TWI827428B - Sealed switch box door handle locking structure - Google Patents

Abstract

A sealed switch box door handle locking arrangement structure, including a sealed frame box installed on the door of the switch box. A handle lock control component is provided above the interior of the sealed frame box. The handle lock control component includes a handle, and the handle passes through The handle lock control component controls the opening or closing of the box door; a key lock control component is provided below the inside of the sealed frame box, and the key lock control component is used to lock or open the handle.

Description

Sealed switch box door handle locking structure

The present invention relates to a switch box (or electrical box or distribution box). More specifically, it is a structure in which a key lock is provided on the door handle of the switch box.

The so-called switch box door handle lock mainly refers to the locking structure used for the door of an electrical box or distribution box.

As shown in Figure 1, the handle lock 90 is installed in the preset opening of the door 91. The frame plate 92 of the lock, the button 93 and the spring handle 94 therein are located on the front surface of the door 91. The main body 95 of the lock and its catch The piece 96 is located on the rear side of the door 91 . Pressing the button 93 can cause the spring handle 94 to bounce up. Pulling the spring handle 94 or rotating it at a predetermined angle can cause the lock piece 96 to rotate and disengage from the lock hole (not shown) of the switch box, so that the door can be opened. . On the contrary, press the spring handle 94 that bounces back to the original position, the lock piece 96 is buckled into the lock hole, and the door is locked.

The main body 95 on the rear side of the above-mentioned type of handle lock is of a sealed type (referred to as a sealed switch box door handle lock), and a frame box 951 surrounds and encapsulates the relevant components, with only the shaft 961 and the locking piece 96 extending outward. . The frame box 951 makes the handle lock 90 have good sealing, dustproof, and waterproof effects, but the frame box 951 also limits the internal space of the handle lock 90, making it difficult to install a key lock. Without a key lock, the handle lock may be pressed arbitrarily, creating the risk of the electrical box door being opened arbitrarily.

In order to solve this problem, the previous technology adopted a solution of making the key lock independent of the spring handle. Related previous patents can be found in TWM416927U and TWM389152U. It is also possible to adopt the solution of setting the key lock on the spring handle. For relevant prior art, please refer to TWI360382B. However, these previous technologies require the addition of a key lock, which increases the volume and area of the handle lock.

The present invention is to install a key lock on the above-mentioned sealed switch box door handle lock.

Technical features of the invention:

A sealed switch box door handle locking arrangement structure, including a sealed frame box installed on the door of the switch box. A handle lock control component is provided above the interior of the sealed frame box. The handle lock control component includes a handle, and the handle passes through The handle lock control component controls the opening or closing of the box door; a key lock control component is provided below the inside of the sealed frame box, and the key lock control component is used to lock or open the handle.

Efficacy of the present invention:

Through the key lock control component, the handle can be locked on the box door to prevent the handle from being opened arbitrarily, thereby creating the risk of the electrical box door being opened arbitrarily.

In the present invention, the handle lock control assembly and the key lock control assembly are simultaneously arranged inside a sealed frame box, thereby saving space.

<prior art>

90: handle lock

91:Box door

92: Frame board

93:Button

94:Spring handle

95:Subject

951:Frame box

961:axis

96: Locking piece

<Invention>

10:Border

11: Box door

12: Sealed box

121:Peripheral department

122:Box body

123:Rear box wall

13:Fixed frame

131: Stop attachment department

14: Frame screws

20: Handle lock control assembly

21:Linear shaft

22: handle

30:Key lock control assembly

31:Lock core

32:Keyhole

33:Key

34: Rotating mandrel

35:Lock chip

36: Embedded sides

37:Screw

38:Lock shaft

39:Lock slot

40: riveting fixation

[Figure 1] Appearance view of the prior art sealed switch box door handle lock.

[Figure 2] Front view of the sealed switch box door handle lock of the present invention.

[Figure 3] is an exploded view of Figure 2.

[Figure 4] Rear appearance of the sealed switch box door handle lock of the present invention.

[Fig. 5] Partial three-dimensional rear view of the sealed switch box door handle lock of the present invention.

[Figure 6] is a schematic diagram of the operation of Figure 5.

[Figure 7] Cross-sectional view of the sealed switch box door handle lock of the present invention.

[Figure 8] is a schematic diagram of the operation of Figure 7.

In order to facilitate the explanation of the central idea expressed in the above novel content column of this invention, specific embodiments are hereby expressed. Various objects in the embodiments are drawn according to proportions, sizes, deformations or displacements suitable for illustration, rather than according to the proportions of actual components, and are explained first. In the following description, identical and symmetrically arranged components are represented by the same numbers. The use of directional terms in the following description is based on the direction of view and cannot be interpreted as a limitation on this creation.

As shown in Figures 2 to 4, a frame 10 is installed in a preset opening of a door 11 of an electrical box, and a peripheral portion 121 of a sealed box 12 is fitted into the frame 10. The box of the sealed box 12 is The body 122 is located on the rear side of the door 11 .

A fixed frame 13 is added to the outside of a rear wall 123 of the box body 122. The fixed frame 13 has one stopper portion 131 on the left and right sides to cooperate with the frame 10 and the peripheral portion 121 of the sealed box 12 to secure the door 11 The clip is positioned in between. A box screw 14 passes through the fixed frame 13 and the rear box wall 123 of the box body 122 to position the sealed box 12 on the door 11 .

A handle lock control assembly 20 is disposed above the inside of the box body 122 . The handle lock control assembly 20 is a conventional technology and mainly includes a linkage shaft 21. One end of the linkage shaft 21 pivots on the upper end of the handle 22, and the other end of the linkage shaft 21 is connected to a locking piece (not shown). The handle 22 is in a vertical position When the switch box is turned upward, the locking piece is buckled into the locking hole (not shown) of the switch box, and the box door 11 is locked. On the contrary, if the end of the handle 22 is pulled up to an angle, and then the handle 22 is rotated to a predetermined angle, the lock piece can be urged to rotate and disengage from the lock hole, and the door 11 can be opened.

A key lock control assembly 30 is disposed underneath the box body 122 . The key lock control assembly 30 includes a lock core 31 , a lock chip 35 and a lock shaft 38 .

The lock cylinder 31 is fixed on the lower part of the handle 22 , and the keyhole 32 of the lock cylinder 31 is exposed on the front surface of the handle 22 . A key 33 of the lock cylinder 31 is inserted into the key hole 32 and drives a rotating spindle 34 inside the lock cylinder 31 . The end of the rotating core shaft 34 is locked with a screw 37 to fix the lock chip 35 . The lock chip 35 is eccentrically connected to the rotating core shaft 34 so that an embedded side 36 is formed on the lock chip 35 . The rotating spindle 34 drives the lock chip 35 to rotate synchronously.

The lock shaft 38 is fixed to the rear box wall 123 of the box body 122 and is located adjacent to the lock chip 35. In a preferred embodiment, the lock shaft 38 is coaxially locked with the box screw 14, and more A preferred embodiment is that the shaft end of the lock shaft 38 is further riveted and fixed 40 on the rear box wall 123 of the box body 122. This solution greatly saves the space of the box body 122. The locking shaft 38 is provided with a locking groove 39 radially, and the locking groove 39 allows the embedded side 36 of the lock chip 35 to be inserted into or removed from the locking shaft 38 . Preferably, the locking groove 39 is an annular groove surrounding the locking shaft 38 .

As shown in Figures 5 to 8, the key 33 is inserted into the key hole 32 and rotated in the locking direction. The rotating spindle 34 is driven by the key 33 and urges the lock chip 35 to rotate at a predetermined angle. The embedded side 36 is inserted into the locking groove 39, and the handle 22 is locked. On the contrary, when the key 33 is rotated in the unlocking direction, the rotating spindle 34 urges the lock chip 35 to rotate reversely at a predetermined angle. The embedded side 36 of the lock chip 35 is separated from the lock groove 39 and the handle 22 is unlocked. At this time, the end of the handle 22 can be lifted upward to form an angle, and then the handle 22 can be rotated to activate the locking piece to rotate and disengage. The lock hole allows the door 11 to be opened.

123:Rear box wall

13:Fixed frame

131: Stop attachment department

14: Frame screws

22: handle

30:Key lock control assembly

31:Lock core

33:Key

35:Lock chip

36: Embedded sides

37:Screw

38:Lock shaft

39:Lock slot

Claims (3)

A sealed switch box door handle locking structure includes a sealed frame box installed on a door of a switch box; a frame box screw passes through a fixed frame and the rear box of the box body of the sealed frame box Wall, the sealed frame box is fixed on the door; a handle lock control assembly is provided above the interior of the sealed frame box, the handle lock control assembly includes a handle, and the handle controls the opening of the box door through the handle lock control assembly Or lock; It is characterized in that: a key lock control component is provided at the bottom of the interior of the box, and the key lock control component controls the locking or opening of the handle; the key lock control component includes a lock core, a lock chip and a lock shaft. ; The lock cylinder is fixed to the lower part of the handle, and a key hole of the lock cylinder is exposed on the front surface of the handle. The key hole is for a matching key to pass through; the key drives a rotation inside the lock cylinder The core shaft, the end of the rotating core shaft fixes the lock chip; the lock shaft is coaxially locked with the frame box screw, fixed inside the box body and located adjacent to the lock chip, the lock shaft diameter A lock slot is provided in the direction for an embedded side of the lock chip to be inserted into or left; the embedded side of the lock chip is inserted into the lock slot, and the handle is locked on the door; The embedded side of the lock chip leaves the lock groove, and the handle is unlocked. The sealed switch box door handle locking structure as described in claim 1, wherein the shaft end of the lock shaft is riveted and fixed to the rear box wall of the box body. The sealed switch box door handle locking structure as claimed in claim 1, wherein the lock groove is an annular groove surrounding the lock axis.

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