Adjustable outward tension device and slide rail

Abstract

The utility model relates to the field of mechanical transmission, and concretely is an adjustable outward type tension device, the tension device includes the base that can be supplied to the flexible cable, the upper tension wheel and the lower tension wheel that are located on the base and the outside of flexible cable, the inside of base is equipped with the elastic bidirectional tension assembly that can drive the axis reverse movement of upper tension wheel and lower tension wheel, and the pivot of upper tension wheel and lower tension wheel is respectively threaded in the base and elastic bidirectional tension assembly, the adjustable outward type tension device of the utility model is stable and reliable and can adjust tension.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission, specifically an adjustable outward tensioning device and a slide rail using the tensioning device. Background Technology

[0002] Tensioning devices are widely used mechanical transmission components that make the mechanical transmission process more stable and reliable by applying tension force to the transmission parts.

[0003] Chinese patent document CN112956846A discloses a linear motion mechanism, a drawer assembly, and a storage cabinet. It achieves linear motion of the drawer assembly through the cooperation of a rotating wheel, a rotating drive component, a mounting component, and a primary slide rail, using a flexible cable wound around the rotating wheel for pulling. However, the flexible cable bears tension from the connected components in both static and dynamic states. Especially in the dynamic state, the flexible cable needs to provide the thrust for the drawer assembly's movement, and the tensile force it bears is greater. After prolonged use, the flexible cable will fatigue due to long-term stress, leading to slack along the direction of the stress. This situation will significantly reduce the sensitivity and reliability of the linear motion mechanism, and in severe cases, may even cause the flexible cable to detach from the linear motion mechanism, rendering it unusable. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable outward tensioning device with adjustable tension and stable reliability.

[0005] Another objective of this invention is to provide a slide rail that utilizes this adjustable outward-facing tensioning device.

[0006] The purpose of this utility model is achieved as follows: an adjustable outward tensioning device, which includes a base through which a flexible cable can pass, an upper tensioning wheel and a lower tensioning wheel disposed on the base and located outside the flexible cable, and an elastic bidirectional tensioning assembly disposed on the inner side of the base, which can drive the axes of the upper tensioning wheel and the lower tensioning wheel to move in opposite directions. The rotating shafts of the upper tensioning wheel and the lower tensioning wheel are respectively connected to the base and the elastic bidirectional tensioning assembly.

[0007] This application optimizes the above structure by providing an upper limit groove and a lower limit groove on the side wall of the base, through which the shafts of the upper tensioning wheel and the lower tensioning wheel can pass and move up and down.

[0008] This application optimizes the above structure. The elastic bidirectional tensioning assembly includes a first sliding seat and a second sliding seat arranged sequentially from the outside to the inside within the base and movable relative to each other. The sides of the first sliding seat and the second sliding seat are respectively provided with a first sliding groove and a second sliding groove through which the rotating shafts of the upper tensioning wheel and the lower tensioning wheel can pass. An elastic component is provided between the first sliding seat and the second sliding seat. An adjusting bolt corresponding to the position of the elastic component is provided on the first sliding seat.

[0009] This application further refines the above structure, and an adjusting plate is provided between the elastic component and the adjusting bolt.

[0010] This application further refines the above structure, and the side of the adjusting piece is provided with a first positioning part that can cover the top of the elastic component and fasten to the side wall of the first sliding seat.

[0011] This application further refines the above structure, and the top of the second sliding seat is provided with a second positioning part that presses against the bottom of the elastic member.

[0012] This application optimizes the above structure by providing grooves on the sides of the upper and lower tensioning wheels for positioning flexible cables.

[0013] This utility model also provides a slide rail, which has an adjustable outward tensioning device as described above.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this adjustable outward-facing tensioning device, an elastic bidirectional tensioning component is installed within the base, which can drive the axes of the upper and lower tensioning wheels to move in opposite directions. First, this tensioning component can drive the axes of the upper and lower tensioning wheels to move within the base. When the tension force of the flexible cable changes in a static or dynamic state, the upper and lower tensioning wheels can exert an inward pressure on the flexible cable through their movement, thus tensioning the cable. Second, under the action of this tensioning component, the axes of the upper and lower tensioning wheels move in opposite directions, and both the upper and lower tensioning wheels are located on the outer side of the flexible cable. Therefore, this reverse movement can keep the flexible cable in a clamped or released state, ensuring the stability and reliability of the cable tension.

[0016] 2. In this adjustable outward-facing tensioning device, the first sliding seat and the second sliding seat can move relative to each other, and an elastic component is provided between them. Through the elastic restoring force at both ends of the elastic component, the first sliding seat and the second sliding seat are pushed to drive the upper tensioning wheel and the lower tensioning wheel to move in opposite directions, thereby achieving the clamping of the flexible cable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2This is an exploded view of the structure of this utility model;

[0019] Figure 3 This is a side view of the tensioning device of this utility model;

[0020] Figure 4 This is a schematic diagram showing the limiting position of the first sliding seat and the lower tensioning wheel of this utility model;

[0021] Figure 5 This is a schematic diagram showing the limiting position of the second sliding seat and the upper tensioning wheel of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the adjusting plate and the second positioning part of this utility model;

[0023] Figure 7 This is a schematic diagram of the slide rail structure of this utility model;

[0024] Figure 8 This is a schematic diagram of the installation of the tensioning device of this utility model.

[0025] The following are marked in the figure: base 1, upper limit groove 11, lower limit groove 12, through groove 13, upper tensioning wheel 21, lower tensioning wheel 22, groove 23, first sliding seat 31, first sliding groove 32, second sliding seat 41, second sliding groove 42, second positioning part 43, elastic component 51, adjusting bolt 52, adjusting piece 53, first positioning part 54. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The applicant hereby emphasizes that the following embodiments are one or more examples of how to achieve the novel technical solution of the present utility model, obtain the corresponding technical effects, and solve the corresponding technical problems. They do not represent that the scope of protection of the technical solution only includes the following embodiments. All structures that are the same as or equivalent to the adjustable outward-facing tensioning device of the present utility model are within the scope of protection of the present utility model.

[0027] according to Figures 1 to 6As shown, the adjustable outward-facing tensioning device of this utility model mainly consists of a base 1, an upper tensioning wheel 21, a lower tensioning wheel 22, and an elastic bidirectional tensioning assembly. The base 1 has a through groove 13 through which the flexible cable can pass. The upper tensioning wheel 21 and the lower tensioning wheel 22 are located on the base 1, specifically within the through groove 13. They are arranged vertically and are both located on the outer side of the flexible cable. The elastic bidirectional tensioning assembly is located on the inner side of the base 1, specifically between the base 1 and the upper tensioning wheel 21 and the lower tensioning wheel 22. The rotating shafts of the upper tensioning wheel 21 and the lower tensioning wheel 22 are respectively connected from the inside to the outside of the elastic bidirectional tensioning assembly and the base 1. The elastic bidirectional tensioning assembly can drive the rotating shafts of the upper tensioning wheel 21 and the lower tensioning wheel 22 to move in opposite directions on the base 1, so that the flexible cable is in a clamped or released state.

[0028] In one embodiment of this utility model, the base 1 has an upper limit groove 11 and a lower limit groove 12 on its side wall. The upper limit groove 11 allows the shaft of the upper tensioning wheel 21 to pass through the side wall of the base 1 and move up and down. The lower limit groove 12 allows the shaft of the lower tensioning wheel 22 to pass through the side wall of the base 1 and move up and down.

[0029] In one embodiment of this utility model, the elastic bidirectional tensioning assembly includes a first sliding seat 31, a second sliding seat 41, an elastic component 51, and an adjusting bolt 52. The first sliding seat 31 and the second sliding seat 41 are located inside the base 1 and are arranged sequentially from the outside to the inside. The base 1, the first sliding seat 31, and the second sliding seat 41 can move relative to each other in the transverse direction of the flexible cable axis so that the upper tensioning wheel 21 and the lower tensioning wheel 22 can be clamped on the flexible cable when the first sliding seat 31 and the second sliding seat 41 are working. A first sliding groove 32 is provided on the side of the first sliding seat 31, which allows the rotating shafts of the upper tensioning wheel 21 and the lower tensioning wheel 22 to pass through and slide within the first sliding groove 32. A second sliding groove 42 is provided on the side of the second sliding seat 41, which allows the rotating shafts of the upper tensioning wheel 21 and the lower tensioning wheel 22 to pass through and slide within the second sliding groove 42. An elastic component 51 is disposed between the first sliding seat 31 and the second sliding seat 41, and presses against the bottom of the first sliding seat 31 and the top of the second sliding seat 41 respectively. An adjusting bolt 52 is also provided on the first sliding seat 31, the adjusting bolt 52 corresponding to the position of the elastic component 51, and can pass through the first sliding seat 31 to connect with the elastic component 51 during operation. In this embodiment, the selection of the elastic component 51 is relatively flexible; it can be a spring, a sheet spring, or even a deceleration cylinder or deceleration pneumatic cylinder with telescopic function.

[0030] In another embodiment of this utility model, an adjusting plate 53 is further provided between the elastic component 51 and the adjusting bolt 52. The two ends of the adjusting plate 53 are respectively connected to the elastic component 51 and the adjusting bolt 52, and the adjusting bolt 52 can stably press against the elastic component 51, making the pressing of the adjusting bolt 52 on the elastic component 51 more reliable during adjustment.

[0031] In another embodiment of this utility model, the side of the adjusting piece 53 also has a first positioning part 54. The first positioning part 54 is fitted around the top of the elastic member 51, improving the stability of the connection between the elastic member 51 and the adjusting piece 53, and preventing the adjusting piece 53 from popping out under force. The first positioning part 54 is fastened to the side wall of the first sliding seat 31, which, in addition to ensuring the positional stability between the adjusting piece 53 and the first sliding seat 31, also serves as a sliding guide.

[0032] In another embodiment of this utility model, the top of the second sliding seat 41 also has a second positioning part 43. The second positioning part 43 presses against the bottom of the elastic member 51 to cooperate with the first positioning part 54 to perform bidirectional positioning of the elastic member 51 in the axial direction.

[0033] In one embodiment of this utility model, the sides of the upper tensioning wheel 21 and the lower tensioning wheel 22 are further provided with grooves 23. The grooves 23 are located on the sides of the upper tensioning wheel 21 and the lower tensioning wheel 22 to position the flexible rope on the sides of the upper tensioning wheel 21 and the lower tensioning wheel 22.

[0034] When the elastic bidirectional tensioning assembly of this utility model is in operation, as the adjusting bolt 52 rotates and presses down, it applies a compressive force to the elastic component 51 through the positioning plate and the second sliding seat 41. The elastic restoring force of the elastic component 51 applies a reaction force to the second sliding seat 41 and the positioning plate from both directions of its axis, causing the second sliding seat 41 to move downward and the first sliding seat 31 to move upward. The upper part of the first sliding groove 32 presses against the side of the rotating shaft of the upper tensioning wheel 21 and drives it to move downward until the rotating shaft of the upper tensioning wheel 21 presses against the lower part of the upper limit groove 11. Meanwhile, the lower part of the second sliding groove 42 presses against the side of the rotating shaft of the lower tensioning wheel 22 and drives it to move upward until the rotating shaft of the lower tensioning wheel 22 presses against the upper part of the lower limit groove 12. At this time, the upper tensioning wheel 21 and the lower tensioning wheel 22 press on the flexible cable simultaneously, increasing the tension of the flexible cable.

[0035] according to Figure 7 and Figure 8 As shown, this utility model also provides a slide rail, which is equipped with the aforementioned adjustable outward tensioning device.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable outward-facing tensioning device, characterized in that: The tensioning device includes a base (1) through which the flexible cable can pass, an upper tensioning wheel (21) and a lower tensioning wheel (22) located on the base (1) and outside the flexible cable. The inner side of the base (1) is provided with an elastic bidirectional tensioning assembly that can drive the axes of the upper tensioning wheel (21) and the lower tensioning wheel (22) to move in opposite directions. The rotating shafts of the upper tensioning wheel (21) and the lower tensioning wheel (22) are respectively connected to the base (1) and the elastic bidirectional tensioning assembly.

2. The adjustable outward-facing tensioning device according to claim 1, characterized in that: The base (1) has an upper limit groove (11) and a lower limit groove (12) on its side wall, through which the shafts of the upper tensioning wheel (21) and the lower tensioning wheel (22) can pass and move up and down.

3. The adjustable outward-facing tensioning device according to claim 1, characterized in that: The elastic bidirectional tensioning assembly includes a first sliding seat (31) and a second sliding seat (41) arranged sequentially from the outside to the inside within the base (1) and movable relative to each other. The sides of the first sliding seat (31) and the second sliding seat (41) are respectively provided with a first sliding groove (32) and a second sliding groove (42) through which the rotating shafts of the upper tensioning wheel (21) and the lower tensioning wheel (22) can pass. An elastic component (51) is provided between the first sliding seat (31) and the second sliding seat (41). An adjusting bolt (52) corresponding to the position of the elastic component (51) is provided on the first sliding seat (31).

4. The adjustable outward-facing tensioning device according to claim 3, characterized in that: An adjusting piece (53) is provided between the elastic component (51) and the adjusting bolt (52).

5. The adjustable outward-facing tensioning device according to claim 4, characterized in that: The side of the adjusting piece (53) is provided with a first positioning part (54) that can cover the top of the elastic member (51) and fasten to the side wall of the first sliding seat (31).

6. The adjustable outward-facing tensioning device according to claim 3, characterized in that: The top of the second sliding seat (41) is provided with a second positioning part (43) that presses against the bottom of the elastic member (51).

7. The adjustable outward-facing tensioning device according to claim 1, characterized in that: The upper tensioning wheel (21) and the lower tensioning wheel (22) are provided with grooves (23) for positioning flexible ropes on their sides.

8. A slide rail, characterized in that: The slide rail is equipped with an adjustable outward tensioning device as described in any one of claims 1 to 7.

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