CN208955384U - A kind of carbon brush holder of diaphragm pump - Google Patents

Abstract

A kind of brush holder for motor.The brush box top of this brush holder is provided with one group of limiting device, and limiting device uses the construction at right angle on the inside of the fillet of outside, facilitates the loading of the lead-out wire of carbon brush；The interval of limiting device is less than the extraction linear diameter of carbon brush, can effectively prevent escaping from for carbon brush lead-out wire.Such structure setting, carbon brush can be limited in carbon brush holder when installing carbon brush, prevent carbon brush from popping up carbon brush holder under the action of the spring, convenient for the installation of carbon brush, simultaneously carbon brush abrasion arrive preset home when, limitation carbon brush continue contacted with commutator, motor can not operate normally, damage commutator is avoided, while user being reminded to replace carbon brush.

Description

A kind of carbon brush holder of diaphragm pump

Technical field

The utility model relates to water purifier diaphragm pump technical fields, more particularly on diaphragm pump carbon brush holder limit Structure.

Background technique

The effect of current carbon brush holder is mainly positioned to carbon brush.Under the pressure that the spring that carbon brush connects on carbon brush generates, It is slidably contacted the surfaces with commutator or collector ring, carbon brush is made steadily to conduct electric current between fixed body and rotary body.It is installing When, carbon brush can pop up carbon brush holder under spring pressure, cause a degree of influence to installation.When carbon brush is using certain time Afterwards, carbon brush passes through the friction with commutator and is lost.After carbon brush loss finishes, spring on carbon brush will directly with commutation Device or collector ring are in contact, and such as replace not in time, can damage commutator or collector ring.

Summary of the invention

In order to the installation convenient for carbon brush and carbon brush holder, and it can find that carbon brush has been lost to finish in time and need replacing, this Utility model provides a kind of carbon brush holder of diaphragm pump, which can limit carbon brush when carbon brush is installed and be hit by a bullet from carbon brush holder Out, while after carbon brush is lost to a certain extent, prevent the pressure that spring generates is from enabling carbon brush and commutator or collector ring straight Contact, to interrupt current of electric circuit, cause machine can not normal use, to remind user's inspection machine situation, Replace carbon brush.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of carbon brush for electric tool frame, carbon brush One card slot is arranged at the brush box top of frame, and two pieces of symmetrical protrusions are provided in the card slot.Setting protrusion after, installation carbon brush and When carbon brush holder, the carbon brush can be limited in carbon brush holder by the protrusion, in order to avoid carbon brush holder is popped up under spring pressure effect.

In above-mentioned technical proposal, it is preferred that the protrusion is to use the form at right angle on the inside of the fillet of outside.

In above-mentioned technical proposal, it is preferred that the distance between described protrusion is less than brush and draws linear diameter.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the top view of brush holder.

Fig. 2 is the cross-sectional view of brush holder.

1. protrusion in figure, 2. carbon brush lead-out wires, 3. brush boxs, 4. springs, 5. carbon brush, 6. card slots, 31. first protrusions, 51 the Two protrusions.

Specific embodiment

Referring to Fig. 1 to 2, the brush holder of limiting device, including brush box 3 have a card slot 6 at the top of brush box 3, in the card slot 6 Two pieces of symmetrical protrusions 1 are provided with, described raised 1 is T-shaped with 6 edge of card slot, and is the knot at right angle on the inside of the fillet of outside Structure, described raised the distance between 1 is slightly less than the diameter 2 of carbon brush lead-out wire.After setting protrusion 1, in installation carbon brush 5 and carbon brush holder When, the lead-out wire 2 of carbon brush is inwardly firmly squeezed into the card slot by outside, because raised 1 distance is less than the extraction Line 2, the lead-out wire 2 can not deviate from brush box 3 from raised 1 position, and the carbon brush 5 is limited in brush-box 3.In this way Setting, the related accessories such as carbon brush 5 are all an entirety with carbon brush holder when installing carbon brush 5, install, reduce convenient for the carbon brush 5 Installation trouble.One end end that 3 inner wall of brush box is in contact with spring 4 is provided with the first protrusion 31, and carbon brush 5 protrudes into the brush box 3 one end end is provided with the second protrusion, and first protrusion 31 and second protrusion are inserted in the both ends of the spring 4 respectively In 51.

The carbon brush 5 is by using, and when may wear to scheduled home, the raised 1 limitation carbon brush 5 is in bullet Spring 4 continues to pop up under acting on, so that the connection of the carbon brush 5 and commutator or collector ring disconnects, motor can not be transported normally Turn.Such setting can effectively avoid because the excessive wear of the carbon brush 5 damages commutator or collector ring, to protect motor Service life, while can effectively remind user replace carbon brush 5 fall.

Claims (2)

1. a kind of diaphragm pump carbon brush holder, a card slot is arranged at the brush box top of carbon brush holder, and carbon brush protrudes into the brush box, and carbon brush draws The card slot is stretched out in outlet, and the lead-out wire of carbon brush is located at the inside of protrusion, it is characterized in that: be provided in the card slot two pieces it is convex It rises, the distance between described protrusion is less than brush and draws linear diameter.

2. diaphragm pump carbon brush holder according to claim 1, it is characterized in that: the protrusion is straight on the inside of the fillet of outside to use The form at angle.