Screw capable of being positioned

Abstract

The utility model relates to the technical field of screws, and discloses a positionable screw which comprises a screw body, a receding hole is formed in the bottom of the screw body, a guide end and a composite elastic rod piece are arranged in the receding hole in a sleeved mode, and the composite elastic rod piece is located between the top of the guide end and the inner wall of the top of the receding hole. And the guide end head can move in the receding hole in a reciprocating sleeving manner under the elastic supporting effect of the composite elastic rod piece. The multifunctional guide assembly is composed of the guide end and the composite elastic rod piece, after the multifunctional guide assembly is assembled with the screw body for use, the guide end can be sleeved with an internal threaded hole of a target workpiece under the elastic support of the composite elastic rod piece at the early stage that the screw body is connected with the internal threaded hole of the target workpiece, and auxiliary automatic positioning is carried out; therefore, connection dislocation during assembly is avoided, the assembly speed of a production line is optimized, the bad assembly rate is reduced, and the overall efficiency of production and assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a positionable screw. Background Art

[0002] Screws, also known as screws, usually refer to tools that use the physical and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually tighten objects and machine parts. They have a wide range of uses. However, the front ends of the screws on the market are basically flat structures. When assembled with the target parts, if the operation is not vertical, it is very likely that the internal threads of the target parts will be damaged, which will lead to the failure of smooth assembly of the screws and the target parts, causing rework and increasing manufacturing costs. Secondly, the production lines are basically assembly line operations. If the operator assembles the screws and the target workpiece poorly, it will affect the speed of the entire assembly line, thereby reducing the processing efficiency of the overall process. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a positionable screw, which solves the problems raised by the above-mentioned background technology.

[0004] The utility model provides the following technical solution: a positionable screw, comprising a screw body, a clearance hole is opened in the bottom of the screw body, a guide end head and a composite elastic rod are sleeved in the clearance hole, the composite elastic rod is located between the top of the guide end head and the top inner wall of the clearance hole, and the guide end head can be reciprocated and sleeved in the clearance hole under the elastic support of the composite elastic rod.

[0005] The bottom of the guide end is a hemispherical structure. The guide end can automatically position itself with the target workpiece before the use of the screw body, so as to ensure that the connection during assembly will not be misaligned, optimize the speed of assembly on the production line, reduce the defective rate, and improve the overall efficiency of production assembly. The top of the guide end is a cylindrical structure that can be snapped into the clearance hole.

[0006] The guide end head can be completely snapped into the inside of the makeshift hole, thereby ensuring the contact area between the screw body and the matching hole structure, and the surface of the guide end head and the surface of the screw body are both provided with a corrosion-resistant coating, which improves the performance of the guide end head and the screw body and extends their service life.

[0007] The composite elastic rod member comprises a buffer spring, a composite sleeve, and a buffer rod. The composite sleeve is composed of a damping ring and a supporting sleeve. The top of the damping ring is fixedly connected to the bottom of the supporting sleeve. The two ends of the buffer spring are respectively fixedly connected between the bottom of the damping ring and the top of the guide end.

[0008] Preferably, the buffer rods are provided in no less than two and are fixedly connected to the top of the guide end. After the guide end is completely fitted into the clearance hole, the buffer rods can come into pressure contact with the bottom of the damping ring, thereby achieving damping.

[0009] Selected, both sides of the middle part of the screw body are provided with mounting holes that can communicate with the space of the makeshift hole, and both sides of the support sleeve are provided with threaded holes, the two threaded holes are aligned with the two mounting holes, and the two mounting holes are clamped with internal thread sleeves, and one end of the two internal thread sleeves are respectively threaded in the two threaded holes, so that the support sleeve and the screw body can be detachably installed, thereby enabling the composite elastic rod and the guide end to maintain the independence of their own structure during use in combination with the screw body, thereby meeting the needs of subsequent convenient maintenance and replacement.

[0010] Preferably, a guide hole that can communicate with the space of the clearance hole is opened in the top of the screw body, and a constraint rod is clamped in the guide hole. One end of the constraint rod passes through the composite sleeve plate and the buffer spring in sequence and is fixedly connected to the top of the guide end head. The guide hole and the constraint rod are clamped and guided to improve the stability of the guide end head during the reciprocating movement in the clearance hole.

[0011] Preferably, a pressure diffuser sleeve is mounted on the outer side of the top of the screw body to expand the locking range of the overall device, and a corrosion-resistant coating is also provided on the surface of the pressure diffuser sleeve to increase the corrosion-resistant performance of the pressure diffuser sleeve and improve its service life.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model forms a multifunctional guide component by setting a guide end and a composite elastic rod. After being assembled with the screw body, in the early stage of connecting the screw body and the internal threaded hole of the target workpiece, the guide end can be first fitted with the internal threaded hole of the target workpiece under the elastic support of the composite elastic rod to perform auxiliary automatic positioning, thereby ensuring that the connection during assembly will not be misaligned, optimizing the speed of assembly of the production line, reducing the rate of defective assembly, and improving the overall efficiency of production assembly.

[0014] 2. The utility model improves the corrosion resistance of the entire device by subjecting the screw body and the guide end to corrosion-resistant coating, thereby extending the service life and reducing subsequent resource waste.

[0015] 3. The composite elastic rod provided in the utility model is detachably mounted on the screw body through two inner thread sleeves, so that the composite elastic rod and the guide end can maintain the independence of their own structure during the combined use with the screw body, providing conditions for subsequent convenient maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional schematic view of the structure of the present utility model;

[0017] Figure 2 is a front view schematic view of the structure of the present utility model;

[0018] Figure 3 is a three-dimensional schematic view of the screw body of the structure of the present utility model;

[0019] Figure 4 is an enlarged schematic view of the guiding end head of the structure of the present utility model;

[0020] Figure 5 is the structure of the present utility model Figure 1 an enlarged schematic view of part A in;

[0021] In the figure: 1, screw body; 2, guiding end head; 3, composite elastic rod; 31, buffer spring; 32, composite sleeve plate; 321, damping ring; 322, support sleeve plate; 33, buffer rod; 4, guiding hole; 5, restraint rod; 6, internal screw sleeve; 7, pressure-expanding sleeve plate. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figure 1 , Figure 3 , a positionable screw, including a screw body 1, a relief hole is opened inside the bottom of the screw body 1, a guiding end head 2 and a composite elastic rod 3 are sleeved inside the relief hole, the composite elastic rod 3 is located between the top of the guiding end head 2 and the top inner wall of the relief hole, and the guiding end head 2 can reciprocally sleeve and move inside the relief hole under the elastic support of the composite elastic rod 3;

[0025] The bottom of the guiding end 2 is a hemispherical structure. The guiding end 2 can automatically position with the target workpiece in the early stage of using the screw body 1, so as to ensure that the connection in the assembly will not be misaligned, optimize the speed during the production line assembly and reduce the defective rate, improve the overall efficiency of the production assembly. And the top of the guiding end 2 is a cylindrical structure that can be snap-fitted with the relief hole. The guiding end 2 can be completely snap-fitted inside the relief hole, thereby ensuring the contact area between the screw body 1 and the hole-like structure for mating connection. And corrosion-resistant coatings are provided on the surface of the guiding end 2 and the surface of the screw body 1 to improve the service performance of the guiding end 2 and the screw body 1 and extend the service life;

[0026] The composite elastic rod 3 includes a buffer spring 31, a composite sleeve plate 32, and a buffer rod 33. The composite sleeve plate 32 is composed of a damping ring 321 and a support sleeve plate 322. The top of the damping ring 321 is fixedly connected to the bottom of the support sleeve plate 322. The two ends of the buffer spring 31 are respectively fixedly connected between the bottom of the damping ring 321 and the top of the guiding end 2.

[0027] Working principle: When in use, in the early stage of locking the screw body 1 with the corresponding threaded hole in the target workpiece, the semi-circular structure at the bottom of the guiding end 2 first sleeved and guided with the corresponding threaded hole in the target workpiece to assist the operator in adjusting the vertical state of the screw body 1, creating favorable conditions for the subsequent smooth connection between the screw body 1 and the corresponding threaded hole in the target workpiece;

[0028] In the later stage after the corresponding threaded hole in the target workpiece is helically locked with the screw body 1, when the guiding end 2 contacts the inner wall of the bottom of the corresponding threaded hole in the target workpiece, it will be synchronously compressed and gradually retracted into the relief hole. After the screw body 1 is locked, the guiding end 2 is completely sleeved in the relief hole, and the buffer spring 31 contracts and deforms.

[0029] Embodiment 2

[0030] Please refer to Figures 1-5 , a positionable screw, including a screw body 1. A relief hole is opened inside the bottom of the screw body 1. A guiding end 2 and a composite elastic rod 3 are sleeved in the relief hole. The composite elastic rod 3 is located between the top of the guiding end 2 and the inner wall of the top of the relief hole, and the guiding end 2 can reciprocally sleeve and move in the relief hole under the elastic support of the composite elastic rod 3;

[0031] The bottom of the guiding end 2 is a hemispherical structure. The guiding end 2 can automatically position with the target workpiece in the early stage of using the screw body 1, so as to ensure that the connection in the assembly is not misaligned, optimize the speed during the production line assembly, reduce the defective rate, improve the overall efficiency of the production assembly. And the top of the guiding end 2 is a cylindrical structure that can be snap-fitted with the relief hole. The guiding end 2 can be completely snap-fitted inside the relief hole, thereby ensuring the contact area between the screw body 1 and the hole-like structure for mating connection. Moreover, corrosion-resistant coatings are provided on the surface of the guiding end 2 and the surface of the screw body 1 to improve the service performance of the guiding end 2 and the screw body 1 and extend the service life.

[0032] The composite elastic rod 3 includes a buffer spring 31, a composite sleeve plate 32, and a buffer rod 33. The composite sleeve plate 32 is composed of a damping ring 321 and a support sleeve plate 322. The top of the damping ring 321 is fixedly connected to the bottom of the support sleeve plate 322. The two ends of the buffer spring 31 are respectively fixedly connected between the bottom of the damping ring 321 and the top of the guiding end 2. The number of the buffer rods 33 is not less than two and they are all fixedly connected to the top of the guiding end 2. The buffer rods 33 can be in top-pressure contact with the bottom of the damping ring 321 after the guiding end 2 is completely sleeved in the relief hole, thereby realizing damping buffering.

[0033] Installation holes that are spatially communicated with the relief hole are provided on both sides of the middle part of the screw body 1. Threaded holes are provided on both sides inside the support sleeve plate 322. The two threaded holes are aligned with the two installation holes one by one. Inner screw sleeves 6 are snap-fitted in the two installation holes. One end of each of the two inner screw sleeves 6 is respectively threadedly connected in the two threaded holes, so as to detachably install the support sleeve plate 322 and the screw body 1. Thus, during the combined use of the composite elastic rod 3 and the guiding end 2 with the screw body 1, the independence of their own structures can be maintained, and subsequent convenient maintenance and replacement can be satisfied.

[0034] A guiding hole 4 that is spatially communicated with the relief hole is provided inside the top of the screw body 1. A constraint rod 5 is snap-fitted in the guiding hole. One end of the constraint rod 5 sequentially penetrates through the composite sleeve plate 32 and the buffer spring 31 and is fixedly connected to the top of the guiding end 2. By using the snap-fitting and guiding of the guiding hole 4 and the constraint rod 5, the stability of the guiding end 2 during the reciprocating sleeving movement in the relief hole can be improved.

[0035] An expanding pressure sleeve plate 7 is sleeved outside the top of the screw body 1 to expand the locking range of the overall device. The surface of the expanding pressure sleeve plate 7 is also provided with a corrosion-resistant coating to increase the corrosion-resistant service performance of the expanding pressure sleeve plate 7 and extend the service life.

[0036] Working principle: When in use, before the screw body 1 is locked with the corresponding threaded hole in the target workpiece, if the locking range needs to be increased, the expansion sleeve 7 can be assembled with the screw body 1 first. In the early stage of the locking of the screw body 1 with the corresponding threaded hole in the target workpiece, the semicircular structure at the bottom of the guide end 2 is first guided by the corresponding threaded hole in the target workpiece to assist the operator in adjusting the vertical state of the screw body 1, creating favorable conditions for the subsequent smooth connection of the screw body 1 with the corresponding threaded hole in the target workpiece. In the later stage after the corresponding threaded hole in the target workpiece is spirally locked with the screw body 1, the guide end 2 will be synchronously compressed and gradually shrink into the clearance hole after contacting the inner wall of the bottom of the corresponding threaded hole in the target workpiece. After the locking of the screw body 1 is completed, the guide end 2 is completely set in the clearance hole, and the buffer spring 31 shrinks and deforms;

[0037] In the subsequent assembly process, when the connection between the screw body 1 and the target workpiece is subjected to vibration, the guide end 2 will reciprocate and press the damping ring 321 through the buffer rod 33 to perform damping and buffering, thereby improving the long-term stability of the connection between the screw body 1 and the workpiece;

[0038] When the guide end 2 is damaged, the two inner screw sleeves 6 can be twisted to remove the two inner screw sleeves 6 from the inner spirals on both sides of the support sleeve plate 322, and then the composite elastic rod 3 and the guide end 2 can be directly poured out from the clearance hole.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present utility model, the fill pattern is only for distinguishing the layers, without any other limitation.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positionable screw, comprising a screw body (1), characterized in that: A clearance hole is provided in the bottom of the screw body (1), and a guide end (2) and a composite elastic rod (3) are sleeved in the clearance hole. The composite elastic rod (3) is located between the top of the guide end (2) and the top inner wall of the clearance hole, and the guide end (2) can be reciprocated and sleeved in the clearance hole under the elastic support of the composite elastic rod (3).

2. A positionable screw according to claim 1, characterized in that: The bottom of the guide end head (2) is a hemispherical structure, and the top of the guide end head (2) is a cylindrical structure capable of being engaged with the clearance hole.

3. A positionable screw according to claim 1, characterized in that: The guide end head (2) can be completely snapped into place inside the clearance hole, and the surface of the guide end head (2) and the surface of the screw body (1) are both provided with a corrosion-resistant coating.

4. A positionable screw according to claim 1, characterized in that: The composite elastic rod (3) comprises a buffer spring (31), a composite sleeve (32), and a buffer rod (33); the composite sleeve (32) comprises a damping ring (321) and a supporting sleeve (322); the top of the damping ring (321) is fixedly connected to the bottom of the supporting sleeve (322); and the two ends of the buffer spring (31) are respectively fixedly connected between the bottom of the damping ring (321) and the top of the guide end (2).

5. A positionable screw according to claim 4, characterized in that: The buffer rods (33) are provided in a number not less than two and are all fixedly connected to the top of the guide end head (2). After the guide end head (2) is completely inserted into the clearance hole, the buffer rods (33) can be in pressing contact with the bottom of the damping ring (321).

6. A positionable screw according to claim 4, characterized in that: Both sides of the middle of the screw body (1) are provided with mounting holes that can communicate with the clearance hole space, and both sides of the support sleeve (322) are provided with threaded holes, and the two threaded holes are aligned with the two mounting holes, and the two mounting holes are clamped with internal thread sleeves (6), and one end of the two internal thread sleeves (6) is respectively threadedly connected to the two threaded holes, so that the support sleeve (322) and the screw body (1) are detachably mounted.

7. A positionable screw according to claim 4, characterized in that: A guide hole (4) capable of communicating with the clearance hole space is provided in the top of the screw body (1), a restraining rod (5) is clamped in the guide hole, and one end of the restraining rod (5) passes through the composite sleeve plate (32) and the buffer spring (31) in sequence and is fixedly connected to the top of the guide end head (2).

8. The positionable screw according to claim 1, characterized in that: A pressure diffuser sleeve (7) is sleeved on the outer side of the top of the screw body (1), and a corrosion-resistant coating is also provided on the surface of the pressure diffuser sleeve (7).

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