TWM518981U - Electric retractable cane - Google Patents

Description

Electric telescopic stick

This creation involves a cane, especially an electric telescopic crutch that can be stretched or shortened.

The traditional walking stick basically comprises a handle and a stick body. The handle and the stick system are fixedly coupled to each other, and the length of the stick body is fixed and cannot be extended or shortened at any time according to the needs of the user. This length fixed tradition Crutches are difficult to meet the needs of users of different sizes; on the other hand, traditional crutches with fixed lengths are inconvenient to place or carry because they cannot be arbitrarily changed in length or shortened.

In the published invention patent of the Republic of China (publication number: TW201110906A1), "electric telescopic stick" discloses a cane which can be quickly expanded and contracted to assist its movement when standing up or down from a ladder or the like. The motor drives a plurality of thread feed screws to rotate through a crown gear, and the upper ends of the plurality of thread feed screws are rotatably supported in the hollow portion of the fixed stick portion, and the lower portion is engaged with the screw fixed on the upper portion of the movable rod portion. The cap member further utilizes a plurality of thread feeding screws to move the movable rod to realize the telescopic function of the cane; and further, a protrusion protruding in the axial direction is formed on the inner circumference of the fixing rod portion, and is formed on the outer circumference of the movable rod portion The concave strip that is engaged with the ridges can be locked by moving the movable rod portion in the axial direction by engaging the two.

In the aforementioned prior art, the motor drives a plurality of threads through a crown gear. Rotating the screw, although the speed reduction mechanism can change the direction of the rotation axis of the motor from the handle portion to the fixed rod portion, the torque generated can be less than that of the worm gear; on the other hand, the fixed rod and the movable rod are The protrusion and the concave strip which can be engaged with each other, so that the movable rod can stop when the plurality of thread feeding screws rotate, and slide in the upper and lower directions in the hollow portion of the fixing rod, but the said can be engaged with each other Since the ridges and the strips have a considerable length, this causes the movable rod to generate a large frictional resistance between sliding and the fixed stick, thereby increasing the load on the motor.

The other functions and embodiments of the present invention are described below in conjunction with the drawings.

One of the purposes of this creation is to propose an electric telescopic crutch that can be extended or shortened, which can be extended or shortened by the user as needed.

In order to achieve the above object, an embodiment of the present electric telescopic walking stick comprises: a handle, a cane and an inner rod; the inside of the handle is provided with a battery and a driving mechanism, and one end of the outer rod is fixedly connected to the grip The handle, the outer rod and the inner rod are all a tubular member, and the inner rod is disposed in the outer rod in a coaxial relationship and can slide along the axial direction of the outer rod. The driving mechanism comprises at least a motor, a worm and a helical gear. And a screw, the inner diameter surface of the outer rod has a guiding groove extending along the parallel axis direction, and a nut is fixed inside the top end of the inner rod, and the nut has a guiding block protruding outward in the radial direction. The guiding block protrudes to the outer side of the inner rod and can slide along the extending direction of the guiding groove of the outer rod, one end of the screw is coupled with the helical gear, and the screw rotatably extends into the axial direction of the inner rod and the nut in a coaxial relationship When the motor is rotated, the worm and the helical gear can be rotated to generate a deceleration and increase the torque. The helical gear further drives the screw to rotate, and further uses the screw to drive the inner rod to expand and contract along the axial direction of the outer rod. Movable, elongated or shortened to achieve Shui The function of the length of the rod.

In an embodiment of the present electric telescopic crutches, a first switching element is electrically connected to the battery and the motor for controlling the starting and stopping of the motor and the forward and reverse rotation of the motor.

In an embodiment of the present invention, the handle further includes a light-emitting element and a second switch element, the light-emitting element is electrically connected to the battery through the second switch element, and the light-emitting element is controlled to be turned on and off by the second switch element. To provide the lighting function of the flashlight.

In an embodiment of the present electric telescopic walking stick, a gear and a worm are coupled together in a coaxial relationship, and an output gear of the motor is fixed with a driving gear to mesh with the gear, and the motor can be decelerated by driving the driving gear and the gear to drive the worm to rotate. And increase the effect of the torque output.

It can be understood from the above technical content that the electric telescopic walking stick has the following advantages and effects, wherein the motor drives the worm through the driving gear and the gear, and then uses the worm and the helical gear to drive the screw to rotate, which has the effect of decelerating and increasing the torque output; The nut at the top of the inner rod can prevent the inner rod from rotating when the inner rod slides along the axial direction of the outer rod. On the other hand, the nut can be reduced by sliding the guiding block along the extending direction of the guiding groove of the outer rod. Frictional resistance, the guiding groove is arranged on the inner diameter surface of the outer rod, the outer rod does not see any groove in appearance, and there is no protruding portion on the outer surface of the inner rod, which has the effect of beautifying the appearance.

The specific implementation manners and other advantages and effects of the present creation will be described below in conjunction with the drawings.

10‧‧‧Handle

11‧‧‧ battery room

12‧‧‧Battery

13‧‧‧Battery cover

131‧‧‧Flexible buckle

14‧‧‧Lighting elements

15‧‧‧Second switching element

20‧‧‧The staff

21‧‧‧ guiding slot

30‧‧‧ Staff

31‧‧‧ Nuts

311‧‧‧guide block

32‧‧‧foot pads

40‧‧‧Motor

41‧‧‧First switching element

42‧‧‧Drive gear

50‧‧‧First transmission element

51‧‧‧ Gears

52‧‧‧ worm

60‧‧‧Second transmission components

61‧‧‧ helical gear

611‧‧‧ casing

62‧‧‧Connector

70‧‧‧ screw

Fig. 1 is a top plan sectional view showing an embodiment of an electric retractable cane according to the present invention.

Fig. 2 is a partial structural sectional view of the embodiment of Fig. 1 at the position II-II.

Fig. 3 is an enlarged plan view showing a partial structure of the embodiment of Fig. 2.

Fig. 4 is a cross-sectional view showing the structure of Fig. 3 at the position IV-IV.

Fig. 5 is a cross-sectional view showing the structure of another embodiment of the electric retractable cane of the present invention.

Fig. 6A is a schematic view showing the operation of the electric retractable cane of the present invention, showing the shortening of the inner cane.

Fig. 6B is a schematic view showing the operation of the electric telescopic walking stick of the present invention, showing the situation in which the inner rod is elongated.

First, referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of the present electric telescopic walking stick comprises: a handle 10 , an outer rod 20 , an inner rod 30 and a driving mechanism.

The handle 10 is basically a hollow casing. A battery compartment 11 is disposed inside the handle 10 for accommodating the battery 12. An opening of the battery compartment 11 is provided with a battery cover 13, and one end of the battery cover 13 is rotatably pivoted. At the bottom of the handle 10 is used to shield the opening of the battery compartment 11, and the other end of the battery cover 13 has an elastic snap 131 that can hold the edge of the opening of the battery compartment 11 to provide an opening for the battery 12 to enter and exit the battery compartment 11. In another embodiment, the handle 10 further includes a light-emitting element 14 and a second switching element 15 (as shown in FIG. 5), and the light-emitting element 14 is electrically connected to the battery 12 of the battery chamber 11 through the second switching element 15. The lighting and turning off of the light emitting element 14 is controlled by a second switching element 15, which may be any one of a light emitting diode (LED) and a light bulb, thereby providing an illumination function of the flashlight.

The outer wand 20 is a tubular member, and the inner diameter surface of the outer wand 20 has a guiding groove 21 extending along the parallel axis direction. One end of the outer wand 20 is fixedly connected to the grip 10, and the top end of the outer wand 20 is gripped. The inner portion of the shank 10 is in communication; the guiding groove 21 is provided on the inner diameter surface of the outer wand 20, so that the outer wand 20 does not have any groove in appearance, and has the effect of beautifying the appearance.

The inner rod 30 is a tubular member, and the inner rod 30 is disposed on the outer rod in a coaxial relationship. The inner portion of the inner rod 30 is slidable in the axial direction of the outer rod 20, and a nut 31 is fixed in the inner portion of the top end of the inner rod 30. The nut 31 has a guiding block 311 protruding outward in the radial direction, and the guiding block 311 Protruding to the outer side of the inner wand 30 and sliding along the extending direction of the guiding groove 21 of the outer wand 20 (as shown in FIG. 4), the inner wand 30 can be driven by the nut 31 along the axial direction of the outer wand 30 Sliding, and thus having a retractable function; in one embodiment, the bottom end of the inner wand 30 is secured with a foot pad 32. One embodiment of the foot pad 32 is made of rubber, spring, and other cushioning functional components or materials. Any one of them.

The driving mechanism includes a motor 40 disposed in the handle 10, a battery 12 and a motor 40 electrically connected to the battery compartment 11 by a first switching element 41 for controlling the operation of the motor 40, a first transmission component 50, and a first The second transmission component 60 and a screw 70; in an embodiment, the first transmission component 50 includes a gear 51 and a worm 52. The gear 51 and the worm 52 are coupled together in a coaxial relationship, and the output shaft of the motor 40 is fixedly disposed. The gear 42 is engageable with the gear 51 of the first transmission component 50, and the first transmission component 50 is rotated by the motor 40. In an embodiment, the second transmission component 60 includes: a helical gear 61 and a connector 62; For example, the axial end of the helical gear 61 has a sleeve 611. The top end of the screw 70 is rotatably inserted through the bottom of the handle 10. The sleeve 611 can be sleeved on the top end of the screw 70, and then the connector 62 is used. The helical gear 61 and the top end of the screw 70 are coupled together. In an embodiment of the third embodiment, the connector 62 is a bolt, and the bolt connects the helical gear 61 and the tip end of the screw 70 in a coaxial relationship. 70 rotatably extends into the inner rod 30 in a coaxial relationship The axial direction is screwed together with the nut 31 of the inner rod 30. When the motor 40 rotates, the first transmission element 50 and the second transmission element 60 can transmit the effect of deceleration and increase the torque, so that the rotational movement of the motor 40 can pass. The first transmission element 50 and the second transmission element 60 are transmitted to the screw 70, and the screw 70 is used to drive the inner rod 30 to perform a telescopic movement along the axial direction of the outer rod 20.

In an embodiment, the action of the motor 40 includes: starting, stopping, and The motor is reversed and reversed. In one embodiment, the motor 40 is a DC motor, and the first switching element 41 is a double-cut switch that can change the direction of the direct current supplied to the DC motor and thereby control the positive of the motor 40. Inverted, as shown in FIGS. 6A and 6B, the user can control the motor 40 to perform forward and reverse rotation through the first switch 41, and the screw 70 can be used to drive the inner rod 30 along the axis of the outer rod 20. Telescopic movement in the direction to achieve elongation or shorten the length of the cane.

Although the present invention has been disclosed above through the above embodiments, it is not intended to limit the creation of the present invention. Anyone skilled in the art can make some changes and refinements without departing from the spirit and scope of the present creation. The scope of patent protection is subject to the terms of the claims attached to this specification.

10‧‧‧Handle

11‧‧‧ battery room

12‧‧‧Battery

13‧‧‧Battery cover

131‧‧‧Flexible buckle

20‧‧‧The staff

21‧‧‧ guiding slot

30‧‧‧ Staff

31‧‧‧ Nuts

311‧‧‧guide block

32‧‧‧foot pads

40‧‧‧Motor

41‧‧‧First switching element

42‧‧‧Drive gear

50‧‧‧First transmission element

51‧‧‧ Gears

52‧‧‧ worm

60‧‧‧Second transmission components

61‧‧‧ helical gear

611‧‧‧ casing

62‧‧‧Connector

70‧‧‧ screw

Claims (6)

An electric telescopic walking stick comprises: a handle, a cane and an inner rod, wherein the inside of the handle is provided with a battery and a driving mechanism, and one end of the outer rod is fixedly connected to the handle, the outer rod and the outer rod The inner rod is a tubular member, and the inner rod is disposed in the outer rod in a coaxial relationship and is slidable along the axial direction of the outer rod. The driving mechanism comprises at least a motor, a worm, a helical gear and a screw having an inner diameter surface of the outer rod having a guiding groove extending in a direction parallel to the axis of the axis, the inner portion of the inner rod of the inner rod is fixed with a nut having a guiding protrusion protruding outward in the radial direction a guiding block protruding to the outer side of the inner wand and slidable along the extending direction of the guiding groove of the outer wand, the output shaft of the motor is coupled to the worm and can drive the worm to rotate, the worm and the worm a helical gear meshing for driving the helical gear, the top end of the screw is coupled to the helical gear in a coaxial relationship, the screw rotatably extending into the axial direction of the inner rod in a coaxial relationship and screwed together with the nut The screw can drive the nut and the inner rod Sliding the axial direction of the outer poles. The electric telescopic walking stick according to claim 1, wherein the handle comprises a first switching element electrically connected to the battery and the motor for controlling start and stop of the motor and forward and reverse rotation of the motor. The electric telescopic walking stick according to claim 1, wherein the grip comprises a light emitting element and a second switching element, the light emitting element is electrically connected to the battery through the second switching element, and the light is controlled by the second switching element The component is lit and turned off. The electric telescopic walking stick according to claim 1, wherein a gear and the worm are coupled together in a coaxial relationship, and the output shaft of the motor is fixed with a driving gear to mesh with the gear of the worm, and the motor transmits the driving gear And the gear drives the worm to rotate. The electric telescopic walking stick according to claim 1, wherein the helical bottom end of the helical gear has a sleeve, the top end of the screw is rotatably inserted through the bottom of the handle, and the sleeve can be sleeved on the screw Top At the end, the helical gear is coupled to the top end of the screw by a bolt. The electric telescopic walking stick according to claim 1, wherein the bottom end of the inner rod is fixed with a foot pad made of any one of rubber and spring.