CN105781265B - A kind of indoor electromagnetic lock - Google Patents

Abstract

The invention discloses an indoor electromagnetic lock, which comprises a shell and a shell cover, the shell cover is closed on the shell, an electromagnetic lock body with a retractable moving iron core is arranged in the shell, and a lock bolt stopper, Lock bolt, spring, switch handle, lock bolt positioning pin, compression spring and the switch connected with the electromagnetic lock body and controlling the power on and off of the electromagnetic lock body, the lock bolt stopper is placed in the housing, and the moving iron core of the electromagnetic lock body is locked Connected to the lock bolt stopper, the lock bolt is fixedly connected to the lock bolt stopper, and one end protrudes out of the housing, one end of the spring abuts on the lock bolt stopper, and the other end abuts against the inner wall of the housing, the lock bolt The positioning pin is connected to the locking bolt stopper, and the bottom end of the locking bolt positioning pin passes through the housing and extends out of the housing. One end of the compression spring abuts on the locking bolt positioning pin, and the other end abuts on the shell cover , the switch handle is rotated and connected to the shell cover, and one end is plugged into the lock bolt block. The electromagnetic lock of the invention is easy to operate, safe and reliable, reasonable in structure and long in service life.

Description

An indoor electromagnetic lock

Technical field:

The invention relates to an indoor electromagnetic lock.

Background technique:

The indoor electromagnetic lock is a locking device for preventing misoperation of electrical appliances indoors. It is suitable for operating mechanisms and locking devices for high-voltage equipment such as indoor fixed high-voltage switchgears, isolating switches and grounding devices for handcart cabinets.

After the existing indoor electromagnetic lock is powered off (or powered on), the moving iron core in the electromagnetic lock breaks away from the lock bolt stopper, and then the electromagnetic lock can be opened and closed by pulling the rotary wrench on the shell cover. After the moving iron core breaks away from the lock bolt stopper, the lock bolt in the electromagnetic lock is movable. There is no structure for limiting the lock bolt in the existing electromagnetic lock. Therefore, when the cabinet door is closed by misoperation, the The door frame will hit the lock bolt and damage the lock bolt, and after the moving iron core on the electromagnetic lock breaks away from the lock bolt stopper, the opening and closing action of the electromagnetic lock becomes simple and easy to operate, which is likely to bring safety hazards.

Therefore, it is necessary to improve the prior art to solve the deficiencies of the prior art.

Invention content:

The present invention provides an indoor electromagnetic lock in order to solve the above-mentioned problems in the prior art.

The technical solutions adopted in the present invention include: an indoor electromagnetic lock, including a shell and a shell cover, the shell cover is closed on the shell, and an electromagnetic lock body with a retractable movable iron core is arranged in the shell, It also includes a lock bolt stopper, a lock bolt, a spring, a switch handle, a lock bolt positioning pin, a compression spring, and a switch connected with the electromagnetic lock body and controlling the power on and off of the electromagnetic lock body, and the lock bolt stopper is placed in the housing , the moving iron core of the electromagnetic lock body is clamped on the lock bolt stopper, the lock bolt is fixedly connected to the lock bolt stopper, and one end extends out of the shell, one end of the spring abuts on the lock bolt stopper, and the other end abuts against the lock bolt stopper On the inner wall of the housing, the locking bolt positioning pin is pierced on the locking bolt stopper, and the bottom end of the locking bolt positioning pin passes through the housing and extends out of the housing, and one end of the compression spring abuts against the locking bolt positioning pin , the other end abuts on the shell cover, the switch handle is rotated and connected to the shell cover, and one end is plugged into the lock bolt stopper.

Further, the locking bolt stopper is provided with a positioning hole and a strip-shaped slot penetrating with the positioning hole, and a limiting rib is provided on the side wall of the strip-shaped slot.

Further, the housing is provided with a circular through hole that communicates with the bar-shaped slot hole, and the lock bolt positioning pin penetrates the lock bolt stopper through the bar-shaped slot hole, and passes through the circular through hole. The hole extends outside the shell.

Further, the lock bolt positioning pin includes a first step, a second step and a third step arranged in the direction of the coaxial line, and the lock bolt positioning pin is clamped to the inner wall of the bar-shaped slot through the second step on the limiting rib in the

Further, the diameter of the positioning hole is larger than the diameter of the second step portion.

Further, the first step portion is provided with a first installation groove for positioning and installing the compression spring.

Further, the lock bolt block is provided with a limit slot, and the moving iron core of the electromagnetic lock body is clamped in the limit slot.

Further, the moving iron core is provided with a limiting boss matching the limiting groove.

Further, a toggle slot is provided on the lockbolt stopper, and a shift lever matching the toggle slot is provided on the switch handle.

Further, the housing cover is provided with a limiting platform, and the limiting platform is provided with an unlocking hole and a second installation groove for positioning and installing the compression spring.

The present invention has following beneficial effect:

1) The lock bolt stopper in the present invention can keep the lock bolt of the electromagnetic lock in the unlocked position or locked position, so that the use of the electromagnetic lock is safer and the service life of the electromagnetic lock can be improved;

2) The electromagnetic lock of the present invention is easy to operate, safe and reliable, reasonable in structure and long in service life.

Description of drawings:

Fig. 1 is the internal structure diagram of the housing in the electromagnetic lock of the present invention.

Fig. 2 is a structural diagram of the housing cover in the electromagnetic lock of the present invention.

Fig. 3 is another structure diagram of the housing cover in the electromagnetic lock of the present invention.

Fig. 4 is a structural diagram of the lock bolt stopper in the electromagnetic lock of the present invention.

Figure 5 is a cross-sectional view of the latch stopper in Figure 4.

Fig. 6 is a structural diagram of the positioning pin of the locking bolt in the electromagnetic lock of the present invention.

Fig. 7 is a structural diagram of the location of the positioning pin on the lock bolt stopper when the electromagnetic lock of the present invention is in the locked position.

Fig. 8 is a structural diagram of the location of the positioning pin on the lock bolt stopper when the electromagnetic lock of the present invention is in the unlocked position.

Fig. 9 is a diagram of the installation structure of the electromagnetic lock of the present invention on the cabinet door.

detailed description:

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, an indoor electromagnetic lock of the present invention includes a housing 1 and a housing cover 2, the housing cover 2 is closed on the housing 1, and a telescopic moving iron is provided in the housing 1. The electromagnetic lock body 12 of the core 11, the operating principle of the electromagnetic lock body 12 in the present invention is the same as that of the electromagnetic lock in the prior art, so the specific structure and principle of the electromagnetic lock body 12 in the present invention are no longer repeated.

Also be provided with lock bolt block 13, lock bolt 14, spring 15, lock bolt positioning pin 3, compression spring 4 and be connected with electromagnetic lock body 12 and control the switch 16 of electromagnetic lock body on-off in housing 1, Lock bolt block 13 is located at the rear side of electromagnetic lock body 12, and the moving iron core 11 of electromagnetic lock body 12 is clamped on the lock bolt block 13, and lock bolt 14 is fixedly connected to the left end of lock bolt block 13, and The left end of the locking bolt 14 passes through the side wall of the housing 1 and protrudes out of the housing 1 . One end of the spring 15 abuts on the lock bolt stopper 13, and the other end abuts on the inner wall of the housing 1, the lock bolt positioning pin 3 passes through the lock bolt stopper 13, and the bottom end of the lock bolt positioning pin 3 Passing through the bottom wall of the housing 1 and extending out of the housing 1 , one end of the compression spring 4 abuts against the lock bolt positioning pin 3 , and the other end abuts against the housing cover 2 .

A switch handle 21 is rotatably connected to the shell cover 2 , and one end of the switch handle 21 is plugged into the latch block 13 .

As shown in FIG. 4 and FIG. 5 , a positioning hole 131 and a bar-shaped slot hole 132 are provided on the lock bolt block 13 , and the positioning hole 131 and the bar-shaped slot hole 132 are connected. Limiting ribs 133 are provided on the front and rear inner walls of the strip-shaped slot 132 , and a sliding gap is formed between the two limiting ribs 133 , and the width of the sliding gap is b, as shown in FIG. 4 .

As shown in FIG. 6 , the locking bolt positioning pin 3 in the present invention includes a first stepped portion 31 , a second stepped portion 32 and a third stepped portion 33 arranged in the direction of the coaxial line. The diameter of the third step portion 33 in the lock bolt positioning pin 3 is smaller than the width of the sliding gap in the bar-shaped slot 132 on the lock bolt stopper 13 , and the diameter of the second step portion 32 is larger than the width of the above-mentioned sliding gap. The locking bolt positioning pin 3 is clamped on the limiting rib 133 in the inner wall of the bar-shaped slot hole 132 through the second step portion 32 . The diameter of the positioning hole 131 on the lock stopper 13 is larger than the diameter of the second step portion 32 .

A circular through hole 100 is provided on the bottom surface of the housing 1, and the circular through hole 100 communicates with the bar-shaped slot 132 on the lock bolt stopper 13, and the lock bolt positioning pin 3 passes through the bar-shaped slot 132 in the On the lock bolt stopper 13 , and extend out of the housing 1 through the circular through hole 100 .

When the electromagnetic lock is opened, the lock bolt block 13 drives the lock bolt 14 to move to the right. When the positioning hole 131 on the lock bolt stopper 13 is connected with the circular through hole 100 at the bottom of the housing 1, the lock bolt positioning pin 3 is under the action of the elastic force of the compression spring 4, and the second step of the lock bolt positioning pin 3 The portion 32 slides down into the positioning hole 131 of the lock bolt stopper 13, and at this time the lock bolt 14 is automatically locked in the unlocked position. If the lock bolt 14 does not reach the unlocked position, the lock bolt 14 will automatically return to the locked position under the action of the spring 15, thereby realizing the "automatic reset" function.

In the present invention, in order to ensure that the spring 15 can expand and contract smoothly, a guide rod 17 is fixedly connected to the right end of the lock bolt stopper 13. The right end of the guide rod 17 passes outside the housing 1, and the spring 15 is sleeved on the guide rod 17.

In order to better clamp the compression spring 4 between the lock bolt positioning pin 3 and the case cover 2, the first step portion 31 of the lock bolt positioning pin 3 is provided with a second step for positioning and installing the compression spring 4. a mounting slot (not shown in the figure). A limiting platform 23 is provided on the housing cover 2 , and the limiting platform 23 is used for positioning and installing the second installation groove 231 of the compression spring 4 .

An unlocking hole 230 is provided on the limiting platform 23 , and the unlocking hole 230 extends to the case cover 2 for insertion of a key.

A toggle slot 137 is provided on the lock bolt block 13 , and correspondingly, a shift lever 22 matching the toggle slot 137 is provided on the switch handle 21 . When opening the electromagnetic lock, turn the switch handle 21 according to the unlocking direction marked on the shell cover 2, so that the lock bolt stopper 13 drives the lock bolt 14 to move to the right. If the switch handle 21 is not rotated in the unlocking direction marked on the shell cover 2 (that is, opposite to the above-mentioned unlocking rotation direction), the limiting platform 23 interferes with the rotation of the switch handle 21 at this time.

In order to better clamp the moving iron core 11 of the electromagnetic lock body 12 on the lockbolt stopper 13, the side wall of the lockbolt stopper 13 is provided with a limiting groove 136, corresponding to it, when moving The iron core 11 is provided with a limiting boss 11 matching the limiting groove 136 .

As shown in Figure 7 and Figure 8, the operating steps of the electromagnetic lock of the present invention are as follows:

(1) Normal operation steps:

a: Press the button, the power is turned on, and the coil on the electromagnetic lock body 12 is powered, so that the moving iron core 11 breaks away from the limit slot 136 on the lock bolt stopper 13 .

b: Turn the switch handle 21 in the direction of unlocking, the switch handle 21 will drive the lock bolt stopper 13 to slide rightward in the housing 1, when the positioning hole 131 on the lock bolt stopper 13 is aligned with the circular through hole 100 at the bottom of the housing 1 When passing through, the second step portion 32 of the lock bolt positioning pin 3 slides down into the positioning hole 131 of the lock bolt stopper 13, and now the lock bolt 14 is automatically locked in the unlocked position (as shown in Figure 8), and the cabinet door can be opened. If the lock bolt 14 does not reach the above-mentioned unlocked position, the lock bolt 14 automatically returns to the locked position (as shown in FIG. 7 ) under the action of the spring 15, thereby realizing the "automatic reset" function.

c: After the cabinet door is opened, the lock bolt 14 is locked at the above-mentioned unlocked position. If the cabinet door is closed, in the process of closing the cabinet door, the third step 33 of the positioning pin 3 is bumped by the door frame 8, so that the second step 32 of the positioning pin 3 breaks away from the positioning hole 131 of the lock bolt stopper 13, and the lock bolt 14 Return to the locked position to achieve the locked state, as shown in Figure 9.

(2) Manual unlock steps:

Disconnect the power supply, take the unlocking key, insert it into the unlocking hole 230 on the shell cover 2, turn the key, and push the moving iron core 11 away from the lock stopper 13; operate according to step b in the above normal operation steps to meet the " Manual unlock" function.

The unlocking process of the unlocking key is to push the moving iron core 11 away from the lock bolt stopper 13 to release the locked state. To unlock the lock, the lock bolt stopper 13 must be moved by turning the switch handle 21 to achieve the purpose of unlocking, so it cannot be used The unlock key unlocks directly.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, some improvements can also be made without departing from the principle of the present invention, and these improvements should also be regarded as the invention. protected range.

Claims (8)

1. a kind of indoor electromagnetic lock, including housing（1）And cap（2）, the cap（2）Cover in housing（1）On, in housing （1）Interior be provided with has scalable dynamic iron core（11）Electromagnetic lock (12), it is characterised in that：Also include locking bolt block（13）, lock Bolt（14）, spring（15）, switch knob（21）, locking bolt shop bolt（3）, holddown spring（4）And with Electromagnetic lock (12) phase Connect and control the switch of Electromagnetic lock power on/off（16）, the locking bolt block（13）It is placed in housing（1）It is interior, Electromagnetic lock (12) Dynamic iron core（11）It is connected in locking bolt block（13）On, locking bolt（14）It is fixedly connected on locking bolt block（13）On, and one end is stretched out Housing（1）Outside, spring（15）One end is connected to locking bolt block（13）On, the other end is connected to housing（1）Inwall on, locking bolt is fixed Position pin（3）It is connected to locking bolt block（13）On, and locking bolt shop bolt（3）Bottom pass through housing（1）And stretch in housing（1） Outside, holddown spring（4）One end is connected to locking bolt shop bolt（3）On, the other end is connected to cap（2）On, switch knob（21） It is rotatablely connected cap（2）On, and one end is plugged in locking bolt block（13）On；

The locking bolt block（13）It is provided with positioning hole（131）And and positioning hole（131）The bar shape trench hole to connect（132）, The bar shape trench hole（132）Side wall be provided with limit rib（133）；

The locking bolt block（13）It is provided with stopper slot（136）, the dynamic iron core of the Electromagnetic lock (12)（11）It is connected in the limit Position groove（136）It is interior.

2. indoor electromagnetic lock as claimed in claim 1, it is characterised in that：The housing（1）It is provided with and the bar shape trench hole （132）The manhole to connect（100）, the locking bolt shop bolt（3）Pass through bar shape trench hole（132）It is connected to locking bolt block （13）On, and pass through manhole（100）Stretch in housing（1）Outside.

3. indoor electromagnetic lock as claimed in claim 1, it is characterised in that：The locking bolt shop bolt（3）Including coaxial line side To the first step portion of setting（31）, second step portion（32）And the 3rd stage portion（33）, the locking bolt shop bolt（3）It is logical Cross second step portion（32）It is connected in bar shape trench hole（132）Limit rib in inwall（133）On.

4. indoor electromagnetic lock as claimed in claim 3, it is characterised in that：The positioning hole（131）Aperture be more than second Rank portion（32）Diameter.

5. indoor electromagnetic lock as claimed in claim 3, it is characterised in that：The first step portion（31）It is provided with and is used to position Holddown spring is installed（4）The first mounting groove.

6. indoor electromagnetic lock as claimed in claim 1, it is characterised in that：The dynamic iron core（11）It is provided with and the stopper slot （136）The positive stop lug boss being adapted（111）.

7. indoor electromagnetic lock as claimed in claim 1, it is characterised in that：The locking bolt block（13）It is provided with and stirs groove （137）, the switch knob（21）It is provided with and stirs groove with this（137）The driving lever being adapted（22）.

8. indoor electromagnetic lock as claimed in claim 1, it is characterised in that：The cap（2）It is provided with limiting stand（23）, the limit Position platform（23）It is provided with open keyhole（230）With for location and installation holddown spring（4）The second mounting groove（231）.