CN217582835U

CN217582835U - Anti-loosening fastener

Info

Publication number: CN217582835U
Application number: CN202220688280.XU
Authority: CN
Inventors: 方建涛
Original assignee: Jiaxing Haina Fastener Co ltd
Current assignee: Jiaxing Haina Fastener Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-10-14
Anticipated expiration: 2032-03-28

Abstract

The utility model provides an anti-loosening fastener, belonging to the technical field of bolts, comprising a bolt sleeve and a locking bolt. The locking bolt includes an end pressure block and a screw rod. The screw rod is provided with a first thread ring and a second thread ring, and the bolt sleeve It includes a positioning ring and a positioning rod. The positioning rod is provided with a counterbore groove. The inner wall of the positioning rod located under the counterbore groove is provided with a first thread groove. The first thread groove is matched with the first thread ring on the screw rod. A first rubber pad is installed on the groove wall of the counterbore groove in the rod. By installing the bolt sleeve in the opening on the workpiece, the locking bolt is threaded in the bolt sleeve, and the end pressure block is pulled upward, and the end pressure block will thicken the upper end of the positioning rod and form a The nail head fixes the workpiece between the positioning ring and the groove section. After the groove section is formed to form the nail head, the inner first rubber pad fills the internal gap of the nail head to reduce the erosion of moisture and moisture and improve the stability effect.

Description

Anti-loosening fastener

Technical Field

The utility model belongs to the technical field of the bolt, concretely relates to locking fastener.

Background

In daily production and life, the use problem that two different objects need to be connected is often met, so that the bolt serving as the fastener of the connecting structure is widely used by people due to the characteristics of high connection speed, convenience and stable connection.

At present, one or more nuts are connected to bolts on the market through threads, and the nuts are screwed to realize connection and locking of workpieces. However, in the long-time use process, the existing bolt is easily affected with damp and rusted after being exposed in the air for a long time, so that the service life is shortened, the problem that the nut is loosened due to external factors such as vibration and the like easily occurs in the bolt structure, the connection failure is caused, the use is influenced, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking fastener aims at the problem that can effectual solution prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a locking fastener, locking bolt including bolt housing and screw-thread fit, locking bolt includes the end briquetting, the lower extreme integrated into one piece formula of end briquetting is provided with the screw rod, first fillet of thread and second fillet of thread have been seted up on the screw rod, the bolt housing includes the holding ring, holding ring lower surface integrated into one piece formula is provided with the locating lever, set up the counter bore groove in the locating lever, be located the first thread groove of having seted up on the locating lever inner wall of counter bore groove below, first fillet of thread looks adaptation on first thread groove and the screw rod, install the first rubber pad of round on the cell wall of counter bore groove in the locating lever.

Through installing the bolt housing in the opening on the work piece, with locking bolt threaded connection in the bolt housing, upwards pulling end briquetting, the axial force of end briquetting through the pulling screw rod is thick with locating lever upper end mound and is formed the pin fin, fixes the work piece between holding ring and groove section, after forming the groove section and forming the pin fin, inside first rubber pad fills the inside gap of pin fin, reduces the erosion of moisture and moisture, improves stable effect.

As a preferred, set up flutedly along circumference equidistance on the outer wall of locating lever, recess length and first rubber pad width looks adaptation.

As a preferred, the screw thread opposite direction of first fillet of thread and second fillet of thread, the lower extreme of locating lever is rotated and is connected with lock nut, the second thread groove has been seted up in lock nut, the screw thread opposite direction and the first thread groove opposite direction of second thread groove, second fillet of thread screw-thread fit on the screw rod is in lock nut.

As an optimization of the utility model, the cover has single dish packing ring on the screw rod, single dish packing ring is located between end briquetting and the holding ring.

As a preferred, the one side that single dish packing ring is close to the end briquetting is provided with big flank of tooth, the one side that single dish packing ring is close to the holding ring is provided with little flank of tooth, big caulking groove has been seted up on the end briquetting, big caulking groove is corresponding with big flank of tooth, and both form the jamming contact, little caulking groove has been seted up on the holding ring, little caulking groove is corresponding with little flank of tooth, and both form the jamming contact.

As a preferred aspect of the present invention, the first thread turn and the second thread turn have different pitches.

As a preferred, the inside of locating lever lower extreme is provided with dodges the groove, just dodge the groove and the coaxial setting of screw hole of locating lever, simultaneously, dodge the groove and be circular setting, just dodge the diameter in groove and be greater than or equal to the diameter of first fillet of screw.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an in installing the trompil on the work piece with the bolt cover, with locking bolt threaded connection in the bolt cover, upwards stimulate the end briquetting, the axial force of end briquetting through the pulling screw rod is thick with locating lever upper end mound and form the pin fin, fixes the work piece between holding ring and groove segment, after forming the groove segment and forming the pin fin, inside first rubber pad fills the inside gap of pin fin, reduces the erosion of moisture and moisture, improves stable effect.

2. The utility model discloses a rotation opposite direction of first thread circle and second thread circle for locating lever and lock nut can support tightly each other in the use, have avoided leading to not hard up problem because of taking place relative rotation in the use, have improved the security and the reliability of connecting.

3. The utility model discloses form wedge effect between the end briquetting of single dish packing ring and both sides and the holding ring, can effectually prevent that the end briquetting is rotatory, subsides and the rotatory pine that lax arouses takes off, great improvement locking bolt's fixed effect.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is an enlarged schematic view of a structure in fig. 2 according to the present invention.

In the figure: 1. a bolt sleeve; 101. a positioning ring; 1011. a small caulking groove; 102. positioning a rod; 1021. an avoidance groove; 103. a counter bore groove; 104. a first thread groove; 105. a first rubber pad; 106. a groove; 107. Locking the nut; 108. a second thread groove; 2. locking the bolt; 201. pressing the end head; 2011. a large caulking groove; 202. a screw; 2021. a first thread turn; 2022. a second thread turn; 3. a single disc washer; 301. A large tooth surface; 302. a small tooth surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Examples

Referring to fig. 1, the present invention provides the following technical solutions: the utility model provides a locking fastener, locking bolt 2 including bolt housing 1 and screw-thread fit, locking bolt 2 includes end briquetting 201, the lower extreme integrated into one piece formula of end briquetting 201 is provided with screw rod 202, first fillet of thread 2021 and second fillet of thread 2022 have been seted up on the screw rod 202, bolt housing 1 includes locating ring 101, locating ring 101 lower surface integrated into one piece formula is provided with locating lever 102, counter bore groove 103 has been seted up in the locating lever 102, be located and seted up first thread groove 104 on the locating lever 102 inner wall of counter bore groove 103 below, first thread groove 104 and the first fillet of thread 2021 looks adaptation on the screw rod 202, install round first rubber pad 105 on the cell wall of counter bore groove 103 in the locating lever 102.

Wherein, the outer wall of locating lever 102 is gone up along the equidistance in circumference and is seted up recess 106, and recess 106 length and first rubber pad 105 width looks adaptation.

In concrete application, install bolt housing 1 in the opening on the work piece, with locking bolt 2 threaded connection in bolt housing 1, upwards pulling end briquetting 201, end briquetting 201 is thick and form the pin fin with locating lever 102 upper end mound through the axial force of pulling screw 202, fix the work piece between holding ring 101 and recess 106 section, after forming recess 106 section formation pin fin, inside first rubber pad 105 fills the inside gap of pin fin, reduce the erosion of moisture and moisture, improve stable effect.

Specifically, referring to fig. 1-2, the first thread turn 2021 and the second thread turn 2022 have opposite thread directions, the lower end of the positioning rod 102 is rotatably connected with a lock nut 107, a second thread groove 108 is formed in the lock nut 107, the thread direction of the second thread groove 108 is opposite to that of the first thread groove 104, and the second thread turn 2022 on the screw rod 202 is in threaded engagement with the lock nut 107.

In specific application, the first thread ring 2021 and the second thread ring 2022 have opposite rotation directions, so that the positioning rod 102 and the lock nut 107 can be tightly abutted to each other in the use process, the problem of looseness caused by relative rotation in the use process is avoided, and the safety and reliability of connection are improved.

Specifically, referring to fig. 2-3, the screw 202 is sleeved with a single disc washer 3, and the single disc washer 3 is located between the end pressing block 201 and the positioning ring 101.

In a specific application, the single disc washer 3 increases the contact area between the end pressing block 201 and the positioning ring 101, and improves the loosening effect.

Specifically, referring to fig. 3, a large tooth face 301 is disposed on one side of the single disc washer 3 close to the end pressing block 201, a small tooth face 302 is disposed on one side of the single disc washer 3 close to the positioning ring 101, a large caulking groove 2011 is formed on the end pressing block 201, the large caulking groove 2011 corresponds to the large tooth face 301, the large tooth face and the small tooth face form clamping stagnation contact, a small caulking groove 1011 is formed on the positioning ring 101, the small caulking groove 1011 corresponds to the small tooth face 302, and the small tooth face form clamping stagnation contact.

Wherein the first thread turn 2021 and the second thread turn 2022 have different thread pitches.

In specific application, the thread pitch of the second thread ring 2022 is smaller than that of the first thread ring 2021, so that the axial strokes of the positioning rod 102 and the lock nut 107 which are matched with the second thread ring are different when the positioning rod and the lock nut are screwed, the problem that the positioning rod 102 and the lock nut 107 rotate together or independently is avoided, the positioning rod 102 and the lock nut 107 are prevented from loosening, and the anti-loosening performance is further improved.

The wedge effect is formed between the single disc washer 3 and the end pressing blocks 201 and the positioning rings 101 on the two sides, so that the end pressing blocks 201 can be effectively prevented from rotating, settling and loosening to cause rotation loosening, and the fixing effect of the locking bolt 2 is greatly improved.

Specifically, referring to the drawing, an avoiding groove 1021 is arranged inside the lower end of the positioning rod 102, the avoiding groove 1021 and the threaded hole of the positioning rod 102 are coaxially arranged, meanwhile, the avoiding groove 1021 is arranged in a circular shape, and the diameter of the avoiding groove 1021 is larger than or equal to that of the first threaded ring 2021.

In specific application, the diameter of the avoiding groove 1021 is larger than or equal to the diameter of the first thread turn 2021, so that the second thread turn 2022 can properly extend into the avoiding groove 1021, the stroke range of the locking nut 107 is larger, the locking nut can adapt to connection of workpieces of different models, and the structural adaptability is higher.

The utility model discloses a theory of operation and use flow:

when the locking bolt is used, the bolt sleeve 1 is installed in the opening on a workpiece, the locking bolt 2 is in threaded connection with the bolt sleeve 1, the end portion of the locking bolt 2 is in threaded connection with the locking nut 107, the problem of looseness caused by relative rotation in the using process is avoided, the connection safety and reliability are improved, the single disc gasket 3 is located between the end pressing block 201 and the positioning ring 101 and forms a wedge effect with the end pressing block 201 and the positioning ring 101, the end pressing block 201 can be effectively prevented from rotating, settling and loosening, the end pressing block 201 is pulled upwards, the upper end of the positioning rod 102 is upset by the axial force of the pulling screw rod 202 to form a nail head, the workpiece is fixed between the positioning ring 101 and the groove 106, after the nail head is formed by the groove 106, the inner first rubber pad 105 fills a gap inside the nail head, and the service life is prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-loosening fastener, comprising a bolt sleeve (1) and a locking bolt (2) with threaded fit, characterized in that: the locking bolt (2) comprises an end pressure block (201), the The lower end of the end pressing block (201) is integrally provided with a screw (202), the screw (202) is provided with a first thread ring (2021) and a second thread ring (2022), the bolt sleeve (1) ) comprises a positioning ring (101), the lower surface of the positioning ring (101) is integrally provided with a positioning rod (102), the positioning rod (102) is provided with a counterbore groove (103), located in the counterbore groove ( The inner wall of the positioning rod (102) below 103) is provided with a first thread groove (104), the first thread groove (104) is adapted to the first thread circle (2021) on the screw rod (202), and the A ring of first rubber pads (105) is installed on the groove wall of the counterbore groove (103) in the positioning rod (102).

2 . The anti-loosening fastener according to claim 1 , wherein grooves ( 106 ) are formed on the outer wall of the positioning rod ( 102 ) at equal distances in the circumferential direction, and the length of the groove ( 106 ) is equidistant. 3 . Compatible with the width of the first rubber pad (105).

The anti-loosening fastener according to claim 1, characterized in that: the thread directions of the first threaded ring (2021) and the second threaded ring (2022) are opposite, and the lower end of the positioning rod (102) A locking nut (107) is rotatably connected, the locking nut (107) is provided with a second thread groove (108), and the thread direction of the second thread groove (108) is the same as that of the first thread groove (104) Instead, the second threaded ring (2022) on the threaded rod (202) is threaded into the lock nut (107).

4. An anti-loosening fastener according to claim 1, characterized in that: the screw (202) is covered with a single-disc washer (3), and the single-disc washer (3) is located at the end pressure block (201). ) and the positioning ring (101).

The anti-loosening fastener according to claim 4, characterized in that: a large tooth surface (301) is provided on the side of the single-disc washer (3) close to the end pressure block (201), and the single-disc washer (3) is provided with a large tooth surface (301). A small tooth surface (302) is provided on the side of the washer (3) close to the positioning ring (101), and a large insert groove (2011) is formed on the end pressure block (201), and the large insert groove (2011) is connected with the large insert groove (2011). The tooth surfaces (301) correspond to each other, and the two form a stuck contact. The positioning ring (101) is provided with a small insert groove (1011), and the small insert groove (1011) corresponds to the small tooth surface (302). The two form a stuck contact.

6. The anti-loosening fastener according to claim 1, wherein the first thread circle (2021) and the second thread circle (2022) have different pitches.

7. The anti-loosening fastener according to claim 1, wherein an escape groove (1021) is provided inside the lower end of the positioning rod (102), and the escape groove (1021) is connected to the positioning rod (102). ) of the threaded holes are coaxially arranged, at the same time, the escape groove (1021) is arranged in a circular shape, and the diameter of the escape groove (1021) is greater than or equal to the diameter of the first threaded ring (2021).