Sleeve connector with constant torque

Abstract

The utility model discloses a sleeve connector with constant torque, which comprises a driving mechanism, a driven mechanism and a torque limiting mechanism, the driving mechanism comprises a shell and a driving ratchet wheel, and the driving ratchet wheel is arranged at the bottom of the shell; the driven mechanism comprises a driven shaft rotationally arranged in the shell, a driven ratchet wheel is fixedly installed on the shaft wall of the driven shaft and meshed with the driving ratchet wheel, a square shaft is fixedly arranged at the lower end of the driven shaft, and an anti-disengaging clamping ring, an anti-disengaging steel ball and an anti-disengaging spring are arranged on the shaft wall of the square shaft. The sleeve connector is high in precision, stability, standardization and compliance, simple and durable in structure, convenient and efficient to operate, good in safety advantage and high in cost effectiveness, and the problems that a traditional torque wrench is poor in precision, errors are prone to occurring, efficiency is low, adjustment time is long, the traditional torque wrench is prone to being interfered by human factors, and the traditional torque wrench is prone to being damaged are solved.

Description

Technical Field

[0001] This utility model relates to the field of hardware tool products and accessories manufacturing technology, specifically a sleeve connector with a fixed torque. Background Technology

[0002] Traditional torque wrenches have the following drawbacks in automotive repair:

[0003] Pointer-type torque wrenches have low reading accuracy, large errors, high operational dependence, poor environmental adaptability, and limited mechanical structure.

[0004] Adjustable torque wrench: High risk of misoperation, requires regular calibration, poor ease of operation, and insufficient structural complexity and durability;

[0005] Pneumatic and electric wrenches: low torque control accuracy, complex and costly maintenance, high operational safety risks, high system dependence, and high maintenance costs.

[0006] To address this, a sleeve connector with a constant torque is proposed. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sleeve connector with a constant torque to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution.

[0009] This utility model provides a sleeve connector with a constant torque, including an active mechanism, a driven mechanism and a torque limiting mechanism. The active mechanism includes a housing and an active ratchet, and the active ratchet is installed at the bottom of the housing.

[0010] The driven mechanism includes a driven shaft rotatably disposed inside the housing. A driven ratchet is fixedly installed on the shaft wall of the driven shaft. The driven ratchet meshes with the driving ratchet. A square shaft is fixedly provided at the lower end of the driven shaft. The shaft wall of the square shaft is provided with an anti-disengagement clasp, an anti-disengagement steel ball, and an anti-disengagement spring.

[0011] The torque limiting mechanism includes a diaphragm spring assembly, an adjusting nut, and a locking nut. The diaphragm spring assembly is sleeved on the shaft wall of the driven shaft and is located above the driven ratchet. The upper end of the driven shaft is threaded. The adjusting nut and the locking nut are both threadedly connected to the upper end of the driven shaft and lock the diaphragm spring assembly.

[0012] Preferably, the bottom of the housing is provided with a regular octagonal forming hole, the side wall of the active ratchet is provided with a regular octagonal boss that matches the regular octagonal forming hole, and the bottom of the housing is provided with a spring retaining ring to fix the active ratchet.

[0013] Preferably, the shaft wall of the square shaft is provided with a mounting groove, the anti-detachment spring is fixedly disposed inside the mounting groove, the anti-detachment steel ball is located inside the mounting groove, and the side wall of the anti-detachment steel ball is fixedly connected to one end of the anti-detachment spring. The anti-detachment retaining ring is disposed at the opening of the mounting groove and retains the anti-detachment steel ball.

[0014] Preferably, the outer shell is a cylindrical shell with an outer diameter of 23 mm and a height of 61 mm.

[0015] Preferably, the upper part of the driving ratchet has 16 ratchet teeth in a 1:3 ratio, the lower part of the driven ratchet has 16 ratchet teeth in a 1:3 ratio, and the interior of the driven ratchet is provided with a square through hole that matches the square shaft.

[0016] Preferably, the lower end of the square shaft is connected to the sleeve via the anti-detachment steel ball.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Torque is transmitted through the meshing of the active and driven ratchet. When the torque is less than the static friction generated by the ratchet meshing, unidirectional transmission is achieved. When it is greater, the ratchet will run over the limit. This avoids the risk of exceeding the range due to the operator's experience and strength, ensures stable force control, prevents component damage, and eliminates the need to rely on the operator's experience and strength control, reducing human interference and making operation convenient and efficient. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention after it has been cut open;

[0021] Figure 3 This is a three-dimensional structural diagram of a portion of the outer shell of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the driven shaft and the square shaft of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the square shaft of this utility model after partial cross-section.

[0024] In the diagram: 1. Driving mechanism; 11. Housing; 12. Driving ratchet; 13. Octagonal forming hole; 14. Spring retaining ring; 2. Driven mechanism; 21. Driven shaft; 22. Driven ratchet; 23. Square shaft; 24. Anti-detachment retaining ring; 25. Anti-detachment steel ball; 26. Anti-detachment spring; 27. Mounting slot; 3. Torque limiting mechanism; 31. Diaphragm spring assembly; 32. Adjusting nut; 33. Locking nut. Detailed Implementation

[0025] A sleeve connector with a fixed torque, such as Figure 1-5 As shown, it includes an active mechanism 1, a driven mechanism 2, and a torque limiting mechanism 3. The active mechanism 1 includes a housing 11 and an active ratchet 12. The housing 11 is a cylindrical housing with an outer diameter of 23 mm and a height of 61 mm. The active ratchet 12 is installed at the bottom of the housing 11.

[0026] The driven mechanism 2 includes a driven shaft 21 rotatably disposed inside the housing 11. A driven ratchet 22 is fixedly mounted on the shaft wall of the driven shaft 21. The driven ratchet 22 meshes with the driving ratchet 12. The upper part of the driving ratchet 12 has 16 ratchet teeth in a 1:3 ratio, and the lower part of the driven ratchet 22 also has 16 ratchet teeth in a 1:3 ratio. A square shaft 23 is fixedly disposed at the lower end of the driven shaft 21. The interior of the driven ratchet 22 has a square through hole that matches the square shaft 23. The shaft wall is provided with an anti-detachment retaining ring 24, an anti-detachment steel ball 25, and an anti-detachment spring 26. The shaft wall of the square shaft 23 is provided with an installation groove 27. The anti-detachment spring 26 is fixedly installed inside the installation groove 27. The anti-detachment steel ball 25 is located inside the installation groove 27, and the side wall of the anti-detachment steel ball 25 is fixedly connected to one end of the anti-detachment spring 26. The anti-detachment retaining ring 24 is set at the opening of the installation groove 27 and holds the anti-detachment steel ball 25 in place. The lower end of the square shaft 23 is connected to the sleeve through the anti-detachment steel ball 25.

[0027] The torque limiting mechanism 3 includes a diaphragm spring assembly 31, an adjusting nut 32, and a locking nut 33. The diaphragm spring assembly 31 is sleeved on the shaft wall of the driven shaft 21 and is located above the driven ratchet 22. The upper end of the driven shaft 21 is provided with a thread (10mm in length and 8mm in diameter). The adjusting nut 32 and the locking nut 33 are both threaded to the upper end of the driven shaft 21 and lock the diaphragm spring assembly 31.

[0028] The bottom of the housing 11 is provided with an octagonal forming hole 13, and the side wall of the active ratchet 12 is provided with an octagonal boss that matches the octagonal forming hole 13. The octagonal structure can ensure that the active ratchet 12 rotates when the housing 11 rotates. The bottom of the housing 11 is provided with a spring retaining ring 14 to fix the active ratchet 12. The spring retaining ring 14 can stably install the active ratchet 12.

[0029] In summary: the top of the housing 11 of the active mechanism 1 is connected to a wrench, and the bottom octagonal hole 13 engages with the octagonal boss of the active ratchet 12, and is fixed by a spring retaining ring 14;

[0030] The driven shaft 21 of the driven mechanism 2 passes through the housing 11, and the driven ratchet 22 on it meshes with the driving ratchet 12. The square shaft 23 at the lower end of the driven shaft 21 pushes up the anti-detachment steel ball 25 through the anti-detachment spring 26 in the mounting groove 27, and is limited by the anti-detachment retaining ring 24, thereby connecting the sleeve.

[0031] The diaphragm spring assembly 31 of the torque limiting mechanism 3 is sleeved on the driven shaft 21 and located above the driven ratchet 22. The torque threshold is set by pressing the diaphragm spring assembly 31 along the upper end thread of the driven shaft 21 by the adjusting nut 32 and the locking nut 33.

[0032] When the wrench is applied, the housing 11 rotates. Since the housing 11 is integrally connected to the active ratchet 12 and drives the active ratchet 12 to rotate, the torque is transmitted to the driven ratchet 22 and the driven shaft 21 through the active ratchet 12. This drives the sleeve to rotate through the square shaft 23 at the lower end of the driven shaft 21. If the torque exceeds the threshold, the elastic force of the diaphragm spring assembly 31 is insufficient to maintain the ratchet meshing friction between the active ratchet 12 and the driven ratchet 22, resulting in the active ratchet 12 spinning freely. It is not necessary to continue driving the driven shaft 21 to rotate, thus achieving over-limit protection.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sleeve connector with a fixed torque, comprising an active mechanism (1), a driven mechanism (2), and a torque limiting mechanism (3), characterized in that: The active mechanism (1) includes a housing (11) and an active ratchet (12), the active ratchet (12) being mounted on the bottom of the housing (11); The driven mechanism (2) includes a driven shaft (21) rotatably disposed inside the housing (11). A driven ratchet (22) is fixedly installed on the shaft wall of the driven shaft (21). The driven ratchet (22) meshes with the driving ratchet (12). A square shaft (23) is fixedly provided at the lower end of the driven shaft (21). The shaft wall of the square shaft (23) is provided with an anti-detachment retaining ring (24), an anti-detachment steel ball (25), and an anti-detachment spring (26). The torque limiting mechanism (3) includes a diaphragm spring assembly (31), an adjusting nut (32), and a locking nut (33). The diaphragm spring assembly (31) is sleeved on the shaft wall of the driven shaft (21) and is located above the driven ratchet (22). The upper end of the driven shaft (21) is threaded. The adjusting nut (32) and the locking nut (33) are both threaded to the upper end of the driven shaft (21) and lock the diaphragm spring assembly (31).

2. The sleeve connector with constant torque according to claim 1, characterized in that: The bottom of the housing (11) is provided with an octagonal forming hole (13), the side wall of the active ratchet (12) is provided with an octagonal boss that matches the octagonal forming hole (13), and the bottom of the housing (11) is provided with a spring retaining ring (14) to fix the active ratchet (12).

3. The sleeve connector with constant torque according to claim 1, characterized in that: The shaft wall of the square shaft (23) is provided with an installation groove (27). The anti-detachment spring (26) is fixedly installed inside the installation groove (27). The anti-detachment steel ball (25) is located inside the installation groove (27), and the side wall of the anti-detachment steel ball (25) is fixedly connected to one end of the anti-detachment spring (26). The anti-detachment retaining ring (24) is set at the opening of the installation groove (27) and holds the anti-detachment steel ball (25).

4. The sleeve connector with constant torque according to claim 1, characterized in that: The outer shell (11) is a cylindrical shell with an outer diameter of 23 mm and a height of 61 mm.

5. The sleeve connector with constant torque according to claim 1, characterized in that: The upper part of the active ratchet (12) has 16 ratchet teeth in a 1:3 ratio, and the lower part of the driven ratchet (22) has 16 ratchet teeth in a 1:3 ratio. The driven ratchet (22) has a square through hole inside that matches the square shaft (23).

6. The sleeve connector with constant torque according to claim 1, characterized in that: The lower end of the square shaft (23) is connected to the sleeve via the anti-detachment steel ball (25).

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