High-strength through-wall screw
By arranging a threaded barrel on the outer sleeve of the screw to form an interlocking structure with the screw body, the problem of loosening and falling off of the through-wall screw under vibration and impact is solved, and the strength and service life of the screw are improved.
Patent Information
- Application Number
- CN202423061852.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing through-wall screws are prone to loosening and falling off under vibration and impact, resulting in uneven force, affecting service life and fixing strength.
A threaded barrel is arranged outside the screw body, and the thread direction of the threaded barrel is opposite to that of the screw body. After being screwed into the wall, an interlocking structure is formed, and the threaded barrel and the screw body are locked together in the wall.
It effectively reduces the loosening and falling of screws and uneven force, and improves the strength and service life of the screws.
Smart Images
Figure CN223459672U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to screw field, concretely relates to a high strength wall screw. BACKGROUND
[0002] The existing wall screw is screwed in the wall body through the thread, is fixed only through the friction between the thread and the wall body and the thread is unidirectional, when the wall body is subjected to vibration and impact etc., the wall screw is easily unbalanced, the wall screw is easily unbalanced, loose and falls off etc. SUMMARY
[0003] In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a high strength wall screw, by being provided with the thread cylinder to the screw body, the thread cylinder is opposite with the thread direction of screw body, after the screw body is screwed in the wall body, the thread cylinder is also screwed into the wall body, the thread cylinder and the thread body form interlocking structure at this time, and the wall body is locked firmly, effectively reduce the screw body loose, unbalanced force condition occurs, realize the improvement of the strength of screw.
[0004] The utility model provides a high strength wall screw, including screw body, the screw body includes, first thread, first thread is arranged on screw body, thread cylinder, its sliding sleeve is established on the head of screw body, the outer wall of thread cylinder is equipped with second thread, second thread is opposite with the thread direction of first thread, the opening of thread cylinder one end is equipped with second plug -in block in matching, second plug -in block is inserted and fixed on the opening, the cross recess is opened in second plug -in block, the opening of thread cylinder other end is equipped with thread cylinder tip, the screw body is screwed into the wall body, and second plug -in block is inserted and fixed to the opening, and the second plug -in block is rotated so that the thread cylinder is screwed into the wall body, and the thread cylinder and screw body are located in the wall body and form interlocking assembly.
[0005] Optionally, the inner wall of the thread cylinder is provided with an anti-skid coating.
[0006] Optionally, the side surface of the thread cylinder tip is provided with a cutting surface.
[0007] Optionally, the screw body is further provided with a barb, and the barb is hinged to the screw body near the nut end to replace the first thread.
[0008] Optionally, the barb elastic expansion mechanism is slidably connected to the screw body near the nut end, the barb elastic expansion mechanism comprises an expansion part and a limiting part, the expansion part comprises a sliding ring slidably connected to the screw body near the nut end, one end of the sliding ring is fixedly connected with the limiting part, the other end of the sliding ring is fixedly connected with a spring set, the spring set is fixedly connected with the screw body, a sliding telescopic rod is fixedly connected to the sliding ring, a sliding groove is formed in the side wall of the barb, the sliding telescopic rod slides in the sliding groove, and the spring set transversely pulls the sliding telescopic rod to make the barb flip and expand.
[0009] Optionally, the number of the barbs is at least two, and the number of the sliding telescopic rods is the same as that of the barbs.
[0010] Optionally, the limiting part comprises a stop rod, one end of the stop rod is fixedly connected with the sliding ring, the outer surface of the head of the screw body is provided with a clamping groove, the other end of the stop rod extends through the head of the screw body into the clamping groove, a clamping block is rotatably connected to the part of the stop rod in the clamping groove, the clamping block is provided with a clamping block fixing rod, the clamping block fixing rod is inserted and fixed in the clamping groove through the clamping block, the clamping groove is provided with an opening, and after the clamping block fixing rod is separated from the clamping block, the clamping block is rotated to the position corresponding to the opening, and the spring set pulls the stop rod to slide in the opening.
[0011] Optionally, the clamping groove is provided with a buckling cover.
[0012] Optionally, the threaded barrel is provided with a slot at one end of the second insertion block, the second insertion block is provided with a matching limiting block, and the limiting block is inserted into the slot.
[0013] Optionally, the cross recess is provided with an anti-skid coating.
[0014] Compared with the prior art, the technical scheme provided by the embodiment of the utility model has the following advantages: the threaded barrel is sleeved on the screw body, the threaded direction of the threaded barrel is opposite to that of the screw body, after the screw body is screwed into the wall, the threaded barrel is also screwed into the wall, at this time, the threaded barrel and the threaded body form a mutual locking structure, which is stably locked in the wall, effectively reducing the loosening and falling off of the screw body, and the uneven stress condition, and improving the strength of the screw. BRIEF DESCRIPTION OF DRAWINGS
[0015] The drawings incorporated into the specification and forming part of the specification, show the embodiments consistent with the utility model, and together with the specification, are used to explain the principle of the utility model.
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. Obviously, for those skilled in the art, based on these drawings, other drawings can also be obtained without creative effort.
[0017] Figure 1 It is a structural schematic diagram of a high-strength wall screw of the present application.
[0018] Figure 2 It is Figure 1 It is a three-dimensional structural schematic diagram of a screw body shown in the figure.
[0019] Figure 3 It is Figure 1 It is a three-dimensional structural schematic diagram of a threaded barrel shown in the figure.
[0020] Figure 4 It is Figure 1 It is a three-dimensional structural schematic diagram of a slotted threaded barrel shown in the figure.
[0021] Figure 5 It is Figure 1 It is a three-dimensional structural schematic diagram of a second plug-in block shown in the figure.
[0022] Figure 6 It is Figure 1 It is an enlarged structural schematic diagram of a at shown in the figure.
[0023] Figure 7 It is Figure 4 It is a structural schematic diagram of a barb elastic expansion mechanism shown in the figure.
[0024] Figure 8 It is Figure 4 It is a structural schematic diagram of a barb elastic expansion mechanism shown in the figure.
[0025] Explanation of reference signs
[0026] 1, screw body; 11, first thread; 12, barb; 2, threaded barrel; 21, second thread; 22, threaded barrel tip; 23, slot; 3, barb elastic expansion mechanism; 31, sliding ring; 311, sliding telescopic rod; 32, spring group; 33, stop rod; 331, clamping block; 34, clamping block fixing rod; 35, buckling cover; 4, second plug-in block; 41, cross recess. DETAILED DESCRIPTION
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. Obviously, for those skilled in the art, based on these drawings, other drawings can also be obtained without creative effort.
[0028] Many particular details are set forth in the following description in order to provide a thorough understanding of the application. However, the application can be practiced according to other embodiments that depart from the details described herein; obviously, the embodiments described in the specification are only a part of all possible embodiments of the application, and not all possible embodiments are described in the specification.
[0029] In combination with Figures 1 to 8 The high-strength wall screw provided by the embodiment of the application comprises a screw body 1, which comprises a first thread 11 arranged on the screw body 1, and a threaded cylinder 2 which is sleeved on the head of the screw body 1 and has a second thread 21 arranged on the outer wall of the threaded cylinder 2, the threaded direction of the second thread 21 being opposite to that of the first thread 11, an opening at one end of the threaded cylinder 2 being provided with a second plug-in block 4 which is fixedly plugged into the opening, a cross-shaped groove 41 being arranged on the second plug-in block 4, and an opening at the other end of the threaded cylinder 2 being provided with a threaded cylinder tip 22, the screw body 1 being screwed into the wall, the second plug-in block 4 being fixedly plugged into the opening, and the threaded cylinder 2 being screwed into the wall by rotating the second plug-in block 4, the threaded cylinder 2 and the screw body 1 forming an interlocking assembly in the wall.
[0030] The inner wall of the threaded cylinder 2 is provided with an anti-skid coating, which can reduce the friction on the inner wall of the threaded cylinder 2 when the screw body 1 is screwed into the wall, and the side surface of the threaded cylinder tip 22 is provided with a cutting surface, which can improve the efficiency of the threaded cylinder tip 22 entering the wall.
[0031] Therefore, by sleeving the threaded cylinder on the screw body, the threaded direction of the threaded cylinder is opposite to that of the screw body, the threaded cylinder is also screwed into the wall after the screw body is screwed into the wall, the threaded cylinder and the screw body form an interlocking structure at this time, and are stably locked in the wall, which effectively reduces the loosening and uneven force of the screw body, and improves the strength of the screw.
[0032] In some embodiments, as Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, the screw body 1 is also provided with barbs 12, which are hinged to the screw body 1 near the nut end instead of the first thread 11, and further comprises a barb elastic expansion mechanism 3, which is slidingly connected to the screw body 1 near the nut end. The barb elastic expansion mechanism 3 comprises an expansion part and a limiting part. The expansion part comprises a sliding ring 31, which is slidingly connected to the screw body 1 near the nut end. One end of the sliding ring 31 is fixedly connected with the limiting part, and the other end of the sliding ring 31 is fixedly connected with a spring set 32. The spring set 32 is fixedly connected with the screw body 1. A sliding telescopic rod 311 is fixedly connected with the sliding ring 31. A sliding groove is formed in the side wall of the barb 12. The sliding telescopic rod 311 slides in the sliding groove. The spring set 32 horizontally pulls the sliding telescopic rod 311 to make the barb 12 flip and expand.
[0033] The limiting part comprises a stop rod 33, one end of which is fixedly connected with the sliding ring 31. The outer surface of the head of the screw body 1 is provided with a clamping groove. The other end of the stop rod 33 extends through the head of the screw body 1 into the clamping groove. A clamping block 331 is rotationally connected to the part of the stop rod 33 located in the clamping groove. The clamping block 331 is provided with a clamping block fixing rod 34, which is inserted and fixed in the clamping groove through the clamping block 331. An opening is formed in the clamping groove. After the clamping block fixing rod 34 is pulled away from the clamping block 331, the clamping block 331 is rotated to the position corresponding to the opening. The spring set 32 pulls the stop rod 33 to slide in the opening.
[0034] As shown, the number of barbs 12 is at least two, and the number of sliding telescopic rods 311 is the same as that of barbs 12. This prevents the screw body 1 from being tilted due to uneven force caused by only one barb. A buckling cover 35 is assembled outside the clamping groove to prevent dust and moisture from entering the screw body 1 and to reduce the service life of the screw.
[0035] As shown, the buckling cover 35 is opened, the clamping block fixing rod 34 is pulled out, and the clamping block 331 is rotated to the opening. At this time, the limiting effect of the stop rod 33 disappears, the spring set 32 drives the sliding ring 31 to slide, and further drives the sliding telescopic rod 311 to slide in the barb 12. With the sliding of the sliding telescopic rod 311, the flip angle of the barb 12 becomes larger and larger until it is embedded in the wall.
[0036] As shown in some embodiments, Figure 4 and Figure 5 As shown, the threaded cylinder 2 is provided with an opening with a groove 23 at one end of the second insertion block 4. The second insertion block 4 is provided with a matching limiting block, which is inserted into the groove 23.
[0037] As shown, the cross-shaped groove 41 is provided with a non-slip coating to prevent the tightening device from falling out of the cross-shaped groove 41 and reduce the efficiency of tightening.
[0038] Therefore, after the screw body 1 is completely screwed into the wall, the second plug-in block 4 is inserted into the opening of the threaded barrel 2. Since the limit block is stuck in the slot 23 on the threaded barrel 2, when the tightening device rotates the second plug-in block 4, the threaded barrel 2 is driven to rotate. At this time, the threaded barrel 2 is inserted into the wall through the tip 22 of the threaded barrel.
[0039] The following is combined with Figures 1-8 Describe a specific embodiment of the utility model:
[0040] like Figures 1-8 As shown, it includes a screw body 1, which includes a first thread 11, which is arranged on the screw body 1, a threaded barrel 2, which is slidably sleeved on the head of the screw body 1, and an outer wall of the threaded barrel 2 is provided with a second thread 21, and the second thread 21 is opposite to the thread direction of the first thread 11. The opening at one end of the threaded barrel 2 is matched with a second plug-in block 4, and the second plug-in block 4 is plugged and fixed on the opening. A cross groove 41 is provided on the second plug-in block 4, and a threaded barrel tip 22 is provided at the opening at the other end of the threaded barrel 2. The screw body 1 is screwed into the wall, and the second plug-in block 4 is plugged and fixed to the opening. The second plug-in block 4 is rotated to screw the threaded barrel 2 into the wall. The threaded barrel 2 and the screw body 1 are located in the wall to form an interlocking tightening component.
[0041] In actual use, the screw body 1 is aligned with the cross opening of the screw body 1 by the tightening device, and the screw body 1 is rotated into the wall. The barb 12 is embedded in the inner wall of the wall to hook the screw body 1. After the screw body 1 is completely screwed into the wall, the second plug-in block 4 is plugged into the opening of the threaded barrel 2. Since the limit block is stuck in the slot 23 on the threaded barrel 2, when the tightening device rotates the second plug-in block 4, the threaded barrel 2 is driven to rotate. At this time, the threaded barrel 2 is entered into the wall through the tip 22 of the threaded barrel. After the threaded barrel 2 is completely entered into the wall, When the locking lever 31 is unlocked, the locking lever 331 is unlocked and the locking lever 332 is unlocked, and the locking lever 332 is unlocked.
[0042] It is to be noted that, in the present document, relational terms such as "first" and "second", and the like can be used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0043] The foregoing is merely illustrative of the principles of the application and various modifications can be made by persons skilled in the art without departing from the scope and nature of the application as disclosed in the foregoing description and daims. The application is not limited to the embodiments described herein but can be used with and / or in numerous other applications, alternatives and adaptations thereof. Accordingly, the application is not to be restricted, except in the spirit or scope of the claims appended hereto.
Claims
1. A high-strength through-wall screw comprising a screw body (1), characterized in that, The screw body (1) comprises a first thread (11) arranged on the screw body (1); A threaded barrel (2) is sleeved on the head of the screw body (1), and the outer wall of the threaded barrel (2) is provided with a second thread (21) opposite to the first thread (11) in the thread direction; An opening at one end of the threaded barrel (2) is provided with a second plug-in block (4) which is plug-in fixed on the opening, and a cross groove (41) is arranged on the second plug-in block (4); and an opening at the other end of the threaded barrel (2) is provided with a threaded barrel tip (22). The screw body (1) is screwed into the wall, the second plug-in block (4) is plug-in fixed on the opening, and the second plug-in block (4) is rotated to make the threaded barrel (2) screwed into the wall, and the threaded barrel (2) and the screw body (1) form an interlocking assembly in the wall.
2. The high-strength wall screw of claim 1, wherein, The inner wall of the threaded barrel (2) is provided with an anti-skid coating.
3. The high-strength wall screw of claim 1, wherein, The side surface of the threaded barrel tip (22) is provided with a cutting surface.
4. The high-strength wall screw of claim 1, wherein, The screw body (1) is further provided with a barb (12) which is hinged on the screw body (1) near the cap end instead of the first thread (11).
5. The high-strength wall screw of claim 4, wherein, A barb elastic expansion mechanism (3) is further provided, which is slidingly connected to the screw body (1) near the cap end, and the barb elastic expansion mechanism (3) comprises an expansion part and a limiting part, wherein the expansion part comprises: A sliding ring (31) is slidingly connected to the screw body (1) near the cap end, one end of the sliding ring (31) is fixedly connected with the limiting part, the other end of the sliding ring (31) is fixedly connected with a spring set (32), and the spring set (32) is fixedly connected with the screw body (1); A sliding telescopic rod (311) is fixedly connected to the sliding ring (31), a sliding groove is arranged on the side wall of the barb (12), the sliding telescopic rod (311) slides in the sliding groove, and the spring set (32) transversely pulls the sliding telescopic rod (311) to make the barb (12) flip and expand.
6. The high-strength wall screw of claim 5, wherein, The number of the barbs (12) is at least two, and the number of the sliding telescopic rods (311) is the same as that of the barbs (12).
7. The high-strength wall screw of claim 5, wherein, The limiting part comprises: A stop rod (33) has one end fixedly connected with the sliding ring (31), and the other end of the stop rod (33) extends through the head of the screw body (1) into a clamping groove arranged on the outer surface of the head of the screw body (1); A clamping block (331) is rotationally connected to the part of the stop rod (33) located in the clamping groove, and a clamping block fixing rod (34) is arranged on the clamping block (331) and plug-in fixed in the clamping groove; An opening is arranged on the clamping groove, and after the clamping block fixing rod (34) is separated from the clamping block (331), the clamping block (331) is rotated to the position corresponding to the opening, and the spring set (32) pulls the stop rod (33) to slide in the opening.
8. The high-strength wall screw of claim 7, wherein, A buckling cover (35) is assembled outside the clamping groove.
9. The high-strength wall screw of claim 1, wherein, The threaded cylinder (2) is provided with an opening slot (23) at one end of the second plug-in block (4), and the second plug-in block (4) is provided with a matched limiting block which is plugged into the opening slot (23).
10. The high-strength wall screw of claim 1, wherein, The cross recess (41) is provided with an antiskid coating.