Dishwasher hinge with double door balance

Abstract

The present invention relates to the technical field of hinges, and discloses a dishwasher hinge with double door balance, comprising a cabinet connection bracket for connecting with the cabinet of the dishwasher, and a door connection seat for connecting with the door of the dishwasher, one end of the cabinet connection bracket and one end of the door connection seat are connected to each other by a central pin shaft, a damping groove is provided on the cabinet connection bracket, a friction damping module is provided in the damping groove, one end of the friction damping module is connected with a spring pull rod, and the other end of the friction damping module is connected with the door connection seat by a first hinge shaft. The present invention can achieve double balance that the dishwasher door can be self-closed when opened at a small angle and can automatically hover when opened at a large angle, and improves the overall appearance quality after the dishwasher and the storage cabinet are assembled and connected.

Description

Technical Field

[0001] The invention relates to the technical field of hinges, and in particular to a dishwasher hinge with double door body balance. Background Art

[0002] A dishwasher is a device used to automatically wash tableware such as bowls, chopsticks, plates, dishes, knives, forks, etc. It is mainly used in homes, restaurants, hotels, canteens, etc. A dishwasher hinge is a connecting component used to connect the cabinet and door of a dishwasher.

[0003] The dishwasher in the prior art has the following problems when in use:

[0004] First, when the existing dishwasher is manually rotated to a small open angle, the dishwasher door does not have a self-closing function after the hand is released. If it is not closed tightly manually, it is easy to cause the sealing performance to decrease and cause leakage.

[0005] Secondly, the door of the existing dishwasher cannot hover at any angle when it is opened within a large angle range, thereby affecting the convenience of operation.

[0006] Third, existing floor-standing dishwashers are usually installed and connected with storage cabinets during decoration, and the outer side of the storage cabinet door is flush with the outer side of the dishwasher door to ensure a good overall appearance. However, in order to prevent the lower end of the floor-standing dishwasher door from interfering with the ground when it is rotated from top to bottom, a large gap needs to be left at the lower end of the dishwasher door when it is closed, resulting in the lower end of the dishwasher door not being flush with the lower end of the storage cabinet door when it is closed, thereby affecting the overall appearance quality of the storage cabinet and dishwasher combination. Summary of the invention

[0007] In order to solve the above problems, the present invention proposes a dishwasher hinge with double door body balance, which aims to realize that the dishwasher door can be automatically closed when it is opened at a small angle and can automatically hover when it is opened at a large angle, thereby improving the overall appearance quality of the dishwasher and the storage cabinet after the combination is installed and connected. The specific technical solution is as follows:

[0008] A dishwasher hinge with double door balance includes a cabinet connecting bracket for connecting to the cabinet of the dishwasher and a door connecting seat for connecting to the door of the dishwasher, one end of the cabinet connecting bracket and one end of the door connecting seat are connected to each other in relative rotation via a center pin shaft, a damping groove is provided on the cabinet connecting bracket, a friction damping module is provided in the damping groove, one end of the friction damping module is connected to a spring pull rod, and the other end of the friction damping module is connected to the door connecting seat via a first hinge shaft.

[0009] In the above technical solution, by setting a damping groove in the cabinet connecting bracket, and setting a friction damping module and a spring pull rod in the damping groove, the dual balancing function of the dishwasher door being able to close automatically when opened at a small angle and to automatically hover when opened at a large angle is achieved.

[0010] The specific implementation process of the above dual balancing function is analyzed as follows:

[0011] When the dishwasher door is opened at a small angle (for example, less than 15°), the rotational torque generated by the weight of the dishwasher door is small. The pulling force on the friction damping module formed by the rotational torque and the damping force generated by the friction damping module are insufficient to overcome the pulling force of the spring pull rod, so that the dishwasher door can be automatically closed under the action of the spring pull rod.

[0012] When the dishwasher door is in an open state at a large angle (for example, greater than 15°), the rotational torque generated by the weight of the dishwasher door is large, and the pulling force on the friction damping module formed by the rotational torque is greater than the pulling force of the spring pull rod but less than the sum of the pulling force of the spring pull rod and the damping force generated by the friction damping module, so that the dishwasher door can automatically hover when it is opened at a large angle.

[0013] The specific structure of the friction damping module in the present invention is as follows: the friction damping module includes a linkage rod, one end of the linkage rod close to the spring pull rod is connected to a linkage block through a second hinge shaft, the other end of the linkage rod is connected to the door body connecting seat through the first hinge shaft, and a first friction block and a second friction block are arranged on both sides of the second hinge shaft, which are respectively in contact with the two side surfaces of the damping groove, and the first friction block is rotatably connected to the linkage block, and the second friction block is rotatably connected to the linkage rod.

[0014] A dishwasher hinge with double door body balance of the present invention also includes a door body moving mechanism arranged on the door body connecting seat, and the door body connecting seat is provided with a first slide groove and a second slide groove arranged adjacent to each other. The door body moving mechanism includes a first rack slidably arranged in the first slide groove, and a second rack slidably arranged in the second slide groove. A linkage meshing tooth meshing with the first rack is arranged at a position of the linkage rod close to the first hinge shaft. A rotatable transmission gear is arranged on the door body connecting seat, and one end of the transmission gear has a large gear and the other end has a small gear, and the small gear is meshed with the first rack, and the large gear is meshed with the second rack; the door body of the dishwasher is connected to the second rack through the door body connecting support.

[0015] Preferably, the door body connecting support is rotatably arranged on the second rack.

[0016] Wherein, the door body connection seat is provided with a door body positioning surface for leveling the door body when installing the door body. The door body is leveled on the door body positioning surface and connected to the second rack through the door body connection support.

[0017] In the above-mentioned door body moving mechanism, by the meshing connection between the linkage meshing teeth arranged on the linkage rod and the first rack, it is achieved that the dishwasher door can synchronously rise or fall along the door body positioning surface during the opening or closing process, that is, during the door opening process, the dishwasher door rises along the door body positioning surface to prevent the lower end of the dishwasher door from interfering with the ground, and during the door closing process, the dishwasher door descends along the door body positioning surface so that the lower end of the dishwasher door is flush with the lower end of the cabinet door, thereby improving the overall appearance quality of the dishwasher and the storage cabinet after the combined installation and connection.

[0018] Preferably, a draw hook is provided on the linkage block, and one end of the spring pull rod is connected to the draw hook.

[0019] By arranging a combination structure of a linkage rod and a linkage block on the friction damping module, and arranging a hook on the linkage block, the spring pull rod can pull the linkage block to rotate around the second hinge shaft, and the first friction block and the second friction block which are rotatably connected to the linkage block and the linkage rod are pressed toward both sides of the damping groove. On the one hand, this ensures that the tension of the spring pull rod can be transmitted to the door body moving mechanism through the friction damping module. On the other hand, as the tension of the spring pull rod increases during the door opening process, the tightening force on both sides of the damping groove of the first friction block and the second friction block also increases simultaneously, thereby achieving a synchronous increase in the tension of the spring pull rod and the damping force, which is conducive to better balancing the weight of the door body.

[0020] Preferably, an extension arm is extended from the cabinet connecting bracket.

[0021] In the present invention, the spring pull rod is connected to the extension arm via a spring.

[0022] The connection strength between the cabinet connecting bracket and the dishwasher cabinet can be improved by providing the extension arm, and is convenient for installing the spring.

[0023] As a further improvement of the present invention, the teeth on the first rack used for meshing with the linkage meshing teeth on the linkage rod are sparse teeth with relatively large pitch, and the teeth on the first rack used for meshing with the pinion on the transmission gear are dense teeth with relatively small pitch.

[0024] The above-mentioned arrangement of sparse teeth and dense teeth on the first rack is conducive to optimizing and adjusting the moving speed of the dishwasher door connected to the door body moving mechanism.

[0025] Preferably, an elastic gasket is connected to the central pin shaft and is used to make the linkage rod flush against the end surface of the cabinet connecting bracket.

[0026] In the present invention, the door body connecting seat includes a first slide slot seat and a second slide slot seat that are adjacent to each other, and the first slide slot seat and the second slide slot seat are slide slot seats manufactured by stamping. The first slide slot seat is provided with the first slide slot, and the second slide slot seat is provided with the second slide slot.

[0027] In the present invention, a grounding hook is also provided on the door body connecting seat.

[0028] The beneficial effects of the present invention are:

[0029] First, the dishwasher hinge with double door body balance of the present invention realizes the double balance function of the dishwasher door being able to close automatically when opened at a small angle and to automatically hover when opened at a large angle by arranging a damping groove in the cabinet connecting bracket and arranging a friction damping module and a spring pull rod in the damping groove.

[0030] Secondly, the dishwasher hinge of the present invention has a double balance of the door body. In the door body moving mechanism, the meshing connection between the linkage meshing teeth arranged on the linkage rod and the first rack is realized, so that the dishwasher door can be synchronously raised or lowered along the door body positioning surface during the opening or closing process. That is, during the door opening process, the dishwasher door rises along the door body positioning surface to prevent the lower end of the dishwasher door from interfering with the ground; during the door closing process, the dishwasher door descends along the door body positioning surface so that the lower end of the dishwasher door is flush with the lower end of the cabinet door, thereby improving the overall appearance quality of the dishwasher and the storage cabinet after the combined installation and connection.

[0031] Third, a dishwasher hinge with double door body balance of the present invention, by arranging a combination structure of a linkage rod and a linkage block on the friction damping module, and arranging a hook on the linkage block, enables the spring pull rod to pull the linkage block to rotate around the second hinge shaft, and enables the first friction block and the second friction block rotatably connected to the linkage block and the linkage rod to be tightened in the direction of both sides of the damping groove, thereby, on the one hand, ensuring that the tension of the spring pull rod can be transmitted to the door body moving mechanism through the friction damping module, and on the other hand, as the tension of the spring pull rod increases during the door opening process, the tightening force on both sides of the damping groove of the first friction block and the second friction block also increases simultaneously, thereby achieving the synchronous increase of the spring pull rod tension and the damping force, which is conducive to better balancing the weight of the door body.

[0032] Fourthly, the hinge of the dishwasher with double door balance of the present invention can improve the connection strength between the cabinet connecting bracket and the dishwasher cabinet by providing an extension arm, and is beneficial to the installation of the spring.

[0033] Fifth, the dishwasher hinge with double door body balance of the present invention is conducive to optimizing and adjusting the moving speed of the dishwasher door connected to the door body moving mechanism by arranging sparse teeth and dense teeth on the first rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional structural schematic diagram of a dishwasher hinge with double door body balance of the present invention (the hinge is in an open state);

[0035] Figure 2 yes Figure 1 A partial enlarged view of

[0036] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the door moving mechanism;

[0037] Figure 4 yes Figure 3 A three-dimensional structural diagram after the door body connection seat is hidden on the basis;

[0038] Figure 5 yes Figure 1 Rear view (partial view);

[0039] Figure 6 yes Figure 1 A three-dimensional structural diagram of a dishwasher hinge in a closed state;

[0040] Figure 7 It is a structural schematic diagram of the cabinet connection bracket;

[0041] Figure 8 It is a structural schematic diagram of the linkage rod;

[0042] Fig. 9 It is a structural schematic diagram of the door body connecting seat;

[0043] Fig.10 is a schematic diagram of the structure of the first rack;

[0044] Fig.11 Schematic diagram of the structure of the second rack.

[0045] In the figure: 1, cabinet connecting bracket, 2, door connecting seat, 3, center pin, 4, damping groove, 5, friction damping module, 6, spring pull rod, 7, first hinge shaft, 8, linkage rod, 9, second hinge shaft, 10, linkage block, 11, first friction block, 12, second friction block, 13, door moving mechanism, 14, first slide groove, 15, second slide groove, 16, first rack, 17, second rack, 18, linkage meshing teeth, 19, transmission gear, 20, large gear, 21, small gear, 22, door positioning surface, 23, draw hook, 24, extension arm, 25, sparse teeth, 26, dense teeth, 27, elastic gasket, 28, first slide groove seat, 29, second slide groove seat, 30, door connecting support, 31, grounding hook. DETAILED DESCRIPTION

[0046] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0047] like Figures 1 to 11 The figure shows an embodiment of a dishwasher hinge with double door balance of the present invention, comprising a cabinet connecting bracket 1 for connecting to the cabinet of the dishwasher, and a door connecting seat 2 for connecting to the door of the dishwasher, one end of the cabinet connecting bracket 1 and one end of the door connecting seat 2 are connected to each other in relative rotation through a center pin shaft 3, a damping groove 4 is provided on the cabinet connecting bracket 1, a friction damping module 5 is provided in the damping groove 4, one end of the friction damping module 5 is connected to a spring pull rod 6, and the other end of the friction damping module 5 is connected to the door connecting seat 2 through a first hinge shaft 7.

[0048] In the above technical solution, by arranging a damping groove 4 in the cabinet connecting bracket 1, and arranging a friction damping module 5 and a spring pull rod 6 in the damping groove 4, a dual balancing function is achieved that the dishwasher door can close automatically when opened at a small angle and can automatically hover when opened at a large angle.

[0049] The specific implementation process of the above dual balancing function is analyzed as follows:

[0050] When the dishwasher door is in a small-angle open state (for example, less than 15°), the rotational torque generated by the self-weight of the dishwasher door is small. The pulling force on the friction damping module 5 formed by the rotational torque and the damping force generated by the friction damping module are insufficient to overcome the pulling force of the spring pull rod 6, so that the dishwasher door can be automatically closed under the action of the spring pull rod 6.

[0051] When the dishwasher door is in a state of being opened at a large angle (for example, greater than 15°), the rotational torque generated by the deadweight of the dishwasher door is relatively large, and the pulling force on the friction damping module 5 formed by the rotational torque is greater than the pulling force of the spring pull rod 6 but less than the sum of the pulling force of the spring pull rod 6 and the damping force generated by the friction damping module 5, so that the dishwasher door can automatically hover when it is opened at a large angle.

[0052] The specific structure of the friction damping module 5 in this embodiment is as follows: the friction damping module 5 includes a linkage rod 8, one end of the linkage rod 8 close to the spring pull rod 6 is connected to a linkage block 10 through a second hinge shaft 9, the other end of the linkage rod 8 is connected to the door body connecting seat 2 through the first hinge shaft 7, and a first friction block 11 and a second friction block 12 are arranged on both sides of the second hinge shaft 9, which are respectively in contact with the two side surfaces of the damping groove 4, and the first friction block 11 is rotatably connected to the linkage block 10, and the second friction block 12 is rotatably connected to the linkage rod 8.

[0053] A dishwasher hinge with double door body balance in this embodiment also includes a door body moving mechanism 13 arranged on the door body connecting seat 2, and the door body connecting seat 2 is provided with a first slide groove 14 and a second slide groove 15 arranged adjacent to each other. The door body moving mechanism 13 includes a first rack 16 slidably set in the first slide groove 14, and a second rack 17 slidably set in the second slide groove 15. A linkage meshing tooth 18 meshing with the first rack 16 is set on the linkage rod 8 near the first hinge shaft 7. A rotatable transmission gear 19 is arranged on the door body connecting seat 2, and one end of the transmission gear 19 has a large gear 20 and the other end has a small gear 21, and the small gear 21 is meshed with the first rack 16, and the large gear 20 is meshed with the second rack 17; the door body of the dishwasher is connected to the second rack 17 through the door body connecting support 30.

[0054] Preferably, the door body connecting support 30 is rotatably disposed on the second rack.

[0055] The door body connection seat 2 is provided with a door body positioning surface 22 for leveling the door body when installing the door body. The door body is leveled on the door body positioning surface 22 and connected to the second rack 17 through the door body connection support 30.

[0056] In the above-mentioned door body moving mechanism 13, through the meshing connection between the linkage meshing teeth 18 arranged on the linkage rod 8 and the first rack 16, it is achieved that the dishwasher door can synchronously rise or fall along the door body positioning surface 22 during the opening or closing process, that is, during the door opening process, the dishwasher door rises along the door body positioning surface 22 to prevent the lower end of the dishwasher door from interfering with the ground, and during the door closing process, the dishwasher door descends along the door body positioning surface 22 so that the lower end of the dishwasher door is flush with the lower end of the cabinet door, thereby improving the overall appearance quality of the dishwasher and the storage cabinet after the combined installation and connection.

[0057] Preferably, a hook 23 is provided on the linkage block 10 , and one end of the spring pull rod 6 is connected to the hook 23 .

[0058] By arranging a combined structure of a linkage rod 8 and a linkage block 10 on the friction damping module 5, and arranging a hook 23 on the linkage block 10, the spring pull rod 6 can pull the linkage block 10 to rotate around the second hinge shaft 9, and make the first friction block 11 and the second friction block 12 which are rotatably connected to the linkage block 10 and the linkage rod 8 press toward the two sides of the damping groove 4, thereby on the one hand ensuring that the tension of the spring pull rod 6 can be transmitted to the door body moving mechanism 13 through the friction damping module 5, and on the other hand, as the tension of the spring pull rod 6 increases during the door opening process, the tightening force of the first friction block 11 and the second friction block 12 on both sides of the damping groove 4 also increases simultaneously, thereby achieving the synchronous increase of the tension of the spring pull rod 6 and the damping force, which is conducive to better balancing the weight of the door body.

[0059] Preferably, an extension arm 24 is extended from the cabinet connecting bracket 1 .

[0060] In this embodiment, the spring pull rod 6 is connected to the extension arm 24 via a spring.

[0061] The provision of the extension arm 24 can improve the connection strength between the cabinet connecting bracket 1 and the dishwasher cabinet, and facilitate the installation of the spring.

[0062] As a further improvement of this embodiment, the teeth on the first rack 16 used for meshing with the linkage meshing teeth 18 on the linkage rod 8 are sparse teeth 25 with a relatively large pitch, and the teeth on the first rack 16 used for meshing with the pinion 21 on the transmission gear 19 are dense teeth 26 with a relatively small pitch.

[0063] The above-mentioned arrangement of the sparse teeth 25 and the dense teeth 26 on the first rack 16 is conducive to optimizing and adjusting the moving speed of the dishwasher door connected to the door moving mechanism 13 .

[0064] Preferably, an elastic gasket 27 is connected to the central pin shaft 3 to enable the linkage rod 8 to lie flush against the end surface of the cabinet connecting bracket 1 .

[0065] In this embodiment, the door body connecting seat 2 includes a first slide slot seat 28 and a second slide slot seat 29 which are adjacently connected, and the first slide slot seat 28 and the second slide slot seat 29 are slide slot seats manufactured by stamping. The first slide slot seat 28 is provided with the first slide slot 14, and the second slide slot seat 29 is provided with the second slide slot 15.

[0066] In this embodiment, a grounding hook 31 is further provided on the door body connecting seat 2 .

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A dishwasher hinge with double door balance, It is characterized in that The cabinet connecting bracket comprises a cabinet connecting bracket for connecting to the cabinet of the dishwasher and a door connecting seat for connecting to the door of the dishwasher. One end of the cabinet connecting bracket and one end of the door connecting seat are connected to each other in relative rotation through a central pin shaft. A damping groove is arranged on the cabinet connecting bracket. A friction damping module is arranged in the damping groove. One end of the friction damping module is connected to a spring pull rod. The other end of the friction damping module is connected to the door connecting seat through a first hinge shaft. The friction damping module comprises a linkage rod. One end of the linkage rod close to the spring pull rod is connected to a A linkage block, the other end of the linkage rod is connected to the door body connection seat through the first hinge shaft, and a first friction block and a second friction block are arranged on both sides of the second hinge shaft, respectively contacting the two side surfaces of the damping groove, and the first friction block is rotatably connected to the linkage block, and the second friction block is rotatably connected to the linkage rod; by arranging a damping groove on the cabinet connection bracket, and arranging a friction damping module and a spring pull rod in the damping groove, a dual balancing function of the dishwasher door being able to close automatically when opened at a small angle and being able to automatically hover when opened at a large angle is achieved; The invention also comprises a door moving mechanism arranged on the door connecting seat, wherein the door connecting seat is provided with a first slide groove and a second slide groove arranged adjacent to each other, the door moving mechanism comprises a first rack slidably arranged in the first slide groove, a second rack slidably arranged in the second slide groove, a linkage meshing tooth meshing with the first rack is arranged at a position of the linkage rod close to the first hinge shaft, a rotatable transmission gear is arranged on the door connecting seat, one end of the transmission gear has a large gear and the other end has a small gear, and the small gear meshes with the first rack, and the large gear meshes with the second rack; the door of the dishwasher is connected to the second rack through the door connecting support; the door connecting support is rotatably arranged on the second rack; An extension arm is extended on the cabinet connecting bracket.

2. A dishwasher hinge with double door balance according to claim 1, It is characterized in that A draw hook is provided on the linkage block, and one end of the spring pull rod is connected to the draw hook.

3. A dishwasher hinge with double door balance according to claim 1, It is characterized in that The spring pull rod is connected to the extension arm through a spring.

4. A dishwasher hinge with double door balance according to claim 1, It is characterized in that The teeth on the first rack that mesh with the linkage meshing teeth on the linkage rod are sparse teeth with a relatively large pitch, and the teeth on the first rack that mesh with the pinion on the transmission gear are dense teeth with a relatively small pitch.

5. A dishwasher hinge with double door balance according to claim 1, It is characterized in that An elastic gasket is connected to the central pin shaft and is used to make the linkage rod lie flat against the end surface of the cabinet connection bracket.

6. A dishwasher hinge with double door balance according to claim 1, It is characterized in that The door body connecting seat includes a first slide slot seat and a second slide slot seat which are adjacently connected, and the first slide slot seat and the second slide slot seat are slide slot seats manufactured by stamping.

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