CN109315988B - Telescopic self-locking device and product bracket using same - Google Patents
Telescopic self-locking device and product bracket using same Download PDFInfo
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- CN109315988B CN109315988B CN201811302022.8A CN201811302022A CN109315988B CN 109315988 B CN109315988 B CN 109315988B CN 201811302022 A CN201811302022 A CN 201811302022A CN 109315988 B CN109315988 B CN 109315988B
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- 235000020971 citrus fruits Nutrition 0.000 description 5
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Abstract
The invention discloses a telescopic self-locking device and a product bracket using the same, wherein the device comprises a top expansion joint, a bottom expansion joint, a rotating cylinder, a middle bearing spring and at least one middle expansion joint, the top expansion joint, the middle expansion joint and the bottom expansion joint are movably connected from top to bottom, the rotating cylinder is rotatably arranged in the bottom expansion joint, the middle bearing spring is arranged between the top expansion joint and the bottom expansion joint and penetrates through all the middle expansion joints and the rotating cylinder, the bottom of the top expansion joint is provided with a plurality of V-shaped driving teeth and driving clamping blocks, the outer wall of the lower end of the rotating cylinder is provided with a plurality of lower driving inclined blocks, and the outer wall of the upper end of the rotating cylinder is provided with a plurality of groups of upper driving inclined blocks consisting of a first upper driving inclined block and a second upper driving inclined block. The telescopic self-locking device has the advantages of simple structure, stable and reliable operation, telescopic and self-locking functions, capability of extending and supporting the product by pressing and realizing telescopic self-locking by pressing, simple and convenient operation, convenient use by users and wide application range.
Description
Technical Field
The invention relates to the technical field of supporting devices, in particular to a telescopic self-locking device and a product bracket using the same.
Background
In some applications, the product needs to be lifted by a support device to facilitate the user's handling. Such as: in the current small green citrus tea packaging technology, people can place a small green citrus in the placing groove of the packaging box, so that the packaging is high-grade fashion, but after the small green citrus is placed in the placing groove of the packaging box, users often are inconvenient to take out the small green citrus because the notch is narrow and deep, so that a supporting device capable of supporting and ejecting the small green citrus from the placing groove of the packaging box needs to be designed. Of course, in the use of other products, in order to facilitate the operation of the user, it is also necessary to design a product supporting device.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the telescopic self-locking device which has the advantages of simple structure, convenient use by users, stable and reliable operation and telescopic and self-locking functions and the product bracket using the device.
In order to achieve the above object, a first aspect of the present invention provides a telescopic self-locking device, comprising a top expansion joint, a bottom expansion joint, a rotating cylinder, a middle bearing spring and at least one middle expansion joint, wherein the top expansion joint is movably installed inside the middle expansion joint, the middle expansion joint is movably installed inside the bottom expansion joint, the top expansion joint, the middle expansion joint and the bottom expansion joint are sequentially connected from top to bottom, expansion joint anti-disengaging clamping positions are respectively arranged between two adjacent expansion joints, a rotating cylinder installation part is arranged at the inner bottom end of the bottom expansion joint, the rotating cylinder installation part is inserted inside the rotating cylinder, a rotating cylinder anti-disengaging clamping position is arranged between the rotating cylinder installation part and the rotating cylinder, the rotating cylinder can rotate relative to the bottom expansion joint, the middle bearing spring is installed between the top expansion joint and the bottom expansion joint and penetrates through all the middle expansion joint, the bottom of the top expansion joint is provided with a circle of continuously arranged V-shaped driving teeth and a plurality of driving clamping blocks which are arranged on the inner side surfaces of corresponding driving teeth and protrude inwards, the inner side surfaces of the driving teeth are respectively arranged, the driving blocks are respectively provided with a plurality of driving blocks which are respectively arranged at the bottom of the driving blocks, the driving blocks are respectively provided with a plurality of inclined surfaces which are respectively matched with the upper driving blocks and the lower driving blocks, the driving blocks are respectively provided with the upper inclined surfaces and the upper driving blocks and the lower driving blocks are respectively provided with the corresponding driving blocks, the bottom of first drive sloping block is equipped with the second drive inclined plane that is used for with drive fixture block inclined plane sliding fit's drive fixture block, the bottom of second drive sloping block is equipped with the third drive inclined plane that is used for with drive fixture block inclined plane sliding fit's of drive fixture block, is formed with between the first drive sloping block and the second drive sloping block that goes up in the drive sloping block of every group upper end drive sloping block and is used for with the drive fixture block screens cooperation of top telescopic joint in order to restrict the locking notch of top telescopic joint upward movement, the lower drive sloping block is located adjacent two sets of upper end drive sloping block's clearance below.
Preferably, the bottom of each lower driving inclined block of the rotating cylinder is respectively provided with a hemispherical sliding convex body which is used for facilitating the rotation of the rotating cylinder.
Preferably, a rotary cylinder bearing spring is arranged in the rotary cylinder, the rotary cylinder bearing spring is sleeved on the outer wall of the rotary cylinder installation component, one end of the rotary cylinder bearing spring abuts against the inner bottom end of the bottom expansion joint, and the other end of the rotary cylinder bearing spring abuts against the inner wall of the rotary cylinder.
Preferably, the outer walls of the top expansion joint and all the middle expansion joints are respectively provided with a longitudinal limit guide block, and the inner walls of the bottom expansion joint and all the middle expansion joints are respectively provided with a longitudinal limit guide groove for the corresponding longitudinal limit guide blocks to be inserted.
Preferably, the two middle expansion joints are respectively a first middle expansion joint and a second middle expansion joint, and the first middle expansion joint is movably installed in the second middle expansion joint.
The second aspect of the invention provides a telescopic self-locking product bracket, which comprises a first bracket piece and the telescopic self-locking device according to the technical scheme, wherein the first bracket piece is arranged at the top of a top telescopic joint of the telescopic self-locking device.
The second aspect of the invention provides a telescopic self-locking product bracket, which comprises a second supporting plate, a base, a bearing auxiliary spring and the telescopic self-locking device according to the technical scheme, wherein the second supporting plate is arranged at the top of a top expansion joint of the telescopic self-locking device, the base is arranged at the bottom of a bottom expansion joint of the telescopic self-locking device, and the bearing auxiliary spring is arranged between the second supporting plate and the base and is positioned at the periphery of the telescopic self-locking device.
Preferably, the telescopic self-locking product bracket further comprises a bulletproof skewer, wherein a skewer mounting seat is arranged on the base, the bulletproof skewer is transversely movably mounted in the skewer mounting seat, and one end of the bulletproof skewer can penetrate through holes formed in the side walls of the bottom expansion joint and all middle expansion joints and is inserted below the top expansion joint so as to prevent the top expansion joint from contacting with the lower driving inclined block of the rotating cylinder.
Compared with the prior art, the invention has the beneficial effects that:
The telescopic self-locking device has the advantages of simple structure, stable and reliable operation, telescopic and self-locking functions, capability of extending and supporting the product by pressing and realizing telescopic self-locking by pressing, simple and convenient operation, convenient use by users and wide application range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a retractable self-locking device according to an embodiment of the present invention in a sprung state;
FIG. 2 is an exploded view of a retractable self-locking device provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a retractable self-locking device provided by an embodiment of the present invention;
FIG. 4 is a schematic view of a top expansion joint according to an embodiment of the present invention;
FIG. 5 is a schematic view of a rotary drum according to an embodiment of the present invention;
FIG. 6 is a schematic view of a base expansion joint according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating the operation of the top telescopic joint and the rotary drum according to the embodiment of the present invention;
FIG. 8 is a diagram illustrating the operation of the driving latch and the rotary drum according to the embodiment of the present invention;
FIG. 9 is a schematic view of a retractable self-locking device according to an embodiment of the present invention in a retracted locked state;
FIG. 10 is a schematic view of a first retractable self-locking product carrier according to an embodiment of the present invention in a sprung position;
FIG. 11 is a schematic view of a second retractable self-locking product carrier according to an embodiment of the present invention in a sprung position;
FIG. 12 is an exploded view of a second retractable self-locking product carrier provided by an embodiment of the present invention;
Fig. 13 is a schematic structural view of a second retractable self-locking product holder according to an embodiment of the present invention in a retracted and locked state.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1,2 and 3, a first embodiment of the present invention provides a telescopic self-locking device, which includes a top expansion joint 1, a first middle expansion joint 2, a second middle expansion joint 3, a bottom expansion joint 4, a rotary cylinder 5, and a middle bearing spring 6, and the details of the components of the present embodiment are described below with reference to the accompanying drawings.
In this embodiment, the diameter of top telescopic joint 1, first middle part telescopic joint 2, second middle part telescopic joint 3, bottom telescopic joint 4 increases gradually, top telescopic joint 1, first middle part telescopic joint 2, second middle part telescopic joint 3 and bottom telescopic joint 4 connect gradually from last down, as shown in fig. 3, during the concrete installation, but top telescopic joint 1 movable mounting is in the inside of first middle part telescopic joint 2 about moving, but first middle part telescopic joint 2 movable mounting is in the inside of second middle part telescopic joint 3 about moving, but second middle part telescopic joint 3 movable mounting is in the inside of bottom telescopic joint 4 about moving, and be equipped with telescopic joint anticreep screens between two adjacent telescopic joints respectively, in order to prevent that two adjacent telescopic joints from taking place to break away.
Specifically, as shown in fig. 4, the top telescopic joint 1 is approximately in a bottle cap shape, the bottom of the top telescopic joint 1 is provided with a circle of continuously arranged V-shaped driving teeth 11 and a plurality of driving clamping blocks 12 located on the inner side surfaces of the corresponding driving teeth 11 and protruding inwards, the bottom of each driving clamping block 12 is respectively provided with a V-shaped surface 121 matched with the shape of the driving teeth 11, the top of each driving clamping block 12 is respectively provided with a driving clamping block inclined surface 122, and the driving clamping block inclined surfaces 122 can incline upwards clockwise. In this embodiment, six driving clamping blocks 12 may be preferably provided, the driving clamping blocks 12 are symmetrically arranged in the center, and one driving tooth 11 is spaced between two adjacent driving clamping blocks 12.
The outer wall of the lower end of the top expansion joint 1 is provided with expansion joint anti-drop clamping positions 13, and the outer wall of the top expansion joint 1 is respectively provided with a plurality of longitudinal limit guide blocks 14 which are arranged in a central symmetry manner.
As shown in fig. 2, the first middle expansion joint 2 and the second middle expansion joint 3 have substantially the same structure, are respectively in a circular ring shape, and the diameter of the second middle expansion joint 3 is larger than that of the first middle expansion joint 2. The upper end inner wall of the first middle telescopic joint 2 is provided with an telescopic joint anti-drop clamping position 21 matched with the telescopic joint anti-drop clamping position 13 of the top telescopic joint 1, the outer wall of the lower end of the first middle telescopic joint 2 is provided with an telescopic joint anti-drop clamping position 22, the outer wall of the first middle telescopic joint 2 is respectively provided with a plurality of longitudinal limit guide blocks 23 which are arranged in a central symmetry manner, the inner wall of the first middle telescopic joint 2 is respectively provided with a plurality of longitudinal limit guide grooves 24 which are arranged in a central symmetry manner, and the longitudinal limit guide blocks 14 of the top telescopic joint 1 move up and down in the longitudinal limit guide grooves 24.
The upper end inner wall of the second middle telescopic joint 3 is provided with an telescopic joint anti-drop clamping position 31 matched with the telescopic joint anti-drop clamping position 22 of the first middle telescopic joint 2, the outer wall of the lower end of the second middle telescopic joint 3 is provided with an telescopic joint anti-drop clamping position 32, the outer wall of the second middle telescopic joint 3 is respectively provided with a plurality of longitudinal limit guide blocks 33 which are arranged in a central symmetry manner, the inner wall of the second middle telescopic joint 3 is respectively provided with a plurality of longitudinal limit guide grooves 34 which are arranged in a central symmetry manner, and the longitudinal limit guide blocks 23 of the first middle telescopic joint 2 move up and down in the longitudinal limit guide grooves 34.
It should be noted that, according to the requirement of the telescopic height, the number of the middle telescopic joints can be increased or decreased appropriately, which is not limited by the embodiment.
As shown in fig. 5, the bottom expansion joint 4 is in an inverted bottle cap shape, the bottom end inside the bottom expansion joint 4 is provided with a circular tubular rotary drum mounting part 41 positioned at the center, the top of the rotary drum mounting part 41 is provided with a rotary drum anti-disengaging clamping position 42, the inner wall of the upper end of the bottom expansion joint 4 is provided with an expansion joint anti-disengaging clamping position 43 matched with the expansion joint anti-disengaging clamping position 32 of the second middle expansion joint 3, the inner wall of the bottom expansion joint 4 is respectively provided with a plurality of longitudinal limiting guide grooves 44 which are arranged in a central symmetry manner, and the longitudinal limiting guide blocks 33 of the second middle expansion joint 3 move up and down in the longitudinal limiting guide grooves 44.
As shown in fig. 3, the rotary cylinder attachment member 41 is inserted into the rotary cylinder 5, and the rotary cylinder 5 is rotatable with respect to the bottom expansion joint 4.
As shown in fig. 6, the main body of the rotary cylinder 5 is circular, the outer wall of the lower end of the rotary cylinder 5 is provided with a plurality of lower driving inclined blocks 51 protruding outwards, in this embodiment, the lower driving inclined blocks 51 may preferably be provided with six lower driving inclined blocks and are respectively arranged in a central symmetry manner, the top of each lower driving inclined block 51 is provided with a first driving inclined surface 511 for sliding matching with the corresponding driving tooth 11 and the driving clamping block 12, the first driving inclined surface 511 inclines upwards in a anticlockwise direction, the outer wall of the upper end of the rotary cylinder 5 is provided with a plurality of groups of upper driving inclined blocks 52, in this embodiment, the upper driving inclined blocks 52 may preferably be provided with six groups and are respectively arranged in a central symmetry manner, each group of upper driving inclined blocks 52 is respectively composed of a first upper driving inclined block 52a and a second upper driving inclined block 52b, the bottom of the first upper driving inclined block 52a is provided with a second driving inclined surface 521 for sliding matching with the driving clamping block inclined surface 122 of the driving clamping block 12, the bottom of the second upper driving inclined block 52b is provided with a third driving inclined surface 522 which is used for sliding fit with the driving inclined surface 122 of the driving inclined block 12, the second driving inclined surface 521 and the third driving inclined surface 522 incline upwards clockwise, a locking clamping groove 53 which is used for clamping fit with the driving inclined block 12 of the top telescopic joint 1 to limit the upward movement of the top telescopic joint 1 is formed between the first upper driving inclined block 52a and the second upper driving inclined block 52b in each group of upper driving inclined blocks 52, the locking clamping groove 53 is specifically formed by the height difference of the second driving inclined surface 521 and the third driving inclined surface 522, the lower driving inclined block 51 is positioned below the gaps 54 of the adjacent two groups of upper driving inclined blocks (namely, faces the gaps 54), the driving inclined block 12 of the top telescopic joint 1 can move downwards through the gaps 54 of the two groups of upper driving inclined blocks to contact the lower driving inclined block 51 of the rotary cylinder 5, or the top expansion joint 1 is separated from the rotary cylinder 5 by passing through the gaps 54 of the two groups of upper end driving inclined blocks to move upwards.
The upper end inner wall of the rotary drum 5 is provided with a rotary drum anti-falling clamping position 55 matched with the rotary drum anti-falling clamping position 42 of the rotary drum mounting part 41.
Preferably, in order to smooth the rotation of the rotating cylinder 5 and reduce friction, the bottom of each lower driving ramp 51 of the rotating cylinder 5 may be provided with a hemispherical sliding protrusion 512, respectively.
As shown in fig. 3, the intermediate load-bearing spring 6 is installed between the top telescopic joint 1 and the bottom telescopic joint 4 and passes through all the intermediate telescopic joints and the rotary drum 5, the upper end of the intermediate load-bearing spring 6 abuts against the inner top end of the top telescopic joint 1, and the lower end of the intermediate load-bearing spring 6 is inserted into the rotary drum mounting member 41 and abuts against the inner bottom end of the bottom telescopic joint 4.
In order to further smooth the rotation of the rotating cylinder 5 and reduce friction, the rotating cylinder supporting spring 7 can be further arranged in the rotating cylinder 5, the rotating cylinder supporting spring 7 is sleeved on the outer wall of the rotating cylinder mounting part 41, one end of the rotating cylinder supporting spring 7 abuts against the inner bottom end of the bottom telescopic joint 4, and the other end of the rotating cylinder supporting spring 7 abuts against the inner wall (namely, the rotating cylinder anti-falling clamping position 55) of the rotating cylinder 5 to jack up the rotating cylinder 5.
The working principle of the telescopic self-locking device is as follows:
If the initial state is the bouncing state, as shown in fig. 7 and 8, when the user presses the top telescopic joint 1 by hand to move downwards, the driving clamping block 12 of the top telescopic joint 1 can pass through the gaps 54 of the two groups of upper end driving inclined blocks to move downwards to contact with the lower driving inclined block 51 of the rotating cylinder 5, at this time, the driving clamping block 12 and the driving tooth 11 of the top telescopic joint 1 can slide with the first driving inclined surface 511 of the lower driving inclined block 51 corresponding to the rotating cylinder 5, so as to drive the rotating cylinder 5 to rotate anticlockwise by a preset angle (such as 30 degrees), after the user releases the hand, under the elastic action of the middle bearing spring 6, at this time, the driving clamping block inclined surface 122 at the top of the driving clamping block 12 of the top telescopic joint 1 can slide with the second driving inclined surface 521 of the first upper driving inclined block 52a, the driving clamping block 12 of the top telescopic joint 1 continues to rotate anticlockwise by a preset angle, at this time, the driving clamping block 12 of the top telescopic joint 1 can slide along the second driving inclined surface 521 is in the locking position groove 53 between the first upper driving inclined block 52a and the second upper driving inclined block 52b, and the telescopic joint can not be locked by the telescopic joint 5, as shown in the self-locking state 9.
When the user presses the top telescopic joint 1 again by hand to move the top telescopic joint 1 downwards, the driving clamping block 12 of the top telescopic joint 1 is separated from the locking clamping groove 53, the driving tooth 11 of the top telescopic joint 1 (the driving tooth is the driving tooth spaced between the two driving clamping blocks 12) can slide with the first driving inclined surface 511 of the lower driving inclined block 51 corresponding to the rotating cylinder 5, so that the rotating cylinder 5 is driven to continuously rotate a preset angle in the anticlockwise direction, after the user releases the hand, the top telescopic joint 1 can move upwards under the elastic action of the middle bearing spring 6, at the moment, the driving clamping block inclined surface 122 of the top of the driving clamping block 12 of the top telescopic joint 1 can slide with the third driving inclined surface 522 of the second upper driving inclined block 52b, the driving clamping block 12 of the top telescopic joint 1 continuously rotates a preset angle in the anticlockwise direction, the third driving inclined surface 522 of the top telescopic joint 1 slides to the gaps 54 of the two groups of upper driving inclined blocks, and passes through the gaps 54 of the two groups of upper driving inclined blocks to continuously move upwards, so that the top telescopic joint 1 gets rid of the rotating cylinder 5, and accordingly, the first middle part 2 and the second middle part 2 are driven to stretch up together, as shown in the figure 1. And (5) subsequent actions, so as to cycle.
Example two
Referring to fig. 10, a second embodiment of the present invention provides a telescopic self-locking product bracket, which includes a first supporting plate 8 and the telescopic self-locking device of the first embodiment, wherein the first supporting plate 8 is installed on the top of the top telescopic joint 1 of the telescopic self-locking device, and the telescopic self-locking device of the second embodiment has the same structure and principle as the telescopic self-locking device of the first embodiment, and is not repeated herein.
Example III
Referring to fig. 11, 12 and 13, a third embodiment of the present invention provides another telescopic self-locking product bracket, which comprises a second supporting plate 9, a base 10, three load-bearing auxiliary springs 15 and the telescopic self-locking device of the first embodiment, wherein the second supporting plate 9 is installed at the top of the top telescopic joint 1 of the telescopic self-locking device, the base 10 is installed at the bottom of the bottom telescopic joint 4 of the telescopic self-locking device, the three load-bearing auxiliary springs 15 are respectively installed between the second supporting plate 9 and the base 10 and are located at the periphery of the telescopic self-locking device, an upper spring positioning ring 91 is arranged at the bottom of the second supporting plate 9, and a lower spring positioning ring 102 is arranged at the top of the base 10.
Since the structure and principle of the telescopic self-locking device of the third embodiment are the same as those of the telescopic self-locking device of the first embodiment, the description thereof will not be repeated here.
The number of the load-bearing auxiliary springs 15 can be increased or decreased according to actual needs, which is not limited in this embodiment. The product carrier of the third embodiment has a greater bearing force than the product carrier of the second embodiment described above, which can hold up heavier products.
As a further improvement of the embodiment, the telescopic self-locking product bracket further comprises a bulletproof skewer 16, wherein the base 10 is provided with a skewer mounting seat 101, and the bulletproof skewer 16 is transversely movably arranged in a mounting groove of the skewer mounting seat 101.
When the product bracket is in a shrinkage locking state, the bulletproof skewer 16 can be pushed inwards, one end of the bulletproof skewer 16 can penetrate through the bottom expansion joint 4 and through holes formed in the side walls of all middle expansion joints to be inserted below the top expansion joint 1, so that the bulletproof skewer 16 can prevent the top expansion joint 1 from being contacted with the lower driving inclined block 51 of the rotating cylinder 5 downwards, the top expansion joint 1 cannot drive the rotating cylinder 5 to rotate, the top expansion joint 1 cannot be separated from the limitation of the rotating cylinder 5, and the product bracket cannot be sprung. The bulletproof skewer 16 is designed to prevent unnecessary bouncing of the product on the product bracket due to shaking caused by shaking of the product bracket in order to easily shake the product in transportation and the like, and the bulletproof skewer 16 can greatly improve the safety performance of the product bracket and is convenient for users to use.
In specific implementation, the product bracket of the second embodiment and the third embodiment can be applied to a product packaging box and placed in a product placing groove of the packaging box, so that a user can automatically hold up the product by only pressing the product, and the user can conveniently take out the product in the product placing groove. For example, the product bracket can be placed in the standing groove of the tea packaging box, one small green orange tea or the whole tea packaging can be placed at the top of the product bracket, and the user can hold the small green orange tea or the tea packaging can only by pressing the small green orange tea or the tea packaging can, so that the product bracket is convenient for the user to take out.
It should be noted that the use of the telescopic self-locking device is not limited to the bracket, and meanwhile, the use of the product bracket is not limited to the bracket of the tea packing box, and according to practical situations, the product bracket can support any small product, such as jewelry, cosmetics and the like.
In the description of the present invention, it should be understood that the terms "first" and "second" are used merely to describe and distinguish between different technical features, and should not be construed as indicating or implying a relative importance or number of technical features indicated. Furthermore, in the description of the invention, unless otherwise indicated, the meaning of "a number" may be two or more.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (6)
1. A scalable self-locking device, characterized in that: comprises a top expansion joint, a bottom expansion joint, a rotating cylinder, a middle bearing spring and at least one middle expansion joint, wherein the top expansion joint is movably arranged in the middle expansion joint, the middle expansion joint is movably arranged in the bottom expansion joint, the top expansion joint, the middle expansion joint and the bottom expansion joint are sequentially connected from top to bottom, expansion joint anti-falling clamping positions are respectively arranged between two adjacent expansion joints, a rotating cylinder mounting part is arranged at the bottom end of the interior of the bottom expansion joint, the rotating cylinder mounting part is inserted in the rotating cylinder, a rotating cylinder anti-falling clamping position is arranged between the rotating cylinder mounting part and the rotating cylinder, the rotating cylinder can rotate relative to the bottom expansion joint, the middle bearing spring is arranged between the top expansion joint and the bottom expansion joint and penetrates through all the middle expansion joints and the rotating cylinder, the bottom of the top expansion joint is provided with a circle of continuously arranged V-shaped driving teeth and a plurality of driving clamping blocks which are positioned on the inner side surfaces of the corresponding driving teeth and protrude inwards, the bottom of each driving clamping block is respectively provided with a V-shaped surface which is matched with the shape of the driving teeth, the top of each driving clamping block is respectively provided with a driving clamping block inclined surface, the outer wall of the lower end of the rotating cylinder is provided with a plurality of outwards protruding lower driving inclined blocks, the top of each lower driving inclined block is provided with a first driving inclined surface which is in sliding fit with the corresponding driving teeth and the driving clamping blocks, the outer wall of the upper end of the rotating cylinder is provided with a plurality of groups of upper driving inclined blocks, each group of upper driving inclined blocks is respectively composed of a first upper driving inclined block and a second upper driving inclined block, the bottom of each first upper driving inclined block is provided with a second driving inclined surface which is in sliding fit with the driving clamping block inclined surface of the driving clamping block, the bottom of the second upper driving inclined block is provided with a third driving inclined surface which is used for being in sliding fit with the driving inclined surface of the driving clamping block, a locking clamping groove which is used for being in clamping fit with the driving clamping block of the top expansion joint to limit the upward movement of the top expansion joint is formed between the first upper driving inclined block and the second upper driving inclined block in each group of upper driving inclined blocks, and the lower driving inclined blocks are positioned below the gaps of the two adjacent groups of upper driving inclined blocks;
The bottom of each lower driving inclined block of the rotating cylinder is respectively provided with a hemispherical sliding convex body which is used for facilitating the rotation of the rotating cylinder;
The inside of a rotating cylinder is provided with a rotating cylinder bearing spring, the rotating cylinder bearing spring is sleeved on the outer wall of a rotating cylinder installation component, one end of the rotating cylinder bearing spring abuts against the inner bottom end of the bottom expansion joint, and the other end of the rotating cylinder bearing spring abuts against the inner wall of the rotating cylinder.
2. The retractable self-locking device of claim 1, wherein: the outer walls of the top expansion joint and all the middle expansion joints are respectively provided with a longitudinal limit guide block, and the inner walls of the bottom expansion joint and all the middle expansion joints are respectively provided with a longitudinal limit guide groove for the corresponding longitudinal limit guide blocks to be inserted.
3. The retractable self-locking device of claim 1 or 2, wherein: the middle expansion joint is provided with two, is first middle expansion joint and second middle expansion joint respectively, first middle expansion joint movable mounting is in the inside of second middle expansion joint.
4. A scalable auto-lock's product bracket, its characterized in that: a telescopic self-locking device comprising a first blade and any one of claims 1 to 3, the first blade being mounted on top of a top telescopic section of the telescopic self-locking device.
5. A scalable auto-lock's product bracket, its characterized in that: the telescopic self-locking device comprises a second supporting plate, a base, a bearing auxiliary spring and the telescopic self-locking device according to any one of claims 1 to 3, wherein the second supporting plate is arranged at the top of a top telescopic joint of the telescopic self-locking device, the base is arranged at the bottom of a bottom telescopic joint of the telescopic self-locking device, and the bearing auxiliary spring is arranged between the second supporting plate and the base and is positioned at the periphery of the telescopic self-locking device.
6. The retractable self-locking product carrier of claim 5, wherein: the anti-bullet socket is characterized by further comprising an anti-bullet socket, a socket mounting seat is arranged on the base, the anti-bullet socket can be transversely and movably mounted in the socket mounting seat, and one end of the anti-bullet socket can penetrate through holes formed in the side walls of the bottom expansion joint and all the middle expansion joints and is inserted below the top expansion joint so as to prevent the top expansion joint from being contacted with a lower driving inclined block of the rotating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302022.8A CN109315988B (en) | 2018-11-02 | Telescopic self-locking device and product bracket using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302022.8A CN109315988B (en) | 2018-11-02 | Telescopic self-locking device and product bracket using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109315988A CN109315988A (en) | 2019-02-12 |
| CN109315988B true CN109315988B (en) | 2024-06-07 |
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