TWI746203B - door closer - Google Patents

Abstract

The present invention is a door closer, which is used to install on a door panel and a door frame. A groove is formed above the door panel. The door closer includes a buffer device arranged in the groove; a sliding block connected to the buffer device and located In the groove, the sliding block can move linearly in the groove; a connecting rod, one end of which is fixed to the sliding block; a pivoting seat, which is arranged on the door frame, the other end of the connecting rod is connected to the pivoting seat and can be opposite to The pivot seat rotates; when the present invention is set in the groove on the door panel, in addition to the function of being hidden and not exposed, when the cushioning device is malfunctioning or not applicable, it can also be modified only for the cushioning device without the need The entire set of components are removed for replacement, which has the effect of improving construction efficiency, saving costs and high versatility.

Description

door closer

The invention relates to a door closer, in particular to a door closer that can be installed in a groove on the top surface of a door panel, has a concealment effect and is easy to replace.

Among the prior art door closers, there is an externally-mounted door closer with a cushioning effect, such as the new announcement CN 210858366U in China. The top surface is provided with a groove, the bottom surface of the groove is provided with an oil injection hole, and the bottom end of the oil injection hole is connected with the inner cavity of the main body of the buffer door closer, the top of the base is connected with a top cover, and the inner cavity of the oil injection hole is fixedly connected with a fixing seat The surface is disassembled and connected to a support frame, and the oil injection hole can facilitate the staff to add lubricating oil into the main body of the buffer door closer, and the service life of the parts can be increased by the lubricating oil.

There is also an electronically controlled buffer door closer, such as the Chinese Invention Patent Announcement CN 106837041A. It includes a guide rail, a slider, a crank, a hydraulic switch, a first connecting rod and a second connecting rod. The sliding block is slidably arranged on the guide rail, the end of the first connecting rod is hinged on the guide rail, the crank is hinged between the sliding block and the first connecting rod, and the second connecting rod is hinged on the first connecting rod. The hydraulic pressure is vertical. Installed on the guide rail and connected with the sliding block, the first connecting rod is provided with a first electromagnet, and the second connecting rod is provided with a second electromagnet that cooperates with the first electromagnet. The effect of buffering the door body is achieved between the cabinet body and the door body.

However, after the installation of the external door closer, because the whole mechanism is exposed, it is easy to affect the appearance, and the door panel needs to be drilled during the installation process. When you want to replace it with a door closer of a different specification, the original left Drilling will also affect the aesthetics. On the contrary, if the aforementioned hidden door closer is used, although it has a better effect on the overall aesthetics, but because the overall mechanism adopts a closed design, when the buffer elements such as hydraulic or pneumatic devices fail or the spring elasticity is fatigued At the same time, the entire set of door closers needs to be updated and a single element cannot be replaced, which increases the cost of use and the difficulty of maintenance. In addition, different door closers need to be matched with different specifications of door closers. When the door closers are installed When it is found to be unsuitable, the entire set must be disassembled for replacement, which causes inconvenience in assembly; therefore, the overall structure of the door closer of the prior art has the aforementioned problems and shortcomings, and it needs to be improved.

In view of the shortcomings of the prior art, the present invention provides a door closer, which achieves the purpose of hiding and facilitating maintenance and replacement of components due to the linear movement provided in the groove on the top surface of the door panel and on the door frame of the present invention.

In order to achieve the above-mentioned purpose of the invention, the technical means adopted by the present invention is to design a door closer to be installed on a door panel and a door frame. The door frame has an inner side surface and an outer side surface, the door panel is pivoted on the outer side surface of the door frame by a hinge, and the door closer includes: A buffer device, comprising a fixing base and a telescopic element, the fixing base is arranged in the groove, the telescopic element is connected to the fixing base and can move linearly with respect to the fixing base; A slider having two opposite end surfaces and a top surface, the two end surfaces are adjacent to the top surface, and the slider is fixed to the telescopic member with one of the end surfaces and moves in the groove; A connecting rod, one end of which is fixed on the top surface of the slider; A pivot seat includes a base and a pivot member, the pivot member is disposed on the base, the other end of the connecting rod is connected to the pivot member and can rotate relative to the pivot member, the base The seat is fixed on the inner side of the door frame.

In order to achieve the above-mentioned object of the invention, the present invention further provides a door closer for mounting on a door panel and a door frame, the door panel has a side surface, and the door closer includes: A sliding rail arranged on the side of the door panel; A buffer device, comprising a fixing base and a telescopic element, the fixing base is arranged in the slide rail, the telescopic element is connected to the fixing base and can move linearly with respect to the fixing base; A slider having two opposite end surfaces and a top surface, the two end surfaces are adjacent to the top surface, and the slider is fixed to the telescopic member with one of the end surfaces and moves in the groove; A connecting rod, one end of which is fixed on the top surface of the slider; A pivot seat, comprising a base and a pivot member, the base is fixed to the door frame, the pivot member is disposed on the base, and the other end of the connecting rod is connected to the pivot member and can be opposed to each other The pivotal member rotates.

Furthermore, the door closer further includes a sliding rail, the sliding rail is arranged in the groove, the buffer device and the sliding block are both located in the sliding rail, and the connecting rod abuts against the sliding rail .

Furthermore, the door closer further includes a first limiting portion and a second limiting portion. The first limiting portion and the second limiting portion are protruded on the sliding rail at intervals, and the sliding The block is located between the first limiting portion and the second limiting portion.

Furthermore, in the door closer, the sliding block is formed with one end screw hole and an upper screw hole, the end screw hole penetrates the side surface of the sliding block, and the telescopic member is opposite to the other end of the fixing seat Formed with an external thread, the telescopic member is combined with the end screw hole with its external thread, one end of the connecting rod penetrates a first connecting hole, the first connecting hole is aligned with the upper screw hole, and a screw passes through the The first connecting hole is locked to the upper screw hole.

Furthermore, in the door closer, the base is a single body and has a through hole, the pivot member penetrates a pivot hole, the pivot hole communicates with the through hole, and the other end of the connecting rod penetrates A second connecting hole, the second connecting hole is aligned with the pivot hole, a pivot rod is formed with an internal thread, the pivot rod passes through the pivot hole and the through hole, and a screw passes through the second The connecting hole is locked to the pivot rod.

Furthermore, the door closer further includes a dust cover which is sleeved on the telescopic part and located between the fixing base and the sliding block.

The advantage of the present invention is that when the present invention with linear movement characteristics is arranged in the groove on the door panel, it has the function of being hidden and not exposed. When the buffering device is faulty or not applicable, it can also only be used for the buffering device. Modification, without the need for the entire set of components to be removed for replacement, has the effect of improving construction efficiency and saving costs; the present invention can also be installed on the side of the door panel, and different installation methods and installation suitable buffers can be adjusted for various door panels of different specifications. The device has a high degree of versatility.

The following describes the technical means adopted by the present invention to achieve the intended purpose of the invention in conjunction with the drawings and the preferred embodiments of the present invention.

Please refer to Figures 1, 2 and 6, the door closer of the first embodiment of the present invention is used to install on a door panel 60 and a door frame 70. The door panel 60 has a top surface at an upper position and is adjacent to A groove 61 is recessed on the top surface. The door frame 70 has an inner side and an outer side. The door panel 60 is pivoted on the outer side of the door frame 70 by a hinge. The door closer includes a slide rail 10, A buffer device 20, a sliding block 30, a connecting rod 40 and a pivot seat 50.

Please refer to Figure 2, Figure 3 and Figure 6, the slide rail 10 is a U-shaped elongated rod body, the inner side has two opposite side surfaces and a bottom surface, the top ends of the two side surfaces respectively protrude laterally There is a supporting portion 11 extending along the two ends of the slide rail 10. One end of the slide rail 10 penetrates a positioning hole 12, the positioning hole 12 penetrates two opposite sides of the slide rail 10, and the other end of the slide rail 10 penetrates a mounting Hole 15, the mounting hole 15 penetrates two opposite sides of the slide rail 10; the bottom surface of the slide rail 10 protrudes with a first limiting portion 13 and a second limiting portion 14, the first limiting portion 13 and the second limiting portion 14 are all triangular bodies and are arranged at intervals along the axial direction of the slide rail 10. The first limiting portion 13 is located between the positioning hole 12 and the second limiting portion 14, but not limited to this, the slide rail 10, the first The shapes of the first limiting portion 13 and the second limiting portion 14 can be changed according to user requirements.

The buffer device 20 is a pneumatic rod assembly, which includes a fixing seat 21 and a telescopic member 22. One end of the fixing seat 21 has a coupling portion 211. The coupling portion 211 is a rod body and penetrates a coupling hole 212, which A threaded pivot rod 23 passes through the positioning hole 12 on one side of the slide rail 10 and the coupling hole 212 of the buffer device 20, and then uses a screw 24 threaded through the other positioning hole 12 to connect its external thread with the pivot rod The internal threads of 23 are combined, so that the fixing seat 21 is pivoted on the slide rail 10. The aforementioned pivot rod 23 is a standard component of the prior art, and its detailed structure will not be repeated; the telescopic member 22 is a rod body, one end of which is connected to the fixed The base 21 can move linearly with respect to the fixed base 21. The telescopic member 22 generates a return force to move away from the fixed base 21 by the air pressure accumulated in the fixed base 21. The telescopic member 22 is formed with an outer end relative to the other end of the fixed base 21 Thread. In this embodiment, the buffer device 20 is a pneumatic rod assembly, and a dust cover 25 can be sleeved on the telescopic member 22 so that the telescopic member 22 has the effect of preventing dust, but it is not limited to this, and may also be hydraulic The rod assembly or the spring assembly, the aforementioned components are standard components in the prior art, and the detailed structure thereof will not be repeated, and only needs to be able to achieve the effect of expansion and contraction.

The slider 30 is a rectangular block with two opposite end surfaces, two side surfaces, a top surface and a bottom surface. The two end surfaces and two side surfaces are located between the top surface and the bottom surface. The shape of the slider 30 corresponds to the shape of the slide rail 10. The slider 30 moves in the slide rail 10. The slider 30 is formed with one end screw hole 31 and an upper screw hole 32. The end screw hole 31 penetrates one end surface of the slider 30. The end screw hole 31 is formed with an inner Thread, the telescopic member 22 is combined with the internal thread of the end screw hole 31 by its external thread. The upper screw hole 32 is penetrated on the top surface of the slider 30 and is formed with internal threads. The slider 30 is located in the slide rail 10 and interposed therebetween. Between the first limiting portion 13 and the second limiting portion 14, the slider 30 can selectively abut on the first limiting portion 13 or the second limiting portion 14, and the bottom surface of the slider 30 is convexly provided with two sliding The strip 33 and each sliding strip 33 are respectively located on two opposite sides of the bottom surface and extend along the direction of the two ends of the sliding block 30, and the sliding strip 33 abuts against the sliding rail 10.

Please refer to FIG. 2 and FIG. 3, the connecting rod 40 is a long strip-shaped piece, the two ends of which respectively penetrate a first connecting hole 41 and a second connecting hole 42, the first connecting hole 41 is aligned with the slider 30 The upper screw hole 32 is inserted into the first connecting hole 41 by a locking member and locked to the upper screw hole 32 so that the connecting rod 40 is fixed to the slider 30, and the connecting rod 40 abuts against the support of the slide rail 10. Section 11.

Please refer to Figures 2, 3 and 6, the pivoting seat 50 includes a base 51 and a pivoting member 52. The base 51 is a single body, the base 51 penetrates a through hole 511, and the pivoting member 52 is a ring. The pivotal member 52 penetrates through a pivotal hole 521, and the pivotal hole 521 communicates with the through hole 511. The second connecting hole 42 of the connecting rod 40 is aligned with the pivotal hole 521. The post 53 passes through the pivot hole 521 and extends into the through hole 511, and uses a screw 54 to pass through the second connecting hole 42 and combine its external thread with the internal thread of the pivot rod 53, so that the connecting rod 40 pivots. The base 51 of the pivoting seat 50 is fixed to the door frame 70 by a locking member. In detail, the upper edge of the inner side of the door frame 70 is fixed at a position adjacent to the door panel 60.

Please refer to Figures 2 and 3, when the present invention is installed, a mounting rod (not shown in the figure) can be fixed between the two opposite mounting holes 15, and a support rod (not shown in the figure) ) Is set between the slider 30 and the mounting rod, and the two ends of the support rod press against the slider 30 and the mounting rod to pre-press the buffer device 20, so that the connecting rod 40 has a pivotal seat 50 at one end that can be more convex Extending outside the slide rail 10, it is convenient for users to install the present invention.

When the present invention is used, when the door panel 60 is opened or closed, it has an open state and a closed state. Please refer to Figures 3 and 4. In the open state, the user continues to apply a direction toward the door opening direction to the door panel 60. The force causes the telescopic member 22 to move toward the fixed seat 21, the slider 30 moves synchronously to abut on the first limit part 13, and the first limit part 13 is used to set the stop position of the slider 30 in the open state ; Please refer to Figure 5, when you want to close the door panel 60, the user only needs to let go of the hand, the telescopic member 22 is moved away from the fixed seat 21 by the internal air pressure of the fixed seat 21, so that the door panel 60 due to the telescopic member 22 Pivot, the slider 30 gradually slides toward the direction of the second limiting portion 14; please refer to Figures 2 and 6, as shown in FIG. 2 and FIG. The two limit parts 14 are used to set the moving stop position of the slider 30 in the closed state, so as to achieve the linear movement characteristic of the present invention, and the present invention can be arranged in the groove 61 on the door panel 60 to be hidden and not exposed. In addition to the effect, when the buffer device 20 fails or is found to be inapplicable after installation, it can also be replaced only for the buffer device 20, without the need to dismantle and replace the entire set of components, which improves construction efficiency and saves costs. The sliding strip 33 on the bottom surface of the slider 30 can reduce the friction force when the slider 30 moves and improve the smoothness of its movement.

In other embodiments, the buffer device 20, the sliding block 30 and the connecting rod 40 may be directly arranged in the groove 61 of the door panel 60 (not shown in the figure) without the sliding rail 10, in other words, the groove 61 It is regarded as a sliding rail 10, and the buffer device 20, the sliding block 30, the first limiting portion 13 and the second limiting portion 14 originally provided in the sliding rail 10 are separately provided in the groove 61.

Please refer to Figures 7 and 8, which is the second embodiment of the present invention, in which the buffer device 20A, the sliding block 30A, the connecting rod 40A and the pivot seat 50A are the same as the first embodiment, the main difference lies in the slide rail 10A The side surface of the door panel 60A is adjacent to the top surface, and the pivot seat 50A cooperates with the slide rail 10A to move to an appropriate position. When there is no groove, the user can install the present invention in this setting mode, and the effect of automatic door closing can also be achieved.

In the foregoing process, since the present invention includes two fixing methods installed in the groove 61 of the door panel 60 and installed on the side of the door panel 60, different installation methods can be adjusted for various door panels 60 of different specifications and suitable buffer devices 20 can be installed. , With a high degree of versatility.

The above is only the preferred embodiment of this creation, and does not limit this creation in any form. Although this creation has been disclosed as above in preferred embodiments, it is not intended to limit this creation. Any technical field has Generally knowledgeable persons, without departing from the scope of this creative technical solution, can use the technical content disclosed above to make slight changes or modifications as equivalent embodiments of equivalent changes. However, any content that does not deviate from this creative technical solution shall be based on this Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the creation still fall within the scope of the technical solution for creation.

10: Slide rail 11: Support 12: Positioning hole 13: The first limit part 14: The second limit part 15: Mounting hole 20: Buffer device 20A: buffer device 21: fixed seat 211: Joint 212: Combination hole 22: Telescopic parts 23: pivot lever 24: Screw 25: Dust cover 30: Slider 30A: Slider 31: End screw hole 32: Upper screw hole 33: Slider 40: connecting rod 40A: connecting rod 41: The first connecting hole 42: second connecting hole 50: pivot seat 50A: pivot seat 51: Pedestal 511: Piercing 52: pivot 521: Pivot Hole 53: pivot lever 54: Screw 60: door panel 61: Groove 70: door frame

Fig. 1 is a perspective view of the first embodiment of the present invention. Figure 2 is an exploded view of the first embodiment of the present invention. Fig. 3 is a cross-sectional view of the first embodiment of the present invention. Fig. 4 is a schematic diagram of the door opening state of the first embodiment of the present invention. Fig. 5 is a schematic diagram of the pivoting state of the first embodiment of the present invention. Fig. 6 is a schematic diagram of the closed state of the first embodiment of the present invention. Fig. 7 is a schematic top view of the second embodiment of the present invention. Fig. 8 is a schematic diagram of the arrangement of the second embodiment of the present invention.

10: Slide rail

30: Slider

40: connecting rod

50: pivot seat

Claims (11)

A door closer is used to be installed on a door panel and a door frame. The door panel has a top surface at an upper position. The top surface is recessed with a groove. The door frame has an inner side surface and an outer side surface. It is pivoted on the outer side surface of the door frame by a hinge, and the door closer includes: A buffer device, comprising a fixing base and a telescopic element, the fixing base is arranged in the groove, the telescopic element is connected to the fixing base and can move linearly with respect to the fixing base; A slider having two opposite end surfaces and a top surface, the two end surfaces are adjacent to the top surface, and the slider is fixed to the telescopic member with one of the end surfaces and moves in the groove; A connecting rod, one end of which is fixed on the top surface of the slider; A pivot seat includes a base and a pivot member, the pivot member is disposed on the base, the other end of the connecting rod is connected to the pivot member and can rotate relative to the pivot member, the base The seat is fixed on the inner side of the door frame. The door closer according to claim 1, further comprising a sliding rail, the sliding rail is arranged in the groove, the buffer device and the sliding block are both located in the sliding rail, and the connecting rod abuts against the sliding rail . The door closer according to claim 2, which further includes a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are protruded on the sliding rail at intervals, and the sliding The block is located between the first limiting portion and the second limiting portion. The door closer according to claim 3, wherein the slider is formed with one end screw hole and an upper screw hole, the end screw hole penetrates the side surface of the slider, and the telescopic member is opposite to the other end of the fixing seat Formed with an external thread, the telescopic member is combined with the end screw hole with its external thread, one end of the connecting rod penetrates a first connecting hole, the first connecting hole is aligned with the upper screw hole, and a screw passes through the The first connecting hole is locked to the upper screw hole. The door closer according to any one of claims 1 to 4, wherein the base is a one-piece body with a through hole, the pivot member penetrates a pivot hole, the pivot hole communicates with the through hole, and the connection The other end of the rod penetrates a second connecting hole, the second connecting hole is aligned with the pivot hole, a pivot rod is formed with an internal thread, the pivot rod penetrates the pivot hole and the through hole, and a screw The second connecting hole is penetrated and locked to the pivot rod. The door closer according to claim 5, further comprising a dust cover, the dust cover is sleeved on the telescopic part and located between the fixing base and the sliding block. A door closer, which is used to install on a door panel and a door frame, the door panel has a side surface, and the door closer includes: A sliding rail arranged on the side of the door panel; A buffer device, comprising a fixing base and a telescopic element, the fixing base is arranged in the slide rail, the telescopic element is connected to the fixing base and can move linearly with respect to the fixing base; A sliding block having a side surface and a top surface, the sliding block is fixed to the telescopic part by the side surface and located in the sliding rail; A connecting rod, one end of which is fixed on the top surface of the slider; A pivot seat, comprising a base and a pivot member, the base is fixed to the door frame, the pivot member is disposed on the base, and the other end of the connecting rod is connected to the pivot member and can be opposed to each other The pivotal member rotates. The door closer according to claim 7, which further includes a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are protruding from the sliding rail at intervals, and the sliding The block is located between the first limiting portion and the second limiting portion. The door closer according to claim 8, wherein the slider is formed with one end screw hole and an upper screw hole, the end screw hole penetrates the side surface of the slider, and the telescopic member is opposite to the other end of the fixing seat Formed with an external thread, the telescopic member is combined with the end screw hole by its external thread, one end of the connecting rod penetrates a first connecting hole, the first connecting hole is opposite to the upper screw hole, and a screw passes through The first connecting hole is locked to the upper screw hole. The door closer according to any one of claims 7 to 9, wherein the base is a piece with a through hole, the pivotal member is disposed on the base and has a pivotal hole, the pivotal hole and The through hole is communicated, the other end of the connecting rod passes through a second connecting hole, the second connecting hole is aligned with the pivot hole, a pivot rod is formed with an internal thread, and the pivot rod penetrates the pivot A screw passes through the hole and the perforation, and the second connecting hole is locked to the pivot rod. The door closer according to claim 10, further comprising a dust cover, the dust cover is sleeved on the telescopic part and located between the fixing base and the sliding block.

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