Patent Description:
The back rack is one of the common carrying tools in daily life. People can carry their belongings through the back rack to improve the convenience of activities. Therefore, the back rack can often be applied to field activities, tourism, mountain climbing, etc..

In general, the back rack includes a strap and/or a waist belt for the user to wear, so that the user can carry the back rack to carry the heavy objects. However, when the user carries a heavy object, the weight of the heavy object is mostly concentrated on the straps of the back rack. Therefore, the shoulders of the user bear most of the weight. If the user carries heavy objects for a long time, it may cause injuries such as hunchback or scoliosis. In addition, the knee joint is one of the important parts to support the upper body of the human body. When the knee joint needs to bear the weight of the upper body of the human body and the weight of the heavy objects, it will cause considerable pressure on the knee joint and it is easy to suffer from degenerative arthritis. Therefore, the current back rack cannot relieve and reduce the physical burden of the user when carrying heavy objects, thereby reducing the practicability and safety. An auxiliary weight supporting device according to the preamble of claim <NUM> is known from <CIT>.

Therefore, the present invention provides an auxiliary weight supporting device to solve the problems of the prior art. In one embodiment of the present invention, the auxiliary weight supporting device is configured for supporting a user to carry an object. The auxiliary weight supporting device includes a back rack, a walking-stick and a connecting rod. The back rack is configured for the user to wear and for carrying the object. The walking-stick is configured for the user to hold to be propped against the ground in accordance with the user's steps to provide a supporting force. The walking-stick includes a gripping part, a main body and a contacting end. The gripping part and the contacting end are disposed on two ends of the main body respectively. The gripping part is configured for the user to hold, and the contacting end is configured to touch the ground when the user is walking. The connecting rod has a first end and a second end opposite to the first end. The first end is connected to the main body of the walking-stick, and the second end is coupled to the back rack. When the user wears the auxiliary weight supporting device and walks, the walking-stick is controlled by the user to be propped against the ground and swings back and forth in accordance with the user's steps, and the connecting rod drives the back rack to rise when the walking-stick swings backwards.

Wherein, the back rack includes a guide tube structure and a fixing component, and the auxiliary weight supporting device further includes a sliding block and an elastic component. The fixing component is configured in the guide tube structure. The sliding block is configured in the guide tube structure to slide in the guide tube structure, and the sliding block is coupled to the second end of the connecting rod. Two ends of the elastic component are connected to the sliding block and the fixing component respectively. When the walking-stick swings backwards, the walking-stick pushes the connecting rod to drive the sliding block to stretch or compress the elastic component, and the elastic component drives the fixing structure to lift the back rack.

In one embodiment, the elastic component is an extension spring, and the sliding block is located above the fixing component. When the walking-stick swings backwards and pushes the connecting rod to drive the sliding block to move, the extension spring is stretched by the sliding block and generates the elastic recovery force to pull and lift the fixing component.

In one embodiment, the elastic component is a compression spring, and the sliding block is located below the fixing component. When the walking-stick swings backwards and pushes the connecting rod to drive the sliding block to move, the compression spring is compressed by the sliding block and generates the elastic recovery force to push and lift the fixing component.

Wherein, the auxiliary weight supporting device further includes a crank component. The crank component includes a crank body and a rotating part, and the rotating part has an axis. The second end of the connecting rod is pivotally coupled to the crank body, and the rotating part is connected to the sliding block. When the walking-stick swings backwards and pushes the connecting rod, the connecting rod drives the crank body to rotate along the axis and drive the sliding block to move.

Furthermore, the rotating part is a bearing. The crank body has an elongated hole, and the second end of the connecting rod is pivoted to the elongated hole.

Wherein, the auxiliary weight supporting device of the present invention further includes two walking-sticks, two connecting rods, two guide tube structures, two fixing components, two sliding blocks and two elastic components configured on left side and right side of the back rack respectively. The sliding blocks comprise a left sliding block and a right sliding block. When the walking-stick on the left side swings backwards, it pushes the connecting rod on the left side to drive the left sliding block to move, and the elastic component on the left side lifts the back rack.

Furthermore, the left sliding block and the right sliding block alternately stretch or compress the elastic components on the left and right sides to continuously lift the back frame when the walking-sticks are controlled by the user to support the ground and swings back and forth in accordance with the user's steps.

Wherein, the auxiliary weight supporting device further includes a rotary limit component configured on the back rack. The rotary limit component is configured to rotate along the swinging direction of the walking-stick, and the rotary limit component includes a hole structure configured to sleeve the connecting rod. Wherein, when the walking-stick is controlled by the user to be propped against the ground and swings back and forth in accordance with the user's steps, the connecting rod moves in the hole structure and drives the rotary limit component to rotate.

Furthermore, the hole structure is a sleeve.

In summary, the auxiliary weight supporting device of the present invention can transmit the weight of the object from the back rack to the ground through the combination of the back rack, connecting rod and the walking-stick in accordance with the user's steps. Furthermore, the auxiliary weight supporting device of the present invention can transmit the weight of the object from the back rack to the ground alternately through the left and right walking-sticks and connecting rods, so as to reduce the burden of the user to carry heavy objects, thereby improving the practicability, comfort and safety. Moreover, the auxiliary weight supporting device of the present invention can also disperse the force other than the vertical direction through the crank component and the rotary limit component, so that the sliding blocks can only move in the vertical direction, thereby improving the practicability and lifting efficiency.

For the sake of the advantages, spirits and features of the present invention can be understood more easily and clearly, the detailed descriptions and discussions will be made later by way of the embodiments and with reference of the diagrams. It is worth noting that these embodiments are merely representative embodiments of the present invention, wherein the specific methods, devices, conditions, materials and the like are not limited to the embodiments of the present invention or corresponding embodiments. Moreover, the devices in the figures are only used to express their corresponding positions and are not drawing according to their actual proportion.

Please refer to <FIG>, <FIG> and <FIG>. <FIG> is a structural schematic diagram illustrating an auxiliary weight supporting device <NUM> according to an embodiment of the present invention. <FIG> is a structural schematic diagram illustrating the auxiliary weight supporting device <NUM> in another perspective of <FIG>. <FIG> is a schematic diagram illustrating a user U wearing the auxiliary weight supporting device <NUM> of <FIG>. As shown from <FIG>, the auxiliary weight supporting device <NUM> of the present invention is configured for supporting the user U to carry an object. In this embodiment, the auxiliary weight supporting device <NUM> includes a back rack <NUM>, a walking-stick <NUM> and a connecting rod <NUM>. The back rack <NUM> is configured for the user U to wear and for carrying the object. The walking-stick <NUM> is configured for the user U to hold to be propped against the ground in accordance with the user's steps. The connecting rod <NUM> is connected to the back rack <NUM> and the walking-stick <NUM> and configured to drive the back rack <NUM> to move according to the swing of the walking-stick <NUM> to upwardly support the object.

In practice, the back rack <NUM> can include a shoulder strap <NUM> and a waist belt <NUM>, so that the user U can wear the shoulder strap <NUM> and the waist belt <NUM> to carry the back rack <NUM>. The back rack <NUM> can fix and carry the object by suspending or bundling manner, but it is not limited thereto. In one embodiment, the back rack <NUM> can further include a detachable carrying base <NUM>. The carrying base <NUM> can be fixed on the back rack <NUM> by suspending manner, and the object can be disposed on the carrying base <NUM>. The back rack <NUM> can carry the object through the carrying base <NUM>.

Furthermore, the back rack <NUM> includes a guide tube structure <NUM> and a fixing structure <NUM>, and the auxiliary weight supporting device <NUM> further includes a sliding block <NUM> and an elastic component <NUM>. The fixing structure <NUM> is disposed in the guide tube structure <NUM>. The sliding block <NUM> is configured in the guide tube structure <NUM> to slide in the guide tube structure <NUM>. Two ends of the elastic component <NUM> are connected to the sliding block <NUM> and the fixing component <NUM> respectively. In practice, the guide tube structure <NUM> can be a pipe configured along the Z-axis direction, and the sliding block <NUM> can be disposed in the pipe and slide upward and downward along the Z-axis direction. The fixing structure <NUM> can be a cylindrical rod, and two ends of the cylindrical rod are fixed on the inner sidewall of the pipe. The fixing structure is not limited to cylindrical shape, and the shape of the fixing structure can be determined as designed. The elastic component <NUM> can be an extension spring and disposed in the pipe. As shown in <FIG>, in this embodiment, the fixing structure <NUM> is disposed on the bottom of the guide tube structure <NUM>, the sliding block <NUM> is disposed above the fixing structure <NUM>, and the elastic component <NUM> is disposed between the sliding block <NUM> and the fixing structure <NUM>. When the sliding block <NUM> moves upward (in +Z direction), the extension spring is stretched by the sliding block <NUM> and generates the elastic recovery force, and then the extension spring pulls and lifts the fixing structure <NUM> according to the elastic recovery force to lift the back rack <NUM>.

In this embodiment, the walking-stick <NUM> includes a main body <NUM>, a gripping part <NUM> and a contacting end <NUM>. The gripping part <NUM> and the contacting end <NUM> are disposed on two ends of the main body <NUM> respectively. The gripping part <NUM> is configured for the user U to hold, and the contacting end <NUM> is configured to touch the ground when the user U is walking. In practice, when the user U walks with the walking-stick <NUM>, the user U can hold the gripping part <NUM> and swing the walking-stick <NUM> forward first to make the contacting end <NUM> to contact the ground in front of the user U. Then, the user U can use the contacting end <NUM> as a support point and apply a backward thrust to generate a supporting force, so that the user U can walk forward. Moreover, when the user U walks forward through the contacting end <NUM> of the walking-stick <NUM> propped against the ground, the contacting end <NUM> of the walking-stick <NUM> will approach the user U and the walking-stick <NUM> will swing backward along the Y-Z plane.

In this embodiment, the connecting rod <NUM> has a first end <NUM> and a second end <NUM> opposite to the first end <NUM>. The first end <NUM> is connected to the main body <NUM> of the walking-stick <NUM>, and the second end <NUM> is coupled to the back rack <NUM>. In practice, the first end <NUM> of the connecting rod <NUM> can be fixed on a fixing position <NUM> of the main body <NUM> of the walking-stick <NUM>, and the second end <NUM> of the connecting rod <NUM> can be connected to the sliding block <NUM> of the back rack <NUM>. When the walking-stick <NUM> is controlled by the user U to swing backwards, the walking-stick <NUM> can drive the second end <NUM> of the connecting rod <NUM> to move. Furthermore, the second end <NUM> of the connecting rod <NUM> can drive the sliding block <NUM> to move to lift the fixing component <NUM> and the back rack <NUM>. It should be noted that the length of the connecting rod can be determined by the user's requirements, and the fixing position of the first end of the connecting rod that fixed on the main body of the walking-stick can also be determined by the user's requirements.

In this embodiment, the auxiliary weight supporting device <NUM> further includes a rotary limit component <NUM> disposed on the back rack <NUM>. The rotary limit component <NUM> can rotate in accordance with the swinging direction of the walking-stick and includes a hole structure <NUM>. The hole structure <NUM> is configured to sleeve the connecting rod <NUM>. In practice, as shown in <FIG>, the rotary limit component <NUM> can be disposed on the side of the bottom position of the back rack <NUM>, but it is not limited thereto. The rotary limit component <NUM> can include a rotary base <NUM>, and the rotary base <NUM> can rotate along the Y-Z plane with the X axis as the center. The hole structure <NUM> can be a sleeve and can be disposed on the outer side of the rotary base <NUM>. That is to say, the rotary base <NUM> is located between the back rack <NUM> and the hole structure <NUM>, and the rotary base <NUM> can drive the hole structure <NUM> to rotate. Furthermore, the central axis of the hole of the hole structure <NUM> is parallel to the plane of rotation of the rotary base <NUM> (that is the Y-Z plane). Therefore, the connecting rod <NUM> disposed on the rotary base <NUM> can move in the hole structure <NUM> and rotate along the swinging direction of the walking-stick <NUM>.

In addition, in this embodiment, the auxiliary weight supporting device <NUM> further includes a crank component <NUM> connected to the connecting rod <NUM> and the sliding block <NUM>. The crank component <NUM> includes a crank body <NUM> and a rotating part <NUM> having an axis <NUM>. The crank body <NUM> is pivotally coupled to the second end <NUM> of the connecting rod <NUM>, and the rotating part <NUM> is connected to the sliding block <NUM>. In practice, the rotating part <NUM> can be a bearing, and the crank body <NUM> has an elongated hole <NUM> located on the end portion relative to the rotating part <NUM>. The second end <NUM> of the connecting rod <NUM> can be pivotally coupled to the elongated hole <NUM> and move in the elongated hole <NUM>. Furthermore, the second end <NUM> of the connecting rod <NUM> can drive the crank body <NUM> to rotate around the axis <NUM> through the elongated hole <NUM>. When the second end <NUM> of the connecting rod <NUM> moves upward (in +Z direction), the second end <NUM> can drive the crank body <NUM> to rotate around the axis <NUM> and make the elongated hole <NUM> located above the rotating part <NUM>. Then, when the second end <NUM> of the connecting rod <NUM> continues to move upward, the crank component <NUM> will drive the sliding block <NUM> to move upward through the rotating part <NUM>, thereby lifting the fixing structure <NUM> and the back rack <NUM>.

Please refer from <FIG>. <FIG> are schematic diagrams illustrating the user U wearing the auxiliary weight supporting device <NUM> and walking according to an embodiment of the present invention. As shown in <FIG>, <FIG> and <FIG>, when the user U is walking, the user U swings the walking-stick <NUM> forward first to make the contacting end <NUM> of the walking-stick <NUM> to contact the ground in front of the user U. At this time, the first end <NUM> of the connecting rod <NUM> moves forward in accordance with the walking-stick <NUM>, the second end <NUM> of the connecting rod <NUM> moves toward the rotary limit component <NUM> and drives the crank body <NUM> to rotate around the axis <NUM> to make the elongated hole <NUM> be located below the rotating part <NUM>.

Then, as shown in <FIG>, <FIG> and <FIG>, when the user U uses the contacting end <NUM> as a support point to apply the backward thrust and walks forward, the walking-stick <NUM> swings backward, and the distance between the walking-stick <NUM> and the user U is getting small. That is to say, the distance between the walking-stick <NUM> and the back rack <NUM> is getting small, and the distance between the first end <NUM> of the connecting rod <NUM> and the back rack <NUM> is getting small. At this time, the first end <NUM> of the connecting rod <NUM> moves toward the rotary limit component <NUM>, and the second end <NUM> of the connecting rod <NUM> moves away from the rotary limit component <NUM>. It means that the second end <NUM> of the connecting rod <NUM> moves toward the +Z direction. Furthermore, the second end <NUM> of the connecting rod <NUM> drives the crank body <NUM> to rotate around the axis <NUM> to make the elongated hole <NUM> be located above the rotating part <NUM>.

Moreover, as shown in <FIG>, <FIG> and <FIG>, when the user U further steps forward to make the distance between the first end <NUM> of the connecting rod <NUM> and the back rack <NUM> to be the shortest, the second end <NUM> of the connecting rod <NUM> continuously drives the crank body <NUM> to move upward. At this time, the crank component <NUM> drives the sliding block <NUM> of the back rack <NUM> to move upward through the rotating part <NUM>, and the sliding block <NUM> stretches the elastic component <NUM> to lift the fixing component <NUM> and the back rack <NUM>. Finally, the part weight of the object disposed on the back rack <NUM> will be transmitted to the ground through the fixing component <NUM>, the elastic component <NUM>, the sliding block <NUM>, the crank component <NUM>, the connecting rod <NUM> and the contacting end <NUM> of the walking-stick <NUM> sequentially. Therefore, the auxiliary weight supporting device of the present invention can transmit the weight of the object from the back rack to the ground through the combination of the back rack, connecting rod and the walking-stick and with the user's steps, so as to reduce the user's burden of carrying heavy objects, thereby improving practicability, comfort and safety.

In practice, when the walking-stick <NUM> is controlled by the user U to swing back in accordance with the user's steps and push the connecting rod <NUM>, the second end <NUM> of the connecting rod <NUM> not only includes a force in the Z-axis direction, but also includes a force in the Y-axis direction in accordance with the swing of the walking-stick <NUM>. At this time, the force in the Y-axis direction of the second end <NUM> can be configured to drive the crank component <NUM> to rotate. Therefore, when the connecting rod <NUM> drives the crank component <NUM> to move and the crank component <NUM> drives the sliding block <NUM> to move, the sliding block <NUM> only moves in the Z-axis direction without moving in the Y-axis direction, so as to reduce the frictional force between the sliding block <NUM> and the guide tube structure <NUM>, thereby increasing practicality and lifting efficiency.

Moreover, since the connecting rod <NUM> is disposed in the hole structure <NUM> of the rotary limit component <NUM> and the first end <NUM> of the connecting rod <NUM> is fixed on the main body <NUM> of the walking-stick <NUM>, the rotary limit component <NUM> can limit the second end <NUM> of the connecting rod <NUM> to only move and rotate on Y-Z plane without moving in the X-axis direction, so that the sliding block <NUM> can only slide in the Z-axis direction. Furthermore, the connecting rod <NUM> further can include a joint component <NUM> disposed between the first end <NUM> and the second end <NUM>. The joint component <NUM> can be a hinged structure configured to drive the first end <NUM> of the connecting rod <NUM> to swing in the X-axis direction. Different users U may have different habits and ways of using the walking-stick <NUM>. Therefore, when the user U uses the walking-stick <NUM> to be propped against the ground and walk, the contacting end of the walking-stick <NUM> may not be located on the Y-Z plane but will move in the X-axis, thereby driving the first end <NUM> of the connecting rod <NUM> to move in the X-axis direction. At this time, the first end <NUM> of the connecting rod <NUM> only can drive the joint component <NUM> to rotate without driving the second end <NUM> of the connecting rod <NUM> to move in the X-axis direction, so that the sliding block <NUM> can only move in Z-axis direction to reduce the frictional force between the sliding block <NUM> and the guide tube structure <NUM>, thereby increasing practicality and lifting efficiency.

Please refer to <FIG> and <FIG>. The auxiliary weight supporting device <NUM> of the present invention further can include two walking-sticks <NUM>, two connecting rods <NUM>, two guide tube structures <NUM>, two fixing components <NUM>, two sliding blocks <NUM> and two elastic components <NUM> disposed on left side and right side of the back rack <NUM> respectively. The sliding blocks <NUM> further can include a left sliding block <NUM> and a right sliding block 113R, and the fixing components <NUM> further can include a left fixing component <NUM> and a right fixing component 1112R. In practice, two hands of the user U can hold the two walking-sticks <NUM> respectively. The elastic component <NUM> on the left side is connected to the left sliding block <NUM> and the left fixing component <NUM>, and the elastic component <NUM> on the right side is connected to the right sliding block 113R and the right fixing component 1112R. When the walking-stick <NUM> on the left side swings backwards, the connecting rod <NUM> on the left side is pushed to drive the left sliding block <NUM> to move upward. Similarly, when the walking-stick <NUM> on the right side swings backwards, the connecting rod <NUM> on the right side is pushed to drive the right sliding block 113R to move upward. Furthermore, when the two walking-sticks <NUM> are controlled by the user U to be alternately propped against the ground and swings back and forth in accordance with the user's steps, the left sliding block <NUM> and the right sliding block 113R alternately stretch the elastic components <NUM> on the left side and right side to alternately lift the left fixing component <NUM> and the right fixing component 1112R, thereby lifting the back rack <NUM> continuously. Therefore, the auxiliary weight supporting device of the present invention can transmit the weight of the object from the back rack to the ground alternately through the left and right walking-sticks and connecting rods, so as to reduce the user's burden of carrying heavy objects, thereby improving the practicability, comfort and safety.

It should be noted that the auxiliary weight supporting device further can include two crank components and rotary limit components, which are respectively connected to the left sliding block and the right sliding block and connecting rods on the left side and the right side. The connections and structures of the walking-sticks, the connecting rods, the crank components, the rotary limit components, the guide tube structures, the fixing components, the sliding blocks and the elastic components on the left side and right side are the same with the connections and structures of the components of the aforementioned embodiment, it will not be described thereto.

The configuration of the sliding block of the back rack not only can be the type of the aforementioned embodiment, it also can be other types. In one embodiment, the fixing component is disposed in the top of the guide tube structure, the sliding block is disposed in the bottom of the guide tube structure, and the elastic component is a compression spring located between the fixing component and the sliding block. When the walking-stick is controlled by the user to swing back in accordance with the user's steps, the second end of the connecting rod drives the crank component to move upward, and the crank component drives the sliding block to move upward. At this time, the compression spring is compressed by the sliding block and generates the elastic recovery force, and then the compression spring pushes and lifts the fixing structure according to the elastic recovery force to lift the back rack. The part weight of the object disposed on the back rack will be transmitted to the ground through the fixing component, the elastic component, the sliding block, the crank component, the connecting rod and the contacting end of the walking-stick sequentially.

In summary, the auxiliary weight supporting device of the present invention can transmit the weight of the object from the back rack to the ground through the combination of the back rack, connecting rod and the walking-stick in accordance with the user's steps. Furthermore, the auxiliary weight supporting device of the present invention can transmit the weight of the object from the back rack to the ground alternately through the left and right walking-sticks and connecting rods, so as to reduce the user's burden of carrying heavy objects, thereby improving the practicability, comfort and safety. Moreover, the auxiliary weight supporting device of the present invention can also disperse the force other than the vertical direction through the crank component and the rotary limit component, so that the sliding blocks can only move in the vertical direction, thereby improving the practicability and lifting efficiency.

With the examples and explanations mentioned above, the features.

Claim 1:
An auxiliary weight supporting device (<NUM>), configured for supporting a user to carry an object, the auxiliary weight supporting device (<NUM>) comprising: a back rack (<NUM>), configured for the user to wear and for carrying the object
characterized by the auxiliary weight supporting device (<NUM>) further comprising:
a walking-stick (<NUM>), configured for the user to hold to be propped against the ground in accordance with the user's steps to provide a supporting force, the walking-stick (<NUM>) comprising a gripping part (<NUM>), a main body (<NUM>) and a contacting end (<NUM>), the gripping part (<NUM>) and the contacting end (<NUM>) being configured on two ends of the main body (<NUM>) respectively, the gripping part (<NUM>) being configured for the user to hold, and the contacting end (<NUM>) being configured to touch the ground when the user is walking; and
a connecting rod (<NUM>), having a first end (<NUM>) and a second end (<NUM>) opposite to the first end (<NUM>), the first end (<NUM>) being connected to the main body (<NUM>) of the walking-stick (<NUM>), and the second end (<NUM>) being coupled to the back rack (<NUM>);
wherein, when the user wears the auxiliary weight supporting device (<NUM>) and walks, the walking-stick (<NUM>) is controlled by the user to be propped against the ground and swings back and forth in accordance with the user's steps; the connecting rod (<NUM>) drives the back rack (<NUM>) to rise when the walking-stick (<NUM>) swings backwards.