Telescopic inclined strut
By designing telescopic braces, the length and angle of the inner and outer sleeves are adjustable, solving the problems of ladder applicability and safety in different environments, and improving the stability and safety of the ladder.
Patent Information
- Application Number
- CN202423092203.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing ladder bracing devices are not widely applicable in different situations, especially in environments with limited space or where the ladder opening angle needs to be frequently changed, which may limit the ladder's applicability and safety.
Design a telescopic brace that allows for the extension and angle adjustment of the inner and outer sleeves by adjusting their length and angle, and utilizing the cooperation of a rack, spring teeth, and first and second connecting brackets, to adapt to different ground conditions and usage scenarios.
It improves the stability and applicability of the ladder, and enhances its safety and support in different environments.
Smart Images
Figure CN223577843U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ladder parts technical field especially a telescopic inclined support. BACKGROUND
[0002] Ladder as a basic climbing tool, two solid long poles as the main support structure, and set equal distance between them to step on the rungs. In high-altitude operation, people not only need the ladder to provide enough height, but also pursue its stability to ensure the safety of operation. However, in actual use, due to the unevenness of the ground conditions, such as the ups and downs and unevenness of the ground, often make it difficult to keep the ladder stable, thereby increasing the risk of operation.
[0003] In order to deal with this challenge, a new type of ladder inclined support device appears in the market, which can be installed on the leg of the ladder, and through the support with the ground forming a certain angle, it provides additional stability for the ladder. The use of this inclined support device can effectively enhance the stability of the ladder without the support of fixed structure, reduce the risk caused by uneven ground, and make high-altitude operation more safe and reliable.
[0004] However, due to different needs of different use occasions for the opening and closing degree of the ladder, the applicability of the inclined support is not extensive, and some occasions may not be suitable for using the inclined support. For example, in the environment where the space is limited or the opening and closing angle of the ladder needs to be changed frequently, the fixed inclined support may limit the applicability and safety of the ladder. SUMMARY
[0005] The technical problem to be solved by the utility model lies in providing a telescopic inclined support, which can adjust the length and angle of the inner sleeve and the outer sleeve, and improve its applicability and safety in different environments.
[0006] In order to solve the above technical problems, the utility model provides a telescopic inclined support, which comprises an outer sleeve and an inner sleeve which is inserted into the outer sleeve and is in sliding connection with the outer sleeve; the inner sleeve extends out of the lower end of the outer sleeve, a first connecting bracket is hinged to the middle part of the inner sleeve, and a rack is arranged on the outer side of the inner sleeve; a spring tooth is arranged at the lower end of the outer sleeve, which is used to match the rack to clamp the main rack, and a second connecting bracket is hinged to the upper end of the outer sleeve.
[0007] As an improvement of the above scheme, the cross section of the inner sleeve is arc-shaped with the arc being an optimal arc, and the inner side of the outer sleeve matches the outer side of the inner sleeve.
[0008] As an improvement of the above scheme, the rack is arranged at the plane where the chord side of the inner sleeve is located.
[0009] As the improvement of the above-mentioned scheme, the spring tooth comprises a sleeve fixed at the lower end of the outer sleeve and used for the inner sleeve to pass through, a push block matched with the rack at the lower part and articulated with the sleeve at the middle part, and a driving spring installed on the sleeve and used for driving the lower part of the push block to press against the rack.
[0010] As the improvement of the above-mentioned scheme, the sleeve is provided with two connection plates which are spaced apart and articulated with the middle part of the push block, and the connection plates extend outwardly and perpendicularly to the plane where the chord edge of the inner sleeve is located.
[0011] As the improvement of the above-mentioned scheme, the lower part of the sleeve between the two connection plates is provided with a gap for the lower part of the push block to pass through.
[0012] As the improvement of the above-mentioned scheme, the first connecting support comprises a first mounting seat, two swing rods which are spaced apart and articulated with the outer side of the middle part of the inner sleeve at the upper end, and a first rotating shaft which is articulated with the lower end of the two swing rods and the first mounting seat, the rotation axis of the swing rod upper end articulated part and the rotation axis of the first rotating shaft are both parallel to the plane where the chord edge of the inner sleeve is located, and the first mounting seat is arranged on the side away from the plane where the chord edge of the inner sleeve is located.
[0013] As the improvement of the above-mentioned scheme, the second connecting support comprises a second mounting seat and a second rotating shaft which is articulated with the upper end of the outer sleeve and the second mounting seat, the rotation axis of the second rotating shaft is parallel to the plane where the chord edge of the inner sleeve is located, and the second mounting seat is arranged on the side away from the plane where the chord edge of the inner sleeve is located.
[0014] As the improvement of the above-mentioned scheme, the plane where the chord edge of the inner sleeve is located is provided with a receiving cavity which is concave inwardly and used for installing the rack.
[0015] As the improvement of the above-mentioned scheme, the lower end of the inner sleeve is provided with a supporting leg.
[0016] The utility model discloses a telescopic diagonal bracing through the mutual cooperation between the inner sleeve, the outer sleeve, the rack, the spring tooth, the first connecting support and the second connection, so that the ladder can adjust the length and angle of the inner sleeve and the outer sleeve according to different ground conditions and use scenes, to realize the best supporting effect.
[0017] The utility model discloses a telescopic diagonal bracing through the mutual cooperation between the inner sleeve, the outer sleeve, the rack, the spring tooth, the first connecting support and the second connection, so that the ladder can adjust the length and angle of the inner sleeve and the outer sleeve according to different ground conditions and use scenes, to realize the best supporting effect. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the structural schematic view of telescopic diagonal bracing in the utility model embodiment;
[0019] Figure 2 It is the working principle diagram of spring tooth in the utility model embodiment;
[0020] Figure 3 Figure 9 is a structural schematic view of the rack installed in the accommodating cavity in the embodiment of the utility model;
[0021] Figure 4 Figure 8 is a structural schematic view of the first connecting support installed on the inner sleeve in the embodiment of the utility model;
[0022] Figure 5 Figure 7 is a structural schematic view of the second connecting support installed on the outer sleeve in the embodiment of the utility model.
[0023] In the drawings:
[0024] 100, outer sleeve; 110, spring tooth; 111, sleeve; 112, pushing block; 113, driving spring; 114, connecting plate; 115, accommodation gap; 120, second connecting support; 121, second mounting seat; 122, second rotating shaft;
[0025] 200, inner sleeve; 210, first connecting support; 211, first mounting seat; 212, swing rod; 213, first rotating shaft; 220, rack; 230, accommodating cavity; 240, supporting leg. DETAILED DESCRIPTION
[0026] The utility model will be further described in combination with the drawings and specific embodiments, so as to more clearly understand the technical thought of the utility model claimed by the utility model. Only this declaration, the up, down, left, right, front, back, inside, outside and other orientation words appearing in the text or about to appear in the utility model are based on the drawings of the utility model, and it is not a specific limitation on the utility model.
[0027] As Figures 1 to 5 shown, the utility model embodiment of a telescopic diagonal brace, including outer sleeve 100 and the inner sleeve 200 that stretches into outer sleeve 100 and with outer sleeve 100 sliding connection;The inner sleeve 200 stretches out outer sleeve 100 lower end. Actually, the outer surface of inner sleeve 200 and the inner surface of outer sleeve 100 match each other, so that the relative sliding of inner sleeve 200 in outer sleeve 100 is carried out, and the combined length of inner sleeve 200 and outer sleeve 100 can be adjusted, so as to realize telescopic function.
[0028] The middle part of the inner sleeve 200 is hinged with the first connecting support 210. Actually, the first connecting support 210 is used for installing and connecting the inner sleeve 200 to the leg of the ladder, so that the inner sleeve 200 can swing relative to the leg of the ladder.
[0029] The inner sleeve 200 is provided with a rack 220 outside, and the outer sleeve 100 is provided with spring teeth 110 at the lower end for clamping the main rack 220. In fact, the spring teeth 110 device is composed of teeth articulated with the outer sleeve 100 and a spring for driving the teeth to press against the rack 220. In the initial state, the force of the spring makes the teeth tightly press against the rack 220, and the teeth can be precisely engaged with the rack 220. This engagement state can effectively lock the rack 220, preventing the inner sleeve 200 from sliding relative to the outer sleeve 100, thereby fixing the combined length of the inner sleeve 200 and the outer sleeve 100. When it is necessary to adjust the combined length of the inner sleeve 200 and the outer sleeve 100, the teeth can be disengaged from the rack 220 by operating the teeth or the spring. Once the teeth are separated from the rack 220, the inner sleeve 200 can freely slide relative to the outer sleeve 100, so that the combined length of the inner sleeve 200 and the outer sleeve 100 can be adjusted as needed. This adjustment mechanism allows the user to accurately set the combined length of the inner sleeve 200 and the outer sleeve 100 according to the actual situation, such as the length of the support required by the ladder leg, to provide appropriate support.
[0030] The upper end of the outer sleeve 100 is articulated with a second connecting bracket 120. In fact, the role of the second connecting bracket 120 is to fix the outer sleeve 100 to the leg of the ladder, so as to allow the inner sleeve 200 to swing relative to the leg of the ladder. In this structure, the combination of the inner sleeve 200 and the outer sleeve 100, together with the first connecting bracket 210 and the second connecting bracket 120, constitutes a four-bar linkage mechanism connected to the leg of the ladder.
[0031] When the length of the inner sleeve 200 and the outer sleeve 100 is adjusted, the four-bar linkage mechanism changes the angle of the combination of the inner sleeve 200 and the outer sleeve 100 relative to the leg of the ladder accordingly. In this way, the combined angle of the inner sleeve 200 and the outer sleeve 100 can be adjusted to adapt to different support requirements, ensuring the stability of the ladder. In addition, when the opening angle of the ladder changes, the length of the combination of the inner sleeve 200 and the outer sleeve 100 can be adjusted so that the lower end of the inner sleeve 200 can be in contact with the ground, thereby providing the necessary support for the ladder.
[0032] The telescopic diagonal brace of the utility model can adjust the length and angle of the inner sleeve 200 and the outer sleeve 100 according to different ground conditions and use scenarios, so as to achieve the best support effect. Such an adjustment mechanism not only enhances the stability of the ladder, but also improves its applicability and safety in different environments.
[0033] Specifically, the inner sleeve 200 is preferably designed in an arc shape with a convex arc, and the inner side of the outer sleeve 100 is matched with the outer side of the inner sleeve 200. Both the inner side and the outer side of the inner sleeve 200 are designed in an arc shape with a convex arc, which makes the inner sleeve 200 slide inside the outer sleeve 100 without rotating relative to the outer sleeve 100. Such a design ensures the stability of the inner sleeve 200 in the supporting state, because the arc shape with a convex arc provides a larger contact area, thereby enhancing the interaction force between the inner sleeve 200 and the outer sleeve 100. In addition, the arc shape with a convex arc means that more materials are used for the inner sleeve 200 and the outer sleeve 100, which not only increases the strength of the structure, but also improves the stability of the support. The larger contact area helps to disperse the load and reduce local stress concentration, thereby providing more reliable support when subjected to external forces. Therefore, such a design not only ensures the stability of the inner sleeve 200, but also improves the carrying capacity of the entire structure.
[0034] More specifically, the rack 220 is preferably arranged at the chord side of the inner sleeve 200, which is easier to install than on a circular arc surface. Further, as shown in Figure 3 The chord side of the inner sleeve 200 is preferably provided with a concave cavity 230 for installing the rack 220, and the rack 220 is installed in the cavity 230. Such an arrangement has two main effects. First, it prevents the rack 220 from extending out of the cavity 230, thereby avoiding contact with the outer side of the outer sleeve 100 and reducing possible wear and damage. Second, placing the rack 220 in the cavity 230 also serves to position the rack 220, ensuring that it remains in the correct position during operation, thereby ensuring the stability and accuracy of the entire structure.
[0035] It should be noted that the spring tooth 110 preferably comprises a sleeve 111 fixed at the lower end of the outer sleeve 100 and used for the inner sleeve 200 to pass through, a push block 112 which is hinged with the sleeve 111 at the middle part and matched with the rack 220 at the lower part, and a driving spring 113 installed on the sleeve 111 and used for driving the lower part of the push block 112 to press against the rack 220. In fact, the sleeve 111 not only supports the push block 112, but also bears the driving spring 113, ensuring that the push block 112 and the driving spring 113 can be stably installed at the lower end of the outer sleeve 100. The driving spring 113 can be in the form of a torsion spring, which is sleeved at the hinge between the push block 112 and the sleeve 111, and abuts against both the sleeve 111 and the push block 112. Such a design enables the lower part of the push block 112 to apply pressure to the rack 220 and precisely match with the rack 220, thereby locking the relative position of the inner sleeve 200 and the outer sleeve 100. In this way, the locking function of the spring tooth 110 is realized, i.e. when it is necessary to fix the inner sleeve 200 and the outer sleeve 100, it can be ensured that their positions will not relatively slide or move, enhancing the stability of the entire structure and the reliability of the operation. Preferably, the upper side of the push block 112 is provided with anti-skid patterns to prevent the operator from slipping when pressing the push block 112 with his hand.
[0036] Further, the sleeve 111 is preferably provided with two connection plates 114 which are spaced apart and both hinged with the middle part of the push block 112, the connection plates 114 extending outwardly perpendicular to the plane where the chord edge of the inner sleeve 200 is located, so that the rotation axis of the hinged part between the middle part of the push block 112 and the connection plate 114 is parallel to the plane where the chord edge of the inner sleeve 200 is located, so that the force transmitted by the driving spring 113 through the lower part of the push block 112 can better act on the rack 220, ensuring the self-locking effect.
[0037] Still further, the sleeve 111 is preferably provided with a gap 115 for the lower part of the push block 112 to pass through at the lower part between the two connection plates 114, preventing the lower part of the push block 112 from interfering with the sleeve 111.
[0038] Specifically, the first connecting support 210 preferably comprises a first mounting base 211, two spaced apart swing rods 212 with upper ends hingedly connected to the outer side of the middle part of the inner sleeve 200, and a first rotating shaft 213 hingedly connecting the lower ends of the two swing rods 212 and the first mounting base 211. The rotation axis of the hingedly connected part of the upper end of the swing rod 212 and the rotation axis of the first rotating shaft 213 are both parallel to the plane of the chord side of the inner sleeve 200, and the first mounting base 211 is arranged on the side away from the plane of the chord side of the inner sleeve 200. In fact, the middle part of the inner sleeve 200 is designed below the second connecting support, and such a layout makes the inner sleeve 200 maintain a larger distance from the ladder leg during work. In order to adapt to the change of the distance, the swing rod 212 adjusts and adapts the distance between the middle part of the inner sleeve 200 and the ladder leg, so as to ensure that the inner sleeve 200 can be stable in different working states.
[0039] Specifically, the second connecting support 120 preferably comprises a second mounting base 121 and a second rotating shaft 122 hingedly connecting the upper end of the outer sleeve 100 and the second mounting base 121. The rotation axis of the second rotating shaft 122 is parallel to the plane of the chord side of the inner sleeve 200, and the second mounting base 121 is arranged on the side away from the plane of the chord side of the inner sleeve 200. In fact, the upper end of the outer sleeve 100 is hingedly connected to the ladder leg through the second mounting base 121 and the second rotating shaft 122, which cooperates with the first connecting support 210 to ensure that the inner sleeve 200 and the outer sleeve 100 can achieve a suitable swing angle and combined length during work. Such a structure design allows the ladder to adjust the relative position of the inner sleeve 200 and the outer sleeve 100 according to the needs under different use conditions, so as to adapt to different working angles and length requirements.
[0040] In addition, the lower end of the inner sleeve 200 is preferably provided with a foot 240. In fact, the foot 240 can be directly installed on the lower end of the inner sleeve 200 in a sleeved manner. The purpose of such a design is that when the inner sleeve 200 contacts the ground, the foot 240 contacts the ground first, so as to replace the inner sleeve 200 to directly bear the friction and pressure of the ground. Such an installation method effectively protects the lower end part of the inner sleeve 200, avoids wear caused by direct contact with the ground, and prolongs the service life of the inner sleeve 200.
[0041] The above is only a specific embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure or equivalent process conversion obtained by using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.
Claims
1. A telescopic diagonal brace, characterized in that: It includes an outer sleeve and an inner sleeve that extends into and is slidably connected to the outer sleeve; the inner sleeve extends out of the lower end of the outer sleeve, a first connecting bracket is hinged in the middle of the inner sleeve, and a rack is provided on the outer side of the inner sleeve; the lower end of the outer sleeve is provided with spring teeth for matching with the rack to clamp the main rack, and a second connecting bracket is hinged at the upper end of the outer sleeve.
2. The telescopic brace as described in claim 1, characterized in that: The inner sleeve has a cross-section in the shape of an arc with a dominant arc edge, and the inner surface of the outer sleeve matches the outer surface of the inner sleeve.
3. The telescopic brace as described in claim 2, characterized in that: The rack is positioned on the plane of the chord edge of the inner sleeve.
4. A telescopic brace as described in claim 3, characterized in that: The spring teeth include a sleeve fixed to the lower end of the outer sleeve for the inner sleeve to pass through, a lever hinged in the middle to the sleeve and matched with the rack at the bottom, and a drive spring mounted on the sleeve to drive the lower part of the lever to press against the rack.
5. A telescopic brace as described in claim 4, characterized in that: The sleeve is provided with two spaced connecting plates, both of which are hinged to the center of the lever. The connecting plates extend outward perpendicular to the plane containing the chord edge of the inner sleeve.
6. A telescopic brace as described in claim 5, characterized in that: The lower part of the tube sleeve between the two connecting plates has a clearance notch for the lower part of the push block to pass through.
7. A telescopic brace as described in claim 3, characterized in that: The first connecting bracket includes a first mounting base, two spaced-apart rocker arms with their upper ends hinged to the outer side of the middle of the inner sleeve, and a first rotating shaft that hinges the lower ends of the two rocker arms to the first mounting base. The rotation axis of the rocker arms at the hinge point with the inner sleeve and the rotation axis of the first rotating shaft are both parallel to the plane of the chord edge of the inner sleeve. The first mounting base is located on the side of the inner sleeve away from the plane of the chord edge of the inner sleeve.
8. A telescopic brace as described in claim 3, characterized in that: The second connecting bracket includes a second mounting base and a second rotating shaft that connects the upper end of the hinged outer sleeve to the second mounting base. The rotation axis of the second rotating shaft is parallel to the plane containing the chord edge of the inner sleeve, and the bracket is located on the side of the outer sleeve away from the plane containing the chord edge of the inner sleeve.
9. A telescopic brace as described in claim 3, characterized in that: The inner sleeve has an inwardly recessed cavity on its chord edge for mounting a rack.
10. A telescopic brace as described in claim 1, characterized in that: The lower end of the inner sleeve is provided with a support foot.