Box door hinge with door locking force

Abstract

A box door hinge with door locking force comprises a base, a containing cavity is formed in the base, a hinge arm is installed in the containing cavity in a hinged mode through a first hinge shaft, and the hinge arm swings around the first hinge shaft to achieve opening and closing of a box door. A first sliding groove and a second sliding groove are further formed in the base in a penetrating mode, a sliding block is installed in the containing cavity, a first sliding shaft and a second sliding shaft are installed at the two ends of the sliding block respectively, the two ends of the first sliding shaft extend into the first sliding groove, and a third sliding shaft is further arranged on the hinge arm. The two ends of the reset tension spring are hung and buckled between the second sliding shaft and the third sliding shaft, and the reset tension spring generates tension to drive the hinge arm to swing in the closing direction all the time. The hinge has the advantages that in the design of the hinge, the locking groove in the hinge arm is matched with the first sliding shaft on the sliding block in a buckled mode, when the box door is closed to a set angle, the first sliding shaft can be automatically clamped into the locking groove, and effective locking force is formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hardware fitting, in particular to a box door hinge with door locking force. BACKGROUND

[0002] With the continuous development of the household appliance manufacturing industry, the box door hinge as an indispensable part of household appliances directly affects the use experience and service life of household appliances. The box door hinges on the market are mainly divided into two categories: ordinary hinges and hinges with locking function. The ordinary hinge is mainly used to connect the box door and the box body, so that the box door can be freely opened and closed, but usually lacks locking function, which easily leads to unstable positioning of the box door when closing, affecting the use experience. While the hinge with locking function can solve the problem of box door positioning to a certain extent, there are still the following main defects in the prior art:

[0003] 1. Complex structure, high cost: the existing hinge with locking function usually adopts a complex spring mechanism or multiple locking components, which not only increases the manufacturing cost, but also makes the installation process tedious. In addition, such a complex structure is prone to wear or looseness due to long-term use, thereby affecting the stability of the locking function.

[0004] 2. The box door locking is usually achieved by spring or buckle mechanism, but due to design defects, the locking assembly in the prior art often cannot provide sufficient locking force, resulting in accidental opening of the box door under slight vibration or external force. This is particularly undesirable in scenarios where the box door needs to be kept tightly closed (such as storage cabinets or tool boxes).

[0005] 3. The reset performance of the box door opening and closing directly affects the user experience. Although some existing hinges have certain reset ability, their reset speed and force cannot be adjusted, which easily leads to impact noise or incomplete closing of the box door when closing, further reducing user satisfaction, so it is necessary to make further improvements. INVENTION CONTENTS

[0006] The utility model aims at overcoming the shortcomings of the prior art, and provides a box door hinge with door locking force, which has simple structure, convenient use, excellent locking performance, strong reset ability and long service life.

[0007] The utility model aims at overcoming the shortcomings of the prior art, and provides a box door hinge with door locking force, which has simple structure, convenient use, excellent locking performance, strong reset ability and long service life.

[0008] The first sliding slot and the second sliding slot are arranged through two sides of the base, a sliding block is arranged in the accommodating cavity, the first sliding shaft and the second sliding shaft are respectively arranged at two ends of the sliding block, the first sliding shaft extends into the first sliding slot at two ends, the second sliding shaft extends into the second sliding slot at two ends, and the sliding block slides along the first sliding slot and the second sliding slot under the guidance of the first sliding shaft and the second sliding shaft.

[0009] The third sliding shaft is arranged on the hinge arm, the two ends of the reset tension spring are respectively hung between the second sliding shaft and the third sliding shaft, the reset tension spring generates a pulling force to drive the hinge arm to swing in the closing direction all the time.

[0010] The hinge arm is provided with a locking groove, when the hinge arm is closed to a set angle, the first sliding shaft is buckled into the locking groove, and a door closing locking force is generated.

[0011] Further, the base comprises a first side plate and a second side plate, and the two are connected through an end plate, and the three are distributed in an n shape.

[0012] Further, the first side plate, the second side plate and the end plate are integrally bent from a metal plate, and the first sliding shaft and the second sliding shaft are arranged on the first side plate and the second side plate.

[0013] Further, the sliding block comprises a first sliding plate and a second sliding plate, the first sliding plate and the second sliding plate are connected into an integral whole through a rib plate, and the first sliding shaft and the second sliding shaft are arranged at two ends of the first sliding plate and the second sliding plate.

[0014] Further, the hinge arm is provided with a pressing camber surface, and the pressing camber surface is connected with the locking groove.

[0015] The utility model discloses the beneficial effect is: 1, simple structure, low in production cost, improve market competitiveness.

[0016] 2, the hinge design of the utility model, through the buckle cooperation of the locking groove on the hinge arm and the first sliding shaft on the sliding block, when the box door is closed to a set angle, the first sliding shaft can be automatically buckled into the locking groove, and effective locking force is formed. This locking design can ensure that the box door remains tightly closed in a non-operation state, avoid accidental opening caused by vibration, external force interference or inclination, and is especially suitable for scenes that need to keep the box door stably closed, such as storage cabinets, tool cabinets or industrial equipment box bodies.

[0017] 3, the utility model passes through the force design of reset tension spring, makes the sliding block move along the sliding slot to the hinge arm direction, and when the hinge is closed to a set angle, the mutual action between the first sliding shaft pushed by the sliding block and the hinge arm can realize the pause effect. This pause design helps to avoid the situation that the box door is closed too fast or freely falls, so as to protect the box door and the box body from impact damage, and improve the stability and controllability of the closing process.

[0018] 4. The utility model discloses a reset tension spring one end hangs the buckle in the second slide axle on the sliding block, the other end hangs the buckle between the third slide axle of hinged arm, through the continuous tension of tension spring, drive sliding block along the direction of slide groove and slide, drive hinged arm swing to the closing direction. Hinged arm opens and closes to make spring telescopic, produces spring force, balances door body gravity, makes door body open and close stable or hover, can also provide locking force after closing, therefore only needs a tension spring in the case, can realize the closing of hinge and locking after closing. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the schematic diagram that the utility model discloses hinge is in the closed state.

[0020] Figure 2 It is the structure section view that the utility model discloses hinge is in the closed state.

[0021] Figure 3 It is the schematic diagram that the utility model discloses hinge is in the open state.

[0022] Figure 4 It is the structure section view that the utility model discloses hinge is in the open state.

[0023] Figure 5 、 6 It is the structure exploded view of the utility model. DETAILED DESCRIPTION

[0024] The utility model discloses a box door hinge with lock door force, it is characterized in that: it includes base 1, is provided with containing cavity 2 in base 1, containing cavity 2 is hingedly installed with hinged arm 4 through first hinge shaft 21, hinged arm 4 swing around first hinge shaft 21 realizes the opening and closing of box door;

[0025] First slide groove 11 and second slide groove 12 are still provided with on the both sides of base 1 and extend through it, containing cavity 2 is installed with sliding block 3, and first slide shaft 31 and second slide shaft 32 are installed at the both ends of sliding block 3 respectively, and the both ends of first slide shaft 31 extend into first slide groove 11, and the both ends of second slide shaft 32 extend into second slide groove 12, and sliding block 3 slides along first slide groove 11 and second slide groove 12 under the guidance of first slide shaft 31 and second slide shaft 32;

[0026] Third slide shaft 41 is still provided on hinged arm 4, and reset tension spring 5 is hung in between second slide shaft 32 and third slide shaft 41 respectively at the both ends, and reset tension spring 5 generates tension and drives hinged arm 4 to swing to the closing direction all the time;

[0027] Locking groove 42 is set up on hinged arm 4, and first slide shaft 31 is buckled into locking groove 42 when hinged arm 4 closes to the set angle, and generates door locking force.

[0028] In one embodiment: the base 1 includes a first side plate 13 and a second side plate 14, which are connected by an end plate 15, and the three are arranged in an "n" shape.

[0029] In one embodiment: the first side plate 13, the second side plate 14 and the end plate 15 are integrally bent from metal sheets, and the first sliding shaft 31 and the second sliding shaft 32 are disposed on the first side plate 13 and the second side plate 14.

[0030] In one embodiment: the slider 3 includes a first slide plate 34 and a second slide plate 35, the first slide plate 34 and the second slide plate 35 are connected as one unit by a rib plate 36, and the first slide shaft 31 and the second slide shaft 32 are installed at both ends of the first slide plate 34 and the second slide plate 35.

[0031] In one embodiment: the hinge arm 4 is provided with a pressing arc surface 43, and the pressing arc surface is connected to the locking groove 42.

[0032] Working principle: In this case, the hinge arm 4 is hinged to the receiving cavity 2 of the base 1 via the first hinge shaft 21, and swings around the first hinge shaft 21, thereby driving the door to open and close. As the core component connecting the door and the base, the hinge arm is designed to ensure the smoothness of the door's opening and closing movement. During installation and use, the base is usually connected to the door body, and the hinge arm is connected to the main body.

[0033] The slide block 3 is installed within the accommodating cavity 2, with a first sliding shaft 31 and a second sliding shaft 32 mounted at its two ends. The first and second sliding shafts are respectively embedded in the first sliding groove 11 and the second sliding groove 12 on the base, ensuring that the slide block can slide smoothly along the trajectory set by the grooves. The movement of the slide block not only provides reliable auxiliary support for the swing of the hinge arm but also, through its cooperation with the return spring, achieves the automatic closing and locking function of the cabinet door.

[0034] One key point to note is the ingenious design of the return spring 5 in this invention, which possesses multiple functions. For example, one end of it is hooked onto the second sliding shaft 32 on the slider, and the other end is hooked onto the third sliding shaft 41 of the hinge arm. When the door is opened, the hinge arm swings around the first hinge shaft 21, the slider moves along the slide groove, and the return spring is stretched and stores elastic potential energy. When the external force is removed, the return spring releases the tension, driving the hinge arm to swing in the closing direction, thus achieving the automatic closing function of the door. Simultaneously, the opening and closing of the hinge arm causes the spring to extend and retract, generating spring force to balance the weight of the door, allowing the door to open and close smoothly or achieve a hovering effect.

[0035] Wherein, in the closing process, when the box door approaches the closing position, the first sliding shaft 3 on the sliding block gradually approaches and finally clamps into the locking groove 42 on the hinged arm under the pulling force of the return spring. At this time, the pulling force of the return spring not only drives the sliding block to complete the movement, but also provides a continuous pulling force at the locking groove, ensuring that the box door is reliably locked after closing, and even if disturbed by external force, vibration, etc., the box door will not be accidentally opened. The locking function relies on the precise fit of the sliding block and the locking groove and the continuous pulling force of the return spring, which not only ensures the reliability of the locking, but also avoids the complexity of the structure caused by the additional components.

[0036] Further: in the case, through the clever layout of the sliding block and the hinged arm, a return spring can simultaneously realize the automatic resetting, locking function after closing and balancing the gravity of the door body of the box door, so that the door body opens and closes smoothly or produces a hovering effect at a certain angle, avoiding the complex design of additional locking devices or multiple springs in the prior art. This optimized design greatly simplifies the structure and reduces the manufacturing cost.

[0037] In addition, in the process of the box door approaching the closing position, the first sliding shaft first contacts the extrusion arc surface, and the return pulling force and the gravity of the box door are balanced by the mutual extrusion and friction of the extrusion arc surface and the first sliding shaft, so that the box door can automatically stay within a certain angle range. When the closing angle is less than the set value, the first sliding shaft gradually approaches the locking groove along the extrusion arc surface. Finally, the first sliding groove is clamped into the locking groove to lock the hinged arm.

[0038] Compared with the traditional technology, in the case, through the design that one end of the return spring is hung on the second sliding shaft of the sliding block and the other end is hung on the third sliding shaft of the hinged arm, only one spring is needed to realize the smooth opening and closing of the box door and the locking function after closing, avoiding the complex multi-component design. At the same time, the precise fit of the sliding block and the locking groove, combined with the continuous pulling force provided by the return spring, ensures that the box door remains tightly closed after closing, eliminating accidental opening caused by vibration or external force. The ingenious integration of the resetting and locking functions of the utility model provides a high-efficiency, simple and functional box door hinge design scheme, which has a wide application prospect.

[0039] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A box door hinge with locking door force, characterized by: It includes base (1), base (1) is provided with accommodation cavity (2) in, the accommodation cavity (2) is hingedly installed hinged arm (4) through first hinge shaft (21), the hinged arm (4) swings around first hinge shaft (21) and realizes the opening and closing of box door; The first sliding slot (11) and the second sliding slot (12) are further provided on the base (1) and extend through both sides thereof, the sliding block (3) is installed in the accommodation cavity (2), the first sliding shaft (31) and the second sliding shaft (32) are respectively installed at both ends of the sliding block (3), the first sliding shaft (31) extends into the first sliding slot (11) at both ends, the second sliding shaft (32) extends into the second sliding slot (12) at both ends, and the sliding block (3) slides along the first sliding slot (11) and the second sliding slot (12) under the guidance of the first sliding shaft (31) and the second sliding shaft (32). The third sliding shaft (41) is further provided on the hinged arm (4), the reset tension spring (5) is hung between the second sliding shaft (32) and the third sliding shaft (41) at both ends, and the reset tension spring (5) generates a pulling force to drive the hinged arm (4) to swing in the closing direction all the time. The locking groove (42) is provided on the hinged arm (4), when the hinged arm (4) is closed to a set angle, the first sliding shaft (31) is buckled into the locking groove (42), and a door locking force is generated.

2. A cabinet door hinge with locking door force according to claim 1, characterized in that: The base (1) includes the first side plate (13) and the second side plate (14), and the two are connected by the end plate (15), and the three are distributed in the shape of "n".

3. A cabinet door hinge with locking door force according to claim 2, characterized in that: The first side plate (13), the second side plate (14) and the end plate (15) are integrally bent from a metal plate, and the first sliding shaft (31) and the second sliding shaft (32) are provided on the first side plate (13) and the second side plate (14).

4. A case door hinge with a locking door force according to claim 1, characterized in that: The sliding block (3) includes the first sliding plate (34) and the second sliding plate (35), the first sliding plate (34) and the second sliding plate (35) are connected into an integral whole by the rib plate (36), and the first sliding shaft (31) and the second sliding shaft (32) are installed at both ends of the first sliding plate (34) and the second sliding plate (35).

5. A case door hinge with a locking door force according to claim 1, characterized in that: The extrusion camber (43) is provided on the hinged arm (4), and the pressing camber is connected with the locking groove (42).

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