CN106583793A - Depth gauge device on electric hand drill - Google Patents

Abstract

The invention discloses a depth gauge device on an electric hand drill, and belongs to the field of electric tools. By means of the depth gauge device, the retraction length of a gauge rod can be directly read out conveniently. The depth gauge device comprises a rectangular base plate and the long-strip-shaped square-column-shaped gauge rod, a gauge shaft is arranged on the base plate, a gauge disc and a spring are arranged on the gauge shaft in a penetrating and sleeving manner, a push-and-pull rod rides the gauge disc in a sleeving manner and is pivoted with the gauge shaft, a punching opening is machined in the outer end of the push-and-pull rod, and an elastic sheet is arranged on the upper bottom of the punching opening; the gauge rod penetrates the gauge rod, the left face and the right face of the gauge rod are extruded through the elasticity of the elastic sheet and the lower bottom of the punching opening, and a gauge nose movably penetrates the gauge rod to be fixedly connected with the base plate; meanwhile, the right face of the gauge rod is also in tangency with the circumference of the gauge disc, and fine lines are machined on the contact faces; and a cylindrical lower stop rod and a cylindrical upper stop rod are arranged at the position, at the lower edge of the outer end of the push-and-pull rod, of the base plate and the position, nearby the left side of the gauge rod, of the base plate correspondingly, and a gauge cover which covers the gauge disc and is provided with a display window is arranged on the gauge shaft. The depth gauge device is suitable for the electric hand drill.

Description

Depth indicator device on electric hand drill

Technical field

The present invention is relevant with electric tool, specifically refers to the depth indicator device on a kind of electric hand drill.

Background technology

Electric hand drill is a kind of conventional drilling tools of Work places such as construction processing maintenance, in order that the depth of punched hole Degree will appreciate that and control that people addition of the measurement apparatus comprising an elongated rod shape chi bar on electric hand drill, and chi bar is parallel to brill The axial direction of head, chi bar can lean on operation mat its pole socket for being relied on of staff to carry out longitudinal turnover telescopic moving, specific to use Method is usually so：People can the good drill bit of matching device first, at this moment the extension elongation of drill bit secure, be then used by Person can hold electric hand drill on the other hand and on the other hand pinch chi bar or the operation of into or out and make its external end head matched in apex point, such as require that drilling is deep Spend and then operate chi bar to step back 3cm for 3cm, i.e., chi bar it is matched in apex point when chi bar have a length value to treat relative to its pole socket Chi bar stops stepping back for chi bar after stepping back to the drilling depth size for requiring, now, chi bar outer end be front end according to apex point away from From size with a distance from deep requirement is namely bored, drilling operation starts rear drill bit and pierces workpiece until the front end of chi bar touches and hole Mouthful with surface of the work, be so achieved that the punch operation process of whole depthkeeping, in this process, chi bar sign hole depth The mode of size is the numerical difference before and after guiding ruler bar steps back movement（Increase and decrease amount）Come what is calculated, that is, need to remember chi bar first Then calculate the chi bar after meeting depth size steps back size to the chi bar numerical value of fixed point during matched apex point, than Such as, the chi pole length sign that pole socket edge is indicated in when matched is 18cm, and chi bar will be operated if it will bore deep 3cm to step back At 15cm, this process is seemed and uncomplicated but because feeling of must involving that a mathematical calculation gives people remains not simple enough Understand, the numeral on chi bar is less, numerical value is reserved for an adjustment sometimes and will could be adjusted near observing conscientiously try to figure out for a moment Section end of operation, therefore, a kind of electric hand drill depth indicator device that people can be helped more intuitively to observe control should be people ten Divide what is needed.

The content of the invention

The purpose of the present invention is to provide the depth indicator device on a kind of electric hand drill, and it can solve aforesaid problem.

The content of technical solution of the present invention is as follows：The square column type chi bar of its base plate comprising rectangle and strip, the bottom Plate is fixedly installed a cylinder thing i.e. table axle in the side that its front center is kept right, and the dial plate of circular strip numeral sign passes through Its center wears on table axle the connection of activity, and a helical form clockwork spring is in lax shape device in dial plate centre and by clockwork spring Interior external end head blocks a column of the other lash to table axle and on dial plate respectively and hangs in stake；The push-pull bar of one shape such as U-shaped is from dial plate Lower left side starts to ride its both sides centre and the table axle pivot joint for being set on the positive back side of dial plate and stretching to dial plate, in push-pull bar Outer end be then machined with lateral penetration wear mouth and on the upper bottom for wear mouth, the flexible power bullet of device is to the shell fragment that mouth is gone to the bottom is worn, front The chi bar stated is in penetrating in mouth and being pressed against which by shell fragment and the elasticity of going to the bottom for wearing mouth parallel to base plate side directions shape Left and right two sides, two chi intranasal for being installed on the upper and lower edge position of base plate respectively are installed with chi bar and can allow the work up and down of chi bar It is dynamic, meanwhile, the right side of chi bar is also tangent with the circumference of dial plate and is all machined with microgroove on the contact surface；In push-pull bar outer end lower edge On the base plate in table axle just to direction near on the base plate at position and on the left of the chi bar respectively device have cylindricality lower stop lever, Upper pin, on table axle, returning apparatus one cover the table cover containing display window of dial plate.

The invention has the beneficial effects as follows：Can directly read what the retracted length of chi bar set on the display window of table cover Drilling depth and without the need for take up one's energy again go observe slide rule bar on length value sign.

Description of the drawings：

Fig. 1 is a kind of front view of state of the design（It is to make schematic diagram when chi bar forward extends out operation matched with apex point, this When, push-pull bar is taken away original position while chi bar is also pushed away departing from the contact with dial plate by a push-pull bar left side by chi bar）.

Fig. 2 is a kind of front view of state of the design（Be make chi bar backward retraction operation when schematic diagram, now, push-and-pull Bar is driven by chi bar keeps in the center while chi bar has also been recovered the contact with dial plate by the right drawing of push-pull bar）.

Fig. 3 is a kind of front view of the design（Only object line shows）.

Fig. 4 is the applicating example schematic diagram that the design is installed on electric hand drill.

In each figure, 1 is chi bar, and 2 is chi nose, and 3 is base plate, and 4 are numeral sign, and 5 is dial plate, and 6 is clockwork spring, and 7 is table axle, 8 To hang stake, 9 is lower stop lever, and 10 is push-pull bar, and 11 is shell fragment, and 12 is upper pin, and 13 to wear mouth, and 14 is electric hand drill, and 15 is depth Chi device, 16 is table cover, and 17 is display window.

Specific embodiment：

Below in conjunction with the accompanying drawings the design is described further.

As shown in Figure 1, Figure 2, Figure 3 shows, the square column type chi bar 1 of base plate 3 of the design comprising rectangle and strip, the base plate 3 sides kept right in its front center are fixedly installed a cylinder thing i.e. table axle 7, and the dial plate 5 of circular strip numeral sign 4 leads to Guo Qi centers wear the connection of activity on table axle, and a helical form clockwork spring 6 is in lax shape device is in the centre of dial plate 5 and incites somebody to action The interior external end head of clockwork spring blocks a column of the other lash to table axle 7 and on dial plate respectively and hangs in stake 8, and clockwork spring is from inside to outside in inverse Hour hands rotation direction device, as shown in the dial plate in Fig. 1, clockwork spring and its connection combiner, now, dial plate 5 is with clockwork spring 6 in lax Free connection status, when this relaxed state be broken i.e. dial plate by external force effect around table axle rotate in the case of can To be driven by extension stake 8, clockwork spring is anticlockwise to rotate to an angle（Such as rotate to as shown in the dial plate shape in Fig. 2）, when External force is removed, and dial plate then can be returned to original position shape i.e. as shown in the dial plate in Fig. 1 in the presence of the elastic-restoring force of clockwork spring again； The push-pull bar 10 of one shape such as U-shaped starts to ride its both sides from the lower left side of dial plate and is set on the positive back side of dial plate 5 and stretches to dial plate Centre and 7 pivot joint of table axle, the U-shaped bottom of push-pull bar then adds in the outer end of push-pull bar 10 near the circumferential edges of dial plate Work have lateral penetration wear mouth 13 and on the upper bottom for wear mouth, the flexible power bullet of device, will be aforesaid to the shell fragment 11 that mouth is gone to the bottom is worn Chi bar 1 is in penetrating in mouth 13 and by shell fragment 11 and elastic being pressed against of going to the bottom for wearing mouth parallel to 3 side directions shape of base plate Its left and right two sides, is installed in two chi noses 2 of base plate edge position about 3 respectively and wears chi bar 1 and can allow bottom left on chi bar Right activity moved with the extension retraction for meeting chi bar and the displacement in the lateral direction of receiving chi bar change, meanwhile, chi bar 1 The right side is also tangent with the circumference of dial plate 5 and is all machined with the microgroove for increasing adhesive force on the contact surface to guarantee the two after contact The reliability of servo-actuated action and synchronization, as shown in chi bar and its connection member in Fig. 2, that is to say, that chi bar is piercing into mouth 13 The shell fragment 11 that can be worn in mouth always afterwards and to wear going to the bottom for mouth clamped, from Fig. 2 it is seen that, when chi bar protract, it understands band Dynamic push-pull bar is clockwise to turn an angle around table axle（About 25-30 °）Reach shape as is shown in fig. 1, now, chi bar Can by push-pull bar wear mouth go to the bottom a left side push away departing from the contact with dial plate（Because the U-shaped bottom of push-pull bar is apart from the table axle center of circle The certain radius more than dial plate of distance, under push-pull bar 10 is by the point of contact in chi bar with dial plate, up time is pressed in the position of certain distance Pin direction is rotated upwardly to chi bar when being close to the chi bar point of contact position tangent with dial plate and is bound to be moved to left by push-pull bar extrapolation）, this When, dial plate is originally that the state in lax state or anxiety all can be revert in the presence of the elastic force of clockwork spring Its original location status, the i.e. location status as shown in the dial plate in Fig. 1, when chi bar another mistake receding, above-mentioned position Change program can occur same Back Up, and chi bar and push-pull bar are returned to the location status shown in Fig. 2, chi bar return to Position that dial plate is touched and such contact condition is always maintained at during the follow-up retraction of chi bar and can be synchronous drive table Disk makees the anticlockwise brill depth size for being rotated up and setting（It is shown that have rotated 108 ° three digital lattice shown in Fig. 2, i.e., When being in 12 the numeral sign 4 of position by " 0 " retraction of relaxed state to " 3 ", represent 3 whole scales of chi bar retraction away from From size）, chi bar may proceed to through the mouth of wearing on the push-pull bar blocked by lower dead center, bullet during this follow-up retraction The parts such as piece act on to the resilient clamp of chi bar and will not stop the motion of this extension or retraction and can only increase a little resistances, chi bar The retraction distance how long dial plate circumference tangent with which undoubtedly can also make the distance movement of same length, and be indicated on dial plate Numeral sign because being to be indicated in, need to make corresponding proportion Adjusted design, can be in the sign in the central angle corresponding to each the length lattice with excircle eliminating this length number value difference Region is making corresponding numeral sign；Being near on the base plate at 10 outer end lower edge position of push-pull bar and on the left of the chi bar Just on the base plate in direction, device has the lower stop lever 9 of a cylindricality, upper pin 12 respectively, they fix and specify that push-pull bar table axle Upper and lower stop and can coordinate guarantee each connection member by design need running, it is ensured that the realization of design function；In table axle 7 On outer end, also fixing device one covers the table cover 16 containing display window 17 of dial plate 5, shape as shown in Figure 3.Thus, the design Depth indicator device 15 is just illustrated and is described, by can be to use, specifically on the device of its shape as shown in Figure 4 to electric hand drill 14 During operation, operator's hand-held device electric hand drill of depth indicator device, before he can operate chi bar first as described in the background art Reach the position matched with apex point, then according to hole depth desired size operating chi bar to make the retraction of same size, table as previously mentioned Disk can make the synchronous rotation with size, and the concrete dimension figure sign of retraction directly from display window 17 can show and read, Again as the stop for drilling come the precise manipulation for once being drilled, if bore the hole of another depth again, such as hole Deep more previous hole depth increases certain size, and after can continuing, adjusting, such as hole depth is more previous for size as reduced scale bar Depth size is reduced or has exchanged the drill bit of another length, then need separately to make chi bar one complete regulation process, i.e., The chi bar of first operating such as aforementioned shape makees the matched operation in apex point of extension, now dial plate can self-return to its initial condition, when Chi bar shows that the display window that numerical value can be from table cover is expressed out on dial plate after retraction goes out the length dimension of sets requirement again, fills Divide the needs for meeting that chi bar adjusts the deep size of reference brill, it is further seen that length need not be arranged again on the chi bar on this device Numerical marker and the setting of length metering standard that only the numeral sign of dial plate need to be carried out meeting actual；From chi bar in figure 1st, can also find in the change in location in Fig. 2 that chi bar can't be synchronous in retraction at the beginning touches dial plate but slightly can move back The rotary motion that latter point distance touches dial plate, i.e. dial plate again is slightly delayed relative to the rear shrink movement of chi bar, such dial plate reality The rotary distance on border may be slightly less than the actual retraction size of chi bar, undoubtedly influence whether the accuracy of hole depth, this problem Solution can adopt following technical measures：In device dial plate and clockwork spring, the actual lag values difference of foundation carrys out the inverse time slightly Some dial plates of rotation in pin direction can thus eliminate error size compensating；In addition, aforesaid depth indicator device exists The stability of each component locations, the positional stability of particularly push-pull bar may be affected to be more susceptible to because of mechanical shock in work To impact, in order to ensure reliable and stable preferably the wearing on the table axle of its pivot joint of its work connects a torsion spring to carry out elastic card other Being maintained at home position as shown in Figure 2 or being intended to this position all the time for push-pull bar elasticity is made on a side of push-pull bar Put.Thus, relative to the former depth indicator device for arranging, the operation of the design is simpler easily straightforward, is depth indicator device Useful improvement.

Claims (1)

1. the square column type chi bar of the depth indicator device on a kind of electric hand drill, its base plate comprising rectangle and strip, is characterized in that The base plate is fixedly installed a cylinder thing i.e. table axle, the table of circular strip numeral sign in the side that its front center is kept right Disk wears the connection of activity on table axle by its center, and a helical form clockwork spring is in lax shape device is in dial plate centre and incites somebody to action The interior external end head of clockwork spring blocks a column of the other lash to table axle and on dial plate respectively and hangs in stake；The push-pull bar of one shape such as U-shaped from The lower left side of dial plate starts to ride its both sides centre and the table axle pivot joint for being set on the positive back side of dial plate and stretching to dial plate, The outer end of push-pull bar be then machined with lateral penetration wear mouth and on the upper bottom for wear mouth the flexible power bullet of device to wearing what mouth was gone to the bottom Shell fragment, aforesaid chi bar is in mouth and crowded with the elasticity of going to the bottom for wearing mouth by shell fragment parallel to penetrating for base plate side directions shape Its left and right two sides is pushed down, two chi intranasal for being installed on the upper and lower edge position of base plate respectively are installed with chi bar and can allow chi bar up and down Activity, meanwhile, the right side of chi bar is also tangent with the circumference of dial plate and is all machined with microgroove on the contact surface；In push-pull bar outer end On the base plate in table axle just to direction near on the base plate at lower edge position and on the left of the chi bar, device has under cylindricality respectively Pin, upper pin, on table axle, returning apparatus one cover the table cover containing display window of dial plate.