Hand screw

Abstract

The utility model discloses a hand screw which comprises a screw rod, a nut and a hand rod. A communicating hole is formed in the side circumferential face of the nut, two hole openings of the communicating hole penetrating through the two opposite sides of the nut are connected with the two hand screwing rods through threads respectively, the tail ends of the hand screwing rods are bent to form annular buckles, an operator can screw the two hand screwing rods with the two hands respectively to drive the screw, and due to the fact that the two hand screwing rods are oppositely away from each other, the screw can be conveniently screwed. Enough space is provided for two hands to act, the lever effect is achieved, more labor is saved, fingers can be put on any finger position groove formed in the side circumferential face of the nut and the end face vertical piece to apply force, and the hand screwing rods which are located on planes with different heights and staggered with the finger position grooves are matched, so that the screwing mode and the force application angle of an operator are more flexible, and the working efficiency is improved. The pressure is shared when the screws are screwed by two hands at the same time, fingers are not prone to being injured when the screws are screwed, and the annular buckles allowing the fingers to penetrate through are of cambered surface structures, so that a large finger stress area can be provided.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to a hand-tightening screw. Background Technology

[0002] Hand-tightening screws, also known as hand-turning screws, are generally made by knurling on the side of the nut to increase the friction between the hand and the nut, so that the screw can be turned by hand without the need for additional auxiliary tools such as screwdrivers. Alternatively, wing nuts can be used, allowing the fingers to press against the two wings of the wing structure and turn the nut to make the screw turn.

[0003] Because of the small size of the screws themselves, the aforementioned hand-tightening screws with knurled and wing nuts can only provide enough space for one hand to apply force when tightening. It is difficult to ensure that the connection between the screw and the mounting position is tight enough after tightening with one hand. Even if it can be tightened by repeated tightening, it requires a lot of force from the fingers, and the pressure generated can easily injure the fingers. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a hand-tightening screw to solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a hand-tightening screw, which includes a screw rod, a nut, and a hand-tightening lever. The nut is connected to the screw rod, and a connecting hole is formed on the side circumferential surface of the nut. The connecting hole extends radially along the end face of the nut, penetrating both sides of the nut. The inner wall of the connecting hole has internal threads next to the two side openings. The nut also has multiple finger grooves arranged circumferentially on its side circumferential surface, forming a concave-convex area around the nut below the connecting hole. The hand-tightening lever has external threads that mate with the internal threads of the connecting hole. There are two hand-tightening levers, and the ends of the two levers are inserted into the connecting hole from the two side openings and fixed. The tail ends of the hand-tightening levers are bent to form a ring for fingers to insert.

[0007] Preferably, a slot is formed on the end face of the nut, the slot coincides with a diameter on the end face of the nut, the extension direction of the slot is perpendicular to the extension direction of the connecting hole, and the head end of the hand-tightening rod is provided with an insert that fits into the slot, so that the insert can be embedded in the slot.

[0008] Preferably, the hand-tightening screw further includes an end face vertical piece, which is embedded in the slotted screw and extends upwards from the end face of the nut.

[0009] Preferably, the end face vertical piece comprises two mutually perpendicular sheet-like structures.

[0010] Preferably, the external thread on the hand-tightening rod is located between the insert and the ring buckle.

[0011] Preferably, the end face of the nut is further provided with a secondary screw groove that extends radially and is parallel to the connecting hole. The secondary screw groove is perpendicular to the straight screw groove, and the straight screw groove and the secondary screw groove are combined to form a cross-shaped screw groove.

[0012] The main technical effects achieved by this utility model are as follows:

[0013] Based on the aforementioned hand-tightening screw, a connecting hole is provided on the side circumference of the nut. The two openings of the connecting hole are respectively connected to the hand-tightening rods by threads, allowing the operator to use both hands to turn the screw by turning the two hand-tightening rods separately. Since the two hand-tightening rods are opposite to each other and far apart, they provide sufficient space for the hands to move and form a lever-like effect, which is more labor-saving and distributes the pressure on the hands. It is less likely to injure the fingers when tightening the screw. The hand-tightening rods have arc-shaped rings for the fingers to insert, which helps to increase the force-bearing area of ​​the fingers. In addition, the operator can place their fingers on any finger groove provided on the side circumference of the nut, and cooperate with the hand-tightening rods that are on different height planes and staggered with each other, making the operator's tightening method and force angle more flexible and adaptable to different installation scenarios.

[0014] The nut end face has a slotted groove, and the end of the hand-tightening rod has a piece that fits into the slotted groove, so that the piece can be inserted into the slotted groove. This allows the ring buckle to form a lever effect further away from the center of the nut end face, making it more labor-saving. The hand-tightening rod can also be inserted vertically downward into the slotted groove to adapt to narrow installation environments. The slotted groove can be used to insert a regular flathead screwdriver for tightening.

[0015] With the end face vertical plate set, the operator can turn the end face vertical plate with one hand and turn the hand-tightening rod or finger groove with the other hand, so that the screw can be tightened by applying force on the end face and side circumference of the nut respectively. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the hand-tightening screw provided in this embodiment of the utility model;

[0017] Figure 2 This is a structural exploded view of the hand-tightening screw;

[0018] Figure 3 A schematic diagram showing the state in which the insert of the hand-tightening screw is embedded in the slot;

[0019] Figure 4 This is a side view of the hand-tightening screw.

[0020] The reference numerals in the above figures are as follows:

[0021] Screw 1;

[0022] Nut 2, side peripheral surface 2a, nut end face 2b, connecting hole 201, finger groove 202, slotted groove 203, secondary groove 204;

[0023] Hand-tightening rod 3, ring buckle 31, insert 32;

[0024] End face vertical piece 4. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0026] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related are omitted.

[0027] Reference Figure 1 and Figure 2 As shown, this utility model embodiment provides a hand-tightening screw, which includes a screw rod 1, a nut 2, and a hand-tightening lever 3.

[0028] The nut 2 is connected to the screw 1. A connecting hole 201 is provided on the side peripheral surface 2a of the nut 2. The connecting hole 201 extends radially along the end face 2b of the nut and passes through the opposite sides of the nut 2. The inner wall of the connecting hole 201 is provided with internal threads next to the openings on both sides. The nut 2 is also provided with a plurality of finger grooves 202 in the circumferential direction of its side peripheral surface 2a. The finger grooves 202 form a concave and convex area around the nut 2 below the connecting hole 201.

[0029] The hand-tightening rod 3 has an external thread that mates with the internal thread of the connecting hole 201. There are two hand-tightening rods 3. The heads of the two hand-tightening rods 3 are inserted into the connecting hole 201 from the two side openings of the connecting hole 201 and fixed. The tail end of the hand-tightening rod 3 is bent to form a ring buckle 31 for fingers to pass through.

[0030] Using the above-mentioned hand-tightening screw, the operator can use both hands to turn the two opposing hand-tightening rods 3 to apply force in the same direction of rotation. The part of the hand-tightening rod 3 inside the connecting hole 201 exerts force on the inner wall of the connecting hole 201, thereby driving the screw 1 and the nut 2 to rotate. Since the annular buckles 31 of the two hand-tightening rods 3 are opposite to each other and far apart, they do not interfere with the action of the hands and form a lever-like effect, which is more labor-saving. The force exerted by both hands at the same time distributes the pressure on each hand, making it less likely to cause finger injury. In addition, the annular buckles 31 contact the fingers with an arc surface, which helps to increase the force-bearing area of ​​a single finger and further reduce the pressure. The operator can also place their fingers on any finger groove 202 on the side circumferential surface 2a of the nut 2 and directly rotate the nut 2 itself. With the help of the hand-tightening rods 3 located at different height planes and offset from each other, the screw can be turned, making the operator's turning method and force angle more flexible and adaptable to different installation scenarios.

[0031] The hand-tightening rod 3 is locked to the connecting hole 201 by the external thread. After the screw is tightened, the hand-tightening rod 3 can be removed to reduce the space occupied by the hand-tightening screw, and the hand-tightening rod 3 can be used to tighten other screws.

[0032] Combination Figure 3 As shown, a slotted groove 203 is formed on the end face 2b of the nut. The slotted groove 203 coincides with a diameter on the end face 2b of the nut. The extension direction of the slotted groove 203 is perpendicular to that of the connecting hole 201. The head end of the hand-tightening rod 3 is provided with an insert 32 that fits into the slotted groove 203, so that the insert 32 can be embedded in the slotted groove 203. By rotating the hand-tightening rod 3, the side of the insert 32 applies force to the inner wall of the slotted groove 203, so that the ring buckle 31 is further away from the center of the end face 2b of the nut. The lever effect makes it more labor-saving. The hand-tightening rod 3 can also be inserted vertically downward into the slot 203. The extension direction of the slot 203 is perpendicular to that of the connecting hole 201, which can adapt to some narrow installation environments. After inserting the hand-tightening rod 3 into the connecting hole 201 and rotating the nut 2 90 degrees, it can be taken out and inserted into the slot 203. The nut 2 can be rotated again at the previous position of the hand-tightening rod 3, providing more position options for the operator. The slot 203 can also be used for the insertion of a regular flathead screwdriver.

[0033] like Figure 1 and Figure 2 As shown, the hand-tightening screw also includes an end face vertical piece 4, combined with... Figure 4 As shown, the end face vertical piece 4 is embedded and fixed within the slotted groove 203 and extends upwards vertically from the end face 2b of the nut. Based on the arrangement of the end face vertical piece 4, the screw can be tightened by applying force to both the end face 2b and the side peripheral surface 2a of the nut. Specifically, the end face vertical piece 4 includes two mutually perpendicular plate-like structures to accommodate the tightening action of multiple fingers.

[0034] In this embodiment, the external thread on the hand-tightening rod 3 is located between the insert 32 and the ring buckle 31. This way, the external thread will reach the point where it engages with the internal thread of the connecting hole 201 after the first end of the hand-tightening rod 3 is inserted into the connecting hole 201, ensuring that there is a sufficiently large contact area between the hand-tightening rod 3 and the connecting hole 201.

[0035] The end face 2b of the nut is also provided with a secondary screwing groove 204 that extends radially and is parallel to the connecting hole 201. The secondary screwing groove 204 is perpendicular to the slotted screwing groove 203. The slotted screwing groove 203 and the secondary screwing groove 204 are combined to form a cross-shaped screwing groove, so that the insert 32 and the end face vertical piece 4 can also be inserted into the secondary screwing groove 204 to accommodate the application of force by the fingers at different angles. The end face vertical piece 4 can be removed and the nut 2 can be directly screwed on with a Phillips screwdriver.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A hand screw, characterized in that include: Screw (1); Nut (2), the nut (2) is connected to the screw (1), the nut (2) has a connecting hole (201) on its side circumferential surface (2a), the connecting hole (201) extends radially along the end face (2b) of the nut and penetrates the opposite sides of the nut (2), the inner wall of the connecting hole (201) has internal threads next to the openings on both sides, the nut (2) also has a plurality of finger grooves (202) arranged in the circumferential direction on its side circumferential surface (2a), the finger grooves (202) form a concave and convex area around the nut (2) below the connecting hole (201); A hand-tightening rod (3) is provided with an external thread that matches the internal thread of the connecting hole (201). There are two hand-tightening rods (3). The head ends of the two hand-tightening rods (3) are inserted into the connecting hole (201) from the two side holes of the connecting hole (201) and fixed. The tail end of the hand-tightening rod (3) is bent to form a ring buckle (31) for fingers to pass through.

2. The hand screw according to claim 1, wherein A slotted groove (203) is provided on the end face (2b) of the nut. The slotted groove (203) coincides with a diameter on the end face (2b) of the nut. The extension direction of the slotted groove (203) is perpendicular to that of the connecting hole (201). The first end of the hand-tightening rod (3) is provided with an insert (32) that fits into the slotted groove (203), so that the insert (32) can be embedded in the slotted groove (203).

3. The hand screw according to claim 2, wherein, The hand-tightening screw also includes an end face vertical piece (4), which is embedded in the slotted screw groove (203) and fixed in place, and extends upward and stands upright on the end face (2b) of the nut.

4. The hand screw according to claim 3, wherein, The end face vertical piece (4) includes two sheet-like structures that are perpendicular to each other.

5. The hand screw according to claim 2, wherein, The external thread on the hand-tightening rod (3) is located between the insert (32) and the ring buckle (31).

6. The hand screw according to claim 2, wherein, The end face (2b) of the nut is also provided with a secondary screw groove (204) that extends radially and is parallel to the connecting hole (201). The secondary screw groove (204) is perpendicular to the straight screw groove (203). The straight screw groove (203) and the secondary screw groove (204) together form a cross-shaped screw groove.

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