A quick fixing nut wrench convenient for use in a narrow space

Abstract

The utility model relates to a wrench tool technical field discloses a kind of quick fixed nut wrenchs convenient to use in narrow space, including handle, the inside sliding connection of handle has driving mechanism, the inside recess of handle is equipped, the top of handle is fixedly connected with rotating mechanism, the front side fixedly connected with connecting block of rotating mechanism, the front side fixedly connected with adjusting mechanism of connecting block, the front side fixedly connected with square head of adjusting mechanism, the driving mechanism includes protective sleeve, the inside sliding connection of protective sleeve has support plate, the top of support plate is fixedly connected with spring one. In the utility model, the length of handle can be adjusted according to the depth of narrow space, the effect of easily stretching into narrow area is realized, the head of wrench and handle can be freely rotated within a certain angle range, and the effect that wrench can easily cope with various complex angles in narrow space is realized.

Description

Technical Field

[0001] This utility model relates to the field of wrench installation technology, and in particular to a quick-fixing nut wrench that is easy to use in confined spaces. Background Technology

[0002] A quick-release nut wrench, designed for use in confined spaces, is a compact wrench tool with a ratchet mechanism. It allows for rapid tightening or loosening of nuts in limited areas without the need for repeated tool removal and angle adjustments. Typically featuring an ultra-thin head and socket design, it is compatible with various nut sizes and boasts lightweight construction and high torque transmission efficiency. It is widely used in automotive repair, equipment installation, and machinery maintenance.

[0003] A ratchet wrench mainly consists of a handle, a rotating mechanism, and a socket. Its working principle is that the pawl and ratchet engage in one direction, so that the wrench head can only transmit torque in one direction. When rotating in the opposite direction, it spins freely, thus allowing for continuous tightening or loosening of fasteners without having to repeatedly remove the wrench.

[0004] In existing technologies, some ratchet wrenches have non-adjustable handle lengths when used in confined spaces, making it difficult to find a suitable angle for applying force in narrow environments, or even to insert them into the operating area. To address these issues, a quick-fixing nut wrench that is easy to use in confined spaces is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a quick-fixing nut wrench that is easy to use in confined spaces, aiming to improve the problem of non-adjustable handle length in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-release nut wrench for use in confined spaces includes a handle, a drive mechanism slidably connected inside the handle, a groove inside the handle, a rotating mechanism fixedly connected to the top of the handle, a connecting block fixedly connected to the front side of the rotating mechanism, an adjusting mechanism fixedly connected to the front side of the connecting block, and a square head fixedly connected to the front side of the adjusting mechanism.

[0008] The drive mechanism includes a protective sleeve, a support plate is slidably connected inside the protective sleeve, a spring is fixedly connected to the top of the support plate, and a telescopic component is fixedly connected to the top of the support plate.

[0009] As a further description of the above technical solution:

[0010] The telescopic assembly includes a support rod, the bottom of which is fixedly connected to the top of the support plate, a connecting rod fixedly connected to the top of the support rod, a stop block fixedly connected to the top of the connecting rod, a telescopic cylinder slidably connected to the outside of the support rod, and a sliding ball slidably connected to the inside of the telescopic cylinder.

[0011] As a further description of the above technical solution:

[0012] The adjustment mechanism includes a universal joint fork, with two ball shafts slidably connected inside the universal joint fork, and a cross shaft fixedly connected to the outside of the two ball shafts;

[0013] As a further description of the above technical solution:

[0014] The rotating mechanism includes a protective shell, a ratchet is rotatably connected inside the protective shell, a second spring is fixedly connected inside the protective shell, a pawl is fixedly connected to the left side of the second spring, and a paddle is rotatably connected inside the protective shell.

[0015] As a further description of the above technical solution:

[0016] The top of the spring is fixedly connected to the inside of the protective sleeve, and the top of the protective sleeve is fixedly connected to the bottom of the telescopic cylinder;

[0017] As a further description of the above technical solution:

[0018] The top of the protective sleeve contacts the bottom of the handle, and the top of the pawl engages with the outside of the ratchet.

[0019] As a further description of the above technical solution:

[0020] The bottom of the paddle contacts the right side of one of the pawls, while the bottom of the paddle does not contact the left side of the other pawl.

[0021] As a further description of the above technical solution:

[0022] The outside of the slider is in contact with the outside of the stop, and the outside of the slider is in contact with the inside of the groove.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by pressing the support plate to push the stop block upward, and at the same time pulling the protective sleeve to drive the telescopic cylinder to squeeze the slider out of the groove, the telescopic cylinder can be pulled out of the handle. When the telescopic cylinder carrying the slider passes through another groove, the support plate is released. Under the action of the spring, the stop block will squeeze the slider into the groove. At this time, the stop block will restrict the movement of the slider, realizing the telescopic locking function. Compared with the prior art, it can adjust the length of the handle according to the depth of the narrow space, so as to easily reach into the narrow area.

[0025] 2. In this utility model, the universal joint drives the cross shaft to swing within a certain angle range. The ball shaft is installed at the connection between the cross shaft and the universal joint fork to reduce friction and ensure flexible rotation. This achieves the function of adjusting the angle. Compared with the prior art, it allows the wrench head and handle to rotate freely within a certain angle range, making it convenient for the operator to tighten or loosen nuts in hard-to-reach locations. This enables the wrench to easily handle various complex angles in confined spaces. Attached Figure Description

[0026] Figure 1 A three-dimensional schematic diagram of a quick-fixing nut wrench that is convenient for use in confined spaces, as proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the handle of a quick-fixing nut wrench that is convenient for use in confined spaces, as proposed in this utility model.

[0028] Figure 3 This is a schematic diagram of the ratchet structure of a quick-fixing nut wrench that is convenient for use in confined spaces, as proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the cross shaft of a quick-fixing nut wrench that is convenient for use in confined spaces, as proposed in this utility model.

[0030] Legend:

[0031] 1. Handle; 2. Drive mechanism; 21. Protective cover; 22. Support plate; 23. Spring 1; 24. Telescopic assembly; 241. Support rod; 242. Connecting rod; 243. Stop block; 244. Telescopic cylinder; 245. Sliding ball; 3. Groove; 4. Rotating mechanism; 41. Protective shell; 42. Ratchet; 43. Spring 2; 44. Pawl; 45. Pulley; 5. Connecting block; 6. Adjustment mechanism; 61. Universal joint fork; 62. Ball shaft; 63. Cross shaft; 7. Square head. Detailed Implementation

[0032] 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.

[0033] Example:

[0034] A quick-release nut wrench for easy use in confined spaces, see reference Figure 1 and Figure 2 The device includes a handle 1, which provides a gripping function (this is existing technology and will not be explained further). A drive mechanism 2 is slidably connected inside the handle 1. A groove 3 is provided inside the handle 1 to provide space. A rotating mechanism 4 is fixedly connected to the top of the handle 1. A connecting block 5 is fixedly connected to the front of the rotating mechanism 4 to transmit kinetic energy. An adjustment mechanism 6 is fixedly connected to the front of the connecting block 5. A square head 7 is fixedly connected to the front of the adjustment mechanism 6 to provide support.

[0035] The drive mechanism 2 includes a protective sleeve 21, which can protect the internal parts from damage. A support plate 22 is slidably connected inside the protective sleeve 21. The support plate 22 plays a supporting and connecting role. A spring 23 is fixedly connected to the top of the support plate 22. The spring 23 can provide elastic potential energy. A telescopic component 24 is fixedly connected to the top of the support plate 22.

[0036] The telescopic assembly 24 includes a support rod 241, which provides support. The bottom of the support rod 241 is fixedly connected to the top of the support plate 22, which provides support for the support rod 241. A connecting rod 242 is fixedly connected to the top of the support rod 241, which provides support for the connecting rod 242. A stop block 243 is fixedly connected to the top of the connecting rod 242, which connects the support rod 241 and the stop block 243. A telescopic cylinder 244 is slidably connected to the outside of the support rod 241, allowing the support rod 241 to slide up and down within the telescopic cylinder 244. A slider 245 is slidably connected inside the telescopic cylinder 244, which restricts the movement of the slider 245.

[0037] Specifically, pressing the support plate 22 can push the stop 243 upward, and pulling the protective sleeve 21 can squeeze the slider 245 out of the groove 3, thus pulling the telescopic cylinder 244 out of the handle 1. When the telescopic cylinder 244, carrying the slider 245, passes through another groove 3, the support plate 22 is released. Under the action of the spring 23, the stop 243 will squeeze the slider 245 into the groove 3. At this time, the stop 243 will restrict the movement of the slider 245, thereby achieving the telescopic locking effect.

[0038] Reference Figure 3 and Figure 4 The adjustment mechanism 6 includes a universal joint fork 61, which connects and transmits power. The universal joint fork 61 has two ball shafts 62 internally connected to it. The ball shafts 62 reduce friction and provide support. The two ball shafts 62 are externally fixedly connected to a cross shaft 63, which connects the ball shafts 62 and adapts to angle changes.

[0039] Specifically, the universal joint fork 61 serves as both the power input and output end, and is interconnected via the cross shaft 63. The cross shaft 63 can swing within a certain angle range, while the ball shaft 62 is installed at the connection between the cross shaft 63 and the universal joint fork 61 to reduce friction and ensure flexible rotation.

[0040] Reference Figures 2 to 4 The rotating mechanism 4 includes a protective shell 41, which protects the parts. A ratchet 42 is rotatably connected inside the protective shell 41, which transmits kinetic energy. A second spring 43 is fixedly connected inside the protective shell 41, which provides elastic potential energy. A pawl 44 is fixedly connected to the left side of the second spring 43, which provides elastic potential energy to the pawl 44. A lever 45 is rotatably connected inside the protective shell 41, which can adjust the position of the pawl 44.

[0041] The top of spring 23 is fixedly connected to the inside of protective sleeve 21, which provides support for spring 23. The top of protective sleeve 21 is fixedly connected to the bottom of telescopic cylinder 244, which provides support for telescopic cylinder 244. The top of protective sleeve 21 contacts the bottom of handle 1, which prevents dust from entering the inside of handle 1. The top of pawl 44 is engaged with the outside of ratchet 42, which limits the rotation direction of ratchet 42. The bottom of paddle 45 contacts the right side of one of the pawls 44, which adjusts the position of the pawl 44. While the bottom of paddle 45 contacts the right side of one of the pawls 44, the bottom of paddle 45 does not contact the left side of the other pawl 44. The outside of slider 245 contacts the outside of stop block 243, which limits the movement of slider 245. The outside of slider 245 contacts the inside of groove 3, which provides space for slider 245.

[0042] Specifically, when the grip needs to be extended, the protective cover 21 can provide support for the spring 23, allowing the support rod 241 to rebound. The stop block 243 can restrict the movement of the slider 245, and the groove 3 provides space for the slider 245. In this way, the slider 245 can lock the telescopic cylinder 244 and the handle 1. Moving the lever 45 can adjust the connection between the pawl 44 and the ratchet 42, thereby restricting the rotation direction of the ratchet 42. Moving the lever 45 moves one of the pawls 44 away from the ratchet 42, while the other pawl 44 engages with the ratchet 42 under the action of the spring 43. At this time, the ratchet 42 can only rotate in one direction, and cannot rotate in the other direction due to the restriction of the pawl 44.

[0043] The implementation principle of this application embodiment is as follows: When the handle needs to be extended for operation in a narrow space, pressing the support plate 22 can push the stop 243 to move upward, and at the same time pulling the protective sleeve 21 can squeeze the slider 245 out of the groove 3, so that the telescopic cylinder 244 can be pulled out from the handle 1. When the telescopic cylinder 244 carrying the slider 245 passes through another groove 3, the support plate 22 is released. Under the action of the spring 23, the stop 243 will squeeze the slider 245 into the groove 3. At this time, the stop 243 will restrict the movement of the slider 245, thereby achieving the telescopic locking effect.

[0044] When adjusting the angle of the square head 7 for complex angle operations, the universal joint fork 61 is connected to each other through the cross shaft 63. The cross shaft 63 can swing within a certain angle range, while the ball shaft 62 is installed at the connection between the cross shaft 63 and the universal joint fork 61 to reduce friction and ensure flexible rotation, so that the square head 7 can be connected to the nut in narrow spaces at different angles.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release nut wrench for use in confined spaces, comprising a handle (1), characterized in that: The handle (1) is slidably connected to a drive mechanism (2), the handle (1) is provided with a groove (3), the top of the handle (1) is fixedly connected to a rotating mechanism (4), the front side of the rotating mechanism (4) is fixedly connected to a connecting block (5), the front side of the connecting block (5) is fixedly connected to an adjustment mechanism (6), and the front side of the adjustment mechanism (6) is fixedly connected to a square head (7). The drive mechanism (2) includes a protective sleeve (21), the top of which contacts the bottom of the handle (1), a support plate (22) is slidably connected inside the protective sleeve (21), a spring (23) is fixedly connected to the top of the support plate (22), and a telescopic component (24) is fixedly connected to the top of the support plate (22).

2. The quick-fixing nut wrench for use in confined spaces according to claim 1, characterized in that: The telescopic assembly (24) includes a support rod (241), the bottom of which is fixedly connected to the top of the support plate (22), a connecting rod (242) is fixedly connected to the top of the support rod (241), a stop block (243) is fixedly connected to the top of the connecting rod (242), a telescopic cylinder (244) is slidably connected to the outside of the support rod (241), and a slider (245) is slidably connected to the inside of the telescopic cylinder (244).

3. The quick-fixing nut wrench for use in confined spaces according to claim 1, characterized in that: The adjustment mechanism (6) includes a universal joint fork (61), which has two ball shafts (62) slidably connected inside, and a cross shaft (63) fixedly connected outside the two ball shafts (62).

4. A quick-fixing nut wrench for use in confined spaces according to claim 1, characterized in that: The rotating mechanism (4) includes a protective shell (41), a ratchet (42) is rotatably connected inside the protective shell (41), a second spring (43) is fixedly connected inside the protective shell (41), a pawl (44) is fixedly connected to the left side of the second spring (43), and a paddle (45) is rotatably connected inside the protective shell (41).

5. A quick-fixing nut wrench for use in confined spaces according to claim 2, characterized in that: The top of the spring (23) is fixedly connected to the inside of the protective sleeve (21), and the top of the protective sleeve (21) is fixedly connected to the bottom of the telescopic cylinder (244).

6. A quick-fixing nut wrench for use in confined spaces according to claim 4, characterized in that: The top of the protective sleeve (21) contacts the bottom of the handle (1), and the outside of the pawl (44) is engaged with the outside of the ratchet (42).

7. A quick-fixing nut wrench for use in confined spaces according to claim 4, characterized in that: The bottom of the paddle (45) is in contact with the right side of one of the pawls (44), while the bottom of the paddle (45) is not in contact with the left side of the other pawl (44).

8. A quick-fixing nut wrench for use in confined spaces according to claim 2, characterized in that: The outside of the slider (245) is in contact with the outside of the stop (243), and the outside of the slider (245) is in contact with the inside of the groove (3).

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