A door hinge assembly with door closing force reduction function
By setting a buffer in the active hinge of the box door hinge group and setting a reduction spring in the driven hinge, the problem of lack of buffering and speed reduction mechanism in the existing oven hinge structure is solved, and the smooth closing of the box door and good sealing effect are achieved, while reducing production costs.
Patent Information
- Application Number
- CN202420247778.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-02-01
AI Technical Summary
The existing oven hinge structure lacks a buffering and reduction mechanism when the door body is closed, causing the door body to close and open quickly, causing noise and vibration, affecting the normal use of the oven.
A box door hinge set is designed, including an active hinge and a driven hinge. A buffer is provided in the active hinge to slow down the movement speed, and a reduction spring is provided in the driven hinge to offset the closing tension applied by the tension spring and achieve the buffering effect.
Through the design of buffer and pressure reduction spring, the box door has a reset buffer function when closed, which improves the operating texture and maintains a good sealing effect, while reducing production costs and improving market competitiveness.
Smart Images
Figure CN222701774U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hardware accessory, in particular to a door hinge group with a door closing force reduction function. Background Art
[0002] At present, the hinge structure used for the oven door generally includes a fixed seat installed on the box body and a hinge seat installed on the door body. The hinge seat is hinged to the fixed seat through a movable hinge component, so that the door body can be opened or closed around the movable hinge component and the cabinet body. During the use of the oven, the sealing between the door body and the box body is required to be high, so a pressure spring is usually set on the hinge to ensure that there is always elastic pressure on the door body in the closed state to press it tightly against the box body. However, in the hinge of the above structure, since there is no buffering and deceleration mechanism when the door body is closed, the door body will close quickly under the influence of elastic pressure when closing, and will open quickly under the action of elastic restoring force when the door body is opened. The rapid opening and closing of the door body will not only make the door body make noise and be easily pinched when in use, but the vibration generated during the opening and closing process will seriously affect the normal use of the oven. Therefore, the existing oven hinge structure still needs to be further improved. Utility Model Content
[0003] The utility model aims to overcome the shortcomings of the prior art and provide a cabinet door hinge group with a door closing force reduction function which is simple in structure, easy to use and low in production cost.
[0004] The purpose of the utility model is achieved in the following way: a cabinet door hinge assembly with a door closing force reduction function, characterized in that it includes an active hinge and a driven hinge connecting the cabinet door and the cabinet body;
[0005] The active hinge comprises a main housing and a main hook hinged thereto, a main pulling arm is arranged in the main housing, one end of the main pulling arm is hinged to the main hook, and the other end is connected to the main housing through a main tension spring, the main tension spring pulls the main hook to always swing in the closing direction through the main pulling arm, and a buffer is also arranged in the main housing to be linked with the main pulling arm, when the main hook is closed, the buffer is linked with the main pulling arm to slow down the movement speed of the main pulling arm, thereby playing a buffering role when the active hinge is closed;
[0006] The driven hinge comprises a slave housing and a slave hook hinged thereto, a slave arm is arranged in the slave housing, one end of the slave arm is hinged to the slave hook, and the other end is connected to a slave spring through a slave rod, the slave spring is connected to the slave housing, and the slave spring swings in the closing direction through the slave rod, the slave arm and the slave hook;
[0007] A force reducing spring is also installed in the slave housing. When the hook is closed to a set angle, the force reducing spring applies a force on the slave pull arm or the slave pull rod to offset the door closing force applied by the pull spring.
[0008] The force reduction spring is sleeved on the guide plate, a fixing hole is provided at one end of the guide plate, and a sliding hole is provided at the other end. A fixing pin passes through the fixing hole and is connected to the limiting hole on the shell, and a sliding pin passes through the sliding hole and is fixedly connected to the shell, and the sliding pin and the sliding hole slide relative to each other.
[0009] The fixing pin passes through the sliding hole on the pull rod and is connected with the limiting hole. When the hook is closed to a set angle, power is applied to the reduction spring through the sliding hole through the fixing pin to generate a force.
[0010] A spring pressure seat is arranged on the guide plate, one end of the force reduction spring is pressed on the spring pressure seat, and the other end of the force reduction spring is pressed on the fixing pin.
[0011] The shear spring force is smaller than the tension spring force.
[0012] The slave pull rod is provided with a clearance groove, and the sliding pin passes through the clearance groove and is fixedly connected with the shell.
[0013] The buffer is a self-resetting compression buffer, the cylinder part of which is connected to the main housing, and the piston rod part of which is connected to the main pulling arm.
[0014] The force reducing spring is a coil spring.
[0015] The force reducing spring is a torsion spring.
[0016] The torsion spring is sleeved on the spring guide rod, and both ends of the spring guide rod are fixedly connected to the slave shell. The slave shell is provided with a pressure groove corresponding to the position of the slave pull arm, and the spring pressure rod is slidably installed in the pressure groove. A supporting foot of the torsion spring presses on the spring pressure rod, and the spring pressure rod is located within the active stroke of the slave pull arm. When the hook is closed to the set angle, the torsion spring exerts a force on the slave pull arm through the spring pressure rod to offset the door closing pulling force exerted by the slave tension spring.
[0017] The beneficial effects of the utility model are: 1. Simple structure, low production cost, and improved market competitiveness. 2. In the double-hinge system, the active hinge is provided with a buffer, and the driven hinge on the other side is not provided with a buffer. At a lower production cost, the door can have a reset buffer function when closed, which improves the operating texture of the door and maintains a good sealing effect. 3. A force reduction spring is provided in the driven hinge without a buffer. When the hook is closed to the set angle, the force reduction spring applies a force to the pull arm or the pull rod to offset the door closing force applied by the tension spring. The driven hinge has a certain buffering effect without installing a buffer. While reducing the production cost, the hinge systems on both sides can still achieve a smooth and stable effect when closing. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 , 2 This is a schematic diagram of the hinge in the closed state in the present invention.
[0019] Figure 3 This is a structural assembly diagram of the first embodiment of the active hinge in the utility model.
[0020] Figure 4 It is a structural schematic diagram of the first embodiment of the driven hinge in the utility model.
[0021] Figure 5 , 6 This is a structural assembly diagram of the first embodiment of the driven hinge in the utility model.
[0022] Figure 7 , 8 9 is a schematic diagram of the closing process of the first embodiment of the driven hinge in the utility model.
[0023] Fig.10 It is a structural schematic diagram of the second embodiment of the driven hinge in the utility model.
[0024] Fig.11 This is a structural assembly diagram of the second embodiment of the driven hinge in the utility model. DETAILED DESCRIPTION
[0025] The present invention is further described in detail below with reference to the accompanying drawings. A door hinge assembly with a door closing force reduction function, characterized in that it comprises an active hinge 1 and a driven hinge 2 connecting the door and the box body;
[0026] The active hinge 1 comprises a main housing 11 and a main hook 12 hinged thereto, a main pulling arm 13 is arranged in the main housing 11, one end of the main pulling arm 13 is hinged to the main hook 12, and the other end is connected to the main housing 11 through a main tension spring 14, the main tension spring 14 pulls the main hook 12 to always swing in the closing direction through the main pulling arm 13, and a buffer 15 is also arranged in the main housing 11 to be linked with the main pulling arm 13, when the main hook 12 is closed, the buffer 15 is linked with the main pulling arm 13 to slow down the movement speed of the main pulling arm 13, thereby playing a buffering role when the active hinge 1 is closed;
[0027] The driven hinge 2 comprises a slave housing 21 and a slave hook 22 hinged thereto, a slave arm 23 is arranged in the slave housing 21, one end of the slave arm 23 is hinged to the slave hook 22, and the other end is connected to a slave spring 24 through a slave rod 26, and the slave spring 24 is connected to the slave housing 21, and the slave spring 24 always swings in the closing direction through the slave rod 26, the slave arm 23 and the slave hook 22;
[0028] A force reducing spring 25 is also installed in the slave housing 21. When the slave hook 22 is closed to a set angle, the force reducing spring 25 applies a force to the slave pull arm 23 or the slave pull rod 26 to offset the door closing force applied by the pull spring 24.
[0029] The force reduction spring 25 is sleeved on the guide plate 27. A fixing hole 271 is provided at one end of the guide plate 27, and a sliding hole 272 is provided at the other end. A fixing pin 273 passes through the fixing hole 271 and is connected to the limiting hole 211 on the shell 21. A sliding pin 274 passes through the sliding hole 272 and is fixedly connected to the shell 21. The sliding pin 274 and the sliding hole 272 slide relative to each other.
[0030] The fixing pin 273 passes through the sliding hole 261 on the pull rod 26 and is connected to the limiting hole 211. When the hook 22 is closed to a set angle, power is applied to the reduction spring 25 through the sliding hole 261 and the fixing pin 273 to generate a force.
[0031] The guide plate 27 is provided with a spring pressure seat 275 , one end of the force reduction spring 25 is pressed on the spring pressure seat 275 , and the other end of the force reduction spring 25 is pressed on the fixing pin 273 .
[0032] The elastic force of the force reducing spring 25 is smaller than the elastic force of the tension spring 24 .
[0033] The slave pull rod 26 is provided with a clearance groove 263 , and the sliding pin 274 passes through the clearance groove 263 and is fixedly connected to the housing 21 .
[0034] The buffer 15 is a self-resetting compression buffer, a cylinder part of which is connected to the main housing 11 , and a piston rod part of which is connected to the main pulling arm 13 .
[0035] like Figure 1-9 As shown, the force reducing spring 25 is a coil spring.
[0036] like Figure 10-11 As shown, the force reducing spring 25 is a torsion spring.
[0037] The torsion spring is sleeved on the spring guide rod 28, and both ends of the spring guide rod 28 are fixedly connected to the slave housing 21. The slave housing 21 is provided with a pressing groove 29 corresponding to the position of the slave pull arm 23, and the spring pressure rod 210 is slidably installed in the pressing groove 29. A supporting foot of the torsion spring is pressed on the spring pressure rod 210, and the spring pressure rod 210 is located within the movable stroke of the slave pull arm 23. When the slave hook 22 is closed to the set angle, the torsion spring applies a force on the slave pull arm 23 through the spring pressure rod 210 to offset the door closing tension applied by the pull spring 24.
[0038] Working principle: Figure 1-2As shown, the box body and the door in this case are installed through a double hinge system. During installation, according to actual use needs, you can choose to install the hinge on the box body and the hinge seat on the door for connection, or you can choose to install the hinge on the door and the hinge seat on the box body for connection. Among them, because the hook of the hinge is installed on the hinge seat in a snap-on manner, the door can be easily disassembled after the hinge system is installed in this case, so that the user can clean the box conveniently.
[0039] It should be noted that the active hinge 1 in this case includes a main shell 11 and a main hook 12 hinged thereto, a main pulling arm 13 is arranged in the main shell 11, one end of the main pulling arm 13 is hinged to the main hook 12, and the other end is connected to the main shell 11 through a main tension spring 14, and the main tension spring 14 pulls the main hook 12 through the main pulling arm 13 to always swing in the closing direction, and a buffer 15 is also arranged in the main shell 11 to link with the main pulling arm 13. When the main hook 12 is closed, the buffer 15 links with the main pulling arm 13 to slow down the movement speed of the main pulling arm 13, thereby playing a buffering role when the active hinge 1 is closed.
[0040] In order to save costs, the driven hinge 2 described in this case includes a slave housing 21 and a slave hook 22 hinged thereto, a slave pull arm 23 is provided in the slave housing 21, one end of the slave pull arm 23 is hinged to the slave hook 22, and the other end is connected to the slave housing 21 through a slave pull spring 24, and the slave pull spring 24 pulls the slave hook 22 to always swing in the closing direction through the slave pull arm 23. It can be seen that no buffer is provided in the driven hinge 2.
[0041] Therefore, when the door is opened or closed, the active hinge 1 and the driven hinge 2 synchronously support the door, and when the door is closed, the buffer 15 in the active hinge 1 is linked with the main pull arm 13 to slow down the movement speed of the main pull arm 13, thereby playing a buffering role when the active hinge 1 is closed, and indirectly playing a buffering role when the door is closed, avoiding the noise caused by the rapid collision between the door and the box body, while improving its usage texture and extending its service life.
[0042] In order to prevent the driven hinge from closing too quickly without the damping effect of the buffer, resulting in inconsistent closing speeds on the left and right sides of the door and causing distortion, a force reducing spring 25 is also installed in the shell 21 in this case. When the hook 22 is closed to the set angle, the force reducing spring 25 applies a force to the pull arm 23 or the pull rod 26 to offset the closing force applied by the tension spring 24.
[0043] In order to fix and install the force reduction spring, the force reduction spring is a coil spring. The coil force reduction spring 25 is sleeved on the guide plate 27. The guide plate 27 is provided with a fixing hole 271 at one end and a sliding hole 272 at the other end. A fixing pin 273 passes through the fixing hole 271 and is connected to the limiting hole 211 on the slave housing 21. A sliding pin 274 passes through the sliding hole 272 and is fixedly connected to the slave housing 21. The sliding pin 274 slides relatively with the sliding hole 272. The fixing pin 273 passes through the slave sliding hole 261 on the slave pull rod 26 and is connected to the limiting hole 211. When the slave hook 22 is closed to a set angle, the slave sliding hole 261 applies power to the force reduction spring 25 through the fixing pin 273 to generate a buffering force, so that a spring structure with lower cost and simpler structure can be used to replace a complex hydraulic damper.
[0044] Among them, Figure 10-11 As shown, the force reducing spring 25 is a torsion spring. The torsion spring is sleeved on the spring guide rod 28, and the two ends of the spring guide rod 28 are fixedly connected to the slave housing 21, so that the torsion spring is fixed in the slave housing. The slave housing 21 is provided with a pressing groove 29 corresponding to the position of the slave pull arm 23, and the spring pressing rod 210 is slidably installed in the pressing groove 29. One supporting leg of the torsion spring is pressed in the slave housing, and the other supporting leg of the torsion spring is pressed on the spring pressing rod 210. The spring pressing rod 210 is located within the movable stroke of the slave pull arm 23. When the slave hook 22 is closed to the set angle, the torsion spring exerts a force on the slave pull arm 23 through the spring pressing rod 210 to offset the door closing tension applied by the slave tension spring 24, thereby realizing the use of a torsion spring instead of the above-mentioned spiral spring.
[0045] Therefore, in this case, a buffer is only set in the active hinge 1, and there is no need to set a buffer in the driven hinge 2 as a follower. Instead, a force reduction spring with lower cost and simpler structure is used instead. Due to the complex structure of the buffer and the high manufacturing precision of the parts, its cost is very expensive. Therefore, in this case, while omitting a set of buffers, the uniquely designed force reduction spring can still play a buffering role when the door is closed, while reducing the production cost. In the current fierce market competition environment, it can effectively reduce costs by more than 18%. It greatly improves market competitiveness, so it can be widely promoted and used.
[0046] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the scope of protection of the claims created by the present invention.
Claims
1. A door hinge assembly with a door closing force reduction function, characterized in that: It comprises an active hinge (1) and a driven hinge (2) for connecting the box door and the box body; The active hinge (1) comprises a main housing (11) and a main hook (12) hinged thereto, a main pulling arm (13) is arranged in the main housing (11), one end of the main pulling arm (13) is hinged to the main hook (12), and the other end is connected to the main housing (11) via a main tension spring (14), the main tension spring (14) pulls the main hook (12) through the main pulling arm (13) to always swing in the closing direction, and a buffer (15) is also arranged in the main housing (11) to be linked with the main pulling arm (13), when the main hook (12) is closed, the buffer (15) is linked with the main pulling arm (13) to slow down the movement speed of the main pulling arm (13), thereby playing a buffering role when the active hinge (1) is closed; The driven hinge (2) comprises a slave housing (21) and a slave hook (22) hinged thereto, a slave pull arm (23) is arranged in the slave housing (21), one end of the slave pull arm (23) is hinged to the slave hook (22), and the other end is connected to a slave pull spring (24) via a slave pull rod (26), the slave pull spring (24) is connected to the slave housing (21), and the slave pull spring (24) is always swung in a closing direction by pulling the slave pull rod (26), the slave pull arm (23) and the slave hook (22); A force reducing spring (25) is also installed in the slave housing (21). When the slave hook (22) is closed to a set angle, the force reducing spring (25) applies a force to the slave pull arm (23) or the slave pull rod (26) to offset the door closing force applied by the tension spring (24).
2. The door hinge assembly with door closing force reduction function according to claim 1, characterized in that: The force reduction spring (25) is sleeved on the guide plate (27); one end of the guide plate (27) is provided with a fixing hole (271), and the other end is provided with a sliding hole (272); a fixing pin (273) passes through the fixing hole (271) and is connected to a limiting hole (211) on the housing (21); a sliding pin (274) passes through the sliding hole (272) and is fixedly connected to the housing (21); the sliding pin (274) and the sliding hole (272) slide relative to each other.
3. The door hinge assembly with door closing force reduction function according to claim 2, characterized in that: The fixing pin (273) passes through the sliding hole (261) on the pull rod (26) and is connected to the limiting hole (211). When the hook (22) is closed to a set angle, power is applied to the reduction spring (25) through the sliding hole (261) and the fixing pin (273), thereby generating a force.
4. The door hinge assembly with door closing force reduction function according to claim 2, characterized in that: A spring pressure seat (275) is provided on the guide plate (27), one end of the force reduction spring (25) is pressed on the spring pressure seat (275), and the other end of the force reduction spring (25) is pressed on the fixing pin (273).
5. The door hinge assembly with door closing force reduction function according to claim 1, characterized in that: The elastic force of the force reducing spring (25) is smaller than the elastic force of the tension spring (24).
6. The door hinge assembly with door closing force reduction function according to claim 1, characterized in that: The slave pull rod (26) is provided with a clearance groove (263), and the sliding pin (274) passes through the clearance groove (263) and is fixedly connected to the housing (21).
7. The door hinge assembly with door closing force reduction function according to claim 1, characterized in that: The buffer (15) is a self-resetting compression buffer, the cylinder part of which is connected to the main housing (11), and the piston rod part of which is connected to the main pulling arm (13).
8. A door hinge assembly with door closing force reduction function according to any one of claims 1, 2, 4 and 5, characterized in that: The force reducing spring (25) is a coil spring.
9. A door hinge assembly with door closing force reduction function according to any one of claims 1, 2, 4 and 5, characterized in that: The force reducing spring (25) is a torsion spring.
10. The door hinge assembly with door closing force reduction function according to claim 9, characterized in that: The torsion spring is sleeved on the spring guide rod (28), and both ends of the spring guide rod (28) are fixedly connected to the slave housing (21). The slave housing (21) is provided with a pressing groove (29) corresponding to the position of the slave pull arm (23). The spring pressure rod (210) is slidably installed in the pressing groove (29). A supporting foot of the torsion spring is pressed on the spring pressure rod (210). The spring pressure rod (210) is located within the movable stroke of the slave pull arm (23). When the slave hook (22) is closed to a set angle, the torsion spring applies a force on the slave pull arm (23) through the spring pressure rod (210) to offset the door closing tension applied by the pull spring (24).