Fireproof door handle

Abstract

The utility model discloses a fireproof door handle which comprises a lock cylinder and two rotating assemblies, each rotating assembly comprises a mounting seat, a handle and a clamp spring, the mounting seat is provided with a mounting cavity and a mounting hole, the mounting hole is communicated with the mounting cavity, the side wall of the mounting cavity is provided with a through hole, the handle is fixedly connected with a connecting rod, the connecting rod penetrates through the mounting hole, and the clamp spring is fixedly connected with the handle. An annular clamping groove is formed in the side wall of the connecting rod in the circumferential direction, an inserting hole is formed in the end face of the connecting rod, the clamping spring is located in the mounting cavity, the clamping spring can be clamped in the annular clamping groove, and the clamping spring can abut against the mounting base so as to limit axial movement of the connecting rod; the two ends of the lock cylinder are inserted into the inserting holes of the two connecting rods respectively, the lock cylinder is sleeved with the clamping spring, and the two mounting bases are fixedly connected through bolts. The disassembly and assembly operation of the handle can be simplified, and the disassembly and assembly efficiency of the handle is improved, so that the handle is quickly disassembled, assembled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire door accessories, in particular to a fire door handle. Background Art

[0002] The fire door handle can facilitate users to apply force to open the fire door. The fire door handle mainly consists of a lock core, a mounting seat, a handle, etc. The mounting seat is fixedly connected to one side of the fire door, the handle is rotatably connected to the mounting seat, and the lock core is used to connect the handles on both sides of the fire door to make the handles on both sides rotate synchronously. Each time the door is opened, the handle needs to be turned. After the handle is repeatedly turned for a long time, it is easy to be damaged. After being damaged, it needs to be disassembled and replaced. The disassembly and assembly structure of the handle of the existing fire door handle is complex. When disassembling and assembling, the mounting seat needs to be first disassembled from the fire door, and the operation is cumbersome, which is not convenient for the disassembly and replacement of the handle and affects the disassembly and assembly efficiency of the handle. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems in the related technologies to some extent. For this reason, the utility model provides a fire door handle, which can simplify the disassembly and assembly operation of the handle and improve the disassembly and assembly efficiency of the handle, so as to quickly disassemble, assemble and replace the handle.

[0004] According to an embodiment of the utility model, a fire door handle is provided, which includes a lock core and two sets of rotating components. The rotating component includes a mounting seat, a handle and a snap ring. The mounting seat is provided with a mounting cavity and a mounting hole. The mounting hole is communicated with the mounting cavity. A through hole is provided on the side wall of the mounting cavity. The handle is fixedly connected with a connecting rod. The connecting rod passes through the mounting hole. An annular groove is provided on the side wall of the connecting rod along the circumferential direction. A jack is provided on the end face of the connecting rod. The snap ring is located in the mounting cavity. The snap ring can be clamped in the annular groove, and the snap ring can abut against the mounting seat to limit the axial movement of the connecting rod. The two ends of the lock core are respectively inserted into the jacks of the two connecting rods, and the two mounting seats are fixedly connected by bolts.

[0005] A fire door handle according to an embodiment of the present utility model has at least the following beneficial effects: During installation, first pass the lock core through the opening of the fire door, and sleeved the snap ring on the lock core for pre-positioning the snap ring. Then, fixedly connect the two mounting seats through bolts, so that the two mounting seats are fixedly connected to the opposite sides of the fire door, and the snap ring extends into the installation cavity. Next, pass the connecting rod fixedly connected to the handle through the installation hole and gradually through the inner hole of the snap ring. Since the snap ring has elasticity and a notch, the inner hole of the snap ring can be enlarged during the process of passing the connecting rod through, and then the snap ring is gradually sleeved on the connecting rod until the snap ring moves to the annular card slot. The snap ring elastically recovers, causing the inner hole to shrink, so as to be clamped in the annular card slot. Since the snap ring can abut against the mounting seat to limit the axial movement of the connecting rod, the handle can be quickly installed on the mounting seat. During disassembly, through the through hole opened on the side wall of the installation cavity, tools such as a flat screwdriver can be inserted into the installation cavity from the through hole, and the notch of the snap ring can be expanded by using tools such as a flat screwdriver to enlarge the inner hole of the snap ring, so that the snap ring is disengaged from the annular card slot. Then, the connecting rod fixedly connected to the handle is extended out of the installation hole, and the handle can be disassembled from the mounting seat without disassembling the mounting seat from the fire door, which can improve the disassembly and assembly efficiency of the handle, so as to quickly disassemble, assemble and replace the handle.

[0006] According to some embodiments of the present utility model, a plurality of the through holes are provided, and the plurality of through holes are arranged at intervals along the circumferential direction of the mounting seat.

[0007] According to some embodiments of the present utility model, along the axial direction of the connecting rod, the diameter of the end of the connecting rod far from the handle gradually decreases in the direction away from the handle.

[0008] According to some embodiments of the present utility model, the outer diameter of the snap ring is larger than the aperture of the installation hole.

[0009] According to some embodiments of the present utility model, a torsion spring is sleeved on the connecting rod of one of the handles, and a positioning groove is opened on the side wall of the connecting rod. The positioning groove communicates with the jack. The mounting seat is provided with a fixing block. One end of the torsion spring is clamped to the fixing block, and the other end of the torsion spring is clamped to the positioning groove.

[0010] According to some embodiments of the present utility model, a limiting block is fixedly sleeved on the connecting rod, and an arc-shaped limiting groove is opened on the outer wall of the limiting block. The fixing block can abut against the side wall of the arc-shaped limiting groove to limit the rotation of the limiting block.

[0011] According to some embodiments of the present utility model, a clamping portion protrudes from the inner wall of the limiting block, and the clamping portion can be clamped in the positioning groove.

[0012] According to some embodiments of the present utility model, the positioning groove extends axially along the connecting rod to the end face of the connecting rod away from the handle.

[0013] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0014] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 is a schematic structural view of a fire door handle according to an embodiment of the present utility model;

[0016] Figure 2 is an exploded schematic view of a fire door handle according to an embodiment of the present utility model;

[0017] Figure 3 is a partial cross-sectional view of a fire door handle according to an embodiment of the present utility model;

[0018] Figure 4 is another schematic structural view of a fire door handle according to an embodiment of the present utility model;

[0019] Figure 5 is a schematic structural view of a limiting block of a fire door handle according to an embodiment of the present utility model;

[0020] Figure 6 is a schematic structural view of a mounting seat of a fire door handle according to an embodiment of the present utility model;

[0021] Figure 7 is a partial structural schematic view of a handle of a fire door handle according to an embodiment of the present utility model.

[0022] Description of the Reference Numerals:

[0023] Rotating assembly 100, mounting seat 110, mounting cavity 111, mounting hole 112, through hole 113, fixing block 114, handle 120, connecting rod 121, annular clamping groove 122, jack 123, positioning groove 124, snap ring 130, bolt 140, torsion spring 150, limiting block 160, arc-shaped limiting groove 161, clamping portion 162, lock core 200. Detailed Embodiments

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] It is understandable that, referring to Figures 1 to 7 The utility model provides a fire door handle, including a lock core 200 and two sets of rotating components 100, the rotating components 100 including a mounting seat 110, a handle 120 and a retaining spring 130, the mounting seat 110 is provided with a mounting cavity 111 and a mounting hole 112, the mounting hole 112 is connected to the mounting cavity 111, the side wall of the mounting cavity 111 is provided with a through hole 113, the handle 120 is fixedly connected with a connecting rod 121, the connecting rod 121 is passed through the mounting hole 112, and the connecting rod A ring groove 122 is circumferentially formed on the side wall of 121, a socket 123 is formed on the end face of the connecting rod 121, a retaining spring 130 is located in the mounting cavity 111, the retaining spring 130 can be engaged with the ring groove 122, and the retaining spring 130 can abut against the mounting seat 110 to limit the axial movement of the connecting rod 121; the two ends of the lock core 200 are respectively inserted into the sockets 123 of the two connecting rods 121, and the two mounting seats 110 are fixedly connected by bolts 140.

[0029] During installation, first, the lock core 200 is inserted into the opening of the fire door, and the retaining spring 130 is sleeved on the lock core 200, and the retaining spring 130 is pre-positioned. Then, the two mounting seats 110 are fixedly connected by bolts 140, so that the two mounting seats 110 are fixedly connected to the opposite sides of the fire door, and the retaining spring 130 is extended into the mounting cavity 111. Next, the connecting rod 121 fixedly connected to the handle 120 is inserted into the mounting hole 112, and gradually inserted into the inner hole of the retaining spring 130. Since the retaining spring 130 has elasticity and a notch, the inner hole of the retaining spring 130 can be enlarged during the insertion of the connecting rod 121, and then the retaining spring 130 is gradually sleeved on the connecting rod 121 until the retaining spring 130 moves to the annular groove 122, and the retaining spring 130 elastically recovers, so that the inner hole is reduced, thereby being clamped to the annular groove 122. The retaining ring 130 can abut against the mounting seat 110 to limit the axial movement of the connecting rod 121, so that the handle 120 can be quickly installed on the mounting seat 110. During disassembly, a tool such as a flat-head screwdriver can be inserted into the mounting cavity 111 through the through hole 113 opened on the side wall of the mounting cavity 111, and the notch of the retaining ring 130 can be propped open by a tool such as a flat-head screwdriver to expand the inner hole of the retaining ring 130, so that the retaining ring 130 is disengaged from the annular retaining groove 122, and then the connecting rod 121 to which the handle 120 is fixedly connected is extended out of the mounting hole 112. The handle 120 can be removed from the mounting seat 110 without removing the mounting seat 110 from the fire door, which can improve the disassembly and assembly efficiency of the handle 120, thereby quickly disassembling and replacing the handle 120. In addition, by respectively inserting the two ends of the lock core 200 into the insertion holes 123 of the two connecting rods 121 , the radial position of the connecting rods 121 can be positioned, thereby improving the accuracy of the connecting rods 121 passing through the inner hole of the retaining spring 130 .

[0030] It should be noted that when the handle 120 is inserted into the inner hole of the retaining spring 130 , a tool such as a screwdriver can be used to extend from the through hole 113 into the installation cavity 111 to adjust the position of the retaining spring 130 , thereby facilitating the connecting rod 121 to be inserted into the inner hole of the retaining spring 130 .

[0031] The insertion hole 123 may be a blind hole, so that the end of the lock core 200 can abut against the bottom wall of the insertion hole 123 , thereby limiting the axial movement of the lock core 200 and reducing the possibility of axial shaking of the lock core 200 .

[0032] It is understandable that, referring to Figure 4 and Figure 6 A plurality of through holes 113 are provided, and the plurality of through holes 113 are arranged at intervals along the circumference of the mounting seat 110. Through the plurality of through holes 113 arranged at intervals along the circumference of the mounting seat 110, a tool such as a flat-blade screwdriver can be inserted through the through holes 113 at different circumferential positions of the mounting seat 110 to facilitate adjustment of the position of the retaining spring 130, and to facilitate observation, finding and alignment of the notch of the retaining spring 130, thereby facilitating disassembly, assembly and replacement of the handle 120.

[0033] It can be understood that, with reference to Figure 3 , along the axial direction of the connecting rod 121, the diameter of the end of the connecting rod 121 away from the handle 120 gradually decreases in the direction away from the handle 120. Since along the axial direction of the connecting rod 121, the diameter of the end of the connecting rod 121 away from the handle 120 gradually decreases in the direction away from the handle 120, by guiding the snap spring 130 to be gradually sleeved on the connecting rod 121 through the side wall of the end of the connecting rod 121 away from the handle 120, the difficulty of sleeving the snap spring 130 on the connecting rod 121 can be reduced, so as to facilitate the snap connection of the snap spring 130 to the annular slot 122, and further facilitate the installation of the handle 120.

[0034] It can be understood that, with reference to Figure 4 and Figure 6 , the outer diameter of the snap spring 130 is larger than the aperture of the mounting hole 112. Since the outer diameter of the snap spring 130 is larger than the aperture of the mounting hole 112, the possibility of the snap spring 130 disengaging from the mounting cavity 111 through the mounting hole 112 can be reduced, so as to reduce the possibility of the connecting rod 121 slipping out of the mounting hole 112, thereby improving the position stability of the handle 120 after assembly.

[0035] It can be understood that, with reference to Figure 2 , Figure 4 and Figure 7 , the connecting rod 121 of one of the handles 120 is sleeved with a torsion spring 150, and a positioning groove 124 is formed on the side wall of the connecting rod 121. The positioning groove 124 communicates with the jack 123. The mounting seat 110 is provided with a fixing block 114. One end of the torsion spring 150 is snap-connected to the fixing block 114, and the other end of the torsion spring 150 is snap-connected to the positioning groove 124. Since one end of the torsion spring 150 is snap-connected to the fixing block 114 and the other end of the torsion spring 150 is snap-connected to the positioning groove 124, when the handle 120 rotates relative to the mounting seat 110, one end of the torsion spring 150 also rotates accordingly, causing the torsion spring 150 to generate a torsional deformation. After the handle 120 is released, the torsion spring 150 elastically recovers, and the elastic force of the torsion spring 150 drives the connecting rod 121 to rotate back, thereby driving the handle 120 to quickly reset, which can improve the use convenience of the fire door handle.

[0036] Specifically, with reference to Figures 4 to 6The connecting rod 121 is fixedly fitted with the limit block 160, and the outer wall of the limit block 160 is provided with an arc-shaped limit groove 161, and the fixed block 114 can abut against the side wall of the arc-shaped limit groove 161 to limit the rotation of the limit block 160. Since the connecting rod 121 is fixedly fitted with the limit block 160, and the outer wall of the limit block 160 is provided with an arc-shaped limit groove 161, the fixed block 114 abuts against the side wall of the arc-shaped limit groove 161 to limit the rotation of the limit block 160, thereby limiting the rotation of the connecting rod 121, so that the rotation angle range of the handle 120 can be controlled, and the possibility of damaging the lock cylinder 200 due to excessive rotation angle of the handle 120 is reduced.

[0037] Specifically, refer to Figures 4 to 6 The inner wall of the limit block 160 is protrudingly provided with a clamping portion 162, which can be clamped in the positioning groove 124. By clamping the clamping portion 162 in the positioning groove 124, the circumferential relative position between the connecting rod 121 and the limit block 160 can be fixed, so that the limit block 160 can rotate synchronously with the connecting rod 121, thereby improving the position stability and installation convenience of the limit block 160.

[0038] Specifically, refer to Figure 4 and Figure 7 The positioning groove 124 extends along the axial direction of the connecting rod 121 to the end face of the connecting rod 121 away from the handle 120. Since the positioning groove 124 extends along the axial direction of the connecting rod 121 to the end face of the connecting rod 121 away from the handle 120, when the limit block 160 and the torsion spring 150 are sleeved on the connecting rod 121, one end of the torsion spring 150 and the clamping portion 162 can gradually slide into and clamped in the positioning groove 124 along the axial direction of the connecting rod 121, thereby facilitating the assembly between the connecting rod 121 and the limit block 160 and the torsion spring 150, and reducing the difficulty of assembly.

[0039] It should be noted that, refer to Figure 3 After installation, the torsion spring 150 and the limit block 160 are both arranged in the installation cavity 111, the torsion spring 150 abuts against the bottom wall of the installation cavity 111, and the limit block 160 is located between the torsion spring 150 and the retaining spring 130. The two side walls of the limit block 160 can abut against the torsion spring 150 and the retaining spring 130 respectively to limit the axial movement of the limit block 160, which can reduce the axial shaking of the limit block 160, and the retaining spring 130 abuts against the limit block 160, so as to limit the axial movement of the connecting rod 121.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A fire door handle, characterized in that: include: Two groups of rotating components, the rotating components include a mounting seat, a handle and a retaining spring, the mounting seat is provided with a mounting cavity and a mounting hole, the mounting hole is communicated with the mounting cavity, the side wall of the mounting cavity is provided with a through hole, the handle is fixedly connected with a connecting rod, the connecting rod is penetrated by the mounting hole, the side wall of the connecting rod is provided with an annular groove along the circumferential direction, the end surface of the connecting rod is provided with a plug hole, the retaining spring is located in the mounting cavity, the retaining spring can be clamped in the annular groove, and the retaining spring can abut against the mounting seat to limit the axial movement of the connecting rod; A lock core, both ends of which are respectively inserted into the insertion holes of the two connecting rods, and the two mounting seats are fixedly connected by bolts.

2. The fire door handle according to claim 1, characterized in that: A plurality of through holes are provided, and the plurality of through holes are arranged at intervals along the circumferential direction of the mounting seat.

3. The fire door handle according to claim 1, characterized in that: Along the axial direction of the connecting rod, the diameter of the end of the connecting rod away from the handle gradually decreases in a direction away from the handle.

4. The fire door handle according to claim 1, characterized in that: The outer diameter of the retaining ring is larger than the hole diameter of the mounting hole.

5. The fire door handle according to claim 1, characterized in that: The connecting rod sleeve of one of the handles is provided with a torsion spring, and the side wall of the connecting rod is provided with a positioning groove, the positioning groove is connected to the jack, the mounting seat is provided with a fixing block, one end of the torsion spring is clamped to the fixing block, and the other end of the torsion spring is clamped to the positioning groove.

6. The fire door handle according to claim 5, characterized in that: The connecting rod is fixedly sleeved with a limit block, an outer wall of the limit block is provided with an arc-shaped limit groove, and the fixed block can abut against the side wall of the arc-shaped limit groove to limit the rotation of the limit block.

7. The fire door handle according to claim 6, characterized in that: The inner wall of the limiting block is protrudingly provided with a clamping portion, and the clamping portion can be clamped in the positioning groove.

8. The fire door handle according to claim 7, characterized in that: The positioning groove extends along the axial direction of the connecting rod to an end surface of the connecting rod away from the handle.

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