Mechanical fastener

Abstract

The utility model discloses a mechanical fastener in the related technical field of fasteners, which comprises a bolt rod main body and an assembly main body, the assembly main body is provided with a bolt mounting hole, the bolt rod main body is mounted in the bolt mounting hole, the side edge of the bolt mounting hole is provided with a fastening hole in the direction perpendicular to the bolt mounting hole, and the bolt rod main body is mounted in the fastening hole. A lower positioning groove is formed in the bottom of the fastening hole, a positioning block is installed in the lower positioning groove, a lower fastening sleeve is arranged in the fastening hole, and an upper fastening sleeve is arranged above the lower fastening sleeve. The mechanical fastener is mainly used for locking and fixing the bolt rod main body and comprises the upper fastening sleeve, the lower fastening sleeve and the tightness adjusting nut, the fastening matching grooves matched with the bolt rod main body are correspondingly formed in the upper fastening sleeve and the lower fastening sleeve, the bolt rod main body is fixed, the matching area of the mechanical fastener and the bolt rod main body is large, and the fastening effect is good. Therefore, the fastening stability of the bolt rod main body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, specifically, it relates to a mechanical fastener. Background Technology

[0002] Fasteners, also known as standard parts in the market, are a general term for mechanical parts used to fasten two or more parts (or components) together into a single unit. They are characterized by a wide variety of specifications, diverse performance and applications, and a high degree of standardization, serialization, and generalization. Fasteners are the most widely used basic mechanical components, with a large demand. For products with pin-type structures, set screws are typically used for fixing. These set screws are located at the center of the outer side of the pin-type structure, relying on friction for fixation. However, due to the small contact area between the set screw and the pin, the fixing stability is poor. Furthermore, some pin-type structures require assembly with other components on their outer side, making it impossible to install set screws at the corresponding center of the outer side of the pin-type structure, thus limiting the application range of the pin-type structure.

[0003] In view of this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a mechanical fastener. The basic concept of the technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows:

[0005] A mechanical fastener includes a pin rod body and an assembly body. The assembly body has a pin mounting hole, in which the pin rod body is installed. A fastening hole is provided on the side of the pin mounting hole in a direction perpendicular to it. A lower positioning groove is provided at the bottom of the fastening hole, in which a positioning block is installed. A lower fastening sleeve is provided in the fastening hole, and an upper fastening sleeve is provided above the lower fastening sleeve. Fastening grooves are correspondingly provided on the side of the upper and lower fastening sleeves near the pin rod body. A connecting rod is fixedly provided on the lower fastening sleeve, and a tension adjustment nut is provided at the upper end of the connecting rod for adjusting the tension of the pin rod body.

[0006] As a further embodiment of this utility model: the size of the fastening groove is adapted to the size of the main body of the pin rod, and the fastening groove is provided with anti-slip texture to increase the friction between the fastening groove and the main body of the pin rod.

[0007] As a further improvement of this utility model: both the lower positioning groove and the upper positioning groove are square groove structures, and the size of the positioning block is adapted to the size of the upper positioning groove and the lower positioning groove, which is used to limit the lower fastening sleeve and prevent it from rotating.

[0008] As a further embodiment of this utility model: the upper fastening sleeve is provided with a through hole adapted to the connecting rod, and a clamping sleeve is provided between the upper fastening sleeve and the tension adjusting nut. The upper end surface of the clamping sleeve is provided with self-locking ridges, similar to the structure of a self-locking washer, with radial ridges on the outer side and oblique teeth on the inner side.

[0009] As a further improvement of this utility model: the upper end of the connecting rod is machined with an external thread, the tension adjustment nut is threadedly connected to the connecting rod, and the outer side of the tension adjustment nut has a concave-convex structure to facilitate tension adjustment.

[0010] As a further improvement of this utility model: an external mating hole is provided on the outer side of the assembly body, a mounting post is provided at the end of the pin rod body, and a mounting fixing hole is provided on the transition end face of the pin rod body and the mounting post for fixing and installing with other accessories.

[0011] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0012] The mechanical fastener of this utility model is mainly used for locking and fixing the main body of the pin rod. The fastener includes an upper fastening sleeve, a lower fastening sleeve, and a tension adjustment nut. Both the upper and lower fastening sleeves are provided with fastening grooves that are adapted to the main body of the pin rod to fix the main body of the pin rod. The large mating area with the main body of the pin rod increases the stability of the fastening of the main body of the pin rod.

[0013] The mechanical fastener of this utility model is set on the outer non-center position corresponding to the pin rod structure. The misaligned structure will not affect the cooperation between the outer side of the assembly body and other components. The outer side of the locking and adjusting nut has an anti-slip structure design, and no tools are needed during the adjustment process, making the operation simple.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the present invention in use.

[0017] Figure 2This is a front view of the utility model in use.

[0018] Figure 3 This is a schematic diagram of the fastener structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the utility model in use.

[0020] Figure 5 This is a schematic diagram of the end of the main body of the pin rod of this utility model.

[0021] In the diagram: 1. Pin rod body; 2. Tightening adjustment nut; 3. Assembly body; 4. External mating hole; 5. Connecting rod; 6. Upper fastening sleeve; 7. Lower fastening sleeve; 8. Fastening mating groove; 9. Pin mounting hole; 10. Pressing mating sleeve; 11. Mounting post; 12. Mounting fixing hole; 13. Lower positioning groove; 14. Positioning block; 15. Upper positioning groove.

[0022] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] like Figures 1 to 5 As shown, a mechanical fastener includes a pin rod body 1 and an assembly body 3. The assembly body 3 has a pin mounting hole 9, in which the pin rod body 1 is installed. A fastening hole is provided on the side of the pin mounting hole 9 in a direction perpendicular to it. A lower positioning groove 13 is provided at the bottom of the fastening hole, and a positioning block 14 is installed in the lower positioning groove 13. A lower fastening sleeve 7 is provided in the fastening hole, and an upper fastening sleeve 6 is provided above the lower fastening sleeve 7. Fastening mating grooves 8 are provided on the side of the upper fastening sleeve 6 and the lower fastening sleeve 7 near the pin rod body 1. A connecting rod 5 is fixedly provided on the lower fastening sleeve 7, and a tension adjustment nut 2 is provided at the upper end of the connecting rod 5 for adjusting the tension of the pin rod body 1.

[0025] The size of the fastening groove 8 is compatible with the size of the pin rod body 1, and the fastening groove 8 is provided with anti-slip texture to increase the friction between it and the pin rod body 1.

[0026] Both the lower positioning groove 13 and the upper positioning groove 15 are square groove structures. The size of the positioning block 14 is adapted to the size of the upper positioning groove 15 and the lower positioning groove 13 to limit the lower fastening sleeve 7 and prevent it from rotating.

[0027] The upper fastening sleeve 6 has a through hole that matches the connecting rod 5. A clamping sleeve 10 is provided between the upper fastening sleeve 6 and the tension adjusting nut 2. The upper end surface of the clamping sleeve 10 is provided with self-locking ridges similar to the structure of a self-locking washer, with radial ridges on the outer side and oblique teeth on the inner side.

[0028] The upper end of the connecting rod 5 is machined with external threads. The tension adjusting nut 2 is threadedly connected to the connecting rod 5. The outer side of the tension adjusting nut 2 has a concave-convex structure to facilitate tension adjustment.

[0029] An external mating hole 4 is provided on the outer side of the assembly body 3, and a mounting post 11 is provided at the end of the pin rod body 1. A mounting fixing hole 12 is provided on the transition end face between the pin rod body 1 and the mounting post 11 for fixing and installing with other accessories.

[0030] The working principle of this utility model is as follows: When using this fastener to fix the main body 1 of the pin rod, the tension adjustment nut 2 is rotated upward. There is a certain gap between the tension adjustment nut 2 and the clamping sleeve 10. When the main body 1 of the pin rod is pulled out, the upper fastening sleeve 6 can slide upward along the connecting rod 5, thereby realizing the position adjustment between the main body 1 of the pin rod and the assembly body 3. When tightening is required, the tension adjustment nut 2 is rotated. The lower end face of the tension adjustment nut 2 contacts the clamping sleeve 10, thereby pressing the upper fastening sleeve 6 downward. The upper fastening sleeve 6 and the lower fastening sleeve 7 cooperate to press and fix the main body 1 of the pin rod. A self-locking structure is formed between the tension adjustment nut 2 and the assembly body 3 to ensure the fastening performance of the fastener.

[0031] This utility model has a reasonable structural design and is easy to install and use. The mechanical fastener is mainly used for locking and fixing the main body 1 of the pin rod. The fastener includes an upper fastening sleeve 6, a lower fastening sleeve 7, and a tension adjusting nut 2. Both the upper fastening sleeve 6 and the lower fastening sleeve 7 are provided with corresponding fastening grooves 8 that are adapted to the main body 1 of the pin rod to fix the main body 1 of the pin rod. The mechanical fastener with a large mating area with the main body 1 of the pin rod increases the stability of the fastening of the main body 1 of the pin rod. It is set on the outer non-center position of the corresponding structure of the pin rod. The misaligned structure will not affect the mating between the outer side of the assembly body 3 and other components. The outer side of the locking adjusting nut has an anti-slip structure design, and no tools are needed during the adjustment process, making the operation simple.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A mechanical fastener, comprising a pin body (1) and an assembly body (3), characterized in that, The assembly body (3) is provided with a pin mounting hole (9), and the pin rod body (1) is installed in the pin mounting hole (9). A fastening hole is provided on the side of the pin mounting hole (9) in a direction perpendicular to it. A lower positioning groove (13) is provided at the bottom of the fastening hole. A positioning block (14) is installed in the lower positioning groove (13). A lower fastening sleeve (7) is provided in the fastening hole. An upper fastening sleeve (6) is provided above the lower fastening sleeve (7). Fastening mating grooves (8) are provided on the side of the upper fastening sleeve (6) and the lower fastening sleeve (7) close to the pin rod body (1). A connecting rod (5) is fixedly provided on the lower fastening sleeve (7). A tension adjustment nut (2) is provided at the upper end of the connecting rod (5).

2. A mechanical fastener according to claim 1, characterized in that, The size of the fastening groove (8) is compatible with the size of the main body (1) of the pin rod, and the fastening groove (8) is provided with anti-slip texture.

3. A mechanical fastener according to claim 2, characterized in that, The lower positioning groove (13) and the upper positioning groove (15) are both square groove structures, and the size of the positioning block (14) is compatible with the size of the upper positioning groove (15) and the lower positioning groove (13).

4. A mechanical fastener according to claim 3, characterized in that, The upper fastening sleeve (6) has a through hole that matches the connecting rod (5). A clamping sleeve (10) is provided between the upper fastening sleeve (6) and the tension adjusting nut (2). The upper end surface of the clamping sleeve (10) is provided with self-locking ridges.

5. A mechanical fastener according to claim 4, characterized in that, The upper end of the connecting rod (5) is machined with external threads, and the tension adjusting nut (2) is threadedly connected to the connecting rod (5). The outer side of the tension adjusting nut (2) has a concave-convex structure.

6. A mechanical fastener according to claim 5, characterized in that, An external mating hole (4) is provided on the outer side of the assembly body (3), a mounting post (11) is provided at the end of the pin rod body (1), and a mounting fixing hole (12) is provided on the transition end face between the pin rod body (1) and the mounting post (11).

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