CN105382748B - A kind of box spanner - Google Patents

Abstract

The invention discloses a socket wrench, which belongs to the field of hardware tools and includes a socket head and a socket rod. The first central hole communicates with the second central hole to form a through-hole structure, the inner cavity of the second central hole is matched with the lock nut, the inner cavity of the first central hole is matched with the inner hexagon of the adjusting headless screw The wrench cooperates, and the socket head ferrule of the present invention is in the process of tightening it on the lock nut, and at the same time, the headless screw locked by the lock nut can be adjusted without removing the socket head to simplify the operation process , in the process of tightening the lock nut, the adjusted headless screw can be fixed at the same time, so that it will not rotate with the lock nut and affect the adjusted accuracy of the headless screw, so that the headless screw can be adjusted The adjustment work can be completed at one time, which improves work efficiency.

Description

a socket wrench

technical field

The invention relates to the field of hardware tools, in particular to a socket wrench used for adjusting headless screws with locking nuts.

Background technique

A headless screw is a screw that can be buried in the object to be screwed without expanding the protruding head. In order to facilitate the screwing of the headless screw on the object to be screwed, an inner hexagonal concave is usually provided at the center of one end surface. At the same time, for the convenience of locking the headless screw on the screwed object, a lock nut is screwed outside the headless screw, and then the headless screw is locked by the tension between the lock nut and the screwed object.

The traction machine used in the mechanical warehouse of the power transmission and transformation company needs to adjust the pressure of the operating handle to the specified pressure during maintenance. The headless screw and lock nut used to adjust the pressure are all set in the groove. , when adjusting the pressure of the operating handle, first loosen the lock nut of the headless screw with a sleeve tool, then adjust the pressure with the hexagonal tool to adjust the headless screw, and adjust the pressure of the operating handle to the specified pressure before Tighten the lock nut with a socket tool to lock the headless screw; but in the actual adjustment, due to the stress on the headless screw when the lock nut is tightened with a socket tool, the headless screw is easy to follow the rotation of the lock nut and make the headless screw The adjusted pressure changes, which is very inconvenient during maintenance, time-consuming and laborious, and is not conducive to improving maintenance efficiency.

Contents of the invention

The technical problem to be solved by the present invention is to provide a box wrench that ensures that the locked headless screw does not rotate with the lock nut when the lock nut is tightened.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A socket wrench, comprising a socket head and a socket rod, characterized in that: a first center hole and a second center hole are respectively concentrically arranged on the upper and lower end surfaces of the socket head, and the first center hole and the second center hole The holes are connected to form a through-hole structure, the inner cavity of the second central hole is matched with the locking nut, and the inner cavity of the first central hole is matched with the inner hexagonal wrench for adjusting the headless screw.

The further improvement of the technical solution of the present invention is that: the first central hole includes a ball bearing clamped in the inner cavity of the first central hole and a first inner hexagon set on the inner ring of the ball bearing, the first inner hexagon The inner cavity is matched with the inner hexagonal wrench for adjusting the headless screw, the outer circumference of the first inner hexagon is a cylindrical structure, and the ball bearing is surrounded by two circles on the outer circumference of the first inner hexagon, and respectively set at the two ends of the first inner hexagon.

The further improvement of the technical solution of the present invention lies in that: the second central hole includes a second inner hexagonal body that fits in the inner cavity of the second central hole, and the inner hole of the second inner hexagonal body cooperates with a locking nut.

The further improvement of the technical solution of the present invention is that: the sleeve rod is perpendicular to the center line of the sleeve head and is clamped outside the sleeve head, and the rotating body that matches the sleeve rod and the sleeve head is equipped with a control dial ratchet structure.

Owing to having adopted above-mentioned technical scheme, the technical progress that the present invention obtains is:

In the process of tightening the sleeve head ferrule on the lock nut, the headless screw locked by the lock nut can be adjusted at the same time, without first removing the sleeve head to simplify the operation process. During the tightening process of the lock nut, the adjusted headless screw can be fixed at the same time, so that it will not follow the rotation of the lock nut and affect the accuracy of the headless screw after adjustment, so that the adjustment of the headless screw can be done once Complete, improve work efficiency.

The first inner hexagon of the hexagonal wrench used to insert and adjust the headless screw on the socket head of the present invention is the same as the hexagonal wrench. The first inner hexagon rotates with the sleeve head through the ball bearing in the first central hole, so that the rotation of the inner hexagonal wrench in the sleeve head is more flexible, and the accuracy of adjusting the headless screw is provided.

Description of drawings

Fig. 1 is a schematic diagram of the main view structure of the present invention;

Fig. 2 is a schematic cross-sectional structure along the A-A line in Fig. 1;

Fig. 3 is a schematic cross-sectional structure diagram along the B-B line in Fig. 1;

Fig. 4 is a schematic cross-sectional structure along the C-C line in Fig. 2;

Fig. 5 is a schematic cross-sectional structure diagram along the D-D line in Fig. 2;

Fig. 6 is a schematic diagram of cooperation between a lock nut and a headless screw;

Among them, 1. Sleeve head, 1-1, first center hole, 1-11, ball bearing, 1-12, first inner hexagon, 1-2, second center hole, 1-21, second inner Hexagon, 2, sleeve rod, 2-1, rotating body, 2-2, control dial, 3, locking nut, 4, headless screw.

Detailed ways

Below in conjunction with embodiment the present invention is described in further detail:

As shown in Fig. 1 and Fig. 2, a socket wrench of the present invention includes a socket head 1 and a socket rod 2, and a first center hole 1-1 is set on the upper end surface of the socket head 1, and the first center hole 1 -1 is used to pass through the hexagonal wrench from the upper end of the socket head 1 to adjust the headless screw 4, the inner cavity of the first central hole 1-1 is matched with the hexagonal wrench for adjusting the hexagonal wrench to set the first central hole 1-1 The inner cavity is circular, and its aperture is larger than the diameter of the circumscribed circle of the hexagonal wrench, so that the hexagonal wrench can rotate freely in the center hole; on the other hand, in order to make the hexagonal wrench in the first center hole 1-1 In order not to cause too much deviation and find the position, the diameter of the first central hole 1-1 is set to be slightly larger than the diameter of the circumscribed circle of the hexagonal wrench, preferably greater than 1-2 mm, and the length of the first central hole is set to 5-2 mm. 10mm, which is used to restrict the hexagonal wrench inserted into the center hole from shaking too much in the center hole.

As shown in Figure 2 and Figure 6, a second central hole 1-2 is provided on the lower end surface of the sleeve head 1, and the inner cavity of the second central hole 1-2 cooperates with the lock nut 3, and the second central hole 1 is provided. The inner cavity of -2 matches the shape of the lock nut 3, so that the sleeve is stuck on the lock nut 3 and controls the rotation of the lock nut 3. The length of the second central hole 1-2 should be greater than the thickness of the lock nut 3 More than 5mm is used to reserve the adjustment space of the headless screw 4.

As shown in Figure 2 and Figure 6, the first central hole 1-1 and the second central hole 1-2 are concentrically arranged and the two central holes are connected to form a through-hole structure, and the concentric arrangement ensures that the second central hole 1-2 is set When on the lock nut 3, the hexagonal wrench for adjusting the headless screw 4 can be accurately matched with the headless screw 4 and adjusted after passing through the first central hole 1-1.

As shown in Fig. 2, Fig. 4 and Fig. 5, the technical solution of the present invention further improves the first central hole 1-1 to include a ball bearing 1-11 clamped in the inner cavity of the first central hole 1-1, and 1-11 The first inner hexagon 1-12 of the inner ring, the outer circumference of the first inner hexagon 1-12 is a cylindrical structure, and the first inner hexagon 1-12 is surrounded by the ball bearing 1-11. The inner cavity of the first central hole 1-1 is more flexible to rotate; the inner cavity of the first inner hexagon 1-12 cooperates with the inner hexagonal wrench for adjusting the headless screw 4, so that the inner hexagonal ferrule fits in the first inner hexagonal body 1- 12 and can slide in parallel on the center line of the first inner hexagon 1-12, so that after the inner hexagonal wrench for adjusting the headless screw 4 is inserted into the inner cavity of the first inner hexagon 1-12, it passes through the first inner hexagon 1-12. The inner cavity of the inner hexagon 1-12 controls the inner hexagon wrench on the center line of the first inner hexagon 1-12; the ball bearing 1-11 surrounds the outer circumference of the first inner hexagon 1-12 with two circles, respectively It is arranged at both ends of the first inner hexagon 1-12, and is used to keep the center line of the first inner hexagon 1-12 and the first center while the ball bearing 1-11 drives the first inner hexagon 1-12 to rotate. The centerlines of holes 1-1 coincide.

As shown in Fig. 2, Fig. 5 and Fig. 6, the technical solution of the present invention further improves the second central hole 1-2 to include a second inner hexagon 1-21 set in the inner cavity of the second central hole 1-2. The inner hole of the second inner hexagon 1-21 cooperates with the lock nut 3, and the second inner hexagon 1-21 is set on the lock nut 3, and the lock nut 3 is controlled to rotate; the sleeve is stuck on the second inner hexagon. There are multiple sets of second inner hexagons 1-21 in the inner cavity of the central hole 1-2, and the diameter of the inner cavity of the second central hole 1-2 is reduced to meet the lock nuts 3 of different specifications.

As shown in Figure 3, the technical solution of the present invention further improves that the sleeve rod 2 is perpendicular to the center line of the sleeve head 1 and is clamped on the outside of the sleeve head 1. 2-1 is a ratchet structure with a control dial 2-2. The rotating body 2-1 of the ratchet structure enables the socket wrench to be operated conveniently without taking out the screw to be screwed. The function of the control dial 2-2 can be controlled The anti-reverse direction of the ratchet mechanism makes the socket wrench very convenient regardless of its tightness; the socket rod 2 sets are stuck outside the socket head 1 without affecting the first central hole 1-1 at the upper end of the socket head 1 .

How it works or how to use it:

As shown in Figure 6, in practice, the lock nut 3 and the headless screw 4 are arranged in the groove of the workpiece, the lock nut 3 is threaded outside the headless screw 4, and the extrusion force generated by tightening the lock nut 3 will Headless screw 4 is locked.

As shown in FIG. 1 , in the present invention, a sleeve head 1 with a certain length is clamped on a lock nut 3 to tighten the lock nut 3 , and force the sleeve head 1 through a sleeve rod 2 .

As shown in Figures 1 to 6, when adjusting the headless screw 4 during work, first insert the second inner hexagon 1-21 on the second center hole 1-2 of the sleeve head 1 into the lock nut 3 On, the lock nut 3 is loosened by the force of the socket rod 2; the hexagonal wrench for adjusting the headless screw 4 is inserted into the first center hole 1-1 of the socket head 1 to reach the headless screw 4, by rotating the inner hexagonal wrench The hexagonal wrench adjusts the headless screw 4; when the headless screw 4 is adjusted to a suitable position, turn the control dial 2-2 on the sleeve rod 2 to change the anti-reverse direction of the rotating body 2-1; use one hand Control the hexagonal wrench reaching the headless screw 4 so that it does not rotate, and tighten the lock nut 3 at the same time; at this time, the adjustment of the headless screw 4 is completed, and the whole process does not need to take the socket wrench off the adjusted screw. It is very convenient; at the same time, in the process of adjusting the headless screw 4, the headless screw 4 can be controlled so that it will not rotate with the lock nut 3 and affect the adjustment accuracy, and the adjustment of the headless screw 4 can be completed at one time to improve work efficiency.

Claims (1)

1. A socket wrench, comprising a socket head (1) and a socket rod (2), characterized in that first central holes (1-1) are concentrically arranged on the upper and lower end surfaces of the socket head (1) and the second central hole (1-2), the first central hole (1-1) communicates with the second central hole (1-2) to form a through-hole structure, the second central hole (1-2) The inner cavity of the first central hole (1-1) is matched with the inner cavity of the lock nut (3), and the inner cavity of the first central hole (1-1) is matched with the inner hexagonal wrench for adjusting the headless screw (4); The first center hole (1-1) includes a ball bearing (1-11) clamped in the inner cavity of the first center hole (1-1) and a first inner ring fitted on the inner ring of the ball bearing (1-11). Hexagonal (1-12), the inner cavity of the first inner hexagonal body (1-12) matches the inner hexagonal wrench for adjusting the headless screw (4), the first inner hexagonal body (1-12) The outer circumference is a cylindrical structure, and the ball bearings (1-11) are surrounded by two circles on the outer circumference of the first inner hexagon (1-12), and are respectively arranged on the first inner hexagon (1-12) ) at both ends; The second central hole (1-2) includes a second inner hexagon (1-21) sleeved in the inner cavity of the second central hole (1-2), and the second inner hexagon (1-21) The inner hole of the sleeve head (2) is matched with the lock nut (3); the sleeve rod (2) is perpendicular to the center line of the sleeve head (1) and clamped outside the sleeve head (1), and the sleeve rod (2) ) The rotating body (2-1) matched with the sleeve head (1) is a ratchet structure with a control dial (2-2).