A novel door-stopping folding arm device

Abstract

This utility model discloses a novel cancelable door-stopping folding arm device, comprising: a folding arm body, a telescopic arm, a support, a connecting rod, and an adjusting component. One end of the telescopic arm is detachably connected to the folding arm body, and the other end is hinged to the support. One end of the connecting rod is connected to a bearing of the folding arm body, and the other end is provided with a connecting sleeve fixedly connected to it. The adjusting component is installed inside the folding arm body. In this utility model, the folding arm adopts a combination of a telescopic arm and a folding arm body. Through the adjusting component provided inside the folding arm body, the magnetic reversing mechanism can be directly adjusted from the outside to complete the opening and closing of the door-stopping function of the folding arm device. The design of the telescopic arm takes into account the different actual usage length requirements of the folding arm under different conditions, and the actual usage length of the folding arm can be quickly adjusted by locking the knob.

Description

Technical Field

[0001] This utility model relates to the field of door closer technology, and in particular to a novel door stop folding arm device that can be cancelled. Background Technology

[0002] A door closer is a hydraulic device located on the top of the door. It is usually used in conjunction with a hinged arm to enable the door to close automatically. Existing hinged arms are connected to the door frame or wall at one end and to the door at the other end, which has the following problems: Firstly, most existing door closers and folding arms only have the function of automatically closing after the door is opened, and do not have the function of stopping the door for a long time. Their structure cannot meet the requirements of some markets, and is inconvenient in practical applications and cannot meet customer needs. For example, when people need to frequently enter and exit or transport goods, the current practice is to find a heavy block to keep the door open when the door leaf does not have the function of stopping the door for a long time. This is inconvenient and also poses certain safety hazards. Secondly, after the folding arm is installed, it is necessary to adjust the actual application length of the folding arm when the maximum opening degree of the door leaf needs to be adjusted. However, the length adjustment of the existing folding arm requires carrying a special screwdriver, which is inconvenient. In view of this, there is an urgent need for a new type of door-stopping folding arm device that can solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a novel door-stopping folding arm device that solves the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a novel door-stopping folding arm device, comprising: The folding arm consists of a main body, a telescopic arm, a support, a connecting rod, and an adjustment assembly. One end of the telescopic arm is detachably connected to the folding arm main body, and the other end is hinged to the support. One end of the connecting rod is connected to the bearing of the folding arm main body, and the other end is provided with a connecting sleeve that is fixedly connected to it. The adjustment assembly is installed inside the folding arm main body.

[0005] Preferably, the articulated arm body includes a housing, an end-face toothed cam, an upper bushing, a lower bushing, and a toothed sleeve. The housing includes a rectangular housing and two circular housings. The two circular housings are symmetrically fixedly connected to one end of the rectangular housing. The end-face toothed cam is located between the two circular housings. The upper bushing and the lower bushing are respectively interference-fitted with the two circular housings. One end of the toothed sleeve passes through the upper bushing and meshes with the end-face toothed cam. An arc-shaped retaining ring integrally formed with the toothed sleeve is provided on the side wall away from the end-face toothed cam. The connecting rod is movably connected to the arc-shaped retaining ring.

[0006] Preferably, the telescopic arm includes an inner arm, an outer arm, and a locking knob. One end of the inner arm is hinged to the support, and the other end is sleeved inside the outer arm. The locking knob passes through the side wall of the outer arm and contacts the inner arm, and the locking knob is threadedly connected to the outer arm.

[0007] Preferably, the telescopic arm has a connecting block and a pivot pin at the end away from the support. One end of the connecting block is fastened to the telescopic arm, and the other end is sleeved inside the housing. The pivot pin passes through the housing and the connecting block and is movably connected.

[0008] Preferably, the adjusting assembly includes a sealing nut, a spring, a magnetic reversing mechanism, a shaped bushing, and a settling roller. One end of the spring contacts the sealing nut, and the other end contacts the magnetic reversing mechanism. Both ends of the shaped bushing are in contact with the magnetic reversing mechanism and the settling roller, respectively, and the settling roller is connected to the end face toothed cam.

[0009] Preferably, the end of the toothed cam that contacts the set roller shaft has an arc-shaped notch that matches the set roller shaft.

[0010] Preferably, the magnetic reversing mechanism includes an integrally connected rotating drum and a reversing handle. The rotating drum is located inside the housing, and the end of the reversing handle away from the rotating drum penetrates the housing and is located outside the housing. The reversing handle and the housing are in clearance fit.

[0011] Preferably, the irregular bushing and the retaining roller are made of glass fiber reinforced plastic.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In this utility model, the folding arm adopts a combination of a telescopic arm and a folding arm body. Through the adjustment component provided in the folding arm body, the magnetic reversing mechanism can be directly adjusted from the outside to complete the opening and closing of the folding arm device's door stopping function. The telescopic arm is designed to take into account the different actual usage length requirements of the folding arm under different conditions, and the actual usage length of the folding arm can be quickly adjusted by locking the knob. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a novel door-stopping folding arm device; Figure 2 A schematic diagram of a novel decentralized structure for a door stop folding arm device that can be eliminated; Figure 3 This is a cross-sectional structural diagram of the magnetic commutation mechanism in an embodiment of the utility model.

[0014] In the diagram: 1. Folding arm body; 10. Housing; 100. Rectangular housing; 101. Circular housing; 11. End face toothed cam; 110. Arc-shaped notch; 12. Upper bushing; 13. Lower bushing; 14. Toothed sleeve; 140. Arc-shaped retaining ring; 2. Telescopic arm; 20. Inner arm; 21. Outer arm; 22. Locking knob; 23. Connecting block; 24. Shaft pin; 3. Support; 4. Connecting rod; 40. Connecting sleeve; 5. Adjusting assembly; 50. Sealing nut; 51. Spring; 52. Magnetic reversing mechanism; 520. Rotary drum; 521. Reversing handle; 53. Irregular bushing; 54. Tightening roller shaft. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see the appendix Figure 1-3 A novel door-folding arm device with cancelable stopping mechanism includes: The folding arm body 1, telescopic arm 2, support 3, connecting rod 4, and adjusting assembly 5 are provided. One end of the telescopic arm 2 is detachably connected to the folding arm body 1, and the other end is hinged to the support 3. One end of the connecting rod 4 is connected to the bearing of the folding arm body 1, and the other end is provided with a connecting sleeve 40 fixedly connected to it. The adjusting assembly 5 is installed inside the folding arm body 1. The folding arm device is constructed by combining the folding arm body 1 and the telescopic arm 2 with the support 3 and connecting rod 5 in the traditional structure. The telescopic arm 2 is used to adjust the actual application length of the folding arm to adapt to different usage environments, such as adjusting the opening degree of the door leaf or adapting to different door closers. The folding arm body 1, as an important component of the folding arm device, has an adjustment component 5 inside that can be easily adjusted to activate the door stop function, thereby enhancing the ease of use of the folding arm device.

[0017] Specifically, the articulated arm body 1 includes a housing 10, an end-face toothed cam 11, an upper bushing 12, a lower bushing 13, and a toothed sleeve 14. The housing 10 includes a rectangular housing 100 and two circular housings 101, which are symmetrically fixed to one end of the rectangular housing 100. The end-face toothed cam 11 is located between the two circular housings 101. The upper bushing 12 and the lower bushing 13 are respectively press-fitted to the two circular housings 101. One end of the toothed sleeve 14 passes through the upper bushing 12 and engages with the end-face toothed cam 11. The side wall of the toothed sleeve 14 away from the end-face toothed cam 11 is provided with a toothed sleeve that engages with the end-face toothed cam 11. The toothed sleeve 14 is integrally formed with an arc-shaped retaining ring 140, and the connecting rod 4 is movably connected to the arc-shaped retaining ring 140. The folding arm body 1 uses an upper bushing 12 and a lower bushing 13 to fix the basic position of the end face toothed cam 11, so that it is located at one end of the folding arm body 1, and is connected to the connecting rod 4 through the toothed sleeve 14. During the opening process, the relative position of the connecting rod 4 and the folding arm body 1 changes. At this time, the connecting rod 4 drives the toothed sleeve 14 to rotate relative to the housing 10 through the arc-shaped retaining ring 140. During this process, the lower end of the toothed sleeve 14 is always engaged with the end face toothed cam 11, that is to say, during the opening or closing of the door, the end face toothed cam 11 rotates with the rotation of the toothed sleeve 14.

[0018] Specifically, the telescopic arm 2 includes an inner arm 20, an outer arm 21, and a locking knob 22. One end of the inner arm 20 is hinged to the support 3, and the other end is sleeved inside the outer arm 21. The locking knob 22 passes through the side wall of the outer arm 21 and contacts the inner arm 20, and the locking knob 22 is threadedly connected to the outer arm 21.

[0019] Specifically, the telescopic arm 2 is provided with a connecting block 23 and a shaft pin 24 at the end away from the support 3. One end of the connecting block 23 is fastened to the telescopic arm 2, and the other end is sleeved in the housing 10. The shaft pin 24 passes through the housing 10 and the connecting block 23 and is movably connected. Considering that the actual application length of the folding arm device varies under different environments in practical applications, a telescopic arm 2 is used as part of the folding arm device. The actual application length of the folding arm device is controlled by adjusting the length of the inner arm 20 sleeved inside the outer arm 21. In order to facilitate the length of the telescopic arm 2, this invention abandons the traditional design of locking with screws and instead uses a locking knob 22 to replace the role of screws in the traditional structure. This design makes it possible for the folding arm device to be adjusted without the need for staff to carry a special screwdriver, thus enhancing the convenience of the device. At the same time, a connecting block 23 and a shaft pin 24 are used to connect the telescopic arm 2 and the folding arm body 1.

[0020] Specifically, the adjustment assembly 5 includes a sealing nut 50, a spring 51, a magnetic reversing mechanism 52, a shaped bushing 53, and a settling roller 54. One end of the spring 51 contacts the sealing nut 50, and the other end contacts the magnetic reversing mechanism 52. Both ends of the shaped bushing 53 are in contact with the magnetic reversing mechanism 52 and the settling roller 54, respectively. The settling roller 54 is connected to the end face toothed cam 11.

[0021] Specifically, the end face toothed cam 11 has an arc-shaped notch 540 that matches the clamping roller shaft 54 ​​at the end that contacts the clamping roller shaft 54.

[0022] Specifically, the magnetic reversing mechanism 52 includes an integrally connected rotating cylinder 520 and a reversing handle 521. The rotating cylinder 520 is located inside the housing 10, and the reversing handle 521, with one end away from the rotating cylinder 520, penetrates the housing 10 and is located outside the housing 10. The reversing handle 521 is in clearance fit with the housing 10. The magnetic reversing mechanism 52 is magnetic. When it is necessary to switch the opening and closing state of the door stop function, taking the door stop function as the active state as an example, the magnetic reversing mechanism 52 is magnetically attracted to the irregular bushings 53 and springs 51 at both ends. The elastic force of the springs 51 is transmitted to the irregular bushings 53 and then to the locking roller 54 through the magnetic reversing mechanism 52. Under the action of the thrust, the locking roller 54 is embedded in the arc-shaped notch 540 provided on the end face toothed cam 11 and has a certain preload. After the locking roller 54 is engaged in the arc-shaped notch 540, it forms a lock on the end face toothed cam 11. At this time, the end face toothed cam 11 cannot rotate. Then, through the meshing action of the end face toothed cam 11 and the toothed sleeve 14, the position of the toothed sleeve 14 is locked in the opposite direction, thereby locking the relative position of the connecting rod 4, realizing the purpose of stopping the door and ensuring that the door in the open state will not close automatically. When the door stop function needs to be closed, the rotating drum 520 is rotated 90° by rotating the reversing handle 521. At this time, the two ends of the magnetic reversing mechanism 52 are attracted to the inner arm of the housing 10. The elastic force of the spring 51 cannot be transmitted to the irregular bushing 53 through the magnetic reversing mechanism 52 to complete the position locking of the locking roller 54. In this state, the end face toothed cam 11 can rotate freely. That is to say, the door will be automatically closed under the action of the door closer in this state.

[0023] Specifically, the irregular bushing 53 and the fixing roller 54 are made of reinforced plastic containing glass fiber; Considering that the metal irregular bushing 53 and the fastening roller 54 may cause a lot of friction noise during use, they are made of glass fiber reinforced plastic instead, relying on the lubricity of the glass fiber reinforced plastic itself to reduce noise.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel door-stopping folding arm device, characterized in that, include: The folding arm body (1), telescopic arm (2), support (3), connecting rod (4) and adjustment component (5) are provided. One end of the telescopic arm (2) is detachably connected to the folding arm body (1), and the other end is hinged to the support (3). One end of the connecting rod (4) is connected to the bearing of the folding arm body (1), and the other end is provided with a connecting sleeve (40) fixedly connected to it. The adjustment component (5) is installed inside the folding arm body (1).

2. The novel cancelable door folding arm device according to claim 1, characterized in that: The articulated arm body (1) includes a housing (10), an end face toothed cam (11), an upper bushing (12), a lower bushing (13), and a toothed sleeve (14). The housing (10) includes a rectangular housing (100) and two circular housings (101). The two circular housings (101) are symmetrically fixed to one end of the rectangular housing (100). The end face toothed cam (11) is located between the two circular housings (101). The upper bushing (12) and the lower bushing (13) are respectively press-fitted to the two circular housings (101). One end of the toothed sleeve (14) passes through the upper bushing (12) and meshes with the end face toothed cam (11). An arc-shaped retaining ring (140) integrally formed with the toothed sleeve (14) is provided on the side wall of the toothed sleeve (14) away from the end face toothed cam (11). The connecting rod (4) is movably connected to the arc-shaped retaining ring (140).

3. A novel cancelable door-stopping folding arm device according to claim 2, characterized in that: The telescopic arm (2) includes an inner arm (20), an outer arm (21) and a locking knob (22). One end of the inner arm (20) is hinged to the support (3), and the other end is sleeved inside the outer arm (21). The locking knob (22) passes through the side wall of the outer arm (21) and contacts the inner arm (20). The locking knob (22) is threadedly connected to the outer arm (21).

4. A novel cancelable door-stopping folding arm device according to claim 2, characterized in that: The telescopic arm (2) is provided with a connecting block (23) and a pin (24) at one end away from the support (3). One end of the connecting block (23) is fastened to the telescopic arm (2), and the other end is sleeved in the housing (10). The pin (24) passes through the housing (10) and the connecting block (23) and is movably connected.

5. A novel cancelable door-stopping folding arm device according to claim 2, characterized in that: The adjustment assembly (5) includes a sealing nut (50), a spring (51), a magnetic reversing mechanism (52), a special-shaped bushing (53), and a settling roller (54). One end of the spring (51) is in contact with the sealing nut (50), and the other end is in contact with the magnetic reversing mechanism (52). Both ends of the special-shaped bushing (53) are in contact with the magnetic reversing mechanism (52) and the settling roller (54), respectively. The settling roller (54) is connected to the end face toothed cam (11).

6. A novel cancelable door folding arm device according to claim 5, characterized in that: The end face toothed cam (11) has an arc-shaped notch (110) that matches the clamping roller (54) at the end that contacts the clamping roller (54).

7. A novel cancelable door-stopping folding arm device according to claim 5, characterized in that: The magnetic reversing mechanism (52) includes an integrally connected rotating cylinder (520) and a reversing handle (521). The rotating cylinder (520) is located inside the housing (10), and the reversing handle (521) is located outside the housing (10) with one end away from the rotating cylinder (520) penetrating the housing (10). The reversing handle (521) is in clearance fit with the housing (10).

8. A novel cancelable door-stopping folding arm device according to claim 5, characterized in that: The irregular bushing (53) and the fixing roller (54) are made of glass fiber reinforced plastic.

Images