CN213116999U - Telescopic rod - Google Patents
Telescopic rod Download PDFInfo
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- CN213116999U CN213116999U CN202021338479.7U CN202021338479U CN213116999U CN 213116999 U CN213116999 U CN 213116999U CN 202021338479 U CN202021338479 U CN 202021338479U CN 213116999 U CN213116999 U CN 213116999U
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- 238000005096 rolling process Methods 0.000 claims abstract description 55
- 230000000712 assembly Effects 0.000 claims abstract description 24
- 238000000429 assembly Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 28
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Abstract
The utility model relates to a telescopic rod, which comprises more than two tubular rod sections which are mutually sleeved, wherein a first rod section with larger diameter is sleeved on a second rod section with smaller diameter, and the second rod section is vertically arranged with the first rod section and is vertically communicated with the first rod section; the second rod section can be retracted downwards into the first rod section or extended upwards out of the first rod section; a limiting sleeve is arranged in the first rod section, clings to the inner wall of the first rod section and is fixedly connected with the upper end part of the first rod section; the second rod section can be vertically moved and is positioned in the limiting sleeve; a plurality of first rolling assemblies capable of rolling are arranged on the side wall of the limiting sleeve, and the first rolling assemblies are sequentially arranged along the circumferential direction of the side wall of the limiting sleeve; the plurality of first rolling assemblies are tightly attached to the inner wall of the first rod section. The utility model can lengthen the force arm, prevent the second rod section from shaking relative to the first rod section, and improve the stability; the connection strength can be improved; meanwhile, the clearance between the first rod section and the second rod section can be eliminated, and the friction force in the relative movement process is reduced.
Description
Technical Field
The utility model relates to a telescopic link technical field, particularly, in particular to telescopic link.
Background
Among the prior art, application number is 201821768856.3's a telescopic link, it includes the telescopic link body, the telescopic link body includes outer telescopic link, interior telescopic link and lead screw, wherein: the inner telescopic rod and the outer telescopic rod are both arranged in a hollow mode, the outer diameter of the inner telescopic rod is smaller than the inner diameter of the outer telescopic rod, the bottom of the outer telescopic rod is closed, the top end of the outer telescopic rod is opened, the inner telescopic rod is arranged in the outer telescopic rod, the top end of the inner telescopic rod penetrates through the top end opening of the outer telescopic rod and extends upwards, the bottom end of the inner telescopic rod is in threaded connection with the lead screw through an installation part, a stepping motor is arranged at the inner bottom of the outer telescopic rod, an output shaft at the upper end of the stepping motor is fixedly connected with the bottom of the lead screw through a coupler, and the lead screw is driven by the stepping motor to rotate to ascend or descend, so that the inner telescopic rod is driven to ascend or descend. As is clear from the above description, the conventional techniques have the following disadvantages: the telescopic rod is easy to shake after being stretched, and the connection strength is poor; it is necessary to solve this problem.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, an object of the utility model is to provide a make the arm of force extension, can prevent to rock, promote stability and joint strength's telescopic link.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a telescopic rod comprises more than two tubular rod sections which are sleeved together, wherein a first rod section with a larger diameter is sleeved on a second rod section with a smaller diameter, and the second rod section is vertically arranged with the first rod section and is communicated with the first rod section up and down; the second bar section can be retracted downwards into the first bar section or extended upwards out of the first bar section; a limiting sleeve is arranged in the first rod section, is tightly attached to the inner wall of the first rod section and is fixedly connected with the upper end part of the first rod section; the second rod section can vertically move and is positioned in the limiting sleeve; a plurality of first rolling assemblies capable of rolling are arranged on the side wall of the limiting sleeve, and the first rolling assemblies are sequentially arranged along the circumferential direction of the side wall of the limiting sleeve; the first rolling assemblies are tightly attached to the inner wall of the first rod section.
The utility model has the advantages that: when the second rod section stretches relative to the first rod section, the first rolling assembly enables the force arm to be lengthened, the second rod section can be prevented from shaking relative to the first rod section, and stability is improved; the connecting strength of the first rod section and the second rod section can be improved.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, a buckle mechanism is arranged in the first rod section, is positioned at the lower end of the second rod section and is fixedly connected with the second rod section; when the lower end part of the second rod section extends out of the upper end part of the first rod section, the lower end part of the limiting sleeve limits the buckle mechanism;
the side wall of the upper end part of the first rod section is provided with a limiting hole, and when the lower end part of the second rod section moves to the upper end part of the first rod section, the end part of the buckle mechanism is embedded into the limiting hole.
The beneficial effect of adopting the further scheme is that: the clamping mechanism is limited by the limiting sleeve, so that the extension of the second rod section is limited, and the second rod section is prevented from being separated from the first rod section; the end part of the buckle mechanism is embedded into the limiting hole, the second rod section is fixedly positioned relative to the extension length of the first rod section, and the connection stability of the first rod section and the second rod section is improved.
Further, the buckling mechanism comprises a base, a first clamping block and a second clamping block, a lower cavity is arranged in the base, an opening is formed in one side, close to the limiting hole, of the lower cavity, and the first clamping block is horizontally arranged at the opening in the lower cavity; a horizontally arranged spring is arranged in the lower cavity, one end of the spring is fixedly connected with the inner wall of the lower cavity, and the other end of the spring is fixedly connected with the first clamping block; the spring is in a compressed state, and when the lower end part of the second rod section moves to the upper end part of the first rod section, the spring drives the end part of the first clamping block to be embedded into the limiting hole;
an upper cavity is arranged in the base, the upper cavity is positioned above the lower cavity, and a first through hole for communicating the upper cavity with the lower cavity is formed in the lower end of the upper cavity; the second fixture block is vertically arranged in the upper cavity, the lower end part of the second fixture block is positioned in the first through hole, and the second fixture block can vertically penetrate through the first through hole, extend into the lower cavity and be embedded into the first fixture block;
the first rod section and the second rod section are internally provided with a pressure rod, the upper end part of the pressure rod in the second rod section extends out of the second rod section, and the lower end part of the pressure rod is connected with the second clamping block; after the upper end part of the pressure rod is pressed, the pressure rod vertically moves downwards, and the pressure rod drives the second clamping block to vertically move downwards; and in the process that the second clamping block is vertically and downwards embedded into the first clamping block, the first clamping block is driven to compress the spring, and meanwhile, the end part of the first clamping block exits from the limiting hole.
The beneficial effect of adopting the further scheme is that: utilize buckle mechanism to be convenient for fix the second rod section after stretching out, promote the connection stability of first rod section and second rod section.
Further, the lower end surface of the second fixture block is a first inclined surface; the upper end of the first clamping block is provided with a groove body, the groove bottom of the groove body is a second inclined plane matched with the first inclined plane, and the lower end face of the second clamping block is abutted to the groove bottom of the groove body.
The beneficial effect of adopting the further scheme is that: the lower end of the second clamping block presses the bottom of the groove body downwards to drive the first clamping block to move transversely; simple structure, high transmission efficiency and long service life.
Furthermore, at least one protruding limiting block is arranged on the side wall of the second clamping block, and the limiting block is fixedly connected with the second clamping block; a second through hole communicated with the upper cavity is formed in the upper end face of the base, and the upper end part of the second fixture block is located in the second through hole; the radial size of the second fixture block where the limiting block is located is larger than the radial sizes of the first through hole and the second through hole, and the second fixture block is limited by the limiting block to vertically move in the upper cavity.
The beneficial effect of adopting the further scheme is that: the limiting block can enable the second clamping block to be in limiting vertical movement in the upper cavity, and the clamping device is simple in structure and long in service life.
Furthermore, a plurality of second rolling assemblies are arranged on the outer side wall of the base and are sequentially arranged along the circumferential direction of the side wall of the base; and the plurality of second rolling assemblies are tightly attached to the inner wall of the first rod section.
The beneficial effect of adopting the further scheme is that: the second rolling component is matched with the first rolling component, so that the force arm can be further lengthened, the second bar section can be prevented from shaking relative to the first bar section, and the stability is stronger.
Further, the second rolling assembly comprises a plurality of second roller pins, and the plurality of second roller pins are rotatably arranged on the outer side wall of the base; the second rolling needles are sequentially arranged along the axial direction of the first rod section; and the second rolling needles are tightly attached to the inner wall of the first rod section.
The beneficial effect of adopting the further scheme is that: a plurality of second kingpins are arranged along the axial direction of the first rod joint in sequence, so that the force arm is lengthened, the second rod joint can be prevented from shaking relative to the first rod joint, and the stability is improved.
Further, the first rolling assembly comprises a plurality of first roller pins, and the plurality of first roller pins are rotatably arranged in the limit sleeve; the first rolling needles are sequentially arranged along the axial direction of the first rod section; the first rolling needles are tightly attached to the side wall of the second rod section.
The beneficial effect of adopting the further scheme is that: a plurality of first kingpins are arranged along the axial direction of the first rod joint in sequence, so that the force arm is lengthened, the second rod joint can be prevented from shaking relative to the first rod joint, and the stability is improved.
Drawings
Fig. 1 is a front view of the telescopic rod of the present invention;
fig. 2 is a schematic view of a front view structure of a telescopic rod of the present invention;
fig. 3 is a schematic side view of the telescopic rod of the present invention;
fig. 4 is the structure split schematic diagram of the stop collar, the first rolling component, the buckle mechanism and the second rolling component of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a first rod section 1.1 and a limiting hole;
2. a second bar section;
3. a limiting sleeve;
4. a first rolling component 4.1, a first roller pin;
5. the clamping mechanism comprises a clamping mechanism 5.1, a base 5.2, a first clamping block, 5.3, a second clamping block, 5.4, a lower cavity, 5.5, a spring, 5.6, an upper cavity, 5.7, a groove body, 5.8 and a limiting block;
6. a second rolling assembly, 6.1, a second needle roller;
7. a pressure lever.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 3, a telescopic rod comprises more than two tubular rod sections which are sleeved together, a first rod section 1 with a larger diameter is sleeved on a second rod section 2 with a smaller diameter, and the second rod section 2 and the first rod section 1 are vertically arranged and are vertically communicated; the second rod section 2 can be retracted downwards into the first rod section 1 or extended upwards out of the first rod section 1; a limiting sleeve 3 is arranged in the first rod section 1, and the limiting sleeve 3 is tightly attached to the inner wall of the first rod section 1 and is fixedly connected with the upper end part of the first rod section 1; the second rod section 2 can be vertically moved in the limiting sleeve 3; a plurality of first rolling assemblies 4 capable of rolling are arranged on the side wall of the limiting sleeve 3, and the first rolling assemblies 4 are sequentially arranged along the circumferential direction of the side wall of the limiting sleeve 3; the first rolling assemblies 4 are tightly attached to the inner wall of the first bar section 1.
The plurality of first rolling assemblies 4 on the limiting sleeve 3 are sequentially arranged along the radial direction of the limiting sleeve 3, and when the second bar section 2 stretches relative to the first bar section 1, the first rolling assemblies 4 enable the force arm to be lengthened, so that the second bar section 2 can be prevented from shaking relative to the first bar section 1, and the stability is improved; friction can be reduced, so that the second rod section 2 can be more conveniently stretched relative to the first rod section 1; the outer wall of the first rod section 1 is tightly attached through the limiting sleeve 3 and the first rolling assemblies 4, so that the connection strength of the first rod section 1 and the second rod section 2 can be improved.
In the above embodiment, a fastening mechanism 5 is disposed in the first bar section 1, and the fastening mechanism 5 is located at the lower end of the second bar section 2 and is fixedly connected to the second bar section 2; when the lower end part of the second rod section 2 extends out of the upper end part of the first rod section 1, the lower end part of the limiting sleeve 3 limits the buckle mechanism 5;
the side wall of the upper end part of the first rod section 1 is provided with a limiting hole 1.1, and when the lower end part of the second rod section 2 moves to the upper end part of the first rod section 1, the end part of the buckle mechanism 5 is embedded into the limiting hole 1.1.
The second rod section 2 is connected with the buckle mechanism 5, and the limit sleeve 3 is utilized to limit the buckle mechanism 5, so that the extension of the second rod section 2 is limited, and the second rod section 2 is prevented from being separated from the first rod section 1; still utilize buckle mechanism 5's tip embedding in spacing hole 1.1, fix a position second rod festival 2 relative first rod festival 1's length of stretching out, promote the connection stability of first rod festival 1 and second rod festival 2.
In the above embodiment, the fastening mechanism 5 includes a base 5.1, a first fixture block 5.2 and a second fixture block 5.3, a lower cavity 5.4 is provided in the base 5.1, an opening is provided at a side of the lower cavity 5.4 close to the limiting hole 1.1, and the first fixture block 5.2 is horizontally disposed at the opening in the lower cavity 5.4; a horizontally arranged spring 5.5 is arranged in the lower cavity 5.4, one end of the spring 5.5 is fixedly connected with the inner wall of the lower cavity 5.4, and the other end of the spring is fixedly connected with the first fixture block 5.2; the spring 5.5 is in a compressed state, and when the lower end part of the second rod section 2 moves to the upper end part of the first rod section 1, the spring 5.5 drives the end part of the first clamping block 5.2 to be embedded into the limiting hole 1.1;
an upper cavity 5.6 is arranged in the base 5.1, the upper cavity 5.6 is positioned above the lower cavity 5.4, and a first through hole communicated with the upper cavity 5.6 and the lower cavity 5.4 is arranged at the lower end of the upper cavity 5.6; the second fixture block 5.3 is vertically arranged in the upper cavity 5.6, the lower end part of the second fixture block 5.3 is positioned in the first through hole, and the second fixture block 5.3 can vertically penetrate through the first through hole to extend into the lower cavity 5.4 and be embedded into the first fixture block 5.2;
a pressure rod 7 is arranged in the first rod section 1 and the second rod section 2, the upper end part of the pressure rod 7 in the second rod section 2 extends out of the second rod section 2, and the lower end part of the pressure rod 7 is connected with the second fixture block 5.3; after the upper end part of the pressure lever 7 is pressed, the pressure lever 7 vertically moves downwards, and the pressure lever 7 drives the second clamping block 5.3 to vertically move downwards; the second clamping block 5.3 is vertically downwards embedded into the first clamping block 5.2, so that the first clamping block 5.2 is driven to compress the spring 5.5, and meanwhile, the end part of the first clamping block 5.2 is withdrawn from the limiting hole 1.1.
After the end of the first fixture block 5.2 exits the limiting hole 1.1, the second rod section 2 can be retracted into the first rod section 1, the second rod section 2 is retracted into the first rod section 1, the second rod section 2 drives the fastening mechanism 5 to vertically move downwards in the first rod section 1, the fastening mechanism 5 drives the compression bar 7 in the first rod section 1 to press downwards, and the telescopic rod is retracted by analogy.
The upper end of the second rod section 2 is provided with a plurality of rod sections with reduced diameters, the lower end of the first rod section 1 is provided with a plurality of rod sections with increased diameters, and two adjacent rod sections are sleeved; a pressure rod 7 in the second rod section 2 is abutted with a buckle mechanism 5 in the upper end rod section, and the pressure rod 7 in the top end rod section extends out of the top end rod section; the pressure lever 7 in the first bar section 1 is abutted with the buckling mechanism 5 in the lower bar section.
The second fixture block 5.3 moves upwards to a set position, and the second fixture block 5.3 is separated from the first fixture block 5.2; the spring 5.5 drives the first clamping block 5.2 to move transversely, and the first clamping block 5.2 is embedded into the limiting hole 1.1 or props against the inner wall of the first clamping block 5.2;
when the lower end part of the second rod section 2 moves to the upper end part of the first rod section 1, the second fixture block 5.3 is vertically embedded into the first fixture block 5.2 downwards to drive the first fixture block 5.2 to compress the spring 5.5, the spring 5.5 drives the first fixture block 5.2 to move transversely in the compression process, and the end part of the first fixture block 5.2 exits from the limiting hole 1.1;
utilize buckle mechanism 5 to be convenient for fix the second bar section 2 after stretching out, promote the connection stability of first bar section 1 and second bar section 2.
In the above embodiment, the lower end surface of the second fixture block 5.3 is a first inclined surface; the upper end of the first fixture block 5.2 is provided with a groove body 5.7, the groove bottom of the groove body 5.7 is a second inclined plane matched with the first inclined plane, and the lower end face of the second fixture block 5.3 is abutted to the groove bottom of the groove body 5.7.
When the second fixture block 5.3 vertically moves downwards, the lower end face of the second fixture block 5.3 presses downwards the bottom of the groove body 5.7, so that the first fixture block 5.2 can be driven to move transversely; simple structure, high transmission efficiency and long service life.
In the above embodiment, at least one protruding limiting block 5.8 is disposed on the side wall of the second fixture block 5.3, and the limiting block 5.8 is fixedly connected to the second fixture block 5.3; a second through hole communicated with the upper cavity 5.6 is formed in the upper end face of the base 5.1, and the upper end part of the second fixture block 5.3 is located in the second through hole; the radial size of the second fixture block 5.3 where the limiting block 5.8 is located is larger than the radial sizes of the first through hole and the second through hole, and the second fixture block 5.3 is limited by the limiting block 5.8 to vertically move in the upper cavity 5.6.
Two stopper 5.8 enable second fixture block 5.3 and be in spacing vertical removal in last cavity 5.6, simple structure, long service life.
In the above embodiment, a plurality of second rolling assemblies 6 are disposed on the outer side wall of the base 5.1, and the plurality of second rolling assemblies 6 are sequentially arranged along the circumferential direction of the side wall of the base 5.1; the second rolling assemblies 6 are tightly attached to the inner wall of the first bar section 1.
When the second bar section 2 stretches relative to the first bar section 1, the force arm is lengthened through the plurality of second rolling assemblies 6, so that the second bar section 2 can be prevented from shaking relative to the first bar section 1, and the stability is improved; friction can be reduced, so that the second rod section 2 can be more conveniently stretched relative to the first rod section 1; the second rolling component 6 is matched with the first rolling component 4, so that the force arm can be further lengthened, the second bar section 2 can be prevented from shaking relative to the first bar section 1, and the stability is stronger.
In the above embodiment, the second rolling assembly 6 includes a plurality of second roller pins 6.1, and each of the plurality of second roller pins 6.1 is rotatably disposed on an outer side wall of the base 5.1; a plurality of second roller pins 6.1 are arranged in sequence in the axial direction of the first rod section 1; the second roller pins 6.1 are all tightly attached to the inner wall of the first rod section 1.
When the first rod section 1 and the second rod section 2 are square tubes, the second rolling assembly 6 is composed of a plurality of second roller pins 6.1, and the plurality of second roller pins 6.1 are sequentially arranged along the axial direction of the first rod section 1, so that the force arm is lengthened, the second rod section 2 can be prevented from shaking relative to the first rod section 1, and the stability is improved;
when first rod festival 1 and second rod festival 2 all were the pipe, second rolling component 6 comprises a plurality of second balls, and a plurality of second balls are arranged in proper order along the axial of first rod festival 1 for the arm of force extension can prevent that second rod festival 2 from rocking, promotes stability relative first rod festival 1.
In the above embodiment, the first rolling assembly 4 comprises a plurality of first rolling pins 4.1, and a plurality of first rolling pins 4.1 are all rotatably arranged in the stop collar 3; a plurality of first roller pins 4.1 are arranged in sequence along the axial direction of the first rod section 1; the first roller pins 4.1 are all tightly attached to the side wall of the second bar section 2.
When the first rod section 1 and the second rod section 2 are square tubes, the first rolling assembly 4 is composed of a plurality of first roller pins 4.1, and the plurality of first roller pins 4.1 are sequentially arranged along the axial direction of the first rod section 1, so that the force arm is lengthened, the second rod section 2 can be prevented from shaking relative to the first rod section 1, and the stability is improved;
when first rod section 1 and second rod section 2 all were the pipe, first rolling subassembly 4 comprises a plurality of first balls, and a plurality of first balls are arranged in proper order along the axial of first rod section 1 for the arm of force extension can prevent that second rod section 2 from rocking, promotes stability relatively first rod section 1.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A telescopic rod comprises more than two tubular rod sections which are sleeved together, wherein a first rod section (1) with a larger diameter is sleeved on a second rod section (2) with a smaller diameter, and the second rod section (2) and the first rod section (1) are vertically arranged and are communicated up and down; the second rod section (2) can be retracted downwards into the first rod section (1) or extend upwards out of the first rod section (1); the method is characterized in that: a limiting sleeve (3) is arranged in the first rod section (1), and the limiting sleeve (3) is tightly attached to the inner wall of the first rod section (1) and is fixedly connected with the upper end part of the first rod section (1); the second rod section (2) can be vertically moved in the limiting sleeve (3); a plurality of first rolling assemblies (4) capable of rolling are arranged on the side wall of the limiting sleeve (3), and the first rolling assemblies (4) are sequentially arranged along the circumferential direction of the side wall of the limiting sleeve (3); the first rolling assemblies (4) are tightly attached to the inner wall of the first rod section (1) and the outer wall of the second rod section (2).
2. A telescopic rod according to claim 1, characterized in that: a buckle mechanism (5) is arranged in the first rod section (1), and the buckle mechanism (5) is positioned at the lower end of the second rod section (2) and is fixedly connected with the second rod section (2); when the lower end part of the second rod section (2) extends out of the upper end part of the first rod section (1), the lower end part of the limiting sleeve (3) limits the buckle mechanism (5);
the side wall of the upper end part of the first rod section (1) is provided with a limiting hole (1.1), when the lower end part of the second rod section (2) moves to the upper end part of the first rod section (1), the end part of the buckle mechanism (5) is embedded into the limiting hole (1.1).
3. A telescopic rod according to claim 2, characterized in that: the buckling mechanism (5) comprises a base (5.1), a first clamping block (5.2) and a second clamping block (5.3), a lower cavity (5.4) is arranged in the base (5.1), an opening is formed in one side, close to the limiting hole (1.1), of the lower cavity (5.4), and the first clamping block (5.2) is horizontally arranged at the opening in the lower cavity (5.4); a horizontally arranged spring (5.5) is arranged in the lower cavity (5.4), one end of the spring (5.5) is fixedly connected with the inner wall of the lower cavity (5.4), and the other end of the spring is fixedly connected with the first clamping block (5.2); the spring (5.5) is in a compressed state, and when the lower end part of the second rod section (2) moves to the upper end part of the first rod section (1), the spring (5.5) drives the end part of the first clamping block (5.2) to be embedded into the limiting hole (1.1);
an upper cavity (5.6) is arranged in the base (5.1), the upper cavity (5.6) is positioned above the lower cavity (5.4), and a first through hole which is communicated with the upper cavity (5.6) and the lower cavity (5.4) is arranged at the lower end of the upper cavity (5.6); the second fixture block (5.3) is vertically arranged in the upper cavity (5.6), the lower end part of the second fixture block (5.3) is positioned in the first through hole, and the second fixture block (5.3) can vertically penetrate through the first through hole to extend into the lower cavity (5.4) and is embedded into the first fixture block (5.2);
a pressure rod (7) is arranged in the first rod section (1) and the second rod section (2), the upper end part of the pressure rod (7) in the second rod section (2) extends out of the second rod section (2), and the lower end part of the pressure rod (7) is connected with the second clamping block (5.3); after the upper end part of the pressure lever (7) is pressed, the pressure lever (7) vertically moves downwards, and the pressure lever (7) drives the second clamping block (5.3) to vertically move downwards; the second clamping block (5.3) is vertically downwards embedded into the first clamping block (5.2) in the process, the first clamping block (5.2) is driven to compress the spring (5.5), and meanwhile the end part of the first clamping block (5.2) is withdrawn from the limiting hole (1.1).
4. A telescopic rod according to claim 3, characterized in that: the lower end surface of the second fixture block (5.3) is a first inclined surface; the upper end of the first clamping block (5.2) is provided with a groove body (5.7), the groove bottom of the groove body (5.7) is a second inclined plane matched with the first inclined plane, and the lower end face of the second clamping block (5.3) is abutted to the groove bottom of the groove body (5.7).
5. A telescopic rod according to claim 3, characterized in that: at least one protruding limiting block (5.8) is arranged on the side wall of the second clamping block (5.3), and the limiting block (5.8) is fixedly connected with the second clamping block (5.3); a second through hole communicated with the upper cavity (5.6) is formed in the upper end face of the base (5.1), and the upper end part of the second fixture block (5.3) is located in the second through hole; the radial size of the position of a second clamping block (5.3) where the limiting block (5.8) is located is larger than the radial sizes of the first through hole and the second through hole, and the second clamping block (5.3) is limited in the upper cavity (5.6) through the limiting block (5.8) to vertically move.
6. A telescopic rod according to claim 3, characterized in that: a plurality of second rolling assemblies (6) are arranged on the outer side wall of the base (5.1), and the second rolling assemblies (6) are sequentially arranged along the circumferential direction of the side wall of the base (5.1); the second rolling assemblies (6) are tightly attached to the inner wall of the first bar section (1).
7. The telescopic rod according to claim 6, wherein: the second rolling assembly (6) comprises a plurality of second roller pins (6.1), and the second roller pins (6.1) are rotatably arranged on the outer side wall of the base (5.1); a plurality of second roller pins (6.1) are arranged in sequence along the axial direction of the first rod section (1); the second rolling needles (6.1) are tightly attached to the inner wall of the first rod section (1).
8. A telescopic rod according to any one of claims 1 to 7, characterized in that: the first rolling assembly (4) comprises a plurality of first roller pins (4.1), and the plurality of first roller pins (4.1) are rotatably positioned in the stop collar (3); a plurality of first roller pins (4.1) are arranged in sequence along the axial direction of the first rod section (1); the first rolling needles (4.1) are tightly attached to the side wall of the second rod section (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021338479.7U CN213116999U (en) | 2020-07-09 | 2020-07-09 | Telescopic rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021338479.7U CN213116999U (en) | 2020-07-09 | 2020-07-09 | Telescopic rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213116999U true CN213116999U (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021338479.7U Expired - Fee Related CN213116999U (en) | 2020-07-09 | 2020-07-09 | Telescopic rod |
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| CN (1) | CN213116999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113602340A (en) * | 2021-07-09 | 2021-11-05 | 好孩子儿童用品有限公司 | Telescopic link and children article |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113602340A (en) * | 2021-07-09 | 2021-11-05 | 好孩子儿童用品有限公司 | Telescopic link and children article |
| CN113602340B (en) * | 2021-07-09 | 2023-01-31 | 好孩子儿童用品有限公司 | Telescopic link and children article |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210504 |