Refrigerator damper with throttle valve structure

Abstract

The refrigerator damper with the throttle valve structure comprises a cylinder barrel, a piston rod is movably arranged in the cylinder barrel, one end of the piston rod is arranged outside the cylinder barrel, and the other end of the piston rod is connected with the throttle valve structure used for throttling and controlling the moving speed of the piston rod. The throttle valve structure includes a piston unit and a ball unit for reducing a permeation flow rate. The refrigerator door damper is reasonable in structural design, and the throttle valve structure is arranged in the damper, so that when the refrigerator door is closed to be smaller than or equal to a set critical angle, the extension section of the connecting rod makes contact with the damper and is subjected to the action of the damper, the closing speed of the refrigerator door is slowed down, and the service life of the refrigerator door is prolonged. Therefore, possible impact between the refrigerator door and the refrigerator cabinet body when the refrigerator door is closed is avoided, the refrigerator door is closed stably, noise of door closing is eliminated, a sealing magnetic strip between the refrigerator door and the refrigerator cabinet body can be effectively protected, and the service life of a product is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to damper field especially relates to a refrigerator damper with throttle valve structure. BACKGROUND

[0002] The refrigerator is a kind of refrigeration equipment to keep constant low temperature, it is also a kind of civil product to keep constant low temperature cold state of food or other articles.Refrigerator includes refrigerator cabinet and refrigerator door in structure, the rotation of the pin shaft of cooperation is realized between the refrigerator door and the refrigerator cabinet of refrigerator door relative to the rotation connection of refrigerator cabinet.

[0003] The rotation connection structure of refrigerator door and refrigerator cabinet in prior art has the following problems: in the process of closing refrigerator door, due to the effect of inertia, refrigerator door continues to rotate after hand is released, impact occurs between refrigerator door and refrigerator cabinet, and the sound is loud, which reduces the service life of sealing magnetic strip between refrigerator door and refrigerator cabinet on the one hand, and the large door closing sound also affects the quietness of environment. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the prior art, provides a refrigerator damper with throttle valve structure.

[0005] The utility model provides a refrigerator damper with throttle valve structure, including cylinder, the piston rod is movably arranged in the cylinder, the piston rod one end is arranged in the outside of cylinder, the piston rod other end is connected with the throttle valve structure for throttling, control piston rod moving speed, the throttle valve structure includes piston unit and the ball unit for reducing the penetration flow rate.

[0006] Preferably, the piston unit includes a first piston and a second piston fixedly connected to each other, the piston rod end is fixedly inserted into the piston unit, and the piston rod moves to drive the piston unit to move synchronously;The ball unit includes a plurality of throttling balls uniformly arranged in the piston unit.

[0007] Preferably, the first piston is uniformly provided with a plurality of first grooves around the center, the second piston is uniformly provided with a plurality of second grooves matched with the first grooves around the center, the first grooves and the matched second grooves form a flow space, and the throttling balls are movably arranged in the flow space.

[0008] Preferably, the first piston is provided with a first flow channel communicated with the first grooves, the second piston is provided with a second flow channel communicated with the second grooves, the first flow channel and the second flow channel are communicated through the flow space, the inside of the cylinder is a liquid cavity for filling damping liquid, and the first flow channel and the second flow channel are communicated with the liquid cavity.

[0009] Preferably, the cylinder is sleeved with a front end cover unit at one end away from the throttle valve structure, the front end cover unit seals the liquid cavity, an end face hole is formed on the front end cover unit, and the piston rod extends to the outside of the cylinder through the end face hole; a return spring is sleeved on the piston rod, one end of the return spring is in abutting connection with the second piston, and the other end of the return spring is in abutting connection with the front end cover unit.

[0010] Preferably, the one end of the cylinder away from the front end cover unit is provided with a connecting structure, and the inner wall of the connecting structure is in abutting connection with the piston unit.

[0011] Preferably, a sealing ring for sealing is arranged between the outer edge of the second piston and the inner wall of the cylinder.

[0012] Compared with the prior art, the utility model has the advantages that by setting the throttle valve structure in the damper, when the refrigerator door is closed to less than or equal to the set critical angle, the connecting rod extension section contacts the damper and is affected by the damper, so that the closing speed of the refrigerator door is slowed down, the impact that may occur when the refrigerator door is closed is avoided, the refrigerator door is stably closed, the noise of closing the door is eliminated, and the sealing magnetic stripe between the refrigerator door and the refrigerator cabinet is effectively protected, so that the service life of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is the structural schematic diagram of the utility model;

[0014] Fig. 2 is the sectional structure schematic diagram of the utility model;

[0015] Fig. 3 is the exploded structural schematic diagram of the throttle valve structure of the utility model.

[0016] Reference signs: 1, cylinder; 2, piston rod; 3, first piston; 4, second piston; 5, throttle ball; 6, first groove; 7, second groove; 8, flow space; 9, first flow channel; 10, second flow channel; 11, liquid cavity; 12, front end cover unit; 13, end face hole; 14, return spring; 15, connecting structure; 16, sealing ring. DETAILED DESCRIPTION

[0017] In the following, a plurality of embodiments of the utility model will be disclosed by means of drawings. For the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the utility model. That is to say, in some embodiments of the utility model, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in a simple schematic manner in the drawings.

[0018] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0019] Furthermore, in addition to indicating orientation or positional relationship, the aforementioned terms may also be used to indicate other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in this utility model can be understood according to the specific circumstances.

[0020] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts. The connection methods described herein are existing technologies without any modifications and are common knowledge to those skilled in the art. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] like Figs. 1 to 3 As shown, this utility model provides a refrigerator damper with a throttling valve structure, including a cylinder 1; specifically, a piston rod 2 is movably disposed inside the cylinder 1, one end of the piston rod 2 is arranged outside the cylinder 1, and the other end of the piston rod 2 is connected to a throttling valve structure for throttling and controlling the moving speed of the piston rod 2. The throttling valve structure includes a piston unit and a ball unit for reducing the permeation flow rate.

[0023] The piston unit comprises a first piston 3 and a second piston 4 fixedly connected with each other, and the piston rod 2 is fixedly inserted into the piston unit at the end thereof, and the piston rod 2 moves to drive the piston unit to move synchronously; the ball unit comprises a plurality of throttling balls 5 uniformly arranged in the piston unit.

[0024] A plurality of first grooves 6 are uniformly arranged around the center of the first piston 3, and a plurality of second grooves 7 matched with the first grooves 6 are uniformly arranged around the center of the second piston 4; specifically, the first grooves 6 and the second grooves 7 matched therewith form flow spaces 8, and the throttling balls 5 are movably arranged in the flow spaces 8.

[0025] A first flow channel 9 communicating with the first grooves 6 is arranged through the first piston 3, and a second flow channel 10 communicating with the second grooves 7 is arranged through the second piston 4; specifically, the first flow channel 9 and the second flow channel 10 are communicated through the flow spaces 8, the inside of the cylinder barrel 1 is a liquid cavity 11 for filling damping liquid, and the first flow channel 9 and the second flow channel 10 are both communicated with the liquid cavity 11.

[0026] The end of the cylinder barrel 1 away from the throttling valve structure is sleeved with a front end cover unit 12, the front end cover unit 12 seals the liquid cavity 11, an end face hole 13 is formed in the front end cover unit 12, and the end of the piston rod 2 extends to the outside of the cylinder barrel 1 through the end face hole 13; specifically, a return spring 14 is sleeved on the piston rod 2, one end of the return spring 14 is in abutting connection with the second piston 4, and the other end of the return spring 14 is in abutting connection with the front end cover unit 12.

[0027] The end of the cylinder barrel 1 away from the front end cover unit 12 is provided with a connecting structure 15, and the inner wall of the connecting structure 15 is in abutting connection with the piston unit.

[0028] A sealing ring 16 for sealing is arranged between the outer edge of the second piston 4 and the inner wall of the cylinder barrel 1, so that the damping liquid cannot flow between the outer edge of the throttling valve structure and the inner wall of the cylinder barrel 1.

[0029] The working principle of the utility model is as follows: Fig. 2The state of the damper when the refrigerator door is closed is shown, when the refrigerator door needs to be opened, the refrigerator door drives the piston rod 2 to move outward, the piston rod 2 synchronously drives the throttle valve structure to move outward, the throttle valve structure moves along the inner wall of the cylinder 1 in the liquid cavity 11, the liquid cavity 11 is filled with damping liquid, the throttle valve structure moves outward to compress the return spring 14, and meanwhile, in the process that the throttle valve structure moves outward, the volume of the liquid cavity 11 is reduced, the inside of the throttle valve structure expands to extend space, and the damping liquid in the liquid cavity 11 penetrates into the extend space through the second flow channel 10, the gap between the throttle ball 5 and the flow space 8 and the first flow channel 9 in sequence. Therefore, in the process that the refrigerator door is opened, only the elastic force generated by the return spring 14 needs to be overcome, until the second piston 4 and the inner wall of the front end cover unit 12 abut, the stroke of the throttle valve structure reaches the maximum value, and the opening force of the door will not continue to increase, at this time, the damping liquid originally filled in the liquid cavity 11 all penetrates into the extend space.

[0030] When the refrigerator door needs to change from the opened state to the closed state, the refrigerator door is pushed inward until the connecting rod on the refrigerator door and the outer end of the piston rod 2 abut and connect, and drive the piston rod 2 to move inward, at this time, the return spring 14 starts to release the elastic force, the volume of the liquid cavity 11 gradually increases, but due to the hydraulic pressure of the damping liquid filled in the extend space, the speed of the return spring 14 releasing the elastic force is slowed down, that is, the hydraulic pressure of the damping liquid controls the piston rod 2 to slowly move inward, from the outside, the speed of the refrigerator door closing is slowed down, and the refrigerator door is in the process of stably closing inward, in this process, the damping liquid in the extend space penetrates into the liquid cavity 11 through the first flow channel 9, the gap between the throttle ball 5 and the flow space 8 and the second flow channel 10 in sequence, the volume of the extend space gradually and slowly decreases due to the loss of the damping liquid, the volume of the liquid cavity 11 slowly increases due to the penetration of the damping liquid, and until the inside of the first piston 3 and the connecting structure 15 abut and connect, the closing of the refrigerator door is completed.

[0031] The maximum stroke of the throttle valve structure moving in the cylinder 1 is 50mm; when the refrigerator door is opened, the angle of the pulling force overcoming the elastic force of the return spring 14 is 30°, that is, when the throttle valve structure moves outward by 50mm, the corresponding opening angle of the refrigerator door is 30°, and after 30°, the refrigerator door will not need to overcome the elastic force of the return spring 14 any more; correspondingly, when the refrigerator door is closed, the angle of the pushing force overcoming the hydraulic pressure of the damping liquid is 30°, that is, when the refrigerator door is closed to 30° with the refrigerator cabinet, the inward pushing force of the piston rod 2 starts to overcome the resistance brought by the hydraulic pressure of the damping liquid, so that the refrigerator is slowly closed, and the time from when the refrigerator door starts to be subjected to the hydraulic pressure to when the refrigerator door is completely closed is the time of the throttle valve structure moving inward by 50mm to overcome the hydraulic pressure.

[0032] The utility model discloses the advantages lie in: through setting the throttle valve structure in damper, can make the refrigerator door close to less than or equal to the critical angle set, connecting rod extension section contacts the damper and is affected by the damper, make the closing speed of refrigerator door slow, thereby avoid the impact that can take place with refrigerator cabinet when refrigerator door closes, make refrigerator door stable closing, thereby eliminate the noise of closing door, and can effectively protect the sealing magnetic stripe between refrigerator door and refrigerator cabinet, thereby improve the service life of product.

[0033] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0034] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means of mature bolt, rivet, welding, sticking and the like in the prior art, which will not be described in detail here.

[0035] The above content is only the preferred embodiment of the utility model, and for the ordinary skilled in the art, according to the idea of the utility model, various changes and changes can be made in the specific implementation mode and application range, and the content of the specification should not be understood as the limitation of the utility model. Any modification, equivalent replacement, improvement, etc. made in the spirit and principle of the utility model should be included in the scope of claims of the utility model.

Claims

1. A refrigerator damper with a throttle valve structure, comprising a cylinder, characterized in that: A piston rod is movably disposed inside the cylinder. One end of the piston rod is arranged outside the cylinder, and the other end of the piston rod is connected to a throttling valve structure for throttling and controlling the moving speed of the piston rod. The throttling valve structure includes a piston unit and a spherical unit for reducing the permeation velocity.

2. A refrigerator damper with a throttling valve structure according to claim 1, characterized in that: The piston unit includes a first piston and a second piston that are fixedly connected to each other. The end of the piston rod is fixedly inserted into the piston unit, and the movement of the piston rod drives the piston unit to move synchronously. The ball unit includes a number of throttling balls that are evenly arranged in the piston unit.

3. A refrigerator damper with a throttling valve structure according to claim 2, characterized in that: The first piston has several first grooves evenly arranged around its center, and the second piston has several second grooves evenly arranged around its center that match the first grooves. A flow space is formed between the first grooves and the matching second grooves, and the throttling ball is movable within the flow space.

4. A refrigerator damper with a throttling valve structure according to claim 3, characterized in that: The first piston has a first flow channel that communicates with the first groove, and the second piston has a second flow channel that communicates with the second groove. The first flow channel and the second flow channel are connected through a flow space. The inside of the cylinder is a liquid cavity for filling damping fluid. Both the first flow channel and the second flow channel are connected to the liquid cavity.

5. A refrigerator damper with a throttling valve structure according to claim 4, characterized in that: The cylinder barrel is fitted with a front end cover unit at the end away from the throttle valve structure. The front end cover unit seals the liquid chamber. An end hole is opened on the front end cover unit. The end of the piston rod extends to the outside of the cylinder barrel through the end hole. A return spring is fitted on the piston rod. One end of the return spring is in contact with the second piston, and the other end of the return spring is in contact with the front end cover unit.

6. A refrigerator damper with a throttling valve structure according to claim 5, characterized in that: The cylinder barrel is provided with a connecting structure at the end away from the front cover unit, and the inner wall of the connecting structure is in contact with the piston unit.

7. A refrigerator damper with a throttling valve structure according to claim 2, characterized in that: A sealing ring is provided between the outer edge of the second piston and the inner wall of the cylinder for sealing.

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