Vacuum chuck handrail

Abstract

The utility model discloses a vacuum chuck handrail, which comprises a chassis assembly, a vacuum chuck, a vacuum chuck and a vacuum chuck, the chassis assembly is mounted on a handrail base and comprises a rubber chuck and a square pull rod, the square pull rod is vertically arranged in the center of the rubber chuck and is sleeved with a spring, and the vacuum degree required by mounting is formed between the rubber chuck and a chuck shell by driving the square pull rod to move upwards; the warning unit assembly comprises an ejector rod and a gear and rack transmission mechanism, the ejector rod drives a rack to drive a gear to rotate, and when the vacuum degree changes, a warning mark above the gear is displayed on the surface of the handrail in a switching mode. According to the utility model, early warning can be carried out after the vacuum degree in the suction cup space is reduced to a certain degree, and a structure used for early warning can prompt a user under the condition that the vacuum degree is reduced and the risk of falling off exists.

Description

Technical Field

[0001] The utility model relates to the field of devices which can be adsorbed on a smooth surface by applying the vacuum negative pressure principle, in particular to a vacuum suction cup handrail. Background Art

[0002] Adsorption devices that apply the vacuum negative pressure principle have been widely used, including tool suction cups and handrail suction cups used in bathrooms and toilets. At present, there is a method in the prior art that uses the principle of vacuuming to set the part where the handrail contacts the wall as a suction cup, and directly adsorbs the handrail on the wall by draining the air in the space enclosed by the suction cup and the adsorption surface. When using this type of handrail, it is necessary to exhaust the air between the suction cup and the adsorption surface, so that it generates negative pressure with the outside atmosphere, so that the suction cup is adsorbed on the adsorbed surface, and it is necessary to always keep the suction cup in a vacuum negative pressure state. In order to maintain the vacuum effect, this type of handrail generally needs to use an air pump for air extraction. It is difficult to arrange the pump body and power supply in the smaller installation space of the rod-shaped handrail. In addition, in occasions where the vacuum degree requirement is not high and vacuum suction cups that do not use facilities such as air pumps, it is generally necessary to reduce the air pressure in the space by increasing the space in the suction cup, thereby forming a negative pressure state to achieve the purpose of adsorption. This type of vacuum suction cup generally has a lever prying mechanism and a self-locking mechanism.

[0003] For example, Chinese patent CN204416277U discloses a handheld glass suction cup (i.e., a tool suction cup), including two suction cup bodies, two suction cup handles, two connecting brackets, and a retractable connecting rod device. The two suction cup bodies are respectively connected to the two end pins of the retractable connecting rod device through two connecting brackets, the two connecting brackets are respectively welded on the two suction cup bodies, and the two suction cup handles are respectively welded in the center of the two suction cup bodies. The suction cup can adjust the suction cup angle and the suction cup connecting rod length, so that the application range of the suction cup can be expanded and flexibly adjusted, and it can adsorb glass with a large degree of curvature; the suction cup handle with a lifting ear can realize the transportation and installation of curved glass by manual or lifting equipment; the torsion device using the lever principle can appropriately reduce the driving force of the suction cup rubber ring deformation. At the same time, it can provide a stable and safe adsorption method with the characteristics of low initial working pressure, wide application range, and high reliability. However, this type of solution lacks warning signs that can be observed at prominent locations on the handrails, and also lacks a simple and effective structure for suction cup suction warning. Once the suction weakens, the user is unaware that it may cause danger.

[0004] Therefore, there is an urgent need for a vacuum suction cup handrail that can provide an effective warning when the vacuum degree in the suction cup space drops to a certain level.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a vacuum suction cup handrail, which can give an early warning when the vacuum degree in the suction cup space decreases to a certain level. The structure used for the early warning can remind the user when there is a risk of falling off due to the weakening of the vacuum degree.

[0007] To achieve the above-mentioned purpose, the utility model provides a vacuum suction cup armrest, comprising: a chassis assembly, which is installed on an armrest base, including a rubber suction cup and a square pull rod, the square pull rod is vertically arranged at the center position of the rubber suction cup and is sleeved with a spring, and the vacuum degree required for installation is formed between the rubber suction cup and the suction cup shell by driving the square pull rod upward; a warning unit assembly, which includes a push rod and a gear rack transmission mechanism, and the gear is driven to rotate by the push rod to drive the rack. When the vacuum degree changes, the warning mark above the gear is switched and presented on the surface of the armrest.

[0008] Furthermore, in the above technical solution, the rack and pinion transmission mechanism may include: a rack, which can be in a slidable state on a guide rail, and the lower surface of the rack has an inclined surface; a gear, which is integrally formed with the red part of the warning sign, and the gear is meshed with the rack; the green part of the warning sign is assembled with the red part by side insertion; the rotation of the gear causes the green part and the red part to switch between presentation; a torsion spring, which is sleeved on the shaft of the gear, the torsion spring causes the red part to appear in a natural state, and the torsion spring causes the green part to appear in a compressed state.

[0009] Furthermore, in the above technical solution, the guide rail may be U-shaped and fixed in the armrest base, and a limit block is provided at the U-shaped opening to limit the rack within the range of the guide rail.

[0010] Furthermore, in the above technical solution, the upper end of the push rod is an inclined surface, and the inclined surface is matched with the inclined surface of the rack.

[0011] Furthermore, in the above technical solution, a threaded section may be provided at the lower end of the ejector rod, and the threaded section is matched with the internal thread of the ejector head and is used to adjust the overall height of the ejector rod.

[0012] Furthermore, in the above technical solution, a transparent observation window may be provided at the corresponding position where the green part and the red part are switched and presented, and the observation window may be provided on the upper surface of the armrest cover.

[0013] Furthermore, in the above technical solution, buckles may be provided at both ends of the upper cover of the armrest and above the square pull rod, for driving the square pull rod to move upward, thereby adsorbing the rubber suction cup onto the smooth surface.

[0014] Furthermore, in the above technical solution, the pull buckle can be pivotally connected to the top of the square pull rod through a locking pin.

[0015] Furthermore, in the above technical solution, the number of warning unit assemblies is the same as the number of chassis assemblies.

[0016] Furthermore, in the above technical solution, the spring sleeved on the square pull rod may be a tower-shaped spring.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1) The vacuum suction cup handrail of the utility model can provide a timely warning when the vacuum degree in the suction cup space decreases to a certain level through the setting of the warning unit component. The warning structure can remind the user when the vacuum degree decreases and there is a risk of falling off, which can greatly reduce the probability of danger;

[0019] 2) The vacuum suction cup handrail of the utility model can convert the thrust of the push rod into the sliding of the rack on the guide rail through the rack, gear and torsion spring, and then convert the translational sliding of the rack into the rotation of the gear, so that the red part and the green part of the warning sign can be switched in different states, and the user can make risk judgment more intuitively;

[0020] 3) The green part of the warning sign of the utility model is installed together with the red part by side insertion, so that the two are always a whole in the direction of rotation; the gear and the red part of the warning sign are designed as an integrated structure, which can further enhance the integrity of the assembly;

[0021] 4) The lower end of the push rod of the utility model is provided with a threaded plug, so that the overall length of the push rod can be fine-tuned, which can effectively improve the accuracy of the warning sign display;

[0022] 5) The utility model is particularly suitable for use in handrail suction cups, and can also be used in tool suction cups.

[0023] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, and at the same time to make the above and other purposes, technical features and advantages of the utility model easier to understand, one or more preferred embodiments are listed below and described in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the appearance structure of the vacuum suction cup handrail of the utility model (three-dimensional upward view).

[0025] Figure 2 It is an exploded view of the vacuum suction cup handrail of the utility model.

[0026] Figure 3 It is a schematic diagram of the top view of the structure of the vacuum suction cup handrail of the utility model.

[0027] Figure 4 yes Figure 3 BB section view.

[0028] Figure 5 It is a partial enlarged view of the vacuum suction cup handrail base of the utility model (the gear in the warning unit assembly and the red part, green part, torsion spring and other partial structures of the warning mark are removed; the relative position relationship and fixing method of the rack and guide rail, limit block and other structures are shown).

[0029] Figure 6 It is a schematic diagram of a combination of a gear in a vacuum suction cup handrail and a red part and a green part of a warning mark.

[0030] Figure 7 It is another schematic diagram (coloring diagram) of the combination of the gear in the vacuum suction cup handrail of the utility model and the red part and the green part of the warning mark.

[0031] Description of main reference numerals:

[0032] 100- Vacuum suction cup armrest;

[0033] 1-armrest base, 11-rack, 111-inclined surface, 12-gear, 120-red part of warning sign, 121-green part of warning sign, 13-guide rail, 131-limit block, 132-guide rail fixing screw, 133-limit block fixing screw, 14-torsion spring, 15-screw, 16-screw plug, 2-armrest upper cover, 21-lever, 22-locking pin, 23-through hole, 24-transparent window, 3-chassis assembly, 30-rubber suction cup, 31-square pull rod, 32-cone spring, 4-thrust rod, 41-thrust head. DETAILED DESCRIPTION

[0034] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0035] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0036] In this document, for the convenience of description, spatial relative terms such as "below", "below", "down", "above", "above", "upper", etc. may be used to describe the relationship between one element or feature and another element or feature in the accompanying drawings. It should be understood that the spatial relative terms are intended to include different orientations of the object in use or operation in addition to the orientation depicted in the figure. For example, if the object in the figure is turned over, the element described as being "below" or "below" other elements or features will be oriented "above" the element or feature. Therefore, the exemplary term "below" can include both below and above. Objects may also have other orientations (rotated 90 degrees or other orientations) and the spatial relative terms used in this document should be interpreted accordingly.

[0037] In this document, the terms "first", "second", etc. are used to distinguish two different elements or parts, and are not used to limit a specific position or relative relationship. In other words, in some embodiments, the terms "first", "second", etc. can also be interchangeable.

[0038] like Figure 1 , 2 As shown, the utility model provides a vacuum suction cup handrail 100, which can be used in a bathroom or toilet, and can also be used as a tool suction cup. The vacuum suction cup handrail includes a handrail base 1, a handrail upper cover 2 and a chassis assembly 3. The handrail base 1 and the handrail upper cover 2 can be formed in one step respectively and the two can be assembled together. The chassis assembly 3 includes a rubber suction cup 30 and a square pull rod 31. The square pull rod 31 is vertically arranged at the center of the rubber suction cup 30 and is sleeved with a spring (the spring is preferably a tower spring 32). By driving the square pull rod 31 to move upward, the vacuum required for installation can be formed between the rubber suction cup 30 and the suction cup housing. The chassis assembly 3 of the utility model forms a negative pressure by expanding the volume of the hollow space in the suction cup, so that the rubber suction cup 30 is firmly adsorbed on a smooth surface (such as a smooth wall or glass in a bathroom, toilet, etc.). The upward movement of the square pull rod 31 can increase the volume of the space in the suction cup, thereby forming the required vacuum degree. The warning unit assembly includes a push rod 4 and a gear rack transmission mechanism. The push rod 4 drives the gear 12 to rotate by driving the gear 11. When the vacuum degree of the hollow space in the suction cup changes, the warning sign above the gear 12 can be switched on the surface of the handrail. When the suction cup is firmly adsorbed, the warning sign is displayed in green. When the handrail is not adsorbed or the suction force is insufficient and the handrail is about to fall off, the warning sign is displayed in red. When the user observes that the warning sign is red, he can intuitively judge that the suction force of the vacuum suction cup is insufficient and there is a risk of falling off.

[0039] By adopting the vacuum suction cup handrail of the utility model, through the setting of the warning unit component, a timely warning can be issued after the vacuum degree in the suction cup space is reduced to a certain level. The structure used for the warning can remind the user when there is a risk of falling off due to the weakening of the vacuum degree, which can greatly reduce the probability of danger.

[0040] Further Figures 2 to 5 As shown, the rack and pinion transmission mechanism may specifically include a rack 11, a gear 12 and a torsion spring 14. The rack 11 is in a slidable state on the guide rail 13, and the lower surface of the rack 11 has an inclined surface 111. Preferably, but not restrictively, the guide rail 13 may be U-shaped and fixed in the armrest base 1, and a limit block 131 is provided at the U-shaped opening to limit the rack 11 within the range of the guide rail 13. Specifically, refer to Figure 5 The guide rail 13 is installed in the armrest base 1 by the guide rail fixing screws. After the rack is inserted into the guide rail 13, the limit block 131 is further inserted into the guide rail 13, and then the limit block 131 is also fixed in the armrest base 1 by the limit block fixing screws 133. Figure 5 The three screw fixing points in the guide rail can be firmly fixed in the armrest base, and the rack 11 can slide freely on the guide rail 13. The gear 12 is preferably integrally formed with the red part 120 of the warning mark (refer to Figure 6 , Figure 7 ), the gear 12 is meshed with the rack 11. The green part 121 of the warning sign is preferably assembled with the red part 120 by side insertion; the rotation of the gear 12 can switch between the green part 121 and the red part 120. The torsion spring 14 is sleeved on the shaft of the gear 12. The torsion spring 14 makes the red part 120 appear in a natural state (the red part is rotated to the top of the gear 12 shaft and can be observed through the transparent observation window 24 on the armrest), and the torsion spring 14 makes the green part appear in a compressed state (the green part is rotated to the top of the gear 12 shaft).

[0041] Further Figures 1 to 5 As shown, the top rod 4 is vertically arranged and penetrates the armrest base 1 and is located at the inner outer edge of the chassis assembly 3 (refer to Figure 1 ). Figure 2 , 4 As shown, the upper end of the push rod 4 is an inclined surface, which is matched with the inclined surface 111 of the rack 11 (refer to Figure 4 ). The lower end of the mandrel 4 is provided with a threaded section, which is matched with the internal thread of the mandrel 41 and can be used to adjust the height of the mandrel as a whole. Figure 4 As shown, when the vacuum suction cup handrail 100 of the present invention is not installed, the lower end of the push rod 4 protrudes from the rubber suction cup 30 of the chassis assembly 3. When installed, under the reverse thrust of the installation surface, the push rod 4 moves along the Figure 4The inclined surface of the upper end of the push rod slides relatively on the inclined surface 111 of the rack 11, pushing the rack 11 to Figure 4 The left side of the gear 12 slides and translates, and the gear 12 is in meshing state with the rack 11. At this time, the gear 12 is in Figure 4 The transparent observation window 24 is rotated clockwise, so that the red part of the lower part of the transparent observation window 24 is rotated out of the field of vision, and the green part 121 is rotated into the field of vision. During the rotation process, the torsion spring 14 is changed from a natural state to a compressed state. The transparent observation window 24 is preferably arranged on the surface of the upper cover 2 of the armrest.

[0042] Further Figure 2 As shown, buckles 21 are provided at both ends of the armrest cover 2 and above the square rod 31, which are used to drive the square rod 31 to move upward, thereby adsorbing the rubber suction cup 30 on a smooth surface to be installed. Preferably, but not restrictively, the buckle 21 can be pivoted to the top of the square rod 31 through a lock pin 22. Specifically, the top of the square rod 31 is penetrated by the armrest base 1 and then penetrated by the through hole 23 of the armrest cover 2, and then the buckle 21 is pivoted to the top of the square rod 31. By pulling the buckle 21, the lever principle is used to provide an upward force for the square rod 31, that is, by using a smaller force at the buckle 21, a larger upward pulling force can be provided to the square rod 31, thereby driving the square rod 32 to move upward, thereby creating a vacuum degree of the vacuum suction cup. At this time, the aforementioned push rod 4 has been pushed into the armrest base 1, and as mentioned above, the transparent observation window 24 appears green. When the vacuum degree of the vacuum suction cup gradually decreases during the use of the armrest, the push rod 4 will move along the elastic force of the torsion spring 14. Figure 4 The handrail 10 moves downward in the vertical direction, and the gear 12 tends to rotate counterclockwise and rotates slowly. The user can judge that the vacuum degree of the suction cup has begun to decrease by observing the red warning mark, thereby avoiding the risk of the handrail falling off.

[0043] Further Figures 1 to 3 As shown, the utility model preferably uses an armrest with two vacuum suction cups. The utility model can also be applied to an armrest with multiple suction cups or a single suction cup, as long as the number of warning unit components of the utility model is the same as the number of chassis components.

[0044] The vacuum suction cup handrail of the utility model can convert the thrust of the push rod into the sliding of the rack on the guide rail through the rack, gear and torsion spring, and then convert the translational sliding of the rack into the rotation of the gear, so that the red part and the green part of the warning mark can be switched and presented in different states, and the user can make risk judgments more intuitively; the green part used in the warning mark is installed together with the red part by side insertion, so that the two are always a whole in the rotation direction; the gear and the red part of the warning mark are designed as an integrated structure, which can further enhance the integrity of the assembly; the lower end of the push rod is provided with a threaded head, so that the overall length of the push rod can be fine-tuned, which can effectively improve the accuracy of the warning mark display. The utility model is particularly suitable for use in handrail suction cups, and can also be used in tool suction cups.

[0045] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments should fall within the scope of protection of the utility model.

Claims

1. A vacuum suction cup handrail, characterized in that: include: The chassis assembly is installed on the armrest base, and includes a rubber suction cup and a square pull rod. The square pull rod is vertically arranged at the center of the rubber suction cup and is sleeved with a spring. The vacuum required for installation is formed between the rubber suction cup and the suction cup housing by driving the square pull rod upward. The warning unit assembly includes a push rod and a gear rack transmission mechanism. The push rod drives the rack to drive the gear to rotate. When the vacuum degree changes, the warning mark above the gear is switched and presented on the surface of the armrest.

2. The vacuum suction cup handrail according to claim 1, characterized in that: The rack and pinion transmission mechanism comprises: A rack, which is slidable on a guide rail, and has an inclined surface on its lower surface; A gear is formed integrally with the red part of the warning sign, and the gear meshes with the rack; the green part of the warning sign is assembled with the red part by side insertion; the rotation of the gear causes the green part and the red part to switch between the presentation; A torsion spring is sleeved on the shaft of the gear. The torsion spring makes the red part appear in a natural state, and makes the green part appear in a compressed state.

3. The vacuum suction cup handrail according to claim 2, characterized in that: The guide rail is U-shaped and fixed in the armrest base, and a limit block is provided at the U-shaped opening to limit the rack within the range of the guide rail.

4. The vacuum suction cup handrail according to claim 2, characterized in that: The upper end of the push rod is an inclined surface, and the inclined surface is matched with the inclined surface of the rack.

5. The vacuum suction cup handrail according to claim 4, characterized in that: The lower end of the push rod is provided with a threaded section, which is matched with the internal thread of the push head and is used to adjust the height of the entire push rod.

6. The vacuum suction cup handrail according to claim 2, characterized in that: A transparent observation window is provided at the corresponding position where the green part and the red part are switched and presented, and the observation window is arranged on the upper cover surface of the armrest.

7. The vacuum suction cup handrail according to claim 6, characterized in that: Buckles are provided at both ends of the upper cover of the armrest and above the square pull rod, which are used to drive the square pull rod to move upward, thereby adsorbing the rubber suction cup on a smooth surface.

8. The vacuum suction cup handrail according to claim 7, characterized in that: The pull buckle is pivotally connected to the top of the square pull rod through a lock pin.

9. The vacuum suction cup handrail according to claim 1, characterized in that: The number of the warning unit assemblies is the same as the number of the chassis assemblies.

10. The vacuum suction cup handrail according to claim 1, characterized in that: The spring sleeved on the square pull rod is a tower-shaped spring.

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