Sealed waterproof lock

Abstract

The present invention relates to a sealed waterproof lock, comprising a lock core sleeve and a lock core rotatably matched on the lock core sleeve, a lock core sleeve flange ring is provided at the front end port of the lock core sleeve, the lock core comprises a columnar lock core body, an annular lock core flange portion is integrally extended outward from the end of the columnar lock core body, an annular sealing plug-in groove is provided on the end surface of the lock core flange portion axially facing the tail of the lock core, the lock core sleeve flange ring is inserted into the sealing plug-in groove, and a waterproof sealing mechanism is provided between the lock core sleeve flange ring and the sealing plug-in groove. The lock core end is integrally formed with an outward-turned flange structure, which has the advantage of good waterproof sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of locks. Background Art

[0002] like Figure 1 As shown, the main structure of the existing lock includes a lock core 1 and a lock cylinder 2 rotatably fitted in the lock core. The lock core 2 is built into the lock core 1, and the lock core is sealed between the outer periphery of the head of the lock core near the opening of the lock core and the inner cavity wall of the lock core via a rubber sealing ring. The lock of this structure has the risk of rainwater invading from the gap between the lock core and the lock core during long-term outdoor use, and has the defect of insufficient waterproof sealing performance. Summary of the invention

[0003] Purpose of the invention: To overcome the defects of the prior art, the present invention provides a sealed waterproof lock with an outward-turned flange structure integrally formed at the end of a lock core and good waterproof sealing performance.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A sealed and waterproof lock comprises a lock core sleeve and a lock core rotatably fitted on the lock core sleeve, a lock core sleeve flange ring is provided at the front end port of the lock core sleeve, and the lock core comprises a cylindrical lock core body, characterized in that an annular lock core flange portion is integrally extended outward from the end of the cylindrical lock core body, an annular sealing plug-in groove is provided on the end surface of the lock core flange portion axially facing the rear end of the lock core, the lock core sleeve flange ring is inserted into the sealing plug-in groove, and a waterproof sealing mechanism is provided between the lock core sleeve flange ring and the sealing plug-in groove.

[0006] By adopting the above technical scheme, the end of the cylindrical lock core body extends outward to form a lock core flange part, which blocks the lock core sleeve port, and the sealing plug-in groove of the lock core flange part is plugged into the lock core sleeve flange ring to achieve the end of the lock core covering the end of the lock core sleeve, which not only changes the gap opening position formed when the lock core and the lock core sleeve are matched, thereby improving the sealing and waterproof performance, but also provides space for the design of the sealing structure between the lock core sleeve and the lock core under the design of the lock core flange part. Further, under the plug-in cooperation of the lock core sleeve flange ring and the lock core flange part, and the design of the waterproof sealing mechanism between the lock core sleeve flange ring and the sealing plug-in groove, the sealing and waterproof performance between the lock core and the lock core sleeve can be better guaranteed.

[0007] Preferably, the waterproof sealing mechanism includes a stepped outer circumferential wall on the flange ring of the lock sleeve, and accordingly, the outer diameter side circumferential surface of the sealing plug-in groove has a stepped groove wall adapted to the stepped outer circumferential wall on the flange ring of the lock sleeve, the large diameter section of the stepped groove wall corresponds to the opening side of the sealing plug-in groove, the small diameter section of the stepped groove wall corresponds to the bottom side of the sealing plug-in groove, and an axial step surface is formed between the small diameter section and the large diameter section of the stepped groove wall. Under this structural design, the outer circumferential wall of the flange ring of the lock sleeve and the outer diameter side circumferential surface of the sealing plug-in groove adopt a stepped structure to form a labyrinth gap seal, which increases the climbing distance and difficulty of debris invasion, thereby improving the waterproof sealing performance; and the axial step portion between the flange ring of the lock sleeve and the flange part of the lock core cooperates to achieve the axial support of the flange ring of the lock sleeve on the flange part of the lock core, so that the operation of the lock core is more stable and reliable.

[0008] Preferably, the large diameter section of the stepped groove wall is a tapered surface that is inclined obliquely toward the outer diameter side from the axial inner end to the outer end, and the large diameter circumferential surface of the stepped outer circumferential wall on the flange ring of the locking sleeve is a tapered annular surface that matches the tapered surface. Under this structural design, the large diameter section of the stepped groove wall is a tapered surface, that is, the notch side of the sealing insert groove and the flange ring of the locking sleeve are matched with an inclined surface, which increases the gap length and facilitates the discharge of impurities from the sealing insert groove.

[0009] Preferably, the waterproof sealing mechanism includes a rubber sealing ring, which is clamped on the outer circumference of the flange ring of the lock core sleeve, and the outer circumferential surface of the flange ring of the lock core sleeve is sealed with the wall of the sealing plug-in groove through the rubber sealing ring. Under this structural design, waterproof sealing is achieved through the rubber sealing ring, and the sealing effect is good; moreover, the rubber sealing ring is arranged on the small diameter circumferential surface of the stepped outer circumferential wall of the flange ring of the lock core sleeve. That is, the inside of the sealing plug-in groove is sealed by the rubber sealing ring, and after the gap sealing is fully utilized, it is sealed again by the rubber sealing ring, and the sealing is reliable, and the rotational cooperation between the lock core and the lock core sleeve is also more stable and reliable.

[0010] Preferably, a shoulder is formed between the inner diameter side circumference of the sealing inserting groove and the outer cylindrical surface of the columnar lock core body, and a step portion corresponding to the shoulder is formed in the front port of the lock core sleeve, and a stepped front end hole is correspondingly formed in the lock core sleeve. Under this structural design, the lock core and the inner hole cavity of the lock stop sleeve are stepped, which improves the sealing performance and forms an axial limit support; the stepped front end hole facilitates the assembly of the lock core in the lock core sleeve.

[0011] Preferably, a sealing rubber ring is provided on the outer cylindrical surface of the cylindrical lock core body, and the sealing rubber ring forms a sealing fit between the outer cylindrical surface of the cylindrical lock core body and the inner hole of the lock core sleeve. Under this structural design, the sealing rubber ring is used to seal between the inside of the lock core sleeve and the cylindrical lock core body, thereby improving the waterproof performance.

[0012] Preferably, the lock core flange is axially protruding from the front end surface of the cylindrical lock core body in an annular shape, and a concave cavity is formed at the front end of the lock core through the lock core flange. A tool operating head is provided on the front end surface of the cylindrical lock core body, and the tool operating head is located in the concave cavity. Under this structural design, a concave cavity for accommodating the tool operating head is provided at the front end of the lock core, and the structure is compact.

[0013] Preferably, the rear axial end face of the flange ring of the lock core sleeve is provided with a sealing ring groove, an end face rubber sealing gasket is provided in the sealing ring groove, a status indicator ring for indicating the status of the lock core is sleeved on the lock core sleeve, a locking ring for axially limiting and locking the status indicator ring is provided on the lock core sleeve, and the status indicator ring and the flange ring of the lock core sleeve are sealed and matched via the end face rubber sealing gasket. Under this structural design, the status indicator ring indicates the rotation position of the lock core and is axially sealed and matched with the flange ring of the lock core sleeve on the lock core sleeve.

[0014] Preferably, the outer circumferential surface of the lock core flange is a cone with a small diameter at the front end and a large diameter at the rear end. With this structural design, the structure is compact.

[0015] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the prior art of the present invention;

[0017] Figure 2 This is a schematic structural diagram of a sealed and waterproof lock according to a specific embodiment of the present invention;

[0018] Figure 3 It is a structural schematic diagram of a lock core in a specific embodiment of the present invention;

[0019] Figure 4 It is a schematic structural diagram of a locking sleeve according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0020] See attached Figures 2~4To facilitate the description of the structure created by the present invention, the direction of the end of the sealed waterproof lock facing the tool operation is "front", as shown in the a direction in the attached drawings, and the corresponding other direction opposite to the "front" is "rear", as shown in the b direction in the attached drawings. The present invention discloses a sealed waterproof lock, comprising a lock core sleeve 1 and a lock core 2 rotatably fitted on the lock core sleeve 1, a lock core sleeve flange ring 11 is provided at the front end port of the lock core sleeve 1, the lock core 2 comprises a columnar lock core body 21, an annular lock core flange portion 22 is integrally extended outward from the end of the columnar lock core body 21, an annular sealing plug-in groove 23 is provided on the end surface of the lock core flange portion 22 axially facing the rear end of the lock core 2 (as shown in the figure, the end of the lock core facing the b direction), the lock core sleeve flange ring 11 is inserted into the sealing plug-in groove 23, and a waterproof sealing mechanism is provided between the lock core sleeve flange ring 11 and the sealing plug-in groove 23. The end of the cylindrical lock core body extends outward to form a lock core flange part, which blocks the lock core sleeve port, and the sealing plug-in groove of the lock core flange part is plugged into the lock core sleeve flange ring to achieve the end of the lock core covering the end of the lock core sleeve, which not only changes the position of the gap opening formed when the lock core and the lock core sleeve are matched, thereby improving the sealing and waterproof performance, but also, under the design of the lock core flange part, it can provide space for the design of the sealing structure between the lock core sleeve and the lock core. Further, under the plug-in cooperation of the lock core sleeve flange ring and the lock core flange part, and the design of the waterproof sealing mechanism between the lock core sleeve flange ring and the sealing plug-in groove, the sealing and waterproof performance between the lock core and the lock core sleeve can be better guaranteed.

[0021] The waterproof sealing mechanism includes a stepped outer circumferential wall 111 on the locking sleeve flange ring 11, and the stepped outer circumferential wall 111 on the locking sleeve flange ring 11 includes a small diameter circumferential surface 1110, a large diameter circumferential surface and an axial surface 1112. Correspondingly, the outer diameter side circumferential surface of the sealing plug-in groove 23 has a stepped groove wall 231 adapted to the stepped outer circumferential wall 111 on the locking sleeve flange ring 11, the large diameter section 2311 of the stepped groove wall 231 corresponds to the opening 230 side of the sealing plug-in groove 23, the small diameter section 2312 of the stepped groove wall 231 corresponds to the bottom side of the sealing plug-in groove 23, and an axial step surface 2313 is formed between the small diameter section 2312 and the large diameter section 2311 of the stepped groove wall 231. The outer circumferential wall of the lock core sleeve flange ring and the outer diameter side circumferential surface of the sealing insertion groove adopt a stepped structure to form a maze-shaped gap seal, which increases the climbing distance and difficulty of debris intrusion, thereby improving the waterproof sealing performance; and the axial step part between the lock core sleeve flange ring and the lock core flange part cooperates to achieve axial support of the lock core flange part by the lock core sleeve flange ring, making the operation of the lock core more stable and reliable.

[0022] The large diameter section 2311 of the stepped groove wall 231 is a tapered surface that is inclined obliquely toward the outer diameter side from the axial inner end to the outer end, and the large diameter circumferential surface of the stepped outer circumferential wall 111 on the locking sleeve flange ring 11 is a tapered annular surface 1111 that matches the tapered surface. The large diameter section of the stepped groove wall is a tapered surface, that is, the notch side of the sealing insert groove and the locking sleeve flange ring are matched with an inclined surface, which increases the gap length and facilitates the discharge of impurities from the sealing insert groove.

[0023] Among them, it is preferred that the outer circumferential surface 220 of the lock core flange 22 is designed as a cone with a small front diameter and a large rear diameter. The conical design of the lock core flange is consistent with the traditional lock core installation and matching requirements, and can also better realize the design of the stepped outer circumferential side of the sealing plug-in groove and the large diameter section of the stepped groove wall as a conical surface, and the overall structure is compact.

[0024] In this specific embodiment, the waterproof sealing mechanism includes a rubber sealing ring 3, which is clamped on the outer circumference of the flange ring 11 of the lock core sleeve, and the outer circumferential surface of the flange ring 11 of the lock core sleeve is sealed with the wall of the sealing plug-in groove 23 through the rubber sealing ring 3. The waterproof sealing treatment is achieved through the rubber sealing ring, and the sealing effect is good; moreover, the rubber sealing ring 3 is arranged on the small diameter circumferential surface 1110 of the stepped outer circumferential wall of the flange ring 11 of the lock core sleeve. That is, the inside of the sealing plug-in groove is sealed by the rubber sealing ring, and after the gap is fully used for sealing, it is sealed again by the rubber sealing ring, and the sealing is reliable, and the rotational cooperation between the lock core and the lock core sleeve is also more stable and reliable.

[0025] In order to further improve the sealing and waterproof performance, a sealing rubber ring 4 is provided on the outer cylindrical surface of the cylindrical lock core body 21, and the sealing rubber ring 4 forms a sealing fit between the outer cylindrical surface of the cylindrical lock core body 21 and the inner hole 10 of the lock core sleeve 1. In addition, a shoulder 211 is formed between the inner diameter side circumferential surface of the sealing plug groove 23 and the outer cylindrical surface of the cylindrical lock core body 21, and the sealing plug groove of the lock core surrounds the outer circumferential side of the outer cylindrical surface of the cylindrical lock core body, and a step portion 12 corresponding to the shoulder 211 is formed in the front end of the lock core sleeve 1, and a stepped front end hole is formed in the lock core sleeve 1 accordingly, and the stepped front end hole has a large diameter hole 100 and a small diameter hole 101 connected by the step portion 12. In this way, the inner hole cavity of the lock core and the lock stopper sleeve is matched in a stepped manner to improve the sealing performance. Similarly, an axial limit support is formed on the inner diameter side of the lock core flange ring, making the lock core match more stable and reliable; under the formed stepped front end hole, the port of the lock core sleeve is large, which is convenient for the lock core to be assembled in the lock core sleeve. A conical chamfered surface 121 is provided at the connection position between the step portion 12 and the small diameter hole 101 of the stepped front end hole to facilitate the sealing rubber ring to be pressed into the locking sleeve.

[0026] A protruding tool operating head 24 is provided on the front end face of the cylindrical lock core body 21. The tool operating head 24 facilitates the use of a tool to twist the lock core. In order to avoid the protruding tool operating head increasing the axial length of the lock core, the present invention creates a structural design using the lock core flange part, specifically: the lock core flange part 22 is axially protrudingly provided in a ring shape on the front end face of the cylindrical lock core body 21, and a concave cavity 25 is formed at the front end of the lock core 2 through the lock core flange part 22, and the tool operating head is located in the concave cavity. A concave cavity for accommodating the tool operating head is provided at the front end of the lock core, and the structure is compact.

[0027] In this specific embodiment, the axial rear end face of the locking sleeve flange ring 11 is provided with a sealing ring groove 113, and an end face rubber sealing gasket 5 is provided in the sealing ring groove 113. The locking sleeve 1 is provided with a state indicating ring 6 for indicating the state of the lock cylinder, and a locking ring 7 for axially limiting and locking the state indicating ring 6 is provided on the locking sleeve 1. The outer circumference of the locking sleeve 1 is provided with an external thread, and the locking ring 7 is threadedly screwed on the locking sleeve 1. The state indicating ring 6 and the locking sleeve flange ring 11 are sealed and matched through the end face rubber sealing gasket 5. The state indicating ring realizes the indication of the rotation position of the lock cylinder, and at the same time, it is axially sealed and matched with the locking sleeve flange ring on the locking sleeve.

[0028] The present invention has the following advantages: 1. The front end of the lock core is integrally formed with a lock core flange, which is inserted into and fitted with the lock core flange ring to achieve good waterproof sealing performance;

[0029] 2. The rubber sealing ring between the flange of the lock core and the flange of the lock core sleeve, as well as the sealing rubber ring between the outer cylindrical surface of the columnar lock core body and the inner hole of the lock core sleeve, constitute a double rubber ring sealing mechanism to achieve a safer and more reliable waterproof sealing structure; and under the double rubber sealing mechanism, the compression movement of the lock core is more evenly stressed;

[0030] The one-piece lock core structure with lock core flange can achieve good waterproof sealing and avoid the need for secondary installation of the waterproof cover.

Claims

1. A sealed and waterproof lock, comprising a lock core sleeve and a lock core rotatably fitted on the lock core sleeve, a lock core flange ring is provided at the front end of the lock core sleeve, and the lock core comprises a cylindrical lock core body, Features: An annular lock core flange portion is integrally extended outward from the end of the cylindrical lock core body, and an annular sealing plug-in groove is provided on the end surface of the lock core flange portion axially facing the tail of the lock core. The lock core sleeve flange ring is inserted into the sealing plug-in groove, and a waterproof sealing mechanism is provided between the lock core sleeve flange ring and the sealing plug-in groove.

2. The sealed waterproof lock according to claim 1, Features: The waterproof sealing mechanism includes a stepped outer circumferential wall on the locking sleeve flange ring. Correspondingly, the outer diameter side circumferential surface of the sealing plug-in groove has a stepped groove wall that is adapted to the stepped outer circumferential wall on the locking sleeve flange ring. The large diameter section of the stepped groove wall corresponds to the opening side of the sealing plug-in groove, and the small diameter section of the stepped groove wall corresponds to the bottom side of the sealing plug-in groove. An axial step surface is formed between the small diameter section and the large diameter section of the stepped groove wall.

3. The sealed waterproof lock according to claim 2, Features: The large diameter section of the stepped groove wall is a conical surface inclined obliquely toward the outer diameter side from the axial inner end to the outer end, and the large diameter circumferential surface of the stepped outer circumferential wall on the locking sleeve flange ring is a conical annular surface adapted to the conical surface.

4. The sealed and waterproof lock according to claim 1, Features: The waterproof sealing mechanism comprises a rubber sealing ring, which is clamped on the outer circumference of the flange ring of the lock gall sleeve. The outer circumference of the flange ring of the lock gall sleeve is sealed with the wall of the sealing plug-in groove through the rubber sealing ring.

5. The sealed and waterproof lock according to claim 2, Features: The waterproof sealing mechanism includes a rubber sealing ring, which is clamped on the outer circumference of the flange ring of the lock gall sleeve. The outer circumferential surface of the flange ring of the lock gall sleeve is sealed with the wall of the sealing plug-in groove through the rubber sealing ring. The rubber sealing ring is arranged on the small diameter circumferential surface of the stepped outer circumferential wall of the flange ring of the lock gall sleeve.

6. The sealed and waterproof lock according to claim 1, Features: A shoulder is formed between the inner diameter side circumferential surface of the sealing plug-in groove and the outer cylindrical surface of the cylindrical lock core body, and a step portion corresponding to the shoulder is formed in the front end of the lock sleeve, and a stepped front end hole is correspondingly formed in the lock sleeve.

7. The sealed waterproof lock according to claim 1, 4 or 5, Features: A sealing rubber ring is arranged on the outer cylindrical surface of the columnar lock core body, and a sealing fit is formed between the outer cylindrical surface of the columnar lock core body and the inner hole cavity of the lock core sleeve through the sealing rubber ring.

8. The sealed and waterproof lock according to claim 1, Features: The lock core flange portion is axially protruding in a ring shape on the front end surface of the columnar lock core body, and a concave cavity is formed at the front end of the lock core through the lock core flange portion. A tool operating head is provided on the front end surface of the columnar lock core body, and the tool operating head is located in the concave cavity.

9. The sealed and waterproof lock according to claim 1, Features: The axial rear end face of the lock core sleeve flange ring is provided with a sealing ring groove, and an end face rubber sealing gasket is provided in the sealing ring groove. A status indicator ring for indicating the status of the lock core is sleeved on the lock core sleeve, and a locking ring for axially limiting and locking the status indicator ring is provided on the lock core sleeve. The status indicator ring and the lock core sleeve flange ring are sealed with the end face rubber sealing gasket.

10. The sealed waterproof lock according to claim 1 or 2 or 3 or 4 or 5 or 6, Features: The outer circumferential surface of the lock core flange portion is a cone with a small diameter at the front end and a large diameter at the rear end.

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