Lifting positioning structure and lifting rod and lifting frame thereof

Abstract

The utility model discloses a lifting positioning structure and a lifting rod and a lifting frame thereof, a fixed pipe is provided with an insertion hole and a side seat, and the side seat is provided with a mounting hole; the lifting pipe is movably inserted into the fixed pipe, and the positioning hole can correspond to the mounting hole; the positioner comprises a positioning body, a positioning bolt and a knob; the positioning body is separably connected to the side seat and is provided with a movable cavity communicated with the mounting hole; the positioning bolt is movably connected in the movable cavity and can move between a positioning position extending into the positioning hole and a moving-out position moving out of the positioning hole; the knob is fixedly connected to the head end of the positioning bolt and provided with a limiting mechanism, a limiting matching mechanism is arranged on the outer end face of the positioning body, and when the positioning bolt is located at the moving-out position, the positioning bolt can be kept at the moving-out position through limiting matching of the limiting mechanism and the limiting matching mechanism. The whole positioning structure is simple, the design is ingenious, it can be guaranteed that the positioner cannot fall off from the fixing pipe, and adjustment can be convenient and fast.

Description

Technical Field

[0001] The utility model relates to a lifting and positioning structure, a lifting rod and a lifting frame thereof. Background Art

[0002] For the Chinese utility model patent with the authorization publication number of CN210177210U and the name of a telescopic clothes hanger for student dormitory life, when in use, a user pulls a support rod to make the support rod and a sleeve rod slide relative to each other to adjust the height of a clothes drying rod. After the height of the clothes drying rod is adjusted, the user presses a positioning rod arranged on the side wall of a connecting pipe, so that the positioning rod penetrates through the connecting pipe and is connected with a positioning hole formed inside the support rod. The sleeve rod and the support rod are fixed through the positioning hole and the positioning rod, thereby improving the stability of the clothes drying rod during use.

[0003] However, the positioning rod is only inserted into the positioning hole, and there is no connecting structure between the positioning rod and the sleeve rod and the support rod, so it is very easy to fall off during use and cause the collapse of the whole clothes hanger; moreover, if the height of the clothes drying rod needs to be adjusted repeatedly, the positioning rod needs to be pulled out from the positioning hole, which requires holding the positioning rod with one hand, making it difficult to adjust the height with one hand. Summary of the Utility Model

[0004] The utility model provides a lifting and positioning structure, a lifting rod and a lifting frame thereof, which overcome the deficiencies existing in the background art. One of the technical solutions adopted by the utility model to solve its technical problems is:

[0005] A lifting and positioning structure, which comprises:

[0006] A fixed pipe, which is provided with a jack and a side seat, and the side seat is provided with an installation hole communicated with the jack;

[0007] A lifting pipe, which is provided with a plurality of positioning holes arranged at intervals, the lifting pipe is movably inserted into the fixed pipe, and the positioning holes can correspond to the installation holes;

[0008] A locator, which comprises a positioning body, a positioning pin and a knob. The positioning body is detachably connected to the side seat and is provided with a movable cavity communicated with the installation hole; the positioning pin is movably installed in the movable cavity and can move between a positioning position where it extends into the positioning hole and a removal position where it moves out of the positioning hole; the knob is fixedly connected to the head end of the positioning pin and is provided with a limiting mechanism, and the outer end face of the positioning body is provided with a limiting cooperation mechanism. When the positioning pin is in the removal position, the positioning pin can be kept in the removal position through the limiting cooperation of the limiting mechanism and the limiting cooperation mechanism.

[0009] In a preferred embodiment: The limiting mechanism includes a first limiting platform with a higher height and a second limiting platform with a lower height. The limiting and cooperating mechanism includes a first limiting groove with a deeper depth and a second limiting groove with a shallower depth. When the positioning pin is in the positioning position, the first limiting platform is fitted and engaged with the first limiting groove, and the second limiting platform is fitted and engaged with the second limiting groove. When the positioning pin is in the removed position, rotate the knob to make the first limiting platform correspond to the second limiting groove and the second limiting platform correspond to the first limiting groove. After loosening the knob, the first limiting platform abuts against the second limiting groove to hold the positioning pin in the removed position.

[0010] In a preferred embodiment: There are two first limiting platforms and two second limiting platforms, which are arranged staggeredly. There are two first limiting grooves and two second limiting grooves, which are arranged staggeredly.

[0011] In a preferred embodiment: The wall of the moving cavity is provided with a first anti - detachment step, and the outer periphery of the positioning pin is provided with a second anti - detachment step that can be in limiting cooperation with the first anti - detachment step.

[0012] In a preferred embodiment: The positioner further includes a positioning elastic member, and two ends of the positioning elastic member are respectively connected to the positioning pin and the wall of the moving cavity.

[0013] In a preferred embodiment: The positioning elastic member is a spring.

[0014] In a preferred embodiment: The inner end face of the knob is provided with a fixing screw hole, and the head end of the positioning pin is in screw connection and cooperation with the fixing screw hole.

[0015] In a preferred embodiment: The inner end of the positioning body is provided with a connecting head, and the connecting head extends into the installation hole and is in screw connection and cooperation with the installation hole.

[0016] The second technical solution adopted by the present invention to solve its technical problems is:

[0017] A lifting rod that applies the lifting and positioning structure described above.

[0018] The third technical solution adopted by the present invention to solve its technical problems is:

[0019] A lifting frame that applies the lifting and positioning structure described above.

[0020] Compared with the background technology, this technical solution has the following advantages:

[0021] 1. When the positioning pin is in the positioning position, its end extends into the positioning hole to fix the fixed tube and the lifting tube. When the positioning pin is in the retracted position, it can be held in the retracted position through the limiting cooperation between the limiting mechanism and the limiting cooperation mechanism. Specifically, the knob can be rotated relative to the positioning body, so that under the cooperation of the limiting mechanism and the limiting cooperation mechanism, the positioning pin is held in the retracted position. This is convenient for the user to adjust the height of the lifting tube with both hands. After the adjustment is completed, the knob is reset, and the positioning pin can be inserted into the positioning hole to continue positioning the lifting tube. The entire positioning structure is simple and ingeniously designed, which can not only ensure that the positioner will not fall off from the fixed tube, but also facilitate adjustment and quick adjustment.

[0022] 2. By matching two limiting platforms with different heights with two limiting grooves with different depths, when the positioning pin is in the positioning position, the two limiting platforms and the two limiting grooves are in an embedded fit; when the positioning pin is in the retracted position, only need to rotate the knob to drive the positioning pin to rotate simultaneously, so that the two limiting platforms and the two limiting grooves are misaligned and matched. Release the knob, and the first limiting platform with a higher height abuts against the second limiting groove with a shallower depth, which can ensure that the positioning pin is held in the retracted position without being held by hand, releasing one hand for adjusting the height of the lifting tube.

[0023] 3. The first anti-detachment step and the second anti-detachment step are in limiting cooperation to prevent the positioning pin from coming out of the movable cavity.

[0024] 4. The two ends of the positioning elastic member are respectively connected to the positioning pin and the wall of the movable cavity, which can further prevent the positioning pin from detaching from the movable cavity, and can pull the positioning pin back to the positioning position when the knob is released. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the present utility model with reference to the drawings and embodiments.

[0026] Figure 1 The overall schematic diagram of a lifting positioning structure according to a preferred embodiment is shown.

[0027] Figure 2 The three-dimensional exploded view of a lifting positioning structure according to a preferred embodiment is shown.

[0028] Figure 3 The three-dimensional exploded view of a positioner according to a preferred embodiment is shown.

[0029] Figure 4 The state diagram of the positioning pin in the positioning position according to a preferred embodiment is shown.

[0030] Figure 5 The state diagram of the positioning pin pulled outwards is shown. At this time, the first limiting platform corresponds to the first limiting groove, and the second limiting platform corresponds to the second limiting platform.

[0031] Figure 6 Shows a schematic diagram of the state of the rotary knob. At this time, the first limiting platform corresponds to the second limiting groove, and the second limiting platform corresponds to the first limiting groove.

[0032] Figure 7 Shows Figure 6 Cross-sectional schematic diagram of

[0033] Figure 8 Shows a schematic diagram of the state of the rotary knob rotated in the reverse direction after adjusting the height of the lifting pipe.

[0034] Figure 9 Shows a schematic diagram of the state where the rotary knob is pushed inward to drive the positioning pin to move inward synchronously to the positioning position.

[0035] Figure 10 Shows Figure 9 Cross-sectional schematic diagram of

[0036] Figure 11 Shows a schematic diagram of the structure of the lifting frame. Specific implementation mode

[0037] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are for distinguishing different objects, rather than for describing a specific order.

[0038] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present utility model.

[0039] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "fixed connection" and "fixed connection", should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrated into one body, and being fixed connected through other devices or elements.

[0040] In the claims, the description and the above-mentioned drawings of the present utility model, terms such as "comprising", "having" and their variants are intended to mean "including but not limited to".

[0041] Please refer to Figures 1 to 10 , a preferred embodiment of a lifting and positioning structure. The lifting and positioning structure includes a fixed tube 10, a lifting tube 20 and a positioner 30.

[0042] The fixed tube 10 is provided with a jack 11 and a side seat 12, and the side seat 12 is provided with a mounting hole 13 communicating with the jack 11.

[0043] As Figure 2 shown, the fixed tube 10 is in the shape of a hollow cylinder. According to needs, the fixed tube 10 can also be set in the shapes of a square, a triangle, etc., which is not limited thereto. The side seat 12 protrudes from the outer peripheral surface of the fixed tube 10 and is in the shape of a hollow cylinder.

[0044] The lifting tube 20 is provided with a plurality of positioning holes 21 arranged at intervals. The lifting tube 20 is movably inserted into the fixed tube 10 and the positioning holes 21 can correspond to the mounting holes 13. As Figure 2 shown, the shape of the lifting tube is adapted to the shape of the jack, and a plurality of the positioning holes are provided and arranged at intervals up and down.

[0045] The positioner 30 includes a positioning body 31, a positioning pin 32 and a knob 33. The positioning body 31 is detachably connected to the side seat 12 and is provided with a movable cavity 34 communicating with the mounting hole 13. The positioning pin 32 is movably installed in the movable cavity 34 and can move between a positioning position where it extends into the positioning hole 21 and a retracted position where it moves out of the positioning hole 21. The knob 33 is fixedly connected to the head end of the positioning pin 32 and is provided with a limiting mechanism, and the outer end surface of the positioning body 31 is provided with a limiting cooperation mechanism. When the positioning pin 32 is in the retracted position, the positioning pin 32 can be held in the retracted position by the limiting cooperation between the limiting mechanism and the limiting cooperation mechanism.

[0046] In this embodiment, the limiting mechanism includes a first limiting platform 35 with a higher height and a second limiting platform 36 with a lower height. The limiting cooperation mechanism includes a first limiting groove 37 with a deeper depth and a second limiting groove 38 with a shallower depth. When the positioning pin 32 is in the positioning position, the first limiting platform 35 is in interference fit with the first limiting groove 37 and the second limiting platform 36 is in interference fit with the second limiting groove 38. When the positioning pin 32 is in the retracted position, the knob 33 is rotated to make the first limiting platform 35 correspond to the second limiting groove 38 and the second limiting platform 36 correspond to the first limiting groove 37. After the knob 33 is released, the first limiting platform 35 abuts against the second limiting groove 38 to hold the positioning pin 32 in the retracted position.

[0047] In this embodiment, there are two first limiting platforms 35 and two second limiting platforms 36, which are arranged staggeredly. There are two first limiting grooves 37 and two second limiting grooves 38, which are also arranged staggeredly. Specifically, as Figure 3 shown, the first limiting grooves 37 and the second limiting grooves 38 form a "cross shape". The two first limiting grooves 37 are opposite to each other left and right, and the two second limiting platforms 36 are opposite to each other up and down. Correspondingly, the first limiting platforms 35 and the second limiting platforms 36 form a "cross shape". In this way, when the first limiting platforms 35 and the second limiting platforms 36 are respectively engaged with the first limiting grooves 37 and the second limiting grooves 38, the knob 33 cannot rotate. When the knob 33 is pulled outwards so that the first limiting platforms 35 and the second limiting platforms 36 are respectively separated from the first limiting grooves 37 and the second limiting grooves 38, the knob 33 can be rotated.

[0048] In this embodiment, as Figure 7 shown, a first anti - detachment step 341 is provided on the wall of the movable cavity 34, and a second anti - detachment step 321 capable of being in limiting cooperation with the first anti - detachment step 341 is provided on the outer periphery of the positioning pin 32.

[0049] In this embodiment, the positioner 30 further includes a positioning elastic member 39. The two ends of the positioning elastic member 39 are respectively connected to the positioning pin 32 and the wall of the movable cavity 34. Specifically, the positioning elastic member 39 is a spring. The spring is sleeved on the outer periphery of the positioning pin 32 and its two ends respectively abut against the first anti - detachment step 341 and the second anti - detachment step 321.

[0050] In this embodiment, a fixing screw hole is provided on the inner end face of the knob 33, and the head end of the positioning pin 32 is in screw connection with the fixing screw hole. According to requirements, other connection methods can also be adopted between the knob 33 and the positioning pin 32, such as screw locking, which is not limited thereto.

[0051] In this embodiment, a connecting head 311 is provided at the inner end of the positioning body 31. The connecting head 311 extends into the mounting hole 13 and is in screw connection with the mounting hole 13. According to requirements, the connecting head 311 and the mounting hole 13 can also be fixed by side screw locking, which is not limited thereto.

[0052] The working process of this positioning structure is as follows:

[0053] When it is necessary to adjust the height of the lifting pipe 20, just pull out the knob 33 outward, driving the positioning pin 32 to move outward, so that the positioning pin 32 moves from the positioning position to the removed position. At the same time, the first limiting platform 35 leaves the first limiting groove 37, and the second limiting platform 36 leaves the second limiting groove 38; then, rotate the knob 90 degrees to make the first limiting platform 35 correspond to the second limiting groove 38, and the second limiting platform 36 correspond to the first limiting groove 37; then, loosen the knob 33, and under the action of the positioning elastic member 39, the positioning pin 32 moves inward until the first limiting platform 35 abuts against the second limiting groove 38. Since the first limiting platform 35 is higher than the second limiting platform 36, it can ensure that the positioning pin 32 remains in the removed position. At this time, both hands can leave the knob 33 to adjust the height of the lifting pipe 20; after the adjustment is completed, pull out the knob 33 outward and rotate it 90 degrees in the reverse direction, then loosen the knob 33. Under the action of the positioning elastic member 39, the positioning pin 32 can move inward to the positioning position, that is, the end of the positioning pin 32 is inserted into the positioning hole 21, and the height adjustment of the lifting pipe 20 is completed. The entire adjustment process only requires single-person operation, which is convenient and simple.

[0054] Please refer to Figure 11 , which is a preferred embodiment of a lifting frame, and the lifting rod applies the above-mentioned lifting and positioning structure.

[0055] The above is only a preferred embodiment of the present invention, so the scope of implementation of the present invention cannot be limited thereby. That is, equivalent changes and modifications made according to the scope of the present invention patent and the content of the specification should still fall within the scope covered by the present invention.

Claims

1. A lifting and positioning structure, characterized in that: It includes: A fixed tube, which is provided with a jack and a side seat, and the side seat is provided with a mounting hole communicating with the jack; A lifting tube, which is provided with a plurality of positioning holes arranged at intervals, and the lifting tube is movably inserted into the fixed tube and the positioning holes can correspond to the mounting holes; A positioner, which includes a positioning body, a positioning pin and a knob. The positioning body is detachably connected to the side seat and is provided with a movable cavity communicating with the mounting hole; the positioning pin is movably installed in the movable cavity and can move between a positioning position where it extends into the positioning hole and a removal position where it moves out of the positioning hole; the knob is fixedly connected to the head end of the positioning pin and is provided with a limiting mechanism, and the outer end face of the positioning body is provided with a limiting cooperation mechanism. When the positioning pin is in the removal position, the positioning pin can be held in the removal position through the limiting cooperation of the limiting mechanism and the limiting cooperation mechanism.

2. The lifting and positioning structure according to claim 1, wherein: The limiting mechanism includes a first limiting platform with a higher height and a second limiting platform with a lower height, and the limiting cooperation mechanism includes a first limiting groove with a deeper depth and a second limiting groove with a shallower depth. When the positioning pin is in the positioning position, the first limiting platform is in interference fit with the first limiting groove and the second limiting platform is in interference fit with the second limiting groove; when the positioning pin is in the removal position, rotate the knob to make the first limiting platform correspond to the second limiting groove and the second limiting platform correspond to the first limiting groove, and after loosening the knob, the first limiting platform abuts against the second limiting groove to hold the positioning pin in the removal position.

3. The lifting and positioning structure according to claim 2, characterized in that: There are two first limiting platforms and two second limiting platforms, and they are arranged staggeredly. There are two first limiting grooves and two second limiting grooves, and they are arranged staggeredly.

4. A lifting and positioning structure according to claim 2, characterized in that: The wall of the movable cavity is provided with a first anti-detachment step, and the outer periphery of the positioning pin is provided with a second anti-detachment step that can be in limiting cooperation with the first anti-detachment step.

5. The lifting and positioning structure according to claim 1, wherein: The positioner further includes a positioning elastic member, and both ends of the positioning elastic member are respectively connected to the positioning pin and the wall of the movable cavity.

6. The lifting and positioning structure according to claim 5, wherein: The positioning elastic member is a spring.

7. The lifting and positioning structure according to claim 1, wherein: The inner end face of the knob is provided with a fixing screw hole, and the head end of the positioning pin is in screw connection with the fixing screw hole.

8. A lifting and positioning structure according to claim 1, characterized in that: The inner end of the positioning body is provided with a connecting head, and the connecting head extends into the mounting hole and is in screw connection with the mounting hole.

9. A lifting rod, characterized in that: It applies the lifting and positioning structure according to any one of claims 1 to 8.

10. A lifting frame, characterized in that: It applies the lifting and positioning structure according to any one of claims 1 to 8.

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