Emergency forced triggering tool for contact of air-conditioner air switch of motor train unit

Abstract

The utility model discloses a forced triggering tool for emergency use of a contact of an air conditioner air switch of a motor train unit, which comprises a triggering block, the triggering block is of a cuboid structure, one end of the triggering block in the extension direction is provided with a hook part, the other end of the triggering block is provided with a placing part, the hook part is provided with a clamping boss, and the clamping boss is arranged on one side of the top end surface of the triggering block. An external stopping block is arranged on the bottom end face of the triggering block, second tooth-shaped edges are arranged on the end faces of the two sides of the triggering block, the extending direction of the second tooth-shaped edges is perpendicular to the extending direction of the triggering block, and the forced triggering tool for emergency of the air conditioner air switch contact of the motor train unit is made of a non-conductive material; according to the utility model, the clamping boss of the hook part is matched with the air switch backstop, the external backstop block is further matched and positioned with the air switch outer frame, the air switch contact is pressed inwards, and the second tooth-shaped edge is matched with the friction force of the air switch outer frame, so that the effect that the contact is fixed and does not rebound is achieved; and stable pressing triggering of the contact is completed.

Description

Technical Field

[0001] This utility model relates to the field of EMU air conditioning maintenance technology, specifically to a forced triggering tool for emergency contact of EMU air conditioning circuit breaker. Background Technology

[0002] When an air conditioning circuit breaker experiences an intermittent malfunction that causes the contacts to become non-conductive, in order to ensure the passenger experience, after confirming the specific line's air conditioning contact problem, the onboard staff will use chopsticks or other tools that can be inserted into the air conditioning contact holes to force the contacts to close and maintain air conditioning operation.

[0003] The existing forced triggering method for air conditioning circuit breakers has several problems: First, the size and shape of the triggering contact tools lack clear standards, leading to arbitrary contact action and a low success rate. Second, since the air conditioning circuit breaker itself is electrified, using tools such as chopsticks to trigger the contacts when they fail to engage poses a safety hazard. Third, improper operation of the existing triggering tools, without considering the contact triggering limits, can damage the circuit breaker; excessive force can cause contact failure. All these problems may lead to ineffective emergency handling of air conditioning malfunctions, and in severe cases, disrupt passenger transport order.

[0004] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Utility Model Content

[0005] To address the aforementioned technical deficiencies, this utility model provides a forced triggering fixture for emergency use of air conditioning circuit breaker contacts in high-speed trains. The fixture includes a trigger block, which is a cuboid structure. One end of the trigger block has a hook portion, and the other end has a placement portion. The hook portion has a locking protrusion for locking and positioning with the circuit breaker stop. The locking protrusion is located on one side of the top surface of the trigger block. An external stop block is located on the bottom surface of the trigger block for locking and positioning with the outer frame of the circuit breaker. Both end faces of the trigger block have second toothed ridges, the extension direction of which is perpendicular to the extension direction of the trigger block. These second toothed ridges provide frictional limiting with the outer frame of the circuit breaker. The forced triggering fixture for emergency use of air conditioning circuit breaker contacts in high-speed trains is made of a non-conductive material.

[0006] Preferably, the hook portion includes two hook blocks, which are symmetrically arranged on the end of the trigger block. The hook blocks extend along the extension direction of the trigger block, and a snap-fit ​​block is vertically arranged at the end of the hook block away from the trigger block. The snap-fit ​​block and the hook blocks form the snap-fit ​​boss, and the snap-fit ​​block is arranged on one side of the bottom end face of the trigger block.

[0007] Preferably, a mating groove is formed between the two hook blocks, and the mating groove is configured to cooperate with the circuit breaker contact.

[0008] Preferably, the placement part is configured as a cuboid structure, the placement part and the trigger block extend along the same axis, and the rectangular cross-sectional dimension of the placement part is larger than the rectangular cross-sectional dimension of the trigger block.

[0009] Preferably, the placement portion is connected to the trigger block via a transition section, the cross-section of which gradually increases in size along the extension direction of the trigger block.

[0010] Preferably, the placement part is provided with a placement hole for placing the hook.

[0011] Preferably, the placement hole is an elliptical through hole with a minor semi-axis radius of 2.5 mm and a major semi-axis radius of 5 mm.

[0012] Preferably, the placement part has a rectangular cross-section of 12mm*7mm.

[0013] Preferably, the second toothed ridge is provided with a first toothed ridge on the side near the placement portion, and the second toothed ridge is provided with a third toothed ridge on the side near the hook portion. The first toothed ridge, the second toothed ridge, and the third toothed ridge are all arranged in parallel, and the tooth height of the first toothed ridge, the second toothed ridge, and the third toothed ridge gradually increases.

[0014] Preferably, the center distance between the second toothed edge and the first toothed edge is 0.8 mm, the center distance between the second toothed edge and the third toothed edge is 1.3 mm, and the tooth heights of the first toothed edge, the second toothed edge, and the third toothed edge are 0.15 mm, 0.17 mm, and 0.2 mm, respectively.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses the snap-fit ​​protrusion of the hook part to cooperate with the circuit breaker stop, and further uses the external stop block to cooperate with the circuit breaker outer frame for positioning, so that the circuit breaker contact is passively pressed inward, and the second toothed ridge cooperates with the friction of the circuit breaker outer frame to achieve the effect of fixing the contact without rebounding, thus completing the stable pressing and triggering of the contact. Attached Figure Description

[0016] Figure 1 This is a front view of the structure of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the high-speed train.

[0017] Figure 2 A three-dimensional structural view of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the high-speed train;

[0018] Figure 3 An external schematic diagram showing the working state of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the EMU.

[0019] Figure 4 This is an internal schematic diagram showing the working state of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the EMU.

[0020] The numbers in the diagram represent:

[0021] 1-Trigger block; 2-Hook part; 3-Placement part; 4-External stop block; 5-Second toothed ridge; 6-Outer frame of circuit breaker; 7-Circuit breaker stop; 8-Matching groove; 9-Transition section; 10-Placement hole; 11-First toothed ridge; 12-Third toothed ridge; 13-Trigger groove. Detailed Implementation

[0022] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] like Figures 1 to 4 As shown, Figure 1 This is a front view of the structure of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the high-speed train. Figure 2 A three-dimensional structural view of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the high-speed train; Figure 3 An external schematic diagram showing the working state of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the EMU. Figure 4 This is an internal schematic diagram showing the working state of the emergency forced triggering fixture for the air conditioning circuit breaker contacts of the EMU.

[0025] The present invention relates to a forced triggering fixture for emergency use of air conditioning circuit breaker contacts in high-speed trains, comprising a trigger block 1, which is a cuboid structure. One end of the trigger block 1 has a hook portion 2, and the other end has a placement portion 3. The hook portion 2 has a locking protrusion for engaging with the circuit breaker stop for positioning. The locking protrusion is located on one side of the top surface of the trigger block 1. An external stop block 4 is located on the bottom surface of the trigger block 1 for engaging with the outer frame of the circuit breaker. Both end faces of the trigger block 1 have second toothed ridges 5, the extension direction of which is perpendicular to the extension direction of the trigger block 1. The second toothed ridges 5 are used for frictional limiting with the outer frame of the circuit breaker. The forced triggering fixture for emergency use of air conditioning circuit breaker contacts in high-speed trains is made of a non-conductive material.

[0026] Specifically, the EMU air conditioner is equipped with an outer frame 6 for the circuit breaker, a stop 7 for the circuit breaker, and circuit breaker contacts. The outer frame 6 for the circuit breaker is provided with a trigger groove 13. The stop 7 for the circuit breaker is located inside the outer frame 6 for the circuit breaker, and the circuit breaker contacts are located below the stop 7 for the circuit breaker. This utility model inserts into the trigger groove 13 and presses the circuit breaker contacts to form a trigger contact operation. The circuit breaker contacts are positioned by the snap-fit ​​between the snap-fit ​​boss and the stop 7 for snap-fit, ensuring that the circuit breaker contacts are always in a stable trigger state.

[0027] The engaging protrusion on the hook portion 2 is inserted into the bottom of the circuit breaker stop 7, and the circuit breaker stop 7 and the engaging protrusion are engaged to fix the position between the trigger block 1 and the circuit breaker stop 7. The second toothed ridge 5 engages with the two side edges of the trigger groove 13, thereby achieving the engaging and fixing of the present invention in the trigger groove 13. The hook portion 2 presses the contact point to form the trigger contact operation. The outer stop block 4 engages with the bottom edge of the trigger groove 13 to limit the insertion depth of the trigger block 1 and avoid damage to the circuit breaker contact due to excessive insertion.

[0028] Preferably, the hook portion 2 includes two hook blocks symmetrically arranged on the end of the trigger block 1. The hook blocks extend along the extending direction of the trigger block 1, and each hook block has a locking block vertically arranged at its end away from the trigger block 1, thus forming an L-shaped structure. The locking block and the hook blocks form the locking protrusion, and the locking block is disposed on one side of the bottom end face of the trigger block 1. The two hook blocks are respectively the first hook block and the second hook block.

[0029] Preferably, a mating groove 8 is formed between the two hook blocks for mating with the circuit breaker contact.

[0030] This utility model uses the snap-fit ​​protrusion of the hook part 2 to cooperate with the circuit breaker stop 7, and further uses the external stop block 4 to cooperate with the circuit breaker outer frame 6 for positioning, so that the circuit breaker contact is passively pressed inward, and the second toothed ridge 5 cooperates with the friction of the circuit breaker outer frame 6 to achieve the effect of fixing the contact and preventing it from springing back, thus completing the stable pressing and triggering of the contact.

[0031] The contact triggering fixture designed through on-site testing and analysis improves the success rate of emergency operations. At the same time, the use of non-conductive injection molding material in the shape and structure effectively avoids the risk of electric shock and achieves the effect of rapid mass production.

[0032] Example 2

[0033] The placement part 3 is configured as a cuboid structure. The placement part 3 and the trigger block 1 extend along the same axis, and the rectangular cross-sectional dimension of the placement part 3 is larger than that of the trigger block 1, so that the operator can easily insert and snap the trigger block 1 by pinching the placement part 3.

[0034] Generally, the placement part 3 is connected to the trigger block 1 through a transition section 9. The cross-section of the transition section 9 gradually increases in size along the extension direction of the trigger block 1, thereby realizing the transition between the placement part 3 and the trigger block 1 and ensuring the connection strength between the placement part 3 and the trigger block 1.

[0035] The placement part 3 is provided with a placement hole 10, which is used to hook the present invention onto items such as key rings, so as to facilitate the placement of the present invention.

[0036] Generally, the placement hole 10 is an elliptical through hole with a minor half-axis radius of 2.5 mm and a major half-axis radius of 5 mm. The elliptical concave hole also facilitates the placement of the operator's fingers, enabling stable gripping of the placement part 3.

[0037] The placement part 3 has a rectangular cross-section of 12mm*7mm, which facilitates vertical placement on a table.

[0038] Preferably, the overall length of the emergency forced triggering fixture for the air conditioning circuit breaker contact of the EMU is 34.5mm, the distance between the center of the tooth of the second toothed ridge 5 and the end of the hook portion 2 away from the trigger block 1 is 9mm, and the distance between the external stop block 4 and the end of the hook portion 2 away from the trigger block 1 is 8.4mm; the outer surface of the circuit breaker outer frame 6 cooperates with the external stop block 4 to set the depth limit of the forced triggering fixture's trigger contact action, and the second toothed ridge 5 is set corresponding to the external stop block 4 to ensure that the second toothed ridge 5 and the external stop block 4 simultaneously engage with the circuit breaker outer frame 6.

[0039] Generally, the center distance between the two hook blocks is 5.4mm, and the dimensions of the mating groove 8 are 12mm*7mm*4.6mm, in order to match the circuit breaker contact.

[0040] The distance between the locking plane of the circuit breaker stop 7 and the hook block and the inner surface of the circuit breaker outer frame 6 is 3mm, ensuring that the locking boss cooperates with the circuit breaker stop 7 and that the outer stop block 4 is positioned in conjunction with the circuit breaker outer frame 6.

[0041] Preferably, the second toothed ridge 5 is provided with a first toothed ridge 11 on the side near the placement part 3, and the second toothed ridge 5 is provided with a third toothed ridge 12 on the side near the hook part 2. The first toothed ridge 11, the second toothed ridge 5 and the third toothed ridge 12 are all arranged in parallel, and the tooth height of the first toothed ridge 11, the second toothed ridge 5 and the third toothed ridge gradually increases, thereby improving the frictional positioning between the side of the trigger block 1 and the open outer frame 6.

[0042] Specifically, the center distance between the second toothed edge 5 and the first toothed edge 11 is 0.8 mm, the center distance between the second toothed edge 5 and the third toothed edge 12 is 1.3 mm, and the tooth heights of the first toothed edge 11, the second toothed edge 5 and the third toothed edge 12 are 0.15 mm, 0.17 mm and 0.2 mm, respectively.

[0043] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A forced triggering tooling for emergency contact of air conditioning circuit breaker in high-speed trains, characterized in that, The device includes a trigger block, which is a cuboid structure. One end of the trigger block has a hook portion, and the other end has a placement portion. The hook portion has a locking protrusion for locking and positioning with the circuit breaker stop. The locking protrusion is located on one side of the top surface of the trigger block. An external stop block is located on the bottom surface of the trigger block for locking and positioning with the circuit breaker outer frame. Both end faces of the trigger block have second toothed ridges, the extension direction of which is perpendicular to the extension direction of the trigger block. These second toothed ridges are used for frictional limiting with the circuit breaker outer frame. The emergency forced triggering fixture for the air conditioning circuit breaker contacts of the high-speed train is made of a non-conductive material.

2. The emergency forced triggering fixture for the circuit breaker contacts of the EMU air conditioning unit as described in claim 1, characterized in that, The hook portion includes two hook blocks, which are symmetrically arranged on the end of the trigger block. The hook blocks extend along the extension direction of the trigger block, and a snap-fit ​​block is vertically arranged at the end of the hook block away from the trigger block. The snap-fit ​​block and the hook block form the snap-fit ​​boss, and the snap-fit ​​block is arranged on one side of the bottom end face of the trigger block.

3. The emergency forced triggering fixture for the circuit breaker contacts of the EMU air conditioning unit as described in claim 2, characterized in that, A mating groove is formed between the two hook blocks, and the mating groove is configured to cooperate with the circuit breaker contact.

4. The emergency forced triggering fixture for the circuit breaker contact of the EMU air conditioning unit as described in claim 1, characterized in that, The placement part is configured as a cuboid structure, the placement part and the trigger block extend along the same axis, and the rectangular cross-sectional dimension of the placement part is larger than the rectangular cross-sectional dimension of the trigger block.

5. The emergency forced triggering fixture for the circuit breaker contact of the EMU air conditioning unit as described in claim 4, characterized in that, The placement part is connected to the trigger block via a transition section, and the cross-section of the transition section gradually increases in size along the extension direction of the trigger block.

6. The emergency forced triggering fixture for the circuit breaker contact of the EMU air conditioning unit as described in claim 4, characterized in that, The placement part is provided with a placement hole for placing the hook.

7. The emergency forced triggering fixture for the circuit breaker contact of the EMU air conditioning unit as described in claim 6, characterized in that, The placement hole is an elliptical through hole with a minor semi-axis radius of 2.5 mm and a major semi-axis radius of 5 mm.

8. The emergency forced triggering fixture for the circuit breaker contact of the EMU air conditioning unit as described in claim 4, characterized in that, The placement part has a rectangular cross-section of 12mm*7mm.

9. The emergency forced triggering fixture for the circuit breaker contact of the EMU air conditioning unit as described in claim 1, characterized in that, The second toothed ridge has a first toothed ridge on the side near the placement part, and the second toothed ridge has a third toothed ridge on the side near the hook part. The first toothed ridge, the second toothed ridge, and the third toothed ridge are all arranged in parallel, and the tooth height of the first toothed ridge, the second toothed ridge, and the third toothed ridge gradually increases.

10. The emergency forced triggering fixture for the circuit breaker contact of the EMU air conditioning unit as described in claim 9, characterized in that, The center distance between the second toothed edge and the first toothed edge is 0.8 mm, the center distance between the second toothed edge and the third toothed edge is 1.3 mm, and the tooth heights of the first toothed edge, the second toothed edge, and the third toothed edge are 0.15 mm, 0.17 mm, and 0.2 mm, respectively.

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