CN207125422U - Extension type mountain climbing crutch - Google Patents

Abstract

The utility model discloses a retractable mountain climbing crutch, which belongs to the technical field of crutches. The retractable mountaineering crutch includes a handle, a telescopic device and a contact foot, wherein: the telescopic device includes a first section rod sleeve, a second section rod sleeve and a locking device, and the locking device includes a base, so The base is fixed with a central rod, and the central rod is covered with a conical moving cylinder, a spring and an expandable sleeve; the other end of the central rod is provided with a cylindrical boss, and the spring is arranged on the cylindrical Between the boss and the conical moving cylinder, the expandable sleeve is arranged between the base and the conical moving cylinder; the central rod is provided with external threads, and the inner wall of the conical moving cylinder is provided with The outer surface of the conical moving cylinder is provided with several guide ribs, and the expandable sleeve is provided with several guide grooves. The utility model has the advantages of simple structure, high safety and stability, and the length can be adjusted conveniently so as to be suitable for different groups of people.

Description

retractable hiking sticks

technical field

The utility model relates to the technical field of crutches, in particular to a retractable climbing crutch.

Background technique

Climbing sticks, as the name suggests, refer to auxiliary equipment suitable for mountaineering. Mountaineering crutches can bring many benefits to outdoor mountaineering and crossing activities, such as improving the stability of walking, reducing the burden on the legs, and improving the safety of climbers. According to research, using hiking sticks while walking can reduce the force applied to muscle joints such as legs and knees by at least 22%, making the legs feel more comfortable! Using two climbing sticks at the same time can provide better balance.

Mountaineering crutches in the prior art are mostly a wooden stick, a metal stick or a bamboo stick in a T shape, and the length cannot be adjusted, and what people need is a crutch with a length suitable for themselves, so a crutch with a fixed length cannot adapt to more broad crowd. There are also some telescopic crutches on the market, but they are not fast and easy enough to adjust the length, and the safety and stability are relatively poor. Therefore, it is necessary to provide a retractable climbing crutch that can be easily adjusted in length and is safe and convenient to use, so as to adapt to a wider range of people.

Utility model content

The utility model provides a retractable climbing crutch, which is simple in structure, high in safety and stability, and can be conveniently adjusted in length so as to be suitable for different groups of people.

In order to solve the problems of the technologies described above, the utility model provides technical solutions as follows:

A retractable mountaineering crutch, comprising a handle fixedly connected sequentially, a retractable device and contact feet in contact with the ground, wherein:

The telescoping device includes a first joint rod sleeve and a second joint rod sleeve which are sequentially socketed, and a locking device is provided at the connection between the second joint rod sleeve and the first joint rod sleeve, The locking device includes a base fixedly connected to the second rod sleeve, a central rod is fixed on the base, and a conical moving cylinder, a spring and an expandable sleeve are sleeved on the central rod;

One end of the central rod is fixedly connected to the base, the other end of the central rod is provided with a cylindrical boss, the spring is arranged between the cylindrical boss and the conical moving cylinder, and the expandable sleeve arranged between the base and the conical moving cylinder;

The central rod is provided with an external thread, the inner wall of the conical moving cylinder is provided with an internal thread matching the external thread, and the outer surface of the conical moving cylinder is uniformly provided with several guides along the longitudinal direction. Ribs, the expandable sleeve is uniformly provided with several guide grooves for inserting the guide ribs along the longitudinal direction;

The inner wall diameter of the first joint rod sleeve is larger than the outer surface diameter of the second joint rod sleeve, the maximum diameter of the outer surface of the tapered moving cylinder is larger than the inner wall diameter of the expandable sleeve, and the cone The maximum diameter of the outer surface of the shaped moving cylinder and the outer surface diameter of the expandable sleeve are both smaller than the inner wall diameter of the first joint rod sleeve.

Further, the first rod sleeve is provided with several positioning pins for positioning the expandable sleeve, and the expandable sleeve is provided with pin holes matching the positioning pins.

Further, the inner wall of the first joint rod sleeve and the outer surface of the expandable sleeve are provided with matching circumferential tooth surfaces, and the teeth on the circumferential tooth surfaces of the first joint rod sleeve The diameter of the tip circle is greater than the diameter of the tip circle of the circumferential tooth surface of the expandable sleeve.

Further, the expandable sleeve is provided with four guide grooves, one of which runs through the expandable sleeve longitudinally.

Further, the outer surface of the expandable sleeve is provided with an anti-skid layer.

Further, the telescoping device also includes a third rod sleeve inserted into the second rod sleeve, and the connection between the third rod sleeve and the second rod sleeve is also A locking device with the same structure is provided.

Further, a first joint sleeve and a second joint sleeve are arranged between the first joint sleeve and the second joint sleeve and between the second joint sleeve and the third joint sleeve respectively. , the first joint sleeve and the second joint sleeve are provided with stepped holes, wherein:

The small diameter of the stepped hole of the first joint sleeve is the same as the outer surface diameter of the second joint rod sleeve, and the small diameter of the stepped hole of the first joint sleeve is smaller than the outer surface diameter of the expandable sleeve;

The small diameter of the stepped hole of the second joint sleeve is the same as the outer surface diameter of the third rod sleeve, and the small diameter of the stepped hole of the second joint sleeve is smaller than the outer surface diameter of the expandable sleeve.

Further, the first rod sleeve, the second rod sleeve and the third rod sleeve are all made of carbon fiber.

Further, the contact pin includes a plug and an alloy head fixedly connected with the plug, the plug and the alloy head are covered with a rubber expandable sleeve pad, and the lower end of the rubber expandable sleeve pad is provided with an anti-skid pattern.

Further, the handle is a head grip handle made of rubber material, and a sling is arranged on the head grip handle.

The utility model has the following beneficial effects:

The retractable mountaineering crutch of the utility model includes a handle fixedly connected in turn, a telescopic device and a contact foot in contact with the ground, and the telescopic device includes a first rod sleeve, a second rod sleeve and a locking device. The two-section rod sleeve can make the central rod in the locking device rotate, and through the threaded connection between the central rod and the conical movable cylinder, the movement of the conical movable cylinder can be realized. When the second rod sleeve is rotated counterclockwise, the conical moving cylinder will move away from the expandable sleeve along the central rod. Since the conical moving cylinder has a taper, the expandable sleeve will gradually shrink, further making The expandable sleeve is separated from the inner wall of the first rod sleeve, and the second rod sleeve can move inside the inner wall of the first rod sleeve to adjust the length of the crutch; when the second rod is rotated clockwise When the sleeve is used, the conical moving cylinder will move along the central rod to the direction close to the expandable sleeve. Since the conical moving cylinder has a taper, the expandable sleeve will gradually expand, further making the expandable sleeve and the first section The inner walls of the rod sleeves are tightly fitted to realize the fixing of the first rod sleeve and the second rod sleeve. The utility model has the advantages of simple structure, high safety and stability, convenient adjustment of length to suit different groups of people, and wide application range.

Description of drawings

Fig. 1 is the structural representation of telescopic climbing crutch of the present utility model;

Fig. 2 is a schematic diagram of the assembly structure of the locking device of the retractable mountaineering stick shown in Fig. 1;

Fig. 3 is a disassembled structural schematic diagram of the locking device of the telescopic climbing stick shown in Fig. 1;

Fig. 4 is a schematic diagram of the assembly structure of the first section rod sleeve and the expandable sleeve of the retractable mountaineering crutch shown in Fig. 1;

Fig. 5 is a schematic cross-sectional structure diagram of the conical moving cylinder of the retractable mountaineering crutch shown in Fig. 1;

Fig. 6 is a structural schematic diagram of the expandable sleeve of the retractable mountaineering stick shown in Fig. 1;

Fig. 7 is a schematic structural view of the first joint cover of the retractable mountaineering stick shown in Fig. 1 .

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The utility model provides a retractable mountaineering crutch, as shown in Figure 1-7, comprising a handle 1 fixedly connected in sequence, a telescopic device and a contact foot 2 in contact with the ground, wherein:

The telescoping device includes the first joint rod sleeve 3 and the second joint rod sleeve 4 which are sequentially socketed. A locking device is provided at the connection between the second joint rod sleeve 4 and the first joint rod sleeve 3 , and the locking The device includes a base 5 fixedly connected to the second rod sleeve 4, a central rod 6 is fixed on the base 5, and a conical moving cylinder 7, a spring 8 and an expandable sleeve 9 are sleeved on the central rod 6;

One end of the central rod 6 is fixedly connected with the base 5, the other end of the central rod 6 is provided with a cylindrical boss 6-1, the spring 8 is arranged between the cylindrical boss 6-1 and the conical moving cylinder 7, and the expandable sleeve 9 Set between the base 5 and the conical moving cylinder 7;

The central rod 6 is provided with an external thread, the inner wall of the conical moving cylinder 7 is provided with an internal thread 7-1 matched with the external thread, and the outer surface of the conical mobile cylinder 7 is uniformly provided with several guide ribs 7 along the longitudinal direction. -2, the expandable sleeve 9 is evenly provided with several guide grooves 9-1 along the longitudinal direction for inserting the guide ribs 7-2;

The diameter of the inner wall of the first joint rod sleeve 3 is greater than the outer surface diameter of the second joint rod sleeve 4, the maximum diameter of the outer surface of the conical moving cylinder 7 is greater than the inner wall diameter of the expandable sleeve 9, and the outer surface of the conical moving cylinder 7 Both the maximum surface diameter and the outer surface diameter of the expandable sleeve 9 are smaller than the inner wall diameter of the first rod sleeve 3 .

The retractable mountaineering crutches of the present utility model can rotate the central rod 6 in the locking device by rotating the second rod sleeve 4, and through the threaded connection between the central rod 6 and the conical moving cylinder 7, the conical movement can be realized. The movement of cylinder 7. When the second rod sleeve 4 is rotated counterclockwise, the conical moving cylinder 7 will move away from the expandable sleeve 9 along the central rod 6. Since the conical moving cylinder 7 has a taper, the expandable sleeve will 9 gradually shrinks, further making the expandable sleeve 9 disengage from the inner wall of the first joint rod sleeve 3, at this time the second joint rod sleeve 4 can move in the inner wall of the first joint rod sleeve 3, thereby adjusting the crutch length; when the second rod sleeve 4 is rotated clockwise, the conical moving cylinder 7 will move along the central rod 6 to the direction close to the expandable sleeve 9, because the conical moving cylinder 7 has a taper, it will make the expandable The sleeve 9 expands gradually, further making the expandable sleeve 9 closely adhere to the inner wall of the first joint rod sleeve 3 , so as to realize the fixing of the first joint rod sleeve 3 and the second joint rod sleeve 4 . The utility model has the advantages of simple structure, high safety and stability, convenient adjustment of length to suit different groups of people, and wide application range.

Preferably, the first rod sleeve 3 is provided with several positioning pins 10 for positioning the expandable sleeve 9 , and the expandable sleeve 9 is provided with pin holes 9 - 2 matched with the positioning pins 10 . As shown in Figure 4, after the length of the crutches is determined, during the locking process of the expandable sleeve 9 and the first joint sleeve 3, when the second joint sleeve 4 is rotated clockwise, the positioning pin 10 can prevent The expandable sleeve 9 rotates to improve the locking effect between the expandable sleeve 9 and the first rod sleeve 3 . Further, in order to prevent the first joint rod sleeve 3 and the expandable sleeve 9 from slipping during the locking process, so that the fixation between the expandable sleeve 9 and the first joint rod sleeve 3 is more firm, the first joint The inner wall of the rod sleeve 3 and the outer surface of the expandable sleeve 9 are provided with matching circumferential tooth surfaces 15, and the tooth tip circle diameter d2 of the circumferential tooth surface 15 of the first rod sleeve 3 is larger than that of the expandable sleeve 9. The diameter d1 of the addendum circle on the circumferential tooth surface 15 of the sleeve 9 .

Further, four guide grooves 9 - 1 are provided on the expandable sleeve 9 , and one guide groove 9 - 1 runs through the expandable sleeve 9 longitudinally. This design can improve the expansion effect of the expandable sleeve 9 , thereby increasing the frictional force between the expandable sleeve 9 and the first rod sleeve 3 .

In order to increase the friction between the expandable sleeve 9 and the first rod sleeve 3 and prevent the expandable sleeve 9 and the conical moving cylinder 7 from rotating with the central rod 6, the outer surface of the expandable sleeve 9 is provided with an anti-skid layer.

Further, the telescoping device also includes a third rod sleeve 11 inserted into the second rod sleeve 4, and the connection between the third rod sleeve 11 and the second rod sleeve 4 is also provided with the same structure the locking device. This design can increase the adjustment range of the crutch and increase its application range.

As a further improvement of the present utility model, a first joint sleeve is provided between the first joint rod sleeve 3 and the second joint rod sleeve 4 and between the second joint rod sleeve 4 and the third joint rod sleeve 3 12. The second joint sleeve 13, the first joint sleeve 12 and the second joint sleeve 13 are provided with stepped holes, wherein: the small diameter of the stepped hole of the first joint sleeve 12 and the outer surface of the second rod sleeve 4 The same diameter, the small diameter of the stepped hole of the first joint sleeve 12 is smaller than the outer surface diameter of the expandable sleeve 9; the small diameter of the stepped hole of the second joint sleeve 12 is the same as the outer surface diameter of the third rod sleeve 11, the second The small diameter of the stepped hole of the joint sleeve 13 is smaller than the diameter of the outer surface of the expandable sleeve 9 . The design of the first joint sleeve 12 and the second joint sleeve 13 can better realize the connection between the second joint sleeve 4 and the first joint sleeve 3 and the third joint sleeve 11 and the second joint sleeve 4. Connection, the size design of the inner stepped hole of the first joint sleeve 12 and the second joint sleeve 13 can prevent the second joint sleeve 4 from connecting with the first joint sleeve 3 and the third joint sleeve 11 from the second joint sleeve. The detachment of the cylinder 4 ensures the stability of the connection.

In the utility model, the first joint rod sleeve 3, the second joint rod sleeve 4 and the third joint rod sleeve 11 are all made of carbon fiber material, and the crutch is made of carbon fiber material, which has the advantages of lightness and high strength. The contact pin 2 includes a top 2-1 and an alloy head 2-2 fixedly connected with the top 2-1, and the top 2-1 and the alloy head 2-2 are covered with a rubber expandable sleeve pad 2-3, and the rubber is expandable The lower end of the sleeve pad 2-3 is provided with anti-skid lines. When encountering hard and smooth stone steps, use the alloy head 2-2 to contact the ground. When encountering a sponge-soft ground, use rubber expandable sleeve pads. 2-3 is in contact with the ground, and the lower end of the rubber expandable sleeve pad 2-3 is provided with anti-skid lines, which can increase the friction between the crutches and the ground and improve the safety of the user walking. In order to use and store more conveniently, the handle 1 adopts a grip handle, and the grip handle is made of rubber material, and a sling 14 is arranged on the grip handle.

The foregoing is a preferred embodiment of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present utility model. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (10)

1. A retractable climbing stick, characterized in that it comprises a handle, a retractable device and contact feet that are in contact with the ground in turn, wherein: The telescoping device includes a first joint rod sleeve and a second joint rod sleeve which are sequentially socketed, and a locking device is provided at the connection between the second joint rod sleeve and the first joint rod sleeve, The locking device includes a base fixedly connected to the second rod sleeve, a central rod is fixed on the base, and a conical moving cylinder, a spring and an expandable sleeve are sleeved on the central rod; One end of the central rod is fixedly connected to the base, the other end of the central rod is provided with a cylindrical boss, the spring is arranged between the cylindrical boss and the conical moving cylinder, and the expandable sleeve arranged between the base and the conical moving cylinder; The central rod is provided with an external thread, the inner wall of the conical moving cylinder is provided with an internal thread matching the external thread, and the outer surface of the conical moving cylinder is uniformly provided with several guides along the longitudinal direction. Ribs, the expandable sleeve is uniformly provided with several guide grooves for inserting the guide ribs along the longitudinal direction; The inner wall diameter of the first joint rod sleeve is larger than the outer surface diameter of the second joint rod sleeve, the maximum diameter of the outer surface of the tapered moving cylinder is larger than the inner wall diameter of the expandable sleeve, and the cone The maximum diameter of the outer surface of the shaped moving cylinder and the outer surface diameter of the expandable sleeve are both smaller than the inner wall diameter of the first joint rod sleeve. 2. The retractable mountaineering crutch according to claim 1, characterized in that, several positioning pins for positioning the expandable sleeve are arranged on the first joint rod sleeve, and the expandable sleeve A pin hole matched with the positioning pin is arranged on the sleeve. 3. The retractable mountaineering crutch according to claim 2, characterized in that, the inner wall of the first joint rod sleeve and the outer surface of the expandable sleeve are provided with matching circumferential tooth surfaces The diameter of the addendum circle on the circumferential tooth surface of the first section rod sleeve is greater than the diameter of the addendum circle on the circumferential tooth surface of the expandable sleeve. 4. The retractable mountaineering crutch according to claim 1, characterized in that, the expandable sleeve is provided with four guide grooves, one of which runs through the expandable sleeve longitudinally. 5. The retractable mountaineering crutch according to claim 1, characterized in that an anti-slip layer is provided on the outer surface of the expandable sleeve. 6. The retractable mountaineering crutch according to any one of claims 1-5, wherein the telescoping device further comprises a third rod sleeve plugged into the second rod sleeve, the A locking device with the same structure is also provided at the joint between the third section rod sleeve and the second section rod sleeve. 7. The retractable mountaineering crutch according to claim 6, characterized in that, between the first section rod sleeve and the second section rod sleeve and between the second section rod sleeve and the third section rod A first joint sleeve and a second joint sleeve are respectively arranged between the sleeves, and stepped holes are arranged in the first joint sleeve and the second joint sleeve, wherein: The small diameter of the stepped hole of the first joint sleeve is the same as the outer surface diameter of the second joint rod sleeve, and the small diameter of the stepped hole of the first joint sleeve is smaller than the outer surface diameter of the expandable sleeve; The small diameter of the stepped hole of the second joint sleeve is the same as the outer surface diameter of the third rod sleeve, and the small diameter of the stepped hole of the second joint sleeve is smaller than the outer surface diameter of the expandable sleeve. 8. The retractable mountaineering crutch according to claim 7, characterized in that, the first rod sleeve, the second rod sleeve and the third rod sleeve are all made of carbon fiber. 9. The retractable mountaineering stick according to claim 8, wherein the tentacles include a plug and an alloy head fixedly connected with the plug, and rubber expandable sleeves are set on the plug and the alloy head As for the cylinder pad, the lower end of the rubber expandable sleeve pad is provided with anti-slip lines. 10 . The retractable mountaineering crutch according to claim 9 , wherein the handle is a head-grip handle, the head-grip handle is made of rubber material, and a sling is arranged on the head-grip handle. 11 .