Limiting jig for screw assembling

Abstract

The utility model discloses a limiting jig for assembling a screw rod, which comprises a jig body, one end of the jig body is provided with a first insertion hole, and the first insertion hole is used for being matched and connected with an output shaft of an electric screwdriver; the other end of the jig body is provided with a second inserting hole used for containing the screw rod, and a protruding section used for being connected with the screw rod in a matched mode is arranged in the second inserting hole. According to the design, accurate installation of the screw can be achieved by controlling the depth of the second inserting hole, it can be ensured that the exposed length of the screw meets the production requirement, when the limiting jig is used for installing the screw, size measurement is not needed any more, assembly operation of the screw can be achieved only by one person, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more particularly to a limiting fixture for screw assembly. Background Art

[0002] Connectors are fundamental components of modern industry and the information society. Serving as nodes between electronic system devices, connectors transmit electrical current or optical signals between devices, equipment, components, and subsystems, ensuring signal integrity and energy transmission efficiency between systems. Connectors in different application areas must meet varying performance requirements, and their functional characteristics and technical levels vary depending on the application scenario. Depending on the transmission medium, connectors can be categorized as electrical connectors, microwave and radio frequency connectors, and optical connectors, and are widely used in communications, automotive, consumer electronics, industrial transportation, aerospace, and military fields.

[0003] Connectors consist of contacts, insulators, housings, and accessories. Contacts are the core components of connectors, achieving electrical connection through the interlocking of male and female contacts. The male contact is a rigid part, typically made of brass or phosphor bronze, while the female contact is a socket that deforms elastically when the pin is engaged, forming a close contact with the male contact. The insulator insulates the contacts from each other and from the housing. The housing serves as the outer shell of the connector, providing protection and alignment during interlocking. Accessories are divided into structural accessories (such as retaining rings, locating keys, locating pins, guide pins, sealing rings, gaskets, etc.) and installation accessories (such as screws, nuts, screws, spring coils, etc.).

[0004] Currently, the screw installation method of connectors is mostly manual assembly, which involves manually screwing in the connector using a hexagonal wrench. However, when using this assembly method, the screw-in depth of the connector cannot be controlled, resulting in high labor hours and a high defect rate. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a limiting fixture for screw assembly to solve the problem that the screw insertion depth cannot be controlled during screw assembly.

[0006] The technical solution of the present utility model is as follows: A limiting jig for screw assembly, comprising a jig body, one end of the jig body being provided with a first plug hole, the first plug hole being used to cooperate and connect with the output shaft of an electric screwdriver; the other end of the jig body being provided with a second plug hole for accommodating a screw, the second plug hole being provided with a protruding section for cooperating and connecting with the screw.

[0007] Furthermore, the fixture body includes a main body and a plug-in portion detachably connected to the main body, the plug-in portion is arranged in the main body, the first plug-in hole is formed by one end of the main body being recessed inward along the axial direction of the main body, the second plug-in hole is formed by the other end of the main body being recessed inward along the axial direction of the main body, a third plug-in hole connected to the first plug-in hole and the second plug-in hole is provided in the main body, and the lower end of the plug-in portion extends into the second plug-in hole to form the protruding section for mating with the screw.

[0008] Furthermore, the inner cavity of the first plug hole is a hexagonal cavity.

[0009] Furthermore, the second plug-in hole is a cylindrical hole.

[0010] Furthermore, the depth of the second plug hole is 13.1 mm to 13.9 mm.

[0011] Furthermore, the protruding section is a regular hexagonal column, and when the protruding section is inserted into the inner hexagonal hole of the screw, the outer wall of the protruding section contacts the wall of the inner hexagonal hole of the screw.

[0012] Furthermore, the main body is provided with a mounting hole penetrating through the wall thickness of the main body, and the mounting hole is communicated with the first plugging hole.

[0013] Furthermore, the inner wall of the mounting hole is provided with a thread for matching with a wrench.

[0014] Furthermore, the inner cavity of the third plugging hole is a hexagonal cavity, and the aperture of the first plugging hole is larger than the aperture of the third plugging hole.

[0015] Furthermore, the plug-in portion includes a first section and a second section, the first section and the second section are both regular hexagonal prisms, the cross-sectional area of ​​the first section is larger than the cross-sectional area of ​​the second section, the first section is located in the first plug-in hole, and the first section is in contact with the inner wall of the first plug-in hole, a portion of the second section is located in the third plug-in hole, and the second section is in contact with the inner wall of the third plug-in hole.

[0016] The present invention according to the above solution has the following beneficial effects: The present invention provides a screw rod assembly stop jig, comprising a jig body, one end of which is provided with a first insertion hole, the first insertion hole being used to mate with the output shaft of an electric screwdriver; and the other end of the jig body being provided with a second insertion hole for accommodating the screw rod, the second insertion hole being provided with a protruding section for mating with the screw rod. This design allows precise screw rod installation by controlling the depth of the second insertion hole, ensuring that the exposed length of the screw rod meets production requirements. Furthermore, when installing a screw rod using the stop jig provided by the present invention, no dimensional measurement is required, and only one person is required to complete the screw rod assembly operation, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A cross-sectional view of a position limiting fixture in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structural decomposition of the limiting fixture in an embodiment of the present utility model;

[0020] Figure 3 for Figure 2 Full cross-sectional view of

[0021] Figure 4 This is a schematic diagram of the use of the limit fixture and connector;

[0022] Figure 5 This is a schematic diagram after the screw is installed in place.

[0023] In the figure, 1. fixture body; 11. first plug-in hole; 12. second plug-in hole; 13. main body; 131. mounting hole; 14. plug-in part; 141. first section; 142. second section; 1421. protruding section; 15. third plug-in hole; 2. screw; h. depth of the second plug-in hole. DETAILED DESCRIPTION

[0024] The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments.

[0025] In order to better understand the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments:

[0026] The screws of existing connectors are generally assembled manually using a hexagonal wrench. During assembly, the screw insertion depth is often difficult to control. In actual production, two people are often required to work together: one person holds the hexagonal wrench to screw in, and the other person uses a caliper to measure the exposed length of the screw to prevent the screw from being screwed in too deep or too little. However, after manually screwing in the screw, it is found that the exposed length of the screw often fluctuates around 12mm during measurement, and the exposed length of most screws is difficult to reach the standard range (13.5±0.4mm).

[0027] Based on this, this embodiment provides a screw assembly limiting fixture, see Figure 1 As shown, Figure 1 This is a cross-sectional view of the limiting jig in this embodiment. The limiting jig for screw assembly provided in this embodiment includes a jig body 1. A first plug hole 11 is provided at one end of the jig body 1. The first plug hole 11 is used to cooperate with the output shaft of the electric screwdriver; a second plug hole 12 is provided at the other end of the jig body 1 to accommodate the screw 2, and a protruding section 1421 for cooperating with the screw 2 is provided in the second plug hole 12. In this embodiment, the depth of the second plug hole 12 is equal to the exposed length of the screw 2. During actual assembly, the first plug hole 11 is connected to the output shaft of the electric screwdriver, and the protruding section 1421 in the second plug hole 12 is inserted into the screw 2. When the electric screwdriver is started, the electric screwdriver drives the limiting fixture to rotate, so that the screw 2 is screwed into the threaded hole of the connector. When the lower end face of the limiting fixture abuts the upper end face of the connector, the screw 2 is screwed into place. With this design, it is only necessary to control the depth of the second plug hole 12 for accommodating the screw 2 to achieve control of the exposed length of the screw 2. Therefore, there is no need to measure the screw 2 before and after assembly of the screw 2. Only one person is needed to complete the assembly of the screw 2, thereby improving production efficiency and reducing labor costs.

[0028] See also Figures 2 and 3 As shown, Figure 2 This is a schematic diagram of the structural decomposition of the limit fixture. Figure 3 for Figure 2A full cross-sectional view of the fixture body 1 includes a main body 13 and a plug-in portion 14 that is detachably connected to the main body 13. The plug-in portion 14 is disposed within the main body 13. The first plug-in hole 11 is formed by one end of the main body 13 being recessed inwardly along the axis of the main body 13. The second plug-in hole 12 is formed by the other end of the main body 13 being recessed inwardly along the axis of the main body 13. A third plug-in hole 15 is disposed within the main body 13, communicating with the first plug-in hole 11 and the second plug-in hole 12. The lower end of the plug-in portion 14 extends into the second plug-in hole 12 to form a protruding section 1421 for mating with the screw 2. This design allows the plug-in portion 14 to be replaced according to actual needs, allowing the same fixture body to be adapted for assembly of screws 2 of various specifications or types, greatly reducing the cost and time required to replace the entire fixture due to changes in the specifications of the screw 2. Secondly, during long-term use, the plug-in part 14 of the fixture may need to be replaced due to wear. With the above design, only the damaged plug-in part 14 needs to be replaced without replacing the entire limiting fixture, thereby significantly reducing maintenance costs and increasing the service life of the fixture.

[0029] See also Figure 2 As shown, the inner cavity of the first plug hole 11 is a hexagonal cavity. This design, because the hexagonal cavity has six symmetrical planes, allows the first plug hole 11 to fit closely with the shape of the output shaft of the electric screwdriver, reducing shaking or slipping caused by shape mismatch, so that when the output shaft of the electric screwdriver rotates, it can drive the fixture body 1 to rotate with it.

[0030] See also Figure 1 As shown, the second insertion hole 12 is a cylindrical hole. In this embodiment, the depth of the second insertion hole 12 is equal to the exposed length of the screw rod 2. When the screw rod 2 is inserted into the second insertion hole 12 and engages with the protruding section 1421 in the second insertion hole 12, the upper end surface of the screw rod 2 contacts the bottom surface of the second insertion hole 12.

[0031] See also Figure 1 As shown, the depth of the second plug hole 12 is 13.1 mm to 13.9 mm.

[0032] See also Figure 2 As shown, the protruding section 1421 is a regular hexagonal prism. When the protruding section 1421 is inserted into the hexagonal inner hole of the screw rod 2, the outer wall of the protruding section 1421 contacts the wall of the hexagonal inner hole of the screw rod 2. Specifically, six uniform contact surfaces can be formed between the protruding section 1421 in the shape of a regular hexagonal prism and the hexagonal inner hole of the screw rod 2, ensuring a tight fit between the protruding section 1421 in the shape of a regular hexagonal prism and the hexagonal inner hole of the screw rod 2, thereby ensuring synchronization between the two during rotation. When an external force (such as an electric screwdriver or a hand tool) drives the protruding section 1421 to rotate, the rotation can be immediately and stably transmitted to the screw rod 2, avoiding slippage or hysteresis caused by a loose fit.

[0033] See also Figure 1 As shown, the main body 13 is provided with a mounting hole 131 that passes through the wall thickness of the main body 13, and the mounting hole 131 is connected to the first plug-in hole 11. Specifically, the inner wall of the mounting hole 131 is provided with a thread for mating with a wrench. With this design, when it is necessary to manually screw the screw 2 into the connector, it is only necessary to insert the wrench into the corresponding mounting hole 131, and manually rotate the limiting jig to drive the screw 2 to be screwed into the connector. When the lower end face of the limiting jig contacts the upper end face of the connector, the screw 2 cannot be screwed into the connector, that is, the screw 2 is screwed into place, and then the limiting jig is removed from the screw 2 to complete the assembly of the screw 2. There is no need to measure the length of the screw 2 during the assembly process of the screw 2.

[0034] See also Figures 2 and 3 As shown, the inner cavity of the third plugging hole 15 is a hexagonal cavity, and the aperture of the first plugging hole 11 is larger than the aperture of the third plugging hole 15 .

[0035] See also Figure 2 As shown, the plug-in portion 14 includes a first section 141 and a second section 142. The first section 141 and the second section 142 are both regular hexagonal prisms. The cross-sectional area of ​​the first section 141 is greater than the cross-sectional area of ​​the second section 142. The first section 141 is located in the first plug-in hole 11, and the first section 141 contacts the inner wall of the first plug-in hole 11. A portion of the second section 142 is located in the third plug-in hole 15, and the second section 142 contacts the inner wall of the third plug-in hole 15.

[0036] In this embodiment, Figure 4 This is a schematic diagram of the use of the limiting fixture and connector provided in this embodiment. Figure 5 This is a schematic diagram after screw 2 is installed in place.

[0037] It should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the application product is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0038] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

[0039] The above is an exemplary description of the present utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the present utility model patent is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present utility model patent, or the concept and technical solution of the present utility model patent are directly applied to other occasions without improvement, they are all within the scope of protection of the present utility model.

Claims

1. A limiting fixture for screw assembly, characterized in that: include: A jig body (1) is provided with a first plug hole (11) at one end of the jig body (1), and the first plug hole (11) is used to cooperate with the output shaft of the electric screwdriver; the other end of the jig body (1) is provided with a second plug hole (12) for accommodating a screw rod (2), and a protruding section (1421) for cooperating with the screw rod (2) is provided in the second plug hole (12).

2. A screw assembly limiting fixture according to claim 1, characterized in that: The fixture body (1) includes a main body (13) and a plug-in portion (14) detachably connected to the main body (13), the plug-in portion (14) is arranged in the main body (13), the first plug-in hole (11) is formed by one end of the main body (13) being recessed inwardly along the axial direction of the main body (13), the second plug-in hole (12) is formed by the other end of the main body (13) being recessed inwardly along the axial direction of the main body (13), the main body (13) is provided with a third plug-in hole (15) connected to the first plug-in hole (11) and the second plug-in hole (12), the lower end of the plug-in portion (14) extends into the second plug-in hole (12) to form the protruding section (1421) for matching and connecting with the screw (2).

3. The screw assembly limiting fixture according to claim 1, characterized in that: The inner cavity of the first plug hole (11) is a hexagonal cavity.

4. The screw assembly limiting fixture according to claim 1, characterized in that: The second plug-in hole (12) is a cylindrical hole.

5. The screw assembly limiting fixture according to claim 1, characterized in that: The depth of the second plug hole (12) is 13.1 mm to 13.9 mm.

6. The screw assembly limiting fixture according to claim 1, characterized in that: The protruding section (1421) is a regular hexagonal column. When the protruding section (1421) is inserted into the inner hexagonal hole of the screw rod (2), the outer wall of the protruding section (1421) contacts the inner hexagonal hole wall of the screw rod (2).

7. The screw assembly limiting fixture according to claim 2, characterized in that: The main body (13) is provided with a mounting hole (131) penetrating the wall thickness of the main body (13), and the mounting hole (131) is connected to the first plug hole (11).

8. The screw assembly limiting fixture according to claim 7, characterized in that: The inner wall of the mounting hole (131) is provided with a thread for matching with a wrench.

9. The screw assembly limiting fixture according to claim 2, characterized in that: The inner cavity of the third plug hole (15) is a hexagonal cavity, and the aperture of the first plug hole (11) is larger than the aperture of the third plug hole (15).

10. The screw rod assembly limiting fixture according to claim 9, characterized in that: The plug-in portion (14) comprises a first section (141) and a second section (142); the first section (141) and the second section (142) are both regular hexagonal columns; the cross-sectional area of ​​the first section (141) is greater than the cross-sectional area of ​​the second section (142); the first section (141) is located in the first plug-in hole (11), and the first section (141) contacts the inner wall of the first plug-in hole (11); a portion of the second section (142) is located in the third plug-in hole (15), and the second section (142) contacts the inner wall of the third plug-in hole (15).

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