Internal multi-tooth bolt

Abstract

The utility model relates to the technical field of bolts, and discloses an internal multi-tooth bolt which comprises an internal multi-tooth bolt body, a protection assembly is installed at the end of the internal multi-tooth bolt body, the outer side of the internal multi-tooth bolt body is sleeved with a self-locking assembly, the self-locking assembly comprises a self-locking gasket, a plurality of clamping blocks are annularly arranged on one side of the self-locking gasket, and the clamping blocks are arranged on the outer side of the self-locking gasket. Resistance increasing patterns are formed on the other side of the self-locking gasket, the inner multi-tooth bolt comprises a mounting part, an abutting piece and a threaded part, the abutting piece is fixedly connected to one side of the outer portion of the mounting part, and the threaded part is fixedly connected to the other side of the outer portion of the abutting piece. According to the internal multi-tooth bolt, the self-locking gasket with the helical tooth design is additionally arranged on the internal multi-tooth bolt, so that the locking effect is remarkably improved, and the loosening risk caused by vibration or external force is reduced. Meanwhile, the configured protective sleeve effectively prevents impurities from entering the inner tooth area, corrosion and abrasion are reduced, the protection performance is improved, bolts can be hidden, and the attractiveness and cleanliness of equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field especially relates to inner multi-tooth bolt. BACKGROUND

[0002] Bolts are widely used in mechanical, construction, automotive, aerospace and other industries, mainly for fixing, connecting and fastening various components. In mechanical equipment, bolts provide stable structural support to ensure the firm connection between parts and prevent loosening. In construction, bolts are used to fix steel structures, concrete components, etc., to enhance the safety and durability of buildings. In the automotive and aerospace fields, bolts bear the task of connecting critical parts, bearing high loads and resisting vibration, ensuring the reliability of equipment in high-vibration and harsh environments.

[0003] Inner multi-tooth bolts are a special type of bolt with multi-tooth design. The head or internal thread area contains multiple tooth-like structures to enhance the engagement force with the matching tool or locking device. This design enables inner multi-tooth bolts to provide stronger anti-loosening capability in high-load, vibration or frequent operation environments, avoiding bolt loosening or falling off. Inner multi-tooth bolts are commonly used in industries requiring high stability, durability and safety, such as automotive, mechanical equipment, aerospace and construction industries. By increasing the contact area and providing greater friction, inner multi-tooth bolts can maintain the firmness and reliability of the connection under harsh conditions.

[0004] Although existing inner multi-tooth bolts have advantages in improving anti-loosening capability and bearing high loads, there are still some deficiencies. First, the inner tooth area of the bolt is prone to intrusion of impurities, dust or moisture, which may cause bolt wear, jamming, and even affect the fastening effect. Second, in high-vibration or dynamic load environments, the risk of bolt loosening still exists, especially without additional locking mechanisms, frequent inspection and retightening are required, increasing maintenance costs and complexity.

[0005] To solve the above problems, an inner multi-tooth bolt is proposed. INVENTION CONTENTS

[0006] To overcome the above deficiencies, the utility model provides an inner multi-tooth bolt, aiming to solve the problem of existing inner multi-tooth bolts in high-load, vibration and harsh environments, and the problem of impurities entering the inner tooth area causing wear and jamming.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme: an inner multi-tooth bolt, comprising an inner multi-tooth bolt, a protective assembly is installed at the end of the inner multi-tooth bolt, and a self-locking assembly is sleeved on the outer side of the inner multi-tooth bolt;

[0008] The self-locking assembly comprises a self-locking washer, a plurality of clamping blocks are annularly arranged on one side of the self-locking washer, and resistance increasing grooves are formed on the other side of the self-locking washer.

[0009] As a further description of the above technical solution:

[0010] The inner multi-tooth bolt comprises a mounting portion, a resisting plate and a threaded portion, the resisting plate is fixedly connected to one side of the outer portion of the mounting portion, and the threaded portion is fixedly connected to the other side of the outer portion of the resisting plate.

[0011] As a further description of the above technical solution:

[0012] A plurality of inner teeth are annularly arranged on the inner portion of the mounting portion.

[0013] As a further description of the above technical solution:

[0014] A plurality of arc-shaped grooves are annularly formed on the side of the resisting plate close to the self-locking washer.

[0015] As a further description of the above technical solution:

[0016] The clamping blocks are inserted into the arc-shaped grooves and slide in the arc-shaped grooves.

[0017] As a further description of the above technical solution:

[0018] The protection assembly comprises a protection sleeve, a limiting plug is arranged on the middle portion of the protection sleeve, and a plurality of outer teeth are annularly arranged on the outer side of the limiting plug.

[0019] As a further description of the above technical solution:

[0020] The limiting plug is inserted into the inner portion of the mounting portion, and the outer teeth are engaged with the inner teeth.

[0021] As a further description of the above technical solution:

[0022] The protection sleeve is located on the outer side of the mounting portion, the resisting plate and the self-locking washer.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1、In the utility model, the self-locking washer with the design similar to the helical tooth is additionally arranged on the inner multi-tooth bolt, so that the locking effect of the bolt can be obviously improved, and the loosening risk caused by vibration or external force can be reduced.

[0025] 2、The utility model discloses a protection sleeve can effectively prevent the impurity from entering the inner tooth area of the inner multi-tooth bolt, reduce the influence of corrosion, abrasion and other factors on the bolt performance, prolong its service life. The protection sleeve can also improve the protection of the bolt, avoid the damage of the external environment to the bolt, and hide the bolt in the area to be fixed, improve the appearance and neatness of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of the inner multi-tooth bolt according to the utility model is shown in the figure.

[0027] Figure 2 A structure schematic view of the clamping block of the inner multi-tooth bolt according to the utility model is shown in the figure.

[0028] Figure 3 A structure schematic view of the resistance-increasing groove of the inner multi-tooth bolt according to the utility model is shown in the figure.

[0029] Figure 4 A structure schematic view of the outer tooth of the inner multi-tooth bolt according to the utility model is shown in the figure.

[0030] LEGEND:

[0031] 1, inner multi-tooth bolt; 11, mounting portion; 111, inner tooth; 12, abutting piece; 121, arc-shaped groove; 13, threaded portion; 2, protection assembly; 21, protection sleeve; 22, limiting plug; 23, outer tooth; 3, self-locking assembly; 31, self-locking gasket; 32, clamping block; 33, resistance-increasing groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the utility model.

[0033] REFERENCE Figure 1 - Figure 4The utility model provides an embodiment: inner multi -tooth bolt, including inner multi -tooth bolt 1, inner multi -tooth bolt 1 including installation part 11, and the piece 12 of resisting and the threaded portion 13.Resisting piece 12 fixedly connected in the outside one side of installation part 11, threaded portion 13 fixedly connected in the outside another side of resisting piece 12, can fast and reliably with inner multi -tooth bolt 1 fixed in target position, be applicable to various complex installation demand.The end of inner multi -tooth bolt 1 is equipped with protection subassembly 2, and this protection subassembly 2 is made of corrosion -resistant material, can prevent impurity, dust, moisture etc. and enter installation part 11, avoid to cause abrasion and jam to inner tooth 111 in installation part 11, prolong its life. Protection subassembly 2 and installation part 11 area accurate meshing, not only increased the protective nature, can also strengthen the pollution resistance of bolt, be applicable to the severe working environment. The outside of inner multi -tooth bolt 1 is equipped with self -locking assembly 3, and self -locking assembly 3 is combined with the piece 12 of inner multi -tooth bolt 1, realized self -locking function, further strengthened the fastening effect of inner multi -tooth bolt 1 in high vibration environment, reduced the frequency of maintenance and inspection.

[0034] With reference to Figure 1 - Figure 3 Self -locking assembly 3 includes self -locking washer 31, and a plurality of clamping blocks 32 are arranged in the annular side of self -locking washer 31, and the clamping blocks 32 can be effectively locked with the piece 12 of bolt. The other side of self -locking washer 31 is provided with resistance increasing lines 33, and the resistance increasing lines 33 effectively enhance the friction force between the bolt and the installation part to be installed by increasing the friction force, to prevent loosening under high vibration or external force. A plurality of arc grooves 121 are arranged in the annular side of the piece 12 close to self -locking washer 31, and the arc grooves 121 provide a suitable space to accommodate the clamping blocks 32, and in the process of tightening the bolt, the clamping blocks 32 can be inserted into the arc grooves 121 and slide in a small range inside the arc grooves 121, so that the self -locking washer 31 and the piece 12 are tightly attached together, and the self -locking effect is generated when the bolt is subjected to external force, to further improve the anti -loosening ability and stability of the bolt.

[0035] With reference to Figure 2 and Figure 4The protection assembly 2 comprises a protective sleeve 21, a limiting plug 22 is arranged at the middle part of the protective sleeve 21, a plurality of outer teeth 23 are arranged in the annular shape at the outer side of the limiting plug 22, when the protective sleeve 21 is installed, the limiting plug 22 is inserted into the inside of the installation part 11, and the outer teeth 23 can be engaged with the inner teeth 111 in the inside of the installation part 11, so that a firm connection is formed, and the protective sleeve 21 is prevented from loosening under the action of external force. After installation, the protective sleeve 21 is located at the outside of the installation part 11, the abutting piece 12 and the self-locking washer 31, and can effectively cover the key components of the inner multi-tooth bolt 1, provides all-round protection, and effectively prevents external impurities, dust or moisture from entering the installation part 11 of the inner multi-tooth bolt 1, ensures the cleanliness and prevents corrosion in the inside of the installation part 11. Not only the durability of the inner multi-tooth bolt 1 is enhanced, but also the anti-pollution ability in harsh environment is improved.

[0036] Working principle: the inner multi-tooth bolt 1 is reliably fixed and fastened through the installation part 11, the abutting piece 12 and the threaded part 13. When the inner multi-tooth bolt 1 is installed, the threaded part 13 can be quickly connected with the target component, and the inner multi-tooth bolt 1 is ensured to be fixed stably at the target position. At the end of the inner multi-tooth bolt 1, the protection assembly 2 provides protection, the protective sleeve 21 is engaged with the inner teeth 111 in the inside of the installation part 11 through the limiting plug 22 and the outer teeth 23, and the protective sleeve 21 is ensured to be fixed firmly and is prevented from loosening under the action of external force. The protective sleeve 21 covers the key components of the inner multi-tooth bolt, prevents external impurities, dust or moisture from entering the installation part 11 area, and prevents corrosion and wear. In the process of tightening the inner multi-tooth bolt 1, the self-locking washer 31 and the abutting piece 12 slowly approach and combine, the clamping block 32 on the self-locking washer 31 is clamped with the arc-shaped groove 121, the self-locking effect is ensured when the bolt is tightened, and the anti-loosening ability of the inner multi-tooth bolt 1 is enhanced. The increased resistance lines 33 on the surface of the self-locking washer 31 further improve the friction force with the installation part, and effectively prevent loosening under the action of high vibration or external force.

[0037] Finally, it should be noted that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. Internal multi-toothed bolt comprising an internal multi-toothed bolt (1), characterized in that: The end of the inner multi-toothed bolt (1) is provided with a protection assembly (2), and the outer side of the inner multi-toothed bolt (1) is provided with a self-locking assembly (3); The self-locking assembly (3) comprises a self-locking washer (31), a plurality of clamping blocks (32) are annularly arranged on one side of the self-locking washer (31), and a resistance increasing groove (33) is formed on the other side of the self-locking washer (31).

2. The internally toothed bolt of claim 1, wherein: The inner multi-toothed bolt (1) comprises a mounting portion (11), an abutting piece (12) and a threaded portion (13), the abutting piece (12) is fixedly connected to one side of the outer side of the mounting portion (11), and the threaded portion (13) is fixedly connected to the other side of the outer side of the abutting piece (12).

3. The internally toothed bolt of claim 2, wherein: A plurality of inner teeth (111) are annularly arranged on the inner side of the mounting portion (11).

4. The internally toothed bolt of claim 2, wherein: A plurality of arc-shaped grooves (121) are annularly formed on the side of the abutting piece (12) close to the self-locking washer (31).

5. The internally toothed bolt of claim 4, wherein: The clamping blocks (32) are inserted into the arc-shaped grooves (121) and slide in the arc-shaped grooves (121).

6. The internally toothed bolt of claim 3, wherein: The protection assembly (2) comprises a protection sleeve (21), a limiting plug (22) is arranged in the middle of the protection sleeve (21), and a plurality of outer teeth (23) are annularly arranged on the outer side of the limiting plug (22).

7. The internally toothed bolt of claim 6, wherein: The limiting plug (22) is inserted into the inner side of the mounting portion (11), and the outer teeth (23) are engaged with the inner teeth (111).

8. The internally toothed bolt of claim 6, wherein: The protection sleeve (21) is located on the outer side of the mounting portion (11), the abutting piece (12) and the self-locking washer (31).

Images