Limiting anti-pinch structure of rocker arm portal crane

Abstract

A rocker arm door machine limiting anti-pinch structure comprises a door machine body, a protective pipe is arranged on the door machine body, a telescopic rod is movably arranged in the protective pipe, one end of the telescopic rod is in transmission connection with the door machine body, the other end of the telescopic rod is connected with a fixing lock ring which abuts against the end of the protective pipe in a limiting mode, and an anti-pinch end cover is assembled and connected to the end of the protective pipe. One end of the anti-pinch end cover is provided with an anti-pinch slope in a surrounding mode, the slope bottom of the anti-pinch slope is close to the fixed lock ring, and the slope shoulder of the anti-pinch slope is away from the fixed lock ring. According to the limiting anti-pinch structure, when the fingers of a user are placed on the outer surface of the telescopic rod and the fixing lock ring moves to the anti-pinch end cover, the fixing lock ring can push the fingers of the user onto the anti-pinch slope, the situation that the fingers are clamped between the fixing lock ring and the protection pipe, and consequently the human body is seriously injured is avoided, the hand-pinch-preventing protection function is achieved, the safety risk is reduced, and the safety of the user is improved. And the safety standard can be met, and the safe use standard is achieved.

Description

Technical Field

[0001] The utility model relates to the field of rocker door machines, in particular to a position limiting and anti-pinch structure of a rocker door machine. Background Art

[0002] The current structure of the rocker door machine is as follows Figure 1 As shown, it includes a door opener main body, a protective tube 2 is provided on the door opener main body, a telescopic rod 3 is movably provided in the protective tube 2, and one end of the telescopic rod is transmission-connected to the door opener main body, and the other end is connected to a fixed lock ring 4 which forms a limit against the end of the protective tube. However, during use, when the user's finger F is placed on the telescopic rod between the fixed lock ring and the protective tube, the telescopic rod retracts into the protective tube and drives the fixed lock ring toward the protective tube, which may cause the user's finger to be clamped between the fixed lock ring and the end of the protective tube, and the force of the door opener main body will crush the user's finger bones, causing serious personal injury. The rocker door machine with this structure obviously does not meet the safety requirements and has potential safety hazards. Therefore, the current rocker door machine structure needs to be further improved. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned existing problems and provide a simple and reasonable rocker door machine limit anti-pinch structure, which mainly plays an anti-pinch hand protection function and reduces safety risks.

[0004] The rocker door machine position limiting and anti-pinch structure includes a door opener main body, a protective tube is provided on the door opener main body, a telescopic rod is movably provided in the protective tube, and one end of the telescopic rod is transmission-connected to the door opener main body, and the other end is connected to a fixed lock ring that forms a position limit against the end of the protective tube, and the end of the protective tube is assembled and connected with an anti-pinch end cover, and one end of the anti-pinch end cover is surrounded by an anti-pinch slope with a slope bottom leaning toward the fixed lock ring and a slope shoulder away from the fixed lock ring.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the anti-pinch slope surface is an inclined arc surface or an inclined plane.

[0007] As a further solution, the width of the anti-pinch slope is H1, and H1 ≥ 25 mm.

[0008] As a further solution, the anti-pinch end cover is provided with a supporting end surface at one end corresponding to the bottom of the slope, which is against the fixed locking ring. The joint between the supporting end surface and the anti-pinch slope surface is provided with a chamfer, and the chamfer forms a sliding arc surface.

[0009] As a further solution, the thickness of the supporting end surface is H2, and H2≤2mm.

[0010] As a further scheme, the other end of the anti-pinch end cover is provided with a connecting sleeve, an inner threaded portion is formed on the inner wall surface of the connecting sleeve, an outer threaded portion is formed on the end portion of the protective pipe, and the anti-pinch end cover and the protective pipe are assembled and connected through the screwing of the inner threaded portion and the outer threaded portion.

[0011] As a further scheme, a plurality of anti-skid grooves are arranged on the joint between the connecting sleeve and the anti-pinch slope surface.

[0012] As a further scheme, the anti-pinch end cover is integrally formed by a metal material, and at least the anti-pinch slope surface of the outer surface of the anti-pinch end cover is subjected to smooth treatment.

[0013] As a further scheme, the fixing lock ring comprises a first half ring body and a second half ring body, a bolt hole is formed on the end portion of the first half ring body, a bolt through hole is formed on the end portion of the second half ring body, the first half ring body and the second half ring body are in loose fit through the bolt passing through the bolt through hole and the bolt hole, and the fixing lock ring is adjustably connected to the telescopic rod.

[0014] As a further scheme, an inner end pipe is embedded in the port of the protective pipe, a sealing groove is formed on the inner wall surface of the inner end pipe, a sealing ring is sleeved in the sealing groove, and an elastic sealing lip abutting against the outer wall surface of the telescopic rod is arranged on the sealing ring.

[0015] The anti-pinch structure of the rocker door machine position limiting function, the anti-pinch structure is placed on the outer surface of the telescopic rod, and when the fixing lock ring moves to the anti-pinch end cover, the fixing lock ring can push the user's fingers onto the anti-pinch slope surface, prevent the fingers from being clamped between the fixing lock ring and the protective pipe, and cause serious human body injury, thereby achieving the anti-pinch hand protection function, reducing the safety risk, and meeting the safety standard. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a background technical structure schematic diagram in the utility model.

[0017] Figure 2 It is a structure schematic diagram of embodiment one in the utility model.

[0018] Figure 3 It is a structure schematic diagram of the fingers placed on the telescopic rod in the utility model.

[0019] Figure 4 It is a structure schematic diagram of the fingers pushed onto the anti-pinch slope surface.

[0020] Figure 5 It is a sectional structure schematic diagram of the anti-pinch structure in the utility model.

[0021] Figure 6The utility model discloses a structure schematic diagram of preventing clamping end cover.

[0022] Figure 7 For Figure 5 The structure schematic diagram of preventing clamping end cover.

[0023] Figure 8 The utility model discloses a structure schematic diagram of preventing clamping end cover.

[0024] Figure 9 The utility model discloses a structure schematic diagram of preventing clamping end cover. Specific implementation

[0025] The utility model discloses a structure schematic diagram of preventing clamping end cover.

[0026] Reference Figures 2 to 8 As shown in the figure, the rocker door machine limiting anti-pinch structure includes a door opener main body 1, the door opener main body 1 is provided with a protective tube 2, the protective tube 2 is movably provided with a telescopic rod 3, one end of the telescopic rod 3 is drivingly connected with the door opener main body 1, the other end is connected with a fixed lock ring 4 which is in abutment with the end of the protective tube 2, the end of the protective tube 2 is assembled and connected with an anti-pinch end cover 5, one end of the anti-pinch end cover 5 is provided with an anti-pinch slope surface 51 which has a slope bottom close to the fixed lock ring 4 and a slope shoulder away from the fixed lock ring 4, and the anti-pinch slope surface 51 is an inclined arc surface.

[0027] When the user's finger is placed on the outer surface of the telescopic rod 3 and the fixed lock ring 4 moves towards the anti-pinch end cover 5, the fixed lock ring 5 can push the user's finger F onto the anti-pinch slope surface 51, preventing the finger F from being clamped between the fixed lock ring 5 and the protective tube 2 and causing serious human injury, thereby achieving the function of preventing pinching and protecting the hand, reducing the safety risk, meeting the safety standard, and meeting the safety standard.

[0028] The width of the anti-pinch slope surface 51 is H1, and H1 is greater than or equal to 25mm, and the anti-pinch slope surface 51 can meet the safety requirements above the width value.

[0029] One end of the anti-pinch end cover 5 corresponding to the slope bottom is provided with an abutting end surface 52 which is in abutment with the fixed lock ring 4, the junction between the abutting end surface 52 and the anti-pinch slope surface 51 is provided with a chamfer, and the chamfer forms a guide sliding arc surface 53; this structure can reduce the thickness of the abutting end surface 52 to the maximum by using the chamfer, so that even if the user's finger is clamped between the fixed lock ring 5 and the protective tube 2, only a small part of the skin will be clamped, and the finger bones will not be clamped, and the guide sliding arc surface 53 formed by the chamfer can help the finger to be pushed onto the anti-pinch slope surface 51 more easily when the finger is squeezed by the fixed lock ring 5, reducing the possibility of clamping the skin and improving the safety.

[0030] The thickness of the abutting end surface 52 is H2, and H2≤2mm, and the abutting end surface 5 can keep the finger in the worst case only be clamped with a small part of the skin and flesh, and not deep into the height of the phalanx.

[0031] The other end of the anti-pinch end cover 5 is provided with a connecting sleeve 54, and an inner threaded portion 55 is formed in the inner wall surface of the connecting sleeve 54. An outer threaded portion 21 is formed in the end portion of the protective pipe 2. The anti-pinch end cover 5 is connected with the protective pipe 2 by screwing the inner threaded portion 55 of the connecting sleeve 54 with the outer threaded portion 21. The anti-pinch end cover 5 is connected with the protective pipe 2 by screwing. The anti-pinch end cover 5 is convenient to install and disassemble, simple in structure, and low in processing difficulty.

[0032] The port of the protective pipe 2 is embedded with an inner end pipe 6. A sealing groove is formed in the inner wall surface of the inner end pipe 6. A sealing ring 7 is sleeved in the sealing groove. An elastic sealing lip 71 of the sealing ring 7 is elastically abutted against the outer wall surface of the telescopic rod 3. The sealing lip 71 can seal the gap between the anti-pinch end cover 5 and the telescopic rod 3, and has a waterproof and dustproof effect.

[0033] A plurality of anti-skid grooves 56 are formed in the joint between the connecting sleeve 54 and the anti-pinch slope surface 51. The anti-skid grooves 56 have an anti-skid effect when the anti-pinch end cover 5 is tightened and loosened, are simple to operate, and have a good anti-skid effect.

[0034] The anti-pinch end cover 5 is integrally processed and formed by a metal material. At least the anti-pinch slope surface 51 of the outer surface of the anti-pinch end cover 5 is smoothly treated. The metal material is preferably aluminum profile. The smooth treatment of the anti-pinch slope surface 51 helps to reduce friction when the finger is pushed, and the finger is more easily slipped into the anti-pinch slope surface 51.

[0035] The fixed lock ring 4 includes a first half ring body 41 and a second half ring body 42. A bolt hole 411 is formed in the end portion of the first half ring body 41. A bolt 43 through hole 421 is formed in the end portion of the second half ring body 42. The first half ring body 41 and the second half ring body 42 are connected by the bolt 43 passing through the bolt 43 through hole 421 and the bolt hole 411. The first half ring body 41 and the second half ring body 42 are in loose fit, and the fixed lock ring 4 is adjustably connected to the telescopic rod 3. The opening angle of the rocker door can be adjusted by adjusting the position of the fixed lock ring 4 on the telescopic rod 3. The fixed lock ring 4 is simple to adjust, has a conventional structure, and is low in use cost. Example two

[0036] Example two is different from example one in that, as shown in Figure 9 The anti-pinch slope surface 51 is an inclined plane. However, the inclination angle of the plane can be adjusted according to the test during production, so as to prevent the inclination angle from being too large and causing the finger to be clamped between the fixed lock ring 4 and the anti-pinch slope surface 51 even if the finger is pushed onto the anti-pinch slope surface 51.

[0037] The above is the preferred scheme of the utility model, and the basic principle, main features and advantages of the utility model are displayed and described. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for the purpose of illustrating the principle of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rocker door machine limiting anti-pinch structure, comprising a door opener main body (1), a protective pipe (2) is arranged on the door opener main body (1), a telescopic rod (3) is movably arranged in the protective pipe (2), one end of the telescopic rod (3) is drivingly connected with the door opener main body (1), the other end of the telescopic rod (3) is connected with a fixed locking ring (4) which limits the end of the protective pipe (2), characterized in that: The end of the protection pipe (2) is assembled with an anti-pinch end cover (5), one end of the anti-pinch end cover (5) is provided with an anti-pinch slope surface (51) which is away from the fixed lock ring (4) and whose bottom is close to the fixed lock ring (4).

2. The rocker door machine limit anti-pinch structure of claim 1, wherein: The anti-pinch slope surface (51) is an inclined arc surface or an inclined plane.

3. The rocker door machine limit anti-pinch structure of claim 1, wherein: The width of the anti-pinch slope surface (51) is H1, and H1≥25mm.

4. The swing door machine anti-pinch structure of claim 1, wherein: The end of the anti-pinch end cover (5) corresponding to the bottom is provided with an abutting end surface (52) which abuts against the fixed lock ring (4), and the joint between the abutting end surface (52) and the anti-pinch slope surface (51) is provided with a chamfer which forms a guide sliding arc surface (53).

5. The rocker door machine limit anti-pinch structure of claim 4, wherein: The thickness of the abutting end surface (52) is H2, and H2≤2mm.

6. The swing door machine anti-pinch structure of claim 1, wherein: The other end of the anti-pinch end cover (5) is provided with a connecting sleeve (54), the inner wall surface of the connecting sleeve (54) is provided with an internal thread part (55), the end of the protection pipe (2) is provided with an external thread part (21), the anti-pinch end cover (5) and the protection pipe (2) are assembled by screwing the internal thread part (55) and the external thread part (21).

7. The rocker door machine limit anti-pinch structure of claim 6, wherein: The joint between the connecting sleeve (54) and the anti-pinch slope surface (51) is provided with a plurality of anti-slip grooves (56) which are arranged equidistantly in the circumferential direction.

8. The swing door machine anti-pinch structure of claim 1, wherein: The anti-pinch end cover (5) is integrally processed and formed by a metal material, and at least the anti-pinch slope surface (51) of the outer surface of the anti-pinch end cover (5) is smoothed.

9. The swing door machine anti-pinch structure of claim 1, wherein: The fixed lock ring (4) comprises a first half ring body (41) and a second half ring body (42), the end of the first half ring body (41) is provided with a bolt hole (411), the end of the second half ring body (42) is provided with a bolt (43) through hole (421), the first half ring body (41) and the second half ring body (42) are connected by the bolt (43) passing through the bolt (43) through hole (421) and the bolt hole (411), so that the first half ring body (41) and the second half ring body (42) are loosely connected, and the fixed lock ring (4) is adjustably connected to the telescopic rod (3).

10. The swing door machine anti-pinch structure of claim 1, wherein: The end of the protection pipe (2) is embedded with an inner end pipe (6), the inner wall surface of the inner end pipe (6) is provided with a sealing groove, the sealing groove is provided with a sealing ring (7), and the sealing ring (7) is provided with an elastic sealing lip (71) which abuts against the outer wall surface of the telescopic rod (3).

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