Torque multiplier with double counter-force arms

By designing a double reaction arm structure, the problem of a single reaction arm being unable to withstand huge reaction forces is solved, thus achieving stable operation and improved safety of the torque multiplier.

CN224255226UActive Publication Date: 2026-05-19NORBAR TORQUE TOOLS (SHANGHAI) LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NORBAR TORQUE TOOLS (SHANGHAI) LTD
Filing Date
2025-04-27
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing torque multipliers use a single reaction arm structure, which is difficult to withstand huge reaction forces, is prone to deformation or damage, affects service life and poses safety hazards.

Method used

It adopts a double reaction arm structure, including a circumferential gear, a connecting plate, a vertical reaction arm, a limiting groove, a slider, a spring pressure column, a horizontal reaction arm, and an adjustment component. The height and spacing are adjusted by sliding the slider and the adjusting ball within the limiting groove, so as to evenly distribute the reaction force.

Benefits of technology

The torque multiplier's ability to withstand reaction forces has been improved, resulting in smoother equipment operation, reduced torque fluctuations on the output shaft, extended equipment lifespan, and enhanced safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The torque multiplier comprises a core transmission assembly, a torsion head, a driving square head and a counter-force mechanism, the torsion head is arranged at the top of the core transmission assembly, the counter-force mechanism is arranged at the bottom of the core transmission assembly, and the driving square head is arranged at the bottom of the counter-force mechanism; the counter-force mechanism comprises a circumferential gear, a connecting plate, a vertical counter-force arm, a limiting sliding groove, a plurality of limiting holes, a sliding block, a spring pressing column, a transverse counter-force arm, a ball sliding groove, a ball limiting groove and an adjusting assembly. The adjusting assembly comprises an adjusting ball, a nut cylinder and a limiting ring. According to the scheme, the bearing capacity of the torque multiplier to counter-acting force is greatly improved, equipment can operate more stably, and torque fluctuation of the output shaft can be obviously reduced.
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Description

Technical Field

[0001] This utility model relates to the field of small electric gun technology, specifically a torque multiplier with double reaction arms. Background Technology

[0002] In the field of mechanical transmission, torque multipliers are widely used in scenarios that require increased torque output, such as tightening large bolts, assembling and maintaining mechanical equipment, etc. A torque multiplier is a device that increases the torque for the operator.

[0003] Existing torque multipliers typically employ a single reaction arm structure. When the torque multiplier outputs a large torque during operation, the single reaction arm is unable to withstand the enormous reaction force, making it prone to deformation or even damage. This not only affects the service life of the torque multiplier but may also lead to safety hazards during operation.

[0004] Therefore, a solution is needed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a torque multiplier with double reaction arms to solve the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A torque multiplier with double reaction arms, characterized in that it includes a core transmission assembly, a torsion head, a drive square head, and a reaction mechanism, wherein the torsion head is disposed at the top of the core transmission assembly, the reaction mechanism is disposed at the bottom of the core transmission assembly, and the drive square head is disposed at the bottom of the reaction mechanism.

[0009] The reaction mechanism includes a circumferential gear, a connecting plate, a vertical reaction arm, a limiting groove, several limiting holes, a slider, a spring pressure column, a horizontal reaction arm, a ball groove, a ball limiting groove, and an adjustment component. The connecting plate is disposed at the left and right ends of the circumferential gear. The vertical reaction arm is disposed at the end of each connecting plate away from the circumferential gear. The limiting groove is disposed inside the vertical reaction arm. Several limiting holes are vertically and evenly disposed at the front and rear ends of the vertical reaction arm. The slider is disposed inside the limiting groove. The spring pressure column is disposed at the front and rear ends of the slider. The horizontal reaction arm is disposed at the end of the slider away from the circumferential gear. The ball groove is disposed inside the horizontal reaction arm. The ball limiting grooves are oppositely disposed at the front and rear ends of the ball groove. The adjustment component is disposed inside the ball groove.

[0010] Preferably, the vertical reaction arm has a cuboid structure, the horizontal reaction arm has a cuboid structure, the ball limiting groove has an arc-shaped structure, and the circumferential gear, the connecting plate, and the vertical reaction arm are integrally formed.

[0011] Preferably, the adjusting assembly includes an adjusting ball, a nut sleeve, and a limiting ring. The adjusting ball is located inside the ball groove, the nut sleeve is disposed at the bottom of the adjusting ball, and the limiting ring is disposed at the top of the periphery of the nut sleeve.

[0012] Preferably, the adjusting ball, nut cylinder, and limiting ring are integrally formed.

[0013] This invention provides a torque multiplier with double reaction arms. It has the following beneficial effects:

[0014] 1. This solution adjusts the height of the transverse counterweight arm by sliding the slider up and down within the limiting groove, making it suitable for fixing nuts of different heights. At the same time, the adjusting ball, in conjunction with the limiting ring, slides laterally within the ball groove to adjust the distance between the ball and the circumferential gear, making it suitable for fixing nuts with different spacings. This significantly improves the applicability of the torque multiplier.

[0015] 2. In addition, compared with a single reaction arm, the double reaction arm structure can evenly distribute the reaction force generated by the torque to the two reaction arms, which greatly improves the torque multiplier's ability to withstand reaction forces; the symmetrically arranged double reaction arms can better balance the unbalanced forces generated during torque transmission, making the equipment run more smoothly; the torque balancing effect of the double reaction arms significantly reduces the torque fluctuation of the output shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the reaction mechanism structure of this utility model;

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

[0019] Figure 4 This is a schematic diagram of the vertical reaction arm structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model.

[0021] In the diagram, 1-core transmission component; 2-torsion head; 3-drive square head; 4-reaction mechanism; 41-circumferential gear; 42-connecting plate; 43-vertical reaction arm; 44-limiting slide groove; 45-several limiting holes; 46-slider; 47-spring pressure column; 48-horizontal reaction arm; 49-ball slide groove; 410-ball limiting groove; 411-adjusting component; 4111-adjusting ball; 4112-nut cylinder; 4113-limiting ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 The present invention provides a technical solution to achieve this: it includes a core transmission component 1, a torsion head 2, a drive square head 3, and a reaction mechanism 4. The torsion head 2 is located at the top of the core transmission component 1, the reaction mechanism 4 is located at the bottom of the core transmission component 1, and the drive square head 3 is located at the bottom of the reaction mechanism 4.

[0024] The core reaction mechanism 4 includes a circular gear 41, a connecting plate 42, a vertical reaction arm 43, a limiting groove 44, several limiting holes 45, a slider 46, a spring pressure column 47, a horizontal reaction arm 48, a ball groove 49, a ball limiting groove 410, and an adjustment component 411. The connecting plate 42 is located at the left and right ends of the circular gear 41. The vertical reaction arm 43 is located at the end of each connecting plate 42 away from the circular gear 41. The limiting groove 44 is located inside the vertical reaction arm 43. Several limiting holes 45 are vertically and evenly arranged at the front and rear ends of the vertical reaction arm 43. The slider 46 is located inside the limiting groove 44. The spring pressure column 47 is located at the front and rear ends of the slider 46. The horizontal reaction arm 48 is located at the end of the slider 46 away from the circular gear 41. The ball groove 49 is located inside the horizontal reaction arm 48. The ball limiting grooves 410 are oppositely arranged at the front and rear ends of the ball groove 49. The adjustment component 411 is located inside the ball groove 49. The height of the transverse counterforce arm 48 can be adjusted by sliding the slider 46 up and down within the limiting groove 44, which is suitable for fixing nuts of different heights.

[0025] In detail, the vertical reaction arm 43 has a cuboid structure, the horizontal reaction arm 48 has a cuboid structure, the ball limiting groove 410 has an arc structure, and the circumferential gear 41, the connecting plate 42 and the vertical reaction arm 43 are integrally formed.

[0026] The adjusting assembly 411 includes an adjusting ball 4111, a nut sleeve 4112, and a limiting ring 4113. The adjusting ball 4111 is located inside the ball groove 49, the nut sleeve 4112 is located at the bottom of the adjusting ball 4111, and the limiting ring 4113 is located at the top of the outer periphery of the nut sleeve 4112. The adjusting ball 4111, in conjunction with the limiting ring 4113, slides laterally within the ball groove 49 to adjust the distance between itself and the circumferential gear 41. This is suitable for fixing nuts with different distances, significantly improving the applicability of the torque multiplier.

[0027] The adjusting ball 4111, the nut sleeve 4112, and the limiting ring 4113 are integrally formed.

[0028] Compared to a single reaction arm, the double reaction arm structure can evenly distribute the reaction force generated by the torque to the two reaction arms, which greatly improves the torque multiplier's ability to withstand reaction forces; the symmetrically arranged double reaction arms can better balance the unbalanced forces generated during torque transmission, making the equipment run more smoothly; the torque balancing effect of the double reaction arms significantly reduces the torque fluctuation of the output shaft.

[0029] Working principle: First, adjust the position of the adjusting ball 4111 in the ball limit groove 410 by adjusting the distance between every two nuts. Adjust the height of the slider 46 and the horizontal reaction arm 48 by adjusting the height of the nut. Then, cover the nuts on the left and right sides of the nut locked by the current drive square head 3 with each nut sleeve 4112. Then, you can work on the twist head 2 by using the external screwdriver cover.

[0030] The components of this utility model are: 1-core transmission component; 2-torsion head; 3-drive square head; 4-reaction mechanism; 41-circumferential gear; 42-connecting plate; 43-vertical reaction arm; 44-limiting slide groove; 45-several limiting holes; 46-slider; 47-spring pressure column; 48-horizontal reaction arm; 49-ball slide groove; 410-ball limiting groove; 411-adjusting component; 4111-adjusting ball; 4112-nut cylinder; 4113-limiting ring. These components are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is that existing torque multipliers usually adopt a single reaction arm structure. When the torque multiplier outputs a large torque during operation, the single reaction arm is difficult to withstand the huge reaction force and is prone to deformation or even damage. This not only affects the service life of the torque multiplier but may also lead to safety hazards during operation. This invention significantly improves the torque multiplier's ability to withstand reaction forces, enabling the equipment to operate more smoothly and significantly reducing torque fluctuations on the output shaft.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A torque multiplier with double reaction arms, characterized in that: It includes a core transmission assembly (1), a torsion head (2), a drive square head (3), and a reaction mechanism (4). The torsion head (2) is located on the top of the core transmission assembly (1), the reaction mechanism (4) is located on the bottom of the core transmission assembly (1), and the drive square head (3) is located on the bottom of the reaction mechanism (4). The reaction mechanism (4) includes a circumferential gear (41), a connecting plate (42), a vertical reaction arm (43), a limiting groove (44), several limiting holes (45), a slider (46), a spring pressure column (47), a horizontal reaction arm (48), a ball groove (49), a ball limiting groove (410), and an adjusting assembly (411). The connecting plate (42) is located at the left and right ends of the circumferential gear (41), and the vertical reaction arm (43) is located at the end of each connecting plate (42) away from the circumferential gear (41). The limiting groove (44) is located inside the vertical reaction arm (43). The limiting holes (45) are vertically and evenly arranged at the front and rear ends of the vertical reaction arm (43). The slider (46) is arranged inside the limiting groove (44). The spring pressure column (47) is arranged at the front and rear ends of the slider (46). The horizontal reaction arm (48) is arranged at the end of the slider (46) away from the circumferential gear (41). The ball groove (49) is arranged inside the horizontal reaction arm (48). The ball limiting groove (410) is arranged opposite to the front and rear ends of the ball groove (49). The adjusting component (411) is arranged inside the ball groove (49).

2. The torque multiplier with double reaction arms according to claim 1, characterized in that: The vertical counterforce arm (43) has a cuboid structure, the horizontal counterforce arm (48) has a cuboid structure, the ball limiting groove (410) has an arc-shaped structure, and the circumferential gear (41), the connecting plate (42) and the vertical counterforce arm (43) are integrally formed.

3. The torque multiplier with double reaction arms according to claim 1, characterized in that: The adjustment assembly (411) includes an adjustment ball (4111), a nut cylinder (4112), and a limiting ring (4113). The adjustment ball (4111) is located inside the ball groove (49), the nut cylinder (4112) is located at the bottom of the adjustment ball (4111), and the limiting ring (4113) is located at the top of the periphery of the nut cylinder (4112).

4. The torque multiplier with double reaction arms according to claim 3, characterized in that: The adjusting ball (4111), nut cylinder (4112) and limiting ring (4113) are integrally formed.