably connected to the connecting rod, and the two insertion blocks are symmetrically arranged. Side plates are fixedly connected to both sides of each insertion block, and springs are provided on the side plates. A top plate is fixedly connected to the top of each insertion block. An inner cavity is provided inside the insertion block, and an elastic sheet is provided within the inner cavity. A connecting rope is fixedly connected to the top of the elastic sheet, and a limiting block is fixedly connected to the other end of the connecting rope.

[0007] As a preferred technical solution of this application, the plurality of positioning blocks are evenly arranged, and the positioning blocks correspond to the grooves.

[0008] As a preferred technical solution of this application, the plurality of grooves are evenly arranged on the side of the first slot, and the grooves are connected to the first slot.

[0009] As a preferred technical solution of this application, the first slot and the second slot are arranged sequentially from the outside to the inside, and the first slot and the second slot correspond to the fixing post and the insertion rod respectively. The diameter of the fixing post is larger than the diameter of the insertion rod.

[0010] As a preferred technical solution of this application, each set of limiting grooves consists of two limiting grooves, which are located on both sides of the slide groove and correspond to the slide groove.

[0011] As a preferred technical solution of this application, the insert block and the side plate are both located in the slide groove, the other end of the spring is fixedly connected to one side of the slide groove, both ends of the insert block pass through the slide groove, the top plate is located outside the connecting rod, and the other end of the insert block extends into the second slot and corresponds to the insertion hole.

[0012] As a preferred technical solution of this application, the elastic sheet is composed of a trapezoidal shape and two transverse metal sheets, with the two transverse metal sheets located at both ends of the trapezoidal metal sheet and fixedly connected to it.

[0013] As a preferred technical solution of this application, both ends of the elastic sheet pass through the insert block and extend out a portion, and both ends of the elastic sheet extend into the limiting groove.

[0014] As a preferred technical solution of this application, the length of the insert block extending into the second slot is greater than the depth of the limiting groove and less than the maximum distance between the side plate and one side of the sliding groove.

[0015] As a preferred technical solution of this application, one end of the connecting rope passes through the insert block and the top plate in sequence, and the limiting block is located above the top plate.

[0016] (III) Beneficial Effects By setting up positioning blocks and grooves, it is not only convenient to position the precision shaft body and connecting rod when they are connected, but also to strengthen the tightness of the connection between the precision shaft body and the connecting rod, making them a whole. This strengthens the strength of the precision shaft body and the connecting rod. Subsequently, by setting up elastic plates and limiting grooves, the insert block can be limited to prevent it from moving out of the insertion hole under the action of centrifugal force during use, which would cause the precision shaft body and the connecting rod to separate and fall off, affecting the use of the device. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a precision shaft that is easy to position; Figure 2 This is a schematic diagram of the installation of a precision shaft body in a precision shaft that is easy to position. Figure 3 This is a schematic diagram of the installation of a precision shaft connecting rod that is easy to position. Figure 4 This is a schematic diagram showing the disassembly of a precision shaft insert and an elastic plate for easy positioning; Figure 5 A cross-sectional view of a precision shaft connecting rod that is easy to position. Figure 1 ; Figure 6 A cross-sectional view of a precision shaft connecting rod that is easy to position. Figure 2 .

[0018] In the picture: 1. Precision shaft body; 2. Connecting rod; 3. Fixing post; 4. Positioning block; 5. Insert rod; 6. Insertion hole; 7. Slot No. 1; 8. Groove; 9. Slot No. 2; 10. Slide groove; 11. Insert block; 12. Side plate; 13. Top plate; 14. Spring; 15. Inner cavity; 16. Elastic sheet; 17. Connecting rope; 18. Limiting block; 19. Limiting groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides a precision shaft that is easy to position, such as Figures 1-6As shown, the device includes a precision shaft body 1 and a connecting rod 2. A fixing post 3 is fixedly connected to one end of the precision shaft body 1. Multiple positioning blocks 4 are fixedly connected to the side of the fixing post 3. An insertion rod 5 is fixedly connected to the other end of the fixing post 3. The insertion rod 5 has insertion holes 6. The insertion holes 6, in conjunction with the positioning blocks 4, facilitate alignment between the insertion holes 6 and the insertion blocks 11. Simply align the insertion holes 6 and the insertion blocks 11 roughly, then push the positioning blocks 4 into the grooves 8. The connecting rod 2 contains a first slot 7, multiple grooves 8, a second slot 9, two sliding grooves 10, and two sets of limiting grooves 19. Two insertion blocks 11 are slidably connected to the connecting rod 2, and the two insertion blocks 11 are symmetrically arranged. The insertion blocks 11 are aligned with the insertion holes 6. The precision shaft body 1 and the connecting rod 2 can be fixed together. Side plates 12 are fixedly connected to both sides of the insert block 11. Springs 14 are provided on the side plates 12. Top plate 13 is fixedly connected to the top of the insert block 11. The insert block 11 has an inner cavity 15. An elastic piece 16 is provided in the inner cavity 15. The elastic piece 16 is made of memory metal with good elasticity. The setting of the elastic piece 16 can limit the movement distance of the insert block 11. A connecting rope 17 is fixedly connected to the top of the elastic piece 16. The other end of the connecting rope 17 is fixedly connected to a limit block 18. The limit block 18 is made of lightweight material and does not need to be too large. It is sufficient that one end of the connecting rope 17 will not be retracted into the top plate 13.

[0021] Multiple positioning blocks 4 are evenly arranged, and the positioning blocks 4 correspond to the grooves 8.

[0022] Multiple grooves 8 are evenly arranged on the side of slot 7, and the grooves 8 are connected to slot 7.

[0023] Slot 7 and slot 9 are arranged sequentially from the outside to the inside. Slot 7 and slot 9 correspond to fixed post 3 and insert rod 5 respectively. The diameter of fixed post 3 is larger than the diameter of insert rod 5.

[0024] Each set of limiting grooves 19 consists of two limiting grooves 19, which are located on both sides of the slide groove 10 and correspond to the slide groove 10.

[0025] Both the insert 11 and the side plate 12 are located in the slide groove 10. The other end of the spring 14 is fixedly connected to one side of the slide groove 10. Both ends of the insert 11 pass through the slide groove 10. The top plate 13 is located outside the connecting rod 2. The other end of the insert 11 extends into the second slot 9 and corresponds to the insertion hole 6.

[0026] The elastic sheet 16 consists of a trapezoidal shape and two transverse metal sheets. The two transverse metal sheets are located at both ends of the trapezoidal metal sheet and are fixedly connected to it. The length of the transverse metal sheets is greater than the maximum distance between the top of the elastic sheet 16 and the top of the inner cavity 15.

[0027] Both ends of the elastic sheet 16 pass through the insert block 11 and extend out a portion, and both ends of the elastic sheet 16 extend into the limiting groove 19.

[0028] The length of the insert 11 extending into the second slot 9 is greater than the depth of the limiting groove 19 but less than the maximum distance between the side plate 12 and one side of the slide groove 10.

[0029] One end of the connecting rope 17 passes through the insert block 11 and the top plate 13 in sequence, and the limiting block 18 is located above the top plate 13.

[0030] Specifically, first, the limiting block 18 is pulled outward. When the limiting block 18 moves, it pulls the connecting rope 17, and when the connecting rope 17 moves, it pulls the elastic plate 16. Under the action of the pulling force, the elastic plate 16 moves towards the top of the inner cavity 15. As the elastic plate 16 moves, the elastic plate 16 will deform. At this time, the two ends of the elastic plate 16 will move out of the limiting groove 19 and retract into the insert block 11. Since the length of the transverse metal plate on the elastic plate 16 is greater than the maximum distance between the top of the elastic plate 16 and the top of the inner cavity 15, the two ends of the elastic plate 16 will not move back into the inner cavity 15. When the top of the elastic plate 16 abuts against the top of the inner cavity 15, the limiting block 18 will continue to be pulled or the top plate 13 will be pulled outward, thereby moving the insert block 11 outward. When the insert block 11 moves, it will squeeze the spring 14 until the insert block 11 is difficult to pull. Then, the other insert block 11 is pulled outward in the same way.

[0031] Next, roughly align the insertion hole 6 on the precision shaft body 1 with the top plate 13, and align the positioning block 4 on the fixing post 3 with the groove 8. Then, insert the precision shaft body 1 into the connecting rod 2. At this time, the insertion rod 5 and the fixing post 3 are located in the second slot 9 and the first slot 7, respectively, and the insertion hole 6 is exactly aligned with the insertion block 11. When the precision shaft body 1 can no longer be pushed, release the insertion block 11 and the limiting block 18. At this time, the insertion block 11 will move back under the elastic force of the spring 14 and insert into the insertion hole 6, thereby fixing the precision shaft body 1. At the same time, when the insertion block 11 moves, it will move along with the elastic piece 16. When the two ends of the elastic piece 16 move to the limiting groove 19, the elastic piece 16 will return to its original shape under its own restoring force. At this time, the two ends of the elastic piece 16 will move outward and extend into the limiting groove 19 until it is completely restored, and the limiting block 18 will fall back onto the top plate 13.

[0032] When the insert 11 moves outward under the action of centrifugal force and squeezes the spring 14, it will move the elastic plate 16 at the same time. Since the length of the insert 11 extending into the second slot 9 is greater than the depth of the limiting groove 19 and less than the maximum distance between the side plate 12 and the side of the slide groove 10, when the two ends of the elastic plate 16 move to the other end of the limiting groove 19, the insert 11 can no longer move outward unless pulled by an external force. At this time, part of the insert 11 is still located in the insertion hole 6, so unless manually operated, the precision shaft body 1 will not separate from the connecting rod 2.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A precision shaft for easy positioning comprising a precision shaft body (1) and a connecting rod (2), characterized in that: One end of the precision shaft body (1) is fixedly connected to a fixed column (3), and a plurality of positioning blocks (4) are fixedly connected to the side of the fixed column (3). The other end of the fixed column (3) is fixedly connected to a plug rod (5). The plug rod (5) is provided with a plug hole (6). The connecting rod (2) is provided with a first slot (7), a plurality of grooves (8), a second slot (9), two sliding grooves (10) and two sets of limiting grooves (19). Two plug blocks (11) are slidably connected to the connecting rod (2), and the two plug blocks (11) are symmetrically arranged. Side plates (12) are fixedly connected to both sides of the plug blocks (11). Springs (14) are provided on the side plates (12). A top plate (13) is fixedly connected to the top of the plug blocks (11). An inner cavity (15) is provided inside the plug blocks (11). An elastic sheet (16) is provided inside the inner cavity (15). A connecting rope (17) is fixedly connected to the top of the elastic sheet (16). A limiting block (18) is fixedly connected to the other end of the connecting rope (17).

2. A precision shaft for ease of positioning according to claim 1, wherein: The multiple positioning blocks (4) are evenly arranged, and the positioning blocks (4) correspond to the grooves (8).

3. A precision shaft for ease of positioning according to claim 1, wherein: Multiple grooves (8) are evenly arranged on the side of slot 1 (7), and the grooves (8) are connected to slot 1 (7).

4. A precision shaft for ease of positioning according to claim 1, wherein: The first slot (7) and the second slot (9) are arranged sequentially from the outside to the inside. The first slot (7) and the second slot (9) correspond to the fixing post (3) and the insertion rod (5) respectively. The diameter of the fixing post (3) is larger than the diameter of the insertion rod (5).

5. A precision shaft for ease of positioning according to claim 4, wherein: Each set of limiting grooves (19) consists of two limiting grooves (19), which are located on both sides of the slide groove (10) and correspond to the slide groove (10).

6. A precision shaft for ease of positioning according to claim 1, wherein: The insert (11) and the side plate (12) are both located in the slide groove (10). The other end of the spring (14) is fixedly connected to one side of the slide groove (10). Both ends of the insert (11) penetrate the slide groove (10). The top plate (13) is located outside the connecting rod (2). The other end of the insert (11) extends into the second slot (9) and corresponds to the insertion hole (6).

7. A precision shaft for ease of positioning according to claim 1, wherein: The elastic sheet (16) is composed of a trapezoidal shape and two transverse metal sheets, with the two transverse metal sheets located at both ends of the trapezoidal metal sheet and fixedly connected to it.

8. A precision shaft for ease of positioning according to claim 1, wherein: Both ends of the elastic sheet (16) pass through the insert (11) and extend out a portion, and both ends of the elastic sheet (16) extend into the limiting groove (19).

9. A precision shaft for ease of positioning according to claim 1, wherein: The length of the insert (11) extending into the second slot (9) is greater than the depth of the limiting groove (19) and less than the maximum distance between the side plate (12) and the side of the slide (10).

10. A precision shaft for ease of positioning according to claim 1, wherein: One end of the connecting rope (17) passes through the insert block (11) and the top plate (13) in sequence, and the limiting block (18) is located above the top plate (13).

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