Hand puller with detachable handle

A hand puller with a detachable handle includes a body, an axle, and a handle. The axle is passed and mounted onto the body, and a sheath opening is formed at an end of the handle for sheathing an edge of the axle, such that the handle can be turned by using the axle as an axial center, and a guide section is defined and formed at an external periphery of the sheath opening, and the body includes at least one stop portion protruded from a position proximate to the guide section of the handle. When the handle is turned by using the axle as the axial center, the guide section and the stop portion are slidably coupled to restrict a radial movement of the handle to prevent the handle from being separated from the axle along the radial direction.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a hand puller structure, in particular to a hand puller with a detachable handle.

2. Description of the Related Art

R.O.C. Pat. No. M319128 entitled “Detachable rope puller” and R.O.C. Pat. No. M320543 entitled “Detachable rope puller (1)” disclose a rope puller structure with a detachable handle for preventing others to turn the handle to loosen a rope and also preventing others to untie and steal fastened goods easily.

However, the aforementioned detachable rope puller still has the following shortcomings:

1. In the aforementioned rope pullers, the handle includes a notch at a front end of the handle, such that the handle can be sheathed onto an axle of the rope puller through the notch. In addition, a limit element is installed at the handle for sealing the notch of the handle to prevent the handle from being separated from the axle when the handle is installed onto the axle. However, the additionally installed limit element not only causes a higher level of difficulty for assembling the rope puller, but also incurs a higher manufacturing cost of the rope puller.

2. In the aforementioned rope pullers, the limit element and the axle will abut against each other when a user turns the handle, and thus not only affecting the smooth rotation of the handle, but also causing deformations when the limit element is compressed excessively. As a result, the notch of the handle cannot be sealed by the limit element, and the handle may fall out easily.

3. If the aforementioned rope pullers are under no tension (or at a rope release status), the handle is used for propping a brake plate to release the axle, while the handle is being pressed by the brake plate at the same time to produce a deviation along the radial direction, and the smooth operation of the axle at the rope release status will be affected adversely by the deviated compression from the handle.

SUMMARY OF THE INVENTION

Therefore, it is a primary objective of the present invention to provide a hand puller with a detachable handle having the features of a simple structure, a low cost, and a quick detachable handle.

Another objective of the present invention is to provide a hand puller with a detachable handle, such that when the handle is turned, the handle is maintained at the axial center of the rotation to assure a smooth turning of the handle.

A further objective of the present invention is to provide a hand puller with a detachable handle to overcome the difficulty of releasing a rope through a conventional hand puller, whose axle is abutted by the handle if the handle is situated at a rope release status.

To achieve the foregoing objectives, the present invention provides a hand puller with a detachable handle, and the hand puller comprises a body, an axle, and a handle, wherein the axle is passed into the body, and a ratchet wheel is mounted onto both ends of the axle separately, and the body includes a first brake plate embedded and latched to the two ratchet wheels for restricting the ratchet wheel and the axle to rotate in a one-way direction only, and an end of the handle includes a sheath opening sheathed onto a corresponding edge of the axle, and the handle includes a second brake plate embedded and latched to the ratchet wheel for pushing the ratchet wheel in a one-way direction and synchronously driving the axle to coil a rope when the handle is turned in an opposite rotational direction of the first brake plate by using the axle as an axial center. The invention has the following characteristics:

The handle defines and forms a guide section at an external periphery of the sheath opening, and the body includes at least one stop portion protruded from a position adjacent to the handle guide section, such that the guide section of the handle and the stop portion are slidably coupled with each other when the handle is turned by using the axle as the axial center, so as to limit a radial movement of the handle and prevent the handle from being separated from the axle along the radial direction.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference toFIGS. 1 and 2for a hand puller with a detachable handle in accordance with a first preferred embodiment of the present invention, the hand puller comprises a body11, an axle31, two ratchet wheels41and a handle51.

The body11includes two symmetric side plates121protruded from a bottom plate12, a penetrating hole13formed at a front end of the two side plates121of the body11, a bump14, an upper latch portion15and an indentation16formed sequentially at the external periphery of the front end of each side plate121, and two stop portions17are disposed with an interval apart from each other and on an external side of a front end of two side plates121of the body11, outwardly turned and integrally formed by stamping front ends of the two side plates of the body respectively. The body11further comprises a brake base18disposed at a position proximate to a rear end of the side plate121for accommodating a first brake plate21, and a compression spring22installed between the brake base18and the first brake plate21, such that the first brake plate21has a propping force in a direction towards the penetrating hole13of the body11, and a rope rod19is passed through a rear end of the body11.

The axle31is comprised of two semicircular iron pieces and passed through the penetrating bole13of the body11, and when the axle31is rotated in the penetrating hole1, both ends of the axle31are protruded out of the penetrating hole13.

The two ratchet wheels41have a brake hole42each, and the two ratchet wheels41are passed into both ends exposed from the axle31through the brake hole42and rotated synchronously with the axle31. Since both ends of the axle31lave a stop pin43for preventing the two ratchet wheels41from falling outward from the axle31, and the first brake plate21is abutted by the compression spring22to cut into the two ratchet wheels41for limiting the ratchet wheel41and the axle31to rotate in a one-way direction only.

The handle51includes a sheath opening52having an opening facing downward and formed at an end of the handle51, and the sheath opening52of the handle51is provided for sheathing onto both ends of the axle31protruded from the penetrating hole13, and the axle31is used as an axial center for the rotation. In addition, a slide slot53is formed symmetrically and separately on both sides of the handle51for accommodating a second brake plate23, and the second brake plate23is abutted by a torque spring24to have a propping force in a direction towards the sheath opening52of the handle51, such that the second brake plate23can be embedded and latched onto the two corresponding ratchet wheels41along the slide slot53. When the handle51is turned in an opposite rotational direction of the first brake plate21by using the axle31as an axial center, the handle51can push the ratchet wheel41in a one-way direction and synchronously drive the axle31to coil a rope. The handle51defines and forms an arc shaped guide section54at an external periphery of the sheath opening52. When the handle51is sheathed onto the axle31, the guide section54of the handle51and the stop portion17of the body11are disposed adjacent to each other, such that if the handle51is turned to a position proximate to the bump14of the body11, the guide section54of the handle51will be no longer stopped by the stop portion17of the body11anymore, and separated upward from the axle31, and if the handle51uses the axle31as an axial center and the second brake plate23to push the ratchet wheel41in a one-way direction, the guide section54of the handle51and the stop portion17are slidably coupled with each other to limit a radial movement when the handle51is turned.

With reference toFIGS. 3 and 4for a practical application of the present invention, if the handle51is sheathed onto the axle31, a user needs to turn the handle51back and forth, and the second brake plate23of the handle51drives the two ratchet wheels41to rotate in a one-way direction, and the axle31is rotated at the same time to perform a movement of coiling a rope. When the handle51is turned back and forth, the guide section54of the handle51and the stop portion17of the body11are slidably coupled to make sure that the handle51will not be separated from the axle31along the radial direction when the handle51is turned.

InFIG. 2, if the user turns the handle51to a position of the bump14of the body11, and the second brake plate23is embedded and latched to the bottom of the bump14of the body11, the handle51can be embedded and latched to the bottom of the bump14and situated at a locked status through the second brake plate23. When the user overcomes the resilience of the torque spring24and pulls the second brake plate23away from the blocking of the bump14, the guide section54of the handle51will not be stopped by the stop portion17of the body11, and thus the handle51can be separated upward easily from the axle31through the sheath opening52, such that the user can remove the handle51.

With reference toFIG. 5, when the user turns the handle51to a position of the indentation16of the body11and the second brake plate23is separated from the ratchet wheel41and embedded and latched into the indentation16of the body11, the first brake plate21of the body11will be abutted by a front end of the guide section54of the handle51and separated from the ratchet wheel41, so as to release the axle31to a rope release status. Since a radial stopping action provided by the stop portion17of the body11is exerted onto the guide section54of the handle51, therefore the axial center of the turning handle51and the axial center of the axle31are coaxial, and the handle51will not be propped and deviated by the first brake plate21, and thus the invention can prevent the axle31from being deviated by the handle51that affects the smooth operation of the axle31in the rope release status.

With reference toFIG. 6for a second preferred embodiment of the present invention, the difference between the second preferred embodiment and the first preferred embodiment resides on that an upper latch portion15and an indentation16are formed sequentially at the external periphery of each side plate121of the body11, such that when the handle51is turned by using the axle31as an axial center, the guide section54of the handle51and the stop portion17will be slidably coupled with each other for limiting a radial movement of the handle51to prevent the handle51from being separated from the axle31in the radial direction.

With the structure comprising the aforementioned elements, the present invention has the following advantages:

1. The present invention comes with a simple structure, and thus incurs a low manufacturing cost.

2. The present invention comes with a design of the stop portion of the body disposed adjacent to the guide section of the handle, such that when the handle is turned, the handle will not be separated easily from the axle in the radial direction, and when the handle is turned and the guide section of the handle is not stopped by the stop portion of the body, the handle can be separated from the axle easily. Thus the present invention can provide an easy way of installing and removing the handle to and from the body in a simple and quick manner.

3. The present invention comes with a design of the stop portion of the body, such that when the handle is turned, the handle can be maintained at the axial center to assure a smooth turning of the handle.

4. With the design of the stop portion of the body, the present invention can provide a stopping action in a radial direction when the handle puller is at a rope release status, so as to assure that the axial center of the turning handle and the axial center of the axle are coaxial, and the handle will not be deviated to affect the smooth operation of the axle easily, when the hand puller is at a rope release status.