BELT BUCKLE

The present invention provides a belt buckle, which solves the problem that the existing self-locking belt buckle is easy to be inconvenient to unlock when it is locked over tightly. The belt buckle comprises a main-body; a plate-control body; and a pawl for restricting the position of the belt-body; wherein the rear end of the main-body is set with a belt-body clamping section, the front end of the main-body is rotatedly connected with a rotation-shaft, a vice placing hole is set in the front end of the plate-control body, a groove is set on the outer surface of the front end of the main-body, and a position-restoring spring is set between the rear end of the pawl and the rear end of the bottom of the groove. The present invention can adjust the tightness of the belt by just pressing, the adjustment is convenient and the flexibility is higher.

(A) TECHNICAL FIELD OF THE INVENTION

The present invention relates to a belt buckle.

(B) DESCRIPTION OF THE PRIOR ART

At present, the working principle of the self-locking belt buckle on the market is: when adjusting the tightness of the belt, pressing and holding the belt buckle with the thumb and rotating the handle with the index finger to release the rotating piece (pawl) from the ratchet teeth, then the belt can be freely relaxed or tightened; and when locking the belt tightly, the index finger is released from the handle and the rotary plate is reset under the action of the magnet while the rotary plate abuts against the ratchet teeth.

The existing automatic locking belt buckles have the following disadvantages:

Firstly, the adjusting of the tightness is troublesome and the rotating piece will be buckled tightly with the ratchet teeth when the belt is very tight, therefore the handle is difficult to rotate and requires a lot of effort to unlock it.

Secondly, the structure of the existing belt buckle is complex and the weight is heavier; the more parts, the heavier the weight and easier to damage.

SUMMARY OF THE INVENTION

The present invention provides a belt buckle, which aims to solve the problem that the existing self-locking belt buckle is easy to need more strength to unlock when the belt buckle is locked tightly.

In order to solve the above technical problem, the present invention is implemented by the following technical solutions:

A belt buckle comprises a main-body; a plate-control body; and a pawl for restricting the position of the belt-body; wherein the rear end of the main-body is set with a belt-body clamping section, and the front end of the main-body is rotatedly connected with a rotation-shaft which is set in the left-right direction; wherein a vice placing hole opened in the front-rear direction is set in the front end of the plate-control body, and the plate-control body is fixedly connected to the rotation-shaft; wherein a groove which the pawl is located within is set on the outer surface of the front end of the main-body, and the front end of the pawl is fixed on the rotating shaft; wherein a position-restoring spring is set between the rear end of the pawl and the rear end of the bottom of the groove; wherein a main limiting frame is set on the outer surface of the main-body, and a main placing hole of the belt-body is opened in the front-rear direction and is surrounded and formed between the main limiting frame and the outer surface of the main body.

Furthermore, the clamping section is formed by an engaging slot that is disposed on the rear end surface of the main-body and matched with the belt-body and a fixing screw for fixing the belt body within the engaging slot.

Furthermore, the main-body is set with a first through hole penetrating through the groove and the front end of the pawl is set with a second through hole, and both the left and right sides of the plate-control body are set with a connection hole; wherein the rotation-shaft is penetrated through the first through hole, the second through hole; wherein the second through hole and the connection hole are both fixedly connected with the rotation-shaft

Furthermore, the vice placing hole of the belt-body is surrounded and formed by the front edge of the board control body and a vice limiting frame set on the inner surface of the plate-control body.

Furthermore, the plate-control body is a U-shaped frame with an open back end.

Furthermore, the pawl comprises a fixing portion and a bending portion; wherein the fixing portion is fixedly connected with the rotation-shaft, and the bending portion is disposed at the rear end of the fixing portion and is bent outward.

The pawl structure is used in conjunction with a belt-body having ratcheted teeth.

Furthermore, the pawl is a triangular or square sheet structure.

Compared with the prior art, the advantages of the present invention are:1. In the present invention, the pawl can be driven out of the belt-body by gently pressing the connection place between the main-body and the plate-control body, so that the tightness of the belt can be adjusted. Even if the belt is very tight, it can be easily opened.2. The present invention omits the panel, magnet and the like on the belt buckle; the structure is simplified, so that the whole becomes lighter convenient.3. Under the action of the position-restoring spring, the plate-control body and the pawl are restored position, and the pawl abuts on the belt-body, thereby limiting the position of the belt-body and realizing the function of automatic locking tightly.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The foregoing and other aspects, features, and utilities of the present invention will be best understood from the following detailed description of the preferred embodiments when read in conjunction with the accompanying drawings.

Referring toFIG. 1toFIG. 4, a belt buckle comprises a main-body10, a plate-control body20, and a pawl13for restricting the position of the belt-body30.

The rear end of the main-body10is set with a belt-body clamping section, and the front end of the main-body10is rotatedly connected with a rotation-shaft15which is set in the left-right direction. The plate-control body20is fixedly connected to the rotation-shaft15. The outer surface of the front end of the main-body10is set with a groove11which the pawl13is located within, and the front end of the pawl13is fixed on the rotating shaft15. A position-restoring spring12is set between the rear end of the pawl13and the rear end of the bottom of the groove11, which one position-restoring spring12is preferably used in this embodiment, but other number of the position-restoring spring12may also be selected according to the specific situation.

Referring toFIG. 1andFIG. 2, a main limiting frame16is set on the outer surface of the main-body10, and a main placing hole25of the belt-body30is opened in the front-rear direction and is surrounded and formed between the main limiting frame16and the outer surface of the main body10.

Referring toFIG. 3, a vice placing hole22opened in the front-rear direction is set in the front end of the plate-control body20, which the plate-control body20is a U-shaped frame with an open back end.

The vice placing hole22of the belt-body30is surrounded and formed by the front edge of the board control body20and a vice limiting frame24set on the inner surface of the plate-control body20.

Referring toFIG. 4, the pawl13comprises a fixing portion131and a bending portion132, which the fixing portion131is fixedly connected with the rotation-shaft15. The bending portion132is disposed at the rear end of the fixing portion131and is bent outward.

In order to weaken the damage of the pawl13to the belt body30, an adhesive layer is set on the outer side of the pawl13in this embodiment.

In this embodiment, the rotation-shaft15may be a single shaft or two shafts combined to form.

The main-body10is set with a first through hole26penetrating through the groove11, and the front end of the pawl13is set with a second through hole133. Both the left and right sides of the plate-control body20are set with a connection hole21, which the rotation-shaft15is penetrated through the first through hole26, the second through hole133, and the connection hole21. The rotation-shaft15is pivotally connected within the first through hole26which is a round hole; wherein the second through hole133and the connection hole21are both fixedly connected with the rotation-shaft15.

Referring toFIG. 2andFIG. 5, the cross-section of the rotation-shaft15is an arcuate shape, and the radius of the first through hole26is the same as the radius of the rotation-shaft15. When the rotation-shaft15rotates, the main-body10will not follow to rotate.

Referring toFIG. 4andFIG. 6, the front end of the pawl13is set with a second through hole133whose cross section is the same as which of the rotation-shaft15.

Referring toFIG. 3andFIG. 6, the rear end of the plate-control body200is set with a connecting hole21whose cross section is the same as which of the rotation-shaft15.

When the plate-control body20rotates, the pawl13and the rotation-shaft15will rotate together. The main function of the above structure is that the shaft15and the pawl13will rotate together with the plate-control body20when the rotation-shaft15and the plate-control body20are relatively rotated.

The cross-section of therotation-shaft15in this embodiment is not limited to the arcuate shape, which may also be a non-circular shape such as a regular polygon as long as the rotation-shaft15and the pawl13can be rotated together with the plate-control body20and the main-body10does not follow the rotation-shaft15to rotate.

In this embodiment, the clamping section is formed by an engaging slot that is disposed on the rear end surface of the main-body10and matched with the belt-body30and a fixing screw for fixing the belt body30within the engaging slot. Alternatively, the clamping section can be formed by other existing structure for clamping belt such as an engaging component.

The following will further describe the present embodiment in combination with the working principle of this embodiment:

Referring toFIG. 7, when the belt is tightened, the free end of the belt belt-body30(the other end of the belt-body30is a fixed end fixed in the clamping section of the main-body10) is pass through the vice placing hole22and the main limiting hole25of the belt-body30in sequence. When the belt-body30passes through the main limiting hole25of the belt-body30, the belt body30presses the pawl13until the belt-body30is adjusted to an appropriate position; then the tightening is stopped, and the pawl13is fastened to the ratchet teeth31.

After the tightening is completed, a normal wearing state as shown inFIG. 8is formed. At this time, the belt can only be tightened in one direction and cannot be loosened in the reverse direction under the action of the ratchet teeth31and the pawl13of the belt-body30.

Referring toFIG. 9, when the belt needs to be loosen, using the hand to gently press the connection place between the main-body10and the plate-control body20inwardly; then the plate-control body20will sequentially drive the rotation-shaft15and the pawl13, and the bending portion132of the pawl13will move toward the bottom of the groove11. At the same time, the position-restoring spring12is compressed by the pawl13, and the bending portion132of the pawl13is disengaged from the ratchet teeth31of the belt-body30, so that the belt-body30can be smoothly withdrawn from the belt buckle as shown inFIG. 10.

FIG. 11shows a belt comprising the belt buckle of the first embodiment as described above. The belt comprises a belt-body30on which the ratchet teeth31matched to the pawl13is set.