External locking device, walking stick assembly and walking stick

Abstract

The utility model relates to a kind of external locking device, walking stick assembly and walking stick, it solves how to improve the locking force, security, reliability technical problem of walking stick product lock catch device, it includes outer tube, locking sleeve, wrench, pull column, adjusting screw, upper pin shaft, lower pin shaft and fixed pin, the front end of outer tube is equipped with gap, locking sleeve is sleeved in the front end of outer tube and is fixedly connected, locking sleeve is equipped with upper free end and lower free end, upper free end is equipped with upper accommodating groove and two upper pin holes, lower free end is equipped with lower accommodating groove and two lower pin holes, the two rotating arms of wrench lower end are rotationally connected in the upper accommodating groove of upper free end, pull column is connected with wrench.The utility model is widely used in walking stick.

Description

Technical Field

[0001] This utility model relates to the field of cane technology, specifically to an external locking device, a cane assembly, and a cane. Background Technology

[0002] A walking stick is a walking aid primarily used for hiking, mountaineering, skiing, and assisting the elderly with walking. Walking sticks can be categorized into single-section, two-section, three-section, four-section, and five-section types. Multi-section walking sticks offer advantages such as ease of use, wide applicability, short storage length, and portability.

[0003] Multi-section walking sticks come in two structural types: telescopic and folding. For the telescopic type, the inner rod can extend or retract within the outer rod to adjust its length. The outer and inner rods are connected and fixed by a locking device. The structure of the locking device can be found in utility model patents CN223008568U and CN208845523U. For the folding type, refer to utility model patent CN212036349U. Multiple rods are folded together, and when in use, they are unfolded. Adjacent rods are fixed together by a locking device. Regarding the locking device, an adjusting nut is used to adjust the tightening force. For example, before tightening, rotating the adjusting nut reduces the force required to operate the wrench, making it suitable for users with less hand strength. After tightening, rotating the adjusting nut adjusts the tightening force. Furthermore, after prolonged use, the connection between the outer and inner rods may deform due to fatigue, requiring the nut to be rotated to adjust the tightening force appropriately.

[0004] How to improve the locking force of the locking device and enhance its reliability and safety is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application aims to solve the technical problem of how to improve the locking force, safety, and reliability of the locking device of a walking stick product, and provides a safer and more reliable external locking device, walking stick assembly, and walking stick.

[0006] The first aspect of this application discloses an external locking device, including an outer tube, a locking sleeve, a wrench, a pull column, an adjusting screw, an upper pin, a lower pin, and a fixing pin. The front end of the outer tube is provided with a notch. The locking sleeve is fitted onto the front end of the outer tube and fixedly connected. The locking sleeve is provided with an upper free end and a lower free end, which are close to each other. The upper free end is provided with an upper receiving groove and two upper pin holes located on both sides of the upper receiving groove. The lower free end is provided with a lower receiving groove and two lower pin holes located on both sides of the lower receiving groove.

[0007] The lower end of the wrench is provided with a first rotating arm and a second rotating arm. The first rotating arm is provided with a first outer connecting hole and a first inner pin hole. The second rotating arm is provided with a second outer connecting hole and a second inner pin hole. The upper end of the pulling column is provided with an upper end pin hole. The lower part of the pulling column is provided with an oblong hole. The lower end of the pulling column is provided with a screw hole. The upper part of the pulling column is provided with a notch located below the upper end pin hole. The adjusting screw is connected to the screw hole at the lower end of the pulling column, and the front end of the adjusting screw is located in the oblong hole. The upper end of the pulling column is located between the first rotating arm and the second rotating arm. The fixing pin passes through the first inner pin hole of the first rotating arm, the upper end pin hole of the pulling column, and the second inner pin hole of the second rotating arm in sequence for fixed connection.

[0008] The first and second rotating arms of the wrench are located in the upper receiving groove of the upper free end of the locking sleeve. The upper pin passes through the two upper pin holes of the upper free end, the first outer connecting hole of the first rotating arm and the second outer connecting hole of the second rotating arm. The two ends of the upper pin are fixed in the two upper pin holes respectively. The first and second rotating arms can rotate with the upper pin as the reference.

[0009] The lower part of the pull column is located in the lower receiving groove of the lower free end of the locking sleeve. The lower pin passes through the two lower pin holes of the lower free end and the waist-shaped hole of the pull column. The two ends of the lower pin are fixed in the two lower pin holes respectively. When the wrench is not pressed down, the front end of the adjusting screw does not abut against the lower pin, and the upper pin is not located in the notch of the pull column. When the wrench is pressed down, the front end of the adjusting screw abuts against the lower pin, and the upper pin is located in the notch of the pull column.

[0010] Preferably, the notch at the front end of the outer tube is an L-shaped notch.

[0011] Preferably, the outer tube is made of an alloy material.

[0012] Preferably, the upper part of the locking sleeve and / or the wrench is provided with a weight reduction window.

[0013] Preferably, the inner wall of the locking sleeve is provided with a positioning step, and the front end face of the outer tube rests on the positioning step.

[0014] A second aspect of this application discloses a cane assembly, including an inner tube and any one of the aforementioned external locking devices, wherein the front end of the outer tube is fitted onto the inner tube in the external locking device.

[0015] A third aspect of this application discloses a walking stick, including the aforementioned walking stick components.

[0016] The fourth aspect of this application discloses an external locking device, including a locking sleeve, a wrench, a pulling column, an adjusting screw, an upper pin, a lower pin, and a fixing pin. The locking sleeve has an upper free end and a lower free end, which are close to each other. The upper free end has an upper receiving groove and two upper pin holes located on both sides of the upper receiving groove. The lower free end has a lower receiving groove and two lower pin holes located on both sides of the lower receiving groove.

[0017] The lower end of the wrench is provided with a first rotating arm and a second rotating arm. The first rotating arm is provided with a first outer connecting hole and a first inner pin hole. The second rotating arm is provided with a second outer connecting hole and a second inner pin hole. The upper end of the pulling column is provided with an upper end pin hole. The lower part of the pulling column is provided with an oblong hole. The lower end of the pulling column is provided with a screw hole. The upper part of the pulling column is provided with a notch located below the upper end pin hole. The adjusting screw is connected to the screw hole at the lower end of the pulling column, and the front end of the adjusting screw is located in the oblong hole. The upper end of the pulling column is located between the first rotating arm and the second rotating arm. The fixing pin passes through the first inner pin hole of the first rotating arm, the upper end pin hole of the pulling column, and the second inner pin hole of the second rotating arm in sequence for fixed connection.

[0018] The first and second rotating arms of the wrench are located in the upper receiving groove of the upper free end of the locking sleeve. The upper pin passes through the two upper pin holes of the upper free end, the first outer connecting hole of the first rotating arm and the second outer connecting hole of the second rotating arm. The two ends of the upper pin are fixed in the two upper pin holes respectively. The first and second rotating arms can rotate with the upper pin as the reference.

[0019] The lower part of the pull column is located in the lower receiving groove of the lower free end of the locking sleeve. The lower pin passes through the two lower pin holes of the lower free end and the waist-shaped hole of the pull column. The two ends of the lower pin are fixed in the two lower pin holes respectively. When the wrench is not pressed down, the front end of the adjusting screw does not abut against the lower pin, and the upper pin is not located in the notch of the pull column. When the wrench is pressed down, the front end of the adjusting screw abuts against the lower pin, and the upper pin is located in the notch of the pull column.

[0020] Preferably, the notch at the front end of the outer tube is an L-shaped notch.

[0021] Preferably, the outer tube is made of an alloy material.

[0022] The beneficial effects of this disclosure are: convenient operation; large locking force; adjustable locking force; and good safety, preventing loosening after locking, thus improving long-term safety and reliability. When the locking sleeve, wrench, pull post, and adjusting screw occupy less space after pressing down the wrench, the cane product structure is more compact, providing a comfortable grip and improving the user experience.

[0023] Further features and aspects of this disclosure will be clearly described in the following detailed description with reference to the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is an isometric view of the cane assembly;

[0025] Figure 2 yes Figure 1 Another isometric view of the cane assembly shown;

[0026] Figure 3 This is an exploded view of the cane components;

[0027] Figure 4 yes Figure 3 The diagram shows the structure of the outer tube and the locking sleeve.

[0028] Figure 5 It is an isometric view of the locking sleeve;

[0029] Figure 6 It is an isometric drawing of a wrench;

[0030] Figure 7 It is an isometric view of the pull column;

[0031] Figure 8 yes Figure 1 The cross-sectional view of the cane assembly shown;

[0032] Figure 9 This is a structural diagram of the cane assembly with the external locking device in the locked state;

[0033] Figure 10 yes Figure 9 The diagram shows a cross-sectional view of the cane assembly.

[0034] Explanation of symbols in the diagram:

[0035] 1. Outer tube, 1-1. L-shaped notch, 2. Inner tube, 3. Locking sleeve, 3-1. Upper free end, 3-1-1. Upper receiving groove, 3-1-2. Upper pin hole, 3-2. Lower free end, 3-2-1. Lower receiving groove, 3-2-2. Lower pin hole, 3-3. Weight reduction window, 3-4. Positioning step, 4. Wrench, 4-1. First rotating arm, 4-1-1. First outer connecting hole, 4-1-2. First inner pin hole, 4-2. Second rotating arm, 4-2-1. Second outer connecting hole, 4-2-2. Second inner pin hole, 4-3. Weight reduction window, 5. Pulling column, 5-1. Upper end pin hole, 5-2. Waist-shaped hole, 5-3. Screw hole, 5-4. Notch, 6. Adjusting screw, 7. Upper pin shaft, 8. Lower pin shaft, 9. Fixing pin. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] The specific embodiments described below are merely preferred embodiments of this application, and the scope of protection of this application is not limited thereto. Those skilled in the art can make modifications or variations based on the principles, concepts, and spirit of this application, and the resulting technical solutions should all be covered within the scope of protection of this application.

[0038] The cane components are part of the overall cane product, such as Figure 1-8 As shown, the cane assembly includes an external locking device and an inner tube 2. The external locking device includes an outer tube 1, a locking sleeve 3, a wrench 4, a pulling post 5, an adjusting screw 6, an upper pin 7, a lower pin 8, and a fixing pin 9. The front end of the outer tube 1 is provided with an L-shaped notch 1-1. The locking sleeve 3 is fitted onto the front end of the outer tube 1 and fixedly connected (adhesive can be applied to the inner wall of the locking sleeve 3 and glued for fixation). The locking sleeve 3 has an upper free end 3-1 and a lower free end 3-2, which are close to each other. The upper free end 3-1 has an upper receiving groove 3-1-1 and two upper pin holes 3-1-2 located on both sides of the upper receiving groove 3-1-1. The lower free end 3-2 has a lower receiving groove 3-2-1 and two lower pin holes 3-2-2 located on both sides of the lower receiving groove 3-2-1. The locking sleeve 3 also has a weight-reducing window 3-3, which reduces the weight of the locking sleeve 3.

[0039] The lower end of the wrench 4 is provided with a first rotating arm 4-1 and a second rotating arm 4-2. The first rotating arm 4-1 is provided with a first outer connecting hole 4-1-1 and a first inner pin hole 4-1-2. The second rotating arm 4-2 is provided with a second outer connecting hole 4-2-1 and a second inner pin hole 4-2-2. The upper end of the pull column 5 is provided with an upper end pin hole 5-1. The lower part of the pull column 5 is provided with an oblong hole 5-2. The lower end of the pull column 5 is provided with a screw hole 5-3. The upper part of the pull column 5 is provided with a notch 5-4, which is located below the upper end pin hole 5-1. The adjusting screw 6 is connected to the screw hole 5-3, and the front end of the adjusting screw 6 is located in the oblong hole 5-2. When the pull column 5 is fixedly connected to the wrench 4, the upper end of the pull column 5 is positioned between the first rotating arm 4-1 and the second rotating arm 4-2. The fixing pin 9 is used to pass through the first inner pin hole 4-1-2 of the first rotating arm 4-1, the upper end pin hole 5-1 of the pull column 5, and the second inner pin hole 4-2-2 of the second rotating arm 4-2 in sequence for fixed connection.

[0040] When the wrench 4 is rotatably connected to the upper free end 3-1 of the locking sleeve 3, the first rotating arm 4-1 and the second rotating arm 4-2 are located in the upper receiving groove 3-1-1 of the upper free end 3-1. The upper pin 7 passes through the two upper pin holes 3-1-2, the first outer connecting hole 4-1-1 of the first rotating arm 4-1 and the second outer connecting hole 4-2-1 of the second rotating arm 4-2. The two ends of the upper pin 7 are respectively fixed in the two upper pin holes 3-1-2, and the first rotating arm 4-1 and the second rotating arm 4-2 can rotate with the upper pin 7 as the reference.

[0041] The lower part of the pulling column 5 is positioned in the lower receiving groove 3-2-1 of the lower free end 3-2 of the locking sleeve 3. A lower pin 8 passes through two lower pin holes 3-2-2 and the oblong hole 5-2 of the pulling column 5, with both ends of the lower pin 8 fixed in the two lower pin holes 3-2-2 respectively. Relatively speaking, the lower pin 8 can move up and down in the oblong hole 5-2. Figure 1 , 2 As shown in Figure 8, the inner tube 2 is inserted into the front end of the outer tube 1 (the front end of the outer tube 1 is fitted onto the inner tube 2), the wrench 4 is in the initial unpressed state, the external locking device is in the unlocked state, the upper pin 7 is not located in the notch 5-4, the front end of the adjusting screw 6 is not against the lower pin 8, and there is a certain gap between the front end of the adjusting screw 6 and the lower pin 8.

[0042] When using the external locking device to fix the inner tube 2 and outer tube 1, press down on the wrench 4 by hand. The wrench 4 rotates towards the locking sleeve 3 with the upper pin 7 as the reference. The wrench 4 drives the pulling column 5 to move upward, and the front end of the adjusting screw 6 abuts against the lower pin 8. Under the pulling force of the pulling column 5, the lower free end 3-2 of the locking sleeve 3 moves towards the upper free end 3-1, and the front end of the outer tube 1 deforms, achieving locking. The upper pin 7 is located in the notch 5-4, and the wrench 4 is held on the locking sleeve 3. Figure 9 and 10 As shown.

[0043] During use, the locking force can be adjusted by turning the adjusting screw 6 according to the actual situation. The deeper the adjusting screw 6 is turned in, the greater the locking force.

[0044] The inner tube 2 and the outer tube 1 can be in a telescopic assembly relationship or a folding assembly relationship. That is to say, the above-mentioned external locking device can be used not only for telescopic canes but also for folding canes.

[0045] As can be seen, the aforementioned external locking device is easy to operate, has a large locking force, and the locking force is adjustable; after locking, it is not easy to loosen, has good safety, and improves the safety and reliability of long-term use. When the wrench 4 is pressed down and in the locked state, the locking sleeve 3, wrench 4, pull column 5, and adjusting screw 6 occupy little space, making the cane product structure more compact, comfortable to hold, and improving the user experience.

[0046] The outer tube 1 is preferably made of alloy material, which can achieve a safer and more reliable effect.

[0047] It should be noted that the L-shaped notch 1-1 at the front end of the outer tube 1 is a preferred design. The L-shape can prevent breakage at the notch at the front end of the outer tube 1, especially after long-term use, thus improving reliability. Those skilled in the art will understand that the front end of the outer tube 1 can also be designed with other specific shapes of notches.

[0048] It should be noted that a weight-reducing window 4-3 can also be set on the upper part of the wrench 4. This can reduce the weight of the wrench 4 on the one hand, and make it easier for the operator to press with their fingers on the other hand.

[0049] It should be noted that, as Figure 4 As shown, a positioning step 3-4 can be provided on the inner wall of the locking sleeve 3. When the outer tube 1 and the locking sleeve 3 are assembled, the front end face of the outer tube 1 rests on the positioning step 3-4 to achieve precise positioning and ensure assembly quality and product consistency.

Claims

1. An external locking device, characterized in that, The device includes an outer tube, a locking sleeve, a wrench, a pull column, an adjusting screw, an upper pin, a lower pin, and a fixing pin. The front end of the outer tube has a notch. The locking sleeve is fitted onto the front end of the outer tube and fixedly connected. The locking sleeve has an upper free end and a lower free end, which are close to each other. The upper free end has an upper receiving groove and two upper pin holes located on both sides of the upper receiving groove. The lower free end has a lower receiving groove and two lower pin holes located on both sides of the lower receiving groove. The lower end of the wrench is provided with a first rotating arm and a second rotating arm. The first rotating arm is provided with a first outer connecting hole and a first inner pin hole. The second rotating arm is provided with a second outer connecting hole and a second inner pin hole. The upper end of the pulling column is provided with an upper end pin hole. The lower part of the pulling column is provided with an oblong hole. The lower end of the pulling column is provided with a screw hole. The upper part of the pulling column is provided with a notch located below the upper end pin hole. The adjusting screw is connected to the screw hole at the lower end of the pulling column, and the front end of the adjusting screw is located in the oblong hole. The upper end of the pulling column is located between the first rotating arm and the second rotating arm. The fixing pin passes through the first inner pin hole of the first rotating arm, the upper end pin hole of the pulling column, and the second inner pin hole of the second rotating arm in sequence for fixed connection. The first and second rotating arms of the wrench are located in the upper receiving groove of the upper free end of the locking sleeve. The upper pin passes through the two upper pin holes of the upper free end, the first outer connecting hole of the first rotating arm and the second outer connecting hole of the second rotating arm. The two ends of the upper pin are respectively fixed in the two upper pin holes. The first and second rotating arms can rotate with the upper pin as a reference. The lower part of the pull column is located in the lower receiving groove of the lower free end of the locking sleeve. The lower pin passes through the two lower pin holes of the lower free end and the waist-shaped hole of the pull column. The two ends of the lower pin are respectively fixed in the two lower pin holes. When the wrench is not pressed down, the front end of the adjusting screw does not abut against the lower pin, and the upper pin is not located in the notch of the pull column. When the wrench is pressed down, the front end of the adjusting screw abuts against the lower pin, and the upper pin is located in the notch of the pull column.

2. The external locking device according to claim 1, characterized in that, The notch at the front end of the outer tube is an L-shaped notch.

3. The external locking device according to claim 1 or 2, characterized in that, The outer tube is made of alloy material.

4. The external locking device according to claim 1, characterized in that, The upper part of the locking sleeve and / or the wrench is provided with a weight reduction window.

5. The external locking device according to claim 1, characterized in that, The inner wall of the locking sleeve is provided with a positioning step, and the front end face of the outer tube rests on the positioning step.

6. A cane assembly, characterized in that, It includes an inner tube and an external locking device as described in any one of claims 1-5, wherein the front end of the outer tube is sleeved on the inner tube in the external locking device.

7. A walking stick, characterized in that, Includes the cane assembly as described in claim 6.

8. An external locking device, characterized in that, It includes a locking sleeve, a wrench, a pulling column, an adjusting screw, an upper pin, a lower pin, and a fixing pin. The locking sleeve has an upper free end and a lower free end that are close to each other. The upper free end has an upper receiving groove and two upper pin holes located on both sides of the upper receiving groove. The lower free end has a lower receiving groove and two lower pin holes located on both sides of the lower receiving groove. The lower end of the wrench is provided with a first rotating arm and a second rotating arm. The first rotating arm is provided with a first outer connecting hole and a first inner pin hole. The second rotating arm is provided with a second outer connecting hole and a second inner pin hole. The upper end of the pulling column is provided with an upper end pin hole. The lower part of the pulling column is provided with an oblong hole. The lower end of the pulling column is provided with a screw hole. The upper part of the pulling column is provided with a notch located below the upper end pin hole. The adjusting screw is connected to the screw hole at the lower end of the pulling column, and the front end of the adjusting screw is located in the oblong hole. The upper end of the pulling column is located between the first rotating arm and the second rotating arm. The fixing pin passes through the first inner pin hole of the first rotating arm, the upper end pin hole of the pulling column, and the second inner pin hole of the second rotating arm in sequence for fixed connection. The first and second rotating arms of the wrench are located in the upper receiving groove of the upper free end of the locking sleeve. The upper pin passes through the two upper pin holes of the upper free end, the first outer connecting hole of the first rotating arm and the second outer connecting hole of the second rotating arm. The two ends of the upper pin are respectively fixed in the two upper pin holes. The first and second rotating arms can rotate with the upper pin as a reference. The lower part of the pull column is located in the lower receiving groove of the lower free end of the locking sleeve. The lower pin passes through the two lower pin holes of the lower free end and the waist-shaped hole of the pull column. The two ends of the lower pin are respectively fixed in the two lower pin holes. When the wrench is not pressed down, the front end of the adjusting screw does not abut against the lower pin, and the upper pin is not located in the notch of the pull column. When the wrench is pressed down, the front end of the adjusting screw abuts against the lower pin, and the upper pin is located in the notch of the pull column.

9. The external locking device according to claim 8, characterized in that, The notch at the front end of the outer tube is an L-shaped notch.

10. The external locking device according to claim 8 or 9, characterized in that, The outer tube is made of alloy material.

Images