CN215861483U - Double-wheel balanced type constant force telescopic device - Google Patents
Double-wheel balanced type constant force telescopic device Download PDFInfo
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- CN215861483U CN215861483U CN202122499816.1U CN202122499816U CN215861483U CN 215861483 U CN215861483 U CN 215861483U CN 202122499816 U CN202122499816 U CN 202122499816U CN 215861483 U CN215861483 U CN 215861483U
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- reed
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- connecting block
- positioning seat
- rope
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Abstract
The utility model discloses a double-wheel balanced type constant force expansion device, which comprises an outer shell and a constant force balance mechanism arranged in the outer shell, wherein the constant force balance mechanism comprises a spring assembly, a balance assembly and a pull rope assembly; the pull rope assembly comprises a pull ring and a pulling rope, one end of the pulling rope is connected in the middle of the second rotation positioning seat, the pulling rope is wound at the outer end of the middle of the second rotation positioning seat, and the other end of the pulling rope penetrates through the outer shell and then is connected with the pull ring. The constant force telescopic device has better constant force telescopic effect, more stable and safer use, simple assembly and novel structure.
Description
Technical Field
The utility model relates to the field of machinery, in particular to a double-wheel balanced type constant force telescopic device.
Background
The existing display support comprises a fixed support, a lifting support, a rotary support and a constant force support, and a spring or a constant force spring is used for balancing the force at a certain lifting point in the lifting constant force support. For example, in the conventional telescopic balance structure, the balance of force is performed by a spring during the telescopic operation. Present clockwork spring is generally direct and leg joint, forward resilience force through clockwork spring itself, reach the equilibrium of the power when mechanism is flexible, thereby make after extending structure or elevation structure reach a certain position, make and be in certain balanced state, but present clockwork spring's volume is too big, and clockwork spring uses inconveniently, the unbalanced condition appears easily, and because clockwork spring belongs to straightening or contraction state always, along with the increase of clockwork spring live time, the condition that reduces can appear to its resilience force, thereby make extending structure or elevation structure's the effect that resets reduce, extending structure or elevation structure's result of use and life also can reduce.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-wheel balanced type constant force telescopic device which is better in constant force telescopic effect, more stable and safer to use, simple to assemble, simple and novel in structure and high in practicability.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a double-wheel balanced type constant force telescopic device comprises an outer shell and a constant force balance mechanism arranged in the outer shell, wherein the constant force balance mechanism comprises a spring assembly, a balance assembly and a pull rope assembly;
the balance assembly comprises a second rotating positioning seat, the reed end of the first constant force spring is connected with the left part of the second rotating positioning seat through the first spring fixing assembly, and the reed end of the second constant force spring is connected with the right part of the second rotating positioning seat through the second spring fixing assembly;
the pull rope assembly comprises a pull ring and a pulling rope, one end of the pulling rope is fixedly connected with the second rotation positioning seat, the pulling rope is wound at the outer end of the middle part of the second rotation positioning seat, and the other end of the pulling rope penetrates through the outer shell and then is connected with the pull ring.
Preferably, the outer shell comprises a lower positioning shell and an upper shell cover connected to the upper end of the lower positioning shell, and a first shell cover hole for the pulling rope to pass through is formed in the front part of the upper shell cover;
the inner part and the outer part of the front part of the lower positioning shell are both provided with a buckle type bearing positioning seat; the end part of the first rotating positioning seat and the end part of the second rotating positioning seat are connected with the buckle type bearing positioning seat through the rotating connecting assembly.
Preferably, the first rotating positioning seat comprises a first rotating shaft rod, a first rotating shaft sleeve sleeved on the first rotating shaft rod, and a first separating sleeve;
first rotation axle sleeve includes that the left reed cup joints pipe portion, threaded connection pipe portion and right reed cup joints the pipe portion in first, and first partition sleeve screwed connection is on threaded connection pipe portion in first, and the left reed cup joints pipe portion and is used for connecting first constant force spring, and the right reed cup joints pipe portion and is used for connecting the second constant force spring.
Preferably, the second rotation positioning seat comprises a second rotation shaft rod, a second rotation shaft sleeve sleeved on the second rotation shaft rod and a pull rope positioning concave wheel, the second rotation shaft sleeve comprises a left reed connecting block part, a middle reed connecting block part and a right reed connecting block part, a first screw connecting hole is formed in the left reed connecting block part, and a second screw connecting hole is formed in the right reed connecting block part.
Preferably, the pull rope positioning concave wheel is sleeved on the middle rope body connecting block part and is fixedly connected with the middle rope body connecting block part; at least one first pulling rope connecting through hole for fixing a pulling rope is formed in the pulling rope positioning concave wheel and the middle rope body connecting block part.
Preferably, the first rotating shaft rod is a round rod, the first rotating shaft sleeve is a round pipe, the radius of the first middle threaded connecting pipe part is larger than that of the left reed sleeving pipe part, and the radius of the left reed sleeving pipe part is the same as that of the right reed sleeving pipe part;
first fretwork groove has all been seted up in left side reed cup joints the pipe portion and the right reed cup joints the pipe portion.
Preferably, the second rotating shaft rod is a round rod, the second rotating shaft sleeve is in a cylindrical block shape, the radius of the left reed connecting block part is the same as that of the right reed connecting block part, and the radius of the middle rope connecting block part is larger than that of the left reed connecting block part;
and second hollow grooves are formed in the left reed connecting block part and the right reed connecting block part.
Preferably, one end of the pulling rope is connected with a rope body hanging ring, a first hole inner positioning ring is arranged in the first pulling rope connecting through hole, and the rope body hanging ring can be hung on the first hole inner positioning ring.
The utility model has the beneficial effects that:
above-mentioned double round balanced type constant force telescoping device through setting up neotype spring unit, balanced subassembly and stay cord subassembly's connection structure for after stay cord subassembly atress, drive spring unit through balanced subassembly, realize pulling the flexible and flexible in-process of rope and reach arbitrary a bit after, realize the relative balance of power.
The balance assembly is different from a structure in which the force is vertically balanced by directly arranging a constant force spring or a steel coil spring in the existing structure, and the balance assembly utilizes the resilience force of the constant force spring when the constant force spring is wound on the second rotary positioning seat and the constant force spring rotates forwards or backwards to relatively balance the reverse tension of the pulling rope in the rotating process.
The constant force telescopic device is of a double-positioning structure, the pulling rope is connected to the middle of the second rotating positioning seat, the stress of the pull rope assembly is more balanced, the whole structure is more stable, the two constant force springs are connected through the first rotating positioning seat, the structure is stable, the installation is convenient, the whole size is smaller, the processing is more convenient, and the later maintenance is safer and more reliable.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present invention in the prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic top view of the overall structure of a dual-wheel balanced constant-force telescopic device.
Fig. 2 is a schematic left side view of the double-wheel balanced constant force telescopic device in section.
Fig. 3 is an isometric illustration of a constant force balance mechanism.
FIG. 4 is a right side schematic view of the spring assembly and counterbalance assembly connection.
Fig. 5 is a schematic structural diagram of the first rotational positioning seat.
Detailed Description
The utility model provides a double-wheel balanced type constant force telescopic device, and the utility model is further described in detail below in order to make the purpose, technical scheme and effect of the utility model clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The utility model is described in detail below with reference to the accompanying drawings:
combine fig. 1 to fig. 5, a double round balanced type constant force telescoping device, including shell body 1 and the constant force balance mechanism of setting in shell body 1, constant force balance mechanism includes spring assembly 2, balanced subassembly 3 and stay cord subassembly 4, and spring assembly 2 includes first rotational positioning seat 21, and first constant force spring 22 and second constant force spring 23 have been cup jointed respectively to the left and right sides of first rotational positioning seat 21.
The balance assembly 3 includes a second rotation positioning seat 31, the reed end of the first constant force spring 22 is connected to the left portion of the second rotation positioning seat 31 through the first spring fixing assembly, and the reed end of the second constant force spring 23 is connected to the right portion of the second rotation positioning seat 31 through the second spring fixing assembly.
The pulling rope assembly 4 comprises a pulling ring 41 and a pulling rope 42, one end of the pulling rope 42 is connected in the middle of the second rotation positioning seat 31 and wound on the middle of the second rotation positioning seat 31, and the other end of the pulling rope 42 passes through the outer shell 1 and then is connected with the pulling ring 41.
The outer shell 1 is rectangular, the outer shell 1 comprises a lower positioning shell 11 and an upper shell cover 12 connected to the upper end of the lower positioning shell 11, and a first shell cover hole 13 for the pulling rope 42 to pass through is formed in the front part of the upper shell cover 12. The inner part and the rear part of the front part of the lower positioning shell 11 are provided with a buckle type bearing positioning seat 14; the end of the first rotation positioning seat 21 and the end of the second rotation positioning seat 31 are both connected with the snap-in bearing positioning seat 14 through the rotation connecting assembly.
The first rotating positioning seat 21 comprises a first rotating shaft rod 211, a first rotating shaft sleeve sleeved on the first rotating shaft rod 211 and a first separating sleeve 212; the first rotating shaft sleeve comprises a left reed sleeve pipe sleeving part 213, a first middle threaded connecting pipe part 214 and a right reed sleeve pipe sleeving part 215, the first separating sleeve pipe 212 is in threaded connection with the first middle threaded connecting pipe part 214, the left reed sleeve pipe sleeving part 213 is used for connecting the first constant force spring 22, and the right reed sleeve pipe sleeving part 215 is used for connecting the second constant force spring 23.
The second rotation positioning seat 31 includes a second rotation shaft rod 311, a second rotation shaft sleeve sleeved on the second rotation shaft rod 311, and a pull rope positioning concave wheel 312, the second rotation shaft sleeve includes a left reed connecting block portion 313, a middle reed connecting block portion, and a right reed connecting block portion 314, a first screw connecting hole 315 has been opened on the left reed connecting block portion 313, and a first screw connecting hole 316 has been opened on the right reed connecting block portion 314.
The pull rope positioning concave wheel 312 is sleeved on the middle rope body connecting block part and is fixedly connected with the middle rope body connecting block part; at least one first pulling rope connecting through hole for fixing the pulling rope 42 is formed in the pulling rope positioning concave wheel 312 and the middle rope connecting block part. The first rotating shaft 211 is a round rod, the first rotating sleeve is a round tube, the radius of the first middle screw-threaded connecting tube part 214 is larger than the radius of the left reed socket tube part 213, and the radius of the left reed socket tube part 213 is the same as the radius of the right reed socket tube part 215. First hollow grooves 216 are formed in the left reed sleeve pipe part 213 and the right reed sleeve pipe part 215.
The second rotating shaft lever 311 is a round rod, the second rotating shaft sleeve is cylindrical, the radius of the left reed connecting block part 313 is the same as that of the right reed connecting block part 314, and the radius of the middle rope connecting block part is larger than that of the left reed connecting block part. And second hollow-out grooves 317 are formed in the left reed connecting block part 313 and the right reed connecting block part 314. One end of the pulling rope 42 is connected with a rope body hooking ring, a first inner positioning ring is arranged in the first pulling rope connecting through hole, and the rope body hooking ring can be hooked on the first inner positioning ring.
Above-mentioned double round balanced type constant force telescoping device through setting up neotype spring unit 2, balanced subassembly 3 and stay cord subassembly 4 connection structure for after stay cord subassembly atress, drive spring unit 2 through balanced subassembly 3, realize the flexible and flexible in-process of pulling rope and reach arbitrary a bit after, realize the relative balance of power.
The balance assembly is different from a structure in which the force is vertically balanced by directly arranging a constant force spring or a steel coil spring in the existing structure, and the balance assembly utilizes the resilience force of the constant force spring when the constant force spring is wound on the second rotary positioning seat and the constant force spring rotates forwards or backwards to relatively balance the reverse tension of the pulling rope in the rotating process.
The constant force telescopic device is of a double-positioning structure, the pulling rope is connected to the middle of the second rotating positioning seat, the stress of the pull rope assembly is more balanced, the whole structure is more stable, the two constant force springs are connected through the first rotating positioning seat, the structure is stable, the installation is convenient, the whole size is smaller, the processing is more convenient, and the later maintenance is safer and more reliable.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The parts which are not described in the utility model are realized by adopting or referring to the prior art.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. A double-wheel balanced type constant force telescopic device is characterized by comprising an outer shell and a constant force balance mechanism arranged in the outer shell, wherein the constant force balance mechanism comprises a spring assembly, a balance assembly and a pull rope assembly;
the balance assembly comprises a second rotating positioning seat, the reed end of the first constant force spring is connected with the left part of the second rotating positioning seat through the first spring fixing assembly, and the reed end of the second constant force spring is connected with the right part of the second rotating positioning seat through the second spring fixing assembly;
the pull rope assembly comprises a pull ring and a pulling rope, one end of the pulling rope is fixedly connected with the second rotation positioning seat, the pulling rope is wound at the outer end of the middle part of the second rotation positioning seat, and the other end of the pulling rope penetrates through the outer shell and then is connected with the pull ring.
2. The double-wheel balanced constant-force telescopic device as claimed in claim 1, wherein the outer housing comprises a lower positioning housing and an upper housing cover connected to the upper end of the lower positioning housing, and a first housing cover hole for the pulling rope to pass through is formed in the front part of the upper housing cover;
the inner part and the outer part of the front part of the lower positioning shell are both provided with a buckle type bearing positioning seat; the end part of the first rotating positioning seat and the end part of the second rotating positioning seat are connected with the buckle type bearing positioning seat through the rotating connecting assembly.
3. The dual-wheel balanced constant-force telescopic device as claimed in claim 1, wherein the first rotation positioning seat comprises a first rotation shaft, a first rotation shaft sleeve sleeved on the first rotation shaft, and a first separation sleeve;
first rotation axle sleeve includes that the left reed cup joints pipe portion, threaded connection pipe portion and right reed cup joints the pipe portion in first, and first partition sleeve screwed connection is on threaded connection pipe portion in first, and the left reed cup joints pipe portion and is used for connecting first constant force spring, and the right reed cup joints pipe portion and is used for connecting the second constant force spring.
4. The double-wheel balanced type constant force telescopic device according to claim 1, wherein the second rotation positioning seat comprises a second rotation shaft rod, a second rotation shaft sleeve sleeved on the second rotation shaft rod, and a pull rope positioning concave wheel, the second rotation shaft sleeve comprises a left reed connecting block portion, a middle reed connecting block portion and a right reed connecting block portion, a first screw connecting hole is formed in the left reed connecting block portion, and a second screw connecting hole is formed in the right reed connecting block portion.
5. The double-wheel balanced constant-force telescopic device as claimed in claim 4, wherein the pull rope positioning concave wheel is sleeved on and fixedly connected with the middle rope body connecting block part; at least one first pulling rope connecting through hole for fixing a pulling rope is formed in the pulling rope positioning concave wheel and the middle rope body connecting block part.
6. The dual-wheel balanced constant force telescopic device according to claim 3, wherein the first rotating shaft rod is a round rod, the first rotating shaft sleeve is a round pipe, the radius of the first middle threaded connecting pipe part is larger than that of the left reed sleeved pipe part, and the radius of the left reed sleeved pipe part is the same as that of the right reed sleeved pipe part;
first fretwork groove has all been seted up in left side reed cup joints the pipe portion and the right reed cup joints the pipe portion.
7. The double-wheel balanced constant-force telescopic device as claimed in claim 4, wherein the second rotating shaft rod is a round rod, the second rotating shaft sleeve is in a cylindrical block shape, the radius of the left reed connecting block part is the same as that of the right reed connecting block part, and the radius of the middle rope connecting block part is larger than that of the left reed connecting block part;
and second hollow grooves are formed in the left reed connecting block part and the right reed connecting block part.
8. The two-wheel balanced constant force telescopic device according to claim 5, wherein one end of the pulling rope is connected with a rope body hanging ring, a first inner hole positioning ring is arranged in the first pulling rope connecting through hole, and the rope body hanging ring can be hung on the first inner hole positioning ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122499816.1U CN215861483U (en) | 2021-10-18 | 2021-10-18 | Double-wheel balanced type constant force telescopic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122499816.1U CN215861483U (en) | 2021-10-18 | 2021-10-18 | Double-wheel balanced type constant force telescopic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861483U true CN215861483U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122499816.1U Active CN215861483U (en) | 2021-10-18 | 2021-10-18 | Double-wheel balanced type constant force telescopic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861483U (en) |
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2021
- 2021-10-18 CN CN202122499816.1U patent/CN215861483U/en active Active
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