Easy entry shoe with spring-loaded rear

Abstract

A shoe comprising a sole and an upper, the upper comprising a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion and a front portion, the rear portion comprising a top portion reinforced by a solid material, an optional bottom portion reinforced by a solid material, a central portion made of a flexible material located between the top portion and the bottom portion, and a spring element. The top portion of the spring element is attached to the top portion of the rear portion, and the bottom portion of the spring element is attached to the bottom portion of the rear portion or to the sole.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This is a utility model application filed in the United States as a nonprovisional patent application pursuant to 35 U.S.C. §100 et seq. and 37 C.F.R. §1.53(b), and claims the benefit of the prior filing date of U.S. provisional patent application serial number 63 / 233,451, filed on August 16, 2021, pursuant to 35 U.S.C. §119(e), the entire contents of which are incorporated herein by reference. Technical Field

[0003] The field of the present disclosure and related embodiments relates to the field of footwear, and more particularly, but not exclusively, to footwear such as shoes that enable easy entry of a foot into the shoe. Background Art

[0004] A significant number of users have difficulty bending over to help put on shoes with a closed heel design. However, most shoes require bending over to tie or untie the shoe laces when putting on and taking off the shoe, or to help adjust the back of the shoe to step into the shoe. Therefore, there is a generally recognized need for a shoe that allows the user to put on and take off the shoe without bending over and using the user's hands.

[0005] As disclosed in U.S. Patents US1686175, US9675132, US9820527, US9877542, US10306947, US10506842, US10555578, US10638810, US10653209, US10660401, US10813405, US10842222, US10905192, US10973279 and PCT application WO2012077899, many such easy-entry shoes are disclosed. These solutions involve compressing the rear side of the shoe so that the foot can enter the shoe, and a spring element that returns the compressed rear side to an upright position. However, due to the rigid structure around the heel, these structures are expensive to manufacture and uncomfortable to wear. Therefore, a shoe with a simpler structure, easier production and lower cost is needed. Summary of the invention

[0006] According to an exemplary embodiment, a wearable article such as a shoe is provided, which includes a sole and an upper, the upper including a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion, and a front portion, the rear portion including a top portion reinforced by a solid material, a bottom portion reinforced by a solid material, a central portion located between the top portion and the bottom portion and made of a flexible material, and a spring element. The top of the spring element is attached to the top portion of the rear portion, and the bottom of the spring element is attached to the bottom portion of the rear portion.

[0007] According to another exemplary embodiment, a wearable article such as a shoe is provided, which includes a shoe, the shoe including a sole and an upper, the upper including a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion, and a front portion, the rear portion including a top portion reinforced by a solid material, a flexible material between the top portion and the sole, and a compression spring element. The top portion of the compression spring element is attached to the top portion of the rear portion, and the bottom portion of the compression spring element is attached to the sole.

[0008] According to another exemplary embodiment, an article of wear, such as a shoe, is provided wherein the spring element is comprised of a circular compression spring.

[0009] According to another exemplary embodiment, an article of wear, such as a shoe, is provided wherein the spring element is comprised of a snap compression spring.

[0010] Furthermore, according to another exemplary embodiment, there is provided an article of wear such as a shoe, wherein the spring element is constituted by a sinusoidal compression spring.

[0011] Furthermore, according to another exemplary embodiment, there is provided a wearing article such as a shoe, wherein at least one of a medial side portion and a lateral side portion of the shoe includes an elastic element.

[0012] Furthermore, according to another exemplary embodiment, there is provided a wearing article such as a shoe, wherein a spring element is vertically installed at a horizontal middle of a rear portion of the shoe.

[0013] Furthermore, according to another exemplary embodiment, a wearing article such as a shoe is provided, wherein the spring element is bent vertically, upwardly and forwardly according to a vertical curvature of a rear portion of the shoe; and / or is bent horizontally according to a horizontal curvature of a rear portion of the shoe.

[0014] In addition, according to another exemplary embodiment, a method for entering a shoe is provided, the method comprising the following steps: providing a shoe comprising a sole and an upper, the upper comprising a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion, and a front portion, wherein the rear portion of the shoe comprises a top portion reinforced by a solid material, a bottom portion reinforced by a solid material, a central portion located between the top portion and the bottom portion and made of a flexible material, and a compression spring element. Wherein, the top of the compression spring element is attached to the top portion of the rear portion, and the bottom of the compression spring element is attached to the bottom portion of the rear portion. When a foot enters the shoe, a downward force is applied to the top portion of the rear portion to push the top portion of the rear portion downward and create enough space for the foot to enter the shoe. And releasing the downward force on the top portion of the rear portion causes the compression spring element to push the top portion of the rear portion upward to secure the foot in the shoe.

[0015] According to another exemplary embodiment, a method for entering a shoe is provided, the method comprising the following steps: providing a shoe comprising a sole and an upper, the upper comprising a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion, and a front portion, wherein the rear portion of the shoe comprises a top portion reinforced by a solid material, a portion of the rear portion located between the top portion and the sole and made of a flexible material, and a compression spring element. Wherein, the top of the compression spring element is attached to the top portion of the rear portion, and the bottom of the compression spring element is attached to the sole of the shoe. When a foot enters the shoe, a downward force is applied to the top portion of the rear portion to push the top portion of the rear portion downward and create enough space for the foot to enter the shoe. And releasing the downward force on the top portion of the rear portion causes the compression spring element to push the top portion of the rear portion upward to secure the foot in the shoe.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the relevant art are generally understood. The materials, methods and examples provided herein are illustrative only and are not intended to be limiting. Except for the necessary or inherent scope of the process itself, the steps or stages of the methods and processes described in this disclosure (including the accompanying drawings) do not have a specific order that is expected or implied. In many cases, the order of the process steps can be changed without changing the purpose or effect of the method.

[0017] The implementation of the method and system of the embodiments disclosed below involves performing or completing certain selected tasks or steps manually, automatically, or in any combination thereof. In addition, according to the actual instruments and equipment of the preferred embodiments of the method and system proposed herein, multiple selected steps can be implemented by hardware or software on any operating system of any firmware or in any combination thereof. For example, as hardware, the selected steps can be implemented as a chip or circuit. As software, the selected steps can be implemented as multiple software instructions executed by a computer using any suitable operating system. In any case, the selected steps of the method and system disclosed herein can be described as being executed by a data processor such as a computing platform for executing multiple instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various embodiments will be described herein by way of example only with reference to the accompanying drawings. With specific reference now to the drawings in detail, it should be emphasized that the details shown are by way of example only and are intended only for illustrative discussion of the preferred embodiments, and are presented in order to provide what is believed to be the most useful and understandable description of the principles and conceptual aspects of the embodiments. In this regard, no attempt is made to show the structural details of the embodiments in more detail than is necessary for a basic understanding of the subject matter, the description in conjunction with the drawings making it apparent to those skilled in the art how the several forms and structures may be implemented in practice.

[0019] In the attached picture:

[0020] Figure 1 is a simplified diagram of a side view of an easy-entry footwear having a rear spring;

[0021] Figure 2A is a simplified illustration of a rear view of the interior of a rear portion of an easy-entry footwear having a circular rear spring;

[0022] Figure 2B is a simplified illustration of a rear view of the interior of the rear portion of an easy-entry footwear having a clamping rear spring;

[0023] Figure 3A is a simplified illustration of a rear view of the interior of a rear portion of an easy-entry footwear having an open circular rear spring in an uncompressed mode, the two edges of the rear spring not being connected to each other;

[0024] Figure 3B is a simplified illustration of a rear view of the interior of the rear of an easy-entry footwear having an open circular rear spring in a compressed mode, the two edges of the rear spring not being connected to each other;

[0025] Figure 4A is a simplified illustration of a rear view of the interior of a rear portion of an easy-entry footwear having a sinusoidal compression spring in an uncompressed mode;

[0026] Figure 4B is a simplified illustration of a rear view of the interior of a rear portion of an easy-entry footwear having a sinusoidal compression spring in a compression mode;

[0027] Figure 5A is a simplified illustration of a side view of an easy-entry footwear with a rear portion in an uncompressed position and an elastic element in an unstretched position; and

[0028] Figure 5B is a simplified illustration of a side view of an easy-entry footwear with a rear portion in a compressed position and an elastic element in a stretched position. DETAILED DESCRIPTION

[0029] The principles and structures of some embodiments of footwear, such as lace-up shoes or slip-on shoes, that provide easy entry for a user's foot may be better understood with reference to the drawings and accompanying description.

[0030] Before explaining at least one embodiment in detail, it should be understood that the application of these embodiments is not limited to the structural details and component arrangements set forth in the following description or shown in the accompanying drawings. Other embodiments can be practiced or implemented in various ways. In addition, it should be understood that the words and terms used herein are for illustrative purposes and should not be considered as limiting.

[0031] In this document, drawing elements that are not described within the scope of a drawing and are labeled with reference numerals described in a previous drawing have the same purpose and description as the previous drawing. Similarly, elements identified in the text by reference numerals that do not appear in the drawings described in the text have the same purpose and description as the previous drawing in which the element was described.

[0032] The drawings in this document may not be drawn to any scale. Different scales may be used in different drawings or even in the same drawing, for example, different views of the same object may use different scales or two adjacent objects may use different scales.

[0033] As used herein, the term articles "a" or "an" are defined as one or more than one. As used herein, the term "plurality" is defined as two or more. As used herein, the term "another" is defined as at least a second or more. As used herein, the terms "including and / or having" are defined as comprising.

[0034] As used herein, the term "coupled" is defined as connected, although not necessarily directly, and not necessarily mechanically.

[0035] The term "flexible" or "elastic" may refer to a material of a part of a shoe that can be stretched and / or compressed and / or folded by the application of a force, and can assume an original shape when the force is removed (elasticity), and can be forced to return to the original shape. The term "strong" or "rigid" may refer to a material of a part of a shoe that is not "flexible" or "elastic" and can therefore retain its shape under the action of forces that stretch and / or compress the "flexible" or "elastic" material or part of the shoe.

[0036] Reference now Figure 1 , Figure 1 is a simplified illustration of a side view of an easy-entry footwear 10 having a rear spring 11 according to one embodiment.

[0037] Figure 1 The footwear or shoe 10 is suitable for the right foot of a human user ( Figure 1 The left shoe for the left foot of a human user may be similar to Figure 1 10. Footwear or shoes.

[0038] The footwear or shoe 10 may include a sole 12 and an upper 13. The upper 13 may have a shoe opening 14 for receiving a user's foot to enter the shoe 10. The shoe opening 14 may be defined by a rear portion 15, a medial portion 16, a lateral portion 17, and a front portion 18. The footwear or shoe 10 may also include a tongue portion 19 and a lacing system 20. Various types of tongue portions 19, lacing systems 20, and other closure systems are contemplated, including but not limited to closed shoes with elastic or stretchable materials, VELCRO or hook-and-loop type connectors, zippers, snaps, buckles, and other types of closure systems.

[0039] The rear portion 15 may include a top portion 21, a bottom portion 22, and a center portion 23 located between the top portion 21 and the bottom portion 22. The top portion 21 and the bottom portion 22 may be made of a strong and / or rigid material that does not bend forward under the force applied by the foot when the foot enters the shoe 10 and presses down on the top portion 21. The center portion 23 may be made of an elastic and / or flexible material that may be compressed under the force applied by the foot when the foot enters the shoe 10.

[0040] Reference now Figure 2A and Figure 2B , Figure 2A is a simplified diagram of a rear view of the interior of the rear portion 15 with a circular spring 24 according to one embodiment, Figure 2B is a simplified illustration of a rear view of the interior of the rear portion 15 with a garter spring 25 according to one embodiment.

[0041] As an option, the details can be viewed in the context of the previous figures. Figure 2A and Figure 2B However, it can of course also be viewed in the context of any desired environment Figure 2A and Figure 2B In addition, the above definition can also be applied to the following description.

[0042] According to one embodiment, the rear spring 11 may be a compression spring installed between the top portion 21 and the bottom portion 22. Alternatively, the rear spring 11 or compression spring 11 may be installed between the top portion 21 and the sole 12. One end of the rear spring 11 may be connected to the top portion 21, and the other end may be connected to the bottom portion 22. The rear spring 11 may be installed above (on the outside of) the central portion 23, or installed inside the central portion 23. The rear spring 11 or compression spring 11 may be a single spring element of any shape and form, and may be made to conform to the shape of the rear portion 15 of the shoe 10. The rear spring 11 or compression spring 11 may be installed at approximately the horizontal middle of the rear portion 15 at the very rear end of the shoe 10. The rear spring 11 or compression spring 11 may be the only spring element connected between the top portion 21 and the bottom portion 22 or the sole 12.

[0043] When a foot enters shoe 10 and presses downward on top portion 21 , top portion 21 may move downward relative to or toward bottom portion 22 , thereby compressing rear spring 11 .

[0044] When the foot is fully entered and rests in the shoe 10, the foot no longer applies downward force to the top portion 21. Thus, the rear spring 11 is allowed to push the top portion 21 back to its original position.

[0045] It should be understood that the location of the rear spring 11 and the shape of the rear spring 11 are adapted to have minimal effect on the flexibility of the opening 14. Therefore, the location of the rear spring 11 and the shape of the rear spring 11 allow the opening 14 to be adapted to the shape of a particular foot when the foot resides in the shoe 10. In this regard, the opening 14 may refer to the upper edge of the rear portion 15, the medial portion 16, the lateral portion 17, and the front portion.

[0046] like Figure 2A As shown, the circular spring 24 as the rear spring 11 is in the shape of a ring, however, other forms of springs 11 can also be considered, such as horizontal or vertical elliptical, egg-shaped or oval springs. Figure 2B A shoe 10 is shown having a rear spring 11 in the form of a circular garter spring 25. The garter spring 25 may comprise a helical spring made of carbon steel, stainless steel or any other material with its two ends connected to form a circular shape.

[0047] like Figure 2A and Figure 2B As shown, the circular spring 24 and / or the catching spring 25 can be connected to the top part 21 via its top 26 and to the bottom part 22 via its bottom 27. Alternatively, the circular spring 24 can be connected to the top part 21 via its top 26 and to the sole 12 via its bottom 27.

[0048] Reference now Figure 3A and Figure 3B , Figure 3A and Figure 3B is a simplified illustration of a rear view of the interior of the rear portion 15 of the shoe 10 having a circular spring 28 with the two edges of the circular spring 28 not connected, according to one embodiment. Figure 3A The rear portion 15 and spring 28 are depicted in an uncompressed mode, while Figure 3B The rear portion 15 and spring 28 are depicted in a compressed mode.

[0049] As an option, the details can be viewed in the context of the previous figures. Figure 3A and Figure 3B However, it can of course also be viewed in the context of any desired environment Figure 3A and Figure 3B In addition, the above definition can also be applied to the following description.

[0050] like Figure 3A and Figure 3B As shown, spring 28 is another example of rear spring 11 and / or circular spring 24, which is partially circular in shape, wherein the two edges of spring 28 are not connected. Spring 28 can be connected to top portion 21 via its top 26 and to bottom portion 22 via its bottom 27. Alternatively, spring 28 can be connected to top portion 21 via spring top 26 and to sole 12 via its bottom 27.

[0051] like Figure 3B As shown, the top edge 29 of the rear portion 15 is lower than Figure 3A The top edge 29 of the mid-rear portion 15, when the top portion 21 is pressed down, provides more space for the foot to enter the shoe from the rear side of the shoe.

[0052] Reference now Figure 4A and Figure 4B , Figure 4A and Figure 4B is a simplified illustration of a rear view of the interior of the rear portion 15 of the shoe 10 having a sinusoidal compression spring 30 according to one embodiment. Figure 4A The rear portion 15 and / or the sinusoidal compression spring 30 are depicted in an uncompressed mode, while Figure 4B The rear portion 15 and / or the sinusoidal compression spring 30 are depicted in a compression mode.

[0053] As an option, the details can be viewed in the context of the previous figures. Figure 4A and Figure 4B However, it can of course also be viewed in the context of any desired environment Figure 4A and Figure 4B In addition, the above definition can also be applied to the following description.

[0054] like Figure 4A and Figure 4B As shown, the sinusoidal compression spring 30 is a rear spring 11 shaped as having a repeating pattern of acute angles and / or sharp curves. Any alternative repeating pattern, such as a sinusoidal pattern, whether periodic or non-periodic, is also contemplated. Figure 4A and Figure 4B As shown, the sinusoidal compression spring 30 can be installed to be vertically contracted, and can be formed into a transversely flat form, and can be installed in a sleeve ( Figure 4A and Figure 4B ) and / or embedded in the rear part 15.

[0055] like Figure 4A and Figure 4B As shown, the sinusoidal compression spring 30 can be attached to the top portion 21 in region 26 and to the bottom portion 22 in region 27. The spring 30 can be attached to the rear portion 15 above (outside of) the central portion 23 or within the central portion 23. Alternatively, the sinusoidal compression spring 30 can be attached to the top portion 21 in region 26 and to the sole 12 in region 27 ( Figure 4A and Figure 4B not shown).

[0056] Reference now Figure 5A and Figure 5B , Figure 5A is a simplified illustration of a side view of a shoe 10 with a rear portion 15 in an uncompressed position and an elastic element 31 in an unstretched position according to one embodiment, Figure 5B is a simplified illustration of a side view of the shoe 10 with the rear portion 15 in a compressed position and the elastic element 31 in a stretched position.

[0057] As an option, the details can be viewed in the context of the previous figures. Figure 5A and Figure 5B However, it can of course also be viewed in the context of any desired environment Figure 5A and Figure 5B In addition, the above definition can also be applied to the following description.

[0058] like Figure 5A As shown, at least a portion of the shoe opening 14 (e.g., the elastic element 31) can be made of an elastic material, such as a rubber band as a non-limiting example. Figure 5A and Figure 5B1. The resilient element 31 is shown as part of the lateral part 17 in FIG. 2, however, the resilient element 31 may alternatively be mounted as part of the medial part 16, or alternatively, as part of both the medial part 16 and the lateral part 17.

[0059] When the foot enters the shoe, the elastic material of the elastic element 31 stretches, thereby moving the top portion 21 of the rear portion 15 downward, while expanding the shoe opening 14, providing enough space for the foot to pass through the shoe opening. Once the foot enters the shoe, the elastic material can be allowed to contract, thereby fixing the foot in the shoe.

[0060] It should be understood that the rear spring 11 as described above or having any other shape and form can be adapted to the shape of the rear portion 15. In this regard, the rear spring 11 can be bent vertically, upward and forward according to the curvature of the rear portion 15. In this regard, the rear spring 11 can be bent horizontally according to the curvature of the rear portion 15.

[0061] While the described embodiments present only a single rear spring 11 located in the rear portion 15 of the shoe, it should be understood that in some embodiments, multiple spring elements may be located in the rear portion 15 and / or the lateral portion 17 and / or the medial portion 16. Similarly, while some embodiments are described as using a single elastic element 31 in the lateral portion 17 and / or the medial portion 16, it should be understood that multiple elastic elements 31 may be used in the lateral portion 17, the medial portion 16, and / or the rear portion 15. It should also be understood that the elastic element 31 may be embedded in the interior of the lateral portion 17, the medial portion 16, and / or the rear portion 15, and that slits or kerfs in the lateral portion 17, the medial portion 16, and / or the rear portion 15 may be forced open by the foot, but then pulled back together by the force of the elastic element 31. It should also be understood that rather than a separate rear spring 11, the rear portion 15 or a portion of the rear portion 15 itself may be constructed of an elastic material that may be compressed by a force but return to its pre-compressed state upon removal of the force. For example, central portion 23 may be constructed of a material that is compressed under the application of a force and then rebounds to its uncompressed state when the force is removed.

[0062] It is anticipated that various footwear technologies and materials will be developed during the life of this patent, and the scope of the terms herein, particularly the terms "footwear" and "shoe", are intended a priori to include all such new technologies and materials.

[0063] Additional objects, advantages, and novel features of the embodiments described herein will become apparent to those of ordinary skill in the art upon examination of the following examples, which are not intended to be limiting. In addition, each of the various embodiments and aspects of the embodiments as described above and as claimed in the appended claims section will find experimental support in the following examples.

[0064] It should be understood that certain features of the systems and methods described herein, which are described in the context of separate embodiments for clarity, may also be provided in combination in a single embodiment. Conversely, various features described in the context of a single embodiment for brevity may also be provided separately or in any suitable sub-combination.

[0065] Although the system and method have been described in conjunction with specific embodiments thereof, it is apparent that many alternatives, modifications and variations will be apparent to those skilled in the art. Therefore, it is intended to encompass all such alternatives, modifications and variations that fall within the spirit and broad scope of the appended claims. The entire contents of all publications, patents and patent applications referred to in this specification are incorporated herein by reference, and their scope is the same as if each individual publication, patent or patent application was specifically and individually indicated to be incorporated herein by reference. In addition, the citation or identification of any reference in this application should not be construed as an admission that such reference can serve as prior art.

Claims

1. A shoe comprising a sole and an upper, the upper comprising a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion, and a front portion, wherein the shoe comprises a slit having an elastic element proximate to the shoe opening in at least one of the medial portion of the shoe and the lateral portion of the shoe, and the rear portion include: a top portion, which is reinforced with solid material; a bottom portion which is above the sole and reinforced with a solid material; and A compression spring element comprising: a top portion and a bottom portion configured to be compressed toward each other by exerting a force on the top portion, and a side profile that conforms to the shape of the rear portion of the shoe and is shaped in a transversely flattened form, wherein the compression spring is mounted in a sleeve or embedded in the rear portion, wherein the compression spring is centered between the left and right sides of the rear portion, wherein the top of the compression spring element is attached to the top portion of the rear portion, and the bottom of the compression spring element is attached to the bottom portion of the rear portion.

2. The shoe according to claim 1, in, The compression spring element is composed of at least one of the following: Circular compression springs; and Sinusoidal compression spring.

3. The shoe according to claim 1, in, The compression spring element is formed by a clamping compression spring.

4. The shoe according to claim 1, in, The compression spring element is at least one of the following: Curving vertically, upwardly and forwardly according to the vertical curvature of the rear portion; and Curved horizontally according to the horizontal curvature of the rear portion.

5. A method of entering a shoe, wherein The following steps are involved: A shoe is provided comprising a sole and an upper, the upper comprising a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion, and a front portion, wherein the shoe comprises a slit proximate to the shoe opening having an elastic element in at least one of the medial portion of the shoe and the lateral portion of the shoe, and the rear portion comprises: The top part is reinforced with solid material. a bottom portion above the sole and reinforced with a strong material, and A compression spring element comprising: a top portion and a bottom portion configured to be compressed toward each other by exerting a force on the top portion, and a side profile that conforms to the shape of the rear portion of the shoe and is shaped in a transversely flattened form, wherein the compression spring is mounted in a sleeve or embedded in the rear portion, wherein the compression spring is centered between the left and right sides of the rear portion, wherein the top portion of the compression spring is attached to the top portion of the rear portion, and the bottom portion of the compression spring element is attached to the bottom portion of the rear portion; When a foot enters the shoe, a downward force is applied to the top portion of the rear portion to push the top portion of the rear portion downward, and at the same time the elastic element stretches, allowing the shoe opening to expand and create sufficient space for the foot to enter the shoe; and Releasing the downward force on the top portion of the rear portion causes the compression spring element to push the top portion of the rear portion upward and the elastic element to contract to secure the foot in the shoe.

6. A method of entering a shoe, wherein The following steps are involved: A shoe is provided comprising a sole and an upper, the upper comprising a shoe opening for entering the shoe, the shoe opening being defined by a rear portion, a medial portion, a lateral portion, and a front portion, wherein the shoe comprises a slit proximate to the shoe opening having an elastic element in at least one of the medial portion of the shoe and the lateral portion of the shoe, and the rear portion comprises: The top part is reinforced with solid material. at the bottom portion above the sole, A compression spring element comprising: a top portion and a bottom portion configured to be compressed by exerting a force on the top portion, and a side profile that conforms to the shape of the rear portion of the shoe and is shaped in a transversely flattened form, wherein the compression spring is mounted in a sleeve or embedded in the rear portion, wherein the compression spring is centered between a left side and a right side of the rear portion, wherein the top portion of the compression spring element is attached to the top portion of the rear portion and the bottom portion of the compression spring element is attached to the sole of the shoe; When a foot enters the shoe, a downward force is applied to the top portion of the rear portion to push the top portion of the rear portion downward, and at the same time the elastic element stretches, allowing the shoe opening to expand to create sufficient space for the foot to enter the shoe; and Releasing the downward force on the top portion of the rear portion causes the compression spring element to push the top portion of the rear portion upward and the elastic element to contract to secure the foot in the shoe.

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