Adjusting lock mechanism of telescopic pipe and telescopic pipe structure

Abstract

The utility model discloses an adjusting lock mechanism of telescopic tube and telescopic tube structure, including lock seat main part and lock catch plate, lock seat main part is equipped with up-down run-through pipe groove, lock seat main part side is equipped with arc plate groove, one end of lock catch plate is articulated with lock seat main part, one end of lock catch plate has elasticity, and the lock seat main part is equipped with the arc plate groove. A through hole communicated with the pipe groove is formed in the arc-shaped plate groove, a lock pin is arranged on the side face, close to the arc-shaped plate groove, of the lock catch plate, and one end of the lock pin penetrates through the through hole to be located in the pipe groove. One end of the lock catch plate can rotate around the lock seat body, when the other end of the lock catch plate is pulled by a hand, the lock catch plate can rotate towards the outer side, the lock pin moves outwards along with the lock catch plate and is separated from an originally matched lock pin hole, at the moment, telescopic adjustment can be conducted on the telescopic pipe, and when the telescopic pipe is adjusted to the needed position, the lock catch plate can rotate towards the outer side. And the lock catch plate is loosened, under the condition that one end of the lock catch plate is elastic, the lock catch plate automatically resets, and the lock pin is inserted into the newly matched lock pin hole again.

Description

Technical Field

[0001] The utility model relates to the field of walking assistive devices, in particular to an adjusting lock mechanism of a telescopic tube and a telescopic tube structure. Background Art

[0002] A walker is an assistive device used for support, balance, and mobility assistance. It is widely used by the elderly and people with limited mobility. Existing walkers include a front support frame and a rear support frame. The front support frame has a vehicle tube and a telescopic tube. A handle is provided on the top of the telescopic tube. The telescopic tube is inserted into the vehicle tube. A spring pin is provided in the telescopic tube. The vehicle tube is provided with a plurality of pin holes arranged up and down. The latch portion of the spring pin is inserted into the pin hole. When the telescopic tube needs to be extended or retracted, the latch portion of the spring pin is pressed to separate the latch portion from the pin hole, thereby retracting the telescopic tube. The adjustment method of the above-mentioned telescopic tube requires pressing the latch portion of the spring pin with a finger during operation. Since the contact area of the latch portion is small, pressing will cause pain to the finger. Moreover, the telescopic tube can only adjust one pin hole at a time during the extension and retraction adjustment, and it is impossible to adjust the distance of multiple pin holes at one time as needed. Utility Model Content

[0003] The utility model provides an adjustment lock mechanism for a telescopic tube and a telescopic tube structure, the main purpose of which is to overcome the above-mentioned technical problems existing in the telescopic adjustment of the existing telescopic tube.

[0004] The utility model is implemented by the following technical solutions:

[0005] A telescopic tube adjustment lock mechanism includes a lock seat body and a lock strike plate, the lock seat body is provided with a tube groove running through it from top to bottom, the side of the lock seat body is provided with an arc-shaped plate groove, one end of the lock strike plate is hinged to the lock seat body, one end of the lock strike plate is elastic, a through hole connected to the tube groove is provided in the arc-shaped plate groove, a locking pin is provided on the side of the lock strike plate close to the arc-shaped plate groove, and one end of the lock pin passes through the through hole and is located in the tube groove.

[0006] Furthermore, an upturned portion is provided at the other end of the locking plate, and a placement space is formed between the upturned portion and the arc-shaped plate groove.

[0007] Furthermore, the lock seat body is provided with an upper hinged ear and a lower hinged ear, a lock fixing pin is connected between the upper hinged ear and the lower hinged ear, and the lock fixing pin passes through one end of the lock plate.

[0008] Furthermore, a mounting groove is provided at one end of the locking plate, and a double torsion spring is provided in the mounting groove. The double torsion spring includes a first U-shaped rod, a second U-shaped rod and two spring bodies. The two spring bodies are connected between the first U-shaped rod and the second U-shaped rod. The locking fixing pin passes through the two spring bodies. The first U-shaped rod conflicts with one side of the mounting groove, and the second U-shaped rod conflicts with the other side of the mounting groove.

[0009] Furthermore, a tube connection portion is provided at the bottom of the lock seat body, the tube groove extends to the bottom surface of the tube connection portion, a groove is provided on the side of the tube connection portion, an elastic sheet is formed in the groove, and a clamping portion is provided on the side of the elastic sheet away from the tube groove.

[0010] A telescopic tube structure adopts the aforementioned telescopic tube adjustment lock mechanism, comprising a sleeve and a telescopic tube, wherein the adjustment lock mechanism is arranged at the top of the sleeve, the lower portion of the telescopic tube passes through the tube groove of the adjustment mechanism and is located in the sleeve, and the side of the telescopic tube is provided with multiple lock pin holes arranged up and down, and the lock pins of the adjustment mechanism are inserted into the lock pin holes.

[0011] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: the tube groove is for the telescopic tube to pass through, and the side surface of the telescopic tube is provided with a plurality of lock pin holes arranged up and down, and one end of the lock plate can be rotated around the lock seat body. When the other end of the lock plate is pried open by hand, the lock plate can be rotated outward, so that the lock pin moves outward with the lock plate and separates from the originally matched lock pin hole. At this time, the telescopic tube can be telescopically adjusted. When the telescopic tube is adjusted to the desired position, the lock plate is released. Under the condition that one end of the lock plate is elastic, the lock plate automatically resets, and the lock pin is reinserted into the newly matched lock pin hole. When adjusting the telescopic tube, the present invention only needs to pry the lock plate, and the hand will not feel pain when prying the lock plate, as when pressing. At the same time, the telescopic tube can adjust the distance of multiple lock pin holes at one time as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the adjustment lock mechanism of the utility model.

[0013] Figure 2 This is a structural exploded view of the adjustment lock mechanism of the utility model.

[0014] Figure 3 This is a structural exploded view of the adjustment lock mechanism of the utility model from another angle.

[0015] Figure 4 This is a structural diagram of the telescopic tube structure of the utility model.

[0016] Figure 5 This is a structural diagram of the telescopic tube structure of the utility model from another angle. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] Reference Figures 1 to 3 A telescopic tube adjustment lock mechanism includes a lock base body 1 and a locking plate 2. The lock base body 1 is provided with a vertically extending tube groove 11. A curved plate groove 12 is provided on the side of the lock base body 1. One end of the locking plate 2 is hinged to the lock base body 1, and one end of the locking plate 2 is elastic. A through hole 13 is provided within the curved plate groove 12, communicating with the tube groove 11. A locking pin 21 is provided on the side of the locking plate 2 near the curved plate groove 12. One end of the locking pin 21 passes through the through hole 13 and is located within the tube groove 11.

[0019] Reference Figure 1 and Figure 2 The other end of the locking plate 2 is provided with an upturned portion 22, and a placement space 23 is formed between the upturned portion 22 and the arc-shaped plate groove 12. The placement space 23 is used for placing the hand when the locking plate 2 is pried open, and the upturned portion 22 is convenient for the hand to hold.

[0020] Reference Figures 1 to 3The lock base body 1 is provided with an upper hinged ear 14 and a lower hinged ear 15. A lock fixing pin 3 is connected between the upper hinged ear 14 and the lower hinged ear 15. The lock fixing pin 3 passes through one end of the lock plate 2, and the lock plate 2 can rotate around the lock fixing pin 3. One end of the lock plate 2 is provided with a mounting slot 24, and a double torsion spring 4 is provided in the mounting slot 24. The double torsion spring 4 includes a first U-shaped rod 41, a second U-shaped rod 42, and two spring bodies 43. The two spring bodies 43 are connected between the first U-shaped rod 41 and the second U-shaped rod 42. The lock fixing pin 3 passes through the two spring bodies 43. The first U-shaped rod 41 abuts against one side of the mounting slot 24, and the second U-shaped rod 42 abuts against the other side of the mounting slot 24. When the other end of the locking plate 2 is pried outward by the hand, the locking plate 2 can rotate outward around the locking pin 3, and the locking pin 21 also rotates outward with the locking plate 2. When the hand releases the locking plate 2, the locking plate 2 automatically returns to its original position under the elastic force of the double torsion spring 4. The diameter of the through hole 13 is larger than the outer diameter of the locking pin 21, so that the locking pin 21 can smoothly enter and exit the through hole 13 during the rotation of the locking plate 2.

[0021] Reference Figure 3 A tube connection portion 16 is provided at the bottom of the lock seat body 1, and the tube groove 11 extends to the bottom surface of the tube connection portion 16. A groove 17 is provided on the side of the tube connection portion 16, and an elastic sheet 18 is formed in the groove 17. A clamping portion 19 is provided on the side of the elastic sheet 18 away from the tube groove 11.

[0022] Reference Figures 1 to 5 A telescopic tube structure employing the aforementioned telescopic tube adjustment lock mechanism includes a sleeve 5 and a telescopic tube 6. The adjustment lock mechanism is disposed at the top of the sleeve 5. Specifically, the sleeve 5 is provided with a bayonet 51 adapted to the latch 19. The tube connecting portion 16 is inserted into the upper portion of the sleeve 5, and the latch 19 is latched in the bayonet 51, thereby achieving connection between the adjustment lock mechanism and the sleeve 5. When the adjustment lock mechanism needs to be disassembled, the latch 19 can be pressed to disengage the latch 51, at which point the adjustment lock mechanism can be removed from the sleeve 5. The lower portion of the telescopic tube 6 passes through the pipe groove 11 of the adjustment mechanism and is located within the sleeve 5. The side of the telescopic tube 6 is provided with a plurality of lock pin holes 61 arranged vertically, and the lock pin 21 of the adjustment mechanism is inserted into the lock pin holes 61.

[0023] Reference Figures 1 to 4The design principle of the present invention is as follows: one end of the lock plate 2 can rotate around the lock fixing pin 3 on the lock seat body 1. When the other end of the lock plate 2 is pried open by hand, the lock plate 2 can be rotated outward, so that the lock pin 21 moves outward with the lock plate 2 and separates from the originally matched lock pin hole 61. At this time, the telescopic tube 6 can be telescopically adjusted. When the telescopic tube 6 is adjusted to the desired position, the lock plate 2 is released. Under the action of the elastic force of the double torsion spring 4, the lock plate 2 is automatically reset, and the lock pin 21 is reinserted into the newly matched lock pin hole 61.

[0024] The above is only a specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An adjustable lock mechanism for a telescopic tube, characterized in that: It includes a lock seat body and a lock strike plate, the lock seat body is provided with a tube groove running through it from top to bottom, the side of the lock seat body is provided with an arc-shaped plate groove, one end of the lock strike plate is hinged to the lock seat body, one end of the lock strike plate is elastic, a through hole connected to the tube groove is provided in the arc-shaped plate groove, and a locking pin is provided on the side of the lock strike plate close to the arc-shaped plate groove, and one end of the locking pin passes through the through hole and is located in the tube groove.

2. The adjustable lock mechanism of the telescopic tube according to claim 1, characterized in that: The other end of the locking plate is provided with an upturned portion, and a placement space is formed between the upturned portion and the arc-shaped plate groove.

3. The adjustable lock mechanism of the telescopic tube according to claim 1, characterized in that: The lock seat body is provided with an upper hinged ear and a lower hinged ear, a lock fixing pin is connected between the upper hinged ear and the lower hinged ear, and the lock fixing pin passes through one end of the lock plate.

4. The adjustable lock mechanism of the telescopic tube according to claim 3, characterized in that: One end of the lock plate is provided with a mounting groove, and a double torsion spring is provided in the mounting groove. The double torsion spring includes a first U-shaped rod, a second U-shaped rod and two spring bodies. The two spring bodies are connected between the first U-shaped rod and the second U-shaped rod. The lock fixing pin passes through the two spring bodies. The first U-shaped rod conflicts with one side of the mounting groove, and the second U-shaped rod conflicts with the other side of the mounting groove.

5. The adjustable lock mechanism of the telescopic tube according to claim 1, characterized in that: A tube connection portion is provided at the bottom of the lock seat body, the tube groove extends to the bottom surface of the tube connection portion, a groove is provided on the side of the tube connection portion, an elastic sheet is formed in the groove, and a clamping portion is provided on the side of the elastic sheet away from the tube groove.

6. A telescopic tube structure, using the telescopic tube adjustment lock mechanism according to any one of claims 1 to 5, characterized in that: It includes a sleeve and a telescopic tube. The adjustment lock mechanism is arranged at the top of the sleeve. The lower part of the telescopic tube passes through the pipe groove of the adjustment mechanism and is located in the sleeve. The side of the telescopic tube is provided with multiple lock pin holes arranged up and down, and the lock pin of the adjustment mechanism is inserted into the lock pin hole.

Images