Bolt with detachable adjusting piece
By setting a detachable variable diameter strip on the screw, the loosening problem caused by mismatch in bolt connections is solved, and a more secure and reliable connection effect is achieved.
Patent Information
- Application Number
- CN202421823413.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-30
AI Technical Summary
When connecting existing bolts to plastic parts, if the connecting hole is too large or expanded during long-term use, the connection of the bolts is prone to loosening, affecting the firmness of the connection.
A bolt with a detachable adjusting member is designed, and a detachable variable diameter strip is provided on the screw. The variable diameter strip is protruding from the surface of the screw, and the surface is provided with convex teeth. The effective diameter of the screw is adjusted through the variable diameter strip to enhance the connection with the plastic part hole.
Through the removable variable diameter strip, an interference connection can be formed when the connection hole is slightly larger, which improves the firmness and anti-loosening performance of the connection, and ensures the reliability and stability of the connection.
Smart Images
Figure CN222894480U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fasteners, in particular to a bolt with a detachable adjusting piece. Background Art
[0002] A bolt is a common mechanical part, usually consisting of two parts: a head and a screw.
[0003] The head of the bolt has many shapes, such as hexagonal head, square head, round head, etc. Different head shapes are suitable for different tools and operating environments. The screw usually has threads to cooperate with the nut to achieve the function of fastening.
[0004] A connection method of bolts. A connection hole is provided on the plastic part, and the bolt is connected to the connection hole. The connection hole can be a threaded hole or a non-threaded hole. The metal bolt enters the non-threaded hole, and the bolt forces the hole wall of the connection hole to deform, thus forming a tight connection.
[0005] However, when the connection hole is too large, or when the connection hole is enlarged during long-term use, the bolt connection will become loose, affecting the firmness of the connection. Utility Model Content
[0006] In view of the problems pointed out in the background technology, the utility model proposes a bolt with a detachable adjusting member to solve the above technical problems.
[0007] The technical solution of the utility model is achieved in this way:
[0008] A bolt with a detachable adjusting part comprises a head and a screw rod, wherein the surface of the screw rod is provided with threads, the surface of the screw rod is provided with a connecting groove, a detachable reducing strip is connected in the connecting groove, the reducing strip protrudes from the surface of the screw rod, and the surface of the reducing strip is provided with convex teeth.
[0009] The utility model is further configured that the connecting groove is arranged along the length direction of the screw rod, the reducing strip is in the shape of a long strip, and the convex teeth are arranged along the length direction of the reducing strip.
[0010] The utility model is further configured as follows: the connecting groove passes through the front end of the screw rod, an inwardly concave positioning groove is provided on the rear side wall of the connecting groove, a positioning protrusion corresponding to the positioning groove is provided on the reducing strip, a connecting hole is provided on the side wall of the front end of the connecting groove, the connecting hole is radially arranged with the screw rod, a positioning hole corresponding to the connecting hole is provided on the reducing strip, and positioning pins are connected in the positioning hole and the connecting hole.
[0011] The utility model is further configured such that, in the radial direction of the screw, the thickness of the front end of the reducing strip is smaller than the thickness of the rear end thereof.
[0012] The utility model is further configured such that the front end of the variable diameter strip is located at the inner side of the connecting groove.
[0013] By adopting the above technical solution, the beneficial effects of the utility model are as follows:
[0014] The bolt with a detachable adjusting part provided by the utility model has a detachable reducing strip on the screw rod of the bolt. When the diameter of the hole on the plastic part is slightly larger, the reducing strip can be installed on the screw rod, and the screw rod and the hole on the plastic part are formed with an interference connection through the reducing strip, so that a firm connection is formed. The reducing strip can be used or not according to needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] Figure 2 It is an exploded schematic diagram of the utility model.
[0018] Figure 3 It is a side view of the utility model.
[0019] Figure 4 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] For reference Figure 1-4 The utility model is described as follows:
[0022] Embodiment 1: A bolt with a detachable adjusting member comprises a head 1 and a screw rod 2, wherein the surface of the screw rod 2 is provided with a thread. A connecting groove 3 is provided on the surface of the screw rod 2, and the connecting groove 3 is arranged along the length direction of the screw rod 2. The connecting groove 3 is arranged through the front end of the screw rod 2, and provides a position and guide for the installation of the reducing strip 4. A detachable reducing strip 4 is connected in the connecting groove 3, and the reducing strip 4 is in the shape of a long strip. The reducing strip 4 is adapted to be connected with the connecting groove 3, and its shape and size are adapted to the reducing strip 4 to ensure that the reducing strip 4 can be stably installed therein, and the shape of the long strip matches the connecting groove 3, and can be inserted and fixed in the connecting groove 3, and the reducing strip 4 is arranged protruding from the surface of the screw rod 2, and the surface of the reducing strip 4 is provided with convex teeth 5, and the convex teeth 5 are arranged along the length direction of the reducing strip 4, and the convex teeth 5 arranged along the length direction of the reducing strip 4 can increase the friction with the installation surface when the bolt is tightened to prevent the bolt from loosening.
[0023] The detachable reducing strip 4 can adjust the effective diameter of the bolt according to actual needs, thereby increasing the versatility of the bolt in different application scenarios. The presence of the convex teeth 5 improves the anti-loosening performance of the bolt and ensures the reliability of the connection.
[0024] An inwardly concave positioning groove 6 is provided on the rear side wall of the connecting groove 3, a positioning protrusion 7 corresponding to the positioning groove 6 is provided on the reducing strip 4, a connecting hole 8 is provided on the side wall at the front end of the connecting groove 3, the connecting hole 8 is radially arranged with the screw 2, a positioning hole 9 corresponding to the connecting hole 8 is provided on the reducing strip 4, and a positioning pin 10 is connected between the positioning hole 9 and the connecting hole 8.
[0025] The cooperation between the positioning groove 6 and the positioning protrusion 7, and the cooperation between the connecting hole 8, the positioning hole 9 and the positioning pin 10 can ensure that the position of the reducer strip 4 in the connecting groove 3 is accurate and avoids its displacement in the length direction, which helps to prevent the reducer strip 4 from loosening or displacement due to vibration or other external forces during operation, thereby improving the installation stability of the reducer strip 4. When the reducer strip 4 is installed in place, the connecting hole 8 is aligned with the positioning hole 9 on the reducer strip 4, and then the positioning pin 10 is inserted to fix the reducer strip 4. The positioning pin 10 effectively prevents the reducer strip 4 from escaping from the connecting groove 3, thereby further enhancing the reliability of the connection between the reducer strip 4 and the screw 2.
[0026] When the hole on the plastic part connected with the bolt is slightly larger than the diameter of the screw, it usually leads to the connection not being tight and stable enough, and it is easy to loosen and slip. In this case, the detachable reducer 4 can play an important role. The reducer 4 protrudes from the surface of the screw 2, increasing the effective diameter of the bolt as a whole. This allows the bolt to better fill the space in the hole when inserted into the hole of the plastic part, reducing the gap. Since the surface of the reducer 4 is provided with convex teeth 5, when the bolt is tightened, the convex teeth 5 will be embedded in the plastic part, increasing the friction and bite force. This effectively prevents the bolt from rotating and loosening in the plastic part, thereby enhancing the ability to tighten the connection. Plastic parts may deform or shrink under the influence of factors such as force and temperature changes. The presence of the reducer 4 can provide additional support and restriction, reducing the influence of plastic part deformation on the stability of the connection. When faced with the situation where the diameter of the hole on the plastic part is slightly larger, the reducer 4 can significantly improve the tightening connection effect of the bolt and improve the reliability and stability of the connection.
[0027] In the radial direction of the screw rod 2, the thickness of the front end of the reducing strip 4 is smaller than the thickness of the rear end thereof. The front end of the reducing strip 4 is located inside the connecting groove 3, so that the front end of the bolt can enter the hole conveniently.
[0028] In the radial direction of the screw rod 2, the reducing strip 4 is designed with a thin front end and a thick rear end. When the front end of the bolt needs to enter the hole, the thinner front end can reduce the contact resistance with the hole mouth and play a guiding role, making it easier to insert the bolt into the hole.
[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A bolt with a detachable adjusting member, comprising a head (1) and a screw rod (2), wherein the surface of the screw rod (2) is provided with threads, characterized in that: The surface of the screw rod (2) is provided with a connecting groove (3), a detachable reducing strip (4) is connected in the connecting groove (3), the reducing strip (4) is arranged protruding from the surface of the screw rod (2), and the surface of the reducing strip (4) is provided with convex teeth (5).
2. A bolt with a detachable adjusting member according to claim 1, characterized in that: The connecting groove (3) is arranged along the length direction of the screw rod (2), the reducing strip (4) is in the shape of a long strip, and the convex teeth (5) are arranged along the length direction of the reducing strip (4).
3. A bolt with a detachable adjusting member according to claim 2, characterized in that: The connecting groove (3) is arranged through the front end of the screw rod (2); an inwardly concave positioning groove (6) is arranged on the rear side wall of the connecting groove (3); a positioning protrusion (7) corresponding to the positioning groove (6) is arranged on the reducing strip (4); a connecting hole (8) is arranged on the side wall at the front end of the connecting groove (3); the connecting hole (8) is arranged radially with the screw rod (2); a positioning hole (9) corresponding to the connecting hole (8) is arranged on the reducing strip (4); and a positioning pin (10) is connected between the positioning hole (9) and the connecting hole (8).
4. A bolt with a detachable adjusting member according to claim 2, characterized in that: In the radial direction of the screw (2), the thickness of the front end of the reducing strip (4) is smaller than the thickness of the rear end thereof.
5. A bolt with a detachable adjusting member according to claim 4, characterized in that: The front end of the reducing strip (4) is located inside the connecting groove (3).