Nut protective cap

Abstract

A nut protection cap relates to the technical field of nut protection devices and comprises a threaded connection portion, a nut containing portion and a bolt tail containing portion, and the surface of an inner cavity of the threaded connection portion is provided with internal threads. A nut accommodating space is formed in the nut accommodating part; the upper side of the nut containing space communicates with an inner cavity of the threaded connecting part, and the nut containing space is provided with a downward opening. The bolt tail containing part is arranged on the upper side of the threaded connecting part, and a bolt end containing space is formed in the bolt tail containing part; wherein the lower part of the bolt tail accommodating part is provided with a tail end connecting part connected with the threaded connecting part, so that the bolt tail accommodating part shields the tail end exposed from the upper end of the nut; and the bolt tail accommodating part is in threaded connection with the threaded connecting part through the tail end connecting part to adapt to the working conditions of different tail end lengths.

Description

Technical Field

[0001] The utility model relates to the technical field of nut protection devices, in particular to a nut protection cap. Background Art

[0002] When installing wind turbines, street lamps and other mechanical equipment, the bases of wind turbines and street lamps have exposed nuts and anchor rods extending out of the end faces of the bases. If the nuts and anchor rods are not protected, they will rust and become difficult to remove.

[0003] During construction, the depth of the anchor bolt buried underground often varies, resulting in different lengths of the bolt head exposed outside the nut, causing the bottom of the nut protective cap to not completely cover the nut, and thus failing to provide protection. For example, the Chinese utility model patent with publication number CN213744390U discloses a bolt and nut protective cap, which includes a hollow cap body with an opening at one end, a bolt cavity and a nut cavity coaxially arranged in the cap body, the nut cavity communicating with the opening and the bolt cavity, and a plurality of self-tapping connecting ribs adapted to the bolts protruding radially from the inner wall of the bolt cavity, the self-tapping connecting ribs extending along the length direction of the bolt cavity.

[0004] In addition, some prior art bolt and nut protective caps are provided with internal threads that are threaded with the bolt head. For example, the Chinese utility model patent with publication number CN202165379U discloses a bolt and nut protective cap, including a hollow cap body with an open end, in which a cylindrical bolt cavity and a nut cavity are coaxially arranged from the inside to the outside in the cap body, the inner diameter of the bolt cavity is smaller than the inner diameter of the nut cavity, and a thread is arranged in the bolt cavity. In the case of different lengths of the bolt heads, excessive rotation of the above-mentioned threads will cause the top of the nut protective cap to be damaged, and the nut protective cap will lose its protective function. Utility Model Content

[0005] The utility model provides a nut protective cap for the above-mentioned technical problems existing in the prior art, which adopts a threaded connection structure with adjustable height and is suitable for working conditions where the length of the tail end of the bolt exposed from the upper end of the nut is different or the thickness of the nut is different.

[0006] In order to achieve the above technical objectives, one aspect of the embodiment of the utility model provides a nut protective cap, comprising:

[0007] A threaded connection portion, the inner surface of which has internal threads;

[0008] a nut accommodating portion, wherein the nut accommodating portion has a nut accommodating space; the upper side of the nut accommodating space is communicated with the inner cavity of the threaded connection portion, and the nut accommodating space has an orifice open downward; and

[0009] The bolt tail accommodating portion is arranged on the upper side of the threaded connection portion, and the bolt tail accommodating portion has a bolt end accommodating space; wherein,

[0010] The lower part of the bolt tail accommodating part is provided with a tail end connecting part connected to the threaded connecting part, so that the bolt tail accommodating part covers the tail end exposed from the upper end of the nut; the bolt tail accommodating part and the threaded connecting part are threadedly connected through the tail end connecting part.

[0011] In some embodiments, the tail end connection portion includes an internal thread formed on an inner contour surface of the bolt tail receiving portion, and an external thread formed on an outer surface of the threaded connection portion and connected to the internal thread.

[0012] In some embodiments, the tail end connection portion includes an external thread formed on an outer contour surface of the bolt tail receiving portion, and an internal thread formed on an inner contour surface of the threaded connection portion and connected to the external thread.

[0013] In some embodiments, an outer surface of the bolt tail receiving portion is provided with an anti-slip structure.

[0014] Another aspect of the present invention provides a nut protective cap, comprising:

[0015] A nut receiving portion having a nut receiving space therein, wherein the nut receiving space has an opening open downward;

[0016] The telescopic cylinder has a cylindrical structure, and the telescopic cylinder is connected to the nut accommodating portion through threads.

[0017] Furthermore, the inner cavity surface of the threaded connection portion has internal threads; the upper side of the nut accommodating space is communicated with the inner cavity of the threaded connection portion; and

[0018] The bolt tail accommodating portion is arranged on the upper side of the threaded connecting portion, and the bolt tail accommodating portion has a bolt end accommodating space therein.

[0019] Furthermore, the inner contour of the telescopic cylinder is provided with an internal thread, and the outer contour of the nut accommodating portion is provided with an external thread threadably connected to the internal thread.

[0020] Furthermore, the outer contour of the telescopic cylinder is provided with an external thread, and the inner contour of the nut accommodating portion is provided with an internal thread threadably connected to the external thread.

[0021] Furthermore, a flange portion is provided at the lower end of the telescopic cylinder, and the flange portion extends radially outward and axially downward at the same time.

[0022] Furthermore, the outer contour of the telescopic cylinder is provided with an anti-slip structure.

[0023] One or more technical solutions provided in the embodiments of the utility model have at least the following technical effects or advantages: in the utility model, the bolt tail accommodating portion and the threaded connecting portion are connected by a thread, and the height of the bolt end accommodating space is adjusted by adjusting the number of screw threads between the bolt tail accommodating portion and the threaded connecting portion, thereby adapting to working conditions with different heights of the tail end of the bolt extending from the upper end of the nut.

[0024] In the utility model, the telescopic cylinder is threadedly connected to the nut accommodating portion, and the height of the nut accommodating space is adjusted by adjusting the number of threads of the telescopic cylinder and the nut accommodating portion, thereby adapting to working conditions with different nut thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the installation structure of the nut protective cap according to the first embodiment of the utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the telescopic part of an embodiment of the first embodiment of the utility model. Figure 3 It is a schematic structural diagram of the telescopic part of another embodiment.

[0027] Figure 4 This is a schematic diagram of the appearance structure of a nut protective cap according to the first embodiment of the utility model.

[0028] Figure 5 It is a cross-sectional view of a nut protective cap according to the first embodiment of the utility model.

[0029] Figure 6 It is a bottom view of the nut protective cap according to the first embodiment of the utility model.

[0030] Figure 7 This is a schematic diagram of an application scenario of a nut protective cap according to the first embodiment of the utility model.

[0031] Figure 8 It is a cross-sectional view of a nut protective cap of an example in the second implementation manner of the utility model.

[0032] Fig. 9 It is a cross-sectional view of a nut protective cap of another embodiment of the second implementation manner of the utility model.

[0033] Fig.10 It is a cross-sectional view and a partially enlarged view of a nut protective cap of an embodiment of the third implementation mode of the utility model.

[0034] Fig.11 It is a cross-sectional view of a nut protective cap of another embodiment of the third implementation manner of the present utility model.

[0035] Fig.12It is a cross-sectional view and a partially enlarged view of a nut protective cap of an embodiment of the fourth implementation mode of the utility model.

[0036] Fig.13 It is a cross-sectional view of a nut protective cap of an embodiment of the fifth implementation mode of the present utility model.

[0037] Fig.14 It is a cross-sectional view of a nut protective cap of another embodiment of the fifth implementation mode of the present utility model.

[0038] Description of Reference Numerals

[0039] 1, 2, 3, 4, 5-nut protective cap, 101-nut accommodating portion, 1011-second convex structure, 1012-second concave structure, 102-nut accommodating space, 103-threaded connecting portion, 104-telescopic portion, 1041-first convex structure, 1042-first concave structure, 105-bolt end accommodating space, 106-operating portion, 107, 107'-communication channel, 108, 508-flanged portion, 109-orifice, 110-inner end surface, 111, 211, 311, 411, 511-top wall;

[0040] 202, 302, 402-first connecting portion, 203, 303, 403-second connecting portion, 204, 304, 404-bolt tail accommodating portion, 305-annular protrusion, 306-annular groove;

[0041] 405-claw, 406-tooth;

[0042] 501-nut receiving portion, 502-telescopic cylinder, 503-threaded connection portion,

[0043] 100-bolt connection assembly, 10-bolt, 11-tail end, 20-nut, 30-washer, 40-lamp pole, 41-flange, 50-filling medium;

[0044] P-installation plane, AA'-center axis. DETAILED DESCRIPTION

[0045] Other objects and advantages of the present invention will become apparent through explanation of the following preferred embodiments of the present application.

[0046] First embodiment

[0047] Figure 1 This is a schematic diagram of the installation structure of the nut protective cap according to the first embodiment of the utility model.

[0048] like Figure 1As shown, the nut protective cap 1 is sleeved on the outside of the bolt connection assembly 100, and the bolt connection assembly 100 includes the tail end 11 of the bolt 10 and the nut 20. In some embodiments, the bolt connection assembly 100 also includes a washer 30 installed between the nut 20 and the installation plane P. The bolt 10 can be, for example, an anchor bolt, a hexagonal head bolt, etc., which is not particularly limited in this application.

[0049] like Figure 1 As shown, the nut protective cap 1 includes a nut accommodating portion 101, a threaded connection portion 103 and a telescopic portion 104. The inner cavity surface of the threaded connection portion 103 has an internal thread. The internal thread can be threadedly connected to the tail end 11 of the bolt 10 extending from the upper end of the nut 20. Therefore, the nut protective cap 1 of the present application can be installed on the bolt 10 by rotation. This installation method is more secure than the technical solution of simply putting the nut protective cap 1 on the bolt 10 and the nut 20.

[0050] A nut receiving portion 101 is provided at the lower side of the threaded connection portion 103. The nut receiving portion 101 has a nut receiving space 102 for receiving the nut 20. The upper side of the nut receiving space 102 is communicated with the inner cavity of the threaded connection portion 103, and the nut receiving space 102 has an orifice 109 open downward. When the nut protective cap 1 is installed, the nut protective cap 1 is covered on the outer side of the nut 20 and the tail end 11 of the protruding bolt 10 through the open orifice 109.

[0051] The telescopic portion 104 is disposed on the upper side of the threaded connection portion 103, and a bolt end accommodating space 105 is provided in the telescopic portion 104. The top of the telescopic portion 104 has a top wall 111, and the distance between the top wall 111 and the threaded connection portion 103 is set to be able to extend or shorten according to the length of the end portion of the bolt 10 extending from the upper end of the nut 20 (hereinafter referred to as the tail end 11).

[0052] The present application does not particularly limit the shape of the top wall 111 , and it may be, for example, an upwardly convex arc shape, or a planar structure.

[0053] In the nut protective cap 1 of the present embodiment, the length of the telescopic portion 104 can be changed according to the length of the tail end 11 , thereby preventing the nut protective cap 1 from being damaged by the tail end 11 .

[0054] Figure 2 This is a schematic diagram of the structure of the telescopic portion 104 of an embodiment of the first implementation mode of the utility model. Figure 3 FIG. 1 is a schematic structural diagram of the telescopic portion 104 according to another embodiment.

[0055] For example, in some embodiments, Figure 2As shown, the telescopic portion 104 has a first convex structure 1041 along the radial direction, and the first convex structure 1041 is arranged around the entire circumference of the telescopic portion 104. In another embodiment, as shown in FIG. Figure 3 As shown, the telescopic portion 104 has a first concave structure 1042 that is concave inwardly along the radial direction, and the first concave structure 1042 is disposed around the entire circumference of the telescopic portion 104 .

[0056] The nut protective cap is screwed onto the tail end 11 of the bolt 10. When the tail end 11 is too long, the upper surface of the end of the bolt 10 abuts against the lower surface of the top wall 111 of the nut protective cap 1. The first convex structure 1041 or the first concave structure 1042 allows the telescopic part 104 to deform and thus extend or shorten according to the length of the tail end 11 of the bolt 10.

[0057] In order to improve the telescopic ability of the telescopic portion 104, the present disclosure further provides a stacked first concave structure 1042 and / or a first convex structure 1041. For example, in some embodiments, the first concave structure 1042 is stacked along the up-down direction. Alternatively, the first convex structure 1041 is stacked along the up-down direction. Alternatively, the first concave structure 1042 and the first convex structure 1041 are stacked along the up-down direction. The stacked structure allows the telescopic portion 104 to have a greater deformation ability. For another example, Figure 1 As shown, the first inner concave structure 1042 and the first outer convex structure 1041 of the telescopic portion 104 are alternately stacked in the up-and-down direction to form a bellows shape.

[0058] Figure 4 This is a schematic diagram of the appearance structure of the nut protective cap 1 according to the first embodiment of the utility model.

[0059] In some embodiments, Figure 4 As shown, the nut protective cap 1 includes a nut accommodating portion 101, an operating portion 106 and a telescopic portion 104 from bottom to top. A flange portion 108 is provided at the bottom of the nut accommodating portion 101. A top wall 111 is provided at the top of the telescopic portion 104.

[0060] In the present disclosure, an operating portion 106 extending in the up-down direction is provided on the outer contour of the nut protective cap 1, and the nut protective cap can be screwed onto the tail end 11 of the bolt 10 through the operating portion 106. The operating portion 106 serves to facilitate the application of torque to the nut protective cap 1. Structurally, the outer peripheral surface of the operating portion 106 can be, for example, an outer hexagonal shape. The shape of the outer peripheral surface of the operating portion 106 can be cylindrical, or a shape that is convenient for applying torque to the nut protective cap, such as a prismatic shape or a cylindrical shape with anti-slip grooves, or a structure such as a groove or a protrusion formed on the outside of the nut protective cap 1. This application does not make any special restrictions on this.

[0061] Furthermore, the operating portion 106 may be formed at a position corresponding to the threaded connection portion 103 .

[0062] In some embodiments, Figure 1 As shown, in order to improve the protection effect of the bolt 10 and the nut 20 and prevent rust, a filling medium 50 is set in the nut accommodating space 102 and the bolt end accommodating space 105. The filling medium 50 is preferably grease, such as butter.

[0063] Figure 5 It is a cross-sectional view of the nut protective cap 1 according to the first embodiment of the utility model. Figure 6 It is a bottom view of the nut protective cap 1 according to the first embodiment of the utility model.

[0064] like Figure 5 and Figure 6 As shown, in this embodiment, in order to facilitate the overflow of grease and the discharge of air in the bolt end accommodating space 105 when connected with the bolt 10, in this application, a connecting channel 107 connecting the nut accommodating space 102 and the bolt end accommodating space 105 is provided in the nut protective cap 1. For example, the connecting channel 107 can be formed as a groove that cuts off the internal thread in the direction of connecting the nut accommodating space 102 and the bolt end accommodating space 105, and the groove cuts off the internal thread along the substantially up and down direction, and can be further cut to below the groove bottom of the internal thread. When the nut protective cap is screwed with the end of the bolt 10, the connecting channel 107 crosses the thread outside the thread of the bolt 10, and connects the nut accommodating space 102 and the bolt end accommodating space 105. When the nut protective cap is tightened, the bolt end accommodating space 105 is closed with the bolt 10 and the internal thread screwed therewith, and the grease and air are squeezed and flow from the above-mentioned connecting channel 107 to the nut accommodating space 102.

[0065] In addition, if Figure 5 As shown, the communication channel 107 ′ may also be a through hole formed in the side wall of the threaded connection portion 103 and extending in the direction of connecting the nut accommodating space 102 and the bolt end accommodating space 105 .

[0066] It should be noted that the above-mentioned communication channel 107 and communication channel 107 ′ are different technical solutions, and they can be applied alone or in combination during specific implementation.

[0067] In actual construction, there are also situations where the thickness of the nut 20 is different. For example, nuts 20 of normal thickness are used in some working conditions, while thin nuts 20 or thickened nuts 20 are used in other working conditions. In the prior art, nut protective caps of the same specification are difficult to meet the use requirements of the above working conditions at the same time, which increases the types of specifications of the nut protective caps 1 and reduces interchangeability.

[0068] In order to solve the above technical problems, the present application sets a telescopic structure on the wall of the nut accommodating portion 101, for example, Figure 1 As shown, the wall of the nut receiving portion 101 has a second concave structure 1012 that is concave in the radial direction, and the second concave structure 1012 is arranged around the entire circumference of the nut receiving portion 101. For another example, the nut receiving portion 101 has a second convex structure 1011 that is concave in the radial direction, and the second convex structure 1011 is arranged around the entire circumference of the nut receiving portion 101.

[0069] In the process of installing the nut protective cap 1 on the bolt 10, the nut protective cap 1 is firstly fitted on the outer sides of the nut 20 and the bolt 10, and the nut protective cap 1 is rotated so that the internal thread of the threaded connection portion 103 in the nut protective cap 1 is connected with the external thread of the tail end 11 of the bolt 10. The nut protective cap 1 is continuously rotated, and the edge of the orifice 109 at the lower end of the nut receiving portion 101 contacts the installation plane P. Then, as the screwing depth of the nut protective cap 1 and the tail end 11 of the bolt 10 increases, the telescopic structure is squeezed and deformed until the inner end face 110 abuts against the upper end face of the nut 20, thereby being able to meet the protection needs of nuts 20 of different thicknesses.

[0070] In this embodiment, since the telescopic structure is deformed, it is possible to provide a pressing force to press the lower end opening 109 of the nut receiving portion 101 onto the mounting plane and keep the opening 109 in contact with the mounting plane P. Even if the mounting plane P is uneven, the opening 109 can be deformed by the above-mentioned pressing force to adapt to the unevenness of the mounting plane. The above-mentioned pressing force is conducive to isolating the interior of the nut protective cap 1 from the external space, and plays a role in preventing the tail end 11 and the nut 20 from rusting.

[0071] In order to improve the sealing effect between the orifice 109 and the mounting plane, as Figure 1 As shown, in some embodiments, the edge of the orifice 109 of the nut receiving portion 101 extends radially outward and axially downward to form a flange portion 108. After the nut waterproof cap is screwed onto the tail end 11 of the bolt 10, the flange portion 108 tends to deform in the horizontal direction to form an annular contact surface with the mounting plane P. The sealing performance between the inner space of the nut waterproof cap and the atmosphere can be improved by means of the filling medium 50. Even if the mounting plane P has certain convexities and concavities, the sealing can be maintained due to the adaptive deformation of the edge of the flange portion 108.

[0072] In addition, when there is water accumulated on the outside of the nut protective cap 1, the pressure F of the accumulated water acts on the surface of the flange portion 108 located on the outside of the nut protective cap 1, further increasing the contact force between the edge of the flange portion 108 and the mounting plane, thereby improving the sealing ability between the edge of the flange portion 108 and the mounting plane, and the greater the pressure F, the stronger the sealing ability.

[0073] In some embodiments, in order to further improve the telescopic deformation capability of the telescopic structure, the telescopic structure has a variety of preferred technical solutions. For example, the second concave structure 1012 and the second convex structure 1011 are stacked in the up-down direction. For another example, the second concave structure 1012 is stacked in the up-down direction. For another example, the second convex structure 1011 is stacked in the up-down direction. Further, the second concave structure 1012 and the second convex structure 1011 of the nut accommodating portion 101 are alternately stacked in the up-down direction to form a bellows-like structure.

[0074] Figure 7 This is a schematic diagram of an application scenario of the nut protective cap 1 according to the first embodiment of the utility model.

[0075] The nut protective cap 1 of the present application can be applied to Figure 7 In the scene shown, most of the anchor bolt is pre-buried underground, and a plurality of through holes are provided on the flange 41 at the lower part of the lamp pole 40, through which the upper end of the anchor bolt passes and is exposed. The nut 20 is threadedly connected with the exposed part of the anchor bolt, thereby fixing the flange 41 and the lamp pole 40. At this time, the upper surface of the flange 41 becomes the installation plane P.

[0076] from Figure 7 It can be seen from the figure that the telescopic portion 104 of the nut protective cap 1 of this embodiment can be extended or shortened according to the length of the anchor bolt exposed outside the nut 20. Therefore, the telescopic portion 104 in this embodiment can be used as a bolt tail accommodating portion.

[0077] The telescopic structure can be extended or shortened according to the thickness of the nut 20. Therefore, the nut protective cap 1 of this embodiment can adapt to the working conditions where the exposed length of the outer tail end 11 of the bolt 10 is different, and can also adapt to the working conditions where the thickness of the nut 20 is different. The nut protective cap 1 disclosed in the present invention has strong interchangeability, thereby effectively reducing the number of specifications and reducing inventory.

[0078] Second embodiment

[0079] The difference between the nut protective cap 2 of this embodiment and the first embodiment is that the nut protective cap 2 of this embodiment has a split structure.

[0080] Figure 8 It is a cross-sectional view of a nut protective cap 2 of an example of the second embodiment of the utility model.

[0081] For example, in some embodiments, Figure 8 As shown, the bolt tail accommodating portion 204 and the threaded connecting portion 103 have a separate structure, and the bolt tail accommodating portion 204 and the threaded connecting portion 103 are connected via a tail end connecting portion.

[0082] The tail end connection part includes a first connection part 202 formed at the lower end of the bolt tail receiving part 204, and the first connection part 202 has an internal thread. Correspondingly, the tail end connection part also includes a second connection part 203 formed at the upper end of the threaded connection part 103, and the second connection part 203 has an external thread. The internal thread of the first connection part 202 is connected to the external thread of the second connection part 203.

[0083] It should be noted that an external thread may be formed at the first connection portion 202, and correspondingly, an internal thread may be formed at the second connection portion 203. The external thread of the first connection portion 202 is connected to the internal thread of the second connection portion 203.

[0084] In this embodiment, the distance between the top wall 211 and the threaded connection portion 103 is adjusted by adjusting the number of threads of the bolt tail receiving portion 204 and the threaded connection portion 103 being screwed together.

[0085] In addition, by replacing the bolt tail receiving portion 204 with different lengths, it is also possible to meet the requirements of different lengths of the end of the bolt 10 exposed from the nut 20.

[0086] Fig. 9 It is a cross-sectional view of a nut protective cap 2 of another embodiment of the second implementation manner of the utility model.

[0087] For example, in some embodiments, the bolt tail receiving portion 204 further includes a first inner concave structure 1042 and a first outer convex structure 1041 , and the first inner concave structure 1042 and the first outer convex structure 1041 are alternately stacked in the up-and-down direction to form a bellows shape.

[0088] Third embodiment

[0089] In this embodiment, the bolt tail accommodating portion 304 and the threaded connecting portion 103 have a separate structure. The difference between this embodiment and the second embodiment is that in this embodiment, the bolt tail accommodating portion 304 and the threaded connecting portion 103 are snap-connected via a tail end connecting portion.

[0090] Fig.10 It is a cross-sectional view of a nut protective cap 3 of an example of the third implementation manner of the utility model.

[0091] The tail end connection portion includes a first connection portion 302 formed at the lower end of the bolt tail receiving portion 304, and a second connection portion 303 formed at the upper end of the threaded connection portion 103. The first connection portion 302 and the second connection portion 303 are engaged and connected.

[0092] like Fig.10 As shown, in some embodiments, for example, the tail end connection portion includes an annular groove 306 formed on the inner contour surface of the bolt tail receiving portion 304 , and an annular protrusion 305 formed on the outer surface of the threaded connection portion 103 and engaged with the annular groove 306 .

[0093] In other embodiments, for example, the tail end connection portion includes an annular protrusion 305 formed on the inner contour surface of the bolt tail accommodating portion 304 , and an annular groove 306 formed on the outer surface of the threaded connection portion 103 and engaged with the annular protrusion 305 .

[0094] In this embodiment, there are multiple annular grooves 306 , and the multiple annular grooves 306 are spaced apart in the vertical direction. In this embodiment, the distance between the top wall 311 and the threaded connection part 103 is adjusted by selecting annular grooves 306 at different heights to engage with the annular protrusion 305 .

[0095] Fig.11 It is a cross-sectional view of a nut protective cap 3 of another embodiment of the third implementation manner of the present utility model.

[0096] like Fig.11 As shown, in some embodiments, for example, the bolt tail receiving portion 304 further includes a first inner concave structure 1042 and a first outer convex structure 1041, and the first inner concave structure 1042 and the first outer convex structure 1041 are alternately stacked in the up and down directions to form a bellows shape.

[0097] In this embodiment, the different lengths of the tail end 11 of the bolt 10 are accommodated by the expansion and contraction of the bellows-shaped structure in the bolt tail accommodating portion 304 .

[0098] Fourth embodiment

[0099] Fig.12 It is a cross-sectional view and a partially enlarged view of a nut protective cap of an embodiment of the fourth implementation mode of the utility model.

[0100] like Fig.12 As shown, the nut protective cap 4 has a split structure, which includes a nut receiving portion 101 and a threaded connection portion 103, and the nut receiving portion 101 and the threaded connection portion 103 are formed as one body. The bolt tail receiving portion 404 is connected to the threaded connection portion 103 through a tail end connection portion.

[0101] In some embodiments, the bolt tail receiving portion 404 has a first connection portion 402, and the threaded connection portion 103 has a second connection portion 403. The inner contour of the first connection portion 402 has a plurality of latch teeth 406 distributed in the up-down direction. The outer contour of the second connection portion 403 has a latch claw 405, and the latch claw 405 has a sawtooth-shaped outer structure. The structure of the latch tooth 406 is adapted to the structure of the latch claw 405.

[0102] When the bolt tail receiving portion 404 is connected to the threaded connection portion 103, the bolt tail receiving portion 404 is buckled from top to bottom on the second connection portion 403 at the top of the threaded connection portion 103. During the installation process, the claw 405 is engaged with the tooth 406, and the tooth 406 at different heights can be adjusted to engage with the claw 405 according to the length of the tail end 11 of the bolt 10.

[0103] The above-mentioned claw 405 has a barb structure, which allows the bolt tail accommodating portion 404 to move relative to each other from top to bottom, while limiting the bolt tail accommodating portion 404 from moving relative to each other from bottom to top, thereby preventing the bolt tail accommodating portion 404 from detaching from the threaded connection portion 103 after the nut protective cap is installed.

[0104] In addition, in some other embodiments, the tail end connection portion includes a plurality of latch teeth 406 formed on the outer contour surface of the second connection portion 403 of the threaded connection portion 103 and distributed in the up and down directions, and a claw 405 formed on the inner contour surface of the first connection portion 402 of the bolt tail accommodating portion 404 and selectively engaged with the latch teeth 406 to keep the bolt tail accommodating portion in an anti-slip state.

[0105] Fifth embodiment

[0106] Fig.13 It is a cross-sectional view of a nut protective cap of an embodiment of the fifth implementation mode of the present utility model.

[0107] like Fig.13 As shown, the nut protective cap 5 of this embodiment includes a nut accommodating portion 501 , a telescopic cylinder 502 and a threaded connection portion 503 .

[0108] The nut receiving portion 501 is provided with a nut receiving space 102 for receiving a nut 20 (not shown). To meet the use requirements of nuts 20 of different thicknesses, in the nut protective cap 5 of this embodiment, the inner contour of the upper part of the telescopic cylinder 502 has an internal thread; and the outer contour of the lower part of the nut receiving portion 501 has an external thread. The telescopic cylinder 502 and the nut receiving portion 501 are threadedly connected through the internal thread and the external thread.

[0109] When in use, the height of the nut accommodating space 102 is adjusted by adjusting the number of threads of the telescopic cylinder 502 and the nut accommodating portion 501 , thereby adapting to the use requirements of nuts 20 with different thicknesses.

[0110] In addition, an internal thread may be provided on the inner contour of the nut accommodating portion 501 , and an external thread may be provided on the outer surface of the telescopic cylinder 502 , so as to realize a threaded connection between the telescopic cylinder 502 and the nut accommodating portion.

[0111] In some embodiments, the lower end opening of the telescopic cylinder 502 is provided with a flange portion 508 , and the flange portion 508 is formed by the telescopic cylinder 501 extending radially outward and axially downward at the same time.

[0112] When in use, the lower edge of the flange portion 508 abuts against the mounting plane P. By rotating the telescopic cylinder 502 to increase the force between the flange portion 508 and the mounting plane P, the lower edge of the flange portion 508 is pressed against the mounting plane P. Even if the surface of the mounting plane P has certain convexities and concavities, the deformation of the lower edge of the flange portion 508 can achieve sealing, thereby preventing external rainwater from entering the interior of the nut protective cap 5 and causing rust on the nut 20, the bolt 10 and the nut 20.

[0113] In this embodiment, the bolt tail accommodating portion 204 includes a top wall 511, and the bolt tail accommodating portion 204 is provided with a tail end connecting portion, which includes an internal thread formed on the inner contour of the bolt tail accommodating portion 204, and an external thread formed on the outer contour of the upper end of the threaded connecting portion 503. The bolt tail accommodating portion 204 is connected to the threaded connecting portion 503 through the above-mentioned internal thread and external thread, and the distance between the top wall 511 and the threaded connecting portion 503 is adjusted by adjusting the number of threads of the bolt tail accommodating portion 204 and the threaded connecting portion 503, thereby adjusting the height of the bolt end accommodating space 105, thereby adapting to working conditions with different lengths of the tail end 11 of the bolt 10 extending from the upper end of the nut 20.

[0114] In addition, the tail end connection portion may include an external thread formed on the outer contour of the bolt tail receiving portion 204 and an internal thread formed on the inner contour of the upper end of the threaded connection portion, and the bolt tail receiving portion 204 is threadedly connected to the threaded connection portion 503 through the tail end connection portion.

[0115] To facilitate the operation of rotating the bolt tail accommodating portion 204, an anti-slip structure is provided on the outer surface of the bolt tail accommodating portion 204; the anti-slip structure can be, for example, convex points or concave points distributed on the outer contour surface of the bolt tail accommodating portion 204, or a plurality of strip grooves or strip protrusions surrounding the outer surface of the bolt tail accommodating portion 204, and the present application does not make any special limitation on this.

[0116] In addition, the above-mentioned anti-slip structure may also be provided on the outer surface of the telescopic cylinder 502, which will not be described in detail here.

[0117] Fig.14 It is a cross-sectional view of a nut protective cap of another embodiment of the fifth implementation mode of the present utility model.

[0118] like Fig.14 As shown, the nut protective cap of this embodiment is Fig.13The nut protective cap shown is simplified and comprises a nut accommodating portion 501 and a telescopic cylinder 502. The nut accommodating portion 501 has a nut accommodating space 102 therein, and the nut accommodating space 102 has an opening open downwards. The telescopic cylinder 502 has a cylindrical structure and is connected to the nut accommodating portion 501 by threads.

[0119] The nut accommodating space 102 of the nut accommodating portion 501 is integrated with the bolt end accommodating space 105 to accommodate the nut and the tail end of the bolt. In this embodiment, the height of the nut accommodating space 102 is adjusted by adjusting the number of threads of the telescopic cylinder 502 and the nut accommodating portion 501, thereby adapting to different working conditions of the length of the bolt extending upward from the installation plane P.

[0120] In this embodiment, the inner hole of the nut accommodating portion 501 may be slightly smaller than the maximum outer contour of the nut, and the nut protective cap 5 is installed on the nut in an interference fit manner.

[0121] The device of the present application is described in detail with reference to the preferred technical solution of the present application. However, it should be noted that, without departing from the spirit of the present application, those skilled in the art may make any transformation, modification and change based on the above disclosure. The present application includes the above specific embodiments and any equivalent forms thereof.

Claims

1. A nut protective cap, characterized in that: include: A threaded connection portion, the inner surface of which has internal threads; a nut accommodating portion, wherein the nut accommodating portion has a nut accommodating space; the upper side of the nut accommodating space is communicated with the inner cavity of the threaded connection portion, and the nut accommodating space has an orifice open downward; and The bolt tail accommodating portion is arranged on the upper side of the threaded connection portion, and the bolt tail accommodating portion has a bolt end accommodating space; wherein, The lower part of the bolt tail accommodating part is provided with a tail end connecting part connected to the threaded connecting part, so that the bolt tail accommodating part covers the tail end exposed from the upper end of the nut; the bolt tail accommodating part and the threaded connecting part are threadedly connected through the tail end connecting part.

2. The nut protective cap according to claim 1, characterized in that: The tail end connection portion includes an internal thread formed on the inner contour surface of the bolt tail accommodating portion, and an external thread formed on the outer surface of the threaded connection portion and connected to the internal thread.

3. The nut protective cap according to claim 1, characterized in that: The tail end connection portion includes an external thread formed on an outer contour surface of the bolt tail accommodating portion, and an internal thread formed on an inner contour surface of the threaded connection portion and connected to the external thread.

4. The nut protective cap according to claim 2, characterized in that: The outer surface of the bolt tail accommodating portion is provided with an anti-slip structure.

5. A nut protective cap, characterized in that: include: A nut receiving portion having a nut receiving space therein, wherein the nut receiving space has an opening open downward; The telescopic cylinder has a cylindrical structure, and the telescopic cylinder is connected to the nut accommodating portion through threads.

6. The nut protective cap according to claim 5, characterized in that: Also includes: A threaded connection part, the inner surface of which has internal threads; the upper side of the nut accommodating space is connected to the inner cavity of the threaded connection part; as well as The bolt tail accommodating portion is arranged on the upper side of the threaded connecting portion, and the bolt tail accommodating portion has a bolt end accommodating space therein.

7. The nut protective cap according to claim 5, characterized in that: The inner contour of the telescopic cylinder is provided with an internal thread, and the outer contour of the nut accommodating portion is provided with an external thread threadably connected to the internal thread.

8. The nut protective cap according to claim 5, characterized in that: The outer contour of the telescopic cylinder is provided with an external thread, and the inner contour of the nut accommodating portion is provided with an internal thread threadably connected to the external thread.

9. The nut protective cap according to any one of claims 5 to 8, characterized in that: The lower end of the telescopic cylinder is provided with a flange portion, and the flange portion extends radially outward and axially downward at the same time.

10. The nut protective cap according to claim 7, characterized in that: The outer contour of the telescopic cylinder is provided with an anti-slip structure.

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