Integrated handle and key hidden lock

Abstract

The utility model relates to the technical field of locks for well lids and access holes, in particular to an integrated handle key hidden lock, which is characterized by comprising a lock shell, a mandrel, a dustproof elastic pin and an elastic piece. The dustproof elastic pin is provided with a rod part, and the rod part is arranged in the core shaft in a penetrating manner through the elastic piece; a dustproof cap is further arranged at the end, away from the rod part, of the dustproof elastic pin and abuts against the hole part of the lock shell to prevent dust. The core shaft is rotatably arranged in the lock shell, and a pulling slide way for the dustproof cap to slide and a center slide way for the rod portion of the dustproof elastic pin to slide are formed in the core shaft. According to the lock, a complex limiting structure does not need to be arranged in the lock shell, and the dustproof elastic pin can play a role in dust prevention and can also play a role in driving the mandrel to rotate, so that the structural complexity is greatly simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of locks for manhole covers and inspection openings, and more particularly to an integrated handle and key concealed lock. Background Art

[0002] While existing locks for manhole covers or inspection hatches can prevent dust, their dustproof structures are complex, requiring numerous components and consuming significant time and effort for installation and maintenance. For example, Chinese utility model patent publication number CN215168922U discloses an integrated key-handle lock. The inner edge of the dedicated key needs to engage a matching screw in the lock cylinder, and the initial entry position of the dedicated key must be defined, requiring a boss. Furthermore, a retaining structure is also required within the lock housing to ensure the lock cylinder remains within the lock housing, reserving space for a spring and dust shield.

[0003] In summary, the dustproof locks in the prior art have a complex structure, and it is necessary to optimize their structure. Summary of the Invention

[0004] In order to solve the technical problems mentioned in the background technology, the utility model provides an integrated handle key concealed lock, which does not require a complex limiting structure to be set in the lock shell. Its dustproof spring pin can not only play a role in dust prevention, but also play a role in driving the core shaft to rotate, thereby greatly simplifying the structural complexity.

[0005] The technical solution adopted in this utility model is:

[0006] An integrated handle key concealed lock comprising a lock housing, a core shaft, a dustproof spring pin and an elastic member;

[0007] The dustproof pin has a rod portion, which is inserted into the core shaft through the elastic member; the end of the dustproof pin away from the rod portion is also provided with a dustproof cap, which abuts against the hole portion of the lock housing to prevent dust;

[0008] The core shaft is rotatably arranged in the lock housing, and a pull slideway for the dust cap to slide and a center slideway for the rod of the dustproof elastic pin to slide are provided in the core shaft.

[0009] It should be noted that the turning slide is located on the shaft wall of the core shaft, which is two notches opened on the shaft wall. These two notches can allow the dust cap to slide, and can also be used for the toggle block of the handle key to drive the core shaft to rotate; the center slide is a cylindrical hole opened at the center axis position of the core shaft, for the rod of the dustproof pin to slide and accommodate the elastic part.

[0010] The above-mentioned integrated handle key concealed lock also includes a handle key, which includes a toggle block, a toggle rod and a handle rod; wherein, one end of the toggle rod is connected to the handle rod, and the other end is connected to the toggle block; the toggle block can pass through the hole of the lock shell and press down the dustproof pin.

[0011] When in use, the dust cap can be pressed down by the handle key, so that the rod of the dust pin is retracted into the axial hole of the core shaft, and the dust cap part enters the slideway of the core shaft; when the toggle block of the handle key enters the slideway of the core shaft, the core shaft is driven to rotate by turning the handle key, thereby driving the lock tongue to open or close the manhole cover or inspection port.

[0012] In the above-mentioned integrated handle key concealed lock, the elastic part is a compression spring, one end of the compression spring abuts against the bottom surface of the central slide opened in the core shaft, and the other end of the compression spring is inserted into the rod of the dustproof pin and abuts against one side of the dustproof cap of the dustproof pin.

[0013] When the lock of the present invention is in a closed state, the dustproof spring pin blocks the hole of the lock housing under the elastic force of the compression spring to prevent dust.

[0014] In the above-mentioned integrated handle key concealed lock, the cross-section of the dustproof cap of the dustproof elastic pin is smaller at the upper end than at the lower end, and the cross-section gradually increases from the upper end to the lower end.

[0015] The cross-section of the top surface of the upper end of the chamfer gradually becomes smaller downwards. The directional word "upper" in the present invention refers to the top cover plate of the lock shell of the lock.

[0016] The above-mentioned integrated handle key concealed lock has a cylindrical lock shell with a cover plate, and a limit block is provided inside the lock shell near the hole; the upper end of the core shaft is provided with a groove that can be matched with the limit block.

[0017] In the above-mentioned integrated handle key concealed lock, the angle range of the groove provided on the upper end of the core shaft is 0 to 90 degrees, or 90 to 180 degrees.

[0018] This setting is to cooperate with the limit block to limit the rotation angle of the core shaft. When it reaches the limit position, it means that the lock tongue has locked or opened the manhole cover or inspection port.

[0019] In the above-mentioned integrated handle key concealed lock, an axial through groove is provided on the circumference of the core shaft.

[0020] The axial through-groove is provided so that when gravel falls into the lock, it can fall into the well through the axial through-groove.

[0021] The above-mentioned integrated handle key concealed lock also includes an elastic circlip; an annular groove is provided at the bottom of the inner wall of the cylinder of the lock shell, and the elastic circlip is provided in the annular groove to support the bottom of the core shaft.

[0022] In the above-mentioned integrated handle key concealed lock, the lower end of the core shaft is provided with a threaded rod, and the threaded rod passes through the lower end of the lock housing.

[0023] The above-mentioned integrated handle key concealed lock further comprises a lock tongue, which is fixed to the threaded rod at the lower end of the core shaft through a nut.

[0024] The above-mentioned integrated handle key concealed lock has an external thread provided on the lower portion of the outer wall of the lock shell, and at least one nut is configured on the external thread; the nut on the external thread of the lock shell is used to fix the lock to the manhole cover or inspection port.

[0025] The technical effects of the utility model are as follows:

[0026] 1. Dust-proof spring pin, with a dust-proof cap on the upper part for dust-proof sealing, and a rod on the lower part for guiding sliding in the core shaft; compared with the existing technology, the structure is greatly simplified and the production cost is reduced.

[0027] 2. The core shaft replaces the lock core in the prior art, and a slideway for the dust cap of the dustproof pin to slide is provided in the core shaft, so there is no need to provide a limiting structure for the dustproof pin and the spring in the lock housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 only 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 work.

[0029] Figure 1 This is an exploded view of an embodiment of the lock of the utility model;

[0030] Figure 2 This is a schematic structural diagram of a dustproof spring pin according to one embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of a core shaft according to one embodiment of the present invention;

[0032] Figure 4 is a cross-sectional view of a lock housing according to one embodiment of the present invention;

[0033] Figure 5 yes Figure 1Combined state diagram of

[0034] Figure 6 yes Figure 5 sectional view.

[0035] The following are the descriptions of the reference numerals:

[0036] 1. Lock housing; 101. Hole; 102. Limit block; 103. External thread; 104. Cover plate; 105. Annular groove; 2. Core shaft; 201. Pulley slide; 202. Center slide; 203. Groove; 204. Through groove; 205. Threaded rod; 3. Dustproof pin; 301. Rod; 302. Dustproof cap; 303. Sand leakage hole; 4. Compression spring; 5. Handle key; 501. Toggle block; 502. Toggle rod; 503. Handle rod; 6. Elastic retaining ring; 7. Lock tongue. DETAILED DESCRIPTION

[0037] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0038] like Figures 1-6 As shown, the utility model provides an integrated handle key concealed lock, comprising a lock housing 1, a core shaft 2, a dustproof spring pin 3 and an elastic member;

[0039] The dustproof pin 3 has a rod 301, which is inserted into the core shaft 2 through the elastic member; the end of the dustproof pin 3 away from the rod 301 also has a dustproof cap 302, which abuts against the hole 101 of the lock housing 1 to prevent dust;

[0040] The core shaft 2 is rotatably disposed in the lock housing 1 , and a pull slideway 201 for the dust cap 302 to slide and a center slideway 202 for the rod 301 of the dustproof pin 3 to slide are provided in the core shaft 2 .

[0041] The turning slide 201 is located on the shaft wall of the core shaft 2, and is two notches opened on the shaft wall. These two notches can allow the dust cap 302 to slide, and can also be used for the toggle block 501 of the handle key 5 to turn to drive the core shaft 2 to rotate; the center slide 202 is a cylindrical hole opened at the center axis position of the core shaft 2, for the rod 301 of the dustproof pin 3 to slide and accommodate the elastic part.

[0042] The outer wall diameter of the core shaft 2 needs to reserve a gap with the inner diameter of the lock housing 1, through which the core shaft 2 is allowed to rotate in the lock housing 1. However, the gap cannot be too large, and is generally selected to be 1mm to 5mm.

[0043] like Figure 2 As shown, in some embodiments, the dust cap 302 of the dustproof pin 3 is further provided with a sand leakage hole 303. The setting of the sand leakage hole 303 is conducive to the sand on the end surface of the manhole cover falling into the well through the sand leakage hole 303, thereby reducing the probability of the lock being stuck.

[0044] The dust cap 302 of the dustproof pin 3 has a cross section at the upper end smaller than that at the lower end, and is shaped so as to gradually increase in cross section from the upper end to the lower end.

[0045] like Figure 4 As shown, in some embodiments, the lock housing 1 is cylindrical with a cover plate 104, and a limit block 102 is provided inside the lock housing 1 near the hole 101; the upper end of the core shaft 2 is provided with a groove 203 that can be concave and convexly matched with the limit block 102.

[0046] The cylindrical structure with a cover plate 104, that is, one end of a cylindrical structure is closed with a cover plate 104, but a hole portion 101 is provided on the cover plate 104 for communicating with the interior of the cylindrical structure. The hole portion 101 is the hole portion 101 of the lock housing 1 and is sealed with a dustproof elastic pin 3.

[0047] like Figure 3 As shown, in some embodiments, the groove 203 provided at the upper end of the mandrel 2 extends over an angle of 90 degrees, or from 90 degrees to 180 degrees. This arrangement is intended to cooperate with the stop block 102 to limit the rotation angle of the mandrel 2. When the limit position is reached, it indicates that the locking tongue 7 has locked or opened the manhole cover or inspection opening.

[0048] like Figure 1 and Figure 6 As shown, in some embodiments, the lock of the present invention further includes a circlip 6; an annular groove 105 is provided at the bottom of the inner wall of the lock housing 1, and the circlip 6 is disposed within the annular groove 105 to support the bottom of the spindle 2. The circlip 6 is an annular elastic member with an opening. By slightly compressing the opening, it can be installed into the annular groove 105, thereby supporting the spindle 2.

[0049] like Figure 3As shown, in some embodiments, the lower end of the core shaft 2 is provided with a threaded rod 205, and the threaded rod 205 passes through the lower end of the lock housing 1. The lock of the present invention also includes a lock tongue 7, which is fixed to the threaded rod 205 at the lower end of the core shaft 2 by a nut.

[0050] An axial through groove 204 is provided on the circumference of the core shaft 2. The axial through groove 204 is provided so that when gravel falls into the lock, it can fall into the well through the axial through groove 204.

[0051] like Figure 1 、 Figure 4 As shown, in some embodiments, an external thread 103 is provided on the lower portion of the outer wall of the lock housing 1, and a nut is configured on the external thread 103; the nut on the external thread 103 of the lock housing 1 is used to fix the lock to a manhole cover or an inspection port.

[0052] like Figure 1 As shown, in some embodiments, a handle key 5 is further included, and the handle key 5 includes a toggle block 501, a toggle rod 502 and a handle rod 503; wherein, one end of the toggle rod 502 is connected to the handle rod 503, and the other end is connected to the toggle block 501; the toggle block 501 can pass through the hole 101 of the lock housing 1 and press down the dustproof pin 3.

[0053] When in use, the dust cap 302 can be pressed down by the handle key 5, so that the rod 301 of the dust pin 3 is retracted into the axial hole of the core shaft 2, and the dust cap 302 enters the slideway of the core shaft 2; when the toggle block 501 of the handle key 5 enters the slideway of the core shaft 2, the core shaft 2 is driven to rotate by rotating the handle key 5, thereby driving the lock tongue 7 to open or close the manhole cover or inspection port.

[0054] In some embodiments, the elastic member is a compression spring 4, one end of the compression spring 4 abuts against the bottom surface of the central slide 202 opened in the core shaft 2, and the other end of the compression spring 4 is inserted into the rod 301 of the dustproof pin 3 and abuts against a side surface of the dustproof cap 302 of the dustproof pin 3.

[0055] When the lock of the present invention is in a closed state, the dustproof spring pin 3 blocks the hole 101 of the lock housing 1 under the elastic force of the compression spring 4 to prevent dust.

[0056] The dustproof spring pin of the utility model has a dustproof cap on the upper part for dustproof sealing, and a rod on the lower part for guiding sliding in the core shaft; compared with the prior art, the structure is greatly simplified.

[0057] The core shaft of the utility model replaces the lock core in the prior art, and a slideway for sliding the dust cap of the dustproof elastic pin is provided in the core shaft, so it is unnecessary to provide a limiting structure for the dustproof elastic pin and the spring in the lock housing.

[0058] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An integrated handle key concealed lock, characterized in that: It includes a lock housing, a core shaft, a dustproof spring pin and an elastic part; The dustproof pin has a rod portion, which is inserted into the core shaft through the elastic member; the end of the dustproof pin away from the rod portion is also provided with a dustproof cap, which abuts against the hole portion of the lock housing to prevent dust; The core shaft is rotatably arranged in the lock housing, and a pull slideway for the dust cap to slide and a center slideway for the rod of the dustproof elastic pin to slide are provided in the core shaft.

2. The lock according to claim 1, characterized in that: It also includes a handle key, which includes a toggle block, a toggle rod and a handle rod; wherein, one end of the toggle rod is connected to the handle rod, and the other end is connected to the toggle block; the toggle block can pass through the hole of the lock shell and press down the dustproof pin.

3. The lock according to claim 2, characterized in that: The elastic member is a compression spring, one end of which abuts against the bottom surface of the central slideway opened in the core shaft, and the other end of the compression spring is inserted into the rod of the dustproof pin and abuts against a side surface of the dustproof cap of the dustproof pin.

4. The lock according to claim 3, characterized in that: The cross section of the dustproof cap at the upper end of the dustproof pin is smaller than that at the lower end, and the cross section gradually increases from the upper end to the lower end.

5. The lock according to claim 4, characterized in that: The lock housing is cylindrical with a cover plate, and a limit block is provided inside the lock housing near the hole; the upper end of the core shaft is provided with a groove that can be matched with the limit block.

6. The lock according to claim 5, characterized in that: The angle range of the groove provided at the upper end of the core shaft is 0 to 90 degrees, or 90 to 180 degrees.

7. The lock according to claim 6, characterized in that: An axial through groove is provided on the circumference of the core shaft.

8. The lock according to claim 7, characterized in that: It also includes an elastic retaining ring; an annular groove is provided at the bottom of the inner wall of the cylinder of the lock shell, and the elastic retaining ring is provided in the annular groove for supporting the bottom of the core shaft.

9. The lock according to claim 8, characterized in that: It also includes a lock tongue, which is fixed to the threaded rod at the lower end of the core shaft through a nut; the lower end of the core shaft is provided with a threaded rod, and the threaded rod passes through the lower end of the lock shell.

10. The lock according to claim 9, characterized in that: An external thread is provided on the lower portion of the outer wall of the lock housing, and at least one nut is configured on the external thread; the nut on the external thread of the lock housing is used to fix the lock to a manhole cover or an inspection port.

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