Hinge mandrel
By designing a quick oil discharge structure of oil needles and oil needle screws in the hinge mandrel, the problems of complex structure and high manufacturing cost in the prior art are solved, and the effect of rapid door closing and reduced manufacturing cost is achieved.
Patent Information
- Application Number
- CN202420807223.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-17
AI Technical Summary
When the existing hinged mandrel is closed, the design of the speed-regulating oil core leads to complex structure and high manufacturing cost, and additional pressure relief tanks are required to accelerate the flow of oil to the oil storage chamber.
A hinged mandrel is designed, adopting an oil needle and an oil needle screw, wherein the other end of the oil needle includes a first oil needle body and a second oil needle body, and the outer diameter of the second oil needle body is from close to the first oil needle One end of the body gradually becomes smaller, and a rapid oil discharge structure for rapid oil discharge is provided, and a rapid oil discharge is achieved through the design of the oil needle without additional pressure relief grooves.
A fast door shutdown speed is achieved without the need for additional pressure relief tanks, simplifying the structure and reducing manufacturing costs.
Smart Images
Figure CN222228323U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hinges, in particular to a hinge core shaft. Background Art
[0002] At present, hinges are made of a variety of materials, and the performance of hinges of various materials is different. In order to meet the high-quality requirements of users, many functional hinge cores have appeared on the market. Figure 1 As shown, the multifunctional hinge core shaft disclosed in the application No. 2011101859305 is provided with a closing force adjustment mechanism and a closing speed adjustment mechanism. When opening and closing the door, the flow of the hydraulic oil in the pressurized oil chamber and the oil storage chamber can be controlled by adjusting the insertion amount of the speed regulating oil core 18 with a tapered needle rod into the inner cavity of the piston 13 to adjust the gap between the needle rod of the speed regulating oil core 18 and the speed regulating valve hole (which is actually an oil hole of the piston 13).
[0003] However, since a tapered needle rod is provided at the upper end of the speed regulating oil core 18, when the door is closed (the piston 13 moves downward, causing the speed regulating oil core 18 to gradually rise relative to the piston 13), the gap between the needle rod of the speed regulating oil core 18 and the speed regulating valve hole changes gradually and slowly, so that the flow rate from the pressurized oil chamber to the oil storage chamber also changes slowly. Only when the door is closed to 5 to 10 degrees, the hydraulic oil flows from the pressurized oil chamber to the oil storage chamber through the pressure relief groove, thereby achieving a fast door closing speed.
[0004] It can be seen that the core shaft of the above patent needs to add an additional pressure relief groove to accelerate the flow of oil from the pressurized oil chamber to the oil storage chamber, which makes the structure relatively complex and the manufacturing cost relatively high. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a hinge core shaft to solve the above technical problems.
[0006] In order to solve the above technical problems, the utility model provides a technical solution: a hinge core shaft, comprising a main shaft cylinder, a cylinder sleeve arranged at the lower end of the main shaft cylinder and a piston in the cylinder sleeve, wherein the main shaft cylinder is provided with a receiving through hole, the top end of the cylinder sleeve is provided with a receiving groove corresponding to the receiving through hole, the bottom end of the cylinder sleeve is provided with a first threaded hole connected with the receiving groove, wherein the piston is arranged in the receiving groove of the cylinder sleeve, the piston is provided with a one-way hole, a threaded connection structure is provided between the cylinder sleeve and the piston, so that the piston rises and falls in the receiving groove of the cylinder sleeve when the cylinder sleeve rotates, and is characterized in that it also includes an oil needle and an oil needle screw Thread, one end of the oil needle screw is threadedly connected in the first threaded hole, one end of the oil needle is arranged at the other end of the oil needle screw, the piston is provided with an oil drain hole connected with the accommodating groove, and the other end of the oil needle is inserted in the oil drain hole; wherein, the other end of the oil needle includes a first oil needle body and a second oil needle body connected to the first oil needle body and extending toward one end away from the oil needle, and the outer diameter of the second oil needle body is gradually reduced from one end close to the first oil needle body to the other end away from the first oil needle body, and the first oil needle body is provided with a quick oil drain structure for quick oil drain.
[0007] Furthermore, the quick oil discharge structure is a plurality of deep grooves arranged at intervals and around the outer wall of the first oil needle body along the length direction of the first oil needle body.
[0008] Furthermore, the quick oil discharge structure is an annular groove arranged outside the outer wall of the first oil needle body, wherein the outer diameter of the cross section of the first oil needle body of the annular groove is smaller than the outer diameter of the second oil needle body.
[0009] Furthermore, the quick oil discharge structure is a rectangular depression arranged on the outer wall of the first oil needle body.
[0010] Furthermore, a receiving slot is provided at the other end of the oil needle screw, and a clamping portion is provided at one end of the oil needle, wherein the clamping portion is detachably arranged in the receiving slot.
[0011] Furthermore, the other end of the oil needle screw is a first magnet, and the clamping portion is a second magnet attracted to the first magnet.
[0012] Furthermore, an iron sheet is provided in the receiving slot at the other end of the oil needle screw, and the retaining portion is a magnet.
[0013] Furthermore, a slot is provided at one end of the oil needle screw.
[0014] Furthermore, the first oil needle body and the second oil needle body are integrally formed and arranged in a straight line.
[0015] Compared with the prior art, the utility model provides a hinge core shaft with the following beneficial effects: the hinge core shaft disclosed in the utility model includes a main shaft cylinder, a cylinder sleeve, a piston, an oil needle and an oil needle screw, wherein the other end of the oil needle includes a first oil needle body and a second oil needle body connected to the first oil needle body and extending toward an end away from the oil needle, and the outer diameter of the second oil needle body is gradually reduced from the end close to the first oil needle body to the other end away from the first oil needle body, and the first oil needle body is provided with a quick oil drainage structure for quick oil drainage. Through the above method, the oil needle of the hinge core shaft disclosed in the utility model is provided with a quick oil drainage structure for quick oil drainage, so that there is no need to additionally set a pressure relief groove for quick oil drainage, the structure is simple, and the manufacturing cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the hinge mandrel on the market;
[0017] Figure 2 It is a structural schematic diagram of the hinge mandrel of the utility model;
[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the piston of the middle hinge spindle;
[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the cylinder sleeve of the middle hinge mandrel;
[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the oil needle screw of the center hinge spindle;
[0021] Figure 6 for Figure 1 A schematic structural diagram of a first embodiment of an oil needle of a center hinge spindle;
[0022] Figure 7 for Figure 1 A schematic structural diagram of a second embodiment of the oil needle of the center hinge spindle;
[0023] Figure 8 for Figure 1 A schematic structural diagram of a third embodiment of the oil needle of the center hinge core shaft. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] like Figure 2-5 As shown, the utility model discloses a hinge core shaft, including a main shaft cylinder 60, a cylinder sleeve 61 arranged at the lower end of the main shaft cylinder 60, a piston 62 in the cylinder sleeve 61, an oil needle 63 and an oil needle screw 64.
[0026] In this embodiment, a receiving through hole 601 is provided in the main shaft cylinder 60, a receiving groove 611 corresponding to the receiving through hole 601 is provided at the top of the cylinder sleeve 61, and a first threaded hole 612 communicating with the receiving groove 611 is provided at the bottom of the cylinder sleeve 61, wherein the piston 62 is arranged in the receiving groove 611 of the cylinder sleeve 61, the piston 62 is provided with a one-way hole, and a threaded connection structure is arranged between the cylinder sleeve 61 and the piston 62, so that when the cylinder sleeve 61 rotates, the piston 62 rises and falls in the receiving groove 611 of the cylinder sleeve 61. It should be understood that the cylinder sleeve 61 is connected to the door and rotates with the door, so when the cylinder sleeve 61 rotates, the piston 62 will be driven to rise and fall in the receiving groove 611 of the cylinder sleeve 61, and the piston 62 divides the cylinder sleeve 61 into an oil storage chamber 6211 and a pressurized oil chamber 6212 below the oil storage chamber 6211.
[0027] It is worth noting that the threaded connection structure arranged between the cylinder liner 61 and the piston 62 of this embodiment can be implemented using the structure in the prior art. Therefore, the cylinder liner 61, the piston 62 and the threaded connection structure arranged between the cylinder liner 61 and the piston 62 can be implemented using products in the prior art, and their principles and structures will not be described one by one here.
[0028] Furthermore, one end of the oil needle screw 64 is threadedly connected in the first threaded hole 612, one end of the oil needle 63 is arranged at the other end of the oil needle screw 61, the piston 62 is provided with an oil drain hole 621 connected to the receiving groove 612, and the other end of the oil needle 63 is inserted in the oil drain hole 621.
[0029] Preferably, a concave hole is provided at one end of the piston 62 close to the oil needle screw 61, and a connecting block 622 is provided in the concave hole, and the connecting block 622 is provided with an oil needle hole 6221 corresponding to the oil drain hole 621, and the other end of the oil needle 63 is inserted in the oil needle hole 6221 and the oil drain hole 621.
[0030] In this embodiment, the other end of the oil needle 63 includes a first oil needle body 631 and a second oil needle body 632 connected to the first oil needle body 631 and extending toward an end away from the oil needle 63 .
[0031] Preferably, the first oil needle body 631 and the second oil needle body 632 are integrally formed and arranged in a straight line. It should be understood that the first oil needle body 631 is arranged close to the oil needle screw 64, and the second oil needle body 632 is arranged away from the oil needle screw 64.
[0032] Furthermore, the outer diameter of the second oil needle body 632 is gradually reduced from one end thereof close to the first oil needle body 631 to the other end thereof far away from the first oil needle body 631 , that is, the second oil needle body 632 is in the shape of an elongated cone.
[0033] In this embodiment, the first oil needle body 631 is provided with a quick oil discharge structure for quick oil discharge.
[0034] It should be understood that since the other end of the oil needle 63 is inserted into the oil drain hole 621, when the door is closed, the piston 62 moves downward, so that the oil needle 63 gradually rises relative to the piston 62 (refer to Figure 2 ), during this process, the oil in the pressurized oil chamber 6212 flows to the oil storage chamber 6211, and in the process of closing the door, the oil needle 63 is gradually inserted into the oil discharge hole 621 of the piston 62, and in the process of gradual insertion, first the second oil needle body 632 gradually penetrates into the oil discharge hole 621, during this process, the oil in the pressurized oil chamber 6212 slowly flows to the oil storage chamber 6211, and then the first oil needle body 631 is inserted into the oil discharge hole 621 (when the door is closed to 5 to 10 degrees, the first oil needle body 631 is just inserted into the oil discharge hole 621), during this process, the oil in the pressurized oil chamber 6212 quickly flows to the oil storage chamber 6211 through the quick oil discharge structure, and the door closing action is quickly completed, and the door closing effect is good.
[0035] In this embodiment, if Figure 6 As shown, the quick oil discharge structure is a plurality of deep grooves 6311 arranged around the outer wall of the first oil needle body 631 at intervals along the length direction of the first oil needle body 631 .
[0036] Further, such as Figure 7 As shown, in other embodiments, the quick oil drainage structure is an annular groove 6312 arranged outside the outer wall of the first oil needle body 631, wherein the outer diameter of the cross-section of the first oil needle body 631 of the annular groove 6312 is smaller than the outer diameter of the second oil needle body 632.
[0037] Further, such as Figure 8 As shown, in other embodiments, the quick oil discharge structure is a rectangular recess 6313 disposed on the outer wall of the first oil needle body 631 .
[0038] In this embodiment, the other end of the oil needle screw 64 is provided with a receiving slot 641 , and one end of the oil needle 63 is provided with a clamping portion 630 , wherein the clamping portion 630 is detachably disposed in the receiving slot 641 .
[0039] Furthermore, the other end of the oil needle screw 64 is a first magnet, and the clamping portion 630 is a second magnet attracted to the first magnet.
[0040] Furthermore, an iron sheet is provided in the receiving slot 641 at the other end of the oil needle screw 64, and the clamping portion 630 is a magnet.
[0041] In this embodiment, a slot 642 is provided at one end of the oil needle screw 64 to facilitate the insertion of a tool to drive the oil needle screw 64 to rotate.
[0042] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.
[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hinge spindle, comprising a main shaft cylinder, a cylinder sleeve arranged at the lower end of the main shaft cylinder and a piston in the cylinder sleeve, wherein the main shaft cylinder is provided with a receiving through hole, the top end of the cylinder sleeve is provided with a receiving groove corresponding to the receiving through hole, the bottom end of the cylinder sleeve is provided with a first threaded hole connected with the receiving groove, wherein the piston is arranged in the receiving groove of the cylinder sleeve, the piston is provided with a one-way hole, a threaded connection structure is provided between the cylinder sleeve and the piston, so that the piston rises and falls in the receiving groove of the cylinder sleeve when the cylinder sleeve rotates, characterized in that It also includes an oil needle and an oil needle screw, one end of the oil needle screw is threadedly connected in the first threaded hole, one end of the oil needle is arranged at the other end of the oil needle screw, the piston is provided with an oil drain hole connected to the receiving groove, and the other end of the oil needle is inserted into the oil drain hole; Among them, the other end of the oil needle includes a first oil needle body and a second oil needle body connected to the first oil needle body and extending toward one end away from the oil needle, and the outer diameter of the second oil needle body is gradually reduced from one end close to the first oil needle body to the other end away from the first oil needle body, and the first oil needle body is provided with a quick oil drainage structure for quick oil drainage.
2. The hinge spindle according to claim 1, characterized in that: The quick oil discharge structure is a plurality of deep grooves arranged around the outer wall of the first oil needle body at intervals along the length direction of the first oil needle body.
3. The hinge spindle according to claim 1, characterized in that: The quick oil discharge structure is an annular groove arranged outside the outer wall of the first oil needle body, wherein the outer diameter of the cross section of the first oil needle body of the annular groove is smaller than the outer diameter of the second oil needle body.
4. The hinge core shaft according to claim 1, characterized in that: The quick oil discharge structure is a rectangular depression disposed on the outer wall of the first oil needle body.
5. The hinge spindle according to claim 1, 2, 3 or 4, characterized in that: The other end of the oil needle screw is provided with a receiving slot, and one end of the oil needle is provided with a clamping portion, wherein the clamping portion is detachably arranged in the receiving slot.
6. The hinge spindle according to claim 5, characterized in that: The other end of the oil needle screw is a first magnet, and the clamping portion is a second magnet attracted to the first magnet.
7. The hinge spindle according to claim 5, characterized in that: An iron sheet is arranged in the receiving slot at the other end of the oil needle screw, and the clamping part is a magnet.
8. The hinge spindle according to claim 1, characterized in that: One end of the oil needle screw is provided with a clamping groove.
9. The hinge spindle according to claim 1, characterized in that: The first oil needle body and the second oil needle body are integrally formed and arranged in a straight line.