Flexible shaft inner pipe flocking process and flexible shaft

Abstract

The invention discloses a flexible shaft inner pipe flocking process and a flexible shaft, the flexible shaft inner pipe flocking process comprises a flexible shaft sleeve, the end portion of the flexible shaft sleeve is fixedly connected with a connecting piece, the connecting piece is detachably connected with a fixing mechanism, the fixing mechanism comprises a fixing sleeve, and the fixing sleeve is detachably connected to the end, away from the flexible shaft sleeve, of the connecting piece; the positioning head is fixedly connected to one end, far away from the connecting piece, of the fixing sleeve; and the fastening bolt is in threaded connection with the fixing sleeve. According to the flexible shaft inner pipe flocking process and the flexible shaft, the flocking adhesive is coated on the outer surface of the flexible shaft main body, and the flexible shaft main body is heated, so that when the flexible shaft main body is fixed with the flocking thread subsequently, the flocking thread cannot be excessively melted and damaged due to the effect of the flocking adhesive, and the flocking quality of the flocking thread is improved. The flocked thread can be fixed to the outer surface of the flexible shaft body, meanwhile, the worn flocked thread can be rapidly replaced through the fixing mechanism, operation is convenient, and follow-up continuous use of the flexible shaft is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible shaft manufacturing, and specifically to a flocking process for the inner tube of a flexible shaft and a flexible shaft. Background Art

[0002] A flexible shaft is a shaft used in an electric adjustment seat to transmit torque and rotational motion. The flexible shaft is wound by multiple layers of multiple steel wires. To reduce the noise generated by friction and collision during the operation of the flexible shaft, a flocking layer is provided on the flexible shaft body in the existing flexible shafts to achieve the purpose of reducing noise, reducing vibration, and extending the service life of the flexible shaft and the casing.

[0003] Currently, there are mainly the following two methods for flocking the flexible shaft body: First, electrostatic flocking: atomize the glue, and the fluff is adhered to the flexible shaft body by electrostatic adsorption; Second, plastic adhesion: coat the plastic on the flexible shaft body to form a plastic layer, and then wind and adhere the flocking thread on the plastic layer. However, through the method of electrostatic flocking, due to the influence of static electricity, if the distribution is uneven, it will cause uneven distribution of the subsequent fluff; through the method of plastic adhesion, this fixation is not firm and it is easy to cause the shedding of the flocking thread. In view of this, we propose a flocking process for the inner tube of a flexible shaft and a flexible shaft. Summary of the Invention

[0004] The main purpose of the present invention is to provide a flocking process for the inner tube of a flexible shaft and a flexible shaft, which can solve the problems raised in the above background art.

[0005] To achieve the above object, the flexible shaft proposed by the present invention includes a flexible shaft sleeve. One end of the flexible shaft sleeve is fixedly connected with a connecting member, and the connecting member is detachably connected with a fixing mechanism. The fixing mechanism includes: A fixing sleeve, which is detachably connected to one end of the connecting member away from the flexible shaft sleeve. By using the fixing sleeve, the flexible shaft body can be fixed inside the fixing sleeve, which is convenient for the subsequent connection between the fixing sleeve and the connecting member, so that the flexible shaft body can be installed inside the flexible shaft sleeve; A positioning head, which is fixedly connected to one end of the fixing sleeve away from the connecting member. By using the positioning head, the limit of the positioning end of the flexible shaft can be realized. Furthermore, when the fixing sleeve rotates, the flexible shaft body can be driven to rotate as a whole; A fastening bolt, which is threadedly connected to the fixing sleeve. By using the fastening bolt, the flexible shaft body sleeved in the fixing sleeve can be stably fixed.

[0006] Preferably, the fixing mechanism further includes a limiting component, which is arranged on the side of the fastening bolt. By using the limiting component, during the continuous use of the flexible shaft, it can prevent the fastening bolt from loosening during the continuous rotation and use of the flexible shaft, resulting in the loosening of the fixation of the flexible shaft body, and ensure the stable use of the flexible shaft.

[0007] Preferably, the limiting component includes a limiting groove, a sliding block is slidably connected in the limiting groove, the sliding block is elastically connected with the inner surface of the limiting groove through a return spring, a notch is formed on one side of the sliding block close to the return spring, and a pressing block is fixedly connected to the side of the sliding block away from the notch. By using the limiting groove, it can ensure the stable sliding of the sliding block during sliding. By using the return spring, it is convenient for the return spring to drive the sliding block to slide in the limiting groove during resetting.

[0008] Preferably, a rotating plate is rotatably connected in the notch, a pulling handle is fixedly connected to the upper side of the rotating plate, a positioning rod is fixedly connected to the outer wall of the fixed sleeve, and the positioning rod penetrates through the limiting block and is rotatably connected with the limiting block. By rotating the rotating plate to a horizontal state and making the rotating plate abut against the limiting groove, the limiting of the rotating plate is realized. At this time, the return spring is in a stretched state, the sliding block slides in the limiting groove, and then drives the pressing block to abut tightly against the fastening bolt. Then rotate the limiting block to make the limiting block located above the rotating plate to limit the rotating plate and ensure that the pressing block stably abuts against the fastening bolt, preventing the fastening bolt from loosening during the continuous rotation of the flexible shaft and causing the loosening of the fixation of the flexible shaft main body, and ensuring the stable use of the flexible shaft.

[0009] Preferably, a flexible shaft sleeve is sleeved on a flexible shaft main body, a flexible shaft positioning end is fixedly connected to the end of the flexible shaft main body, and a flocking thread is adhered to the outer wall of the flexible shaft main body.

[0010] Preferably, a positioning opening is formed on one side of the positioning head close to the fixed sleeve, and the size of the positioning opening matches that of the flexible shaft positioning end. By using the positioning opening, after the flexible shaft main body is inserted into the fixed sleeve, the flexible shaft positioning end can be inserted into the positioning opening to realize the limiting of the flexible shaft positioning end.

[0011] Preferably, the flexible shaft main body is formed by winding multiple groups of steel wires, and one end of the flocking thread is fixedly connected to the surface of the steel wire.

[0012] A flocking process for the inner tube of a flexible shaft proposed by the present invention includes the following steps: S1. Take multiple groups of steel wires and wind the multiple groups of steel wires to form a flexible shaft main body; S2. Perform a heat treatment on the flexible shaft main body, and after the heat treatment of the flexible shaft main body is completed, apply a layer of flocking adhesive to the outer surface of the flexible shaft main body; S3. Make the flexible shaft main body move forward through a winding mechanism. During this process, synchronously wind the flocking thread so that the flocking thread is evenly wound on the outer surface of the flexible shaft main body, and the part of the flocking thread in contact with the flexible shaft main body is fixed on the outer surface of the flexible shaft main body; S4. Wind up the flexible shaft main body wound with the flocking thread to make a semi-finished flocked flexible shaft; S5. Then place the semi-finished flocked flexible shaft into the flexible shaft sleeve, then sleeve the fixing mechanism on one end of the semi-finished flocked flexible shaft, then connect and fix the fixing mechanism with the connecting piece, and finally tighten the fastening bolt to complete the fixing of the flexible shaft main body.

[0013] Preferably, in the step S, electrostatic treatment is performed on the flocking adhesive coated on the outer surface of the flexible shaft main body.

[0014] Preferably, in the step S, the excess flocking thread wound around the flexible shaft main body is cut, and at the same time, cooling treatment is performed after the flocking thread is fixed on the outer surface of the flexible shaft main body.

[0015] The present invention provides a flocking process for the inner tube of a flexible shaft and a flexible shaft. It has the following beneficial effects: (1). The flocking process for the inner tube of the flexible shaft and the flexible shaft coat the flocking adhesive on the outer surface of the flexible shaft main body and heat the flexible shaft main body, so that when the flexible shaft main body is fixed to the flocking thread subsequently, due to the action of the flocking adhesive, the flocking thread will not be over-melted, ensuring that the flocking thread can be fixed on the outer surface of the flexible shaft main body.

[0016] (2). The flocking process for the inner tube of the flexible shaft and the flexible shaft can facilitate the fixing of the flexible shaft main body through the use of the fixing mechanism, so that when the flocking thread on the outer surface of the flexible shaft main body is worn, the worn flocking thread can be quickly replaced, with convenient operation, ensuring the continuous use of the flexible shaft subsequently.

[0017] (3). The flocking process for the inner tube of the flexible shaft and the flexible shaft can prevent the fastening bolt from loosening during the continuous rotation and use of the flexible shaft to cause the loosening of the fixing of the flexible shaft main body, ensuring the stable use of the flexible shaft, by using the limiting component, so that during the continuous use of the flexible shaft, after the rotating plate abuts against the limiting groove and the rotating plate is limited by the limiting block, the pressing block can abut against the fastening bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention Figure 1 ; Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention Figure 2 ; Figure 4 Structural schematic diagram of the fixing mechanism of the present invention; Figure 5 Cross-sectional structural schematic diagram of the fixing mechanism of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of structure A in

[0020] Explanation of reference numerals in the attached drawings: 1. Flexible shaft sleeve; 2. Connector; 3. Fixing mechanism; 101. Flexible shaft positioning end; 102. Flexible shaft main body; 103. Flocked thread; 31. Fixing sleeve; 32. Positioning head; 33. Fastening bolt; 34. Limiting component; 321. Positioning port; 341. Limiting groove; 342. Sliding block; 343. Notch; 344. Pressing block; 345. Rotating plate; 346. Positioning rod; 347. Limiting block.

[0021] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the attached drawings. Embodiment mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0023] Please refer to Figures 1 - 4, the present invention provides a flexible shaft, which includes a flexible shaft sleeve 1. A flexible shaft main body 102 is sleeved in the flexible shaft sleeve 1. The flexible shaft main body 102 is formed by winding multiple groups of steel wires, and one end of a flocking thread 103 is fixedly connected to the surface of the steel wire. A flexible shaft positioning end 101 is fixedly connected to the end of the flexible shaft main body 102. The flocking thread 103 is adhered to the outer wall of the flexible shaft main body 102. A connector 2 is fixedly connected to the end of the flexible shaft sleeve 1. The connector 2 is detachably connected to a fixing mechanism 3. By using the connector 2, the fixing mechanism 3 can be connected and fixed, which is convenient for subsequently fixing the flexible shaft main body 102 inside the flexible shaft sleeve 1. The fixing mechanism 3 includes a fixing sleeve 31. By using the fixing sleeve 31, the flexible shaft main body 102 can be fixed inside the fixing sleeve 31, which is convenient for the subsequent connection between the fixing sleeve 31 and the connector 2, so that the flexible shaft main body can be installed inside the flexible shaft sleeve. The fixing sleeve 31 is detachably connected to one end of the connector 2 away from the flexible shaft sleeve 1. A positioning head 32 is fixedly connected to the end of the fixing sleeve 31 away from the connector 2. The fixing sleeve 31 is threadedly connected with a fastening bolt 33. By placing the end of the flexible shaft main body 102 into the fixing sleeve 31, then fixing the flexible shaft main body 102 with the fastening bolt 33, and then threadedly connecting the fixing sleeve 31 with the connector 2, the flexible shaft main body 102 can be stably fixed in the flexible shaft sleeve 1. After the flocking thread 103 on the outer surface of the flexible shaft main body 102 wears out subsequently, the worn flocking thread 103 can be quickly replaced, and the operation is convenient, ensuring the continuous use of the flexible shaft subsequently. Embodiment

[0024] Please refer to Figures 5 - 6, on the basis of the first embodiment, the fixing mechanism 3 further includes a limiting component 34. The limiting component 34 is arranged on the side of the fastening bolt 33. The limiting component 34 includes a limiting groove 341. A sliding block 342 is slidably connected in the limiting groove 341. By using the limiting groove 341, it can ensure that the sliding block 342 slides stably when sliding. The sliding block 342 and the inner surface of the limiting groove 341 are elastically connected by a return spring. By using the return spring, it is convenient for the return spring to drive the sliding block 342 to slide in the limiting groove 341 during subsequent reset. A notch 343 is formed on one side of the sliding block 342 close to the return spring. A pressing block 344 is fixedly connected to the side of the sliding block 342 away from the notch 343. A rotating plate 345 is rotatably connected in the notch 343. A pulling handle is fixedly connected to the upper side of the rotating plate 345. A positioning rod 346 is fixedly connected to the outer wall of the fixed sleeve 31. There is a large damping effect between the positioning rod 346 and the limiting block 347, so that the limiting block 347 can remain stable after rotation. The positioning rod 346 passes through the limiting block 347 and is rotatably connected to the limiting block 347. A positioning port 321 is formed on the side of the positioning head 32 close to the fixed sleeve 31. The size of the positioning port 321 matches the soft shaft positioning end. By using the positioning port 321, after the soft shaft main body 102 is inserted into the fixed sleeve 31, the soft shaft positioning end 101 can be inserted into the positioning port 321 to realize the limitation of the soft shaft positioning end 101. Furthermore, during the rotation of the fixed sleeve 31, the soft shaft main body 102 can be driven to rotate integrally.

[0025] It should be noted that when it is necessary to stably fix the soft shaft main body 102, the soft shaft main body 102 is tightened by rotating the fastening bolt 33 to realize the fixation of the soft shaft main body 102. Then, the rotating plate 345 is rotated to make the rotating plate 345 disengage from the notch 343, so that the rotating plate 345 can be rotated to a horizontal state and the rotating plate 345 abuts against the limiting groove 341 to realize the limitation of the rotating plate 345. At this time, the return spring is in a stretched state. During this process, the sliding block 342 slides in the limiting groove 341, and then drives the pressing block 344 to abut tightly against the fastening bolt 33. Then, the limiting block 347 is rotated to make the limiting block 347 located above the rotating plate 345 to limit the rotating plate 345 and ensure that the pressing block 344 stably abuts against the fastening bolt 33, preventing the fastening bolt 33 from loosening during the continuous rotation and use of the soft shaft, resulting in the loosening of the fixation of the soft shaft main body 102, and ensuring the stable use of the soft shaft.

[0026] A flocking process for the inner tube of a soft shaft proposed by the present invention includes the following steps: S1. Take multiple groups of steel wires and wind the multiple groups of steel wires to form the soft shaft main body 102; S2. Heat-treat the soft shaft main body 102, and after the soft shaft main body 102 is heated, apply a layer of flocking adhesive to the outer surface of the soft shaft main body 102; Among them, in step S2, electrostatic treatment is performed on the flocking adhesive coated on the outer surface of the flexible shaft body 102.

[0027] S3. The flexible shaft body 102 is moved forward by the winding mechanism. During this process, the flocking thread 103 is synchronously wound so that the flocking thread 103 is evenly wound on the outer surface of the flexible shaft body 102, and the part of the flocking thread 103 in contact with the flexible shaft body 102 is fixed on the outer surface of the flexible shaft body 102. S4. The flexible shaft body 102 wound with the flocking thread 103 is wound to make a semi-finished flocked flexible shaft. Among them, in step S4, the excess flocking thread 103 wound on the flexible shaft body 102 is cut, and at the same time, cooling treatment is performed after the flocking thread 103 is fixed on the outer surface of the flexible shaft body 102.

[0028] S5. Then the semi-finished flocked flexible shaft is placed into the flexible shaft sleeve 1, the fixing mechanism 3 is sleeved on one end of the semi-finished flocked flexible shaft, then the fixing mechanism 3 is connected and fixed to the connecting member 2, and finally the fastening bolt 33 is tightened to complete the fixing of the flexible shaft body 102.

[0029] During actual use, the flexible shaft body 102 is fixed on the winding wheel of the winding mechanism. Through the operation of the winding mechanism, the winding wheel rotates to drive the flexible shaft body 102 to move. During this process, the flocking adhesive coated on the outer surface of the flexible shaft body 102 is electrostatically treated. At the same time, during this process, the flexible shaft body 102 is heat-treated. After the flocking adhesive is coated on the flexible shaft body 102, during the movement of the flexible shaft body 102, the flocking thread 103 is synchronously wound so that the flocking thread 103 is evenly wound on the outer surface of the flexible shaft body 102. During this process, the outer surface of the flexible shaft body 102 is cooled, and then the two ends of the excess flocking thread 103 of the completed flocked flexible shaft semi-finished product are removed.

[0030] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A flexible shaft, comprising a flexible shaft sleeve (1), characterized in that: A connecting member (2) is fixedly connected to the end of the flexible shaft sleeve (1), and the connecting member (2) is detachably connected to a fixing mechanism (3), and the fixing mechanism (3) includes: A fixing sleeve (31), and the fixing sleeve (31) is detachably connected to one end of the connecting member (2) away from the flexible shaft sleeve (1); A positioning head (32), and the positioning head (32) is fixedly connected to one end of the fixing sleeve (31) away from the connecting member (2); A fastening bolt (33), and the fastening bolt (33) is threadedly connected to the fixing sleeve (31).

2. A flexible shaft according to claim 1, characterized in that: The fixing mechanism (3) further includes a limiting component (34), and the limiting component (34) is arranged on the side of the fastening bolt (33).

3. A flexible shaft according to claim 2, characterized in that: The limiting component (34) includes a limiting groove (341), a sliding block (342) is slidably connected in the limiting groove (341), the sliding block (342) is elastically connected to the inner surface of the limiting groove (341) through a return spring, a notch (343) is formed on one side of the sliding block (342) close to the return spring, and a pressing block (344) is fixedly connected to one side of the sliding block (342) away from the notch (343).

4. A flexible shaft according to claim 3, characterized in that: A rotating plate (345) is rotatably connected in the notch (343), a pulling handle is fixedly connected to the upper side of the rotating plate (345), a positioning rod (346) is fixedly connected to the outer wall of the fixing sleeve (31), and the positioning rod (346) penetrates through a limiting block (347) and is rotatably connected to the limiting block (347).

5. A flexible shaft according to claim 1, characterized in that: The flexible shaft sleeve (1) sleeved with a flexible shaft body (102), a flexible shaft positioning end (101) is fixedly connected to the end of the flexible shaft body (102), and a flocking thread (103) is adhered to the outer wall of the flexible shaft body (102).

6. A flexible shaft according to claim 5, characterized in that: A positioning port (321) is formed on one side of the positioning head (32) close to the fixing sleeve (31), and the size of the positioning port (321) matches that of the flexible shaft positioning end.

7. A flexible shaft according to claim 5, characterized in that: The flexible shaft body (102) is formed by winding multiple groups of steel wires, and one end of the steel wire is fixedly connected to the surface of the flocking thread (103).

8. A flocking process for the inner tube of a flexible shaft as claimed in claims 1-7, characterized in that, comprising the following steps: S1. Take multiple groups of steel wires and wind the multiple groups of steel wires to form a flexible shaft body (102); S2. Perform a heat treatment on the flexible shaft body (102), and after the heat treatment of the flexible shaft body (102) is completed, apply a layer of flocking adhesive to the outer surface of the flexible shaft body (102); S3. Move the flexible shaft body (102) forward through the rewinding mechanism. During this process, wind the flocking thread (103) synchronously so that the flocking thread (103) is evenly wound on the outer surface of the flexible shaft body (102), and the part of the flocking thread (103) in contact with the flexible shaft body (102) is fixed on the outer surface of the flexible shaft body (102). S4. Rewind the flexible shaft body (102) wound with the flocking thread (103) to make a semi-finished flocked flexible shaft. S5. Then place the semi-finished flocked flexible shaft into the flexible shaft sleeve (1), sleeved the fixing mechanism (3) on one end of the semi-finished flocked flexible shaft, then connect and fix the fixing mechanism (3) with the connecting piece (2), and finally tighten the fastening bolt (33) to complete the fixing of the flexible shaft body (102).

9. A flocking process for a flexible shaft inner tube according to claim 8, wherein, in the step S2, electrostatic treatment is performed on the flocking adhesive applied to the outer surface of the flexible shaft body (102).

10. A flocking process for a flexible shaft inner tube according to claim 8, wherein, in the step S4, the excess flocking thread (103) wound on the flexible shaft body (102) is cut, and at the same time, cooling treatment is performed after the flocking thread (103) is fixed on the outer surface of the flexible shaft body (102).

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