Anti-collision door handle and storage box

Abstract

The present invention provides an anti-collision door handle and a storage box, wherein the door handle includes a door latch, a handle base, and a handle body; the handle body is rotatably mounted on the handle base via a rotating shaft; a slider is provided between the handle body and the handle base, and the slider is slidably mounted on the handle base via a return spring; the slider includes a limiting fitting portion, and a limiting member capable of engaging with the limiting fitting portion is provided on the inner side of the handle body; the door handle also includes a roller and a positioning structure capable of engaging with each other; the roller and the positioning structure are respectively provided on the door latch and the handle body, or respectively provided on the handle body and the door latch; the positioning structure includes a roller entrance. The technical solution of the present invention solves the problem of existing storage box door handles being easily damaged by impact with the door latch.

Description

Technical Field

[0001] The present invention relates to the field of low-temperature and ultra-low-temperature storage boxes, and in particular to an anti-collision door handle and a storage box. Background Art

[0002] Existing door handles for low-temperature and ultra-low-temperature storage cabinets operate by rotating the handle (on the door) to engage and disengage with the latch (on the cabinet). However, even after the handle is disengaged from the latch, a significant force is still required to open the door due to the vacuum created by the low temperature inside the cabinet. Furthermore, when closing the door, the handle's angle can easily change, causing direct impact between the handle and the latch, potentially damaging the handle. Summary of the Invention

[0003] In view of the above technical problem that the existing door handle of a storage box is easily damaged by impacting the door latch, an anti-collision door handle and a storage box are provided.

[0004] The technical means adopted in the present invention are as follows:

[0005] An anti-collision door handle comprises a door latch, a handle base and a handle body;

[0006] The handle body is rotatably mounted on the handle base via a rotating shaft;

[0007] A slider is provided between the handle body and the handle base, and the slider is slidably mounted on the handle base via a return spring;

[0008] The slider includes a limit fitting portion, and the inner side surface of the handle body is provided with a limit piece that can engage with the limit fitting portion. The rotation of the handle body is restricted by the engagement between the limit fitting portion and the limit piece. The engagement between the limit fitting portion and the limit piece is released by sliding the slider, thereby releasing the restriction on the rotation of the handle body.

[0009] The door handle also includes a roller and a positioning structure that can engage with each other; the roller and the positioning structure are respectively arranged on the door latch and the handle body, or are respectively arranged on the handle body and the door latch; the positioning structure includes a roller entrance, and when the limiting matching part is engaged with the limiting member, the roller corresponds to the position of the roller entrance.

[0010] Furthermore, the front portion of the sliding block extends beyond the handle base.

[0011] Furthermore, when the front portion of the slider is not subjected to force, the position-limiting fitting portion is engaged with the position-limiting member.

[0012] Furthermore, when the front of the slider is subjected to force, the slider slides, and at the same time the return spring is compressed, and the limit fitting part releases the engagement with the limit member; when the force on the front of the slider is gradually released, the return spring extends and drives the slider to slide and reset, and the limit fitting part engages with the limit member.

[0013] Furthermore, the limiting fitting portion is wedge-shaped, and the limiting member is provided with a limiting groove matching the shape of the limiting fitting portion.

[0014] Furthermore, the positioning structure further includes a positioning groove, and when the engagement between the limiting matching portion and the limiting member is released:

[0015] The roller can slide into the positioning groove from the roller entrance by rotating the handle body to engage with the positioning structure, thereby locking the handle body to the door latch;

[0016] Alternatively, the handle body is rotated in the opposite direction to slide out of the positioning groove to release the engagement with the positioning structure, thereby releasing the locking of the handle body and the door latch.

[0017] Furthermore, the roller and the positioning structure are respectively provided on the door latch and the handle body;

[0018] The positioning structure is a double arc structure including arc I and arc II;

[0019] The roller entrance is located on the side of the double arc structure; the arc I is located at the bottom of the double arc structure; the arc II is the positioning groove, located at the top of the double arc structure; the arc I and the arc II are connected by an arc segment transition.

[0020] Furthermore, the roller and the positioning structure are respectively provided on the handle body and the door latch;

[0021] The positioning structure is an arc-shaped structure, the roller inlet is located at the top of the arc-shaped structure, and the positioning groove is located at the bottom of the arc-shaped structure.

[0022] Furthermore, a rolling element is provided between the inner side surface of the handle body and the handle base. When the handle body rotates, the rolling element can cause rolling friction between the handle body and the handle base, thereby making the rotation easier.

[0023] The present invention also provides a storage box, comprising a box body with an opening and a box door for closing the opening, and also comprising the anti-collision door handle, the door latch being fixedly mounted on the side of the box body, and the handle base being fixedly mounted on the side of the box door.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] The anti-collision door handle and storage box provided by the present invention can lock the rotation angle of the door handle after the door is opened through a sliding slider, a limit piece arranged on the handle body, and a reset spring, thereby preventing the handle body from rotating at will, thereby eliminating the situation where the door handle hits the door latch and is damaged due to improper operation by the user.

[0026] Based on the above reasons, the present invention can be widely promoted in the field of storage boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 This is a structural schematic diagram of the storage box of the present invention.

[0029] Figure 2 This is a schematic diagram of the storage box structure described in Example 1 of the present invention.

[0030] Figure 3 This is a schematic diagram of the locked state of the handle body described in Example 1 of the present invention.

[0031] Figure 4 This is a schematic diagram of the handle body starting to rotate and unlocking according to Example 1 of the present invention.

[0032] Figure 5 This is a schematic diagram of the state in which the handle body of Example 1 of the present invention is rotated to unlock the roller and the roller is located at the roller entrance.

[0033] Figure 6 This is a schematic diagram of the state in which the handle body according to Example 1 of the present invention is rotated to unlock the handle until the roller is disengaged from the positioning structure.

[0034] Figure 7 It is a structural schematic diagram of the slider and the return spring of the present invention.

[0035] Figure 8 This is a schematic diagram of the storage box structure described in Example 2 of the present invention.

[0036] Figure 9 This is a schematic diagram of the locked state of the handle body described in Example 2 of the present invention.

[0037] Figure 10This is a schematic diagram of the state in which the handle body of Example 2 of the present invention is rotated to unlock the roller and the roller is located at the roller entrance.

[0038] Figure 11 This is a schematic diagram of the state in which the handle body according to embodiment 2 of the present invention is rotated to unlock the handle until the roller is disengaged from the positioning structure.

[0039] In the figure: 1. Latch; 2. Handle base; 3. Handle body; 4. Rotating shaft; 5. Slider; 51. Limit fitting portion; 52. Positioning column; 6. Return spring; 7. Limit member; 8. Roller; 9. Positioning structure; 91. Roller entrance; 92. Positioning groove; 93. Arc I; 94. Arc II; 95. Protruding structure; 10. Lock; 11. Storage box; 111. Box body; 112. Box door; 12. Rolling member. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0044] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0045] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "above" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" may include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0047] like Figure 2-11As shown, the present invention provides an anti-collision door handle, comprising a door latch 1, a handle base 2 and a handle body 3;

[0048] The handle body 3 is rotatably mounted on the handle base 2 via a rotating shaft 4; the handle body 3 includes a handle grip;

[0049] A slider 5 is provided between the handle body 3 and the handle base 2 , and the slider 5 is slidably mounted on the handle base 2 via a return spring 6 ;

[0050] The slider 5 includes a limit fitting portion 51. The inner side of the handle body 3 is provided with a limit member 7 that can engage with the limit fitting portion 51. The engagement between the limit fitting portion 51 and the limit member 7 limits the rotation of the handle body 3. The sliding of the slider 5 releases the engagement between the limit fitting portion 51 and the limit member 7, thereby releasing the restriction on the rotation of the handle body 3.

[0051] The door handle further includes a roller 8 and a positioning structure 9 that can engage with each other; the roller 8 and the positioning structure 9 are respectively provided on the door latch 1 and the handle body 3, or respectively provided on the handle body 3 and the door latch 1; the positioning structure 9 includes a roller entrance 91, and when the limiting matching portion 51 is engaged with the limiting member 7, the roller 8 and the roller entrance 91 are positioned correspondingly;

[0052] In the door handle provided by the present invention, when the slider 5 slides without being subjected to force, the engagement between the position-limiting fitting portion 51 and the position-limiting member 7 ensures that the handle body 3 does not rotate freely. At the same time, when the handle body 3 is restricted from rotating, the roller 8 is not damaged by impact from other parts of the handle body 3 because the position of the roller 8 corresponds to the position of the roller inlet 91.

[0053] When the slider 5 is forced to slide and release the engagement between the limiting fitting portion 51 and the limiting member 7 , the handle body 3 can be rotated to lock it to the door latch 1 , completing the door locking process.

[0054] Furthermore, one end of the return spring 6 is installed on the slider 5, and the other end is installed on the handle base 2; a positioning column 52 is provided inside the slider 5, and the return spring 6 is sleeved on the positioning column 52; the slider 5 slides under force to release the engagement of the limiting fitting portion 51 with the limiting member 7, and the handle body 3 is rotatable. When the force on the slider 5 is released, the return spring 6 provided can help the slider 5 to automatically reset, restore the limiting fitting portion 51 to release the engagement with the limiting member 7, and install the door handle on the preservation box. When the preservation box is difficult to open due to the low temperature and negative pressure inside, the slider 5 provided with the return spring 6 provided by the present invention can also provide a certain amount of assistance when opening the door.

[0055] Furthermore, the front portion of the slider 5 exceeds the handle base 2 . When the door handle of the present invention is installed on a storage box, the front portion of the slider 5 will slide depending on whether it contacts the box body 111 when the door is opened or closed.

[0056] Furthermore, when the front portion of the slider 5 is not subjected to force, the position-limiting fitting portion 51 is engaged with the position-limiting member 7 .

[0057] Furthermore, when the front of the slider 5 is subjected to force, the slider 5 slides, and at the same time the return spring 6 is compressed, and the limit fitting portion 51 is released from the engagement with the limit member 7; when the force applied to the front of the slider 5 is gradually released, the return spring 6 extends and drives the slider 5 to slide and reset, and the limit fitting portion 51 engages with the limit member 7.

[0058] Furthermore, the limiting fitting portion 51 is wedge-shaped, and the limiting member 7 is provided with a limiting groove that matches the shape of the limiting fitting portion 51 , so that the limiting fitting portion 51 and the limiting member 7 can be better engaged.

[0059] Furthermore, the positioning structure 9 further includes a positioning groove 92. When the engagement between the limiting fitting portion 51 and the limiting member 7 is released:

[0060] The roller 8 can slide from the roller entrance 91 into the positioning groove 92 by the rotation of the handle body 3 to engage with the positioning structure 9, thereby locking the handle body 3 to the door latch 1;

[0061] Alternatively, the handle body 3 may be rotated in the opposite direction to slide out of the positioning groove 92 and release the engagement with the positioning structure 9 , thereby releasing the locking between the handle body 3 and the door latch 1 .

[0062] Furthermore, a rolling element 12 is provided between the inner side surface of the handle body 3 and the handle base 2. When the handle body 3 rotates, the rolling element 12 can cause rolling friction between the handle body 3 and the handle base 2, thereby making the rotation easier.

[0063] Furthermore, a lock 10 is provided on the handle body 3 . When the handle body 3 is locked with the door latch 1 , the lock 10 is used to prevent the handle body 3 from rotating.

[0064] like Figure 1 As shown, the present invention also provides a storage box 11, including a box body 111 provided with an opening and a box door 112 for closing the opening, and also includes the above-mentioned anti-collision door handle, the door latch 1 is fixedly installed on the side of the box body 111, and the handle base 2 is fixedly installed on the side of the box door 112.

[0065] Furthermore, the front portion of the slider 5 faces the box body 111 and extends beyond the box door 112 .

[0066] When the storage box 11 provided by the present invention is closed, the slider 5 will slide due to contact with the box body 111, thereby releasing the restriction on the rotation of the handle body 3, and the handle body 3 can be locked to the door latch 1 by rotating it;

[0067] When the door needs to be opened, the handle body 3 is rotated in the opposite direction to release the lock between it and the door latch 1, and the handle of the handle body 3 is pulled outward to open the door. At the same time, under the action of the reset spring 6, the slider 5 can slide to restore the restriction on the rotation of the handle body 3, preventing the door handle from rotating at will when the door is open, and also preventing the handle body 3 from damaging the door latch 1.

[0068] Example 1

[0069] like Figure 3-6 As shown, in the door handle provided in this embodiment, the roller 8 and the positioning structure 9 are respectively provided on the door latch 1 and the handle body 3;

[0070] The positioning structure 9 is a double arc structure including an arc I 93 and an arc II 94;

[0071] The roller inlet 91 is located on the side of the double arc structure; the arc I 93 is located at the bottom of the double arc structure; the arc II 94 is the positioning groove 92, located at the top of the double arc structure; the arc I 93 and the arc II 94 are connected by an arc segment transition;

[0072] When the engagement between the limiting fitting portion 51 and the limiting member 7 is released:

[0073] As the handle body 3 rotates, the roller 8 enters the double-arc structure from the roller entrance 91 and fits the surface of the double-arc structure, sliding from the arc I 93 into the arc II 94 to engage with the positioning structure 9, thereby locking the handle body 3 to the door latch 1;

[0074] As the handle body 3 rotates in the opposite direction, the roller 8 can slide out of the arc II 94 and slide to the roller entrance 91 in contact with the surface of the double arc structure, releasing the engagement with the positioning structure 9, thereby releasing the lock between the handle body 3 and the door latch 1.

[0075] Furthermore, the arc segment between the arc I 93 and the arc II 94 is a raised structure 95. When the low temperature causes negative pressure inside the storage box 11, making it difficult to open the door, the roller 8 slides to the raised structure 95, which can provide assistance for opening the box door 112 through the lever principle.

[0076] Furthermore, the door latch 1 is also provided with the rolling member 12, which can provide rolling friction during the process of locking or unlocking the handle body 3 and the door latch 1, making the rotation easier.

[0077] like Figure 2 The figure shows a schematic diagram of the storage box structure with the door handle described in this embodiment installed, a sealing strip is installed between the box door 112 and the box body 111, and when the door is just closed, the box door 112 squeezes the sealing strip, and the force point of the roller 8 in the positioning groove 92 of the double arc structure is on the left surface of the positioning groove 92, and when the box door 112 is closed, the negative pressure formed in the box due to the low temperature will cause the box door 112 to continue to be compressed and moved toward the box body 111, and at this time, the force point of the roller 8 on the door latch 1 is transferred to the right surface of the positioning groove 92, and the negative pressure will make it difficult to open the door. When the handle body 3 is rotated to open the door, when the roller is in contact with the surface of the double arc structure and rotates to the raised structure 95, under the principle of leverage, the raised structure 95 will provide thrust to the roller 8, thereby providing assistance for opening the door, making it easier to open the door.

[0078] Example 2

[0079] like Figure 9-11 As shown, the difference between this embodiment and embodiment 1 is that the roller 8 and the positioning structure 9 are respectively provided on the handle body 3 and the door latch 1;

[0080] The positioning structure 9 is an arc-shaped structure, the roller inlet 91 is located at the top of the arc-shaped structure, and the positioning groove 92 is located at the bottom of the arc-shaped structure;

[0081] When the engagement between the limiting fitting portion 51 and the limiting member 7 is released:

[0082] As the handle body 3 rotates, the roller 8 starts from the roller entrance 91 and slides into the positioning groove 92 in accordance with the surface of the arc structure to engage with the positioning structure 9, thereby locking the handle body 3 to the door latch 1;

[0083] As the handle body 3 rotates in the opposite direction, the roller 8 can slide out of the positioning groove 92 and slide to the roller entrance 91 in contact with the double arc structure surface, releasing the engagement with the positioning structure 9, thereby releasing the lock between the handle body 3 and the door latch 1.

[0084] like Figure 8 Shown is a schematic diagram of the structure of a storage box equipped with the door handle described in this embodiment.

[0085] The anti-collision power-assisted door handle and storage box provided by the present invention cooperate and lock with each other through the provided slider and the limit piece provided on the handle body, ensuring that the rotation of the handle body is restricted when the door is open, ensuring that the roller entrance of the positioning structure corresponds to the roller position, thereby preventing the handle body from directly colliding with the roller or the positioning structure and causing damage to the door handle. When closing the door, the slider hits the door latch and slides, thereby releasing the engagement with the limit piece, allowing the handle body to rotate, and then the positioning structure and the roller can be locked, completing the door locking operation; at the same time, the design of the positioning structure can make it more convenient to engage with the roller.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-collision door handle, characterized in that: including a door latch, a handle base and a handle body; The handle body is rotatably mounted on the handle base via a rotating shaft; A slider is provided between the handle body and the handle base, and the slider is slidably mounted on the handle base via a return spring; The slider includes a limit fitting portion, and the inner side surface of the handle body is provided with a limit piece that can engage with the limit fitting portion. The rotation of the handle body is restricted by the engagement between the limit fitting portion and the limit piece. The engagement between the limit fitting portion and the limit piece is released by sliding the slider, thereby releasing the restriction on the rotation of the handle body. The door handle further includes a roller and a positioning structure that can engage with each other; the roller and the positioning structure are respectively provided on the door latch and the handle body, or respectively provided on the handle body and the door latch; the positioning structure includes a roller entrance, and when the limiting matching portion is engaged with the limiting member, the roller corresponds to the position of the roller entrance; The front portion of the slider extends beyond the handle base; when the storage box is closed, the slider will slide due to contact with the box body, thereby releasing the restriction on the rotation of the handle body; When the front portion of the slider is subjected to force, the slider slides, and at the same time the return spring is compressed, and the limit fitting portion is released from the engagement with the limit member; when the force applied to the front portion of the slider is gradually released, the return spring extends, driving the slider to slide and return to its original position, and the limit fitting portion is engaged with the limit member; The positioning structure also includes a positioning groove. When the engagement between the limiting fitting portion and the limiting member is released: the roller can slide into the positioning groove from the roller entrance through the rotation of the handle body to achieve engagement with the positioning structure, thereby locking the handle body to the door latch; or the roller slides out of the positioning groove through the reverse rotation of the handle body to release the engagement with the positioning structure, thereby releasing the lock between the handle body and the door latch.

2. The anti-collision door handle according to claim 1, characterized in that: When the front portion of the slider is not subjected to force, the position-limiting matching portion is engaged with the position-limiting member.

3. The anti-collision door handle according to claim 1, characterized in that: The limiting fitting portion is wedge-shaped, and the limiting member is provided with a limiting groove matching the shape of the limiting fitting portion.

4. The anti-collision door handle according to claim 1, characterized in that: The roller and the positioning structure are respectively provided on the door latch and the handle body; The positioning structure is a double arc structure including arc I and arc II; The roller inlet is located on the side of the double arc structure; The arc I is located at the bottom of the double arc structure; The arc II is the positioning groove, located at the top of the double arc structure; The arc I and the arc II are connected by an arc segment transition.

5. The anti-collision door handle according to claim 1, characterized in that: The roller and the positioning structure are respectively provided on the handle body and the door latch; The positioning structure is an arc-shaped structure, the roller inlet is located at the top of the arc-shaped structure, and the positioning groove is located at the bottom of the arc-shaped structure.

6. The anti-collision door handle according to claim 1, characterized in that: A rolling element is provided between the inner side surface of the handle body and the handle base. When the handle body rotates, the rolling element can cause rolling friction between the handle body and the handle base, thereby making the rotation easier.

7. A storage box, comprising a box body with an opening and a door for closing the opening, characterized in that: It also includes the anti-collision door handle according to any one of claims 1 to 6, wherein the door latch is fixedly installed on the side of the box body, and the handle base is fixedly installed on the side of the box door.

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