TWI530244B - Waterproof case without screwing structure - Google Patents

Description

Non-spiral waterproof housing

The present invention relates to a waterproof housing, and more particularly to a non-spiral waterproof housing for mounting a smart phone with a fingerprint recognition button.

With the advancement of technology, electronic devices with shooting functions have become more and more popular, such as mobile phones, cameras, and video cameras. Through these electronic devices, people can take pictures of people and beautiful scenery. Some smart phones are advertised as waterproof, but their waterproof effect is extremely limited. If the smart phone is actually operated in the water, it is easy to cause water intrusion and cause damage. Moreover, in order to avoid damage to the water in the smart phone, the smart phone is generally placed in the waterproof case, thereby achieving the waterproof protection effect through the waterproof case.

However, the conventional waterproof case often achieves the effect of fixing and waterproofing by means of locking, which is cumbersome for the user to install, and the volume of the waterproof case is too large. In addition, the waterproof case needs to be improved along with the advancement of the smart phone, so that the new functions of the smart phone (such as fingerprint recognition function) are not hindered by the waterproof case and are difficult to use.

Therefore, the present inventors have felt that the above-mentioned deficiencies can be improved, and they have devoted themselves to research and cooperated with the application of the theory, and finally proposed a present invention which is reasonable in design and effective in improving the above-mentioned defects.

An embodiment of the present invention provides a non-spiral waterproof housing that can effectively improve the problems caused by conventional waterproof housings.

An embodiment of the present invention provides a non-spiral waterproof housing for installing a smart phone with a fingerprint recognition button. The non-spiral waterproof housing includes: a top waterproof module, including: a top case The body has a top plate and a top side plate extending substantially perpendicularly from the periphery of the top plate. The top plate is formed with a touch operation window and a fingerprint pressing hole. The inner surface of the top plate is formed with a stopping portion. a stop portion is adjacent to the top side plate, and an annular groove is defined between the stop portion and the top side plate, and the top case is formed with a top buckle portion on the inner surface of the top side plate; a transparent plate Fixed on the inner surface of the top plate of the top case and located inside the blocking portion, the transparent plate completely covers the touch operation window and does not cover the fingerprint pressing hole; and an elastic film whose periphery is fixed to the inner surface of the top plate Between the transparent plate and the elastic film covering the fingerprint pressing hole; wherein, when the smart phone is installed in the non-spiral waterproof casing, the elastic film portion corresponding to the fingerprint pressing hole Compressed and deformed in a direction away from the fingerprint pressing hole to abut the fingerprint identification button and can prevent the fingerprint recognition function of the fingerprint recognition button; a waterproof gasket disposed in the annular groove a bottom portion of the waterproof gasket protrudes from the annular groove; and a bottom waterproof module detachably fastened to the top waterproof module, the bottom waterproof module comprising: a bottom case a bottom plate and a bottom side plate extending substantially perpendicularly from a periphery of the bottom plate; wherein an end surface of the bottom side plate away from the bottom plate is defined as a pressing surface, and the bottom case forms a bottom on an outer surface of the bottom side plate a fastening portion, wherein the top waterproof module and the bottom waterproof module are detachably fastened to each other by the cooperation of the top fastening portion and the bottom fastening portion, so that the waterproof gasket is received by the bottom casing The pressing surface is pressed and deformed by the groove bottom of the annular groove to deform, so that the pressing surface of the bottom case and the groove bottom of the annular groove are respectively formed in contact with the waterproof gasket.

In summary, the non-thread-locking waterproof casing provided by the embodiment of the present invention has a top casing and a bottom casing assembled by mutual cooperation of the top buckle portion and the bottom buckle portion, thereby further forming the top casing. The waterproof gasket is pressed together with the bottom case to achieve a waterproof effect. Accordingly, the non-spiral waterproof housing is not fixed by means of a screw lock, thereby effectively The ground lifts the convenience of the non-spiral waterproof housing and reduces the overall volume.

Furthermore, the non-spiral waterproof housing is provided with an elastically deformable elastic film when the smart phone is installed therein, so that the non-spiral waterproof housing can prevent the fingerprint recognition function of the smart phone. use.

The detailed description of the present invention and the accompanying drawings are to be understood by the claims The scope is subject to any restrictions.

100‧‧‧Non-lock-type waterproof enclosure

1‧‧‧Top waterproof module

11‧‧‧Top housing

111‧‧‧ top board

1111‧‧‧ accommodating slots

1112‧‧‧Installation slot

1113‧‧‧Touch operation window

1114‧‧‧ Fingerprint pressing hole

1115‧‧‧stops

112‧‧‧ top side panels

1121‧‧‧Limited

1122‧‧‧Top buckle (eg ribs)

1123‧‧‧ gap

113‧‧‧ring groove

12‧‧‧Transparent board

121‧‧‧ Main body

122‧‧‧Extension

1221‧‧‧ round hole

13‧‧‧elastic film

2‧‧‧Waterproof gasket

3‧‧‧ bottom waterproof module

31‧‧‧Bottom shell

311‧‧‧floor

312‧‧‧ bottom side panel

312a‧‧‧ inner board

312b‧‧‧ functional block

3121‧‧‧ Pressing surface

3122‧‧‧ bottom buckle (eg recessed hole)

3123‧‧‧Keyhole

3124‧‧‧Connector hole

3125‧‧‧ sound hole

32‧‧‧Waterproof components

321‧‧‧Waterproof soft key

322‧‧‧Waterproof soft plug

3221‧‧‧Combination Department

3222‧‧‧ Closed Department

323‧‧‧Waterproof breathable membrane

1 is a perspective view of a non-spiral lock waterproof case of the present invention.

2 is a perspective view of another perspective view of the non-spiral lock waterproof case of the present invention.

3 is an exploded perspective view of the non-spiral lock waterproof case of the present invention.

4 is another perspective exploded view of the non-spiral lock waterproof case of the present invention.

FIG. 5 is an exploded perspective view of the top waterproof module and the waterproof gasket of the non-spiral lock waterproof casing of the present invention.

FIG. 6 is another perspective exploded view of the top waterproof module and the waterproof gasket of the non-spiral lock waterproof casing of the present invention.

Figure 7 is a cross-sectional view taken along line 7-7 of Figure 1.

Figure 8 is a cross-sectional view taken along line 8-8 of Figure 1.

Please refer to FIG. 1 to FIG. 8 , which are an embodiment of the present invention. It should be noted that the related embodiments refer to the related quantities and appearances of the drawings, and only the embodiments of the present invention are specifically described. In order to understand the contents thereof, it is not intended to limit the scope of the invention.

As shown in FIG. 1 and FIG. 2, the present embodiment is a non-thread-locking waterproof casing 100. That is, the waterproof casing 100 referred to in this embodiment is not fixed by means of a screw lock, and does not need to form any screw-lock structure. In order to improve the convenience of use and reduce the overall size. Furthermore, the non-spiral waterproof housing 100 is used in this embodiment. A smart phone (not shown) provided with a fingerprint recognition button is installed therein, and the non-spiral waterproof case 100 of the embodiment does not hinder the use of the fingerprint recognition function of the smart phone.

Referring to FIG. 3 and FIG. 4 , the non-spiral waterproof housing 100 includes a top waterproof module 1 , a waterproof gasket 2 disposed in the top waterproof module 1 ( FIG. 7 ), and waterproof with the top. The bottom waterproof module 3 of the module 1 is detachably coupled to each other. The top waterproof module 1 and the bottom waterproof module 3 can be mutually pressed against each other and pressed against the waterproof gasket 2 so that the top waterproof module 1 and the bottom waterproof module 3 pass between the pressed waterproof gasket 2 The effect of seamless connection is achieved, thereby preventing water from flowing into the non-spiral waterproof housing 100 from the junction between the top waterproof module 1 and the bottom waterproof module 3.

In order to facilitate the understanding of the specific structure of the non-spiral waterproof housing 100, the following describes the construction of the top waterproof module 1, the waterproof gasket 2, and the bottom waterproof module 3, and then explain each other in a timely manner. Interrelationship.

Referring to FIG. 5 and FIG. 6 , the top waterproof module 1 includes a top case 11 , a transparent plate 12 disposed in the top case 11 , and is sandwiched between the top case 11 and the transparent plate 12 . An elastic film 13. The top case 11 has a substantially rectangular top plate 111 and an annular top side plate 112 extending substantially perpendicularly from the periphery of the top plate 111.

As shown in FIG. 6 and FIG. 7 , the inner surface of the top plate 111 is recessed to form a receiving groove 1111 ( FIG. 7 ) at a certain distance from the top side plate 112 , and the contour of the receiving groove 1111 is suitable. Embed a smart phone inside. The slot of the receiving slot 1111 is recessed with a mounting slot 1112 (as shown in FIG. 7), and the mounting slot 1112 is formed with a rectangular touch operation window 1113 and a circular fingerprint pressing hole 1114. When the smart phone is embedded in the receiving slot 1111, the touch operation window 1113 is used to correspond to the touch operation portion of the smart phone, and the fingerprint pressing hole 1114 is the fingerprint recognition button corresponding to the smart phone. .

Further, the inner surface of the top plate 111 is formed with a stopper portion 1115. The stopper portion 1115 is adjacent to the top side plate 112 and is located outside the accommodating groove 1111. In other words, the inner surface of the top plate 111 is concave on the inner side of the stopper portion 1115. The accommodating groove 1111 is formed. In the present embodiment, the blocking portion 1115 is a plurality of protruding pillars, and the pillars are substantially spaced around the outer edge of the receiving groove 1111. A ring-shaped groove 113 is defined between the blocking portion 1115 and the top side plate 112. Further, a limiting portion 1121 is formed at an inner edge portion of the top side plate 112 connected to the top plate 111 (see FIG. 7). In the present embodiment, the portion 1121 is substantially annular, and the annular groove 113 is defined between the limiting portion 1121 of the top side plate 112 and the blocking portion 1115 of the top plate 111.

Referring to FIG. 6 to FIG. 8 , the transparent plate 12 has a contour substantially corresponding to the contour of the mounting groove 1112 , and the transparent plate 12 includes a main body portion 121 and an extending portion 122 extending from the main body portion 121 in the embodiment. The extending portion 122 is formed with a circular hole 1221 corresponding to the fingerprint pressing hole 1114. The transparent plate 12 is fixed (eg, adhered) to the inner surface of the top plate 111 of the top case 11 and is located inside the blocking portion 1115. Further, the transparent plate 12 is installed in the mounting groove 1112, and the periphery of the transparent plate 12 The main body portion 121 of the transparent plate 12 completely covers the touch operation window 1113, and the circular hole 1221 of the extending portion 122 corresponds to the fingerprint pressing hole 1114, so that the transparent plate 12 does not cover the fingerprint. The hole 1114 is pressed. Furthermore, the transparent plate 12 and the groove bottom of the accommodating groove 1111 can be disposed substantially in a coplanar manner, so that the surface of the smart phone can be disposed in a flat manner on the groove bottom of the transparent plate 12 and the accommodating groove 1111. In addition, the transparent plate 12 of the present embodiment can be changed in appearance according to the requirements of the designer, and is not limited herein.

The outer shape of the elastic film 13 is larger than the fingerprint pressing hole 1114 of the top case 11 and larger than the circular hole 1221 of the transparent plate 12. Wherein, the periphery of the elastic film 13 is fixed between the inner surface of the top plate 111 and the transparent plate 12, and the elastic film 13 covers the transparent plate 12. The circular hole 1221 and the fingerprint of the top case 11 press the hole 1114. In other words, the elastic film 13 can be exposed through the circular hole 1221 of the transparent plate 12 and the fingerprint pressing hole 1114 of the top case 11. In more detail, the elastic film 13 is disposed in the mounting groove 1112, and the peripheral side of the elastic film 13 (the upper side of the periphery of the elastic film 13 in FIG. 8) is adhered to the groove bottom of the mounting groove 1112, and the elastic film The other side of the 13th circumference (the lower side of the periphery of the elastic film 13 in FIG. 8) is pressed and fixed by the extending portion 122 of the transparent plate 12, whereby the elastic film 13 is fixed to the groove bottom of the mounting groove 1112 and the transparent plate 12 is extended. Between the sections 122.

Furthermore, when the smart phone is installed in the non-spiral waterproof case 100 (not shown), the elastic film 13 corresponding to the fingerprint pressing hole 1114 can be pressed (for example, the user's finger pressure) and moved away from the fingerprint. The direction of the pressing hole 1114 generates a recoverable deformation to abut the fingerprint recognition button of the smart phone and can prevent the fingerprint recognition function of the fingerprint recognition button.

The waterproof gasket 2 is disposed in the annular groove 113 of the top case 11, and a portion of the waterproof gasket 2 protrudes from the annular groove 113, that is, the waterproof gasket 2 slightly protrudes from the top case The limiting portion 1121 of the body 11 is used to facilitate pressing when the bottom waterproof module 3 is mounted.

Referring to FIG. 3 and FIG. 4 , the bottom waterproof module 3 includes a bottom case 31 and a plurality of waterproof elements 32 , and the waterproof element 32 is coupled to the bottom case 31 in a double injection manner. The bottom case 31 has a substantially rectangular bottom plate 311 and an annular bottom side plate 312 extending substantially perpendicularly from the periphery of the bottom plate 311. The end surface of the bottom side plate 312 away from the bottom plate 311 (such as the top end surface of the bottom side plate 312 in FIG. 3) is defined as a pressing surface 3121.

It should be noted that, as shown in FIG. 4, FIG. 6, and FIG. 7, the top case 11 is formed with a top fastening portion 1122 on the inner surface of the top side plate 112, and the bottom case 31 is on the bottom side plate 312. A bottom fastening portion 3122 is formed on the outer surface, and the top fastening portion 1122 and the bottom fastening portion 3122 are configured to be engageable with each other. In the embodiment, the top fastening portion 1122 includes a plurality of ridges, and the bottom fastening portion 3122 includes a plurality of concave holes. However, in the actual application, the top latching portion 1122 and the bottom latching portion 3122 can be changed and adjusted according to the designer's requirements, and are not limited herein. For example, it is not excluded to design the top snap portion 1122 as a plurality of recessed holes (not shown), and the bottom snap portion 3122 is designed as a plurality of ridges (not shown).

Furthermore, the top case 11 of the top waterproof module 1 and the bottom case 31 of the bottom waterproof module 3 can be mutually fastened by the top snap portion 1122 and the bottom snap portion 3122 (ie, and The ribs are respectively engaged in the recesses, so that the pressing surface 3121 of the bottom case 31 abuts against the limiting portion 1121 of the top housing 11 and is located outside the blocking portion 1115 (see FIG. 7). The waterproof gasket 2 is deformed by being pressed by the pressing surface 311 of the bottom case 31 and the groove bottom 113 of the top case 11 to be pressed. Thereby, the pressing surface 3121. of the bottom case 31 and the groove bottom of the annular groove 113 of the top case 11 can pass through the deformed waterproof gasket 2, and the pressing surface 3121 and the top of the bottom case 31 are brought into contact with each other. The groove bottoms of the annular groove 113 of the casing 11 are respectively joined to the waterproof gasket 2 so as to form a gap.

In addition to the above description, the non-spiral waterproof housing 100 is directed to other functional buttons of the smart phone (such as a volume key or a key switch), a jack (such as a power hole or a headphone jack), or a sound hole (such as: The non-spiral waterproof housing 100 of the present embodiment is also provided with a corresponding design, and the present embodiment will generally describe the designs as follows: Please refer to FIG. 4 and FIG. 6 . . The bottom side panel 312 includes an inner panel 312a and a plurality of functional blocks 312b extending from an outer surface of the inner panel 312a. That is, the inner panel 312a has a substantially annular configuration, and the functional block 312b is self-contained. The outer surface of the portion of the plate 312a is protruded, so that the thickness of the portion where the bottom side plate 312 is formed with the functional block 312b is greater than the thickness of the inner plate 312a. The bottom buckle portion 3122 is formed not provided The outer surface of the inner panel 312a of the functional block 312b is provided, and the bottom side panel 312 is provided with at least one recessed hole at each of the laterally opposite sides of each functional block 312b. The pressing surface 3121 is an end surface of the inner plate 312a away from the bottom plate 311 (such as the top end surface of the inner plate 312a in FIG. 4).

The inner contour of the top side panel 112 is slightly larger than the outer contour of the inner panel 312a of the bottom side panel 312, and the top side panel 112 is formed with a plurality of notches 1123 corresponding to the functional blocks 312b, and each of the notches 1123 has a corresponding function. The block 312b is a structure that can be fitted to each other. Furthermore, the top side panel 112 is provided with at least one ridge on each of the laterally opposite sides of each of the notches 1123.

Therefore, when the top case 11 and the bottom case 31 are fastened to each other, the top side plate 112 shields the inner side plate 312a of the bottom side plate 312 from which the functional block 312b is not provided, and the functional block 312b of the bottom side plate 312 respectively The notch 1123 of the top side panel 112 is embedded, and the outer surface of the bottom side panel 312 is flush with the outer surface of the top side panel 112, so that the outer surface of the non-spiral waterproof housing 100 presents a smooth curved surface (see FIGS. 1 and 2). . Moreover, the ribs beside the notches 1123 of the top side panel 112 are fastened to the recesses corresponding to the corresponding functional blocks 312b, so that the top housing 11 is provided with the notches 1123 to ensure good fastening. effect.

Further, the function block 312b is a function button (such as a volume key or a switch key) and a jack (such as a power source) corresponding to the smart phone when the smart phone is embedded in the receiving slot 1111. a hole or a headphone hole), or a sound hole (such as a position where the earphone or the microphone is disposed), that is, the function block 312b includes at least one button hole 3123, at least one connector hole 3124, and at least one tone Hole 3125. The waterproof component 32 is provided with at least one waterproof soft key 321 , at least one waterproof soft plug 322 , and at least one waterproof gas permeable membrane 323 corresponding to the functional block 312 b .

The waterproof soft key 321 is tightly embedded in the button hole 3123. The waterproof soft plug 322 has a joint portion 3221 fixed to the bottom plate 311 (see FIG. 2) and is movably inserted into the connector. a tight portion 3222 of the hole 3124 (see FIG. 2) is waterproof The gas film 323 is embedded in the bottom side plate 312 and corresponds to the sound hole 3125. Furthermore, the waterproof soft key 321 , the waterproof soft plug 322 , and the waterproof gas permeable membrane 323 are combined with the bottom case 31 in a two-shot molding manner.

[Possible effects of the embodiments of the present invention]

In summary, the non-thread-locking waterproof casing provided by the embodiment of the present invention has a top casing and a bottom casing assembled by mutual cooperation of the top buckle portion and the bottom buckle portion, thereby further forming the top casing. The waterproof gasket is pressed together with the bottom case to achieve a waterproof effect. The non-spiral waterproof housing of the embodiment is not fixed by means of a screw lock, thereby improving the convenience of use of the non-spiral waterproof housing and reducing the overall volume. Furthermore, the non-spiral waterproof housing is fastened to the recessed hole beside the corresponding functional block through the ribs of each of the top side panels, so that the top housing is provided with a notch to ensure a good buckle. Combined effect.

In addition, the non-spiral waterproof housing of the embodiment is provided with an elastically deformable elastic film when the smart phone is installed therein, so that the non-spiral waterproof housing can prevent the fingerprint recognition function of the smart phone. Use.

Moreover, in this embodiment, waterproof components (such as waterproof soft keys, waterproof soft plugs, and waterproof gas permeable membranes) are disposed in the bottom casing by means of two-shot forming, thereby effectively reducing the production cost of the non-spiral waterproof housing. And improve production efficiency.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent variations and modifications of the scope of the invention are intended to be within the scope of the invention.

100‧‧‧Non-lock-type waterproof enclosure

1‧‧‧Top waterproof module

11‧‧‧Top housing

1123‧‧‧ gap

12‧‧‧Transparent board

13‧‧‧elastic film

3‧‧‧ bottom waterproof module

31‧‧‧Bottom shell

311‧‧‧floor

312‧‧‧ bottom side panel

312a‧‧‧ inner board

312b‧‧‧ functional block

3121‧‧‧ Pressing surface

3122‧‧‧ bottom buckle (eg recessed hole)

3123‧‧‧Keyhole

3124‧‧‧Connector hole

3125‧‧‧ sound hole

32‧‧‧Waterproof components

321‧‧‧Waterproof soft key

322‧‧‧Waterproof soft plug

323‧‧‧Waterproof breathable membrane

Claims (10)

A non-spiral waterproof housing for mounting a smart phone with a fingerprint recognition button, the non-spiral waterproof housing comprising: a top waterproof module comprising: a top housing having a a top plate and a top side plate extending substantially perpendicularly from a periphery of the top plate, the top plate forming a touch operation window and a fingerprint pressing hole; wherein the top surface of the top plate is formed with a stopping portion, the blocking portion is adjacent to the top plate a top side plate, and an annular groove is defined between the blocking portion and the top side plate, the top case is formed with a top buckle portion on the inner surface of the top side plate; and a transparent plate fixed to the top case The inner surface of the top plate of the body is located inside the blocking portion, the transparent plate completely covers the touch operation window and does not cover the fingerprint pressing hole; and an elastic film whose periphery is fixed to the inner surface of the top plate and the transparent plate And the elastic film covers the fingerprint pressing hole; wherein, when the smart phone is installed in the non-spiral waterproof casing, the elastic film portion corresponding to the fingerprint pressing hole can be pressed away The direction of the fingerprint pressing hole generates a recoverable deformation to abut the fingerprint identification button and can prevent the fingerprint recognition function of the fingerprint recognition button; a waterproof gasket disposed in the annular groove, and the waterproof a portion of the gasket protrudes from the annular groove; and a bottom waterproof module detachably fastened to the top waterproof module, the bottom waterproof module comprising: a bottom case having a bottom plate and the bottom plate a bottom side plate extending substantially perpendicularly from the periphery of the bottom plate; wherein, the end surface of the bottom side plate away from the bottom plate is defined as a pressing surface, and the bottom case is formed with a bottom buckle portion on an outer surface of the bottom side plate; The top waterproof module and the bottom waterproof module are detachably fastened to each other by the cooperation of the top snap portion and the bottom snap portion, so that the waterproof gasket is pressed by the bottom casing. The groove bottom of the annular groove is pressed and deformed, so that the pressing surface of the bottom case and the groove bottom of the annular groove are respectively formed in contact with the waterproof gasket. The non-thread-locking waterproof case according to claim 1, wherein the bottom side plate comprises an inner plate and a plurality of functional blocks extending from an outer surface of the inner plate portion, wherein the bottom buckle portion is formed without The outer surface of the remaining portion of the inner panel of the functional block, and the pressing surface is an end surface of the inner panel away from the bottom plate, wherein the top side panel is formed with a plurality of notches corresponding to the functional blocks; wherein the bottom The functional blocks of the side panels are respectively embedded in the notches of the top side panel, and the outer surface of the bottom side panel is aligned with the outer surface of the top side panel. The non-thread-locking waterproof case of claim 2, wherein the top snap portion includes a plurality of ribs, the bottom snap portion includes a plurality of recessed holes, and the ribs are respectively engaged with the recesses Inside the hole. The non-thread-locking waterproof casing according to claim 3, wherein at least one rib is provided on each of opposite side portions of each of the top side plates, and the opposite sides of each functional block of the bottom side plate are respectively At least one recessed hole is provided. The non-thread-locking waterproof case of claim 4, wherein the functional blocks comprise at least one button hole, the bottom waterproof module comprises at least one waterproof soft key, and the waterproof soft key is closely embedded Set in the button hole. The non-thread-locking waterproof case of claim 5, wherein the functional blocks comprise at least one connector hole, the bottom waterproof module comprises at least one waterproof soft plug, the waterproof soft plug has a fixed a joint portion of the bottom plate and a close portion movably inserted into the connector hole. The non-thread-locking waterproof casing of claim 6, wherein the functional blocks comprise at least one sound hole, the bottom waterproof module comprises at least one waterproof gas permeable membrane, the waterproof gas permeable membrane is embedded in the bottom The side plates correspond to the sound holes. The non-thread-locking waterproof casing according to claim 7, wherein the waterproof soft key, the waterproof soft plug, and the waterproof gas permeable membrane are combined with the bottom casing in a two-shot forming manner. The non-thread-locking waterproof casing according to any one of claims 1 to 8, wherein the inner surface of the top plate is recessed to form a receiving groove on the inner side of the blocking portion, and the groove of the receiving groove is concave. A mounting groove is disposed, the transparent plate is disposed in the mounting groove, and the transparent plate is substantially coplanar with the groove bottom of the receiving groove. The non-thread-locking waterproof casing according to any one of the preceding claims, wherein the top edge of the top side plate connected to the top plate is formed with a limiting portion, the limiting portion of the top side plate and the blocking portion The annular groove is defined between the stops, and the pressing surface abuts against the limiting portion and is located outside the blocking portion.